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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.

BMW M850i Coupe, Jeep Wrangler Rubicon and a 1996 Toyota Land Cruiser | Autoblog Podcast #585

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor Alex Kierstein and Senior Editor, Green, John Snyder. This week, they talk about driving the BMW 8 Series Coupe, Jeep Wrangler Rubicon and Toyota Corolla Hatchback. Then they talk about the news, including electric Hummer rumors and Tesla pickup timing. Finally, they consider whether or not Greg should buy his neighbor's 1996 Toyota Land Cruiser. Autoblog Podcast #585 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving: BMW M850i xDrive Coupe Jeep Wrangler Rubicon Toyota Corolla Hatchback In the news: Is an all-electric Hummer in the works? Tesla pickup truck is on its way Spend My Money: 1996 Toyota Land Cruiser Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video:

Toyota reaches $1.2B unintended acceleration settlement in criminal probe

UPDATE: Just like that, Toyota has released an official statement confirming its $1.2-million dollar settlement with the US Attorney's Office. Our story has been updated to reflect this development and the automaker's official statement has been added below.
Toyota has reached a settlement over the criminal probe into its unintended acceleration problems, and the outcome is more expensive than first expected. The Japanese automaker has agreed to pay $1.2 billion to close the investigation among other settlement terms. The criminal inquiry focused on whether the company kept information from regulators and how it handled drivers' complaints about the problems, according to the sources.
Between 2009 and 2010, Toyota ended up recalling over 10 million vehicles worldwide over sudden acceleration fears. Fixes include modifying floor mats, gas pedals, and installing brake override software on affected models. In addition, Toyota made the latter standard on all of its new vehicles.