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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 FT-1 Concept presents a future we want to live in [w/videos]

Toyota has brought its A game to the 2014 Detroit Auto Show, showing off the striking FT-1 Concept. Short for "Future Toyota," the FT-1 is, we're imagining, the supposed Supra Concept we reported on early in December.
Penned by the Calty Design Research team, the FT-1 draws inspirations from the FT-HS and the Lexus LF-LC concepts from 2007 and 2012, respectively. We certainly see a bit of Lexus LF-A in the design, while there's more than a hint of Formula One in the FT-1's pointed nose.
"Our team was heavily influenced by Toyota's sports car past, especially Celica and Supra, and we sought to capture some of that history. It is an aggressive, track-focused sports car concept with a presence that has been amplified for shock and awe," said Alex Shen, Calty's Studio Chief Designer.

Toyota will steer clear of driverless cars

Toyota executives say the company's primary focus is on safety. At least for the time being, that means the company won't pursue development of a driverless car.
Speaking at the company's advanced safety seminar in Ypsilanti, MI, Thursday morning, Seigo Kuzumaki, Toyota's deputy chief safety technology officer, said that Toyota envisions a future driving environment that optimizes the best of both humans and computers, not choosing one over the other.
"Toyota's main objective is safety, so it will not be developing a driverless car." - Seigo Kuzumaki