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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 says fuel cells could cost no more than diesels soon

Toyota wants to bring the cost of hydrogen fuel-cell vehicles down to something along the lines of a diesel vehicle's price tag. It just might take until the alliterative year of 2022 to hit that target. Such is the challenge of modern engineering. Fuel-cell vehicle costs may eventually approach diesel vehicle costs because of the relatively expensive process of both making a diesel engine and including it with particulate filters and other treatments required to reduce the soot once associated with such engines, Automotive News says, citing comments from Toyota executive Katsuhiko Hirose. And, while engineers initially estimated that fuel cells and diesels would reach price parity in about 15 years, Hirose said Toyota higher ups weren't satisfied with that answer and think the timeframe could be cut in half. The Japanese automaker in January said it would ramp up the manufacturing rate of its first production fuel-cell vehicle, the Mirai, to about 700 units this year and to 2,000 vehicles for 2016. Later this year, Toyota will start selling the Mirai in the US for either $57,500 as a purchase or $499-a-month lease, and both options come with free hydrogen. Who can say that about diesel fuel? Related Videos:

Toyota launches updated Yaris in Europe, Vitz in Japan [w/videos]

Toyota first launched the Yaris in 1999, though that model was sold in the North America as the Echo. The second generation arrived in 2005, replaced by the third in 2011. Sometime next year, Toyota is expected to roll out a new Yaris for North America, to be built in Mexico on the same platform as the next Mazda2. But before that comes to pass, Toyota has introduced a mild facelift for the Yaris in markets other than ours.
With styling cues borrowed from the new Aygo and the Yaris Hybrid-R concept, the new Yaris (for Europe) and Vitz (for Japan) are distinguished by updated styling front and rear. Though the European model bears a more aggressive look than the JDM version, both feature the new X motif that seems to be the new look for the whole family - particularly for small hatchbacks.
The back end has also been revised to incorporate new LED taillights and a (faux) diffuser in the bumper. The cabin, meanwhile, has been redesigned to feel roomier and quieter with upgraded equipment. The suspension has also been refined, and in Europe at least, Toyota will continue to offer the Yaris with a choice of 1.0- or 1.3-liter gasoline engines, 1.4-liter diesel or hybrid powertrains.