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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 found not at fault in alleged unintended acceleration crash

Toyota has already paid out millions and billions of dollars in settlements surrounding unintended acceleration, but the first lawsuit in the matter, which headed to a California court in July, has reached a verdict. Following the 2009 death of Noriko Uno, whose 2006 Camry was hit by another car and then sped out of control before crashing into a tree, the jury found that Toyota was not at fault in the crash.
Even though the 2006 Camry (shown above) wasn't involved in any of the unintended acceleration-related recalls and it was not equipped with a brake override, Automotive News reports that the jury's verdict says there was no defect in the car and actually blames the entire incident on the driver that ran into Uno's car - to the tune of $10 million. The accident started when the other driver ran a stop sign and hit Uno's car, and the report says that medical conditions (including diabetes) caused Uno to fail to stop her Camry.
The AN article also states that this lawsuit was a bellwether case for around 85 other personal-injury and wrongful-death suits against Toyota, but there are still many impending suits across the country. Scroll down for an official statement on this particular case from Toyota.

Redesigned 2014 Toyota Tundra spied testing in Canada

When Toyota first announced that it would be bringing the 2014 Tundra pickup to next month's Chicago Auto Show, we weren't quite sure if the truck would fall into the "all-new" or "refreshed" category. After seeing this latest set of spy shots, we're striking "all-new" from the record, but the enhancements do appear to be more than just a simple nip/tuck.
While the overall shape and greenhouse haven't really changed, heavy cladding found on the front fascia suggests that a totally redesigned nose is in store, with a fully reworked grille flanked by new headlamps. Smaller styling details are hidden by the big panels of camouflage, but we anticipate a few minor tweaks to the rest of the pickup's design when all that black tape finally comes off.
Mum's the word on powertrain enhancements (if any), as well as any changes that have been made to the chassis. But with the updated 2013 Ram 1500 already on the street, the recent unveiling of the updated 2014 Chevrolet Silverado and GMC Sierra twins, and a preview of what's to come from the likes of Ford, we certainly hope Toyota has injected enough new blood into its 2014 model year pickup to keep it competitive in this American-dominated segment. We'll know for sure come Chicago.