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Viewing 1 to 30 of 5365
Event
2015-06-22
The focus of the Structural Analysis session is to share experiences on analyzing, testing, and developing solutions to structural noise and vibration problems from powertrain sources. Analytical modeling, experimental testing and predictive correlation are just a few of the tools used in this endeavor.
Event
2015-06-22
This session deals with analytical, computational and experimental studies of the dynamic response including noise and vibration of automotive driveline system and components. Typical topics of interests include, but not limited to, torque converters, gear noise, axle noise driveline system dynamics, transmission noise and vibrations, powertrain dynamics, transient dynamic response and propshaft balancing.
Training / Education
2015-04-22
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. Automatic transmission design will illustrate the concept of automatic control and hydro-mechanic decision theory and implementation.
Training / Education
2015-02-03
Hybrid powertrains have been on the market for more than a decade and have become one of the most successful alternative powertrains available today. More than a million hybrids are sold globally per year, primarily in Japan and the US. Some OEMs estimate that up to 80% of their light-duty vehicles may require some level of hybridization to meet upcoming CAFE regulations in the United States. Hybrids are also starting to make inroads into markets in Europe, and have recently been introduced to Chinese and Indian markets, among others. Basic information on hybrids is scattered among information sources, and is often difficult to synthesize.
Event
2014-12-17
Event
2014-12-09
Recent legislation has been enacted requiring unprecedented reductions in greenhouse gas emissions, and thus improved fuel efficiency, from internal combustion engines. The aggressive rate of improvement in fuel consumption mandated by this legislation has resulted in the proposal of more exotic combustion strategies than have previously been considered for serial production. The new combustion strategies that are being considered for near term applications can result in substantially different operating environments and thus the required performance of the emission control system. To deliver the most efficient engine system for each application, the impact of the combustion strategy on emission control system requirements must be taken into account when selecting the combustion strategy for production to ensure the benefits of the combustion strategy are not offset by penalties associated with treating exhaust emissions. This discussion will present data on the impact of novel combustion strategies on the operating environment for the emissions control system.
Event
2014-12-09
In-cylinder blending of gasoline and diesel to achieve reactivity controlled compression ignition (RCCI) has been shown to reduce NOX and particulate matter emissions while maintaining or improving brake thermal efficiency as compared to conventional diesel combustion. While RCCI operation has been shown to produce significant reductions in NOx and soot emissions, unburned hydrocarbons and CO emissions tend to increase compared to diesel combustion. This presentation discusses the current research into exhaust aftertreatment opportunities and challenges of proposed multi-mode diesel/RCCI operation where an engine would switch to diesel operation in areas outside the RCCI operating window.
Event
2014-12-03
Training / Education
2014-12-02
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. Attendees will receive an introduction to the various components of the drivetrain, including the clutch or torque converter, manual or automatic transmission, driveshaft, axle, wheel ends, and brakes.
Event
2014-11-19
Event
2014-11-05
Event
2014-10-22
Event
2014-10-22
This session sets out to reflect the recent advances on the research, development and practices of Powertrain NVH treatment. The technical papers are of interest to powertrain system designers, testing specialists, NVH experts, and other individuals who evaluate and develop technologies to control powertrain NVH. The coverage includes: engine, engine subsystem and components noise and vibration; powertrain systems noise measurement and instrumentation; powertrain systems noise analysis.
Event
2014-10-21
The industry continues to work on understanding the interaction of lubricating fluids with driveline hardware in order to improve vehicle efficiency, durability, and performance. Discussions in this session involve lubricant studies that offer improvements to current fluids, alterations of test methods or provide new insights into how lubricants impact current technology.
Event
2014-10-15
To control transmission solenoid efficiently and ensure its functionality, ASIC is used in TCU and it has its own diagnostic function to detect abnormal functionality. Through this diagnosis function of ASIC, mechanical part of transmission can be protected from wrong shifting control by shutting off all of solenoid power when circuit failure of each solenoid or its related wiring connection is happened. After confirmation of failure of solenoid or its related wiring connection, then TCU does not control any of solenoids and vehicle goes into limp home mode for vehicle maintenance by shutting off power of solenoids. Some of TCU uses high side driver for solenoid to supply power on each of solenoid and to control each of solenoids and it has its own limited diagnostic function. But provided diagnosis function of high side driver can not be used because it can cause wrong diagnosis of ASIC which used for low side control of solenoids. In addition, supplied diagnosis function of high side driver can not distinguish correct failure root cause so that it can violate OBD (On Board Diagnosis) regulation released by California Air Resource Board.
Event
2014-10-15
Modern vehicles are becoming increasingly complex – partially due to the growing requirement of transmissions that need optimisation of the gearshift process – examples being automated conventional and automatic transmissions, as well as double clutch and continuous variable transmissions (CVT). This increasing variety of configurations leads to complex development scenarios, that can manifest themselves as problematic issues affecting sensitive shift procedures – for example, a down-shift manoeuvre, that needs to be calibrated to provide seamless transition between ratios To assist in solving these problems, AVL has developed a tool chain and methodology, using powerful system architecture, to reproduce measure and model the problematic symptoms. In a particular case, the coast down shift from 3 to 2, in an automatic transmission with a high number of gears. One of the major tasks was to identify the quality problems that occur during a specific coast down shift manoeuvre whilst driving the vehicle on the road.
Event
2014-10-15
Predicting the temperature distribution within a gearbox under operating conditions is a challenging task. This is due to the unsteady multiphase flow of the oil, local heat generation sources between the intermeshing gears and within the bearing, and the complex external airflow pattern surrounding the casing. Geometrical details within the gearbox, for example small gaps and features, as well as detailed cooling fins structure sounding the casing add to the modeling challenges. Complexities also arise due to the drastically different time scales representing the highly transient flow within the gearbox and the near steady external airflow removing that thermal load. For example, the gearbox needs minutes to reach its steady state temperature which represents tens of thousands of revolutions of the gears. The current work represents a methodology for modeling this multi-scale problem. A generic four-speed gearbox is considered. First, the detailed isothermal multiphase flow of the oil is modeled using the volume of fluid (VOF) technique to predict the splashing pattern, oil coverage and churning losses.
Event
2014-10-15
In order to improve fuel economy to meet future regulatory standards, many new features must be added to vehicle powertrains. One of these is Stop/Start (micro hybrid) technology; allowing engine stop when operation is not necessary such as idling during traffic stops. Stop/Start technology allows auto manufactures to meet increasingly difficult fuel economy standards. In automatic transmission vehicles, the transmission must remain able to quickly engage gear in order to allow quick response on engine restart.
Event
2014-10-15
Global OEMs face increasing regulatory requirements to reduce CO2 emissions and fuel consumption. One of the key technologies to enable meeting these requirements are engine stop-start systems, which can typically achieve a 2 to 4% fuel consumption benefit. As a result, stop-start systems are having significant growth with sales projected to reach 50 million units/year by the end of this decade.
Event
2014-10-15
The European and Chinese passenger car markets are seeing the continued growth of the dual clutch transmission (DCT) which can be well understood against the background of its advantages. For the driver these include improved fuel economy, dynamic acceleration, smooth shifts and, if the driver so chooses, manual control of the gears without the hassle of manually disengaging and engaging the clutch. For the automobile manufacturer, the DCT provides an opportunity to introduce an automatic alternative to an existing manual transmission platform. A critical component to the success of the DCT is the lubricant. DCTs incorporate aspects of both automatic and manual transmission architectures and the lubricant technologies used to enable the successful operation of these two architectures is vastly different, and generally not compatible. Therefore DCTs have required the development of new lubricant technology. The general process of optimizing a lubricant involves evaluation of candidate formulary in various tests of increasing complexity and harshness.
Event
2014-10-15
As transmission development has rapidly increased in complexity, so too has the transmission control software. Due to these requirements, extensive testing and documentation along with quick and efficient development are required. FEV responds to these challenges by integrating a transmission software architecture with an automated verification and validation process. The FEV architecture breaks down the software and reduces complexity while making it testable and reusable The FEV software development process incorporates AUTOSAR standards and safety standards such as ISO26262 in a structure that aids in the reusability of functions and components, thereby reducing development and testing time. This modular architecture approach supports efficient and simplified unit level testing as well as expedient component level testing once all of the functions are integrated. FEV believes in extensive unit level testing from very early in the development process which results in improved software quality at reduced overall costs.
Viewing 1 to 30 of 5365

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