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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 mulling Cummins diesel for Tundra?

When Bloomberg spoke to Toyota USA Sales CEO Kazua Ohara recently, we highlighted his comments on the possible return of the Toyota Supra. However, the interview started with Ohara discussing the Tundra, and how it would take time to pinpoint and hone the pickup truck's brand image in the minds of consumers. That effort could get a boost, with a report in Edmunds saying that Toyota is "evaluating" the addition of a Cummins turbodiesel to the Tundra's engine options.
The Cummins powerplant is one of two options for the moment, the other being a hybrid powertrain. If the oil-burner got the thumbs-up, Toyota would follow the recent example of Nissan, which announced it would put a Cummins turbodiesel into its 2015 Titan. While the two Japanese companies make a closer comparison since they're both talking about Cummins applications in light-duty trucks, if it happens, it could be seen as further diluting the once-exclusive tie-up that Ram trucks has had with Cummins even though Ram has used Cummins in its heavy-duty truck.
Toyota hasn't said when it will decide on which direction to take, but either will be a move for the better in the view of segment watchers; PickupTrucks.com said the first of its top-five fixes for the Tundra would be a better engine, perhaps a diesel-electric hybrid from Toyota's Hino unit. Cummins told Edmunds it can supply a second manufacturer with the 5.0-liter diesel that Nissan will be using, so we wouldn't be surprised to see it end up in a Toyota or somewhere else.

Hyundai Prius-fighting hybrid spied wearing new camo

Hyundai's engineers certainly don't want the public to see its upcoming dedicated hybrid model in several of these new spy shots, but the company can't deny that the machine is on the way. These test cars were first spotted last summer as Prius-like five-door hatchbacks. However in these photos and the second set, it would seem that the model has morphed into a more sedan-like shape similar to the Chevy Volt. Unlike the last time we saw this car during arctic testing, the vehicle no longer is covered in plastic concealment. That obfuscation has been replaced with a very effective camo pattern on everything but the roof, and in several photos, workers are actively standing in the way of the spy shooters' lenses. Beyond the whole model's general shape, there are a few details to pick out, though. You can easily spot the outline of the brand's hexagonal grille up front. There appears to be a rather complicated air dam design there, too. In profile, the shape of the rear hatch creates an integrated spoiler at the back. While the camouflage makes it very hard to tell, we don't see a plug-in port on this example. According to our spies, this test car was being driven with a slew of other electrified models, including a BMW i3, Nissan Leaf, Volkswagen e-Golf, and Kia Soul EV. Given that group, perhaps the engineers were specifically benchmarking the electric performance for this outing. Earlier reports suggest that Hyundai's latest hybrid could debut in the second half of 2016. Power reportedly comes from a 1.6-liter four-cylinder with hybrid assistance and a lithium-ion battery. Plug-in and five-door hatchback versions are also rumored.