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We record Autoblog Podcast #319 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #319
Jeep checks out the Grand Wagoneer at Wagonmaster

Tesla pulling plug on Toyota RAV4 EV battery deal

The future of the Toyota RAV4 EV appears to be in doubt. Tesla supplies the EVs battery packs, and it says that production ends later this year.
"Toyota is expected to end the current RAV4 EV model this year," Tesla said in its quarterly financial filing obtained by Bloomberg. "Our production activities under this program are expected to end in 2014," the company said.
This timeline fits closely with the original production plans for the RAV4 EV. When the $100-million project was first announced, Tesla said that it expected to supply battery packs for the vehicle from 2012 to 2014. Building components for the Japanese automaker continues to bring in money, though. In the company's Q1 2014 letter to shareholders, it said: "Automotive revenue included $15 million of Toyota powertrain sales." According to Bloomberg, Toyota has sold just 1,594 RAV4 EV models from 2012 through April 2014. Initially, the business had estimated that it would sell 2,600 units of the electrified crossover.

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.