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Dritev 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2420 2023

Treffer in den folgenden Teilen:

A. Paone, J. Larbig, A. Rohm, T. Höche ZF TherMaS: Holistic Thermal Management for BEV S. 45-60

„… with a smart cooling system enables higher power-density and allows to exceed current power limits of …” „… making cabin heating easy by supplying hot water to the heater core of the HVAC-system. And not …” „… A/C and coolant system with auxiliary electrical heater Due to the higher efficiency of electric …”

Y. Jin Smart eDrive – Autonomous cooling eDrive for small BEVs and P4 AWD S. 21-36

„… system heat dissipation capa-bilities in the real life situations. The last aspect to consider in the …” „… Secondly, the Smart eDrive must demonstrate its capability to dissipate heat through its cool-ing fins …” „… placed all over the eAxle to make sure various use cases in real life can be ensured without the power …”

J. Jung, A. Helm Manufacturing technologies for reduced AC copper losses in hairpin stators – Increasing the efficiency of electric traction machines S. 131-142

„… the heat capacity of active parts, which is why peak power is limited in time, e.g. to 30 seconds …” „… heat losses in the active area, related to the system with four conductors per slot Optimized hairpin …” „… eight-conductor system and provides a manageable analytical estimate for the design phase. To reduce eddy current …”

L. Bayoux, K.-L. Kimmig, D. Reitz Has the potential in terms of weight, installation space, and function already been exhausted for hybrid transmissions? S. 205-220

„… developed. To this end, Schaeffler as a component and system supplier offers innovative solutions around the …” „… with regard to a higher power density while using fewer resources [4]. In addition, there are other …” „… be dispensed with by means of appropriate valve logic [8]. The power electronics are connected to the …”

A. Kappes, S. Frei, P. Noone, Stephan Rinderknecht Development and Design of a Range Extended four-speed Two-Drive-Powertrain S. 253-280

„… and heat sinks in the overall system to be used efficiently. For example, the internal combustion …” „… effect, these multi-EM architectures enable operating strat-egies to distribute the required power for …” „… EM has been designed to reach a continuous power of 40 kW and a peak power of 60 kW to enable highly …”

J. Bonifacio, V. Warth, S. Scharr Optimizing sustainable high-performance e-drives S. 349-358

„… high torque density at least means targeting a low system weight to improve the CO2-footprint …” „… demonstrates the need of coordinating and understanding the overall system as a multi-criteria problem. To …” „… increase the continuous power capability and to lower coil temperatures during typical drive cycle …”

J. Ahn, S. Yang Disconnect Actuator System (DAS) for AWD EV’s Driveline – Increasing electric efficiency, Seamless shifting system S. 115-130

„… the power of the EV AWD auxiliary driveline. In addition, to improving electric efficiency, the system …” „… DAS (Disconnect Actuator System), a system that is applied to EV’s Driveline to improve electric …” „… drive system is required to construct an AWD vehicle. In addition, in road driving situations where AWD …”

M. Magnusson, O. Nicklasson, H. Jacobsson Electric Cross Differential, eXD S. 235-252

„… , SwedenVDI-Berichte Nr. 2420, 2023 235System Overview The purpose of the eXD is to transfer torque from one wheel to …” „… power-stages and the sensor-less speed control algorithms. The advantages of an onboard ECU compared to an …” „… torque on the high grip wheel. The added wheel brake torque is associated with a heat power loss …”

P. Geradts, M. Kasten, A. Landvogt Psychoacoustic optimization of the NVH behavior of an eDrive power train – Application of a Targeted Micro Geometry Scatter on Helical Gears to break-up the regularity of the transmission error excita... S. 459-470

„… , 2023462optimization of the structure of the electric drive system to reduce both the vibration transfer to …” „… electric drive systems has been pro-posed and evaluated for a 3-in-1 system. As an alternative to further …” „… Psychoacoustic optimization of the NVH behavior of an eDrive power train Application of a Targeted …”

doi.org/10.51202/9783181024201

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LAND.TECHNIK AgEng 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2427 2023

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J. Konrad, C. Varlese, C. Junger, R. Krizan, P. Hofmann Fuel cell electric powertrain for the agricultural tractor – FCTRAC: development, performance, and benchmarking S. 49-56

„… thermal system focuses on the challenging fuel cell heat dissipation due to high thermal loads and low …” „… . Therefore, the thermal system of FCTRAC is designed to operate at a standstill with maximum power at typical …” „… , 2023 51heat exchanger areas and high fan powers are necessary to guarantee sufficient heat dissipation …”

C. Mayer, T. Eberhart, K. Huber, J. Karner Fuel cell electric tractor powered with biogenic hydrogen – Vehicle design and architecture S. 57-62

„… integrated via a heat exchanger and shut-off valves in parallel to the evaporator of the AC system and is …” „… operated up to this temperature without power derating. The size of the cooling surface of the new heat …” „… well as a rechargeable electrical energy storage system (REESS) as an energy buffer to compensate for …”

J. Engström, A. Örde, A. Hägglund, J. Jansson, L. Johansson, H. Andersson Modular battery swap system as an enabler for fossil free mobile work machines S. 313-320

„… cooled components would build heat during high-power usage, but this does not seem to be the case. The …” „… . For an autonomous machine system, the battery swap needs to be done automatically. VDI-Berichte Nr …” „… . 2427, 2023314The long-term goal for the work is to come to a modular battery replacement system that …”

C. Nöß, J. Weller A Fuel Cell Tractor in Operation – Concepts and Field Data S. 39-48

„… with up to 100 kW of continuous power that will feed back energy to the system up to 15 kW in a …” „… damage to the battery and in consequence to the whole system as the maximum fuel cell power is higher …” „… heater that is used for cabin heating with up to 6 kW of power. The fan requires 10 kW at full speed with …”

A. Lajunen Numerical simulation of alternative powertrains and fuels in agricultural tractors S. 29-38

„… system [7] and hybrid powertrains [8], [9]. Due to the rapid increase of diesel fuel prices and desires …” „… are generated by the heat losses of the main power source (PS) thus the internal combustion engine …” „… of the main power and energy source thus fuel cell stack and battery. It also is important to observe …”

Titelei/Inhaltsverzeichnis S. I-XX

„… introduction to a highly integrated electric axle drive system 295S. Willems, R. Himmelsbach, ZF …” „… Hydraulic and Electric Configurations for the Actuation of Tractor Auxiliary and Implement Functions to …” „… Reduce Power Consumption 1X. Tian, R. P. Jenkins, CNH Industrial America LLC, Burr Ridge, IL, USA; J …”

J. Rieck, F. Behrendt, F. Gerdes, L. Frerichs Potential uses of bioenergy in the mobility sector and agricultural machinery S. 433-440

„… plant by using a small combined heat and power unit or purchased externally. Due to the highest biogas …” „… power classes combined with 40 m3 silage wagons) In order to determine the specific fuel requirement …” „… can be supplied in different ways. For example, it would be conceivable to provide electrical energy …”

doi.org/10.51202/9783181024270

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International Conference on Gears 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2422 2023

Treffer in den folgenden Teilen:

W. Ramdane, C. Changenet, S. S. Ouali, C. Chevrel-Fraux, P. Casanova Thermal model of a planetary gear set using an isothermal approach S. 451-466

„… is used to solve the problem: power losses and heat flow are calculated versus time. Which leads to …” „… mechanical power losses, and heat flow are valid, campain test can be used to evaluate the numerical model …” „… load dependent power losses are calculated, same approaches are proposed to quantify gear tooth …”

C. M. C. G. Fernandes, J. M. A. Pinto, D. E. P. Gonçalves, A. R. Silva Reduction of root and flank temperature using a hybrid polymer-metal rack S. 1547-1562

„… thermal power. A loading and heating system was designed and manufactured, the temperature measured using …” „… to a static bending test (adaptable to cyclic loading) while imposing different thermal power on the …” „… gear rack flank. To accomplish that, a loading and heating system was designed. The temperature was …”

F. Concli, M. N. Mastrone Latest advancements in the lubrication simulations of geared systems: a technology ready for industrial applications S. 499-518

„… temperatures. A decrease of the power losses allows also a downsize and a reduction of the weight of the system …” „… accurate to capture the power losses of geared systems, the computational effort required for their …” „… load-dependent power losses, i.e. the one related to friction and proportional to the transmitted load. Those …”

J. Zhang, B. Shaw, A. Hammer, I. Sewell Effects of Surface Engineering on the Efficiency of Involute Helical Gears – An Experimental Investigation S. 995-1016

„… power recirculating back-to-back gear test rig with two identical gearboxes both fitted with …” „… to gears while running. Key words Efficiency, power loss, involute, gearbox, gear mesh, helical gear …” „… , grinding, ISF superfinishing, mechanical polishing, WC/C coating, power recirculation, back-to …”

J. Vorgerd, P. Tenberge, M. Steinrötter Scuffing load carrying capacity of high-speed gears with an isotropic superfinished surface S. 227-242

„… by friction in the local slide-roll contacts due to gear damage and thermal heat emission. The local …” „… roughened with worse frictional properties. This leads to higher power losses and can ultimately cause a …” „… motor, which only has to feed in power losses. Pitch line velocities up to 100 𝑚/𝑠 are possible using …”

N. Fujimura Application-oriented research on internal generating polishing S. 1863-1876

„… power trains, leading to a positive effect on the efficiency of the overall system [1]. At the same time …” „… special internal cooling system minimizes spindle heat distortion and allows the process to meet the high …” „… speed is indicator to the machine performance related to heat distortion, synchronization. The sliding …”

D. Zorko, N. Vukašinović, B. Černe The effect of gear manufacturing quality on the mechanical and thermal state of a plastic gear S. 1319-1332

„… heat generation and the resulting operational temperature. 1. Introduction Transition to a more …” „… the heat generation In order to determine how the geometric quality affects the heat generation and …” „… to asses the effect of gear’s quality on the heat generation and the resulting operational …”

A. Carvalho, R. Rego, N. Fukumasu, D. Tamayo, F. Nascimento, I. Machado PVD Deposition of Nb-MoS2 Coatings on Gear Carburized Steel S. 1071-1082

„… system efficiency and sustainability [3]. Coatings have been extensively utilized in gear applications to …” „… used to power simultaneously two targets (Nb and MoS2 with, respectively, 99.999% and 99.99% purity …” „… deposition. Nb target power and substrate bias voltage were systematically varied to identify the optimal set …”

M. Reichl, P. Lenz, A. Oliva Challenges and possibilities of virtual development of e-axle transmissions S. 485-498

„… essential during the development process to get a deep understanding of the lubrication system.In this paper …” „… speeds of 20,000 rpm and more at the input shaft lead to high losses and heat generation in the bearings …” „… . According to ISO/TR 14179-2, this total power loss is composed of load-dependent and load-independent parts …”

A. F. İnceel, B. Özkan, B. Karba, M. Vardar A study on the efficiency prediction of a gear bearing drive by means of mathematical modelling S. 1135-1146

„… power required to calculate the gear mesh losses of the system. The pertinent power flow is given Fig. 2 …” „… analytical heat balance model to provide a means of calculating the thermal transmittable power of a single …” „… by considering the power losses of the components within the system. Introduction & Research findings …”

S. Sartori, L. Alari, N. Motta, D. Podda Helicopter Drive System Safety Dissertation S. 633-644

„… rotor drive system is to transmit power from engines to both main and tail rotors, while reducing the …” „… last decades, (i.e. events involving the loss of helicopters due to a failure of the drive system …” „… the failure detection system and the management of the emergency condition due to the loss of the …”

G. Guimarães, L. Robatto, R. Rego, A. Faria, A. Borille, J. Mascheroni Surface integrity of 20MnCr5 pinion gears manufactured through laser powder bed fusion S. 1845-1858

„… after stress-relief heat treatment, machining, and carburizing [8]. The present study aims to analyze …” „… heating system. To attain the maximum possible density, a parametrization was carried out by manipulating …” „… variables such as laser power, scan speed, and hatch spacing. Considering that gears are prone to fatigue …”

E. Grabovic, A. Artoni, M. Gabiccini, E. Ciulli Exploration of trade-offs between NVH and efficiency in bevel gear design S. 853-880

„… semi-empirical model to estimate frictional power losses under elasto-hydrodynamic lubrication is described. The …” „… the heat transfer during meshing of worm gears in order to accurately investigate their overall …” „… point velocity, we differentiate the system of eqs. (15) with respect to time, which results in the …”

J. Hongu, S. Hattori, J. Kato, T. Koide Gear friction coefficient estimation using directional parameter under ATF lubricated condition S. 753-762

„… proportionally to its surface roughness to a power of 0.25. Xu et al. [13] developed an exponential function that …” „… ., and Cheng, H.: A friction model of partial-EHL contacts and its application to power loss in spur …” „… adapted to estimate the gear friction coefficient with various finishing processes. However, this new …”

T. Jagiella, S. Haller, J. Lechner, T. Rung, M. Wöppermann, B. Zeeb Building a software toolchain for automated mass-customization of specific end-use gear unit parts using AM-driven design guidelines S. 1607-1616

„… deformation by anchoring the geometry to the build plate and cooling thin features by acting as a heat sink …” „… a minimum feature thickness to reduce the number of “heat sink” support structures. The software …” „… zones can be used to further adapt the final part to customer requirements. 4.2. Automated CAD system …”

C. Kunik, J. Kunert Wetting and oil flow analysis of planetary gearboxes using oil flow simulations S. 467-484

„… ) to analyze the fluid flow and evaluate the power losses for a wide range of gear unit variants in …” „… planet carrier, rotate around a central sun gear. This system is covered to the outside by the ring gear …” „… about the wetting of components, the power losses [2 - 4] and the heat dissipation of gear units, it is …”

I. Criscuolo, F. Carneiro, G. Guimarães, R. Rego, J. Mascheroni Indirect Selective Laser Sintering: Modeling and analysis of surface densification by shot peening S. 1681-1698

„… showed that at the minimum power of 40 W and higher speed the results of porosity were lower. Due to the …” „… , Brazil Abstract Indirect Selective Laser Sintering (iSLS) has shown disruptive potential to meet …” „… solutions in mass production mainly due to the speed of printing, when compared to direct additive …”

G. Devaraj Vibration reduction of planetary gear drive using mesh phasing: modelling and experimental validation S. 157-174

„… concept phase of a planetary gear set can help reduce the transmitted vibrations to the rest of the system …” „… are conducted on the system to validate the computational predictions. The developed model is used to …” „… considered for the advantages of compactness, high power-to-weight ratios, high efficiency and high …”

M. Rothemund, M. Otto, K. Stahl Applicability of classic analytical calculation approaches for the design of plastic gears S. 1483-1498

„… . The inner diameter of the pinion is fixed so that it can rotate to introduce a torque into the system …” „… volume but mainly for applications under low load. Current trends are leading to the design and …” „… and analytical approaches are available for the design of gears. Due to their speed, only the latter …”

T. Kleiber, B. Neubauer Advancing to The Next Level – Cost Efficient Roll-Inspection: Back from End-of-Line NVH to Skiving Process S. 1591-1606

„… powertrain. With a focus on e-Axles, the system requires a lightweight, compact, and power dense solution …” „… Eccentricities are to be found in order 1, normal heat distortion in order 2, pre-machining often in order 3 …” „… Advancing to The Next Level – Cost Efficient Roll-Inspection: Back from End-of-Line NVH to Skiving …”

S. Sklenak, D. Mevissen, J. Brimmers, C. Brecher, B. Lenz, A. Mehner Analysis of Load Cycles and Local Wear of Dry and Solid-Lubricated Gears S. 727-740

„… functions of a liquid lubricant, such as heat dissi-pation from the contact zone, are not fulfilled to the …” „… different load cycles. At the end of the test, the coating system fails in the range from z = -2 to 0 mm. On …” „… layer. Fig. 3 shows the gearing after the PVD process and the coating system. To achieve the most …”

B. van Wissen, L. Pastukhov, F. Mitsuzuka, K. Iwanaga, A. Hasanovic NVH performance of thermoplastic gears: modelling and measuring S. 1389-1402

„… the generated noise will be. Therefor the peak-to-peak transmission error value of gear system is a …” „… service, by new bearing with an improved heat-resistance. This decreased the system noise (without running …” „… meters and microphones mounted close to high-speed running gears. Via detailed data analysis, combined …”

K. Suzuki, K. Sakai, K. Sakai, T. Hara Considerations on Lubrication of High-Speed Rotating Gear (First Report) S. 741-752

„… an e-Axle. It aims to find new Low Fluid loss Low Lubricant agitation lossPower consumption Low …” „… lubricant injection direction, position, and speed can lead to a low-loss lubrication system that satisfies …” „… speed required by the e???Axle due to limitations of the visualization and the analysis technologies at …”

P. Romio Spur Gear Teeth Reconstruction via Direct Laser Deposition S. 1641-1664

„… small parts that could be affected by the Heat Affected Zone (HAZ) [6]. The DLD process proved to be …” „… tip relief and root relief, no longitudinal crowning Material 16 MnCr 5 according to DIN 17210 Heat …” „… test rig is based on a power loop principle to impose a constant torque over the tested gears. The …”

S. Ebrahimi, U. Kissling, C. S. Matkovič Evaluation of the NVH Characteristics of Gear Drives with Plastic Gears by the Forced Response Analysis S. 1403-1418

„… calculation is done in the frequency domain, which allows to simulate the powertrain system for different …” „… which enables the user to precisely investigate the vibration characteristics of the system. With the …” „… between the meshing gears to the static contact force, characterizes the system behavior under dynamic …”

U. Cihak-Bayr, T. Wopelka, C. Wintersteiger Effect of LOL conditions under high velocity and high injection temperatures S. 763-778

„… velocity. The maximum sliding velocity of this system was found to be approximately 4 m/s. This corresponds …” „… higher velocities of up to 80 m/s were realized by the transition belt system on both shafts of the rig …” „… transmission system is attached to, upwards. The applied oil circuit can supply lubricant with a high …”

F. Mieth, D. Tazir Local load capacity analysis for the design of a balanced flank modification for cylindrical gears according to bevel gear procedures S. 927-944

„… flexibility. However, due to the significant increase in the required computing time and computing power …” „… according to bevel gear procedures What really happened!Dipl.-Ing. Frederik Mieth, Dipl.-Ing. Dennis Tazir …” „… , FVA-GmbH, Frankfurt, Germany Abstract In order to be able to carry out an optimal gear design with the aim …”

doi.org/10.51202/9783181024225

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AgEng LAND.TECHNIK 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2406 2022

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A. Gkountas, P. Bakalis, D. Tyris, D. Manolakos Thermodynamic modelling of a Biomass Organic Rankine Cycle for sustainable heat and power cogeneration in greenhouses S. 47-52

„… Thermodynamic modelling of a Biomass Organic Rankine Cycle for sustainable heat and power …” „… Combined Heat and Power (micro-CHP) fueled by residual biomass emerges as a promising sustainable solution …” „… University of Athens (Greece), aiming to explore a micro-CHP system based on the technology of Organic …”

L. Wannasek, D. May, D. Tyris, T. Amon Design of an on-farm biomethane upgrading plant with hybrid compression and filling station S. 259-266

„… on-farm is commonly used for power and heat generation (typically in combined heat and power plants), its …” „… can be used to replace fossil fuels, e.g. to power tractors. Part of the Horizon 2020 project RES4LIVE …” „… Power (CHP) or fuel for farm tractors. A promising biogas to biomethane upgrading technology that could …”

M. Messieux, D. Touze, R. Guillaud, O. Bensehila, O. Marchand, S. Foroushani, L. Wannasek, T. Amon Conversion of a diesel farm tractor to run on bioCNG – Adapted in-use livestock farm tractor for biomethane S. 253-258

„… decades to supply Combined Heat and Power plants (CHP) using stationary gas engines with biogas. Today …” „… an 82hp (62kW) 4.5 litres four-cylinder diesel engine from Deere Power System (Figure 1 - a ). It was …” „… management system requested to match with the latest emissions regulation. The piston heads were modified to …”

S. Dekkers, W. Saeys, B. Missotten Assessment of cutting quality on a combine harvester header using optical flow – Relation between velocity drop over knife and stubble height variation S. 165-172

„… search for innovative solutions requires techniques to evaluate the cutting quality of the system. In …” „… cereal harvesting, the cutting system has become the limiting factor for further capacity increases. The …” „… this research, it is hypothesized that a camera with optical flow algorithm could be used to assess the …”

N. Katsoulas, C. Baxevanou, D. Feidaros Optimal design of a hybrid power generation system for greenhouses S. 53-60

„… Optimal design of a hybrid power generation system for greenhouses Nikolaos Katsoulas, Catherine …” „… generation system (with photovoltaic, wind turbine, batteries and oil generating unit) to meet greenhouse …” „… . 2. Methodology For the optimisation of a hybrid power system including RES two time-series should be …”

Titelei/Inhaltsverzeichnis S. I-XXII

„… sustainable heat and power cogeneration in greenhouses …” „… University of Athens, GreeceOptimal design of a hybrid power generation system for greenhouses …” „… to simplify the generation of nitrogen flow balances – Digital mapping of nitrogen cycles …”

A. Barbaresi, M. Ceccarelli, M. Bovo, M. Agrusti, E. Santolini, D. Torreggiani, P. Tassinari, G. Menichetti Machine Learning Models for Predictions of Thermal Energy Need in Farm Buildings S. 477-484

„… , and materials. The building is naturally ventilated, with no system to control indoor temperature and …” „… outputs of the model [14]. The SHAP system was used to distribute reward in a n-person game. Call ν(S) the …” „… fundamental role in building design, but a huge number of numerical simulations is required to achieve energy …”

doi.org/10.51202/9783181024065

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Drivetrain Solutions for Commercial Vehicles

VDI Wissensform GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2421 2023

Treffer in den folgenden Teilen:

L. Heber, M. Helmich, J. Schwab, T. Knobelspies, M. Kober, F. Rinderknecht Thermoelectric Generators for Heavy-Duty Vehicles as an Economical Waste Heat Recovery System – Holistic design and evaluation with the use of modern simulation methods S. 109-122

„… oxide fuel cell combined heat and power system with Multi-Stage Exhaust Chemical En-ergy Recycling …” „… Thermoelectric Generators for Heavy-Duty Vehicles as an Economical Waste Heat Recovery System …” „… diesel vehicles is lost in the form of waste heat via the engine coolant, oil and exhaust system. This is …”

M. Eisele, M. Kohler Modular Electric Driveline Platform for Commercial Vehicles – Central Drives and Electric Axles Built up From Standardized and Scalable Components S. 37-46

„… the stator, offering high power and torque density due to high copper fill rate, Figure 3. This …” „… pumped through the motor in order to absorb the heat at the point where it is mainly generated, namely in …” „… inverter is connected to. Thus, the waste heat from motor and inverter can be used for a heat pump in the …”

A. Arnberger, H. Wancura, M. Wieser, H. Zhou, W. Gruber, J. Pell, C. Schörghuber Hybrid powertrain with hydrogen-engine – Technical solutions for future commercial vehicle powertrains S. 79-92

„… system gets applied on a hydrogen engine to demonstrate further energy consumption reduction …” „… disadvantages. For the case study presented in this paper, the power-split hybrid was not considered due to its …” „… frequently operated low engine speed range. In order to deliver the same rated power, hydrogen engine needs …”

M. Trahand Drivetrain architectures and vehicle integration: The evolution and advantages of in-wheel propulsion for heavy-duty commercial vehicles S. 123-134

„… battery packs can power systems such as HVAC to heat and cool the truck’s cab when parked and idling …” „… combustion en-gine (ICE), housed inside the TRU to power the electric condenser that cools food service …” „… reefer when it’s not connected to shore power) discharge magnitudes greater amounts of particulate matter …”

L. Vassieux, A Diop Valeo hybrid solutions for Commercial Vehicle – 48V and HV hybrid solution S. 93-108

„… , sufficient technical performance and the lowest investment costs. To identify the required power, this system …” „… , Dipl.-Ing. Arame DIOP, Valeo Powertrain System Driveline, Amiens, France Abstract To cope with regulation …” „… electrical modules for transmission hybridization, from basic technical bricks to a fully integrated system …”

G. Wiche Voith Central Drive Concept for HD Trucks S. 181-190

„… oil-water heat exchanger. The cooling system is designed to be highly efficient, with low noise and …” „… driven portfolio to the market. The VEDS HD+ (Voith Electrical Drive System for HD Trucks) is appli-cable …” „… , Voith has developed a high-voltage drive system in a modular approach tailored to the drivability of HD …”

B. Meurer The next level of an improved Truck-Trailer connection and interaction – Examples for Electrification and Automated Driving S. 29-36

„… enables integration with eWorX, ZF’s electric power take-off sys-tem, to supply reefers or other external …” „… system can be used as a range-extender for battery electric vehicles and fuel cell trucks to realize …” „… battery cooling system with further com-ponents and an adapted suspension to integrate the ZF e-Axle …”

doi.org/10.51202/9783181024218

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Dritev 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2401 2022

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P. Alagarsamy, A. Zangaro Compact Reduced Order Model (ROM) based on Finite Element (FE) Models of Power Electronics in Electric and Hybrid Vehicles S. 95-108

„… system-level simulation would not be feasible. To avoid this com-plexity in system-level simulations, foster …” „… MATLAB files are then used for System-Level Digital-Twin Simulations. 1.1. Motivation The motivation to …” „… flow rate-conditions. As run-time models they are used to predict the temperature at the power module …”

J. Kniel, M. Göckler, B. Müller Holistic thermal management as a “must have” for efficient BEV S. 397-406

„… E-Motor and Power electronics to the system requirements and vice versa. Optimizing the interface between …” „… , but normally there are specialist for each of these topics connected to the different system levels …” „… management approach with the goal to develop an excellent system together and for our customer. Fig. 2 …”

J. Merckling Use of Power-Dense Fuel-Efficient Tapered Roller Bearings in E-Drives under Low-Viscosity Oil and High-Speed Conditions S. 153-168

„… in the 2000s to reduce bearing power loss in car rear axle centers beyond what standard tapered …” „… “enhanced” TRBs designed to reduce power loss in an axle. The Timken Company has performed extensive testing …” „… , given their engine power, perform at high vehicle speeds of up to 8000 rpm for the bearings in the …”

M. Schröder, K. Herold, C. Monissen Efficiency Increase of Electric Machines with Active Thermal Field Weakening S. 119-132

„… According to the moderate power level, 400 V is defined as system voltage. For the inverter, a system with …” „… with high magnetic energy density are used due to high power requirements. Their strength cannot be …” „… . At 10,000 rpm, a high motor temperature is more favorable for up to 100 kW power. Lower temperatures …”

A. J. Wimmer High-Speed Testing: The Fast Lane towards a Running System S. 365-380

„… "plug-and-play" solution to be installed easily on existing and new test stands. Power Requirements for Testing …” „… high-speed testing was set on power, speed and torque, customers started to implement another requirement to …” „… power density of electric vehicle drives the effectiveness of heat dissi-pation must be enhanced …”

C. Ugare, A. Sibirko Plastics in high reliability Power Inverter Applications S. 209-222

„… VDI-Berichte Nr. 2401, 2022220system has high potential to increase the power density and reduces effort for …” „… reliability. The use of plastics creates new opportunities to increase power density with lower cost, reducing …” „… diesel engine by a pure electrical power train. The manufacturers are targeting to achieve several …”

F. Lagier, N. Freund, K. Bause, S. Ott, A. Albers Simulation-based evaluation of high-speed PEEK gears in automotive powertrains and design of a validation environment for high-speed gears S. 223-240

„… and efficiency of electric powertrains for individual mobility require a whole-system approach to the …” „… components in the drive system. Research shows the potential of future-proof powertrain to-pologies with …” „… comparison to metal gears, and are far less dense, allowing for a lighter system with low inertia [1]. This …”

F. Schuchter, M. Schönstein, K. Bause, A. Albers Temperature Modelling of a Dual Clutch with Artificial Neural Networks S. 335-346

„… turbulent flow can occur. Therefore, it is very complex to describe the heat transfer processes precisely …” „… addition, they optimize the contact force of the braking system with a genetic algorithm in order to obtain …” „… has to be opened or closed completely in order to protect the clutch lining. For these models, a high …”

doi.org/10.51202/9783181024010

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Commercial Vehicles 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2417 2023

Treffer in den folgenden Teilen:

F. Schweizer, T. Pflanz, M. Wagenblast, W. Tegethoff, J. Köhler, F. Breuer, L. Frerichs Fuel cell electric drive concept for heavy-duty commercial vehicles S. 123-140

„… . For the FC compared to the ICE, the heat rejection into the high temperature cooling system is roughly …” „… position, the FC truck's HT cooling system has to reject around 2.5 times more heat than an ICE truck. In …” „… required. According to literature, a three to four-fold increase in the cooling system's total heat …”

J. Heseding, P. Meyer-Roesler, D. Rasch Virtual Type-IIa – Software product for homologation of commercial vehicle BEV without additional hardware S. 93-104

„… also limits the typical accepted charge power of these batteries which leads to a limitation in system …” „… NEV driveline architectures. The endurance brake power of electric drives generally fits to Type-IIa …” „… brake is that the regenerative braking can be only applied to its needed power, if the energy storage …”

X. Seykens, C. Bekdemir, P. van Gompel How can hydrogen combustion engines contribute to realizing climate targets? S. 105-122

„… , conversion, and consumption in industry and transport. Using renewable electricity for heat and power …” „… medium-high to high power. For the fuel cell powertrain, efficiency VDI-Berichte Nr. 2417, 2023110is highest …” „… at low to medium power. At high power, the efficiency of the H2-ICE is close to or even exceeding …”

C. Peteranderl, M. Zähringer, G. Balke, J. Schneider Megawatt charging as an enabler for battery-electric long-haul trucks – is that enough? S. 55-66

„… shows the daily driving range of the MAN eTruck with the Combined Charging Sys-tem (CCS) with up to 600 …” „… , using the MCS with charging powers between 700 kW and 1000 kW, the MAN eTruck can reach up to 1000 km …” „… charging powers of around 800 kW, the time losses compared to ICETs can bekept for less than 20 min. The …”

M. Wöhrmann The air must get out of the truck, bus and trailer – Why hydro-pneumatic suspension systems are the future for electrified vehicles S. 165-176

„… systems, air suspension and a hydro-pneumatic suspension system, use the gas properties to achieve a …” „… pressures of around 8 to max. 10 bar. This system pressure requires large areas to realize the corresponding …” „… spring load. With hydro-pneumatics, the system pressures in the design position are in the range of 80 to …”

doi.org/10.51202/9783181024171

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Commercial Vehicles 2021

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2380 2021

Treffer in den folgenden Teilen:

L. Heber, J. Schwab, T. Knobelspies Thermoelectric generators for heavy-duty vehicles as an economical waste heat recovery system S. 17-32

„… internal combustion engines, due to a lack of techno-economic alternatives, a waste heat recovery system …” „… to [6] as: ? (1) where ? is the output power of the TEM, ? is the hot-side heat flow …” „… of solid oxide fuel cell combined heat and power system with Multi-Stage Exhaust Chemical Energy …”

S. Baker, S. Munshi, J. Huang High performance and efficiency hydrogen engine using westport fuel systems’ Commercially available HPDI fuel system S. 97-116

„… ICEs are to play in the coming decades. Internal combustion engines (ICEs) power almost all vehicles …” „… typically dominated by the diesel engine due to its superior attributes in terms of power output …” „… most promising method and has the potential to deliver the highest engine performance (torque/power …”

D. Morgenweck, M. Großmann, W. Fakler, M. Lamke, F. Bitzer ZF E-Mobility products and software for commercial vehicles S. 1-16

„… delivered power of the drive system. ZF-EMS distributes the available power to all high voltage components …” „… the waste heat of the drive system to heat up the battery or the cabin. That holds especially true in …” „… saved. Moreover, if the design of the cooling system enables to interchange heat between different …”

H. Ulmer, M. Rothschuh, F. Brinkmann, R. Wascheck, T. Delebinski eDrive & Fuel Cell powertrain systems engineering for commercial vehicles S. 55-72

„… power of 300 kW, achieves an efficiency of 50% at a constant load point, compared to 44% system …” „… power split between the FC system and the high voltage battery has to be optimized taking FC …” „… gives insight to technical challenges in FC system integration and demonstrates a tailored development …”

J. Pell, I. Müller, W. Gruber, A. Schilk E/E architecture and operating strategy for fuel-cell trucks – Challenges and solutions for energy- and cost-efficient operation S. 117-134

„… lower than the fuel cell system voltage. To distribute the electric power of the HV circuit between …” „… heat. Both systems will utilize the vehicle thermal management system (VTMS) to dissipate the heat to …” „… of freedom in the system which alows the energy management to set the power split based on the …”

M. Holzer, F.-D. Speck Hybridization of heavy duty trucks – Market analysis and technology for high voltage as well as low voltage solutions S. 33-42

„… to provide the electric energy that is needed to heat-up the aftertreatment system to achieve the …” „… has to deliver due to the limited power of the electric motor. Thus, ZF revised its concept in …” „… European Union is planning to introduce a CO2-based toll system called "Eurovignette". The target is to …”

C. Glöggler, C. Neuschl, A. Zaiser, D. Denzel Health & safety in public transport – Better climate and optimized hygiene in times of COVID-19 S. 229-244

„… conditioning or ventilation system. According to this, the vehicle can be completely purged with fresh air …” „… system. VDI-Berichte Nr. 2380, 2021234 Fig. 4: Recommendations to the driver, source: Setra.de In …” „… the HVAC system Scientists communicated to the public the scientific finding that the SARS-CoV-2 …”

doi.org/10.51202/9783181023808

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41. Internationales Wiener Motorensymposium 22.-24. April 2020

Bernhard Geringer (Hrsg.), Hans-Peter Lenz (Hrsg.)

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 813 2020

Treffer in den folgenden Teilen:

E. Jean, E. Barrieu, M. Capirchia, C. Herbers Elektrisch heizbarer Katalysator: technische Anforderungen und Haupteinflussfaktoren /Electrically Heated Catalyst: Requirements, Controls and Key Parameters S. I-311-I-327

„… exhaust system in order to transfer the heat from the EHC to the catalyst. . The 12V board net is …” „… an electrical catalyst heating system, a functional analysis is necessary to determine power …” „… flow/power supply, thermal inertia, efficiency of the heat transfer to the gas) can be extracted from this …”

Z. J. Sroka, Z. Sadlak Einhaltung der CO2-Emissionsnormen als Herausforderung für eine thermische Aktivierung der Verbrennungskammern in Verbrennungsmotoren /CO2 Emission Standards as a Challenge for the Thermal Activation ... S. II-512-II-543

„… , all power plants connected to an electric power system used for charging are considered in the …” „… demand due to the introduction of heat-pumps(10) and the effect of reduced grid power by wind power …” „… coal-fired power generation remains in the power system it will be necessary to predict the amount of …”

O. Bitsche Porsche Taycan, 800V Technologie fur hochperformantes Laden und Fahren /Porsche Taycan, 800V Technology Enabling High Performance Charging and Driving S. I-28-I-38

„… between cable crosssection, heat-loss and weight of the high voltage system, it was also necessary to …” „… short charging time requirement leads to a higher charging power demand. In order to support a charging …” „… repeatable acceleration led to a power requirement of more than 600 hp (440kW). To solve the trade-off …”

D. Song, W. Happenhofer, Z. Yuan, Y. Cui, Z. Zhang, D. Wang 1,5 T - Modulare Motorplattform mit hoher Effizienz/1.5T High Thermal Efficiency Modular Engine Platform S. II-186-II-201

„… has the same main structure to achieve different power configurations, while meeting the requirements …” „… system. The hybrid version adopts low pressure EGR[9] technology to reduce knock tendency, as a result …” „… lift mode is adopted to ensure the required air volume for power and torque targets. The test results …”

R. Golisano, V. Rampino, A. Vassallo, N. P. Sacco, L. Magro, G. D'Aurizio, S. Trimboli, A. G. Marino, V. Biasin, I. Zallio, R. Vernassa, J. Wartha, D. Kaminski Der neue General Motors 1.5 Liter Diesel 3-Zylinder-Motor/The New General Motors 1.5 Liter Diesel 3-Cylinder Engine S. II-149-II-185

„… found to be beneficial for both power achievement (high peak of heat release) and part load atomization …” „… oil temperature. A component with 50% increased heat exchange power was selected to guarantee faster …” „… priority is to heat the after-treatment system as quickly as possible to reach the light-of temperature of …”

S. Kweon, J. J. Park, S. H. Kim Der wasserstoffbetriebene Bus und LKW von Hyundai Motor Company/The Hydrogen-Powered Bus and Truck from Hyundai Motor Company S. II-233-II-245

„… . According to the power demand, air processing system (APS) also determines the amount of supplying air into …” „… power, water and heat as shown in Figure 10. Thermal management system (TMS) controls the coolant …” „… Figure 6. Hydrogen storage system is safely designed with a high enough safety factor to protect the …”

K. Hwang, C. Yu, B. Min, Y. Kim, D. Lee, K. Ha, D. Chae, J. Yi Der neue Smartstream 1.0L DI-Turbo Ottomotor von Hyundai-Kia/The New Hyundai-Kia's Smartstream 1.0L Turbo GDi Engine S. I-121-I-150

„… 12V and 48V HEV vehicles to meet the electrical demands of the market. The 48V system with …” „… pressure injection system have been redesigned to improve combustion reliability, which effectively …” „… operating conditions to improve fuel efficiency as a whole without lack of engine power. However, even …”

N. Andrisani, F. Contarin, A. Lorenzon, M. Nencioni, M. Scassa, F. Mallamo, T. Korfer, H. Busch Innovative Ventiltriebe als Beitrag zur Erfullung zukunftiger Emissionsanforderungen im Stadtbetrieb /Novel Valvetrain Design as Enabler for Compliance with Upcoming Stringent Emission Demands in Urba... S. I-285-I-310

„… system are highly attractive. In order to allow the usage of cylinder deactivation as soon as possible …” „… system capable of cam profile switching down to engine temperatures well below the given minimum Euro 6 …” „… aftertreatment system to minimize pollutant emissions can be realized, exceeding the benefits of conventional …”

M. Alt, F. Gouzonnat, P. Ramminger, R. Matthe, L. K. Cloos Die Multi-Energy Platform des Opel Corsa: rein elektrisch, Benzinoder Dieselantrieb /The Multi Energy Platform of the Opel Corsa: Pure Electric, Gasoline or Diesel Propulsion S. I-203-I-224

„… High-Voltage battery system can be charged with a power of up to 100 kW when the state-of-charge is low and …” „… characteristics discussed for a BEV, it may become more important than what used to be the power figure of a …” „… Control System. In addition, the Battery heater is included in the battery housing. With every module …”

R. Schlögl Kohlenstoff als zukünftiger Energieträger/Carbon as a Future Energy Carrier S. II-90-II-113

„… to be multiplied by the efficiency factors of the energy conversion system (engine or power station …” „… adaptation both for the charging stations and the power system re-enforcement are added to the existing cost …” „… combustion system is used to generate electricity rather than traction power it may strongly enhance the …”

J. Kolling Die Rolle von Kooperationen fur die BMW Group/The Role of Cooperations for the BMW Group S. I-433-II-X

„… , EV und zukünftig, da wo sinnvoll auch als Hydrogen. Bei der BMW Group heißt das „The power of choice …” „… und mit was sie zukünftig unterwegs sein wollen – the power of choice. Abstract As a leading …” „… changing and volatile environment. On the one hand, the BMW Group has clearly committed itself to the …”

M. Bell, S. Kollamthodi, N. Hill, A. Greaney Die „Net-Zero-Herausforderung“ - Auswirkungen der Lebenszyklusanalyse auf Antriebssystemtechnologien, Lieferketten und die regulatorische Landschaft /The Net Zero Challenge - Life Cycle Impacts on Pro... S. I-171-I-190

„… considering the potential evolution of impacts to 2050 (future scenarios are based on previous system …” „… product system includes all relevant processes directly related to the use of light-duty and heavy-duty …” „… Cycle Assessment of the fuel or electricity used to power the vehicle Vehicle cycle “Embedded …”

H. Sandquist, P. Frejinger, S. Klacar, I. Scholten, S. Li System Engineering Methodik angewandt für Hybrid-Antriebssystementwicklung /Systems Engineering Methodology Applied for Hybrid Propulsion System Development S. II-16-II-33

„… propulsion system development The Geely group propulsion system portfolio has been developed to provide a …” „… it increases the propulsion system efficiency. To manage the complexity Geely has developed a …” „… attributes from customer to vehicle system level and subsequently to component level is visualized in Figure …”

M. Elicker, M. Scheidt, M. Brauer, R. Pohlke, K. Hielscher, J. Geddes, J. Kiyanni Innovatives Konzept zur Erfullung der Emissionsvorschriften im Schwachlastbetrieb von Dieselmotoren fur EU7 und darüber hinaus /Innovative Concept in Diesel Low Load Emission Compliance for EU7 and Be... S. I-248-I-284

„… Reduzierung der Zylinderladung. Die variable Ventilsteuerung wurde durch das eRocker System mit schaltbaren …” „… konventionellen Heizmaßnahmen deutlich abzusenken. Im zweiten Schritt wurde das eRocker System in einen AJ200D …” „… Ventilhubsteuerung erfolgt durch schaltbare Rollenschlepphebel im elektromechanischen eRocker System von Schaeffler …”

doi.org/10.51202/9783186813121

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ELIV 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2423 2023

Treffer in den folgenden Teilen:

A. Heise Plug & Play High-Performance Computer (HPC) and Fluid Cooling Solution S. 159-168

„… system with flexible cooling pads is expected to handle heat losses between 30 W and up to 1,000 W …” „… power, allow update and upgrade options and a permanent online connection to the outside world. This …” „… of this shift to more and centralized computing power is thermal management. Higher computing power …”

S. Miller, L. Nicoletti A Holistic Approach for Designing a Battery Electric Vehicle Thermal Management System S. 77-90

„… thermal management system must manage the waste heat from the engine and ensure thermal stability. The …” „… rise of BEVs shifts the focus to the electric powertrain (traction battery, electric motor, and power …” „… degradation and aging. Therefore, to maximize power output and battery lifespan, it is crucial to keep the …”

N. Pfullmann Electrified commercial vehicle trailers – how to turn a conventional trailer into a hybrid vehicle S. 703-710

„… to change, though. In a first step, diesel generators to power the cooling unit of a reefer trailer …” „… support solutions To realise an electrified traction support system not only a high-voltage battery and an …” „… a thermal management system, additional control units etc. are also necessary to operate the vehicle …”

L. Li, M. Schlecker, T. Zipper AI-Based Energy Management of Next Generation Architectures S. 391-404

„… safety-relevance of the functions. At system failure, the EMS must adapt the energy paths to ensure the energy …” „… vehicle. Due to this, improving the system energy efficiency requires more attention in development of the …” „… actuators are not bound to a specific function or controller anymore but become now system-level resources …”

doi.org/10.51202/9783181024232

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LAND.TECHNIK 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2395 2022

Treffer in den folgenden Teilen:

A. Klein, M. Kissel, P. Pickel, F. de Moraes Boos, V. Kegel GridCON2 – Development of a Cable Drum Vehicle Concept to Power 1MW Fully Electric Agricultural Swarms S. 11-16

„… GridCON2 Development of a Cable Drum Vehicle Concept to Power 1MW Fully Electric Agricultural …” „… the need of higher power and higher range by bringing 1MW to the field through a 3 km long cable. As …” „… alternative matching the same energy transfer. An off-road power dense vehicle is required. This leads to …”

F. Pult, A. Stein, M. Geimer Challenges in the Use of Alternative Fuels: Solutions to handle Boil-Off Gas in Agricultural Machines S. 431-440

„… between the heat flow from the environment minus the cooling power of the cooling system. The heat flow …” „… System +- Heat transfer Fluid Power Electricity Grid Table 3: Properties of Cryomech AL125 [20] Volume …” „… electrical energy can either be stored in a battery or used to run the cooling system. In addition, the …”

S. Prufling, B. Langer Latest technology solutions for Charging and e-Machines – how off-road and agriculture applications can benefit from automotive innovations S. 365-380

„… vehicle application where charging power up to one Megawatt is aimed. For summarizing and closing this …” „… influencing parameters and related constraints needs to be taken. The power can be increased by torque and …” „… the thermal vehicle system requirements and interfaces also need to be considered for choice of the …”

F. Wohlfahrt, T. Gores, S. Terorde, L. Frerichs Applicability Evaluations of Methane based Powertrain and Energy Storage Systems on High Performance Harvesting Machine Applications S. 423-430

„… to additional fan-power-demand and limited compatibility to modular cooling-systems for …” „… demands regarding the reduction of greenhouse gas emissions (GHG) to comply with the ambitious sector …” „… between ~5-20% [1, 2]. The use case “bio methane” increases those potentials furthermore to potentials …”

doi.org/10.51202/9783181023952

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Scrubbing System Design for CO2 Capture in Coal-Fired Power Plants

Elizabeth Heischkamp

Reihe: Verfahrenstechnik

Band 953 2017

Treffer in den folgenden Teilen:

Summary S. 163-167

„… -IC. The integration of the scrubbing system with MEA into the power plant is analogue to K1-IC at …” „… reducing CO2 emissions from advanced coal-fired power plants and the main objective is to keep related …” „… capture of 90 % CO2 from the power plant’s flue gases. In order to fulfil this objective, there were …”

Technical analysis S. 70-142

„… accounted for in the end, only the promising ones that seem to be able to contribute to power plants …” „… , pressure drop is not proportional to the square of the gas velocity anymore but to a power higher than two …” „… kJ/molCO , whereas experimental calculations indicated piperazine’s heat of absorption to be approximately …”

Titelei/Inhaltsverzeichnis S. I-XII

„… 2 Capture in Coal-Fired Power Plants Scrubbing System Design for CO2 …” „… Fortschritt-Berichte VDI Scrubbing System Design for CO 2 Capture in Coal-Fired Power Plants Dipl .-Ing. El izabeth …” „… , Elizabeth Scrubbing System Design for CO2 Capture in Coal-Fired Power Plants Fortschr.-Ber. VDI Reihe 3 Nr …”

Modelling of CO capture systems S. 31-69

„… constant input of the user to fulfil the intended task. 3.2.2.3 Heat exchanger and stripper system Once …” „… and a heat exchanger. For this purpose he used RateFrac12 to model both columns. According to Freguia …” „… species. And hence, in order to correct discrepancies Chen had to adjust the heats of formation of the pi …”

Introduction S. 1-17

„… coal to natural gas. • Increase use of renewable energy sources or to nuclear power2, which produce …” „… stable salts that lower the absorption capacity of the solvent. If a coal-fired power plant was to be …” „… that occur in such a system. To this end the simulation software Aspen Plus® versions 2006.5 and 7.1 …”

Downstream scrubbing of flue gases S. 18-30

„… the bottom of the absorber and then pumped through a heat exchanger to the stripper column. 2.1 …” „… this purpose. Another part of the delivered heat is used to boil up a portion of the solution, in …” „… bottom, is pumped through the heat exchanger and, since its temperature still is not low enough to enter …”

Analysis of economic feasibility S. 143-162

„… the power plant with a CO2 scrubbing system LCOE rises to at least 69.7 €/MWh. This result …” „… results and identifying optimal operation parameters for both scrubber system and power plant, until …” „… system for the purpose of solvent regeneration. Instead, steam extraction is assumed to be taken from …”

doi.org/10.51202/9783186953032

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International Conference on Gears 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2294 2017

Treffer in den folgenden Teilen:

B. Bauer, R. Hambrecht, A. Kube Thermal analysis and optimization of gearboxes by simulation S. 917-926

„… gearboxes, the thermal power limit tends to become the limiting factor. To achieve a balanced system, the …” „… the power losses inside the gearbox. The second one is to enhance the heat dissipation rate. Target …” „… solution. For this solution an optimal design is investigated. Due to the complexity of a gearbox’s heat …”

G. Hlebanja, S. Kulovec, D. Zorko, J. Hlebanja, J. Duhovnik Influence of the tooth flank shape on thermal load of the gear S. 1583-1592

„… . VDI-Berichte Nr. 2294, 20171588 The Heat flow corresponds to the power of friction and heat rate is defined by …” „… plastic gears due to their thermal sensitivity. Heat is generated by friction at the contacting surfaces …” „… a contact, whereas thermal power additionally depends on the sliding speed. The generated heat is …”

P. Kauffmann, P. Schäflein, V. Heuer PM technology for the future powertrain S. 1289-1298

„… proportional to the µm. H.µ. P P Vmiploss Where Ploss is the power lost at mesh [W], Pip is the input …” „… power [W] and HV is dimensionless tooth loss factor. Hence for a rolled gear losses due to friction at …” „… electrified powertrain with higher complexity. To meet market and legislation requirements like cost …”

E. Maier, A. Ziegltrum, T. Lohner, K. Stahl Characterization of TEHL contacts of thermoplastic gears S. 1483-1496

„… detrimental accumulation of contact heat limit its applications to lowly loaded machine elements. Lubrication …” „… focused on unlubricated applications in which detrimental frictional heat is generated that leads to …” „… . Comparisons to metal gears are shown, before friction, film thickness and heat management of thermoplastic …”

T. Saito, K. Miyamoto Traction drive analysis identified with rheological friction property of traction fluid S. 1185-1190

„… with experimental data. Since half-toroidal CVT variator system was required to analyze simultaneously …” „… dynamic solver was used. This method made it possible to precisely quantify the torque capacity and power …” „… into account. A predetermined clamping force is applied to the power roller by applying hydraulic …”

K. Togai, N. Fujinaga A reduced order internal combustion engine model for transmission development S. 1191-1198

„… . Introduction A transmission is one of essential parts in a vehicle system to achieve best fuel economy and …” „… riding comfort. Input power to a transmission comes mainly from an internal combustion engine (ICE). ICE …” „… power output process response to a control mean, e.g. a throttle, is complex and large scale engine …”

D. Strasser, S. Troll, R. Sperlich, J. Münch Reliability safeguarding for an 8 MW wind energy gearbox in serial production – Prototype and process development ensuring stable quality at the highest level S. 1085-1100

„… % cumulative annual growth in 2015 to 2020. The recent tender process leads to low power prices for offshore …” „… , a proven design applied in more than 2,500 gearboxes in the power range from 2.5 to 3 MW since 2003 …” „… overall system on the individual components (see Fig 4). Due to the huge size of the model it was …”

M. Takahashi, T. Itagaki, N. Maeda, H. Takahashi Evaluation of developed micro-gear endurance test system and basic study on load-carrying characteristics of micro-spur-gears S. 243-252

„… system to conveniently perform micro-gear endurance tests. Then, we measured the minimum applied torque …” „… formed by the heat treatment is worn down. The shapes of these black lines are considered to be defined …” „… or a decrease in oil film due to the increased applied torque. However, at this stage, power …”

B. Leupold, V. Janzen, G. Kotthoff, D. Eichholz Validation approach of PM gears for eDrive applications S. 119-130

„… system related to performance and NVH in an already existing series production high performance GKN …” „… manufacturing technologies are, for example, the need for system downsizing in transmissions and differentials …” „… , the need for developing systems with higher power density and the strong NVH (Noise Vibration …”

C. Gorla, E. Conrado, F. Rosa, F. Concli Austempered Ductile Iron (ADI) for gears: manufacturing, performances and tests S. 977-988

„… , controlled by an inverter, which, during tests, only needs to provide the power losses of the system. On the …” „… geometries of the casing. A heat treatment as well as a finishing step, used to compensate the induced …” „… to form a closed mechanical power recirculation loop. A controlled rotating hydraulic actuator …”

B. Černe, D. Zorko, J. Duhovnik Semi-analytical method for the prediction of the flank temperatures of polymer gears during running S. 1611-1624

„… Increased temperatures due to frictional heat generation play a major role in the behaviour and life …” „… heat flux pattern evaluated based on eq. (4) for the meshing cycle is shown in Fig. 5 (a). To make the …” „… times or time of heat release respectively) To estimate the time ts we consider that the released …”

B. Kianian, C. Andersson Sustainability-conscious Powder Metallurgy gear manufacturing – An analysis of current manufacturing challenges S. 1251-1264

„… of the basic mechanical parts to industrial segments where motion and power transfer are needed [3 …” „… a wrought part to final shape and quality, including a heat treatment step for enhancement of …” „… e.g. heat treatment distortions and what finishing method to choose when leveraging between cost and …”

A. Miltenović, M. Banić, Ž. Mišković, R. Mitrović, V. Miltenović Prediction of heat generation in transmission bearings by application of FEM S. 1199-1208

„… Belgrade, Serbia Abstract Heat generation in bearings is manifested by the power losses of the …” „… transmission. Because of the rise in temperature due to heat generation, appearance of dilatation adversely …” „… heat generation within rolling bearing: by friction between the rolling bodies and raceways, due to …”

J. Lohmiller, J. Hoffmeister, J. Hermes, M. Ansorg, H. Dhonau Development and investigation of austempered ductile iron (ADI) for thick-walled gear components S. 963-976

„… correlating fatigue properties to microstructural parameters using samples prepared from cast and heat …” „… Planetary gear boxes are widely used in industrial applications due to their high power density. Especially …” „… the largest carrier. The challenge is to develop a material, which is cast and heat-treated with …”

S. Grützner Holistic simulation of gearboxes – system simulation S. 51-60

„… dynamic interactions with its environment. Holistic system simulation helps the engineer to understand …” „… order to understand, improve or predict the system behavior. 1. Reduction of operational noise by …” „… also possible to represent the planetary as threedimensional multi-body system (MBS), which offers the …”

C. Brecher, C. Löpenhaus, F. Goergen, D. Mevissen Crack propagation analysis of pitting damages of high-strength material systems in gear applications S. 281-292

„… on the power density of gearboxes lead to a continuous development of materials with optimized heat …” „… and depth for each material system is evaluated to understand the crack formation. The analysis …” „… in detail. The chosen variants differ in particular with regard to the material and the heat …”

M. Ophey, F. Klocke, C. Löpenhaus Approach for modeling grinding worm wear S. 1365-1378

„… friction and wear on the system elements and thus leads to changes in the surface, loss of material and …” „… scientific analyses exist. One research objective for generating gear grinding is to increase economic …” „… condition of the grinding worm. Today it is not possible to predict the wear of a grinding worm. Therefore …”

Titelei/Inhaltsverzeichnis S. I-XXVII

„… error to noise and vibration behavior of a M. Octrue gear system under load Materials J. Lohmiller …” „… Europe invites the world Time and venue: September 13th to 15th, 2017, Technische Universität München …” „… Planetary Gear Systems – Design and Analysis S. Grützner Holistic simulation of gearboxes – system …”

K. Mao, V. Goodship, N. Madhav, R. Ramakrishnan, P. Langlois Experimental Investigations of Polymer Composite Gear Performance S. 1625-1636

„… , polymer composite gears are considered for applications from low-power precision motion to high power …” „… ]. As a result the use of polymer composite gears in power transmission is limited due to the lack of …” „… , nylon and PEEK) to understand the gears’ contact, friction, wear and fracture behaviour. Two …”

K. Matsuo, Y. Suzuki, K. Fujiki Accuracy analysis of workpiece and tool in the hobbing process using Taguchi Method S. 1331-1342

„… manufactured in a series of processes consisting of “hobbing -> heat treatment -> honing”. It is essential to …” „… VDI-Berichte Nr. 2294, 2017 1333 2.3 Conversion of hob coordinate system to workpiece coordinate system …” „… The following equations hold true for converting the hob coordinate system to the workpiece coordinate …”

R. Saito, Y. Suzuki, K. Matsuo The effect on tooth root breakage strength of tooth root shapes resulting from differing hobbing conditions S. 733-740

„… power performance. As a result of these trends, there is a need to ensure the durability and …” „… conditions Ryohei Saito,Dipl.-lng. Kouji Matsuo, Hardware System Development Department, JATCO Ltd …” „… , Japan Abstract The moves to enhance fuel efficiency in response to the issue of global warming …”

R. Weidig Adoption of polymer gears – Challenges and solutions S. 1565-1574

„… requirements in an engine system where temperatures range from -40°C to 150°C. The gears in engine systems …” „… system suppliers to benchmark this alternative against their incumbent metal solutions for internal and …” „… GmbH, Hofheim a. Ts. Abstract Legislation drives the automotive megatrend to reduce fuel …”

A. Şorea, F. Buus Bendixen Reluctance magnetic gear – Magnetic gears, no longer toothless S. 615-622

„… eventually leads to fatigue stresses. The other problem with this construction is that heat generated in the …” „… adjusted in relation to the housing position. This was done by implementing a system to vary the angle of …” „… magnetic gear based on the reluctance principle is presented and compared to both modern magnetic gears …”

A. K. Shojaei, P. Volgers, M. Cassata Advanced modeling and experimental techniques for fatigue life prediction of plastic gears S. 1575-1582

„… ), coefficient of thermal conductivity is in the range of 0.3 to 0.37 (W/m oC), and its specific heat is assumed …” „… the gear system. 4. Conclusion Due to higher energy absorption properties of polymers compared to …” „… industrial applications, e.g. electronic cars and bikes, has led to a rapid increase in plastic and hybrid …”

C. Weber, T. Tobie, K. Stahl Investigation on the flank surface durability of gears with increased pressure angle S. 173-184

„… examined experimentally. Optimization goals were the power to weight ratio of the transmission and the …” „… pressure angles αn ≈ 20° according to the basic rack as specified in ISO 53 [7] in today’s power …” „… recirculating power loop principle, also known as a foursquare configuration, in order to provide a fixed …”

B. Schlecht, F. Rudolph, S. Schumann Experimental studies and simulation of hypoid gear lapping S. 1403-1414

„… second power. On the other hand, the ratio of total sliding velocity to VDI-Berichte Nr. 2294, 20171408 …” „… experience shows it to be beneficial for the acoustic behaviour of heat treated gear sets, the resulting …” „… disadvantage compared to competing processes. The flank topology after lapping is not completely predictable …”

V. Angelopoulos, M. Hirsch PM gear rolling simulations using advanced plasticity material model and improved initial conditions S. 1277-1288

„… after the primary manufacturing process (pressing of powder particles-sintering). To reduce the …” „… porosity level and parallel to improve the mechanical properties secondary operations apply. The gear …” „… rolling densification of PM gears is the most significant of them. It leads to better mechanical …”

doi.org/10.51202/9783181022948

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Model-Based Control of a Turbocharged Diesel Engine with High- and Low-Pressure Exhaust Gas

Matthias Patrick Alexander Mrosek

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 803 2017

Treffer in den folgenden Teilen:

Semi-Physical Mean Value Engine Model S. 12-33

„… . A further quantity are the wall heat losses PQw;st, which are necessary to determine the internal …” „… mair, which enters the gas system and the amount of air mfLst which is required to burn the injected …” „… heat dissipation to a cooling fluid with the temperature Tcl to an outflow temperature Tout, see Fig …”

Titelei/Inhaltsverzeichnis S. I-XX

„… flow rate kg/s or kg/h m mass kg M molar mass g/mol M torque Nm p pressure Pa P power W q specific heat …” „… turbocharger compressor power W Pf turbocharger friction power W Pt turbocharger turbine power W PQi;t heat …” „… with lumped parameters is the base to analyse the system properties of the complex air path. In doing …”

Bibliography S. 190-204

„… heat transfer investigation of a turbo charger. Journal of Engineering for Gas Turbines and Power …” „… : Theoretical compression system model. Journal of Engineering for Power, 98:190–198. 192 Bibliography Guzzella …” „… study of an LP EGR system on an automotive Diesel engine, compared to HP EGR with respect to PM and NOx …”

Introduction S. 1-7

„… to each engine with regard to demanded emission targets, system cost, impact on engine efficiency and …” „… exhaust system to the intake system. Generally, recirculated inert exhaust gas has a lower oxygen …” „… either the intake or the exhaust system can increase the pressure drop over the LP-EGR route to achieve …”

System Properties of the Air Path with HP- and LP-EGR S. 34-60

„… engine intake and exhaust system to step excitation signals of the relevant HP-EGR, LP-EGR and …” „… dominantly influence the air path dynamics as well as turbocharger heat transfers are neglected. refer to the …” „… sketched temperatures are necessary to understand the system responses in the intake and exhaust system …”

Emission and Combustion Models S. 61-85

„… model complexity these models allow to simulate the rate of heat release and the emission formation for …” „… and the exhaust system, see Sect. 4.3. Then the turbocharger acceleration and the much slower heat …” „… characteristic values from the rate of heat release. Since these model inputs are hard to excite, a D-optimal …”

Appendix S. 172-189

„… engine’s sensors and the ECU to the test bench automation system. This engine setup allows a fast exchange …” „… system with an ETK (Emulatortastkopf; emulator test probe) from ETAS makes it possible to read and modify …” „… . This system is utilised to manipulate intake and exhaust system actuators, for data acquisition of …”

Air Path Control Design and Dynamical Reference Value Generation S. 102-167

„… to control the strongly coupled gas system quantities. A first overview of general design methods and …” „… ) simplifies the coupled system of air mass flow rate and charge-air pressure to a system of operation point …” „… development in physical control results in the inversion of the turbocharger power balance to determine a …”

doi.org/10.51202/9783186803122

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Land.Technik AgEng 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2300 2017

Treffer in den folgenden Teilen:

W. Breu, B. Pichlmaier Electrified Utility Tractor S. 9-14

„… management has been developed to actively cool and heat the system. The switchable heat pump efficiently …” „… state of the art. The same applies to the electric high voltage safety systems, power electronics, brake …” „… Approval of the Electrical Equipment) standard power outlet. The system voltage should be within the …”

R. Himmelsbach, B. Volpert, K. Grad Electrified Front-Wheel Drive Concepts for Tractors Designed for Improved Traction Functions S. 31-38

„… differential is power dissipation, e.g. by brake actuation which converts drive power to heat. VDI-Berichte Nr …” „… coupling is cheap to produce and also makes it possible to add a four-wheel braking system at a reasonable …” „… of a motor and generator. Changing axle loads require more power to be constantly redirected between …”

doi.org/10.51202/9783181023006

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