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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 recalling 800k Camry, Avalon and Venza models for AC issue

Toyota has announced plans to voluntarily recall 803,000 vehicles from model years 2012 and 2013, over concerns with the air conditioning condenser housing. The recall covers the Camry, Camry Hybrid, Avalon, Avalon Hybrid and Venza, although the exact split between affected models wasn't available.
According to Toyota, the condenser can leak onto an airbag control module, which in turn could cause a short circuit. In most cases, this will just lead to an airbag warning light, but in rarer instances, the airbags could fail to deploy or pop out of their own accord. There's also a concern over a loss of power steering if the airbag control module develops a short.
It's unclear if there have been any injuries or crashes relating to the defects. Toyota will begin informing owners of affected vehicles via first class mail, and will ask them to report to dealerships for recall work, involving the installation of a cover on the condenser housing.

Submit your questions for Autoblog Podcast #319 LIVE!

We record Autoblog Podcast #319 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
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