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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 NA CEO says his excitement for hydrogen sedan is rising

Toyota has an undeniable vested interest in seeing its hydrogen sedan succeed when it goes on sale in the US next year, so it's no surprise that the company's North American CEO, Jim Lentz, says that he's got more hope for the car now than ever before. And if we remember ways that others in the company, like Bob Carter, have loudly sung hydrogen's praises, we have to assume that positivity is running awful high in Torrance. In fact, Lentz said that the US side of the company is far more excited by the H2 car than colleagues in Japan. Speaking at The Wall Street Journal's ECO:nomics conference in Santa Barbara, CA this week, Lentz said: After we've seen the product, understand its range, its driving dynamics, its refueling, we're a lot more bullish than Japan - probably about fivefold more bullish. It's just a question of how many can be produced now. Well, we've driven this car, and we still feel that Toyota is placing a big bet on the technology. One important issue is cost, but Lentz would not say exactly how much the car costs to make or what it will be priced at. He did say, though, that the production cost has dropped by 95 percent from the $1 million price tag the car wore ten years ago. That hints at a production cost of around $50,000. Lentz also said he thinks it will take at least a decade for hydrogen vehicles to hit sales of 500,000 per year in the US. Speaking to Bloomberg, he said: Their acceptance could get off to a quicker start than the hybrids did. I think you're going to see a lot more marketing of the concept of fuel cell much sooner than you did for hybrids, because basically the whole industry is behind it.

Major automakers urge Trump not to freeze fuel economy targets

WASHINGTON — Major automakers are telling the Trump administration they want to reach an agreement with California to avoid a legal battle over fuel efficiency standards, and they support continued increases in mileage standards through 2025. "We support standards that increase year over year that also are consistent with marketplace realities," Mitch Bainwol, chief executive of the Alliance of Automobile Manufacturers, a trade group representing major automakers, will tell a U.S. House of Representatives panel on Tuesday, according to written testimony released on Monday. The Trump administration is weighing how to revise fuel economy standards through at least the 2025 model year, and one option is to propose freezing the standards through 2026, effectively allowing automakers to delay investments in technology to cut greenhouse gas emissions from burning petroleum. The National Highway Traffic Safety Administration has not formally submitted its joint proposal with the Environmental Protection Agency to the White House Office of Management and Budget for review. Even so, last week, California and 16 other states sued to challenge the Trump administration's decision to revise U.S. vehicle rules. Auto industry executives have held meetings with the Trump administration for months and have urged the administration to try to reach a deal with California even as they support slowing the pace of reduction in carbon dioxide emissions that the Obama administration rules outlined. One automaker official said part of the message to President Donald Trump at a meeting on Friday will be to consider California like a foreign trade deal that needs to be renegotiated. Automakers want to urge him to get automakers a "better deal" — as opposed to potentially years of litigation between major states and federal regulators. On Friday, Trump is set to meet with the chief executives of General Motors, Ford, Fiat Chrysler and the top U.S. executives of at least five other major automakers, including Toyota, Volkswagen AG and Daimler AG, to talk about revisions to the vehicle rules. Senior EPA and Transportation Department officials will also attend. Environmental groups are eager to keep the rules in place, saying they will save consumers billions in fuel costs. A coalition of groups plans to stage a protest outside Ford's headquarters in Michigan.