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Kupplungs- und Bremssysteme für mobile und stationäre Anwendungen

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2414 2023

Results in this title

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

„… paper-based fric-tion material can affect the frictional properties of a friction system [30]. In addition to …” „… installed in the LK-3 test rig and examined for their frictional behavior in micro slip and static friction …” „… Properties of Automatic Transmission Fluids: Part I - Measurement of Friction-Sliding Speed Behavior …”

I. Minas, N. Morris, S. Theodossiades, M. O’Mahony, J. Voveris A Methodology to Study Automotive Brake and Dry Clutch NVH S. 155-168

„… determined friction coefficients. The frictional data are measured using samples obtained from the simulated …” „… . Driveline dynamics simulation and analysis of the dry clutch friction-induced vibrations in the eek …” „… . (2002) ‘Analysis of friction-induced vibration leading to “EEK” noise in a dry friction clutch’, in The …”

A. Sutschet, K. Bause, A. Bischofberger, S. Ott Feinstaubemissionen trockenlaufender Friktionssysteme in Fahrzeugen S. 3-18

„… the wear particles, knowledge can also be gained about friction processes in the friction system. In …” „… to gain deeper knowledge about the formation mechanisms of wear particles in the friction contact …” „… information for the existing friction behavior in the friction contact. The method is intended to provide …”

S. Altenburg, F. Schuchter, K. Bause, A. Albers Nutzung von KI-Methoden für die Kupplungsentwicklung in automobilen Antriebssträngen S. 199-216

„… neural networks, a friction coefficient model and a temperature model of a clutch with high accuracy are …” „… friction ma-terials by means of artificial neural networks. Wear 262(7-8):778–790. https://doi.org/10.1016 …” „… abnormal tribological regimes using a microphone and semi-supervised machine-learning algo-rithm. Friction …”

R. Fehrenbacher, Rongji Li, A. Sutschet, K. Bause, A. Albers Methode zur vorausschauenden Bestimmung von Abkühlzeiten bei trockenlaufenden Reibpaarungen – Entwicklung und Anwendung eines mathematischen Modells S. 185-198

„… investigate and ensure the stability and reliability of such systems. During these tests, the friction discs …” „… calculation model to predict the expected cooling time of a friction disk on a test bench at IPEK - Institute …” „… /10.1016/0043-1648(80)90199-4. [2] W. Grzegorzek and S. F. Scieszka, "Prediction on friction characteristics of industrial …”

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

„… the material properties of the friction lining affect the drag loss behavior [12, 21]. The …” „… sizes and numbers of gaps, the drag torque is related to the mean diameter and the total friction …” „… their effect. For instance, even the influences of the material properties of the friction lining, a …”

Titelei/Inhaltsverzeichnis S. I-X

„… , Österreich TribologieInfluence of the Steel Plate on the Friction Behavior of Automotive Wet Disk Clutches …”

A. Bischofberger, K. Bause, S. Ott, A. Albers Schwingungsreduzierung durch nasslaufende Lamellenkupplungen – Gezielte Auslegung des Tribosystems für einen effizienten Einsatz S. 67-82

„… friction pairings and thereby influencing the surface pres-sure, is being investigated as part of the …” „… Öladditiverung (flacher Reibungszahlgradient),  OFM01-OFM04: Veränderte Öladditivierung (Friction Modifier …”

M. Baese, A. Lebel Analyse der Einflussparameter auf Performance und Lebensdauer von nasslaufenden Fahrzeugkupplungen S. 49-66

„… influencing the tribological process and their degree of influence on friction level and friction behavior …” „… der Reibungszahl „CoF“ (Coefficient of Friction) als Maß für das Reibungsniveau. Während der …”

J. Neumeyer, H. Baumgartl, M. Hanke Auslegung einer Wirbelstrombremse mittels numerischer Simulation S. 169-184

„… systems operating on the principle of mechanical friction continue to be used for the most part for …”

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

„… relative rotation of the disks (friction and steel disks). In the present case of braking operation, this …” „… parallel fric-tional plates in hydroviscous drive. Chinese Journal of Mechanical Engineering 25(1), 144–152 …”

doi.org/10.51202/9783181024140

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Kupplungen und Kupplungssysteme in Antrieben 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2341 2019

Results in this title

M. Hoic´, B. Škugor, J. Deur, A. Tissot Experimental characterization and modeling of automotive dry clutch friction lining wear – Clutch lifetime prediction S. 25-36

„… vorgestellt. Abstract The paper presents results of experimental characterization of dry clutch friction …” „… . 1. Introduction The term dry friction wear encompasses different physical processes. While a …” „… significant influence on the wear rate indeed. Other research results indicate that for various friction …”

U. Stockinger, K. Völkel, H. Pflaum, K. Stahl, K. Mühlenstrodt, D. Lipinsky, H. F. Arlinghaus Analyse tribologischer Schichten mit der Flugzeit-Sekundärionenmassenspektrometrie (ToF-SIMS) – Additiveinflüsse auf das Reibungsverhalten nasslaufender Lamellenkupplungen S. 197-210

„… with Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) Additive’s influence on friction …” „… Zusammensetzungen der Grenzschichten bei ähnlichem Reibungsverhalten. Abstract The friction behavior of wet …” „… interactions between the components. Therefore, experiments are required. Friction measurements of power shifts …”

T. Klotz, S. Ott, A. Albers Analyse des Schädigungs- und Erholungsverhaltens trockenlaufender Friktionspaarungen S. 37-46

„… . K.: Friction properties of a phenolic resin filled with iron and graphite - Sensitivity to load …” „… . K.: Influence of modified phenolic resins on the fade and recovery behavior of friction materials …” „… , Wear 259 (2005) 7-12, S. 1068– 1078 [5] Rakowski, W. A.: The surface layer of friction plastics, Wear …”

T. Schneider, M. Strebel, H. Pflaum, K. Stahl Spontanschädigungsverhalten von nasslaufenden Lamellenkupplungen mit organischen und metallischen Reibbelägen S. 275-290

„… Reibbelägen Spontaneous damage to wet-running multi-plate clutches with organic and metallic friction …” „… multi-plate clutches with organic and metallic friction materials is reported with regard to spontaneous …” „… reveal that the specific friction loss, which a clutch can bear, increases as the maximum of the …”

H. Gürbüz, S. Ott, A. Albers Entwicklungsansätze für innovative Hochdrehzahlkupplung in E- Fahrzeugen S. 85-100

„… strength and controllability. With the main goal of systematically researching and developing new friction …” „… is quantified. Furthermore, the design of the friction system for fiber composite and Sinter friction …” „… order to find economic solutions to positively influence the system behavior of the friction clutch …”

F. Nickel, M. Mühlegger Trockenlaufende Lamellenkupplungen – Eine neue Option zur Verwirklichung einer hochintegrierten aktiven Drehmomentregelung für konventionelle und elektrifizierte Antriebe S. 13-24

„… multi-plate clutches in order to maximize efficiency pose major challenges to the friction system in terms of …” „… lubrication, a corresponding solution for the friction system is required. With the help of the friction …” „… Entwicklungsaufgabe diese Friction Modifier in die Materialstruktur des PCC® Belages einzubetten und auf diese Weise …”

K. Völkel, H. Pflaum, K. Stahl Einflüsse der Stahllamelle auf das Einlaufverhalten von Lamellenkupplungen mit Papierreibbelag S. 231-246

„… Influences of the Steel Plate on the Running-In Behavior of Wet Multi-Plate Clutches with Paper Friction …” „… a result of manufacturing may influence the friction- and running-in behavior. Distinct changes of …” „… the friction behavior can occur and make the actuation of the clutch challenging. This contribution …”

A. Dempfle, P. Fischer, P. Echtler, A. Damm, F. Matthies, J. Müller, K. von Rüden, T. Köhler Schaltkomfortbewertung konischer Schaltelemente mit Formschluss für lastschaltbare Automatikgetriebe S. 155-168

„… , Chemnitz/Stollberg & Berlin VDI-Berichte Nr. 2341, 2019 155 Abstract The substitution of multiple plate friction …” „… systems (MPFS) by conical friction clutches in automatic transmissions (AT) offers a considerable …” „… in the context of this article therefore consists of conical friction elements and a form-locking …”

Titelei/Inhaltsverzeichnis S. I-VII

„… modeling of automotive dry clutch friction lining wear – Clutch lifetime prediction …”

H. Lührs, K. Sittig, T. Niendorf Cladded steel for clutch disc carriers – On the formability and wear properties S. 247-260

„… of 2.15 mm were mounted to the cross beam with friction discs as spacer. The disc carrier was …” „… eventually negatively affect the torque capatity of the friction clutchs. Fig. 6: (a) Wear rates as …”

S. Jones, H. Böhm, E. Bogner Driveability lead Model Based Development of HW & SW for P2 Hybrid Impulse Start – A novel methodology supporting virtual development of hybrid powertrains including monitoring of driveability from co... S. 59-72

„… and 65kW EM propulsion power (leaving only a 25kW reserve), with a cold ICE (the higher friction …”

D. Grötsch, K. Völkel, H. Pflaum, K. Stahl, R. Niedenthal Effiziente CFD-Simulationen zur Berechnung des Schleppmoments nasslaufender Lamellenkupplungen im Abgleich mit Prüfstandmessungen S. 101-118

„… wet multi-plate friction clutch with groove consideration. Ind Lubrication and Tribology 70(7 …”

doi.org/10.51202/9783181023419

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Dritev – Drivetrain For Vehicles 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2354 2019

Results in this title

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

„… run in life cycle tests and the influences of sliding velocity, friction work and frictional power …” „… Single vs. Multi-Cone Synchronizers with Carbon Friction Lining – A Comparison of Load Limits and …” „… synchronizers with carbon friction linings and their corresponding deterioration mechanisms. Load limits for …”

H. Merkel Solutions for increased power density at shifting clutches S. I-197-I-212

„… increase the power density of shifting clutches. New friction materials with increased static coefficient …” „… of friction have been developed to allow for a compact clutch design. BorgWarner has also developed …” „… new high performance friction materials which can handle higher interface temperatures without …”

H. Gürbüz, S. Ott, A. Albers Potentials for improving the system behaviour of highspeed clutches for BEV using optimal transmission springs S. I-265-I-278

„… stable position of the friction and steel discs and prevent high drag losses in the open state of the …” „… “Highspeed Clutch” Miba develops and manufactures the friction pairs and sliding coatings required for …” „… developing and supplying technical springs for separating the friction pairs and piston return, Mubea is …”

H. Göbbels, S. Scholz, S. Volkmer Efficient 6-speed manual transmission for modern downspeeding solutions S. I-411-I-426

„… reducing drag loss, a new bearing solution, and friction-optimized bearing seals are used. These changes …” „… having a max. torque capacity of 340 Nm. VDI-Berichte Nr. 2354, 2019 417 3.3 Friction-optimized …” „… to optimize friction at bearings and seals. In addition, the performance specification required an …”

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

„… pressure levels. Here, the leakage losses of an oil feed are avoided totally, but the friction losses are …” „… present, too. The friction losses are not only geometry and lubrication dependent but also force and speed …” „… dependent. The friction torque of one engage bearing in a proper designed gearbox at “normal” operating …”

S. Sudo, T. Maeda, R. Kobayashi Drivetrain trend of truck of Asian market and new technology drive train for HD truck S. III-1-III-8

„… as previous transmission. 3.Carbon friction material synchronizer (M009) Carbon friction material …” „… shifting in actual operation condition. Fig5: Carbon friction material Fig6 …” „… : PV chart of Carbon friction material 4.Definition durability target of each component by load …”

C. Kim New next generation eight-speed automatic transmission for FWD vehicles S. I-397-I-410

„… increase the transmission efficiency, the clutch drag and oil pump loss was minimized and low friction …” „… to reduce the friction loss, from the efforts, special coating was applied to the bearing roller to …” „… reduce the friction loss drastically. Bearing for special coating has not been newly developed and …”

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

„… rearmost VDI-Berichte Nr. 2354, 2019 77 4 position. The locking element, embodied as a friction …” „… strength polymer and is used in its as-cast state. When lubricated, friction properties have been proven …” „… larger variations in friction and high wear rates on both the nut and lead screw, as can be seen in Fig …”

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

„… adapting the dual clutch. This is achieved by varying the number of friction plates and the use of …” „… friction plates. [7] VDI-Berichte Nr. 2354, 201984 Fig. 4: Dual clutch unit and mechanical pump drive …” „… Maximum speed 7,300 rpm Touchpoint Clutch 1 ~ 2.0 bar Clutch 2 ~ 2.3 bar Gain 50 Nm / bar Friction …”

A. Kooy, R. Seebacher Minimize torsional vibrations – Full isolation if necessary S. I-313-I-328

„… industrial scale. Pendulum mass guide friction may constitute another disturbance. That is why very rigid …” „… rollers are mostly used here that are virtually friction free. Hardly any heat is lost because the DMF …” „… between the flange and the pendulum to minimize wear and friction [4]. This wide range of applications …”

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

„… transmission housing, see fig. 4) and fitted with friction-optimised grooved ball bearings. This minimizes …” „… synchronous machine, a friction-optimised single-speed transmission and a highly compact power inverter …” „… friction-optimised single-speed transmission and attached power inverter. The MEB for electrified powertrains …”

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

„… efficiency of the new CVT was improved by adopting JATCO’s latest low-friction belt. Fig. 9 …” „… : Cross-sectional view of variator structure 4-3 Efforts to reduce mechanical losses Low-friction ball …” „… company’s JF015E unit that is currently being used on many mini-vehicles. Specifically, friction is reduced …”

A. Viehmann, J.-E. Schleiffer, S. Rinderknecht Evaluation of the dedicated range-extender transmission powertrain concept DE-REX regarding efficiency, costs and complexity – Comparative assessment of electric and hybrid powertrain configurations b... S. I-21-I-48

„… encountered by applying powershift elements like friction clutches (e.g. dual clutches) which in term are …” „… costly and burdened with a high application effort (e.g. lifetime adaption of the friction element …” „… by installing two EMs with half power instead of one powerful EM. Instead of using friction clutches …”

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

„… , speed-dependent losses, such as friction losses on bearings and seals or the ventilation losses of the rotating …” „… a result of internal friction in open switching elements (cf. source [Alt15], [Gas17]). Whether the …” „… limitation of friction energy penetration (heat input) into the clutches, which represents the durability …”

M. Horn, F. Kutter, B. Vahlensieck Advanced development of dedicated hybrid concepts – Systematic search for optimal powertrain concepts S. I-1-I-20

„… functions. Pure dedicated hybrid concepts try to fulfill individual requirement sets without friction shift …” „… ) without friction elements comfortable ICE start under all conditions and circumstances only concepts …” „… compared to dedicated hybrid concepts with no friction shift elements and two electric machines …”

C. Schmahl, M. Höck, D. Ressin, M. Kesseler GKN’s ActiveConnect AWD system as an energy-efficient solution for electrified vehicles S. I-555-I-566

„… mechanical hang-on AWD system clearly shows that even on roads with low friction values (e.g. on snow), the …” „… friction value, the operating period of the AWD system can even fall below 1 %. Based on these …”

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

„… synchronizers with carbon friction lining – A comparison of load limits and deterioration behavior …”

C. Leonhardt, M. Otto, K. Stahl Potential of lightweight construction and component properties of joined spur gears S. I-179-I-196

„… transmitted by friction, an adequate interference fit pressure is needed. This leads to conflicting …” „… friction type press-fit. The fourth concept in contrast is based on a combined form fit/press fit …” „… incremental encoder an the test gear, except the torque resulting from the friction in the bearings, which is …”

M. Jörgensson, C. Wolrath, J. Hallnéus Volvo Cars modular electric axle drive S. I-531-I-540

„… friction or surface. The solution also enables the possibility to vector the torque and speed between the …”

T. Basbous, J. Mortal Electric driveline adaptation from passenger-car application to Light & Medium Truck application – A competitive, efficient, compact and light solution S. III-19-III-28

„… : Truck characteristics used for this study The total losses (L) due to friction and aerodynamics, that …”

K. Baron, C. Rübsam, M. Werra, F. Küçükay Hybridized manual transmission – Opportunities and challenges of mild hybridization S. I-49-I-66

„… maneuver the friction brakes are only active when the EM braking capacity is not sufficient to obtain the …” „… and friction caused by the hybrid system components predominates the limited opportunity to …”

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

„… low-pressure optimized motor pump reduces losses in the transmission by reduced friction in the gears and …”

Y. Le Neindre Great Wall Motors’ 2nd generation of Pi4 platform – A high performance PHEV for premium SUV in China S. II-99-II-110

„… architecture (ex P2 Hybrids) offers significant advantages. By offering low mechanical friction, higher …”

G. Hellenbroich Low-cost DCT for emerging markets incl. 48 V hybridization S. I-67-I-78

„… friction losses. The neutral function also provides functional safety benefits, as the electric motor can …”

A. Lampe, R. Serway, L. Große Siestrup, C. Gühmann Artificial intelligence in transmission control – Clutch engagement with reinforcement learning S. I-113-I-132

„… such as the start-up controller for automatic transmissions with friction clutch as start-up element …” „… additional friction loss constraints which must be taken into account when defining the control targets. As a …”

A. Grunwald Transmission system footprint related to fatigue, efficiency and NVH S. I-367-I-384

„… mesh orders. The high speed with low friction requires several specific optimization loops to achieve …”

M. Bahne, A. Wiesebrock Flexible oil management for dual-clutch transmissions S. I-447-I-454

„… converter that does not have to handle frictional power. However, thanks to the flexible oil management and …”

doi.org/10.51202/9783181023549

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Reifen – Fahrwerk – Fahrbahn

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2438 2024

Results in this title

J. King Information Fusion for Road Friction Estimation S. 147-148

doi.org/10.51202/9783181024386

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

Hans Peter Lenz (ed.)

Series: Verkehrstechnik/Fahrzeugtechnik

Volume 799 2016

Results in this title

R. Aufischer, G. Hager, M. Offenbecher Reibleistungsreduktion im Kurbeltrieb von LKW-Motoren aus der Sicht eines Gleitlager-Herstellers /Friction Reduction in Truck Engine Crank Trains from the View of a Bearing Manufacturer S. II-355-II-369

„… Reibungsverlust (Design ist 100%) Mixed Friction Hydrodynamic Mischre bung Hydrodynamik 0 5 10 15 20 25 30 35 40 …” „… % design +10% -10% design +10% Lagerdurchmesser Relativer Reibungsverlust (Design ist 100%) Mixed Friction …” „… : Seoul 2000 FISITA World Automotive Congress, F2000A165:” Friction Reduction – the Engine’s Mechanical …”

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

„… performance, friction reduction technologies, a coolant flow control valve and emission reduction …” „… by about 7% compared with VQ37VHR by employing downsizing, friction reduction, optimized valve …” „… (BSFC) 37. Internationales Wiener Motorensymposium 2016 - 348 - 5.2. Friction reduction technologies …”

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

„… . Key technologies are knock suppression and friction reduction. Kappa 1.6 GDI engine achieves the …” „… applied. Friction is minimized by the oil control valve (OCV) integrated continuous variable valve …” „… temperature for head and block. To reduce piston friction loss, the block is controlled at higher coolant …”

I. Hirose Mazda 2.5L SKYACTIV-G Motor mit neuer Aufladetechnik/Mazda 2.5L SKYACTIV-G Engine with New Boosting Technology S. II-304-II-316

„… whose compression ratio is compromised to reduce mechanical friction and pumping loss. [1] According …” „… friction. In addition to this, further reduction in mechanical friction can be obtained by reducing the …” „… resolving these issues, while maintaining its advantages of reduced mechanical friction and pumping losses …”

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 fundamental change in the friction mechanism present in the system. Multiple rolling elements …” „… replace a thin oil film under high-shear conditions, significantly reducing system friction. This results …” „… in a significant reduction of system friction at all operating temperatures and even greater …”

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

„… springs. In addition, oil pump with new rotor profile, narrow connecting rod bearings, low friction …” „… resin coated piston skirt, low friction chain with reduced sliding area were adopted. As a result of …”

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

„… with low friction as a major decision factor and the ability to be operated under “stop – start …” „… variable vane type pumps, the pendulum pump eliminates the high friction contact between vane and slider …”

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

„… that will benefit motorists. New generations of detergent additives, friction modifiers, ignition …” „… allow fast and efficient burning and maximum performance. Reduce friction between piston and cylinder …” „… friction between piston and cylinder wall. More energy is available for the powertrain. TODAY1930’s FLAME …”

T. Heiduk, U. Weiß, A. Fröhlich, J. Helbig, S. Zülch, S. Lorenz Der neue V8-TDI von Audi/The New Audi V8-TDI Engine S. II-160-II-192

„… low friction. The V8 TDI’s exhaust gas cleaning system is a combination of a NOx oxidation catalyst …”

H. Müller, P. Gutruf, M. Martin Brennstoffzellen Range-Extender als weiterer Lösungsansatz für große Reichweiten im emissionsfreien Fahrbetrieb /Another Future Solution for Long Driving Range at Zero Emission – Fuel Cell Range Exten... S. I-277-II-X

„… Kurbeltrieb von LKW-Motoren aus der Sicht eines Gleitlager-Herstellers Friction Reduction in Truck Engine …”

doi.org/10.51202/9783186799128

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LAND.TECHNIK AgEng 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2427 2023

Results in this title

F. M. Appich, P. M. Roth, S. Böttinger, A. Bürger, A. Diekamp Frictional characteristics of wheat straw under varying contact pressure S. 161-168

„… , and extensive tests on straw friction coefficients have been conducted. Previous tests conducted with …” „… paint was applied to the lower friction specimen, while a contrast agent was added to the upper specimen …” „… upper friction specimen. The study investigates the coefficients of friction of straw in relation to …”

C. A. Arévalo-Montaña, S. Böttinger Tractive effort prediction based on dynamic soil parameters S. 235-246

„… sinkage modulus influenced by soil friction angle [9; 11]. VDI-Berichte Nr. 2427, 2023236 Fig. 1 …” „… intern friction (right) [6]. 𝑝 𝑘 𝑏⁄ 𝑘 ∙ 𝑧 (1) 3.1.1 Pressure Sinkage device The pressure-sinkage …” „… ) and then fitted to a linear model, the angle of internal friction (ϕ) and soil cohesion (c) can be …”

S. Becka CFD/DEM coupling for the optimization of air conveyor sections of pneumatic seed drills S. 413-416

„… . In this way, conclusions can be drawn about the friction coefficients between seed and tube or hose …” „… friction values determined on the basis of the test rig are finally input variables for the coupled …”

C. Schaub, R. Schütte Performance optimization of CVT standard tractors in front loading application S. 21-28

„… gearbox output. The resulting force at the wheel can exceed the static friction limitation between tire …” „… within the range of static friction. When the operator releases the drive pedal, the torque limitation is …”

B. Marx, A. S. Herrmann Quo Vadis bale twine? S. 483-488

„… joining technique using PP or PET strapping bands. The joint efficiencies achieved by friction welding are …” „… friction welding. Laboratory-scale experiments with a magnetic bicomponent fiber based on …”

S. Stesny, S. Adam, O. Turkes, L. Wolf AEF – Agricultural Interoperability Network S. 389-394

„… three use cases to address some of the most common areas of friction in the industry while reusing …”

K. Krombholz Technological and energetic aspects of a transverse pull S. 87-92

„… ground. This forces transmission is a combination of friction and gearing, which requires correspondingly …”

F. Gerdes, L. Frerichs, A. Eitzlmayr, E. Karer, A. Feyrer, M. Hofer, D. Weberndorfer A comparison between conventional calibration experiments and the Excavator Test for DEM soil calibration S. 79-86

„… intended application. For cohesionless soil, simple repulsive contact models with friction can be used …”

A. Tamrakar, M. Roberge Grain Handling Simulations in Combine Harvester – Simulation Development, Validation and Optimization S. 395-402

„… simulations, additionally, also depend on various contact parameters like stiffness, damping, and friction …”

K. Kivekäs, A. Lajunen R. Stirnimann#S. Gfeller High-fidelity simulation modelling of agricultural mobile robots S. 255-262

„… differential variational inequality-based approach for handling friction and contact in …”

C. Korn, T. Herlitzius, K. Lüpping, A. Afting Study on the use of DEM for the optimization of pelleting rollers S. 403-412

„… , specific 1D and 2D numerical approach for pelleting, encountering friction and material compression, is …”

Titelei/Inhaltsverzeichnis S. I-XX

„… . Devos, B. Missotten, CNH Industrial, Zedelgem, BelgiumFrictional characteristics of wheat straw under …”

doi.org/10.51202/9783181024270

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Ventiltrieb und Zylinderkopf 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2353 2019

Results in this title

M. Breuer, D. Furtado, K. Grimm, S. Moormann, S. Schmitt, M. Seibel Frictional Performance of the fully variable Valve Train UpValve S. 45-62

„… friction coefficients are introduced, taking into account the oil availability and entrainment. The …” „… simulation work explains the contribution of each contact to the overall friction and supports the valve …” „… function only cause a small increase of the overall friction at identical full valve lift. When …”

R. D. Stone Camcon Intelligent Valve Technology – a Powerful Tool for Combustion Development S. 89-104

„… quality improvements arise from the fact that friction levels are undisturbed by rebuilds, a-b-a-b testing …”

N. Zsiga, A. Omanovic, P. Soltic, W. Schneider Wirkungsgradvorteile beim Ottomotor unter Verwendung einer nockenwellenlosen, vollvariablen Ventilsteuerung gegenüber gedrosseltem Betrieb – Funktionsweise und Potenziale eines neuartigen elektrohydra... S. 105-134

„… , M., “Effect of cylinder pressure on engine valve-train friction under motored and fired conditions …”

Titelei/Inhaltsverzeichnis S. I-VI

„… Technologies AG & Co. KG, Herzogenaurach Frictional Performance of the fully variable Valve Train UpValve …”

doi.org/10.51202/9783181023532

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Detection of temperature in frictional contact by means of component-inherent sensors for enhanced wear prediction

Selina Raumel

Series: Berichte aus dem IMPT

Volume 02/2024 2024

doi.org/10.51202/9783959009461

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Gleit- und Wälzlagerungen 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2308 2017

Results in this title

S. Arai Contribution of Frictional Behavior Control in Ball Screw S. 161-172

„… in the torque of the ball screw and bearings, and also a change in friction generated by the covers …” „… enclosing the guideways and the feed drive system. A change in torque and friction tends to cause motion …” „… characteristics are essential factors for controlling the change in friction caused by a ball screw. The …”

F. König, G. Jacobs, G. Burghardt Einlaufverhalten von Gleitlagern im Start-Stopp-Betrieb S. 53-62

„… behaviour by parameters like lubricant film thickness and friction power. The outcome of the investigation …” „… shaft (inner film). The sleeve itself is driven by the fluid friction of both inner and outer …” „… friction the calculation model according to DIN 31652-1 [1] is used. This method is chosen because …”

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

„… friction and slip conditions may be facilitators for hydrogen uptake [4], [5]. However, it needs to be …” „… od elling friction The numerical model should be capable of simulating the cage and the roller slip …” „… . Therefore, the friction in the tribo-contacts and a circulating oil should be modeled with high accuracy …”

M. Ooms, K. Krieckemans, M. Goovaerts Plain bearings for wind turbine gearboxes – An update on experience S. 63-72

„… friction and wear for maximum lifetime are key requirements for bearings designed for automotive engine …” „… show that running-in leads to reduced friction losses with increasing number of cycles. In an …” „… caused by running-in on starting friction is studied. The simulation results suggest that the reduction …”

P. Sauvage, G. Jacobs, B. Lüneburg Calculation model for evaluation of slippage in large diameter bearings – A combined analytical-numerical evaluation of the post-hardening risk due to slippage in large diameter bearing S. 219-230

„… friction was developed in [11]. Friction was included in this characteristic value in [12] and a limit for …” „… the action of the rollers on the outer ring raceway and the friction value between the two contact …” „… friction value ? ? in the acceleration zone is assumed to be constant. The contact energy density is the …”

T. Kiekbusch, J. Liebrecht, B. Sauer Dynamiksimulation von Wälzlagern unter Berücksichtigung der Plansch- und Schleppverluste S. 207-218

„… gegenübergestellt. 2 Abstract Losses and friction conditions significantly influence the internal behaviour of …” „… rolling bearings, such as the friction torque, the bearing temperature and the slip conditions (cage and …” „… .; Marquart, M.; Sauer, B.: Experimental and Simulative Studies of Friction Torque in Roller Bearings with …”

T. Jurkschat, M. Otto, T. Lohner, K. Stahl Bestimmung des Verlustverhaltens und der Wärmebilanz von Wälzlagern S. 197-206

„… FVA/FVV-Vorhabens Low Friction Powertrain VDI-Berichte Nr. 2308, 2017 199 („LFP“) [9] verschiedene …” „… , Low Friction, LAGER2. Erweiterung der Berechnung der Wälzlagerreibung in FVA-Software …” „… , high operational reliability and economic viability depends on durability, as well as on the frictional …”

J. Loos, W. Kruhöffer, D. Merk, J. Kerstiens, M. Smolenski Berechnungsansätze für die WEC-Neigung unter reibenergetischer Wälzbeanspruchung S. 231-244

„… Friction: Influences and „Friction Energy Accumulation“ as Indicator, Tribology Transaction 2016 …”

B. Vierneusel Schnelles Berechnungsverfahren zur Vermeidung oberflächeninduzierter Schäden in Wälzlagern S. 19-30

„… tribological contact and the occurrence of surface initiated damage. The employed mixed friction model uses …” „… method makes use of the frequently observed relationship between frictional loading inside the …”

A. Buchroithner, C. Voglhuber Untersuchung eines verlustarmen Low-Cost Lagerkonzepts für Schwungradspeicher – Eine Schlüsseltechnologie für die Speicherung erneuerbarer Energie S. 299-314

„… Storage for Renew able Energies - T esting of a low -cost, low -friction bearing configuration …”

Titelei/Inhaltsverzeichnis S. I-XI

„… . Arai Contribution of Frictional Behavior Control in Ball Screw 161 E. Abele, Experimentelle …”

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Dritev 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2420 2023

Results in this title

T. Schneider, K. Völkel, K. Stahl Failure Characteristics of Wet-Clutches in Limited Slip Differentials S. 307-324

„… Friction System 3.p = 6.0 N/mm2, n = 100 min-1, N = 4, oil = 80°C, voil = 0.25 mm3/mm2/sFrictioninterface1 …” „… , three different friction plates (paper friction plate, composite carbon friction plate, woven carbon …” „… friction plate) are investigated concerning damage behavior. The investigations show that with Friction …”

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

„… versions, the oil is shared with the transmission. VDI-Berichte Nr. 2420, 2023236The friction system …” „… consists of friction discs with intermediate discs made of steel. Depending on the application, the …” „… friction material is either sintered bronze, or organic. For the sintered bronze version, the oil is …”

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

„… that transmit a torque proportional to the frictional force. The friction clutch has the advantage of …” „… vehicles are more expensive and heavier than 2WD vehicles and do not require AWD, high grip and friction …” „… ELEMENTS There are 3type clutch systems generally that disconnect power can be classified as a friction …”

S. Kaimer Vehicle Motion Control by Advanced Wheel Torque Management S. 13-20

„… represents the friction utilization that may not be exceeded to maintain driving stability. VDI-Berichte Nr …” „… friction value. In this example, the circle has a constant size during driving, because the friction value …” „… remains constant on the track. With a reduced friction value, the circle would be smaller. This …”

H. Sandquist, E. Barrientos, S. Klacar Systemized Modular Approach for Electric Drive Unit Family Development S. 89-106

„… friction bearings and low viscosity oil to minimize losses5.3. 800V EDUsThe 800V EDU is for 2 or 4-wheel …” „… high current SiC power-modules Low friction bearings and low viscosity oil to minimize losses Bi-stable …” „… high current SiC power-modules Low friction bearings and low viscosity oil to minimize …”

J. Jennings, D. Finn, T. Hunter Novel Multi-Functional Clutch Technology for EV Drivetrain Disconnects – Next Generation Disconnect with One-Way-Clutch for Automatic, and Non-Blocked Shifting S. 325-338

„… ), transmission (transaxle), power-takeoff unit (PTU), and a rear-drive-unit (RDU) containing a friction-based AWD …” „… possibility of blocked shifts. There are no friction elements in the system, and it has a bi-stable magnetic …” „… friction elements and the magnetic latching for on/off states doesn’t require any power consumption to …”

C. Reumüller, M. Sedlmair, M. Hein, A. Damm Transformation from conventional to electric powertrains Challenges in testing mechatronic shifting systems S. 359-376

„… form-fit clutches are preferable in comparison to friction-based clutches. One type of form-fit clutches …” „… multi-plate friction systems (MPFS) are typical shift elements in the drivetrain of ICE and Hybrid electric …” „… smart control of the shifting actuator. In this case, classical synchronizers (Fig. 2) with friction …”

S. Yan, P. Piecha, N. Hetzel Virtual Generation of Load Profiles and Spectra for Designing Electrified Vehicles – The influence of software and driving scenarios on powertrain design S. 377-390

„… ) calculates a force based on the slip factor and takes non-linearities at the friction limit into account [3 …” „… . A serial recu-peration strategy is applied here. The friction brakes on both axles are only used …”

Z. Liu, S. Rinderknecht A sequential adaptive sampling strategy for surrogate model construction of transmission losses S. 425-440

„… load-dependent and no-load losses. Load-de-pendent losses are caused by the friction between gear meshing teeth …” „… between their conical friction surfaces is sheared, which is defined as no-load hydrodynamic losses …”

J. Gindele, F. Faistauer The Future of BEV: High Performance Without Compromising Driving Efficiency S. 37-44

„… powerful and large displacement spark ignition engines run with higher throttle and friction losses at …”

C. Gürlich, S. Demmerer, M. Winkel, K. Führer Transmission – the most underestimated part of the electric drive – Next generation transmission S. 183-196

„… single-stage design reduces friction losses by 50% at 100km/h [6] One of the most exciting developments in …”

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

„… temperature up to 30°C. As a result, the main advantage is a lower friction of a cage guided bearing in …”

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

„… requires no frictionally engaged clutches in the torque path. This applies both to the C0 and to the one or …”

N. Missal, S. Schwertel Innovative cold metal forming processes for a sustainable future – Moving forward with helical gear drive components in a resourceand energy-efficient way S. 295-306

„… metal forming processes regarding high contact stresses and significant sur-face enlargement. Frictional …” „… , when the die is released from the de-formation zone, only the frictional force with the negative …”

doi.org/10.51202/9783181024201

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Zylinderlaufbahn, Kolben, Pleuel

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2282 2016

Results in this title

F. Schlerege, N. Hagen, U. Morawitz Evaluation of a Rolling Bearing Crankshaft S. 145-158

„… at numerous stop-start conditions because of their lower friction. The load out of the timing- and …” „… accessory-drive at low speed is dominating the friction power loss of the crankshaft in the driving cycles. In …” „… conditions, high load at low speed, rolling bearings have the potential to minimize the friction loss and …”

D. López, R. Hügel, E. Nocera, J. Araujo, L. Nascimento Innovative Carbon Coating concepts for Piston Rings S. 105-116

„… mechanical losses are mandatory, thus a strong requirement to reduce the friction contribution in the Power …” „… viscosity oils by OEMs as a main path to achieve friction reduction might impact severely the boundary …” „… the introduction of low oil viscosities for friction reduction while keeping the functional aspects …”

J. Schumacher, E. Werninghaus, U. Morawitz Untersuchung tribologischer Maßnahmen am Kolbensystem zur Senkung des Kraftstoffverbrauchs eines Ottomotors S. 175-186

„… particular includes the improvement of the mechanical efficiency. The reduction of the friction at the piston …” „… cooperation with Ford-Werke GmbH, friction and fuel consumption have been measured on an award winning …” „… modern three cylinder 1.0 l gasoline engine. In connection with the efforts to reduce friction losses …”

M. Blümm, T. Fuhrmann, A. Baberg, F. Dörnenburg Innovative Kolbenschaft- und Bolzenbeschichtungen für Otto- und Dieselmotoren S. 187-198

„… Trockenschmierstoffbeschichtungen, die sogenannten Grafitschichten oder Anti Friction Coatings abgelöst. Die herkömmlichen …” „… niedrigviskosere Öle zum Einsatz gebracht. Weiterhin wird über „friction modifyer“ versucht die Reibungssituation …” „… Friction and Noise Study of Three Different Piston Architectures for an Automotive Gasoline Engine, SAE …”

V. Lagemann, T. Eder, T. Behr CO2-Reduktion durch innovative Kolben aus Stahl für Diesel-PKW S. 75-92

„… and therefore leads to 40 to 50 percent lower friction losses. Using virtual engine tests this effect …” „… liner alone causes between 40 and 50 percent of the mechanical friction losses in the engine, the …” „… ] Kreso, A.; Behr, T.; Maier, S.; Hartweg, M.; Lagemann, V.; Nowotni, D.; Rubi, J.: Friction Optimization …”

P. Ernst, P. Luethy, Ch. Bohnheio, J. Ramm, F. Seibert, B. Widrig Optimierung von Reibung und Verschleiß im Kontakt der Zylinderlauffläche mit dem Kolbenring S. 199-218

„… ] “Global energy consumption due to friction in passenger cars”, Tribology International 47 (2012), 221-234 …” „… application to achieve friction reduction and cost benefits”, Engine Expo Stuttgart, 2010 [5] Ring F …” „… “Low Friction Powertrain”, 2012 200 U/min 25g/min 400 U/min 50g/min600 U/min 75g/min 800 …”

C. Hirner, A. Merkle, A. Tippmann Grundsatzuntersuchungen zum Einsatz von aerostatischen/aerodynamischen Lagerungen („Luftlagern“) im Verbrennungsmotor S. 33-46

„… engineering sector, e.g. in tooling machines. Significant reduction of friction and the use of air as an …”

doi.org/10.51202/9783181022825

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AgEng LAND.TECHNIK 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2406 2022

Results in this title

P. M. Roth, F. M. Appich, S. Böttinger Interaction properties of wheat straw and grain for Discrete Element Method S. 549-554

„… separation in combine harvesters or the mass flow in ball mills. In this study static friction coefficients …” „… coefficient of static fric-tion has been investigated using the inclined plane test setup. The wheat straw has …” „… . The coefficient of static friction has been investigated as a function of contact pressure. To …”

S. Kubinski, T. Meinel Methodology for the development of a plant detection system based on mechanical properties of crops using the example of corn – Contribution to the cost-effective enabling of plant-individual care mea... S. 135-140

„… x axis, the bending upwards is not considered. The twisting of the beam due to friction between the …” „… area the plant glides under the bending beam and causes resistance through friction on the bottom side …” „… properties to consider. Limiting factors of the pivoted system are the mass inertia and the friction during …”

L. Brinkschulte, S. Antoni The best of two worlds: Spray boom control with hydropneumatic suspension technology S. 291-298

„… the cylinders and joints. But for a good suspension performance, the friction of the cylinders and …” „… joints must be as low as possible. Additional and adjustable damping based on hydrodynamic friction can …” „… in [4]. The damping of the system results first of all from the system itself: frictional effects of …”

E. Michielan, M. Mattetti Combine harvester – Outlining the combine harvester usage through CANBUS data analysis S. 41-46

„… is denoted as ? in the following.  Nominal Friction-Percent Torque: that reports the frictional and …”

S.-W. Lee, I.-H. Seo Evaluation of particulate matter concentrations by crop cultivation in reclaimed land – Reduction of particulate matter by crop cultivation S. 533-540

„… surface of the crop, which can significantly reduce the friction velocity beneath the surface. Through …”

L. Poppa, L. Frerichs, J. Liu, M. Böl Experimental method to analyse the blackspot bruises of potato tuber flesh due to mechanical deformation S. 429-438

„… friction and internal damage caused by impacts [3]. Small impacts can result in bruising called blackspot …”

doi.org/10.51202/9783181024065

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Konstruktion

Browse Volumes: Konstruktion

Konstruktion Volume 68 (2016) Issue 06 ISSN Online: 0720-5953

Results in this title

Daniel Burtsche Dünne Folie sorgt für starke Leistung S. 40-41

„… Scheibe: „Friction Shim“. Das Produkt ist in der Regel gerade einmal einen Zehntel Millimeter dick …” „… in der Automobilindustrie Hauptanwendungsgebiet der Friction Shims ist bisher die …” „… Reibungskoeffizienten. Denn dieser ist die entscheidende Variable, die sich auf einfache Weise mithilfe der Friction …”

doi.org/10.37544/0720-5953-2016-06

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DRITEV – Drivetrain for Vehicles 2021

VDI-Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2381 2021

Results in this title

T. Skubacz, C. Burkhardt, S. Krischke Shift Elements for Electric and Hybrid Drivetrains – Shift elements with low drag losses, high actuation energy efficiency and integrated overload protection S. 487-498

„… in addition to high energy efficiency for holding and changing the state and low drag and friction …” „… . The use of friction elements instead of positive engagement connections also enables shifting under …” „… ecoClutch DS Structure In the closed state, a friction clutch transmits the torque between the two shafts …”

M. Häßler, O. Werner The Pendulum Rocker Damper – Providing flexible damper characteristics for hybrid powertrains S. 329-346

„… stages, friction control units or centrifugal pendulum absorbers, each in their different design …” „… damper can be operated with the lowest possible friction on the drive side (Fig. 4a), while the coast …” „… side can be equipped with relatively high friction to improve the start process without any further …”

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

„… friction clutch is transferring the torque on the second gear and is combined with a one way clutch on the …” „… driving, as the component would free wheel during this operation. The friction clutch is operating in …” „… following table 2: Table 2: Operating States In first gear, the friction clutch is open, the one way …”

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

„… aim of improving energy efficiency and reducing CO2 emissions, friction losses within driveline …” „… friction losses. The investigation is carried out using finite element simulations. Important influencing …” „… such as gear assemblies increases steadily. Friction effects in planetary gear sets from ZF’s 8 …”

H. Wittig, J. Engasser, A. Glavinic AEROFLEX – Distributed Hybrid Drivetrain for Long Haul Freight Vehicles S. 593-608

„… request between the friction brakes and the electric drive. The service brake request is distributed with …” „… friction brakes. Therefore, it communicates with the dolly EBS via an additional ISO 11992 CAN connection …” „… request between friction brakes and endurance brakes. Thus, also a brake request from the brake pedal can …”

A. Nees Flexible Electro-hydraulic Actuation System for Multi-speed Electrified Drivetrains – Requirements and Concept S. 275-290

„… layshaft designs the typical DCT-like architecture is used, including friction clutches and synchronizers …” „… gear set control As a common ground, the study concludes that most concepts use friction elements to …” „… earlier. The planetary gear set is controlled by two friction clutches (or brakes) to realize two speeds …”

F. Langhammer, A. Kappes, A. Viehmann, S. Rinderknecht Novel “Two-Drive-Transmission for Long-Range” Powertrain: Ecology and Efficiency meet Driving Comfort S. 207-228

„… or friction clutches. Dog clutches produce less drag torque, need less actuation force when compared …” „… , the usage of dog clutches to connect the ICE reduces weight in comparison to friction clutches …” „… , eliminating the need for power-transmitting friction elements such as synchronizer rings, a dual clutch, or …”

F. Müller-Deile Advanced design of electric machines for trailers with electric axles S. 653-668

„… truck EBS. The other endurance brakes of the truck and the friction brakes are only activated if the …” „… vehicle or the friction brake system can then produce the desired deceleration. The outcome of the …” „… . The retarder and friction brakes are not used in this scenario.With a smaller e-Drive system (300 kW …”

B. Krüger, G. Filomeno, D. Dennin, P. Tenberge Holistic Design of All-Wheel Drive Electric Powertrains Using a Multi-Objective Optimization Algorithm S. 377-394

„… as a fixed speed ratio. Both loss types are modelled as friction torques imprinted on the input …” „… . Assuming the friction coefficient to be constant, the maximum traction force ? , is calculated using the …” „… friction law. ? , ? ? (5.2) Here, ? represents the dynamic axle load and ? the tire friction …”

T. Kaufhold, F. Schneider, O. Groneberg, A. Moser Modular Starting and Damping System integrated in 48V Hybrid Architectures – Efficient Starting System for Hybrid Vehicle Architectures S. 347-360

„… roller mass below a certain level is not recommended, since the impact of friction and contamination …” „… which results in minor drag torque of the dry friction bushing. After engine start, the ring-gear and …”

J. Nowack, G. Hellenbroich, A. Ghosh, V. Shapovalov, R. Fleuren Park by Wire System for current Electric Drive Units S. 291-302

„… or line contacts. High contact stresses can lead to friction instabilities and high wear, eventually …”

S. Kaimer Power to the Wheels – Challenges and Benefits of Electrified AWD for EVs and Hybrid vehicles S. 117-124

„… were primarily used to improve traction, for example off-road or in poor friction conditions such as …”

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

„… many evolutionary (small) efficiency measures to cut down the friction losses – like in bearings …”

M. Hein, J. Pellkofer, K. Michaelis, T. Tobie, K. Stahl, D. Kadach Test method A/16,6/90 with injection lubrication for discriminating different lubricants for dual-clutch transmissions S. 437-452

„… frictional behavior for different components of the gearbox. High coefficients of friction are required …” „… for synchronizers and clutches, low coefficients of friction are favorable for bearings and gears in …” „… clutch transmissions must meet different requirements regarding the frictional behavior for different …”

G. Herbillon Performances Validation of an electrically-commanded dog clutch system for multi-speed and disconnectable eDrives S. 255-274

„… areas, - Fast & smooth: low torque interruption, and low noise, - Durable: no friction energy …” „… . - Efficient and durable since no friction energy dissipated during the speed synchronization as the kinetic …” „… force delivered. EFFICIENCY Kinetic energy converted into friction (within friction cones) – ref …”

P. Barve Gear Design Challenges of 2-speed-AMT High Torque E-Drives S. 499-516

„… inexpensive compared with friction clutches. The 2-Speed AMT gearbox is suitable for SUVs, sports cars …”

A. Ramsauer, A. Pujari Frontloading for (Hybrid-) Transmission Integration at BMW S. 101-116

„… alternating frictions. All basic maneuvers can already be driven freely and automatically on the test bench …”

S. Idler, C. Bünder Scaling the functionality of a DCT-based DHD to segmentspecific requirements – The new high torque DHD Plus S. 241-254

„… ]. These include optimized bearings, low friction gear meshes with reduced specific sliding speeds and …”

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

„… high friction losses. In addition VDI-Berichte Nr. 2381, 2021640 to this the single wheel drive …”

G. Gao, D. Schöneberger, S. Rinderknecht Development of an innovative and modular test bench to analyse gear shifts in electrified powertrains S. 415-436

„… between two gears while shifting. In some electrified powertrain however, the friction elements are not …” „… conventional vehicle transmission, frictional synchronizers are used to synchronize the speed difference …” „… The test bench should be capable to test conventional units with frictional synchronization, for …”

M. Muether, B. Heuser, L. Virnich, A. Guedden, T. Luediger, D. van der Put Development trends towards CO2-neutral powertrains for HD applications S. 529-550

„… losses and reducing engine friction improves efficiency by ~1.0 %points. In the second phase an updated …”

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

„… a high friction surface like asphalt. The resulting torque peaks can damage the mechanical drive …”

A. Drechsel, J. Pellkofer, K. Stahl, J. Sandor, M. Hein Development of a new test method to investigate the wear behaviour of hypoid gear oils S. 453-468

„… gears have shown that the damage and friction behaviour, in addition to the surface roughness, is …”

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

„… frictional losses from the transmission, bearings and sealings, and power electronics losses are required …”

doi.org/10.51202/9783181023815

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Gleit- und Wälzlagerungen 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2348 2019

Results in this title

S. Bill Higher efficiency and lifetime improvement for bearings S. 325-328

„… run better with reduced friction, temperature, surface roughness and great reliability and durability …” „… silicate formulation, the products can also be used preventively. Because due to reduced friction and the …” „… examine the friction and wear behavior of materials and coatings and the lubricant properties in loads by …”

T. Amann, A. Kailer, W. Chen, J. Rühe Entwicklung von galvanisch gekoppelten Gleitlagern mit niedrigen Reibungs- und Verschleißwerten – Verwendung von komplexen Fluiden als Schmierstoff und als Additiv in Wasser zur tribologischen Optimie... S. 33-44

„… Verschleißreduktion um 40 % im Vergleich zu einem Referenzöl. Abstract Friction and wear cause total global …” „… benefits of ultra-low friction, wear-free sliding and friction control, and water-based lubrication in …” „… improved friction and wear in model friction tests. Plain bearing tests with the mesogenic lubricant show …”

P. Rödel Schlupfberechnung innerhalb von Sekunden – Schnelle und einfache Simulation der Dynamik bei stationären Betriebsbedingungen S. 149-158

„… bearings, elastic deformation and friction in the contacts as well as the inertia of all bearing …” „… and, consequently, slippage and characteristic values for friction related damage. This method uses a …” „… with the physically based friction model of BEAR- INX, commonly known characteristic damage values …”

V. Hoffmann, D. Bartel, C. Stelzer Auslegung eines hochbelasteten Radialgleitlagers mit Hilfe einer Multi-Parameter-Optimierung S. 129-140

„… high load is presented. Elastic deformations, lubricant heating due to friction as well as possible …” „… solid contact pressures resulting from mixed friction play a major role for this kind of journal …” „… according to friction losses, maximum lubricant temperature as well as maximum hydrodynamic pressure …”

D. Kürten, A. Kailer, I. Khader Hydrogen assisted rolling contact fatigue S. 273-286

„… friction µ = 0.11 was assumed based on the average frictional coefficient determined in a series of …” „… constant normal load of FN = 25, 50, 75 or 100 [N]. Coulomb friction with a constant coefficient of …” „… Ball-on-disk experiments: Fig. 1a shows the correlation between the coefficient of friction (COF) and hydrogen …”

S. Wiesker, L. Rüth, B. Sauer Axialschub an nadelgelagerten Stützrollen – Experimentelle Grundlagenuntersuchungen S. 385-X

„… misalignments on the friction torque and axial force of yoke type track rollers, a test rig has been developed …” „… investigations and simulations on cam-roller-friction. In: Bargende M.; Reuss H.-.C.; Wiedemann J. (Hrsg) 18th …”

V. Hoffmann, D. Bartel 3D-CFD-Simulation eines Gleitlagers mit Versorgungsnut unter Berücksichtigung von Mischreibung – Werkstoff und Oberfläche machen den Unterschied S. 107-118

„… friction conditions resulting from the contact of shaft und bearing into consideration. Therefore the …” „… elasto-hydrodynamic coupling based on a flexibility matrix and the mixed friction model based on an integral solid …” „… friction. Journal of Engineering Tribology 226 (2012) 12, 1095-1108 [7] Guo, Z.; Hirano, T.; Kirk, R …”

K. Bobzin, M. Öte, T. Königstein, W. Wietheger Thermisches Spritzen zur Herstellung maßgeschneiderter Gleitlagerbeschichtungen für hochbelastete Lagerstellen S. 45-54

„… , W.:Kapitel: „Thermal Spray Coatings” in ASM Handbook, Volume 18: Friction, Lubrication, and Wear Technology …” „… , Friction, Wear and Surface Engineering”, Lubrication, (Hoboken, USA, 2011), S. 204-206 [5] Bobzin, K. Öte …”

J. Loos, T. Blass, J. Binderszewsky, W. Kruhöffer, D. Merk WEC-Bildung, einer von mehreren Wälzlager-Ermüdungsmechanismen S. 245-256

„… . WEC Formation in Rolling Bearings under Mixed Friction: Influences and „Friction Energy Accumulation …”

R. Rumpel, T. Stahl, M. Neumann Angular Roller Unit (ARU) – Innovatives Festlager mit hoher Tragzahl und niedriger Reibung S. 3-10

„… capacities and low friction in a very small mounting space. The ARU is based geometrically on a Tapered …”

M. Neu, A. Harder, E. Kirchner Sensorische Eigenschaften von Wälz- und Gleitlagerungen – Beherrschen von Unsicherheiten von und durch die Zusatzfunktion S. 183-192

„… compared to temperature and friction measurements of an EHL line contact. In: Tribology International 126 …”

C. Brecher, J. Falker, M. Fey Untersuchung des Betriebsverhaltens radial belasteter Hochgeschwindigkeitswälzlager S. 197-208

„… Distribution in Ball and Roller Bearings Loaded in Five Degrees of Freedom While Neglecting Friction—Part I …”

S. Wandel, F. Schwack, G. Pol Oszillierende Wälzlager in Windenergieanlagen – Abgrenzung der Schadensmechanismen S. 221-232

„… International, 43(8), 1279–1286. 8 Stammler, M., Schwack, F., Bader, N., Reuter, A., Poll, G. (2018) Friction …”

M. Schwarz, T. Meinerz, V. Aul Anforderungen und Validierung von Wälzlagern in der Antriebsstrangentwicklung S. 65-76

„… , Lemförde [2] A Study on the Frictional Torque and Temperature Behavior in Tapered Roller Bearings …”

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„… Meeting and Exhibition. Nashville, 2019. - Angenommen [8] GUPTA, P. K.: On the Frictional Instabilities …” „… Transactions. (1991), 1, S. 1–8. [10] GUPTA, P. K.: Frictional Instabilities in Ball Bearings. Tribology …”

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