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Viewing 1 to 30 of 164
2010-10-25
Technical Paper
2010-01-2094
John Williams, Nozomi Yokoo, Koichi Nakata, Rana Ali, Walter Bunting, Kenichi Ishiwa
Toyota and BP have performed a collaborative study to understand the impact of fuel composition on the combustion and emissions of a prototype 1.8L lean boosted engine. The fuel matrix was designed to understand better the impact of a range of fuel properties on fundamental combustion characteristics including thermal efficiency, combustion duration, exhaust emissions and extension of lean limit. Most of the fuels in the test matrix were in the RON range of 96 - 102, although ethanol and other high octane components were used in some fuels to increase RON to the range 104 - 108. The oxygen content ranged from 2 - 28%, and constituents included biocomponents, combustion improving additives and novel blend components. Performance and emissions tests were conducted over a range of engine operating conditions. Thermal efficiency was mapped at stoichiometric and lean conditions, and the limit of lean combustion was established for different fuels.
2011-04-12
Technical Paper
2011-01-0741
Shozo Yoshida, Masato Ehara, Yukio Kuroda
In recent years, engine control systems have become more and more complex because of the growing pressure to develop technical innovations due to social pressures such as global warming and the depletion of fossil fuels. On the other hand, products must be launched on the market in a timely manner and at low cost. For these reasons, calibration processes have become more sophisticated. It is possible to improve the efficiency of calibration by making good use of models, and a calibration process that incorporates models is called model based calibration (MBC). MBC is a valid means of reducing the number of measurement points to some extent by statistical engine modeling and design of experiment (DoE) methodology which places measurement points in order to maximize modeling accuracy. However, it is still necessary to spend much time carrying out boundary detection testing before DoE.
2013-04-08
Technical Paper
2013-01-0380
Kazutaka Ohno, Yoshiki Tomita, Eisuke Yagi, Hirofumi Nakano
As greater emphasis is placed on the development of small fuel-efficient cars, there is a growing need to reduce the size of the inverter used in hybrid vehicles (HVs). However, semiconductor devices and other components are generating larger amounts of heat and the parts used to cool these components are becoming thinner. One issue resulting from these trends is perforations that propagate from coolant paths. This development secured corrosion resistance by controlling sacrificial corrosion protection performance, optimizing the use of Mn and Si materials to reduce susceptibility to grain-boundary corrosion, and taking a microstructural approach to the flow of the brazing filler metal. The developed material was applied to the inverter cooler of a small HV released at the end of 2011.
2007-04-16
Technical Paper
2007-01-0436
Glenn W. Scheffler, Jake DeVaal, Gery J. Kissel, Jesse Schneider, Michael Veenstra, Tommy Chang, Nate Warner, William Chernicoff
The SAE FCV Safety Working Group has been addressing fuel cell vehicle (FCV) safety for over 7 years. The initial document, SAE J2578, was published in 2002. SAE J2578 has been valuable to the FCV development with regard to the identification of hazards and the definition of countermeasures to mitigate these hazards such that FCVs can be operated in the same manner as conventional gasoline IC-powered vehicles. The document is currently being updated to clarify and update requirements so that the document will continue to be relevant and useful in the future. In addition to developing draft revisions to SAE J2578, the working group has updated SAE J1766 and is developing a new recommended practice on vehicular hydrogen systems (SAE J2579). The documents are written from the standpoint of systems-level, performance-based requirements. A risk-based approach was used to identify potential electrical and fuel system hazards and provide criteria for acceptance.
2008-04-25
Article
Featuring halogen-free requirements, high performance, durability, smaller size, and recyclability, Delphi’s halogen-free cable can reduce both cable mass and harness diameter by more than 20% in automotive applications.
2008-04-11
Article
The Toyota Land Cruiser may be thought of as just a rugged hunk of off-roading SUV. But the 2008 model has a Denso air-conditioning system with the first automotive use of ejector-cycle technology, an advancement that provides a low-cost way to improve energy efficiency.
2008-06-10
Article
Reinert, that is. And he has not yet joined the plug-in-electric bandwagon.
2008-08-06
Article
The green theme continues as suppliers and automakers stay focused on developing eco-friendly powertrains.
2008-08-06
Article
Considered to be the largest of its kind in the world, Toyota Motor Corp.’s new driving simulator at its Higashifuji Technical Center in Shizouka, Japan, uses an actual vehicle inside a 23-ft (7.0-m) diameter dome, with a 360° concave video screen simulating a realistic driving environment.
2008-07-29
Article
High fuel prices may force Congress to add dollars to the automotive research budget of the U.S. Department of Energy (DOE) for fiscal 2009.
2011-11-22
Article
Millions of kids have benefited from the science, technology, engineering, and math skills that are the foundation of the AWIM program.
2011-09-27
Article
Lithium-ion battery technology is adopted for the Prius Plug-In Hybrid. Compared with the standard Prius, the plug-in version has a 4.4-kW·h lithium-ion battery pack versus the standard model's 1.3-kW·h nickel/metal hydride pack.
2011-08-23
Article
Given the choice of developing their future-generation hybrid-electric technologies separately and deploying them later, or working together to develop and deploy a single hybrid technology sooner, Ford and Toyota have decided on the latter.
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.
2012-01-10
Article
To reduce weight, scale, and improve efficiency for the Prius c, every major component of the hybrid system was redesigned and high-strength steels were used in the chassis, while the NS4 signals Toyota’s new direction in design.
2012-01-09
Article
The interior features two 12.3-in LCD screens, one serving as an instrument cluster and the other as a navigation/infotainment display.
2012-01-20
Article
Though supportive of the decision by NHTSA, the U.S. National Highway Traffic Safety Administration, to close its investigation related to cases of unintended acceleration in some Toyota models, an arm of the National Academies has issued a report describing as "troubling" NHTSA's inability to convincingly address public concerns about the safety of automotive electronics.
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
IQ has seating for 3-4 people. HVAC case has blower integrated into center section case with evaporator and heater core, and glove box is removed, two design features that permit forward curvature of dashboard on passenger's side. This permits asymmetrical front seating so right side passengers have larger-car legroom.
2012-02-13
Article
For the industry to truly leverage high-volume production in order to lower battery costs, it needs to reduce the proliferation of different battery cell types and configurations. Don't expect that to happen any time soon.
2012-04-11
Article
It's the first Toyota car that not only was completely designed in North America at Calty, but also is being carried all the way through to production by the engineering team in Ann Arbor, MI. The new car takes a new direction in styling, is lighter, and puts more emphasis on handling.
2012-04-10
Article
Toyota Technical Center (TTC), a division of Toyota Motor Engineering & Manufacturing, North America Inc., announced April 5 that it will hire approximately 150 engineers, technicians, advanced researchers, and scientists by the end of 2012.
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
OEMs need to prepare their customers’ expectations for new fuel-efficiency technologies aimed at meeting the 2017-25 CAFE standards, stressed an expert panel of engineers at the SAE 2012 World Congress. And the attribute-based standards could adversely impact sales of the smaller vehicle segments, the experts noted.
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
The all-new D-segment sedan is the first in its class to bring a full hybrid powertrain—Toyota’s proven input-powersplit Hybrid Synergy Drive system—to the premium midsize segment.
2012-05-16
Article
As the U.S. Department of Transportation prepares for field tests that will help it decide whether to mandate vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications, potential suppliers are focusing on safety and security issues.
2012-10-09
Article
Two recent announcements attest to continuing efforts by government and industry to make the hydrogen fuel cell vehicle viable. On Oct. 5, the U.S. Department of Energy said it would make available $1 million for efforts to "identify cost-effective and efficient materials and processes to produce hydrogen from renewable energy sources and natural gas."
2012-11-20
Article
Reaction Design’s Model Fuel Library is a subscription-based library that includes more than 40 fully validated, self-consistent components that can be used to simulate fuel effects in virtually all types of automotive and aircraft engines, as well as engines used for electric power generation.
2012-08-27
Article
After just a 22-month development program, engineers from Toyota and Tesla have produced an all-electric version of the popular SUV.
Viewing 1 to 30 of 164

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