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Toyota R&D shows off free piston engine linear generator for future EVs

We often hear how an electric vehicle powertrain architecture allows vehicle designers much more freedom than a traditional ICE powertrain does. With differently shaped battery modules and small electric motors, there are lots of way to put the pieces together. With today's plug-in hybrid technology, engineers still need to put a decent-sized ICE somewhere, but new technology from Toyota could free up the gas-electric vehicle designers of the future. Presented at the recent SAE World Congress in Detroit, the idea from Toyota Central R&D Labs Inc. and involves what is called a Free Piston Engine Linear Generator (FPEG). Think of it as a sort of one-cylinder, two-stroke mini-engine that can work either as a generator (thank to magnets and a linear coil) or to directly drive a vehicle. The current prototype is a 10-kW unit that Toyota say would provide enough power to get a B- or C-segment electric vehicle up to highway speeds (75 miles per hour) when paired up to offer 20 kW. Pairing the FPEGs is also important to minimize vibrations. One system tested by Toyota had a 42 percent thermal efficiency, but the engineers are working to improve the overall efficiency even further. You can watch an animated video of the piston in action here (click on "Outline") and see the SAE papers here and here. More technical details are available at Green Car Congress. News Source: Toyota Labs via Green Car CongressTip: Thanks, Joe V. Green Misc. Auto Shows Toyota Technology Emerging Technologies Electric generator

Hyundai Prius-fighting hybrid spied wearing new camo

Hyundai's engineers certainly don't want the public to see its upcoming dedicated hybrid model in several of these new spy shots, but the company can't deny that the machine is on the way. These test cars were first spotted last summer as Prius-like five-door hatchbacks. However in these photos and the second set, it would seem that the model has morphed into a more sedan-like shape similar to the Chevy Volt. Unlike the last time we saw this car during arctic testing, the vehicle no longer is covered in plastic concealment. That obfuscation has been replaced with a very effective camo pattern on everything but the roof, and in several photos, workers are actively standing in the way of the spy shooters' lenses. Beyond the whole model's general shape, there are a few details to pick out, though. You can easily spot the outline of the brand's hexagonal grille up front. There appears to be a rather complicated air dam design there, too. In profile, the shape of the rear hatch creates an integrated spoiler at the back. While the camouflage makes it very hard to tell, we don't see a plug-in port on this example. According to our spies, this test car was being driven with a slew of other electrified models, including a BMW i3, Nissan Leaf, Volkswagen e-Golf, and Kia Soul EV. Given that group, perhaps the engineers were specifically benchmarking the electric performance for this outing. Earlier reports suggest that Hyundai's latest hybrid could debut in the second half of 2016. Power reportedly comes from a 1.6-liter four-cylinder with hybrid assistance and a lithium-ion battery. Plug-in and five-door hatchback versions are also rumored.

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.