VDI Verlag eLibrary

Design and Optimization of Oil-Cooled Medium-Frequency Transformers with Foil Winding and Toroidal Core for High Power Applications

Siqi Lin

Series: Berichte aus dem IAL

Volume 05/2024 2024

doi.org/10.51202/9783959009454

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Dritev 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2420 2023

Results in this title

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

„… cost from the water circuit will be used to realise the oil cooled motor and the active lubrication …” „… . The removal of the water circuit is a first level system cost optimization. The oil cooled motor and …” „… / DCDC / PDU also cooled by the oil. The 3in1 eAxle performance can achieve up to 70kW and 1600 Nm at the …”

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

„… design of a high-performance oil-cooled PMSM-based e-drive system considering these requirements is …” „… situations the decision was made to design a Direct Conductor Cooling approach. Therefore, the gearbox oil is …” „… the oil covers the coils within the slots and also cools the winding heads. Braided winding. The …”

B. Cebulski, S. Mühlbauer, D. Sailer, L. Schmieden, R. Wunderlich, O. Seidler, A. Stiegelmeyr About the benefits of permanent rotor temperature measurement S. 143-152

„… error in direct oil-cooled machines is caused by the unsteady oil flow, which is influenced by oil …”

M. Gukelberger Magna’s Dedicated Hybrid Drive DHD Duo – a Platformbased two e-Machine System S. 197-204

„… cooled by an oil spray cooling. The inverter is a double inverter, which is connected to the …”

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

„… oil-cooled electric traction machines, the following value ranges apply overall: Peak performance: AEff …”

doi.org/10.51202/9783181024201

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

Hans Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 799 2016

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S. Ando, K. Takashima Hocheffiziente Performance – Der neue Infiniti 6-Zylinder Benzinmotor mit Direkteinspritzung und Turboaufladung /Highly Efficient Performance – The New Infiniti V6 Petrol Engine with Direct Injection ... S. II-334-II-354

„… limit at static condition and an air cooled oil cooler system were adopted. For good environmental …” „… air-cooled oil cooler, oil temperature is stable and kept in normal temperature range. 37. Internationales …” „… , integrated exhaust manifold, multi flow controlled thermal management, variable displacement oil pump and …”

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

„… high compression ratio, cooled exhaust gas recirculation (EGR) and high tumble intake ports are …” „… applied. Friction is minimized by the oil control valve (OCV) integrated continuous variable valve …” „… timing (CVVT), low viscosity engine oil and the two-stage pressure control oil pump. Also to meet the …”

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

„… the clearance increase in hot conditions under control in order to guarantee the oil film presence and …” „… 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 …”

R. Smaling, D. Mohr, D. Eckroth, A. Desai, C. Lana, Y. Yuan, K. Li Entwicklung eines Erdgas-Motors für Lastkraftwagen/Development of an On-Road Heavy Duty Natural Gas Engine S. II-385-II-402

„… stoichiometric combustion with cooled exhaust gas recirculation and 3-way catalysis. However, significant design …” „… given, the SI Stoichiometric Cooled EGR Heavy-Duty natural gas engine architecture is the preferred …” „… , cooled EGR MD and HD natural gas engines by Cummins-Westport, Scania, and Daimler, among others, support …”

Y. Ohta, S. Fushiki, S. Matsuo Der neue PRIUS Antriebsstrang: Der neue 1.8L ESTEC 2ZR-FXE Motor mit dem neuen Hybridsystem /The New PRIUS Powertrain: The New 1.8L ESTEC 2ZR-FXE Engine with the New Generation Hybrid System S. II-83-II-97

„… Combustion Characteristics and Knocking Cooled EGR is widely known as a technology to reduce knock and …” „… . The new ESTEC 2ZR-FXE has been developed to utilize cooled EGR ratio. 37. Internationales Wiener …” „… Motorensymposium 2016 - 86 - - 5 - Figure 5 Effect of Cooled EGR on heat balance 3-1-1. High-Speed …”

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

„… and oil connecting pipes, the exhaust manifold bolts remain accessible for their fixation to the …” „… ) and HP VGT mechanism. Both turbochargers have a water-cooling center housing to avoid oil coking and …” „… withstand the most severe driving conditions. An oil filter has been installed at the turbochargers oil …”

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

„… the application of 0W-20 low viscosity engine oil, which is a result of full use of tribology …” „… can be expanded. A water-cooled, cylinder head integrated exhaust port also contributes to this point …” „… additive in engine oil, and so on are being investigated recently [3][4][5]. The 1.5l and the 2.0l turbo …”

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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Drivetrain Solutions for Commercial Vehicles

VDI Wissensform GmbH (ed.)

Series: VDI-Berichte

Volume 2421 2023

Results in this title

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

„… stator is covered by a water-cooling jacket and the rotor is cooled by oil. This allows a very good ratio …” „… the vehicle therefore an external connection is not required. The oil is cooled by an internal …” „… directly connected to the water-cooled housing. In addition, the winding heads of the stator are cooled, by …”

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

„… cooling concept for the e-motor. Rotor and stator are both cooled with pure oil, which provides high …” „… pump is used. The oil is water-cooled in a heat exchanger, where also VDI-Berichte Nr. 2421, 202340the …” „… efficiency. There is no longer a water jacket in the outer housing as was previously the case. The oil is …”

doi.org/10.51202/9783181024218

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Dritev – Drivetrain For Vehicles 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2354 2019

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L. Herdle 7DCT/HDT400 – New fuel-efficient FWD DCT and hybrid transmission for up to 400 Nm S. I-95-I-102

„… eMachine possible) • Oil-cooled eMachine integrated in transmission • MHEV 48V Hybridization • 15 - 25 …” „… kW eMachine • Water-cooled inverter, directly connected to eMachine • Weight 90 kg (incl. oil, 48V …” „… churning of the oil • Further integration step at the clutch actuator As one result, the new …”

M. Özbek, J. Trommer, K. Akiyama, Y. Yamada Nidec next generation electric traction motor S. II-77-II-84

„… efficiency. Electric motors for vehicle application can either be air-cooled, water cooled or oil cooled. As …” „… hollow for applications that allow oil- VDI-Berichte Nr. 2354, 201978 cooling of the motor. The design …” „… uses the rotational forces to spray oil radially from the shaft directly onto the coil-ends of the …”

P. Lück, K. Bennewitz, J. Tousen Volkswagen’s electric drivetrains of the new modular e-drive kit (MEB) S. I-515-I-530

„… is generated by a liquid-cooled power inverter (PI) mounted directly on the electric machine. Fig. 4 …” „… cooled and framed so that the driver board can be plugged directly onto the power module’s contact pins …” „… the PI, but designed as a separate, liquid-cooled component. The converter can be variably installed …”

A. Harsch, G. Clausen, A. Rink Modular system 8G-DCT with all-wheel drive S. I-79-I-94

„… technical features of the compact high-performance wheelset and the dry sump concept of the oil household …” „… compact design and the implemented lightweight design measures, the weight (including transmission oil …” „… nested radially, hydraulically actuated and cooled on an on-demand basis. A re-design of the frictional …”

M. Lindström Gas powered heavy duty vehicles from Scania: Current program and future potential S. III-49-III-54

„… production at off-shore oil drilling rigs. They were powered by natural gas that would otherwise have been …” „… engines using a three-way catalyst. They also utilize cooled EGR as a means of reducing turbine inlet …”

doi.org/10.51202/9783181023549

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Commercial Vehicles 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2350 2019

Results in this title

M. Lamke, M. Eisele, F.-D. Speck ZF Kit for E-Mobility Products for Commercial Vehicles S. 73-86

„… Stator: water cooled T/M: oil injection Stator: water cooled T/M: oil injection Stator: water …” „… and air cooled T/M: splash EM and T/M: oil injection Pump type electric electric - mechanic …” „… oil-cooled but no additional water cooling is necessary. The stator is mounted in the aluminum housing using …”

doi.org/10.51202/9783181023501

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

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

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 811 2019

Results in this title

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

„… bar - VGT with ball bearing - Water cooled air charger - Dual Loop EGR - cc_LNT/DPF+uf_SCR *1 …” „… bearing turbocharger system Water cooled air charger (intercooler) and dual loop EGR system …” „… Motorensymposium 2019 - 30 - Modular design is subject to the following sub-systems: Integrated oil pump and …”

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

„… Aluminum Timing Drive 2-layer chain + oil-pump-driven belt Cooling System Active Thermal Management with …” „… mechanical water pump and flow control valve Lubrication System Continuous Variable Displacement Oil Pump …” „… ball bearing EGR System HP-EGR (uncooled) + LP-EGR (cooled) Charge Cooling System Low-temperature water …”

doi.org/10.51202/9783186811127

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Drivetrain for Vehicles 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2313 2017

Results in this title

H. Gröhlich, D. Germershausen DQ381- The latest generation of dual-clutch transmissions from Volkswagen S. 3-4

„… transmissions with oil-cooled dual clutches with the goal of increasing the efficiency throughout the design …” „… . That transmission features 6 gears and an oil-cooled dual clutch. Until today, it has been used very …”

P. Janssen, Y. Zhang Full hybrid planetary transmission with on demand actuation- FEV's newest member of the PREX transmission family S. 49-50

„… presented world´s first diesel hybrid vehicle. This vehicle already had a highly integrated, oil cooled …”

doi.org/10.51202/9783181023136

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DRITEV – Drivetrain for Vehicles 2021

VDI-Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2381 2021

Results in this title

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

„… . Design and evaluation of thermal performance of oil cooled machines just based on the measurements is …” „… terms in the mixture momentum equation. Fig. 3: Oil cooled electric drive in ZF 8HP Automatic …” „… . Optionally the rotor shaft can also be cooled through same coolant as shown in Fig. 1. Higher turbulent …”

D. Morgenweck, M. Großmann, W. Fakler, M. Lamke, F. Bitzer ZF E-Mobility Software Functions for Commercial Vehicles S. 703-718

„… cooled T/M: oil injection Stator: water cooled T/M: oil injection Stator:water and air cooled T/M …” „… overall efficiency, ZF decided to use a normal water-cooled stator system combined with an oil circuit …” „… additionally cooled by an electric oil pump, combined with an extra oil cooler. Thus, the continuous power of …”

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

„… was made. As mentioned before, the decision was made to use direct oil cooled e-motors. This decision …” „… . 2381, 2021 631 The oil circuit itself is cooled via an oil/water heat exchanger, from where the heat is …” „… components had to be distributed to the front and rear. At the front, two oil pumps were placed face to face …”

A. Bagh, D. Magnor, J. Kneiber, F. Löhe eTransport – Application of axle-integrated e-drive in urban LCV and MD trucks S. 637-652

„… provided by two oil cooled electrical motors (2), (3) that are integrated in one cast iron motor housing …” „… to two drive shafts (6) in the axle body that are connected to the wheel ends. The motor oil …” „… Mercedes-Benz Vario the scope of supply besides e-axle, inverter and motor oil cooling system includes a …”

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

„… speed. Fig. 4: E-Motor Cost / Volume vs. Speed The stator is cooled directly via oil on the …” „… oil flow is in axial direction through the stator slots and allows a direct heat dissipation from the …” „… conductors to the fluid. The oil is kept VDI-Berichte Nr. 2381, 2021150 inside the slator slots due to …”

doi.org/10.51202/9783181023815

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International Conference on Gears 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2389 2022

Results in this title

T. Arndt, J. Klose, M. Gerstenmeyer, V. Schulze Tool wear development in gear skiving process of quenched and tempered internal gears S. 1331-1344

„… roughness development over the manufactured gaps and the associated wear, dry, oil-cooled and MQL processes …” „… . 7). While in the oil-cooled process the feed marks are clearly visible in the measured values over …” „… leads to a reduction of the tool life by 85% for the dry and by 70% for the oil cooled test. Therefore …”

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

„… , the areas to be cooled down in a controlled way were identified and the corresponding cooling system …” „… executed by varying the temperature of the cooling oil. The type, number, and distribution of failures of …” „… concentrate heat during casting, thus the mold must VDI-Berichte Nr. 2389, 2022 1433 be adequately cooled. The …”

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

„… 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 …” „… determine the so-called load stages of an oil. The smaller the load level is, the lower the safety against …”

S. Sklenak, J. Brimmers, C. Brecher Analysis of local wear within the dry lubricated rolling- sliding contact of coated surfaces S. 305-316

„… contacts in gear drives are usually lubricated with liquid lubricants, such as oil or grease. However …” „… Liquid lubricant, such as oil and grease is used in gear applications to separate the tooth flanks, which …” „… gear drives is limited due to the lubricant properties [3]. In the case of oils and greases, extreme …”

I. Hong, Z. Teaford, A. Kahraman A comparison of gear tooth bending fatigue lives from single tooth bending and rotating gear tests S. 45-74

„… machines used in this investigation. Lubrication and heat removal were accomplished via a liquid-cooled oil …” „… oil impregnated bronze acting as a bushing between the test gear inner diameter and the locating shaft …” „… ., Illenberger, C., Oster, P., Tobie, T., and Stahl, K., 2018, “Potential of Oil-Lubricated Cylindrical Plastic …”

doi.org/10.51202/9783181023891

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Ventiltrieb und Zylinderkopf 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2291 2017

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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 …”

doi.org/10.51202/9783181022917

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Dritev – Drivetrain for Vehicles 2020

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2373 2020

Results in this title

G. Gardner Ford MACH-E Primary Electric Drive Unit S. I-1-I-6

„… developed in conjunction with Borg Warner for the gearbox design and final assembly with an oil cooled …” „… permanent magnet oil cooled motor developed with LG serves as the propulsion mechanism in the PDU. The …” „… integrated water to oil cooler assembly that mounts directly to the transmission case as shown in Figure 3 …”

V. Null A new generation of thermal fluid technology for high performance charging of electric vehicles – How new thermal fluids can enhance battery performance in EVs S. II-97-II-108

„… Gas-to-Liquid base oil technology (GTL). In this synthetic process, methane is converted to liquid GTL products …” „… chemical industry, transport fuels and high purity base oils. Fig. 1 gives an overview of the …” „… Gas-to-Liquid process. The use of GTL base oil technology provides significant performance benefits for the …”

P. Lück, K. Bennewitz, J. Tousen, J. Peter The front-axle drive of the MEB – Volkswagen expands the e-drive portfolio S. I-7-I-26

„… cooled-down oil is directed towards the rotor's short circuit rings via the channels in the cast housing …” „… drive's induction machine is generated by a liquid-cooled power inverter that is mounted directly on …” „… supplied with oil that is factory-filled for life. In addition to VDI-Berichte Nr. 2373, 2020 19 the pure …”

G. Gardner 10R80 – Cost efficient modular hybrid transmission (MHT) S. I-285-I-288

„… engineered and manufactured by Schaeffler. The MHT transmission combined with a liquid cooled battery pack …” „… a modified oil pan with hydraulic feeds to the bolt on MHT module and a unique e-pump that …”

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

„… package. Cavities and clever oil routing were used accordingly. The gearbox is cooled via the flange …” „… shaft at the end of the electric motor, there is a radial shaft seal ring, which seals the oil chamber …” „… the torque-conducting components is passive (no oil pump), the oil quantity of 0.73 litres is due to …”

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

„… : - Water jacket - Oil lance in the rotor - Oil jet impingement outside of winding head - Oil spray …” „… today. A slight improvement in continuous power can be achieved by cooling the rotor with oil (oil …” „… strong effect of the used hydraulic power (oil pressure and flow rate) reflected by the 10 W and 80 W …”

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

„… achieve this, the stators of these motors are cooled from the outside and possibly in the slots of the …” „… windings or in another grooves. The end windings are also cooled. And, furthermore, the rotor can …” „… . Traction fluids from the Japanese oil and additive supplier Idemitsu Kosan Co. Ltd. can create traction …”

P. Ramminger, R. Jäger Evolution of the drivetrain and high voltage system in the new Corsa-e S. I-173-I-194

„… differential & housing strategy Buy. Design with integrated e-Motor, hollow shaft, premium parts, oil pump …” „… 204 mm Pole pairs 4 4 Cooling Water jacket Oil. Dissipation within drive unit VDI-Berichte Nr …” „… . Here, the stator of the e-motor leverages the thermal mass of the Transmission and is also cooled by …”

doi.org/10.51202/9783181023730

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International Conference on Gears 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2355 2019

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H.-J. Dennig, S. Winterberg Test stand for internally cooled metal gears S. 1263-1266

„… Test stand for internally cooled metal gears Dr. Hans-Jörg Dennig, Simon Winterberg, Zurich …” „… In the event of a shortage of lubricating oil or an interruption of the lubricating film, the …” „… gear wheel can be sufficiently cooled via integral cooling channels, this loss will be reduced, and …”

D. Kurten, A. Kailer Hydrogen embrittlement of oil lubricated contacts S. 681-688

„… Hydrogen embrittlement of oil lubricated contacts Dr.-Ing. Dominik Kürten, Dr. rer. nat …” „… sliding test oils and greases can be tested. Different sliding speeds and contact pressures can be …” „… detection, which is used as a shut-off criterion for the tests. The test bench can be heated and cooled to …”

M. Yilmaz, T. Lohner, K. Michaelis, K. Stahl Minimizing gear friction with water-containing gear fluids S. 669-680

„… gearboxes was cooled and heated in order to control the oil sump temperature ϑOil. VDI-Berichte Nr. 2355 …” „… on gearbox losses and heat balance. Synthetic oils can exhibit significantly lower gear friction …” „… than mineral oils. Recent basic research on water-containing gear fluids has demonstrated …”

H.-J. Dennig, S. Monn, A. Vodermayer Thermoplastic high performance composite gears S. 1279-1290

„… plastic/plastic spur gear pairing. It provides better heat dissipation for both dry running and grease/oil …” „… oil lubrication. In addition to the actual lubrication effect, there is also the positive effect of …” „… improved heat dissipation by the oil. Manufacturing: Short fibre reinforced plastic gears are mainly …”

Titelei/Inhaltsverzeichnis S. I-XXVI

„… 229 R. Slatter, Sensitec GmbH, Lahnau Deep online oil analysis of dielectric parameters for life time …” „… München, Garching Hydrogen embrittlement of oil lubricated contacts …” „… 835 H. Aurrekoetxea, I. Ruiz de Ocenda, Gamesa Gearbox, Bilbao, Spain A study of gear oil performances …”

doi.org/10.51202/9783181023556

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International Conference on Gears 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2294 2017

Results in this title

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

„… analyses of gearsets The system shown in the model in Figure 4 is cooled by an oil cooling system, for …” „… Interactions between a gearset and an electric drive Thermal behavior of an actively cooled gearset The …” „… we have to stop the system automatically to avoid oil flaming or teeth damage as a result of …”

B. Zhmud, J. Blomkvist, M. Fallström An advanced thermal processing & coating process for enhancing gear tribology S. 1451-1462

„… product is cooled down. Fast quenching after nitriding will increase the solution hardening effect from …” „… terms of hardness, wear resistance and fatigue strength. Quenching oil and heat treatment fluids are …” „… reactive quench oil concept whereby a solid lubricant layer is created at the surface of nitrocarburized …”

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

„… transported by the oil, which is distributed by the rotating parts like gears. Without external cooling …” „… used in a more efficient way. Increasing the oil temperature is limited due to lifetime reduction …” „… velocity at surface cooled gearboxes, using fans is a common solution. Mounted to the fast rotating input …”

doi.org/10.51202/9783181022948

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Commercial Vehicles 2021

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2380 2021

Results in this title

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

„… = 5,9 Two-stage ratio i = 22,7 Cooling / lubrication system Stator: water cooled T/M: oil …” „… injection Stator: water cooled T/M: oil injection Stator:water and air cooled T/M: splash Pump type …” „… a normal water-cooled stator system combined with an oil circuit for transmission cooling …”

doi.org/10.51202/9783181023808

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