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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 brings TRD Griffon GT86 to Goodwood [w/video]

In the midst of the 2013 Goodwood Festival of Speed, there's a particularly special Toyota running up the hill. This special entry is a GT86 (the cousin to our Scion FR-S and Subaru BRZ) that's been poked, prodded, and tweaked by the minds at Toyota Racing Development. The result of TRD's fettling is a nearly race-ready car.
Starting with the body, the hood, doors, trunk lid, and wings are all made of carbon fiber. The lightweight treatment doesn't end there, though. The bumpers, fenders, and diffuser all feature carbon-fiber-reinforced plastic, while the windows are now made of polycarbonate plastic.
Under the hood sits the same 2.0-liter boxer engine found in the standard GT86, but its six-speed manual gearbox features a shorter final drive ratio for improved acceleration. The coilover suspension has been firmed up, and a TRD mechanical limited-slip differential replaces the Torsen unit. The TRD Griffon rides on TWS 18-inch wheels and Yokohama Advan tires. To bring proceedings to a stop, TRD has fitted its own mono-block caliper kit, complete with more robust racing pads.

Toyota NA CEO says his excitement for hydrogen sedan is rising

Toyota has an undeniable vested interest in seeing its hydrogen sedan succeed when it goes on sale in the US next year, so it's no surprise that the company's North American CEO, Jim Lentz, says that he's got more hope for the car now than ever before. And if we remember ways that others in the company, like Bob Carter, have loudly sung hydrogen's praises, we have to assume that positivity is running awful high in Torrance. In fact, Lentz said that the US side of the company is far more excited by the H2 car than colleagues in Japan. Speaking at The Wall Street Journal's ECO:nomics conference in Santa Barbara, CA this week, Lentz said: After we've seen the product, understand its range, its driving dynamics, its refueling, we're a lot more bullish than Japan - probably about fivefold more bullish. It's just a question of how many can be produced now. Well, we've driven this car, and we still feel that Toyota is placing a big bet on the technology. One important issue is cost, but Lentz would not say exactly how much the car costs to make or what it will be priced at. He did say, though, that the production cost has dropped by 95 percent from the $1 million price tag the car wore ten years ago. That hints at a production cost of around $50,000. Lentz also said he thinks it will take at least a decade for hydrogen vehicles to hit sales of 500,000 per year in the US. Speaking to Bloomberg, he said: Their acceptance could get off to a quicker start than the hybrids did. I think you're going to see a lot more marketing of the concept of fuel cell much sooner than you did for hybrids, because basically the whole industry is behind it.