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International Conference on Gears 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2422 2023

Treffer in den folgenden Teilen:

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

„… Wetting and oil flow analysis of planetary gearboxes using oil flow simulations Dr.-Ing. Claus …” „… first step, the quality of CFD simulations using the SPH method is analyzed by comparing the oil flow …” „… agreement of simulation and experimental results for both oil flow and power losses. With focus on …”

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

„… . Optimizing the oil flow via transparent transmissions is costly and only leads to limited insights regarding …” „… the oil flow within the transmission system.Virtualization and simulative predictions are therefore …” „… powertrain have constantly increased. In this context, the flow behavior of the oil distribution in vehicle …”

M. Gebhardt, A. Rhode, B. Legrady Lubrication improvement at the HS-IS spline shaft interface of a wind turbine gearbox using the smooth particle hydrodynamic method S. 519-536

„… wear issues in the past is analyzed in this work. Starting with a general analysis of the oil flow …” „… through the spline, it becomes apparent why insufficient oil wetting occurs. The volume flow through the …” „… properties and less cost while assuring lubrication of the axial support and a sufficient oil volume flow …”

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

„… . 20, p. 10386, 2022. [46] C. Klier, L. Berger, and K. Stock, “New prospects for oil flow simulation in …” „… the oil flow in an automotive manual transmission. The results of predictions of lubrication …” „… . [58–62] and Hildebrand et al. [63] focused on the oil flow prediction and its validation with high-speed …”

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

„… permanent oil-off test till a shut-off criterium was reached. Experimental and Simulation results for …” „… untersucht. Die experimentellen Daten wurden durch Simulationen mit einem EHL-Modell, das auch …” „… to 30 m/s. The experimental campaign was complemented by a EHL simulation model, which can also …”

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

„… dimension of the debris dragged by the oil flow is large enough to close the gap between two magnets located …” „… and not only a required final testing phase. Dedicated test campaigns, simulation strategies and …” „… , a detailed evaluation through specific simulations and testing evidences is necessary, ensuring …”

P. E. Schnetzer, J. Pellkofer, K. Stahl Calculation method for wear of steel-bronze rolling-sliding contacts relating to worm gears S. 907-926

„… with injection lubrication at an oil volume flow of 1.4 /𝑚𝑖𝑛 at an oil injection temperature of 100 …” „… tests are performed with injection lubrication at an oil volume flow of 7 /𝑚𝑖𝑛 at an oil injection …” „… pattern observed in experimental investigations. Daubach et al. [19] present a wear simulation that is …”

M. Werner, S. Graf, M. Oehler, O. Koch Investigation of the electrical behavior of a spur gear stage pair by means of impedance measurements S. 67-80

„… Kaiserslautern-Landau Kaiserslautern AbstractIn electric drive trains, an undesirable current flow can occur over its …” „… inverter, an undesired current flow can occur via the machine elements in the current path due to the given …” „… diagram. This allows an electrical simulation of the mechanical components, whereby critical current paths …”

M. Ruzek, R. Brun, F. Ville, P. Velex, Y. Marchesse On the reduction of windage power losses in gears by the modification of tooth geometry S. 785-800

„… dynamics simulation and experiments for reduction of oil churning loss and windage loss in aeroengine …” „… modifications shown in figure 1, in order to deviate the air flow in an attempt to reduce WPL. VDI-Berichte Nr …” „… and simulations for gears with and without ramps and prove that WPL can indeed be significantly …”

M. Willecke, J. Brimmers, C. Brecher Experimental Investigation of the load carrying capacity of beveloid gears with optimized flank topography S. 125-138

„… compared to the results of the calculation method to validate the simulation approach.3. Motivation …” „… a tooth contact simulation that is able to calculate a beveloid tooth contact correctly, validation …” „… simulation methods to predict the operational characteristics of beveloid gears. These simulations take into …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… , Ferrières-en-Gatinais, FranceWetting and oil flow analysis of planetary gearboxes using oil flow simulations 467C. Kunik …” „… | 15:31:04 | 148 mm x 210 mm Planetary gears: Load distributionParametric system simulation of load sharing …” „… Industries (CETIM), Senlis, FranceHybrid models for the simulation of displacements and stresses in …”

L. Binanzer, L. Merkle, M. Dazer, A. Nicola Pitting Detection for Prognostics and Health Management in Gearbox Applications S. 97-108

„… or with constant oil flow and oil cooling and heating. In the present study, the tests are carried …” „… simulation with an ideal adaptive operating strategy even provides maximum RUL extensions of 38,10 % [9 …” „… distance /mm 61 VDI-Berichte Nr. 2422, 2023 101To have constant boundary conditions FVA reference oil No. 3 …”

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

„… maximum torque at the slow shaft is limited to 𝑇 4000 𝑁𝑚. The oil condition can be set to a maximum …” „… of dip lubrication, a temperature-controlled oil injection was used. For constant speed and oil …” „… Before starting a test, the oil system and the test gearbox were heated up to test temperature. Each load …”

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

„… lubricating method, oil viscosity, oil flow rate, gear macro- & micro-geometry on gear efficiency. It is …” „… in the drop of temperature of lubrication oil and may lead to the reduction in weight and size of …” „… with a 75-Litre oil tank, each equipped with an electric heater and a water-cooled heat exchanger …”

R. Beilicke, D. Bartel, L. Bobach Simulation-based optimization of gearing efficiency using thin coatings S. 975-984

„… Simulation-based optimization of gearing efficiency using thin coatings Dipl.-Ing. Ronny Beilicke …” „… ) Simulationen zum Einsatz kommen. Simulationen bieten die Möglichkeit, in einem frühen Entwicklungsstadium eine …” „… TEHD-Simulationen mit verschiedenen DLC-Schichten wird gezeigt, welchen Einfluss eine Beschichtung von Ritzel …”

N. Missal, S. Schwertel, M. Ludwig The next level of axial forming for a sustainable component and process chain design S. 1765-1776

„… noise are causing problems, and dependence on oil imports is growing. Thus, effective climate and …” „… flow-forming. However, these processes can only be applied to through holes and don’t offer any application …” „… standard oil for highly loaded forming processes were applied for the forming of the helical gear …”

G. Vasileiou, C. Vakouftsis, C. Kalligeros, V. Spitas, C. Papalexis, A. Tsolakis, P. Zalimidis Continuous prestressed reinforcement of plastic gear teeth and its effect on bending strength vs conventional reinforcement S. 1375-1388

„… module. The full modelling and simulation process is discussed thoroughly, including the calculation of …” „… , surface deformation and plastic flow investigating both their geometrical features and material properties …” „… . Both the finite element (FE) simulations and the experimental investigation carried out in this study …”

doi.org/10.51202/9783181024225

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Dritev – Drivetrain For Vehicles 2019

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2354 2019

Treffer in den folgenden Teilen:

R. Gat, M. Ehlen Virtual lubrication analysis – Simulation of oil flow in gearboxes using a novel lagrangian approach S. I-133-I-136

„… Virtual Lubrication Analysis – Simulation of Oil Flow in Gearboxes using a novel Lagrangian …” „… Fig. 1: Influence of baffle plates on oil flow behavior in the vicinity of the suction point during …” „… post-processing abilities of the method are demonstrated. Visualization of the oil flow as path lines and …”

O. Simon, W. Heubner Triple wet clutch module and actuation system, shift cylinders and park lock for modern hybrid transmissions – Architecture and technical description of a triple wet clutch unit and the related active... S. I-471-I-482

„… too high oil flow at higher engine speed. Even power packs with electrically driven pumps and …” „… consumption, low weight, small packaging free in positioning, and attractive pricing. A closed oil circle …” „… with an own oil reservoir allows lifetime filling and free choice of the lubrication oil …”

A. Moser, F. Brezger Efficiency improvements in transmissions using new latching technologies in clutch & hydraulic actuation systems S. I-427-I-446

„… are introduced and their potentials are shown with help of simulation in reference cycle. For …” „… the power flow changes from one to the other part of transmission. In both Hybrid or conventional …” „… clutch disks demands a noticeably volume flow, which is typically part of the hydraulic system. Here …”

Titelei/Inhaltsverzeichnis S. I-I-I-XII

„… Virtual lubrication analysis – Simulation of oil flow in gearboxes using a novel lagrangian approach …” „… Multi-gear transmissions in electrified powertrains Development optimization by improving simulation methods …” „… � � � � � � � 103 A. Locher, M. Ebenhoch, P. Gutmann, ZF Friedrichshafen AG, Friedrichshafen Content f Simulation …”

U. Stockinger, H. Pflaum, K. Stahl Single vs. multi-cone synchronizers with carbon friction lining – A comparison of load limits and deterioration behavior S. I-455-I-470

„… and sliding velocity give the mean values over all friction surfaces. The oil flow through a …” „… kept at ϑoil = 80 °C and the oil flow at Voil = 5 l/min. The cycle time was adapted that the specific …” „… Simulation-Driven Design of Heavy Duty Truck Synchronizers. Volume 10: ASME 2015 Power Transmission and Gearing …”

P. Fietkau, N. Lamparsky, M. Felbermaier, A. Fröhlcke, T. Conze Holistic design approach for electric drives S. I-163-I-178

„… cycles. This in turn is important for the vehicle range. The oil flow rates are also included in the …” „… , 2018, pp. 286-292 [7] Fuger, R., Hanke, M.: An Integrated Workflow for the Simulation-Driven …” „… Enterprise 2 (2011) 1 pp. 39–56 [12] Piechottka, H.: Methodical Synthesis and Simulation-Assisted Analysis …”

S. Kurokawa, M. Kunihisa, Y. Oyama Development of a new next-generation CVT for small cars S. I-385-I-396

„… tooth bottom was discontinued to reduce the weight. In addition, a Tosca simulation was conducted to …” „… flow control valve that is used for the JF015E unit was adopted for the new CVT from the standpoints …” „… of fuel economy and performance. The discharge flow rate was optimized by means of the sprocket …”

S. Johnsen, R. Wexenberger Mechatronic transmission control module for agile AMT Transmission actuation in commercial vehicles S. III-75-III-84

„… sensors and connectors are sealed off from oil to simplify service and improve ingress protection. With a …” „… spring A baseline simulation with given acceleration, frequency range, spring stiffness, forces and …” „… contact ratio at the mechanical resonance frequency. Simulations performed with different mass ratios …”

K. von Rueden, C. Danzer, J. Liebold, T. Mueller, T. Hirschbeck 1, 2 or 3 – how much it would be? Evaluating the need of multispeed electric drives coming from different perspectives S. I-227-I-254

„… oil pump. The additional costs are obvious. In addition, there are linearly increasing …” „… simulation. In addition, three different vehicle classes, two different electric motor types and several …” „… ) Fig. 3: Basic information about the longitudinal simulation At the beginning, a c-class vehicle …”

doi.org/10.51202/9783181023549

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Dritev – Drivetrain For Vehicles 2018

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2328 2018

Treffer in den folgenden Teilen:

C. Ahn Churning oil path optimization process development – Application of moving particle simulation method to design process S. I-95-I-100

„… process of oil flow simulation, it was impossible to apply simulation result to design because …” „… flow shape and oil reach. VDI-Berichte Nr. 2328, 2018 97 Fig. 5: Comparison Simulation with Test …” „… found by many trials of simulation. Main factor of oil flow interruption was back flow effect. When …”

R. Stehr, A. Götz, M. Ciesek, S. Köpfler, M. Finsterbusch, R. Willeke Future Schaeffler CVT concepts with an innovative actuation system S. I-49-I-64

„… global transmission market. The power consumption of a traditional transmission oil pump represents the …” „… electrohydraulic actuators and a cooling oil pump regarding actuator power range, performance, consumption …” „… potential for increasing the level of efficiency. In fact, consumption simulations show fuel savings of up …”

G. Bednarek, K. Geratz, H. Chariou The all-new 8-speed AT for the Opel Grandland X S. I-1-I-10

„… length, reduced oil leakage by small pump gear diameter and a direct oil flow to the valve body …” „… functionality and Stop-Start & Sailing capability by Electromagnetic Oil Pump (EMOP) or internal accumulator …” „… developed super low viscosity oil together with improved gear surface finishing and improved friction …”

D. Güth, J. Haupt, T. Gassmann Seamless-shift two-speed eAxle with torque vectoring S. I-255-I-268

„… , depicted in Fig. 6, follows the basic idea of a backward simulation that follows the power flow from wheel …” „… . VDI-Berichte Nr. 2328, 2018264 Fig. 6: Principle flow chart of a simple backward simulation (power flow from …” „… shift strategy will be proposed by means of simulation results. Finally, an outlook for the application …”

M. Roßhuber, G. Schromm, K. Kranz The new BMW automatic transmission – Challenges in development S. I-11-I-22

„… components. For the heavily loaded clutch A an external cooling (additional oil flow) was integrated in …” „… a positive interaction for the oil pump. The reduced leakage requires less volumetric flow, which …” „… reduction has the positive side effect of reducing the leakage, thereby reducing the need for oil flow and …”

C. Sibla, A. Donges, F. Jauch Third Generation of ZF’s 8-speed automatic transmission – Reducing CO2 emissions in the 8HP transmission S. I-23-I-32

„… to the brake from the inside radial Brake A. This oil can flow out through the piston slot into the …” „… system search, a theoretical simulation was conducted to determine the influence of the number of gears …” „… as well as the gear ratio spread. The result of the simulation is shown in Fig. 2. A larger gear …”

R. Heckmann Fully automated EOL E-drive testing – Automation and modularity for efficient testing solutions S. II-73-II-84

„… and bus systems, and manages the energy supply, along with battery simulation, power flows, power …” „… clamping devices, cooling circuits, and oil supply. They are joined by flexible adaptations of power …” „… the in-house power network or the public power grid. Fig. 3: Sustainable energy flow and energy …”

W. Guo, M. Jordan, X. Xu The application of fast and efficient clutch coordination control in a P2 hybrid automatic transmission S. I-465-I-484

„… electric oil pump. The transmission gear system is composed of three planetary gearsets (PG1-PG3), four …” „… oil from the MOP flows back into the EOP when the EOP is not working. The pressure control of each …” „… oil filling is the key factor influencing the transmission shift quality. The oil filling response …”

B. Chamberlin, E. Gold HEV P2 module concepts for different transmission architectures clutch and e-motor options S. I-441-I-450

„… the stator assembly and oil flow onto (or through) the rotor assembly, optimal performance can be …” „… simulations have shown that with a closing time of 60% and an average closing pressure of 6 bar in the WLTC …” „… operating performance. In general, an oil-cooled system is the most effective for removing heat from …”

M. Mileti, H. Pflaum, K. Stahl TorqueLINE cone clutch: Thermo-mechanical stability of cone clutches for ATs S. I-357-I-368

„… validated model for simulation-driven design of heavy duty truck synchronizers (2015). [12] Isermann, R …” „… mechanical and thermic effects. Hence, a single simulation, be it either mechanical or thermal, could not …” „… simulation tool for both the mechanical and thermic problem is a FEM-based analysis [11], as it can provide …”

G. van Spijk, A. Klaassen, A. van der Leest, A. Brandsma, M. Tweehuysen CVT: dedicated to hybrid solutions – Setting the benchmark on all KPI’s S. I-65-I-78

„… configurations, with and without CVT. This line-up was evaluated by simulations, which enabled an equal vehicle …” „… better or worse fit of the hybrid control strategy to the cycles, the simulations are based upon dynamic …” „… flow. In this typical hybrid mode either the added power of both sources can be used for traction or …”

A. Dietrich, H. Klampfl “Friction Stir Welding” – Lightweight through manufacturing technology – The path from a concept to revolutionary gearbox manufacturing S. I-385-I-396

„… , supports the input torque and the reaction forces of the gears, and manages the lubrication flow. Today …” „… these bearings, various bolts and a liquid sealing are used to provide an oil-tight connection. Because …” „… to NVH issues. Both the strength- and the NHV properties were optimized using simulation tools …”

doi.org/10.51202/9783181023280

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International Conference on Gears 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2389 2022

Treffer in den folgenden Teilen:

L. Hildebrand, F. Dangl, M. Sedlmair, T. Lohner, K. Stahl CFD analysis on the oil flow of a gear stage with guide plate S. 677-694

„… ) simulations to predict the gearbox oil flow and no-load losses. Thereby, the influence of housing geometry and …” „… Computational Fluid Dynamics (CFD) simulations of the oil flow in gearboxes, essential information can be …” „… mechanisms is fundamental for optimal gearbox design. CFD simulations of the gearbox oil flow have the …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… Conference on Gears 8, 2015, pp. 1-10. [20] Ji, Z., et al: Numerical simulations of oil flow inside a gearbox …” „… simulation.Contrary to the experiment, some oil ligaments periodically detach from the wheel in the simulation. This …” „… the simulation at a low speed in a cold start situation shows good agreement with flow patterns of the …”

J. Vorgerd, P. Tenberge, M. Joop Scuffing of cylindrical gears with pitch line velocities up to 100 m/s S. 903-914

„… VDI-Berichte Nr. 2389, 2022 905by an inner housing. By measuring the oil volume flow, the oil injection …” „… ] Facewidth T [Nm] Torque cp [∙] Specific heat capacity V [l/min] Oil volume flow da [mm] Tip circle …” „… damage location and the surface condition. Based on the experimental results, a simulation approach with …”

E. Lamaj, J. Blomeke, F. Rudolph, J. Hermes A comprehensive, fully parametrized calculation model for improved helical-hypoid gearbox efficiency S. 825-836

„… the oil flow behavior (6). Fig. 1: In-depth calculation cores 4. Interface and Calculation Cores …” „… evaluated for different input speeds and oil levels. For the numerical simulation core, Ansys Workbench is …” „… load-independent churning losses of the spur and hypoid gear teeth. Oil distribution and surface wetting are also …”

H.-J. Dennig, L. Zumofen, A. Kirchheim, S. Winterberg, D. Stierli Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling channels S. 1345-1364

„… addition to the manufacturing of force-flow-optimised lightweight structures, e.g., those used in …” „… gear elements are essential [8]. A suitable lubrication system, such as an oil bath or injection …” „… mineral oil material system can be roughly determined with equation (2): ϑ ϑ ? ? ϑ (2) ϑ = test …”

P. Barreiro, S. Pfrimmer, G. Armutcu, J. Hermes Quality improvement of an aluminum gearbox housing by implementing additive manufacturing S. 1429-1446

„… executed by varying the temperature of the cooling oil. The type, number, and distribution of failures of …” „… , the most common defects are gas porosity, shrinkage holes, hot cracking, flow marks, misruns, and cold …” „… right shows the simulation results using Magma Soft concerning the critical solidification zones …”

Y. Marchesse, M. Ruzek, F. Ville, P. Velex On windage power loss reduction achieved by flanges S. 665-676

„… near-wall turbulent region (y+< 3 at the first grid points away from all walls). Simulations based on the …” „… . However, it is difficult to experimentally validate this reason and further numerical simulations should …” „… and most of the flow is expelled axially at the opposite side (expelling side) (16). Setting a flange …”

A. Baumann, B. Bertsche Coefficient of friction behavior of gear oils and significance for the meshing process of spur gears S. 745-762

„… Coefficient of friction behavior of gear oils and significance for the meshing process of spur …” „… Machine Components (IMA), University of Stuttgart Abstract The mechanical properties of oils are …” „… characterization of transmission oil based on its dynamic viscosity alone is not sufficient for the physical …”

A. Gebhard, W. Kassem, M. Oehler Cylinder-on-ring model wear tests as an input data source for the simulation of friction and wear of plastic gears S. 1133-1148

„… the time-resolved gear simulation. Both dry running and oil lubricated gears can be investigated using …” „… needed if the subject of the simulation are oil lubricated gears. In the case of dry running gears no …” „… . Application of the experimental data in the gear simulationThe experimental results from the tribological …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… analysis on the oil flow of a gear stage with guide plate 677L …” „… Transmissions, Chongqing University, Chongqing, ChinaLocal pitting fatigue concept with EHL simulation for case …” „… 157 J. Thomas, ZG Hypoid GmbH, Aschheim, Germany;C. Gosselin, Involute Simulation Softwares Inc …”

K. Kumagai, H. Liu, S. Kurokawa Improving pitting durability by introducing the non-linear wear propagation property of helical gears S. 317-328

„… , Kyushu University, Japan Abstract In this study, a simulation method taking into account sequential …” „… calculation flow. The sequential change in the tooth surface wear state is obtained by applying the following …” „… wear propagation simulation the previous paragraph in order to investigate the influence of the …”

P. Mahendra Rao, S. Foletti, L. Bonaiti, C. Gorla, S. Beretta, F. Concli Mode III threshold under rolling contact fatigue and development of a test gearbox for planet gears S. 499-510

„… mixed approach based on both, numerical simulations and experimental tests is needed. The main goal of …” „… aided in a more compact packaging solution (Fig. 8). Lubrication is of the splash and oil jet-type with …” „… and flow of drive through the system. Table 1: Test rig and test gearbox specifications. Parameter …”

T. Matsumura, K. Mioki, M. Kada, R. Okuizumi, A. Pogačnik Improved calculation methodology for the prediction of tooth temperature of plastic gears S. 1237-1248

„… determined using FEM simulations. The actual contact ratio in-creases with increasing temperature because the …” „… establish the method for obtaining the true COF from the actual contact ratio using FEM simulation …” „… method to derive the actual contact ratio under load and the COF in gears by using CAE simulation and ii …”

W. Kassem, M. Oehler, B. Sauer, S. Schmidt, J. Hausmann Investigation of the time-dependent behavior of plastic gears with local tribological simulation S. 1281-1294

„… geometry of size 2 FE analysis Friction simulationTemperature calculation Wear simulationGeometry …” „… polyalphaolefin-based (PAO) gear oil of viscosity class ISO VG 100 is used. 3. Simulation Methods Finite Element …” „… Investigation of the time-dependent behavior of plastic gears with local tribological simulation …”

D. Mevissen, L. Uhlmann, U. Kupper, J. Brimmers, T. Bergs Analysis of friction of bowl-shaped surface structures resulting from alternative gear manufacturing processes S. 1371-1382

„… surfaceVDI-Berichte Nr. 2389, 20221376the test variants, an oil inlet temperature of T = 60 °C was necessary to reach …” „… lower roughness compared to the wire-eroded surfaces, an oil inlet temperature of T = 80 °C was chosen …” „… ] Klocke, F; Brecher, C.: Zahnrad- und Getriebetechnik: Auslegung - Herstellung - Untersuchung -Simulation …”

doi.org/10.51202/9783181023891

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Dritev 2022

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2401 2022

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Z. Liu, V. Stegmayer, S. Rinderknecht, U. Fechter Multiphase CFD investigation of splash lubrication S. 169-184

„… the end. Keywords CFD simulation, Oil distribution, Churning losses, Influence factors, Comparison …” „… simulations can provide a detailed view of the oil behavior in a com-plex transmission, which is not possible …” „… approach and CFD simula-tion are firstly introduced. After this, the oil distribution and the overall …”

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

„… protect the clutch lining. In addition, the plate temperature has an influence on the oil volume flow for …” „… ?? have an influence on the heat flow derived by convection. The fluid velocity depends on the oil volume …” „… speed ? , clutch pressure ?, oil volume flow ? and oil temperature ? . Data preprocessing The training …”

H. Spånberg Electric Torque Vectoring Disconnect unit, eTVD S. 253-266

„… the oil level in the clutch area. At disconnected state, it is essential to minimize the oil flow …” „… pressure from the actuators will open the valve, allowing oil to flow from the side reservoir to the …” „… transmission losses are reduced or eliminated during disconnect. Simulations show that the WLTP energy …”

M. Hein, S. Prinke, A. Damm, P. Fischer Testing of shift elements – Standardized Methods, State of the Art and Future Challenges S. 73-94

„… through testing, for specific oils on the ZF/FZG SSP-180 test bench with an oil flow of ? 5 ?/???. The …” „… , more conservative approaches are used taking into account a single synchronizer, therefore an oil flow …” „… 10,0Shift speed*** vs mm/sForce ramp up Fg kN/sInertia j kgm²Oiltemperature Toil °COil flow oil …”

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

„… used for the lubrication of the bearings and the gear meshes. Injection nozzles carry the oil flow (0.2 …” „… high-speed domain, as well as the influence of the injection point and oil flow speed. Sensor equipment All …” „… Simulation-based evaluation of high-speed PEEK gears in automotive powertrains and design of a …”

G. Göppert, M. Adrian AI Approach to Wet Friction Torque Model Adaptation S. 321-334

„… summary, we have input speed, output speed, temperature, volume oil flow, and pressure as input. Time …” „… model of the input variables input speed, output speed, cooling oil VDI-Berichte Nr. 2401, 2022 329flow …” „… torque, speeds, cooling volume flow and input temperature. Instead of using the full history of all the …”

P. He, A. Eßer, S. Rinderknecht, M. Schmiedt A Degradation Model of a Wet Friction Clutch based on Theoretical and Experimental Analysis and the Application for a Condition Monitoring Method S. 303-320

„… change of the viscosity. These can lead to the oil’s aging [6–9]. The studies investigate the influence …” „… of oil aging from different aspects. Oil aging has a complex impact on VDI-Berichte Nr. 2401, 2022304 …” „… influence of the oil temperature on the CoF. A wet clutch test rig that operates with both drive torque and …”

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

„… machine control and the limit curves. 2. Simulation of the electric machine The simulation and analyses …” „… dependence of the machine is represented in a system model for the drive cycle simulations, based on lookup …” „… obtained in thermal steady state, at a nominal coolant inlet temperature of 60 °C and a coolant flow rate …”

doi.org/10.51202/9783181024010

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DRITEV – Drivetrain for Vehicles 2021

VDI-Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2381 2021

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R. R. Kasibhatla, P. Neidhardt, K. Caliskan Thermal Simulation according to Maturity Level in E-Drive Development S. 61-76

„… all boundaries, interfaces, material properties and heat flow paths. The advantage of 3D simulation …” „… an expensive process. Measurement techniques to study the oil flow distribution in electric drives …” „… multiphase numerical simulations of oil and air mixture are extensively used to analyse direct oil cooling …”

F. Bayer, J. Tochtermann Development of a Heavy-Duty E-Axle S. 621-636

„… into the e-motor and increases the electrical conductivity. Additionally, the overall oil flow …” „… required can be relatively big. To address the issue of high flow, two electric oil pumps were planned to …” „… achieve the required cooling flow. Additionally, as oil flow is also power, measures were taken to reduce …”

A. R. Lowis, R. Smith hofer H8-DCT-850 – High Performance Dual Clutch Transmission for transaxle application S. 179-190

„… integrated a single variable vane oil pump to supply the high pressure and high flow demands, with an …” „… electro-mechanical oil pump to cover pure electric driving and to boost flow during high power events. The result is …” „… the overall transmission concept and layout was a large, flat oil sump at the bottom of the …”

T. Hillesheim Energy-efficient Hydraulic Control for the Multi-speed Transmission of an Electric Vehicle S. 319-328

„… at a constant flow rate - switchable oil pumps with one high-pressure and one low-pressure stage …” „… non-switchable oil pump with constant flow rate, and on the other hand, a hydraulic accumulator developed by …” „… using the oil pump with constant flow rate, the pump supplies the lubricating oil (which acts at the …”

Z. Caba, M. Zafer, C. Harman, G. Hellenbroich, Ö. Eyigöz Multi-speed e-axle for electrified heavy commercial vehicles S. 609-620

„… lubrication system was designed to provide sufficient oil volume flow to all relevant lubrication points. A 1 …” „… , strainer and an electric oil pump have been selected based on the requirements and simulation results. Fig …” „… challenging package envelope, and based on detailed energy consumption simulations. The final design includes …”

S. Dussinger, T. Wiedemann, B. Harter, B. Wiedenmann Simulation of induced axial forces on planet gear bearings at example of ZF’s 8-speed automatic transmission S. 469-486

„… scope to identify regions with insufficient oil flow, see also Fig. 16. In the wet map contour all …” „… that here an early simulation state is shown and that more segments would be covered by oil with an …” „… oil, right: oil wet map contour Another activity at ESI aims to reduce the simulation time by …”

M. Dilzer BorgWarner P2 Modules – from HV to 48V S. 35-46

„… coolant flow rate. Keeping oil flow rate significantly below 5lpmin for the majority of operation points …” „… given as shown. The information is based on qualified simulation toolchains. The Stator outer …” „… complexity and remove the water coolant channel. A carefully balanced oil cooling configuration allows for …”

C. Schmidt, H. Dhejne, J. Karlsson High Efficient 2 speed e-Axle – Highly efficient and shiftable under load S. 145-158

„… oil flow is in axial direction through the stator slots and allows a direct heat dissipation from the …” „… high efficiency and performance repeatability. New simulation methods are required to obtain an …” „… e-motor as an example. By using a smart and sophisticated power flow architecture, we can guarantee a …”

J. De Landtsheere TREMEC HYbrid DRive Axle – HYDRA – Hybridization enables RWD dynamics in a FWD car S. 125-144

„… torque vectoring AWD system, for which simulations show that performance and fun-to-drive are stepped up …” „… gear set is a non-hypoid design to allow for low viscosity oil instead of typical hypoid lubrication …” „… oil, improving churning losses and clutch controllability. The offset between input and output shafts …”

E. Schneider, C. Danzer, E. Schreiterer Modular and highly functional Hybrid Platform for subcompact cars up to full-size SUV S. 191-206

„… power flow in the first speed for a low mechanical effort and a short gear set with only 3 gear set …” „… simulation of the shift process. Based on the results of this simulation, the main parameters such as shift …” „… oil cooling (no radial space for a water jacket required) for high peak torques and to lower the …”

doi.org/10.51202/9783181023815

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International Conference on Gears 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2294 2017

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

„… direct oil contact. Step two calculates the heat flow from the housing to the environment, considering …” „… to simulate the oil flow inside the gearbox [Fig. 6, left] and the airflow around it [Fig. 6, right …” „… proportion to each other at the correct locations, the correct oil flow and resulting distribution and the …”

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

„… flow) over rolling friction (Poiseuille flow) and approximates the shear rate with an appropriate film …” „… . Investigations are carried out numerically on a finite-element based TEHL simulation model (tribosimulation) and …” „… desired temperature to be injected directly into the inlet region of the disk contact. The volume flow of …”

F. Concli, C. Gorla Numerical modeling of the churning power losses of gears: an innovative 3D computational tool suitable for planetary gearbox simulation S. 881-892

„… , Analysis of the oil squeezing power losses of a spur gear pair by mean of CFD simulations, ASME 2012 11th …” „… suitable for planetary gearbox simulation Franco Concli, Faculty of Science and Technology, Free …” „… Abstract Thanks to the recent developments in the computer science, simulations are becoming an …”

M. Oehler, B. Magyar, B. Sauer A new standardizable calculation method to predict the efficiency of worm gear drives S. 363-372

„… scope of the research project FVA 729 I "Worm Gear Efficiency", a physically based simulation method …” „… different gear sizes and ratios. An extensive parameter study with the use of this simulation program was …” „… ratios. The aim of this work is the development of a physically based simulation method which is …”

J. Yu, L. Yao, C. Ren, X. Yan, L. Lin Design and experimental validation on a novel tow speed transmission for electric bus S. 97-108

„… the simulation for the dynamic of the electric bus, the result demonstrates the dynamic performance of …” „… ratio. Keywords: two speed transmission; electric bus; simulation; experiment 1. Introduction The …” „… simulation and experiments on the two-speed automated manual transmission (AMT) are studied [3], and an …”

Y. Shen, S. Rinderknecht, M. Hoppert General modelling method of power losses in transmission with parameter identification S. 905-916

„… the gear pair spin that are bathed in the lubricant oil or surrounded by an oil-air-mixture, like the …” „… oil churning losses [10]-[12]. Same as the gear losses, the bearing losses are composed also of load …” „… losses due to oil churning Modelling of power losses due to spinning gears is complicated, so most …”

A. Furtmann, G. Poll Electrical stress and parasitic currents in machine elements of drive trains with voltage source inverters S. 109-118

„… whole current of a component has to flow and thus it is an easy spot for measurements. While the …” „… lubrication To compare the voltage dividing behaviour, a simulation of the drive train with calculated …” „… capacitances [1, 8, 9] is done based on a measurement of the common-mode voltage. In this simulation the …”

C. Brecher, C. Löpenhaus, R. Greschert Influence of the grinding process on the formation of boundary layers on gears S. 1427-1438

„… . the tooth flanks are not completely separated by an oil film. Boundary layers, which develop on the …” „… . The metalworking fluid Houghton Excelene 416 is based on hydrocrack oil, which has also been used in …” „… different combinations of ae and vf on a constant level of Q’w convey that the energy flow is also …”

S. Stoyanov, V. Dobrev, A. Dobreva Investigating dynamic behavior of planetary gear trains through the systematic approach S. 197-208

„… transmitted through several symmetrically positioned satellite. Therefore, the power flow is distributed in …” „… simulation with great deformations and nonlinear behavior of material including inertia effects as results …” „… oil presence in gear trains, Fig. 3. The damping effects can influence both the normal and …”

doi.org/10.51202/9783181022948

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Gleit- und Wälzlagerungen 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2308 2017

Treffer in den folgenden Teilen:

D. Vaes, P. Tesini, K. Stadler Evaluation of roller slip losses in wind turbine gearbox high speed shaft bearings S. 283-298

„… and to validate the simulation model. Both the oil flow rate and temperature have a significant …” „… or no load. It is therefore critical to include the influence of the oil flow in the simulation …” „… analysis show the significant influence of the oil flow, operating oil viscosity and bearing arrangement on …”

doi.org/10.51202/9783181023082

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Gleit- und Wälzlagerungen 2023

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2415 2023

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L. Maccioni, F. Concli Flows in Oil-Bath Lubricated Tapered Roller Bearings: CFD Simulations Validated via PIV S. 247-266

„… , Numerical simulations of oil flow inside a gearbox by smoothed particle hydrodynamics (sph) method …” „… Flows in Oil-Bath Lubricated Tapered Roller Bearings: CFD Simulations Validated via PIV Dr.-Ing …” „… formulations to estimate oil flow rates and resistant torques in TRBs have been developed exploiting simplified …”

M. Busch Numerical simulation of rotor and gas-film dynamics in Schaeffler’s foil air bearings S. 221-234

„… ‐lubricated plain bearings, which can lead to speed and load‐dependent natural frequencies, to bearing instabilities and to undesired whirl motion of the rotor at high speeds. Numerical simulations are required to take these complexities into account. A physical bearing model …” „… ) (b) Figure 5: Simulation results of the ENDOF method for the Schaeffler bearings of Fig. 1 …” „… ]. And indeed, the simulation model reveals significant deviations in the load capacity and in …”

J. Dörner, T. Klütsch, Y. Ishibashi, S. Katto Development of Electrical Erosion Resistant Insulation Coating and Overmolding for Bearings in HEV/EV S. 59-78

„… high-frequency current flow through bearings. Often it results in ridge marks, increased vibration and noise and …” „… are insulated, a small amount of capacitor current may flow. Even at low electrical capacitance …” „… . Besides the loads and temperatures, conformity with several types of oil and grease and a dimensional …”

A. Rottmann Additive Fertigung von Wälzlagerringen – Additiv gefertigte Wälzlagerringe mit integrierten Kühlkanälen für Luftfahrtanwendungen S. 79-94

„… assurance, the process parameters for additive manufacturing and the optimized process flow for additive …” „… Kühlkanal wurde eine Simulation der numerischen Strömungsmechanik (CFD) und der kon-VDI-Berichte Nr. 2415 …” „… – 12 l/min Schmiermenge Kühlkanal 0 – 1,8 l/min Öl Mobil Jet Oil II Eine Beispielauswertung der …”

doi.org/10.51202/9783181024157

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Dritev – Drivetrain for Vehicles 2020

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2373 2020

Treffer in den folgenden Teilen:

M. Saborío, O. Sarmiento, C. Böhm High efficiency electric transmission oil pump – Transmission hydraulic efficiency improvement through hybridization S. I-149-I-158

„… moving away from pure mechanical oil-pumps to give space to flow on-demand pure electrical supply …” „… certain amount of flow at zero ICE speed. This is typical for start/stop systems were some oil is …” „… . Achieving flow on demand In order to optimize the overall efficiency of the oil supply system it is …”

A. Manelli, F. Filippo Irato, C. Cavallino, R. Gay e-FDU: Concept, develop & industrialization of a novel P4 powertrain – From concept to industrialization of a novel P4 powertrain in 24 month S. I-45-I-78

„… decision to use an “8” shape like layout, as visible in Fig. 3, and to use an external oil cooling circuit …” „… hydraulic oil. 3. Weight saving: up to 5Kg of weight reduction 4. Installation simplification: no need to …” „… see all the mechanical components which are responsible of the torque flow, in particular the …”

M. Deiml High speed electric drive system – A solution for the next generation E-cars S. II-49-II-62

„… forced lubrication system is increased control over the oil flow rate to each component as well as …” „… that needs to be considered for spraying the oil on gears is the oil flow rate and oil pressure. A …” „… High flow rate and pressure might be needed for gears with high rotational speed to make sure that oil …”

S. Worrall, J. Foulsham, I. Stone, T. Gassmann CeDrive – Electric drive technology for a new era – Advanced cooling and control of high-speed eDrive S. II-33-II-48

„… strong effect of the used hydraulic power (oil pressure and flow rate) reflected by the 10 W and 80 W …” „… shape have an effect on the cooling pattern and the HTC for a given oil pressure and flow rate …” „… with variable switching frequency and sophisticated control software. Advanced simulation tools and …”

T. Casper, G. Spengler, M. Bromberger The high-efficiency fully electric drivetrain of the new Porsche Taycan S. I-289-I-304

„… . Electric oil pump with lubrication as required. Encapsulated final drive gear with targeted oil flow …” „… front and rear axle Tangential Force Diagram Nowadays, modern simulation tools make it possible to …” „… shaft at the end of the electric motor, there is a radial shaft seal ring, which seals the oil chamber …”

C. A. Spangler Borg Warner’s P1 and P2 hybrid drive modules – Modular kit for P1 and P2 hybrids S. I-221-I-232

„… oil with the main transmission a direct acting pressure pump is utilized; For systems where oil …” „… local control hydraulic modules available to add the necessary clutch pressure and lubrication flow …” „… solenoids, gear actuation control pressure and flow solenoids and flow control cooling and lubrication …”

P. Tenberge, A. Alnahlaui E-drive and hybrid-drive with 2 high-speed E-motors and a 2-speed gearbox S. I-233-I-252

„… . Traction fluids from the Japanese oil and additive supplier Idemitsu Kosan Co. Ltd. can create traction …” „… two power outputs of the electric motors flow together. The first electric motor E1 drives the shaft …” „… , the final drive to the differential and a small electrically driven oil pump for lubrication and …”

doi.org/10.51202/9783181023730

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37. Internationales Wiener Motorensymposium 28. – 29. April 2016

Hans Peter Lenz (Hrsg.)

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 799 2016

Treffer in den folgenden Teilen:

I. Hwang, H. Lee, H. Park, K. Hwang, H. Choi, K. Lee, W. Kim, H. Kim, B. Han, J. Lee, B. Shin, D. Chae Hyundai-Kia’s hoch innovativer 1.6L DI Ottomotor für Hybridfahrzeug/Hyundai-Kia’s Highly Innovative 1.6L GDI Engine for Hybrid Vehicle S. II-285-II-303

„… conditions. Figure 10: Flow Simulation of Piston Bowl Shape The effect of squish in combustion …” „… chamber has been confirmed by flow simulation. In case of applying semi-squish, intake flow is weakened …” „… applied. Friction is minimized by the oil control valve (OCV) integrated continuous variable valve …”

M. G. Lisbona, E. Bonamassa, S. Cereda Der neue 2.2 Voll-Aluminium Alfa Romeo Diesel Motor/The New 2.2 All-Aluminum Alfa Romeo Diesel Engine S. II-111-II-137

„… reduce the bearing oil flow (and consequently the oil pump load). Then, bearings performances were …” „… verified by means of elastichydrodynamic simulation to determine oil film behavior and then functional …” „… simulation. Targeting to meet the best NVH behavior, balancer shaft system was completely redesigned …”

B. Fitzsimons, B. Husband, S. Leathers, J. McLean, I. Minards Der neue Aston Martin DB11 V12 Motor/The New Aston Martin DB11 V12 Engine S. I-137-I-158

„… such accelerations and deliver oil at the correct flow, pressure and aeration levels to the lubricated …” „… and braking, and allowing oil to flow back as easily as possible from the rest of the engine. The …” „… high speed filming of the oil flow into the pickup and to view any sudden changes in oil level. 37 …”

G. Boretto, G. Basso, R. M. Frank, L. Borgia, L. Garzarella, R. Carrozza, V. Petronzi, M. Weßlau, A. Bauer Der neue 1,6 Liter Diesel Motor mit 2-stufiger Aufladung von General Motors /The New 1.6 Liter Midsize Diesel Engine with Two-Stage Turbocharging from General Motors S. II-98-II-110

„… turbines shows a substantial improvement in flow capacity and charging system efficiency over the single …” „… further the flow capacity and efficiency of the charging system, a variable geometry turbocharger was …” „… stage is characterized by an extremely low turbine inertia and small flow capacity. It is equipped with …”

T. Niizato, Y. Yasui, Y. Urata, Y. Wada, M. Jono, K. Nakano, M. Taguchi, M. Fischer Hondas neue Turbo-GDI Motorenfamilie für globale Anwendung/Honda’s New Turbo-GDI Engine Series for Global Application S. II-317-II-333

„… that it is useful to reduce Ca concentration in the oil or to reduce oil mist amount in breathing flow …” „… strongly affected by intake port flow coefficient because it directly influences charge efficiency under …” „… high engine speed condition. Therefore strengthening of tumble flow by throttling intake port should …”

W. Warnecke, B. Poulet, J. Landschof, A. Dreyer, J. Müller-Belau, G. Lovett Innovationen von der Rennstrecke auf die Straße: Die Rolle von Kraftstoffen im Motorsport /Innovation from Track to Road: The Role Fuels Can Play in Motorsport S. I-108-I-136

„… fuels, engine and transmission oils. In collaboration with Shell’s Motorsport partners and factory teams …” „… % Nitrobenzene/ Toluene 3% 11% Aviation Gasoline 11% Tetraethyllead (TEL) 10% Castor Oil 1% * 1% * 0,1% Dye …” „… and 10% mineral oil **Density ca. 0,8 kg/l, Heating value 6,5 kWh/l *** Density ca. 0,8 kg/l, Heating …”

doi.org/10.51202/9783186799128

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Kupplungen und Kupplungssysteme in Antrieben 2021

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2382 2021

Treffer in den folgenden Teilen:

V. Föge, S. Blaschke New semi-dry friction solution for highly integrated active torque-controlled drives S. 103-114

„… where the inner shaft flow or the oil sump simply shall be reduced while others want to implement less …” „… understood and explainable. Quantities of oil flow within the application are hardly measurable, centrifugal …” „… application depending on the oil flow-rate. Respectively we have a wide spread from 6.000.000 L oil flow over …”

R. Leister, J. Kriegseis, B. Frohnapfel, D. Gatti, A. F. Najafi Analytical modeling and dimensionless characteristics of open wet clutches in consideration of gravity S. 129-144

„… , respectively and the gap height . From a central region the cooling oil volumetric flow rate is fed into the …” „… , D.: High-resolution 3d cfd multiphase simulation of the flow and the drag torque of wet clutch …” „… ., Hu, J., Yuan, S.: Application of cfd to model oil-air flow in a grooved two-disc system. In …”

D. Groetsch, K. Voelkel, H. Pflaum, K. Stahl Echtzeit-Temperaturberechnung und Temperaturprädiktion nasslaufender Lamellenkupplungen S. 115-128

„… three-dimensional oil flow and unequal pressure distribution due to thermal stresses. Thus, complex two- and …” „… . This paper presents a validated real-time temperature simulation that enables calculation of the clutch …” „… flow between them. The thermal resistances correspond to the thermal resistances between the thermal …”

doi.org/10.51202/9783181023822

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40. Internationales Wiener Motorensymposium 15.-17. Mai 2019

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

Reihe: Verkehrstechnik/Fahrzeugtechnik

Band 811 2019

Treffer in den folgenden Teilen:

B. Lehman, K. Luchansky, C. Mariott, S. Shin Der neue 2.7L Turbomotor von General Motors/The New 2.7L Turbo Engine from General Motors S. I-108-I-130

„… using 3D CFD simulation tools to represent the flow non-uniformity caused by practical packaging …” „… displacement oil pump takes advantage of the times the engine does not need full oil pressure and flow by …” „… additional oil flow and pressure. Enabling the lower pump torque allows for reduced parasitic losses from the …”

V. Verdino, P. Lavazza, D. Rampone, L. Garzarella, A. Mogavero, A. Vassallo, J. Barta, J. Catalogna, S. Franco, C. Marlett, M. Umierski Der neue General Motors 3,0 Liter Duramax Diesel-Sechszylinderreihenmotor für die 2019er Modelle des Chevrolet Silverado und des GMC Sierra /The New General Motors 3.0 Liter Duramax Diesel Inline 6-Cy... S. II-208-II-247

„… mechanical water pump and flow control valve Lubrication System Continuous Variable Displacement Oil Pump …” „… enables circulation to oil coolers and then drives and regulate the flow coming from …” „… accelerate the warm up - Cabin heater mode: maximize the flow to cabin heater keeping the flow closed on oil …”

D. Choi, Y.-S. Kang, l.-C. Cheong, Y.-R. Chung, J.-K. Lee, J. Chun Der neue Hyundai-Kia 2.2L Vierzylinder Dieselmotor - Smartstream D2.2 FR/The New Hyundai-Kia 2.2L 4-Cylinder Diesel Engine - Smartstream D2.2 FR S. II-26-II-48

„… below the PCJ (piston cooling jet) open pressure, the oil flow of the PCJ can be controlled without an …” „… oil pressure control. That provides many options for minimizing oil flow from the oil pump …” „… Motorensymposium 2019 - 30 - Modular design is subject to the following sub-systems: Integrated oil pump and …”

H. Won, A. Bouet, V. Manente, J. Kermani, F. Duffour Potenzial der GCI Technologie - Ein Benzin-Kraftstoff mit hoherer Selbstzündung zur Reduzierung des C02-Fusabdrucks /eines Euro 6d-konformen Personenkraftwagens (PKW) Potential of GCI Technology - Hig... S. II-176-II-191

„… the atmospheric crude oil distillation process has been identified as a highly valuable HRG. The …” „… generic term describing the fraction of crude oil that boils within the 30-180°C range. It is composed of …” „… scope of investigation axes including 0D simulation, CFD simulation, optical diagnostics, extensive …”

doi.org/10.51202/9783186811127

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Ventiltrieb und Zylinderkopf 2017

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2291 2017

Treffer in den folgenden Teilen:

N. Auffret, M. Moretti, D. Palmisani Modular Valve Train Systems for Heavy-Duty engines S. 199-210

„… . Optimization of such system can take place using simulation tools. - Hydraulic Valve Adjuster (HLA): oil …” „… agents) to be sure the HLA system will work properly. Oil pressure should respect not-to-exceed pressure …” „… for cold and hot conditions and oil aeration should be as well at a conventional level. Oil circuit …”

F. Himsel, W. Christgen, V. Schmidt Trends im Ventiltrieb – Variabilitäten für zukünftige Ottound Dieselanwendungen S. 7-26

„… switching gallery is kept air-free by the means of a continuous oil flow, restricted by the orifice and …” „… , the oil pressure is raised by activating the 3/2-way switching valve, i.e. the direction of flow of …” „… consumption simulations The SRFF for CDA applications was refined continuously until an attractive, mass …”

R. Janak, J. Baltrucki Next Generation of Valve Train Technology for Engine Braking and More S. 223-240

„… from the ‘Fail Safe’ BGR, and no fresh air from the intake manifold. The air flow for the1.5 stroke …” „… disabled. Further examination of Fig. 7 reveals that at TDCe (exhaust) = TDC#2 there is some reverse flow …” „… data and simulation results in Fig. 8. Using these strategies, Jacobs was able to realize up to 100 …”

doi.org/10.51202/9783181022917

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Kupplungs- und Bremssysteme für mobile und stationäre Anwendungen

VDI Wissensforum GmbH (Hrsg.)

Reihe: VDI-Berichte

Band 2414 2023

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L. Pointner-Gabriel, K. Voelkel, H. Pflaum, K Stahl A Methodology for Data-driven Modeling and Prediction of the Drag Losses of Wet Clutches S. 125-154

„… identified. The main influencing parameters are the plate size, number of gaps, oil viscosity, feeding flow …” „… injection lubrication, the gap is completely filled with oil in this phase, resulting in a single-phase flow …” „… cavitation models [12, 37, 38] solve the two-phase flow region by considering a viscosity of the oil …”

C. Sax, A. Stroh, R. Leister, M. Dreisbach, J. Kriegseis, C. Denda, P. Bürk Fluid-mechanical evaluation of different clutch geometries based on experimental and numerical investigations S. 109-124

„… measurement of the flow field in six different groove geometries and numerical simulations so as to achieve a …” „… multiphase simulation of the flow and the drag torque of wet clutch discs considering free surfaces …” „… design of such clutches [13]. A variety of different attempts to model the single and two-phase flow …”

P. Strobl, T. Schneider, K. Voelkel, K. Stahl Influence of the Steel Plate on the Friction Behavior of Automotive Wet Disk Clutches S. 21-48

„… with an overall specific oil flow rate of 0.8 mm3∙(mm2∙s)-1 with respect to the nominal friction area A …” „… clutch temperature on the frictional properties (e. g., [8–14]). To measure this influence, the oil …” „… temperatures of the clutch using simulations (e. g., [15–18]). For this reason, there are empirical-based …”

doi.org/10.51202/9783181024140

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International Conference on Gears 2023

Dritev – Drivetrain For Vehicles 2019

Dritev – Drivetrain For Vehicles 2018

International Conference on Gears 2022

Dritev 2022

DRITEV – Drivetrain for Vehicles 2021

International Conference on Gears 2017

Gleit- und Wälzlagerungen 2017

Gleit- und Wälzlagerungen 2023

Dritev – Drivetrain for Vehicles 2020

37. Internationales Wiener Motorensymposium 28. – 29. April 2016

Kupplungen und Kupplungssysteme in Antrieben 2021

40. Internationales Wiener Motorensymposium 15.-17. Mai 2019

Ventiltrieb und Zylinderkopf 2017

Kupplungs- und Bremssysteme für mobile und stationäre Anwendungen