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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 and Suzuki are looking at an R&D partnership because they admit they're behind

The Chairman of Suzuki Motor Corporation, Osamu Suzuki, and the President of Toyota, Akio Toyoda, have convened at Toyota's Tokyo offices to declare plans to join hands regarding research and development. According to Toyoda, Toyota "hasn't been good at creating alliances," and its partnership with the small carmaker Daihatsu has been the most well-known collaboration so far. Perhaps the comment has a tinge of regret from Toyota and GM's NUMMI days in Fremont, especially as the statement released by Toyota says that "Toyota is conscious of the fact that it may be behind competitors in North America and Europe when it comes to the establishment of standardizations and partnership with other companies." But as different technologies advance at breakneck speed and it is difficult for companies both big and small to stay competitive, let alone ahead of the game, Toyota is accepting the need for collaboration. Toyoda referred to passenger safety, environmental issues, automated driving, and hydrogen technology, all of which are key challenges for any carmaker looking to stay relevant, and all expensive to experiment with. Spreading the cost over more vehicles should help. "We received an offer from Suzuki regarding collaboration possibilities on advanced and future technologies such as in information technology. Suzuki made a frank proposal to us, and in understanding that Toyota is facing the challenges which I had mentioned earlier, we thought that with the relationship between both companies, there is an opportunity for a business partnership to help solve such challenges. As such, we decided to explore such possibilities together," said Toyoda. In the future, Daihatsu will still be Toyota's tool in emerging markets, but now Toyota could have access to Suzuki's small-car know-how. Osamu Suzuki acknowledges that "Suzuki's current business focuses on minivehicles in Japan and India," as Suzuki withdrew from the US and Canada in 2013. A joint effort will help Suzuki remain relevant, and as a manufacturer of predominantly small vehicles it has been focusing on competitive pricing more than cutting edge technology. Related Video:

Autoblog Podcast #317

Mitsubishi Mirage, Toyota thinks of beefing up US production, Marchionne on Alfa, Dart and minivans, Ford Atlas concept, Honda Gear concept
Episode #317 of the Autoblog Podcast is here, and this week, Dan Roth, Jeff Ross and Michael Harley bookend the other podcast topics with a pair from the Montreal Auto Show, the Mitsubishi Mirage and Honda Gear concept, and in between we talk about Toyota building all its US-market cars stateside, Hyundai building a Nurburgring test facility, Sergio Marchionne's latest words about Alfa Romeo, Dodge Dart powertrains and the future of Chrysler vans. Some chatter about the Ford Atlas concept finishes up the meat of the 'cast and then we wrap with your questions. For those of you who hung with us live on our UStream channel, thanks for taking the time. Keep reading for our Q&A module for you to scroll through and follow along, too. Thanks for listening!
Autoblog Podcast #317: