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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

Here We Go Again: Lexus attacks EVs in new ad [UPDATE]

UPDATE: We got a comment from founding member of Plug In America Paul Scott on this ad. It's available below. The last time Lexus attacked plug-in battery vehicles in an ad, it had to apologize. The company is remaining on message, though, and has revisited a hybrid-vehicle advertising campaign that implies that driving a battery-electric vehicle is a big waste of time, because of all the charging you need to do. With the new spot, Lexus once again raised hackles of plug-in vehicle advocates because, once again, the accuracy is questioned. "The ad's message was that a consumer could [drive] a vehicle with advanced technology today, without sacrifice or change in habit." – Lexus spokesman Brian Bolain Lexus is running print ads (click to enlarge) in publications like Wired poking fun at EVs, the International Business Times says. Lexus highlights range anxiety in the spot, comparing the amount of time it takes to fully recharge an EV – and the idea that air conditioning and using the radio can shorten an EV's range – to the fun of just driving a Lexus. "The [print] ad was merely intended to paint a picture of life with a hybrid, which is basically no different from life with a traditional gas-powered vehicle, versus life with an EV, which can have challenges or at least uncertainties," Lexus spokesman Brian Bolain told AutoblogGreen. "In other words, at its core, the ad's message was that a consumer could participate in driving a vehicle with advanced technology today, without sacrifice or change in habit." The campaign picks up where Lexus's previous anti-EV campaign left off this spring. A website promoting Lexus's hybrids (and parent company Toyota's H2 vehicles) claimed that there was a hydrogen refueling infrastructure set up in 20 US states (not anywhere close to true). Plug-in advocates were also quick to note that higher-powered EV recharging systems can allow a plug-in to be recharged in far less than the four hours the Lexus site claimed. Of course, Toyota has a lot more skin in the game when it comes to hybrids and, starting next year, hydrogen fuel-cell vehicles than it does for plug-ins. Through August, the company sold just 842 RAV4 EVs and about 11,500 Toyota Prius Plug-in Hybrids in the US. That compares to almost 19,000 Nissan Leaf EVs and a Tesla Model S count that's likely close to that figure as well (Tesla breaks out neither monthly sales numbers nor US-only sales for the Model S).

Question of the Day: Ever consider driving a minivan?

Since I'm supposed to know something about cars, it happens all the time: friends and relatives ask me advice about what kind of vehicle they should get. Very often, the only type of vehicle that can check every item on their wish list (e.g., hauls lots of people and stuff, gets good fuel economy, has great crash-test ratings, can take four Great Danes camping, and so on) is a modern minivan... and, of course, nobody wants to hear this. I'm not a minivan person, they will wail, and so they end up with a cramped, fuel-swilling SUV or a not-so-space-efficient minivan-in-disguise CUV. So, is it worth becoming one of those minivan people in order to get the incredible usefulness of these masterpieces of vehicle engineering, or do you hold your head high and drive something that doesn't quite meet your needs? Related Video: Auto News Design/Style Chrysler Honda Toyota Minivan/Van question of the day questions