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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

Toyota asking NHTSA for waiver on 206K vehicles

Toyota has filed a petition with the National Highway Traffic Safety Administration asking for a waiver to avoid recalling about 206,271 2012-2014 Camry, Avalon, Corolla, Sienna, Tundra and Tacoma vehicles, some of its most popular models. The affected vehicles contain seat heaters that might not meet government flammability standards. Toyota says in the waiver that "the chance of fire or flame induced by a malfunctioning seat heater is essentially zero," according to The Detroit News. The automaker notes the part makes up less than one percent of the seat's weight.
Initial reports of the problem arose in late January when Toyota issued a stop-sale order for 2013 and 2014 model year versions of those vehicles. The automaker says that there have no been reports of fires or injuries in the affected cars, and the problem was discovered during testing by the South Korean government, according to The Detroit News.
We've reached out to Toyota for comment on this development and are awaiting a reply. We'll update this post if and when we hear back.

Ex-Toyota Bill Reinert still in favor of hybrids, against EVs

Former Toyota executive Bill Reinert is so unsold on electric vehicles as a viable advanced-powertrain option for future transportation that he has praised – gasp – Ford, for its downsized internal combustion engines. Reinert was a key player in developing Toyota's original Prius hybrid and, in an interview published in Yale University's Environment 360 blog, said a hybrid that gets 60 miles per gallon is superior to an electric vehicle. "And that is why you will be seeing more fuel cells in the future." – Bill Reinert Reinert went on to praise the advances that automakers have made in improving fuel economy of fossil fuel vehicles, specifically namechecking Ford and its three-cylinder Ecoboost engine. He also has good things to say about both hydrogen fuel-cell electric technology as well as natural gas vehicles, but admits that limited fueling infrastructure will keep those types of vehicles in the margins for the near future. He also says that hydrogen vehicles aren't that great yet but that, "When most [manufacturers] investigate the two technologies [H2 and EVs], they see that FVCs offer more room for performance improvement and cost reduction potential. And that is why you will be seeing more fuel cells in the future." As far as pure electric, Reinert says lithium-ion batteries have "tremendous shortcomings" and talks about battery degradation, substandard performance in hot weather and, of course, limited single-charge driving range. He also says that people need to factor in the environmental impact of producing electricity for the grid to fully gauge how environmentally beneficial EVs can be. We'd like to take him and Tesla Motors Chief Elon Musk to what we think would be a spirited lunch. You can read the whole interview with Reinert here.