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Viewing 1 to 30 of 138
2016-04-05
Technical Paper
2016-01-1187
Nobuaki Mizutani
Toyota has launched FCV, “Mirai” in last December, 2014. The FCV has the important part for realization of hydrogen society. Battery output and mileage that are problems of the FCV which uses hydrogen as a fuel depend on reaction of FC electrode catalyst. The FC electrode catalyst is consists of PtCo particle and carbon carrier. The purpose of this study is to enhance catalytic activity and diffusion mass transportation of FC electrode catalyst by the improvement of the PtCo particle and the pore less carbon support materials. Relation between Co/Pt atomic raito of catalyst and the cell current was investigated for catalytic activity. The catalytic activity improves and the cell current raises with increase of Co/Pt raito. But it was found that the raise of the cell current stopped at lower ratio of Co/Pt with the conventional cayalyst than that with the model catalyst.
2016-04-05
Technical Paper
2016-01-1313
Brian Pinkelman, Woo-Keun Song
Most methods of vibration analysis focus on measuring the level of vibration. Some methods like ISO-2631 weigh vibration level based on human sensitivity of location, direction, and frequency. Sound can be similarly measured by sound pressure level in dB. It may also be weighted to human frequency sensitivity such as dBA but sound and noise analysis has expanded to measure sound quality. The characteristic and the nature of the sound are studied. As an example equal or near equal sound levels can provide different experiences to the listener. Such was the question for vibration, “can vibration quality be assessed just as sound quality is assessed?” Early on in our studies vibration sensory experts found a difference in 4 seats yet we could find no objective measurement of vibration level that could reliable confirm the sensory experience. Yet these particular experiences correlated to certain verbal descriptors including smoothness or roughness.
2016-01-11
Article
The 2016 Prius is longer, lower, and wider, and special attention was paid to the gasoline portion of the car’s gasoline-electric drivetrain with a claimed 40% thermodynamic efficiency for the Atkinson cycle 2ZR-FXE 1.8-L I4 naturally aspirated gasoline engine, a number that rivals turbodiesels.
2016-01-06
Article
The tightening links between autos and consumer electronics were in evidence at the Consumer Electronics Show as several automakers and suppliers unveiled infotainment technologies. Connectivity and simplified app integration technologies were among the many transportation offerings at the monstrous show.
2015-12-03
Article
The SUV continues to win customers and a compact sport utility may be the ideal package. In this episode of SAE Eye on Engineering, Senior Editor Lindsay Brooke looks at the top sellers in the compact SUV boom. 
2015-11-02
Article
The knock on fusion power is that “It is the energy source of the future, and it always will be.” It has seemed like the same criticism could be levied against fuel cell vehicles, as their seemingly magical ability to turn stored hydrogen and atmospheric oxygen into motive power for personal transportation — with only water as a by-product emission —has remained tantalizingly out of reach for decades.
2015-10-06
Article
Mike Sweers, Chief Engineer of the Toyota Tacoma and Tundra, spoke with Automotive Engineering at a recent Tacoma launch event about its development program and truck trends in general.
2015-09-11
Article
Toyota's hybrid "set the global benchmark for hybrids, but now is breaking its own boundaries with more engaging style and fun-to-drive dynamics,” said Bill Fay, Group Vice President and General Manager, Toyota.
2015-09-03
Article
It’s widely predicted that vehicle-to-vehicle communications technology will be required on all vehicles due to its significant role in improving safety. These transmissions are mainly for safety, but the wealth of real-time information will undoubtedly be useful for something else.
2015-07-01
Article
All-new lightweight composite bodyshell, supercharged 336-kW (450-hp) V6 engine, and an open cockpit without windshield or doors—that's Lotus's no-nonsense 3-Eleven, its quickest production model to date.
2015-04-28
Article
FCEV advocates point to new stack platforms with greater power density, and manufacturing strategies aimed at building production scale.
2015-04-21
Article
Although 30% of traffic fatalities are alcohol-related, and electronic Driver Alcohol Detection System for Safety has appeal, more targeted approaches to reducing them are being taken by car makers. Programs aimed at reducing teen driver accidents and death were described at the 25th annual World Traffic Safety Symposium during the New York Auto Show.
2015-02-19
Article
Despite the drop in U.S. gas prices, the development of gas-saving hybrid and electric vehicles marches on. In this episode of SAE Eye on Engineering, Senior Editor Lindsay Brooke looks at the auto industry's continued focus on electrification.
2015-01-20
Article
GS-F is Lexus' newest sports sedan in its F lineup. The vehicle also features innovative torque vectoring differential with three modes, shock absorbers that have underhood manual-turn firmness adjustment, and bright orange 6-piston front calipers as an external styling performance treatment.
2015-01-06
Article
Toyota announced at CES that it will grant royalty-free use of all 5680 of its solely owned fuel-cell patents, including those pending from development of the first hydrogen fuel-cell production vehicle, the Toyota Mirai.
2014-12-18
Article
For the third time in a little more than a year, Toyota has announced an expansion of its Southeast Michigan R&D campuses. The most recent announcement involves an investment of $126 million for the expansion of powertrain operations at its Ann Arbor campus and the consolidation of vehicle development operations at a new facility on its York Township facility.
2014-12-11
Article
Are smaller pickup trucks about to make a big comeback? In this week's SAE Eye on Engineering, Senior Editor Lindsay Brooke examines the current midsize pickup market, and looks at what's still to come. 
2014-12-03
Article
At the recent 2014 L.A. Auto Show, various OEMs put their latest hydrogen fuel-cell electric vehicles on stage. Engineers developing FCEVs are working against overlapping regulatory clocks, and OEM collaborations are taking the some of the sting out of development time and costs.
2014-12-02
Article
Toyota today called for a coordinated industry-wide joint initiative to independently test Takata airbag inflators that have been the subject of recent recalls by several automakers. "By combining our collective efforts behind a coordinated, comprehensive testing program, we believe we can achieve greater results.
2014-11-18
Article
Market success of the new fuel-cell sedan depends to a large extent on steady installation of hydrogen fueling stations worldwide.
2014-11-05
Article
Connected vehicles bring many benefits, helping both drivers and traffic managers. However, it can be difficult for traffic managers to analyze and use the enormous amounts of data collected when every vehicle constantly transmits speed, direction, and other data points. That’s prompting many groups to see how big data schemes can be adapted for the transportation industry.
2014-10-24
Article
Connectivity brings many benefits for vehicle owners, but it creates many challenges for engineers. Security is perhaps the most difficult since stopping hackers is an ongoing task.
2014-10-07
Article
The crossover concept is an important vehicle for Toyota, demonstrating the Japanese automaker's desire for more "engaging" design—a key attribute particularly in the highly competitive European C-segment market.
2014-09-08
Article
Additional $35 million will fund the company’s unique research center an additional five years, concentrating on a ‘safe transition’ to future of automated and connected vehicle technologies.
2014-09-04
Article
Toyota announced on Sept. 4th that it will pump $35 million into its Collaborative Safety Research Center (CSRC) in Ann Arbor, MI, to focus on safety technologies related to connected- and automated-vehicle technologies. 
2014-06-04
Article
Toyota moves toward silicon carbide-based semiconductors to boost efficiency.
2014-04-17
Article
The body of the U.S. market's best-selling sedan is almost all-new, with atypically aggressive front treatment. Toyota expects the car, which comes to market as 2015 model in the Fall, to carry a Top Safety Pick + rating from Insurance Institute for Highway Safety, along with a NHTSA 5-star rating.
2014-04-15
Article
Toyota Technical Center (TTC) recently named Monte Kaehr to the position of American Chief Engineer, with responsibility for the Camry. He is only the fifth person to attain the title of American Chief Engineer at TTC, a division of Toyota Motor Engineering & Manufacturing, N.A.
2014-04-01
Article
Toyota's new all-wheel-drive TS040 Hybrid Le Mans racer matches a 520-PS gasoline V8 with 480 PS of hybrid-electric assist for a total 1000 PS available from all four wheels under acceleration.
2014-04-01
Technical Paper
2014-01-1670
Shigenori Ichinose, Kiyoshi Iwade, Yoshiharu Hata
Abstract The oil flow in the oil ring groove was observed in order to improve the oil ejection efficiency in the oil ring groove. The oil flow was visualized with a clear head piston using fluorescing agent and particles under motoring condition. The influences of oil ring specification on the direction and the velocity of the oil flow were evaluated. The velocity of the oil ring with oil vent holes was faster than that of the oil ring without oil vent holes. In the case of the oil ring with vent holes, the reverse flow of the oil toward the front side was observed in the back clearance. Therefore, oil vent holes can change the oil flow and improve the oil ejection efficiency in the oil ring groove.
Viewing 1 to 30 of 138

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