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Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.

Toyota develops new pre-collision system with steering assist

A number of automakers are working on developing fully autonomous cars, but it looks like the groundwork for such technologies will likely show up first as semi-autonomous systems for both safety and convenience. Following recent announcements from Nissan and Ford in this area, Toyota has now released information for some of its advanced semi-autonomous technologies that could be offered in production cars over the next few years.
On the safety front, Toyota's new pre-collision system with pedestrian-avoidance steering assist is aimed at protecting the folks who aren't in the car. This system combines visual and audible alerts with automatic brake assist and automatic steering. If warnings don't get the driver to slow down, the brake assist kicks in if a collision is very likely, but if that is still not able to avoid the impending collision (and if there is enough room to do so), the car can automatically steer itself around the pedestrian. This sounds most beneficial for last-second dangers such as a person accidently stepping out into the road in front of a car. Toyota hopes to have this technology available to customers by 2015.
The Japanese automaker is also testing a suite of technologies called Automated Highway Driving Assist (AHDA). The key part of this is a new adaptive cruise control system that uses vehicle-to-vehicle (V2V) communications rather than a radar-based system. This cooperative-adaptive cruise control allows vehicles to communicate their acceleration and deceleration data with other cars, which Toyota says this helps to improve fuel efficiency and traffic flow. Also a part of AHDA is the Lane Trace Control feature, which sounds like a next-gen lane keep assist. This system uses cameras, radar and a computer to keep the vehicle in a "smooth driving line" by being able to change steering angle, engine torque and braking force. Toyota says this technology could be in place by the "mid-2010s."

Toyota, Mazda get an Alabama welcome for $1.6 billion plant

MONTGOMERY, Ala. — Toyota and Mazda confirmed Wednesday they will build a $1.6 billion joint venture assembly plant in Alabama that will employ up to 4,000 workers, a boost for President Donald Trump who wants automakers to expand U.S. production. Toyota President Akio Toyoda and Mazda President and Chief Executive Officer Masamichi Kogai joined Alabama Gov. Kay Ivey in Montgomery at an event to confirm the decision. "Welcome to sweet home Alabama," Ivey said to the two executives, after saying that the anticipated 4,000 workers at the plant to be built in Huntsville would earn an average of $50,000 a year. The plant will produce 300,000 vehicles a year and should open on a 2,500-acre former cotton field in 2021, about 14 miles from Toyota's engine plant in Huntsville. Toyota plans to build Corolla cars at the plant, while Mazda will build crossover SUVs. "Together, I am confident we will create yet another 'Built in America' success story," Toyoda said. Alabama will provide tax incentives. Officials said the state tax incentives were worth $370 million, but they did not disclose how much the local incentives were worth. Huntsville Mayor Tommy Battle said the plant will "provide jobs for decades to come for Huntsville and Alabama. It vaults Alabama to the top as an industry leader in producing the next generation of cars that will power our nation." Among U.S. states, Alabama is already the fifth largest producer of cars and light trucks. The state has more than 150 major auto suppliers and 57,000 automotive manufacturing jobs. Two decades ago, Alabama spent an estimated $250 million to woo Daimler AG's Mercedes-Benz to put an auto plant in Tuscaloosa, sparking the birth of auto production in the state. In September, Daimler said it would invest $1 billion to expand its Alabama Mercedes-Benz plant to start building electric sport-utility vehicles there from about 2020. Alabama is also home to assembly plants operated by Honda and Hyundai. A Kia assembly plant operates near the Alabama border in Georgia. Mazda and Toyota said they still need approvals and authorization by antitrust agencies for the new joint venture. They announced a capital alliance in August and plans to jointly develop technology for electric vehicles. Trump tweeted in March he wanted "new plants to be built here for cars sold here." Many automakers have announced expansions of facilities or new jobs but no other new U.S. auto plants have been announced. U.S.