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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.

Autoblog Podcast #318

Toyota back on top, Barrett Jackson, Crowdsourcing your Dodge Dart payments, Nissan and Toyota double down on pickups
Episode #318 of the Autoblog Podcast is here, and this week, Dan Roth, Zach Bowman and Michael Harley talk about Toyota regaining the No. 1 sales crown, getting your friends and family to buy you a Dodge Dart, Barrett-Jackson, and Toyota and Nissan remaining committed to their pickup trucs. We wrap with your questions, and 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 #318:

Autoblog Minute: UAW and FCA avoid strike, Clarkson teases new show

FCA avoids a worker strike, a former Top Gear host teases us with a picture from Amazon's new car show, and Toyota predicts autonomous cars by 2020. Autoblog senior editor Greg Migliore reports on this edition of Autoblog Minute Weekly Recap. Show full video transcript text [00:00:00] FCA avoids a worker strike, a former Top Gear host teases us with a picture from Amazon's new car show, and Toyota predicts autonomous cars by 2020. I'm senior editor Greg Migliore and this is your Autoblog Minute Weekly Recap. A UAW strike of FCA was avoided thanks to a zero-hour tentative agreement reached this week. Worker concerns that were renegotiated in the new [00:00:30] deal include adjustments to the two-tier wage scale, health care costs, and production outsourcing. Now check-in with Autoblog as we update our reports on this evolving story. Shooting began on Amazon Prime's new automotive show starring the former Top Gear crew. That's Jeremy Clarkson, Richard Hammond, and James May. Now Clarkson threw out a tweet from day one of filming on location at Algarve Motor Park in Portugal. The picture features the show's [00:01:00] three stars and crew posing with the holy trinity of hyper cars. That's a McLaren P1, a Ferrari LaFerrari, and a Porsche 918 Spyder. This Prime show is being called Gear Knobs though the name is unofficial. Now if a tweet is any indication of what we can expect, who cares what it's called this is gonna be awesome. (Eds Note: Clarkson tweeted Friday that the show will not be called Gear Knobs.) Toyota predicts drivers could be obsolete on highways as early as 2020, with technology dubbed the Toyota Highway Teammate or THT. Toyota is using a modified [00:01:30] Lexus GS to show what this is capable of. THT is already able to create a driverless freeway car that's capable of changing lanes, making passes and taking curves. Plus, it can keep safe distances from other vehicles. Toyota is currently testing this on Tokyo's Shuto Expressway. Those are the highlights from the week that was. Be sure to check out my full recap this Saturday. And I'll have some added insight on the BMW M4 GTS. For Autoblog, I'm Greg Migliore. [00:02:00] Show Logo Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals.