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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 will roll out solid-state battery EVs globally in a couple of years

GANDHINAGAR, India — Japan's Toyota Motor will in a couple of years globally launch vehicles with solid-state batteries that charge faster and last longer, an executive said on Thursday at an investment summit in India. Solid-state batteries promise to dramatically improve the driving range of electric vehicles (EVs), a key element of a strategic pivot Toyota unveiled in June to make up ground lost to Tesla and Chinese rivals, such as BYD, in the EV race. Last year, Toyota and oil refiner Idemitsu Kosan said they would tie up to develop and mass produce all-solid-state batteries, which they aim to commercialize in 2027 and 2028, followed by full-scale mass production. "We will be rolling out our electric vehicles with solid state batteries in a couple of years from now," said Vikram Gulati, the India head of Toyota Kirloskar Motor. It "will be a vehicle which will be charging in 10 minutes, giving a range of 1,200 kms (750 miles) and life expectancy will be very good". Gulati was speaking at the Vibrant Gujarat Global Summit where one focus of the Indian government is attracting more investments to scale up EV manufacturing capacity in the world's third largest auto market. At the start of the summit on Wednesday, Japan's Suzuki Motor said its Indian subsidiary and Toyota partner Maruti Suzuki would export the group's first battery EV to Japan and Europe — marking the first time for Maruti to export to its parent company's home country. Electric models made up around 2% of India's car sales last year, but the government is targeting 30% by 2030 and India's road transport minister said at the summit he sees annual EV sales in India reaching 10 million vehicles by 2030. On Toyota's plans for solid-state batteries in India, Gulati said the carmaker had various sustainable technology options that would differ based on the country, market and customer preferences. "Right now, for India, flex fuel and ethanol can be a no-brainer right away," he added India's trade department has backed lowering taxes on hybrid vehicles to help the transition to cleaner energy sources, following demands by Japanese carmakers, Reuters has reported. Gulati said the Indian government should consider a carbon-based tax structure for cars, which would make it technologically agnostic and more equitable.  Green Lexus Suzuki Toyota Electric

Toyota's Euro Aygo spied in prototype form

The five-door version of the next-generation Toyota Aygo, a Euro offering cloned by the Peugeot 107 and Citroën C1, has been caught out on the town wearing all black. Facelifted early last year, predictions are that the next version of the city car will be slightly lower and wider than the current car, with improved ergonomics and materials. Based on what little can be seen for now, a new intake and headlight treatment should be on the menu in front, with taillights placed higher on its backside.
A three-door version is expected, but a gasoline-hybrid model is also rumored, along with power and fuel economy improvements to the three-cylinder engine that presently puts out 67 horsepower and 69 pound-feet of torque.
We should see it next year, along with the new Citroën C1 and Peugeot 108.