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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 and Mazda set to expand partnership

Toyota and Mazda are already teaming up for the Scion iA and Mazda2, but that partnership might just be the beginning. Reuters reports the two Japanese companies could expand their work together, with Toyota chipping in its experience with both fuel cells and plug-in-hybrid tech, and Mazda contributing its know-how in regards to its Skyactiv line of engines. The report cites a pair of unnamed sources that are "not authorized to discuss the matter publicly." The move, on the surface, is certainly appealing for both parties. Mazda has very little experience with hybrids (remember the Ford-rebadged Tribute Hybrid?), let alone something as advanced as a fuel-cell vehicle. Teaming with Toyota, arguably the world's greatest hybrid manufacturer, would give it a serious leg up. For the Japanese giant, meanwhile, a partnership with Mazda could expand the economy of scale for the Mirai FCV's tech, while Skyactiv engines would do well in replacing the base engines in cars like the Corolla, Camry, and RAV4. What are your thoughts? Would an expanded partnership between Toyota and Mazda make sense? Can you think of any drawbacks? Have your say in Comments. Featured Gallery 2016 Toyota Mirai View 15 Photos News Source: Reuters Green Mazda Toyota Electric Hybrid skyactiv toyota mirai

Sports 800 is a progenitor of Toyota performance

There's an automotive axiom that claims it's more fun to drive a slow car fast, than a fast car slow. If that's the case, then pushing a Toyota Sports 800 around must be one of the most exhilarating experiences behind the wheel in the world. With just 800cc of displacement from a two-cylinder boxer engine, the focus is on finesse over outright speed. Still, it's a fantastic page in Toyota's performance history, and Petrolicious takes a ride with a man who owns a meticulously restored 1967 example in its latest video.
The Sports 800 used the classic cost-saving strategy in the auto industry of taking parts from a standard model in the lineup and modifying it into a sports car. In this case that meant borrowing the engine from the plebian Toyota Publica, beefing it up for more power and clothing the whole thing a in beautifully shaped, wind-tunnel-honed body.
The look of these lithe, targa roadsters is the exact opposite of the rather dull styling sometimes associated with Toyota today. Everywhere you look there are louvers, vents or curves to draw the eye. Check out the latest Petrolicious video for a detailed look at the history of this rare model that's largely unknown on this side of the Pacific.