2011 Toyota Rav4 4 Cyl on 2040-cars

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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.

Chip maker Nvidia adds Volvo to list of self-driving partners

Chipmaker Nvidia Corp announced on Monday it was partnering with Volvo Cars and Swedish auto supplier Autoliv to develop self-driving car technology for vehicles due to hit the market by 2021. Volvo is owned by China's Geely Automobile Holdings. Silicon Valley-based Nvidia also announced a non-exclusive partnership with German automotive suppliers ZF and Hella for artificial intelligence technology for autonomous driving. Nvidia came to prominence in the gaming industry for designing graphics processing chips, but in recent years has been a key player in the automotive sector for providing the so-called "brain" of the autonomous vehicle. The company, whose many partners already include Tesla, Toyota, Ford, Audi, BMW, and tier one supplier Robert Bosch, announced its latest deals at an automotive electronics show in Ludwigsburg, Germany. Nvidia's Drive PX artificial intelligence platform is used by Tesla in its Models S and X and upcoming Model 3 electric vehicles. Volkswagen AG's Audi is also using the system to reach full autonomous driving by 2020. In a call with reporters, Nvidia's senior automotive director Danny Shapiro said carmakers and their main suppliers are now moving away from the research and development phase of autonomous vehicles and into concrete production plans. The system developed jointly by ZF and Hella, and using Nvidia's Drive PX platform, will combine front cameras with radar and software to create technology meeting the Euro NCAP safety certification for so-called "Level 3" driving, in which some, but not all, driving is performed by the car. Volvo is already using the Drive PX for the self-driving cars in its "Drive Me" autonomous pilot program. Volvo's production vehicles built on Nvidia's platform, as announced on Monday, are planned for sale by 2021.Reporting By Alexandria SageRelated Video: Auto News Green Tesla Toyota Volvo Technology Emerging Technologies Autonomous Vehicles nvidia autoliv

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.