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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.

Takata air bag recall list

The National Highway Traffic Safety Administration confirmed yesterday that 33.8 million vehicles with Takata airbags are going to be recalled. It's the largest recall in automotive history. The already record-breaking rate of automotive recalls this year shows no signs of slowing down, especially since millions of cars with defective airbags made by global supplier Takata are under ongoing scrutiny. The federal government is warning owners that inflator mechanisms in the air bags can rupture, causing metal fragments to fly out when the bags are deployed. The faulty air bags have already been blamed for multiple deaths. How do you know if your vehicle is safe? The National Highway Traffic Safety Administration released an updated list of vehicles under recall. Sometimes however, the government's website will crash and the list may not be complete. Check your VIN at the NHTSA website to make sure. The list of cars affected by the recall has not been released, but seem to span multiple models over the years for many of the automakers.

Lost power in a winter storm? Just hook up a Toyota Prius like this guy did

The Toyota Prius' battery pack just got something like a five-star rating from a truly seasoned professional – a 50-year aircraft technician. Bob Osemlak, who'd served more than three of those five decades with the Canadian Air Force, brought electricity back to his home in December during a heavy ice storm thanks to his gas-electric car. His ingenuity allowed him to turn on lights, furnace, refrigerator and the TV. The Thornhill, Ontario resident lost power for nearly a day on December 21 – not nearly as much as millions of other people hit by the recent storm - and so he still set about using his Prius for backup power, according to EV World. His ingenuity allowed him to turn on lights, furnace, refrigerator and the TV. Being an aircraft technician for so long brought Osemlak the ability to home-brew his V2H set-up that he urges other people to avoid, for safety reasons. He had planned for a potential power outage by installing an outlet on his furnace and, when the storm struck, he ran a cord through the basement window to the car. During the nine hours Osemlak used his Prius for backup power, the car's fuel gauge only reduced less than one bar, or roughly the equivalent of a gallon of gasoline. It wasn't the first time Osemlak had played with his vehicle. In the 1960s, while stationed in Winnepeg, Manitoba, he created a car starter. Every hour, the car would start up and run for 10 minutes to avoid being frozen solid in frigid winter temperatures. Featured Gallery News Source: EV WorldImage Credit: Flickr Green Toyota Green Culture Hybrid PHEV vehicle to grid storm