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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

How Toyota's Le Mans racer may make its next Prius even better

The supercapacitor technology in the Toyota TS040 "offers great possibility for production car use." – Amanda Rice, Toyota Pop-culture junkies familiar with 1980s touchstone movies will hear the word "capacitor" and think Back to the Future. But the concept of supercapacitors being used in upcoming production models is being pushed by Toyota, not DeLorean. And because of that push, the future might look a little brighter for the Prius. The Japanese automaker will likely apply electric-motor technology used in Toyota's 24 Hours of Le Mans entry – the TS040 – in future versions of the world's best-selling hybrid, Australian publication Drive.com.au says, citing an interview with Toyota Motor Sports' Yoshiaki Kinoshita. Specifically, the racecar uses supercapacitors because they're effective at storing energy created when the vehicle is under braking, only to quickly redistribute it on demand for rapid acceleration. Kinoshita said Toyota may apply this technology to the Prius within the next five years. While declining to comment on specifics, Toyota spokeswoman Amanda Rice tells AutoblogGreen that the Le Mans vehicle "represents an advanced vehicle laboratory for hybrid vehicle and component development. The supercapacitor technology used in this vehicle with its fast charge and discharge capability offers great possibility for production car use." In her email, Rice added that the next-generation Prius will have smaller electric motors with greater power density and thermal efficiency, so let's add that to what we know or think we know about the fourth-generation model. Toyota entered two vehicles in this year's Le Mans race, and one of them had secured the pole-position and was leading much of the race before calling it quits 15 hours in because of electrical issues. Audi ended up winning the race, marking its 13th victory in the history of the French endurance contest.

Toyota settles first wrongful death suit related to unintended acceleration

Toyota's sales seem to have rebounded from the unintended acceleration issues from 2009 and 2010, but the automaker is far from done dealing with this situation. Following a settlement worth up to $1.4 billion for economic loss to affected vehicle owners, Toyota has settled rather than going to trial in a wrongful death lawsuit stemming from an accident in Utah in 2010 that left two passengers dead. This isn't the first case in which Toyota has settled, but it was the first among a consolidated group of cases being held in Santa Ana, CA.
According to The Detroit News, this case was scheduled to take place next month, and it was for a November 2010 incident in which Paul Van Alfen and Charlene James Lloyd were killed in a Camry when, based on findings by the Utah Highway Patrol, the accelerator got stuck causing the car to speed out of control and hit a wall; the terms of the settlement were not announced.
The article says that while Toyota will settle on some cases, it doesn't plan on settling on all of them as it still wants to be able to "defend [its] product at trial." This will probably be the case in suits claiming that software for the drive-by-wire accelerator was the cause of an accident in a Toyota or Lexus vehicle. The question of whether or not the electronic accelerator played any role in this problem has been a hot-button topic since the beginning. Toyota has issued recalls in the past to attempt to prevent unintended acceleration caused by trapped floor mats and faulty accelerator pedals, but it also says driver error was to blame in some instances.