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2017-10-03 ...
  • October 3-12, 2017 (4 Sessions) - Live Online
Training / Education Online Web Seminars
Continuously Variable Transmission (CVT) technology is both a theoretical and practical option that addresses a number of system level improvement opportunities within the automotive and mobility industries. Although this technology has been available for many years and is now fully matured as a production ready technology, it is often not fully understood. This web seminar presents a focused view of CVT technology in all its forms and implementations.
2017-04-24 ...
  • April 24-28, 2017 (8:00 a.m. - 6:00 p.m.) - Troy, Michigan
Training / Education Classroom Engineering Academies
The Transmission Engineering Academy covers the sciences of automotive passenger car and light truck engineering principles and practices necessary to effectively understand, develop, specify and start the design process. Topics include advances in manual, automatic, automated manual, and continuously variable transmission technology, materials and processes applicable to the major components within these transmissions, calibration of these systems unto themselves and integration into the full vehicle powertrain.
2017-04-06
Event
This session covers transmission and driveline controls. Session will cover topics related to controls hardware, controls software, and controls integration.
2017-04-06
Event
This session deals with the automotive transmissions of different types. It includes development of new transmission concepts, transmission enhancements and the advancement of the state of the art of transmission system design & integration with the objective of improving the transmission efficiency, NVH, durability and shift pleaseability.
2017-04-05
Event
This session addresses transmission noise, vibration, rattle issues and design solutions.
2017-04-05
Event
Powertrain Electronics play a key role in meeting today's complex emissions and performance requirements, on-board diagnostics, legislated regulations, and product flexibility. This session explores the challenges and future prospects for powertrain controls, including on-board diagnostics, integration with transmissions, flash programming, service, software design and development, unit and system test, and electronics architecture today and in the future.
2017-04-05
Event
This Session includes papers on IVT/CVT systems and related topics.
2017-04-05
Event
This session addresses transmission noise, vibration, rattle issues and design solutions.
2017-04-05 ...
  • April 5-7, 2017 (8:30 a.m. - 4:30 p.m.) - Detroit, Michigan
  • August 7-9, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • December 4-6, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
Starting with a look at the transmission's primary function -- to couple the engine to the driveline and provide torque ratios between the two -- this updated and expanded seminar covers the latest transmission systems designed to achieve the most efficient engine operation. Current designs, the components and sub-systems used, their functional modes, how they operate, and the inter-relationships will be discussed. A manual transmission display will be used to explain ratios and how they function within the driveline.
2017-04-04
Event
This session includes papers on the full array of transmission and driveline related components.
2017-04-04
Event
This session covers transmission and driveline modeling, including topics related to transmission hardware, software, and system integration.
2017-04-04
Event
This session covers transmission and driveline modeling, including topics related to transmission hardware, software, and system integration.
2017-04-04
Event
This session includes papers on the full array of transmission and driveline related components.
2017-03-28
Technical Paper
2017-01-0157
Forrest Jehlik, Simeon Iliev, Eric Wood, Jeff Gonder
It is widely understood that cold ambient temperatures negatively impact vehicle system efficiency. This is due to increased friction (engine oil, transmission, and driveline viscous effects), cold start enrichment, heat transfer, and air density variations. Although the science of quantifying steady-state vehicle component efficiency is mature, transient component efficiency over dynamic ambient real-world conditions is less understood and quantified. This work characterizes transmission efficiency utilizing transmission heating technologies over various drive cycles and ambient conditions. Dynamometer testing over hot and cold ambient temperatures was conducted for two vehicles utilizing transmission warming technologies, and one vehicle using pads to pre-heat the transmission. For the vehicles with transmission heating technologies, tests were conducted with the systems both on and off to compare gains in efficiency.
2017-03-28
Technical Paper
2017-01-1140
Yang Xu, Yuji Fujii, Edward Dai, James McCallum, Gregory Pietron, Guang Wu, Hong Jiang
A transmission system model is developed at various complexities in order to capture the transient behaviors in drivability and fuel economy simulations. A large number of model parameters bring more degree of freedom to correlate with vehicular test data. However, in practice, it often takes extensive time and effort to tune the parameters to satisfy the model performance requirements. Among the transmission model, a hydraulic clutch actuator plays a critical role in transient shift simulations. It is particularly difficult to tune the actuator model when it is over-parameterized. Therefore, it is of great importance to develop a hydraulic actuator model that is easy to adjust while retaining sufficient complexity for replicating realistic transient behaviors. This paper describes a systematic approach for reducing the hydraulic actuator model into a piecewise 1st order representation based on piston movement.
2017-03-28
Technical Paper
2017-01-1426
Wesley D. Grimes, Thomas H. Vadnais, Gregory A. Wilcoxson
The time/distance relationship for a heavy truck accelerating from a stop is often needed to accurately assess the events leading up to a collision. Several series of tests were conducted to document the low speed acceleration performance of a 2016 Freightliner Cascadia truck tractor equipped with an automated manual transmission in Auto Mode. Unlike the tests in previous papers, the driver never manually shifted gears. These tests included three trailer load configurations and two different acceleration rates. Data were gathered with both a VBOX and with the Detroit Diesel Diagnostic Link (DDDL) software. Results from both data acquisition systems were compared.
2017-03-28
Technical Paper
2017-01-1631
Weizhe Qian, Henry Zhang
Double Clutch Transmission system becomes more and more popular in vehicles because of the fuel saving performance, cost efficiency and comfortable feeling during gear change. To save fuel consumption, oil pump can be used for oil pressure on demand control. Sensorless control has cost advantage because it removes the motor position sensor. This paper will introduce a technical solution for BLDC (Brushless DC) motor sensorless control for oil pump used in DCT system. To implement sensorless block commutation of BLDC motor, usually Back-emf voltage needs to be compared with a reference voltage. A `zero-crossing point’ of the Back-emf voltage can indicate the rotor position, and hence motor can be controlled without position sensor. Phase feedback pins of Infineon pre-driver device TLE9180 provide these `zero-crossing point’ information based on hardware. The outputs of phase feedback pins are connected to a module CCU6 (capture compare unit6) from 32bit micro-controller Aurix.
2017-03-28
Technical Paper
2017-01-1108
Yulong Lei, Yao Fu, Ke Liu, Li Xingzhong, Zhenjie Liu, Yin Zhang, Xuanyi Fu
Selection of gearshift point plays an important role in the field of automatic transmission technology, which directly affects the vehicle dynamic and economic performance, etc. For stepped automatic transmission, it is generally believed that improving the fuel economy while not compromising the driveability is still a challenging research problem. And the traditional calibration method based on artificial experience widely used at home and abroad suffers from many issues, such as long development cycle, high cost, and real-time fault optimization between vehicle dynamic and fuel economy. In order to designing optimal gearshift strategies for conventional passenger vehicles equipped with stepped automatic transmission, in this paper, the analysis method of vehicle power demand was studied under different environment, different driving intention and different vehicle operating conditions.
2017-03-28
Technical Paper
2017-01-1103
Sergei Aliukov, Andrei Keller, Alexander Alyukov
The inertial continuously variable transmission is a mechanical transmission which is based on the principle of inertia. This transmission has a lot of advantages, namely: compactness, minimum friction losses and high efficiency as a result of the relatively small number of rotating components, a wide range of transformation of the torque. It does not need any conventional friction clutches. This transmission protects the engine from overload when the output shaft is braked. This drive guarantees optimum conditions of work for the engine regardless of the changing of load, and smoothly changes output speed according to the load. Mostly, design of this transmission consists of a pulsed mechanism with unbalanced inertial units and two overrunning clutches. The objects of the investigation are structural dynamic analysis of the continuously variable transmission. The physical and mathematical models of this transmission are developed.
2017-03-28
Technical Paper
2017-01-1110
Muammer Yolga, Markus Bachinger
With the introduction of new regulations on emissions, fuel efficiency and driving cycles, challenges for the powertrains are significantly increasing to a new level. During the transition phase for these new targets, hybrid-electric powertrains are an unquestioned option for short and long-term solutions. Hybridization however, not only brings benefits on these challenging efficiency or emission targets, but also allows numerous new possibilities on controls of different powertrain elements as well as new approaches of design of powertrain elements. A good example is transmissions where, hybridization allows a new transmission type called Dedicated Hybrid Transmission (DHT), which enables to use novel control strategies bringing improved performance, driveability, durability and NVH behavior. This paper focuses on the novel shift strategy where friction clutches do not have to slip.
Viewing 1 to 30 of 3586

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