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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 Millions Of Cars Over Multiple Concerns

Toyota Motor Corp. is recalling nearly 1.8 million vehicles in the U.S. for various safety problems, including air bags that may fail to deploy. The Japanese automaker announced the U.S. recall Wednesday as part of a broader recall of 6.39 million vehicles - and 27 Toyota models - globally. In the U.S., the recall includes: - 1.3 million vehicles with faulty electrical connections that could cause the air bags to deactivate. Included are the 2009-2010 Corolla, 2009-2010 Matrix, 2008-2010 Highlander, 2009-2010 Tacoma, 2006-2008 RAV4, 2006-2010 Yaris and 2009-2010 Pontiac Vibe. If the air bags deactivate, they could fail to deploy after a crash. - 472,500 small cars with defective springs in the front seat rails, which could prevent the seats from locking in place. Included are the 2006-2010 Yaris hatchback, 2007-2010 Yaris sedan and the 2008-2010 Scion XD. Toyota said it is currently working on remedies for the problems. Dealers will replace the defective parts for free when replacement parts are available. The Pontiac Vibe, which is made by General Motors Co., is included in the recall because Toyota designed and engineered it for GM when the two companies shared a factory in California. GM says 40,500 Vibes will be recalled, and says GM dealers will make repairs when Toyota sends them the parts. The air bag issue is unrelated to a separate GM recall of 2.6 million vehicles for an ignition switch defect that can also deactivate the air bags. The Vibe isn't included in that recall. Toyota said no injuries or crashes have been reported related to the recalls. By region, the recall affects 2.3 million vehicles in North America, 1.09 million vehicles in Japan and 810,000 vehicles in Europe. Other regions affected by the recall include Africa, South America and the Middle East. The recall is one of Toyota's largest since 2009 and 2010, when the company issued a series of recalls totaling more than 10 million vehicles for various problems including faulty brakes, sticky gas pedals and ill-fitting floor mats. Toyota is under pressure to announce recalls quickly after a U.S. government investigation found it hid information about past defects. Last month, the company agreed to pay $1.2 billion to settle that investigation. It also paid fines totaling $66 million to the U.S. government for delays in reporting unintended acceleration problems.

Toyota to recall 185k cars globally, including Yaris

Toyota has announced it is recalling a total of 185,000 vehicles worldwide for a power steering issue. Yaris and (overseas) Vitz models built between November 2010 and March 2012 could suffer a short circuit in their power steering control module if water gets inside. Should that happen, the power steering could fail, increasing effort when turning. The recall also includes the Verso-S and Ractis built from August 2010 to August 2011. The recall covers 130,000 vehicles in Japan and around 22,450 in Europe.
Only 74 units are being recalled in the United States.
Toyota says if the fault occurs, the vehicle will display the Electronic Power Steering warning light on the dash and a buzzer will sound. The automaker will alert owners by mail and dealers will replace the power steering control module free of charge. You can read the quick press release on the recall below for more information.