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VDI Wissensforum GmbH (ed.)

Dritev 2022

Series: VDI-Berichte

Volume 2401 2022

Results in this title

K. Lee, M. Song, S. Lim Multi-body Dynamics of a Vehicle Axle System Based on a Time-varying Gear Mesh Model for Investigating Hypoid Gear Noise and Vibration S. 185-196

„… Multi-body Dynamics of a Vehicle Axle System Based on a Time-varying Gear Mesh Model for …” „… , wheel drive shafts, and rubber bush supports. The combined fully flexible Multi-Body Dynamics (FMBD) of …” „… mode of structural components incorporates a sophisticated hypoid gear contact considering time-varying …”

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

„… Synchronizers are key elements in modern Dual-Clutch (DCT) or Manual (MT) Transmissions. They enable the easy …” „… Absicherung der Funktionssicherheit von Schaltelementen dienen. Abstract Synchronizers and multi …” „… elements, for example to realize multi speed functionality, for connect / disconnect applications or as …”

A. Eßer, J. Mölleney, S. Rinderknecht Potentials to reduce the Energy Consumption of Electric Vehicles in Urban Traffic S. 133-152

„… multi-speed BEV concepts, the "Two-Drive Transmission" (TDT) has been developed at IMS (Institute for …” „… . Additionally, constant transmission losses are considered, that are higher for the multi-speed concepts, due to …” „… battery capacity and further, the multi-speed transmission could possibly enable a downsizing of the EM …”

T. Skubacz, C. Burkhardt, S. Krischke Proof of Concept: Bistable Shift Element S. 241-252

„… and parallel operating modes. The use of a classic shifting element, e.g. a multi-disc clutch, would …” „… driving conditions. VDI-Berichte Nr. 2401, 2022242 Fig. 1: a) Multi-mode hybrid drivetrain b) E-axle …” „… powertrain parts. The shifting elements either realise different load paths, e.g. transmission paths, or …”

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

„… high-revving traction engines and shiftable transmissions that enable downsizing of the electric motor. Such a …” „… increasing engine speed and despite the resulting need for a transmission. Further potential for saving …” „… automotive high-speed transmissions and present comparisons to reference drivelines. For this purpose …”

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

„… clutch supported ICE starts. In addition, multi-gear e-axle systems or mechanical torque vectoring units …” „… Local MLP: The simplest non-trivial AI model available is a Multi Layer Perceptron (MLP) [2]. We are …” „… . Fig. 1: Simple Multi Layer Perceptron (MLP) model (left) consisting of input layer, output layer and …”

doi.org/10.51202/9783181024010

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

I. Andrasec, B. Jeitler AVL’s future hybrid X mode – A modular transmission family concept S. I-211-I-228

„… AVL’s Future Hybrid X Mode A modular transmission family concept AVLs Future Hybrid X Mode …” „… Entwicklungserfahrung mit dem Future Hybrid 7 Mode und 8 Mode DHT (Dedicated Hybrid Transmission) erstellt. Darüber …” „… Hybrid 7 Mode and 8 Mode DHT (Dedicated Hybrid Transmission). In addition, further sophistication in …”

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

„… [6] The G-Series offers three different selectable drive modes for the transmission. The ECO Mode is …” „… launched in 2018 with new efficient 8-speed automatic transmissions in combination with one Gasoline and …” „… Aisin AW G-Series transmissions 8G30 and 8G45 in Opel vehicles. The transmissions, also used in Peugeot …”

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

„… applied in automatic transmissions today. Concerning acceleration performance, for example, multi …” „… , and vehicle is in parallel mode. Second, the transmission is downshifted from gear 5 to gear 3. The …” „… transmission Dr. Wei Guo, Shengrui Transmission Corporate Limited, Shandong, China; Mick Jordan, M.Sc …”

Titelei/Inhaltsverzeichnis S. I-I-I-X

„… – Integration of the dynamic behavior of all conventional-, electric-, and hybrid-transmission mode types in …” „… Friedrichshafen AG, Schweinfurt AVL’s future hybrid X mode – A modular transmission family concept …” „… , Bonn Main topics: Automatic and dual clutch transmissions Transmission topologies as part of …”

A. Viehmann, R. König, S. Rinderknecht Investigation of gear shifts in a parallel-series hybrid powertrain with dog clutches in a demonstrator vehicle (two-drive-transmission with range-extender, DE-REX) S. I-323-I-346

„… Demonstrator Vehicle (Two-Drive-Transmission with Range-Extender, DE-REX) Performing mode changes using …” „… motor. The electric motors are coupled to the drive shafts via a multi-speed transmission, which can …” „… funded project called Speed2E [3]. Based on the idea of multi-speed transmissions for pure electric …”

K. Bennewitz, A. Mann Powertrain electrification exemplified by the VW Golf S. II-135-II-168

„… combustion engine is combined with a high-torque electric motor and a multi-speed transmission each [4 …” „… propulsion. In boost mode, both drives provide torque in addition. The batteries are charged solely by …” „… 6-speed dual-clutch transmission which compactly incorporates a permanent-magnet synchronous …”

T. Smejkal, C. Wirth Innovative transmission topologies using the example of a P2-hybridtransmission for front-transverse applications S. I-147-I-162

„… creep functionality for reversing and parking. Modern transmissions reduce the drag losses of the …” „… , 2018 149 Fig 1: Characterization of MCT [2] Multi-clutch transmissions (MCT) use the same …” „… Automatic Transmission -AT- # Lo ad S hi ft E le m en ts # D og C lu tc he s 2 NDC 0 NLSE Multi Clutch …”

R. Buchberger, O. Grieshofer, K. Puchner, R. Sereinig System optimization of electric drives in terms of lightweight design, acoustics and efficiency by means of modern transmission simulation methods S. II-31-II-46

„… by means of modern transmission simulation methods Dipl.-Ing. Reinhard Buchberger, Dipl.-Ing. Dr …” „… transmission components is examined by means of a multi-body simulation model [4, 5, 6]. Of particular …” „… among the main conflicting engineering targets within developments of electric drive transmissions …”

M. Werra, A. Ringleb, C. Sieg, F. Küçükay Thermal behavior of 48 V hybrid systems S. I-529-II-VI

„… of lightweight design, acoustics and efficiency by means of modern transmission simulation …” „… as various operating modes. Loss maps define the efficiency behavior, calculated in advance by a …” „… separate transmission loss calculation. It is possible to integrate up to nine electric machines into the …”

J. van der Meer, G. Hangen, J. Uhlig The new plug-in hybrid module as an addition to the AUDI S tronic gearbox family – Design, layout and manufacture S. I-451-I-464

„… gearbox housing. The electric drive motor and clutch are operated within the automatic transmission fluid …” „… hybrid mode. Moreover, the size of the machine is such that for 60 s torque of M = 350 Nm there is no …” „… water cooling jacket of the stator, the automatic transmission fluid of the disengagement clutch in the …”

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 …” „… transmission’s level of efficiency any further. In addition, hybridization, sailing function, and electric …” „… driving make it necessary to have an actuation that is independent from the transmission’s input speed …”

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

„… for multi-speed gearboxes, which enables considerable improvements in performance, comfort and …” „… hybrid vehicles. GKN supports this goal with a broad portfolio of electric transmissions and axles, and …” „… advantage of designing the entire transmission as well as the sideshafts mechanically with significantly …”

doi.org/10.51202/9783181023280

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VDI Wissensforum GmbH (ed.)

Dritev 2023

Series: VDI-Berichte

Volume 2420 2023

Results in this title

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

„… axle disconnect for EV sailing mode. • Power shift 2-speed and multi-speed shift systems. • Shift …” „… reliably shift between forward propulsion, coast (disconnect), regeneration, and reverse modes. Design …” „… electronic park-lock, hill-hold and multi-speed shifting, combining the functions of historical ICE …”

C. Mohr Acoustic Optimization of Electric Powertrains from a Vehicle Level Perspective S. 471-XVI

„… transmission, also known as a "MultiMode transmission", Schaeffler is pursuing a further significant …” „… forces on the vibration behavior of a Multi-Mode transmission The optimization of …” „… , non-switchable transmission ratio, has been selected in such a way that the following operating modes are …”

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

„… vehicles, referred to as the "MultiMode Hybrid Transmission" (MMH), is currently under development at …” „… optimization opportunities beyond the current volume development of multi-mode hybrid transmissions. One …” „… overload in the transmission parts along the torque transmitting line. For the Schaeffler MultiMode Hybrid …”

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

„… four direct gears in parallel modes. The basic idea and the advantages of multi speed and multi motor …” „… , multi-speed transmissions for electrified vehicles were analyzed and emissions were presented with regard …” „… : 4.13 EM peak power in kW 120 120 2x 60 With multiple EMs or multi speed transmissions, there is at …”

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

„… multi-plate clutches are used in modern automotive powertrains to perform essential roles in terms of function …” „… K et al. (2022) Failure Modes of Spontaneous Damage of Wet-Running Multi-Plate Clutches with Carbon …” „… , have increased the power density in transmissions over the last decades [1]. Consequently, wet …”

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

„… including a 90 kW generator EM and a 90/140 kW traction EM. The DHD Duo features an electric and serial mode …” „… as well as a scalable parallel mode with 1 to 4 gears according to individual require-ments. The …” „… serial driving operation, as well as parallel mode operation at higher speeds. At low engine loads, the …”

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

„… multi-plate friction systems (MPFS) are typical shift elements in the drivetrain of ICE and Hybrid electric …” „… shift elements, for example to realize multi speed functionality, for connect / disconnect applications …” „… Electric Vehicles), classical single or multi-cone synchronizers as well as MPFS will become less important …”

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

„… meet the power demands for most passenger vehicles. Multi-gear transmission is also available in order …” „… design. This suggests finding a suitable complete propulsion system solution, e.g., transmission …” „… solutions for two vehicles will be shown. A standardized transmission is used with adjustments in housings …”

doi.org/10.51202/9783181024201

VDI Wissensforum GmbH - International Conference on Gears 2017

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2017

Series: VDI-Berichte

Volume 2294 2017

Results in this title

J. Neufond, Y. Xu, J. Perret-Liaudet, E. Rigaud The iterative spectral method for computing the planetary gear dynamic response S. 209-218

„… planetary gears multi-degree-of-freedom modelling is built. Eigenmodes, dynamic transmission errors and …” „… modes less contribute to the dynamic transmission error. The spectral iterative appears to be an …” „… stationary conditions, multi-frequencial responses. These responses lead to parametric resonances when …”

W. Wang, L. Han, Q. Yan, C. Xiang, Y. Li Research on the dynamic power split characteristics and the electric power coordinated control for a hybrid transmission system S. 131-142

„… . 1. Introduction The dual-mode electro-mechanical transmission system is an important form of …” „… heavy-duty vehicles with dual-mode electro-mechanical transmission, there are plenty of special problems …” „… planetary gears are used for the EMT. Fig.1: Structure of dual-mode electro-mechanical transmission …”

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

„… Design and experimental validation on a novel tow speed transmission for electric bus Jie Yu …” „… Technology Ltd., Fuzhou City, Fujian, China Abstract A two-speed transmission for electric vehicles is …” „… the drive system with proposed two-speed transmission, a bench test and a real driving cycle on …”

S. Jain, B. James A simulation approach to calculate gear dynamic-factors for high-speed applications S. 649-658

„… . Traditionally, multi-body models with only torsional degrees-of-freedom are used to calculate dynamic gear …” „… speed, torque and system resonance modes on the dynamic factors of a high-speed gearbox. The dynamic …” „… lumped-parameter model is excited by gear-mesh transmission errors to obtain the gear dynamic factors …”

F. Yang, W. Bi Efficiency evaluation of multi-speed transmission S. 1101-1108

„… Efficiency evaluation of multi-speed transmission Prof. F. Yang, Dr. W. Bi, School of mechanical …” „… multi-speed transmission is proposed. Load dependent/load independent power losses of each component and idle …” „… ) automatic transmissions in modern vehicles [2], which makes it much more difficult to predict their …”

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

„… manufacturing technologies are, for example, the need for system downsizing in transmissions and differentials …” „… Harshness) requirements - especially for electrified transmissions or e-Axle solutions. In case of making …” „… use of sintered gears in highly loaded applications like automotive transmissions, advanced net shape …”

H. Hansson, H. Alm, A. Eng, M. Olsson Beveloid gears in planetary gear trains for increased Grundström, power density and reduced backlash Stensson, S. 579-590

„… . Eng. ME. Hans Hansson, Henrik Alm Grundström, Swepart Transmission AB, Liatorp, Sweden; Alexander …” „… . Multi Body Dynamic simulations have shown that by using beveloid gears and a balancing system creating …” „… in multi planetary gear train is the load distribution factor 1 . k 1 0,25 N 3 1.1 The …”

E. Chiappetta, D. Morrey Non-standard spur gear tooth profiles for improved epicyclic gear system performance in low speed applications S. 825-834

„… generated by using multi parametric contour plots. This technique is based both on functional limitations …” „… terms of centre distance and transmission ratio, the simultaneous influence of pressure angle and …” „… transmission systems, the concept of high torque density, which means carrying more torque within the same …”

T. Nagumo, M. Ishizuka, Y. Satou, S. Matsumura, H. Houjoh Estimation of loaded static transmission error using vibration measurement under operating conditions in a two-stage helical gear reducer S. 857-868

„… Estimation of loaded static transmission error using vibration measurement under operating …” „… transmission error (STE) waveform by vibration measurement under operating conditions was applied to a …” „… [1,2]. The loaded static transmission error (STE) is widely used for evaluating gear mesh excitation …”

Y. Cai, L. Yao, Z. Xie, J. Zhang, C. Peng Influence analysis of system parameters on characteristics of the nutation drive with double circular arc spiral bevel gears S. 435-446

„… force 1. Introduction In mechanics, nutation movement is a new type of transmission mode based on …” „… Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China Abstract Gear transmission …” „… systems are one of the most frequently used systems for power transmission. The characteristics of a gear …”

A. Kahraman, H. Ligata Effects of external splines on deformations of ring gears of planetary gear sets S. 341-352

„… sets are multi-mesh systems formed by multiple branches of planet gears that are in mesh with a sun …” „… small truck transmission was adapted as the test planetary gear set in this study. Parameters of this …” „… analysis of multi-channel strains and deflections through root strain gauges and LVDT probes was to study …”

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

„… optimization of teeth numbers Modern powertrains of electric drive cars are driven by small machines with high …” „… transmission ratios, which can lead to high noise contrary to current comfort requirements. Identifying …” „… also possible to represent the planetary as threedimensional multi-body system (MBS), which offers the …”

U. Kissling, M. Stangl The documentation of gearbox reliability – an upcoming demand S. 1051-1062

„… with nominal load or duty cycles. To determine the reliability of the drive system, the transmission …” „… would apply in an emergency. Fig. 4: Modern dual clutch gear unit with a load spectrum (6 forward …” „… system reliability can easily be understood by people who do not have a detailed knowledge of the modern …”

G. Goch, K. Ni, Y. Peng, A. Günther Paradigm change in cylindrical gear metrology using areal measurement and evaluation S. 1025-1038

„… automotive and various industrial transmission systems. They have to meet high accuracy requirements in …” „… high accuracy and performance level is indispensable for a modern gear production in terms of quality …” „… automobile-size gear in a few minutes. However, large gears like the ones used in multi-Megawatt wind energy …”

doi.org/10.51202/9783181022948

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VDI Wissensforum GmbH (ed.)

ELIV 2023

Series: VDI-Berichte

Volume 2423 2023

Results in this title

T. Schwendner, M. Schlodder SAE J1939 in AUTOSAR – CAN FD and CAN XL – Achieve Higher Data Rates for J1939 Communication in AUTOSAR S. 635-644

„… , communication in modern E/E architectures has continued to grow, requiring higher transmission rates. The SAE …” „… Multi-PG concept, J1939-22 introduces changes to the Broadcast Announce Message (BAM) and Connection Mode …” „… condition for transmission of the Multi-PG is met (e.g. timeout or size). Similarly, IPduM unpacks a …”

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

„… mechanical connections enabling the transmission of torque between the electric powertrain and the driveline …” „… gearbox with a constant transmission ratio. The gearbox losses are modeled with a constant efficiency but …” „… environmental conditions and the temperatures of the powertrain components. In serial mode (A connects to B, C …”

K. Eliasch, Dr. P. Friedel, D. Li, D. Shan Cooperative Perception Services to Improve the Safety of Road Users S. 347-364

„… human errors[ 2 ]. Unfortunately, although modern ADAS and AD systems can increase individual safety …” „… , cyclists, pedestrians, etc. HELLA’s Radar has three working modes (near range, middle range, and long range …” „… multi-sensors and the V2X communication system. The system architecture is illustrated in Fig. 2 below. Fig. 2 …”

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

„… modern vehicles. Therefore, software is taking the lead and rules the hardware. Centralized …” „…  256 GB/s). E/E architectures for the software-defined vehicle Modern software-defined vehicles require …” „… inserted into its frame/rack. The cooling pad consists of a robust welded multi-layer material which …”

L. Heinrich, M. Springer, D. Schütz, J. Pannek A Holistic Approach for a Universal Vehicle-to-Robot (V2R) Communication Interface S. 365-378

„… hardware. Based on modern Robot-to-Everything (R2X) and Vehicle-to-Everything (V2X) communication and an …” „… Communication Interface. To provide background for our UVCI concept, we elaborate on the modern R2X and V2X …” „… elaborate on the modern R2X and V2X communication examples and provide an overview of their capabilities …”

T. Löhr, B. Bauer Supply chain security risks of software driven products S. 479-496

„… supply chain operations. Both concepts are crucial for the effective and secure functioning of modern …” „… to recalls and reputational damage. Electronic Control Units (ECUs) in modern vehicles are …” „… information. In the era of connected cars, the collection and transmission of driver and vehicle data is a …”

doi.org/10.51202/9783181024232

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