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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

2015 Toyota Camry Hybrid

Toyota offers many flavors of its refreshed 2015 Camry, but those who choose to lower their operating cost-per-mile, squeeze 500-plus miles out of each tank of fuel or run a very efficient and reliable sedan in their taxi fleets will only be interested in one: the Camry Hybrid.
The exterior of the 2015 Camry Hybrid is nearly indistinguishable from its gasoline-only counterparts, with the same all-new sheetmetal and bumpers. The Hybrid is offered in LE, SE and XLE trims, meaning customers are offered base, sport or luxury configurations, respectively.
While Toyota expended quite a bit of effort resculpting and improving the 2015 Camry Hybrid, one area it didn't touch was the powertrain - it is virtually identical to last year's model (just like the gas version). Under the hood is a 2.5-liter Atkinson cycle four-cylinder gasoline engine (156 horsepower and 156 pound-feet of torque) and an electric tractive motor (141 horsepower and 199 pound-feet of torque). Combined, and running through Toyota's unique Hybrid Synergy Drive electronic continuously variable transmission, the two produce 200 horsepower (Toyota does not list a combined torque figure, and we've asked for clarification). A 1.6 kilowatt-hour nickel-metal-hydride battery, packaged behind the rear seats, provides energy storage.

A new Toyota MR2? We want to believe

In the wake of a busy Geneva auto show, the rumor mill is churning, and the latest grist involves one of the most beloved Toyota sports cars of all time. EVO reports that Tetsuya Tada, the chief of the Scion FR-S/Toyota 86 project and a hard-liner about sportscar priorities (light and nimble, but with modest horsepower), wants a third vehicle for Toyota's nascent sporty lineup. Currently, we know there's a Supra-like vehicle in the works, being co-developed with BMW, and the 86 is sticking around. Tada said he'd like a third sportscar to compliment the two we know about, and that he wants it soon. A quick bit of history: Toyota's classic sporty lineup had three components. The most visible was the Supra, whose power and prestige grew as the car evolved from a cushy personal tourer to a high-horsepower, high-technology icon. The Celica was its Clark Kent, more mild mannered but also more accessible and affordable. The third was the MR2, a mid-engined go-kart that lasted for three distinct generations. Each had its charms, and all have their fans. When Tada says that he wants three sportscars in the lineup, we already know about the Supra successor, and the 86 is already filling the Celica's role, so the blank is easy to fill. It doesn't sound like Tada spoke the word "MR2" to EVO, or hinted that the car would be mid-engined, but Tada doesn't seem to say anything without purpose. Whatever the layout, this third car – if it comes to fruition – will probably play a role similar to the MR2 in relation to its stablemates. To translate: it'll likely be even lighter and more nimble, and probably less powerful, than the 86. The closest real-world analogue to the pure MR2 ideal is the Honda S660, a mid-engined Kei roadster that's on sale in Japan right now. It's light, small, and powered by a 0.66-liter inline-three. Toyota could decide to directly compete with the S660, borrow an engine from its small-car specialist subsidiary Daihatsu, and produce a mid-engined MR2. Another possibility, even simpler from Toyota's perspective, would be to adapt the existing Daihatsu Copen roadster. Sure, it's front-engine and front-wheel drive, but it's a small, light roadster. And even better, it sells abroad with a larger 1.3-liter engine. Restyle it slightly, perhaps to resemble the S-FR concept of a couple years ago, and it's an off-the-shelf solution. The S-FR itself is a third possibility.