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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
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.
2017-04-04
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 addresses transmission noise, vibration, rattle issues and design solutions.
2017-04-04
Event
This session covers transmission and driveline controls. Session will cover topics related to controls hardware, controls software, and controls integration.
2017-04-04
Event
This Session includes papers on IVT/CVT systems and related topics.
2017-04-04
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.
2017-03-01 ...
  • March 1-2, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • September 25-26, 2017 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
An efficient, robust, and quiet running drivetrain is as essential to customer satisfaction as styling and interior creature comforts. In this seminar, you will be exposed to various methods that can be used to accomplish this goal. Designed to help you visualize both individual components and the entire drivetrain system - without reference to complicated equations - this seminar focuses on the terms, functions, nomenclature, operating characteristics and effect on vehicle performance for each of the drivetrain components.
2017-02-07 ...
  • February 7-16, 2017 (4 Sessions) - Live Online
  • 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.
2017-01-10
Technical Paper
2017-26-0036
Ingo Steinberg, Dan Freiholtz, Gereon Hellenbroich
In India, the market demand for passenger cars with automated manual transmissions is steadily increasing. So far, the most successful vehicles addressing this trend use magnitude as the sales of vehicles with manual transmissions. Since customers are expecting even smoother vehicle operation, the next anticipated step is the move to automatic transmissions without any torque interrupt during gear shift. This can favorably be addressed with the dual clutch transmission technology. Re-utilization of already existing manufacturing facilities is possible with the retention of the lay-shaft design. Dual clutch transmissions offer driving characteristics, including vehicle launch, which are very similar to the behavior of vehicles with manual transmissions. This applies also to the fuel economy. Against this background, this article introduces an all new concept for a very cost efficient dual clutch transmission family for transversal, transaxle powertrains.
2017-01-10
Technical Paper
2017-26-0101
Jakob Howard, Mike Savage
Mild-hybridisation of conventional powertrains is set to become commonplace over the next 5 years, providing a proportion of the on-cycle and real-world CO2 benefits of a high-voltage hybrid at a far lower cost. However, the majority of this focus is around engine-related systems such as belt starter-generators and electric-superchargers. Design studies and simulations have shown that hybridising elements of the transmission system can extend the efficiency gains of engine based mild-hybrid and stop-start systems. Equally important, is the potential for a transmission integrated electrical system to support value-adding features such as electric creep, engine-off coasting or electric torque support for manual or automated manual transmissions, which can either further justify or partially offset the additional cost of the hybrid system.
2017-01-10
Technical Paper
2017-26-0088
Christoph Danzer, Jens Liebold, Erik Schreiterer, Jörg Mueller
Currently known hybrid systems are technically complex and cost-intensive and referring to this for many end customers not available. Under this boundaries IAV has developed a cost optimal minimal concept of an efficient and modular powertrain platform for electric and hybrid vehicles. The system based on one unity gear set for up to three speeds, which enables seamless shifting with only one friction based clutch. With this platform powertrain units can be realized by using a maximum number of carry over parts (COP) for electric vehicles as well as for powerful hybrids. The derivable hybrid powertrains of the platform system is designed for 48V electric motors which enables the maximum cost potential in combination realized gear set and transmission technology. The real simple powertrain platform concept is furthermore scalable for different vehicle segments optionally with or without a hybrid option.
2017-01-10
Technical Paper
2017-26-0058
Mirko Leesch, Erik Schreiterer, Gitesh Mutha
IAV developed a complete new dual-clutch transmission (DCT) system with focus on flexible usage and costs. As an entry level DCT the design is made for an east-west installation with maximum 200 Nm input torque which could be easily adapted between 100 Nm and 300 Nm. Furthermore the transmission can deliver 6 and 7 speeds with state-of-the-art, robust design solutions and future-oriented reverse gear design with engaged countershafts. The distance between the input shaft and the differential can be changed between 170 mm and 215 mm without changes in the gear set. This is an edge breaking advantage compared to state-of-the-art systems. Beside this flexibility the transmission can realize a first gear ratio from 12.2 to 18.5 and a total ratio spread from 4.4 to 8.5.
2016-12-07
Event
2016-11-16
Event
2016-11-08
Technical Paper
2016-32-0021
Stephen Gurchinoff
Abstract This technical paper will provide supporting lubricated test data for the use of thermoplastics like polyamide-imide (PAI) and polyetheretherketone (PEEK) in demanding wear applications at temperatures up to 285°C and pressure velocity exceeding one million psi·ft/min. Applications include needle bearing replacement in transmissions, journal bearings, pumps, marine lower units, continuous variable transmissions, and others. These materials have been used in automotive transmission applications for over 20 years and can be similarly used in small engine applications. By using a thermoplastic, applications benefit through reduced noise and vibration harshness, reduced space, and reduced weight. Mechanical property differences throughout operating temperatures will also be reviewed.
2016-11-08
Journal Article
2016-32-0036
Takamori Shirasuna, Ryoh Hatakeyama, Yukio Sakai
Abstract A simulation tool has been developed that can be used to estimate a fuel economy while driving in a mode test of a motorcycle equipped with a continuously variable transmission (CVT) at an early stage of development. For a precise estimation of a mode fuel economy, it is necessary to accurately estimate the CVT ratio, the engine speed, and the crankshaft torque during driving in a mode. To achieve this, this study has generalized the transmission efficiency of a CVT system. This study has also derived developed balance equations that can take into account the transmission efficiency of CVT and the slippage that occurs when the centrifugal clutch is about to be engaged. In the proposed method, the pulley ratio of CVT, the engine speed, and the torque at the crankshaft were obtained first by solving the developed balance equations at discrete times during driving in a mode.
2016-10-26
Event
This session deals with papers on automotive transmissions of different types, their enhancements and controls.
2016-10-23
WIP Standard
J647
The following schematic diagrams exemplify the SAE recommended method of illustrating automotive transmission arrangements. They were developed to standardize industry practice and facilitate a clear understanding of the functional interrelations of the gearing, clutches, hydrodynamic drive unit, and other transmission components. Two variations of diagrams are used: Transmission in neutral and in gear. For illustrative purposes, some typical transmissions are shown.
2016-10-23
WIP Standard
J649
The following is a list of the most common terminology used in describing automatic transmission functions.
2016-10-23
WIP Standard
J645
The following listed definitions are intended to establish terminology and criteria for describing the various kinds of automotive transmissions. A specific arrangement may be described by a combination of several of these definitions.
2016-10-17
Technical Paper
2016-01-2311
Arun Prasath G, Saravanan Duraiarasan, R Govindarajan
Indian two wheeler market is one of the largest and highly competitive in the world. Indian scooter segment grows at a pace of around 30% YOY. The stiff competition among OEM’s to increase the market share with fuel efficient and high performance products pushes development and calibration engineers to burn the midnight oil to concoct innovative methods to design technology boosted product. Customer expectations are always high in terms of fuel economy, drivability and NVH. Due to higher level of complexity involved in CVT (Continuously Varying Transmission) engine, it is difficult to optimize for achieving best of NVH characteristics along with Fuel Economy, drivability and reduced exhaust emission. This paper describes the experiment conducted during the development of 110cc CVT four stroke scooter engine. The development and calibration of this scooter was mainly based on real world usage pattern (RWUP).
2016-10-17
Technical Paper
2016-01-2206
Darryl Williams, Jeffrey Guevremont, John Perry
Abstract Good shift quality in automatic transmissions is important for fuel efficiency, driver comfort, and performance. Maintaining this performance over the life of the vehicle is also important. Typically lubricant development focuses on reducing viscosity and friction in order to reduce parasitic losses. In an automatic transmission other factors are also important for good performance, primarily due to the shifting clutches and the torque converter clutch. A high level of friction is desirable for torque capacity and a steady decrease in friction as sliding speed (rpm) decreases is necessary for both good shift feel and good friction system durability over the lifetime of the vehicle. Changes in the friction system over time that result in a lowering of the friction level, particularly at higher sliding speeds, compromise the performance of both types of clutches.
2016-10-17
Technical Paper
2016-01-2207
Elizabeth Schiferl, Timothy N. Hunt, Robert Slocum
Abstract With government mandates, original equipment manufacturers are increasingly focusing on fuel economy and finding efficiency gains throughout the vehicle. Lubricant companies have been asked to design fluids that aid in this effort. Demonstrating real gains becomes complex given the intricacies of these systems and methods range from bench top screen tests to component test stands to full vehicle testing. This paper addresses the variation that was encountered when testing automatic transmission fluid efficiency within a full vehicle test. While it is well known that variability in testing conditions such as engine load or vehicle speed will lead to variability in results, the magnitude of their impact on average throughout the test cycle suggests that repeat testing may not be sufficient to guard against improper conclusions.
2016-10-17
Technical Paper
2016-01-2343
Mark Devlin, Darryl Williams, Michael Glasgow, Karen Hux, Aaron Whitworth, Timothy Cameron
Abstract Improving vehicle fuel efficiency is a key market driver in the automotive industry. Typically lubricant chemists focus on reducing viscosity and friction to reduce parasitic energy losses in order to improve automotive fuel efficiency. However, in a transmission other factors may be more important. If an engine can operate at high torque levels the conversion of chemical energy in the fuel to mechanical energy is dramatically increased. However high torque levels in transmissions may cause NVH to occur. The proper combination of friction material and fluid can be used to address this issue. Friction in clutches is controlled by asperity friction and hydrodynamic friction. Asperity friction can be controlled with friction modifiers in the ATF. Hydrodynamic friction control is more complex because it involves the flow characteristics of friction materials and complex viscosity properties of the fluid.
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