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Toyota to buck engine downsizing trend, may go larger and turbo-free

Turbocharging isn't really Toyota's specialty, and the Japanese automaker isn't being shy about acknowledging it. Koei Saga, a senior managing officer in charge of drivetrain research and development, says that eschewing turbos and increasing displacement of engines using the Atkinson cycle can produce better power gains without sacrificing fuel economy, Automotive News reports.
Toyota is investing heavily in larger-displacement Atkinson-cycle engines in addition to turbocharged engines, but Saga doesn't think the automaker will use turbocharging across many product lines. He apparently remains unconvinced that the technology "makes the world better."
In Toyota's eyes then, Atkinson cycle engines do make the world better, and here's how. Their pistons complete four processes - intake, compression, power and exhaust - in one revolution of the crankshaft, and the power stroke is longer than the compression stroke. Traditional Otto cycle engines require two crankshaft revolutions to accomplish those same four operations and have equal-length compression and power strokes. Atkinson cycle engines are more efficient, but less power dense, though increasing displacement can offset that shortfall.

Subaru Viziv 2 presages Tribeca replacement with diesel hybrid tech

Subaru is in the middle of a new product bonanza. It has recent replacements for the Impreza and Forester at dealers, and soon we're getting the WRX, Legacy and if rumors are right the new Outback as well. Now, there are rumblings that there could be two more models from the Japanese brand on the way with styling inspired by the Viziv 2 concept from the Geneva Motor Show.
According to a company insider speaking with Motor Trend, the crossover concept shows the way for the brand's future design language. The shape would be used on a smaller CUV that is still being kept quite secret, and a second, larger one that would replace the recently axed Tribeca. The bigger model is the first priority and is planned as a new technology showcase.
It's rumored to use a turbodiesel, four-cylinder boxer engine that would be boosted with one electric motor on the front axle and two at the rear, with a plug-in hybrid system sourced from Toyota. It should provide a great mix of torque and fuel economy. A smaller flat-six engine would be a second powertrain option. Though the Viziv 2 concept only seats four, the production version would probably offer three rows.

Toyota unofficially teases TE-S800 plug-in hybrid roadster

We really want to party with the Toyota Engineering Society. With the mothership company showing a bunch of modifications at the Tokyo Auto Salon last month, that nutty engineering group used the event to unofficially show off its TE-S800 PHEV roadster, as you can see in the two-minute video below. The car is a plug-in hybrid that pairs the 115-horsepower gas engine that's standard issue on the Toyota Prius hybrid with a 102-horsepower electric motor. The right-hand-drive two-seat-vehicle also sits on the platform of the little-bitty MR2 (remember those?) so it weighs in at less than 2,000 lbs. And, as you can see, the car's also painted bright green (now there's a hint) and kind of cool-looking. Do the math of combining more than 200 horsepower with a featherweight car, and you've got a rather sporty vehicle that can sprint from 0 to 60 miles per hour in less than six seconds, all while getting outstanding fuel economy. Yippee! Engineering Society aside, the Japanese automaker brought more than 30 customized vehicles to the Salon. Those included the Harrier G Sports Concept, a modified version of the Toyota's new crossover, and the Vitz RS G Sports Concept, which is a sported-out Yaris. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. News Source: Gas2Image Credit: YouTube (mikichan1984) Green Toyota Electric PHEV roadster