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Viewing 1 to 30 of 139
2000-03-06
Technical Paper
2000-01-0248
Helmut Eichlseder, Eckard Baumann, Peter Müller, Stephan Rubbert
This paper summarises the potential for the use of a gasoline direct injection engine for fuel economy benefits. Various engine technologies are compared for the greatest reduction in fuel consumption at the steady state point 2000rpm/2 bar. This is an important driving point in the EU cycle. The direct injection engine when used in an unthrottled lean stratified mode shows the greatest potential. Calculations show a fuel economy of a middle class vehicle can be increased by 12% using a DI over the EU cycle. The catalytic aftertreatment system is discussed and it is concluded that a close coupled pre-catalyst, a NOx trap and double injection are a good overall solution for the minimisation of exhaust gas emissions from a DI engine.
2010-04-12
Technical Paper
2010-01-1326
Ewa Drapala
In order to avoid the undesired side effect of water condensation occurring under special environment conditions in modern xenon lamps several modifications of the serial automotive headlamps were suggested. The suggestions consist of a) desired leakage in the cover, b) anti-fog coating and c) integrated ventilation tube. These strategies were tested using two types of serial head lamps applying a condensation cycle for the simulation of the urban condition. During this condensation cycle the thermodynamic parameters, like relative air humidity and temperature, were measured at different places in the head lamp and as function of time. The modification with the integrated ventilation tube is able to improve the serial head lamp significantly. The improvement in terms of water condensation for the modification using anti-fog coating depends from the number of cooling cycles.
2007-01-23
Technical Paper
2007-01-0035
Rudolf R. Maly, Volker Schaefer, Heinz Hass, G. F. (Barry) Cahill, Pierre Rouveirolles, Anders Röj, Rainer Wegener, Xavier Montagne, Alessandra Di Pancrazio, Julian Kashdan
Over the next decades to come, fossil fuel powered Internal Combustion Engines (ICE) will still constitute the major powertrains for land transport. Therefore, their impact on the global and local pollution and on the use of natural resources should be minimized. To this end, an extensive fundamental and practical study was performed to evaluate the potential benefits of simultaneously co-optimizing the system fuel-and-engine using diesel as an example. It will be clearly shown that the still unused co-optimizing of the system fuel-and-engine (including advanced exhaust after-treatment) as a single entity is a must for enabling cleaner future road transport by cleaner fuels since there are large, still unexploited potentials for improvements in road fuels which will provide major reductions in pollutant emissions both in vehicles already in the field and even more so in future dedicated vehicles.
2006-04-03
Technical Paper
2006-01-0675
Jeffrey Augenstein, Elana Perdeck, Kennerly Digges, George Bahouth, Peter Baur, Nils Borchers
Automatic Crash Notification (ACN) technology provides an opportunity to rapidly transmit crash characteristics to emergency care providers in order to improve timeliness and quality of care provided to occupants in the post crash phase. This study evaluated the relative value of crash attributes in providing useful information to assist in the identification of crashes where occupants may be seriously injured. This identification includes an indication of whether a crash is likely to require a level of emergency response with higher priority than is needed for most crashes reported by ACN Systems. The ability to predict serious injury using groupings of variables has been determined. In this way, the consequence of not transmitting each variable can be estimated. In addition, the incremental benefit of voice communication is shown.
1991-02-01
Technical Paper
910245
Hans-Hermann Braess, Karl-Nikolaus Regar
Back in the first two decades of automobile development, electric propulsion was a serious competitor for the internal combustion engine. Electrically-propelled vehicles, however, soon proved unable to satisfy users' increasing performance demands in terms of range, acceleration, top speed and hill-climbing, together with such factors as operating life, initial purchase price, running costs and reliability. Engineers investigating electric propulsion today face precisely the same unwelcome legacy as their predecessors, despite many and varied attempts in the meantime to improve the components of the electric vehicle's drive system (energy storage device, motors, controller). Progress in battery development, particularly in the case of the NaS system, has nevertheless enabled us at least partly to overcome the previous problems associated with electric drive systems, though it cannot be claimed that all obstacles to its commercial application have been eliminated as yet.
1986-10-20
Technical Paper
861061
Walter Weishaupt
1987-11-01
Technical Paper
872117
Bill Bitting, F. Gschwendtner, W. Kohlhepp, M. Kothe, C.J. Testroet, K.H. Ziwica
BMW has undertaken a comprehensive program including laboratory simulation rig tests, engine dynamometer and fleet evaluations to evaluate the influence of mechanical and fuel variables on induction system deposits in modern port fuel injected (PFI) spark ignition engines. The primary focus of the program has been the deposit buildup on intake valves (IVD) and associated driveability impacts. Initial investigations of engine modifications yielded only marginal improvements relative to deposit build-up and, therefore this led to investigations of the effect of gasolines and additives. Fuel quality, type, quantity of additives and alcohol content have all been found to be major contributing factors to intake valve deposition. In addition, intake valve deposit weight has been directly related to warm-up phase driveability concerns using a newly developed driveability procedure.
2008-03-31
Article
As government regulations spur automakers to trim emissions and fuel consumption, engine control systems are getting increased attention from chipmakers. Infineon has boosted the performance of its controllers, prompting BMW to tap the chipmaker's line for its M Series engine.
2008-03-31
Article
ContiTech Fluid Technology offers high-strength flat hoses that provide a large volume increase at minimal pressures.
2008-08-07
Article
Two topics of high interest to the auto industry—the decline of U.S. automakers and the push for energy conservation—are at the forefront of research projects at Argonne National Laboratory. The research lab will spend around $40 million for transportation research this year, and its research efforts could help to determine what projects the U.S. Department of Energy suggests Congress should consider supporting.
2008-06-09
Article
“World firsts” are rife in the automotive industry and BMW M has come up with another, claiming the accolade for its new seven-speed double-clutch gearbox (M DCT) with Drivelogic control.
2008-05-14
Article
The Abaqus 3D BioRID II (Biofidelic Rear Impact Dummy II) finite element model, created by Dassault Systèmes’ Simulia brand, simulates the crash dummy used for rear testing.
2008-06-24
Article
Alternative energy sources and combustion processes are getting ample focus from the industry as high fuel prices continue to keep the attention of consumers.
2008-05-28
Article
BMW is banking on its new 1 Series to open doors for new customers seeking a lower-cost sporty machine with a badge of exclusivity.
2008-06-24
Article
As moderator for an SAE World Congress panel session, Michael Robinet, Vice President of Global Vehicle Forecasts for CSM Worldwide, presented some interesting data about the shifting landscape of the global customer. He noted that wealth for the average global citizen is expected to increase 75% by 2030, driven mainly by emerging markets such as Russia, China, and India.
2011-08-26
Article
The companies will collaborate on an all-new hybrid propulsion system and component technologies for RWD, high-input-torque applications such as pickup trucks and SUVs.
2011-09-23
Article
The company reveals more details of its significant new electric sub-brand car concepts, the i3 and i8, including power, performance, and build.
2011-11-21
Article
The constantly growing demand for bandwidth in vehicle infotainment has reached a new threshold. Audi and Daimler will use MOST150 in 2012 and 2013 models while BMW will use Ethernet and IP via UTP cable in a first application in 2013.
2012-01-10
Article
BMW used the occasion of the North American International Auto Show to introduce the sixth generation of the 3 Series sedan and ActiveHybrid 3, dubbed the first full hybrid compact sport sedan in the premium segment.
2011-12-05
Article
BMW Group and Toyota Motor Corp. on Dec. 1 signed a memorandum of understanding for mid- to long-term collaboration on next-generation environment-friendly technologies. One definite area of collaborative research is next-generation lithium-ion battery technologies.
2012-01-09
Article
Mass efficiency, high power-to-weight ratio, and plenty of Nurburgring testing were keys to development of GM's new global compact sport sedan.
2012-01-09
Article
The 2013 Cadillac ATS compact sport sedan is claimed to be the most mass-efficient car in its class, thanks to GM's new lightweight Alpha body structure.
2012-02-03
Article
BMW is carrying out exhaustive R&D work on recovering engine waste heat. It believes there is great potential for considerable fuel savings if electric energy required by all vehicle onboard systems could be produced via the use of waste heat.
2012-04-24
Article
Floyd Allen, Powertrain Systems Executive, FEV Inc. set the tone for a Tuesday morning panel session at the SAE 2012 World Congress in Detroit by saying there is universal agreement that the United States needs to reduce its consumption of petroleum and develop some alternative energy sources capable of powering “at least a meaningful portion of our mobility needs.” Coming up with the solution(s) is the tricky part.
2012-04-25
Article
AEI spoke with SCM Metal Products’ Tom Pelletiers at the SAE 2012 World Congress about the North Carolina-based company’s next-generation lightweight materials.
2012-04-03
Article
BMW is now showing an exciting sister vehicle to its upcoming i8 coupe, the i8 Concept Spyder, an open-top version of the two-seater. Both cars employ a plug-in-hybrid powertrain system, in keeping with the i brand's focus on vehicles purpose-designed for electrified powertrains; the third model in the i lineup will be the all-electric i3.
2012-06-29
Article
BMW and Toyota have announced their intention to work together in four areas: fuel cells; architecture and components for a future sports vehicle; powertrain electrification; and lightweight technologies.
2012-06-27
Article
Federal-Mogul's Durabowl process and new 2D ultrasonic testing helps OEMs develop diesel pistons that will endure the higher mechanical and thermal loads associated with downsizing and boosting trends.
2012-06-22
Article
The breakthrough has come with a physical layer that allows for the in-car transmission of 100-Mbps Ethernet packets over cost-efficient unshielded twisted single pair cables. For future applications, the IEEE 802.3 working group has decided to investigate the development of an automotive suitable Gbit Ethernet.
2012-10-08
Article
The company used the 2012 Paris Motor Show to display the Active Concept Tourer that looks set to compete with FWD rivals such as the Audi A3 and Mercedes-Benz B-Class.
Viewing 1 to 30 of 139

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