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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 Prius line may not reach 2013 sales target

2012 was a good year for the Toyota Prius line, the hybrid that started it all moving 236,659 units, being the best-selling model in California for the year and the Prius C (pictured) being deemed the most reliable car of 2012 by Consumer Reports. Then 2013 happened, and gas prices dropped more than expected, and people haven't been buying the little hybrids like they used to.
A report in Bloomberg says Toyota set 250,000 units as the Prius family's sales target for this year, but hits like the double-digit drop in year-on-year performance in February have helped lower 2013 sales by 8.4 percent compared to 2012, making the objective "a challenge" to reach. The declines in Prius sales come even as hybrid sales overall were up in the first couple of months this year, including sales of other Toyota and Lexus hybrids. Jim Lentz, Toyota's North American chief, said the Prius target would be adjusted if necessary.

Toyota C-HR hybrid crossover coupe concept leak ahead of Paris

Last week, Toyota previewed an upcoming concept called the C-HR and promised it would debut at the upcoming Paris Motor Show. It didn't say much more or give us anything beyond a silhouette and the shape of the lights, but here we have the first images of the finalized form.
The C-HR envisions a hybrid crossover coupe with angular styling that looks ready to take on the Nissan Juke. It's far sportier than a RAV4, and looks closer to how we'd imagine the next-generation Scion FR-S would look like if it were riding on a jacked-up suspension - with some show car elements thrown in for good measure, like a gloating roof, radical lighting and the usual absence of door handles and usable wing mirrors.
Of course, this being a Toyota concept, it packs a hybrid powertrain, although specifications did not leak out along with the images. Overall the form looks pretty striking, if decidedly unsubtle. We'll look forward to bringing you more as the Paris show rapidly approaches.