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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.

Lexus eschews production in China over quality concerns

One of the more popular trends in the auto industry is setting up production operations in China. Mainstream manufacturers like Ford, General Motors and Volkswagen have done it, and even luxury marques like Audi, BMW and Mercedes-Benz have or will soon have manufacturing ops in the People's Republic.
One company that isn't building cars in China, though, is Lexus. The Toyota-owned luxury brand still manufactures all of its vehicles in Japan (aside from a few RXs, which are built at a Toyota factory in Canada). According to Tokuo Fukuichi, Lexus just isn't ready to build cars there yet.
"The German Three have a brand image that they have cultivated over the past century in their long history, but Lexus is not in people's minds like that yet," Fukuichi-san told Reuters UK.

Camatte concept puts the Toy back in Toyota [w/videos]

It's been two years since Toyota first revealed its Camatte show car at the Tokyo Toy Show. Though sadly never destined for production, Toyota brought the concept back the following year as the Camatte 57s roadster, and is now returning to the same show with yet another take on the kid-friendly, configurable 1+2 with interchangeable body panels - this time with a slew of features that are fresh not only to the concept itself, but to the industry altogether.
This year the Camatte is being showcased in two forms: a bare chassis in the Tech Lab that lets kids see the inner workings of a modern automobile, and another in the Design Lab that lets kids draw their own motif for the concept that is then displayed on an LED hood.
The overall approach reminds us of the way Toyota's budget brand Daihatsu unveiled the Kopen roadster concept at the Tokyo Motor Show late last year, only even more kid-focused and decidedly more light-hearted than you might otherwise expect from one of the largest industrial giants in the world, and could only have been made for a toy exposition. In Japan. Which would explain the ridiculously upbeat videos below, where you'll also find the brief press release.