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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.

24 Hours of Le Mans live update part one

We tasked surfing journalist Rory Parker to watch this year's live stream of the 2016 24 Hours of Le Mans. What follows is an experiment to experience the world's greatest endurance race from the perspective of a motorsports novice with a profanity-laden stream-of-consciousness writing style. Parker lives in Hawaii and spends far more time spearfishing than behind the wheel of a car. Jump ahead to Part Two here, and Part Three here. Big Money and billionaire hobbyists and rockets on wheels. Jets belching French color smoke overhead. Balance of power fuckery. Plenty of water on the ground this morning. Absurdly expensive motorcars lined up in the pissing rain. Fast twitch lunatics behind the wheel. Chomping at the bit. Let's go let's go let's go! Race hasn't even started, Ford #67 maybe dealing with clutch issues. Karma? That beautiful bastard Brad Pitt's out on the track, waving the tricolor flag. It's a standing start in "Noah's Ark" weather and the 2016 24 hours of Le Mans is go! First lap takes place behind the safety car, finished in a record setting 8 minutes 27 seconds. Wrong kind of record maybe, but this is the first time I've set my mind to watching the whole damn race. Feel like I'm part of history. 3:00 AM on Kauai, a little too early for life. Sucking down coffee like a maniac. Don't fall back asleep. Got my hands on four hours of rest, how much more can I need? Better be enough for the next twenty four hours. Gonna get kinda punchy toward the end. Jason Statham on the scene. Four feet of solid muscle, non-existent hairline. Lovely wife peanut gallery sitting next to me calls him the "best race car drive in the world." Not sure if she's serious. Toss up, could go either way. Statham's a funny guy. Heir to the Bruce Willis comedy action crown. Really good in the movie where the fat comedy lady plays a spy. Ford's on the road. Problems with gearbox pressure, apparently. Nearing a half hour in and the safety car is still on the track. Hellish amounts of water on the ground, in the air. Visibility is garbage. Getting better. Twitter wags, "Not with a bang but a whimper." Just building suspense. Mother Nature felt like killing some people today, race officials need to dial back the drivers until it dries a tad. Normal inclination would've seen 'em flying, guaranteed early lap wrecks. Sad news for that bloodthirsty part of my lizard brain I try and keep suppressed. Good news for humanity. #12 in the pit for a bit.

Toyota's Bob Carter says far fewer stations needed in shift from gas to hydrogen

Toyota's Bob Carter has been talking about green cars for years, but it's only been recently that his comments have really caught widespread attention thanks to his disparaging remarks about electric vehicle supporters like Elon Musk and Carlos Ghosn and optimism about hydrogen. Speaking at the opening of the Chicago Auto Show this morning, Carter said that Toyota has claimed the "pole position on CAFE," thanks to its deep hybrid bench. The company's green car cred will continue to grow because of its upcoming hydrogen fuel cell car, due out next year. Carter is relentlessly optimistic: "I truly believe fuel cells will fundamentally change how we feel about transportation," he said. The reason, Carter said, is that a hydrogen infrastructure will be easier to install than people think. He referenced a study conducted by the University of California (which we've heard about before) that found that California would only need 68 hydrogen stations to refuel the roughly 10,000 H2 vehicles that Toyota hopes to sell in by 2016 or so. That's a lot more than the nine that exist today, but the state has already approved funding for 20 new stations by 2015 and then up to 100 by 2024. Then he said this: "If every vehicle in California ran on hydrogen, we could meet refueling logistics with only 15 percent of the nearly 10,000 gasoline stations currently operating in the state." "We could meet refueling logistics with only 15 percent of gasoline stations currently operating in CA" - Bob Carter This made us wonder: if the refueling time and range are roughly equivalent between hydrogen and gasoline – Toyota's hydrogen car is supposed to be able to go 300 miles on a five-minute fill-up - then why has the market decided that there should be 10,000 gas stations in California and why would 1,500 be sufficient for hydrogen? "If the locations are optimized," he said, "we don't need 10,000 stations." For example, at major intersections, instead of three gas stations, you'd really just need a single hydrogen one. "There are a lot of questions about the infrastructure, but it's coming. ... It's a hurdle that we've got to climb but it's not as steep as some may imagine." Toyota's Mike Michaels, the national manager, media and public affairs at Toyota Motor Sales, then stepped in to point out that there are gas stations closing and admitted that there might be too many gas stations in California.