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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.

Legal approach in $1.2 billion Toyota settlement could impact handling of GM recall cases

In the past, if an automaker did something wrong, they were usually prosecuted by the US government through something called the TREAD Act. Short for Transportation Recall Enhancement, Accountability and Documentation Act, it basically requires automakers to report recalls in other countries, along with any and all serious injuries or deaths, to the National Highway Traffic Safety Administration.
Failing to report or attempting to conceal anything when there's been a death or serious injury constitutes a criminal liability. The idea is that this setup puts the onus on manufacturers to keep NHTSA apprised of safety related issues before they become a problem in the US, thereby allowing the regulator to better protect consumers.
In theory, it sounds like a relatively airtight set of rules for dealing with misbehaving automakers. That didn't stop the US Department of Justice from ignoring TREAD in its prosecution of Toyota's handling of the unintended acceleration recall, though. The result of this new approach, which charged Toyota with wire fraud, was a $1.2 billion settlement. Now, the wire-fraud approach could be used for the expected case between the US government and General Motors, based on the statements of Attorney General Eric Holder, who specifically mentioned "similarly situated companies" when discussing Toyota.

Toyota gives dealers permission to drop Scion, shows them FR-S droptop, Juke rival first

We recently heard that Toyota could be looking to shrink its network of Scion dealerships, and now Automotive News is reporting that the automaker has officially given its dealers the green light to dump Scion without any penalties. Currently, Scion has about 1,000 dealers, yet our report from August 8 quotes an industry analyst as suggesting a healthier figure would be between 350 and 500 outlets. But before its current dealers make a decision on whether or not to get rid of the youth-oriented brand, Toyota also showed off a couple potential future products in the pipeline.
The FT-86 Open Concept shown above was revealed back in March at the Geneva Motor Show, and AN says that an FR-S convertible was driven on stage at a recent national Toyota dealer meeting in Atlanta. There has still been no definitive word one way or another as to whether the droptop model will be built, but it could be a good way to follow up to the popular FR-S coupe. Another possible future product is a subcompact crossover, which was shown in drawing form at the meeting, presumably aimed at small CUVs like the Nissan Juke and the upcoming Honda CUV based on the Fit, a model recently previewed by the automaker's Urban SUV concept.