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VDI Wissensforum GmbH - International Conference on Gears 2023

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2023

Series: VDI-Berichte

Volume 2422 2023

Results in this title

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

VDI Wissensforum GmbH - Dritev – Drivetrain For Vehicles 2019

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VDI Wissensforum GmbH (ed.)

Dritev – Drivetrain For Vehicles 2019

Series: VDI-Berichte

Volume 2354 2019

Results in this title

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

VDI Wissensforum GmbH - Dritev – Drivetrain For Vehicles 2018

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VDI Wissensforum GmbH (ed.)

Dritev – Drivetrain For Vehicles 2018

Series: VDI-Berichte

Volume 2328 2018

Results in this title

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

VDI Wissensforum GmbH - International Conference on Gears 2022

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

Results in this title

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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VDI Wissensforum GmbH (ed.)

Dritev 2022

Series: VDI-Berichte

Volume 2401 2022

Results in this title

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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