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Toyota unveils two new small displacement engines

Toyota introduced a pair of brand-new engines in Japan today, that it says will eventually spawn 14 different variants by 2015. Where these two engines stand out in today's world, is that neither mill boasts direct injection, and both are naturally aspirated.
The larger of the two is a 1.3-liter, while the smaller engine, a 1.0-liter, was developed in collaboration with Daihatsu. What makes these two unique is that they both use the Atkinson cycle. Now, we aren't going to bore you by explaining just what this is - there's Google for that. Suffice it to say, Atkinson engines are highly efficient, but that efficiency comes by sacrificing power. That's why they're so popular in hybrids, which can offset the power losses.
This focus on fuel efficiency extends throughout the new engines, which also benefit from tweaks like a cooled exhaust gas recirculation system and a trick intake port, while the 1.3 employs Toyota's iE variant of variable valve timing. Both engines can be fitted with stop-start tech. According to Toyota, when fitted with stop-start the 1.3 should provide around a 15-percent bump while the 1.0-liter will increase economy around 30 percent, when they arrive on the road.

Scion iA and iM rolled into Yaris and Corolla lineups for 2017

The Scion brand may be going away, but most of its cars (sorry, tC) are living on. We'll see the 2017 Toyota 86 (nee Scion FR-S) at the New York Auto Show next week, and the automaker already confirmed that the Scion iA and iM will be rebadged as Toyotas. But instead of standing on their own, the former Scions will be rolled into existing model lines. "Yaris iA" and "Corolla iM" will be the official names of the cars, effective for 2017. It's a smart move, paring the relatively new Scion nameplates with well-known, existing Toyota monikers. Scion spokeswoman Nancy Hubbell tells Autoblog that the iA already exists as the Yaris in the Canadian and Mexican markets, so "that connection was already there." Plus, it's better for marketing. The combination of the two vehicles all under the Yaris nameplate means Toyota can focus its advertising dollars on one vehicle line, simply saying that you can now have the Yaris as a four-door sedan or a five-door hatchback. "The same goes with Corolla," Hubbell explains. She says the existing Toyota sedan and the Scion iM "paired really well," and again, it means Toyota can advertise the Corolla as having two body styles moving forward. There are benefits from a sales perspective, too. Never mind that Scion division sales were already included in Toyota's overall numbers – calling the new cars Yaris iA and Corolla iM means the company won't have to report these cars individual sales separately. It's like when Toyota made the Matrix – its technical name was Corolla Matrix, so its individual sales didn't have to be broken out. That means an extra boost in overall numbers for the Yaris and Corolla, even if the cars would have been reported under Toyota's numbers had they kept their Scion badges. View 18 Photos Related Video:

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.