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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.

US Congress lets $8,000 hydrogen vehicle tax credit expire

When Toyota introduced the 2016 Mirai last month in preparation for a launch late next year, it said that the hydrogen car will have a $57,500 MSRP and that there will be a federal tax credit available worth up to $8,000. The problem, as we noted at the time, is that that federal credit was set to expire at the end of 2014. The technical language of the current rule says that someone who buys a fuel cell vehicle, "may claim a credit for the certified amount for a fuel cell vehicle if it is placed in service by the taxpayer after Dec. 31, 2005, and is purchased on or before Dec. 31, 2014." With the 113th Congress now finished up for the year and legislators headed home for the holidays, we know one thing for certain: the federal tax credit for hydrogen vehicles was not updated and will end as we're all singing Auld Lang Syne next week. All of this isn't to say that Mirai buyers won't be able to take $8,000 off the price of the car 12 months from now. For proof of that, we only need to look at other alternative fuel tax incentives and realize that this Congress simply isn't moving fast enough to deal with things that are expiring right now. One of the last things that the 113th Congress did in December was to take up the tax credits that expired at the end of 2013 and renew some of them. Jay Friedland, Plug In America's senior policy advisor, told AutoblogGreen that PIA and other likeminded organizations worked with Congress to extended the electronic vehicle charging station (technically: EVSE) tax credit that was part of the Alternative Refueling Tax Credit in IRS Section 30(C) through the end of 2014. "Individuals can deduct 30 percent of the cost of purchasing and installing an EVSE up to $1,000; businesses, 30 percent up to $30,000," he said. "This tax credit is applied to any system placed into service by 12/31/14 and is retroactive to the beginning of the year. So go out and buy your favorite EV driver an EVSE for the holidays," he said. An electric motorcycle credit was killed at the last minute as Congress was getting ready to leave, but H.R. 5771 did extend the Alternative Fuels Excise Tax Credits for liquefied hydrogen and other alternative fuels. These sorts of tax credit battles happen all year long. In July, Blumenthal introduced the Fuel Cell and Hydrogen Infrastructure Act of 2014, which never got out of the Finance Committee. Back to the hydrogen vehicle situation.

Toyota wants half its vehicles in Japan to be hybrids

The Toyota Mirai hydrogen fuel cell vehicle could signal the future of motoring with a somewhat accessible price and cutting-edge green technology, but there's no guarantee for the model actually spearheading a revolution in the marketplace. In the meantime, the Japanese brand is continuing to focus on its hybrid powertrains and actually plans to build even more of them. As soon as next year, half of Toyota's sales in Japan could be electrically assisted. According to the Nikkei Asian Review, Toyota is pushing to sell 760,000 hybrids in Japan in 2016, compared to 684,000 last year. That figure would account for half of the company's sales in that country, and the company plans to increase overall production of its gas-electric models. The automaker could build 1.32 million of them next year, which would be about 30 percent more than in 2014. There's actually a financial incentive for Toyota to try this green strategy. Japan's rules for tax breaks on efficient models are about to get more stringent. According to the Nikkei Asian Review, only about half of all new models are expected to meet the guidelines for the incentives, compared to over 80 percent now, and the change could cost buyers as much as 100,000 yen ($840) more. With the impending debut of the next-gen Prius and heightened hybrid production, Toyota can position itself as an attractive choice to customers. News Source: Nikkei Asian Review via Green Car CongressImage Credit: Kazuhiro Nogi / AFP / Getty Images Green Plants/Manufacturing Toyota Hybrid