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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 fills in details about its future design direction and global platform

"In the future, out of 100 customers, we want to excite ten of them instead of not offending all 100."
Almost all of the details about the Toyota New Group Architecture (TNGA) strategy have come out since the initiative was first reported on in March of this year, but Autoblog did learn a few new things about it on a recent trip to Japan. Probably the second-most important detail is that each new segment platform will be based around a common hip point to create an "optimal driving position architecture."

Toyota reveals new customizable Camatte57s kid-friendly concepts

Toyota plans to follow up last year's kid-friendly Camatte concept with two new versions: the Camatte57s and Camatte57s Sport (right). Like the original Camatte, the two new concepts will make their debut at the International Tokyo Toy Show, which is happening this weekend.
Not much has changed with these two new Camatte models. Like their predecessor, they both feature detachable body panels (the count is up to 57), a 1+2 seating array and reconfigurable pedals that allow children to operate the gas and brakes while Mom or Dad steers. What is new is an open-top roadster design that even eschews doors in favor of easier ingress/egress. They look like something a tourist would rent to get around a Hawaiian island, though we dig the distinct personalities of each model's design.
Both cars are all-electric, though Toyota hasn't provided any other specifications, like what makes the Sport model sporty besides its more aggressive body panels and silver, black and red color scheme. That's just as well, as neither concept, like the original Camatte before them, is street legal.