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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.

Toyota announces new, more efficient powertrains for 60 percent of its vehicles by 2021

In the face of increasingly strict standards on fuel economy and CO2 emissions, Toyota announced today that it's introducing a new hybrid system, a new 2.5-liter direct-injection inline four-cylinder engine, and two new transmissions – an eight- and a 10-speed. The development of all of these components will be based around the Toyota New Global Architecture, or TNGA. Development of the systems has moved forward and the new powertrains will find their way into vehicles starting next year. TNGA, like Mazda's Skyactiv technology, is a complete design philosophy that focuses on more than just a clean or efficient engine. The first vehicle to deploy the TNGA platform was the current, fourth-generation Prius. With TNGA, Toyota focused on improving handling, ride, and braking performance. The new powertrains are meant to compliment this new platform by being both engaging to drive and fuel efficient. Since TNGA can be adapted for front-, rear-, or all-wheel-drive layouts, it's capable of underpinning a number of potential products. Toyota is arguably the leader in hybrid technology, and taking lessons learned in the development of the current Prius, the automaker has developed the new Toyota Hybrid System II, or THS-II, for rear-wheel-drive applications. Performance has improved versus the outgoing model, and Toyota says efficiency, especially at high speeds, has been improved. In addition, the system's use in plug-in vehicles has been improved. For the first time, the electric motor will be able to provide direct driving power, whereas before it simply acted as a generator. The new, naturally aspirated 2.5-liter four-cylinder, like the THS-II, has been designed around the TNGA platform. Most notably, the thermal efficiency of the engine has been improved. This means a higher output and improved exhaust and cooling. The new engine, which works in both traditional and hybrid applications, will proliferate through the Toyota and Lexus lineup. Toyota's two new automatic transmissions, like the new engines, are based on the TNGA system. That means a lighter and more compact design relative to similar transmissions. The 10-speed is intended for rear-wheel-drive Lexus products like the GS and LS. The tuning has been adjusted to improve response and smooth out shifts, though it's impossible to say how much it's been improved without getting behind the wheel.

Camry, Avalon Hybrids involved in stop-sale of 50,000 Toyota vehicles

A number of popular Toyota vehicles can currently not be sold thanks to something called a "stop-sale" order. The reason is that the seat heater on these vehicles - which include the 2013 and 2014 Camry, Camry Hybrid, Avalon, Avalon Hybrid, Sienna, Corolla, Tacoma and Tundra models - "does not meet a provision of US Federal Motor Vehicle Safety Standards (FMVSS) requiring materials to retard flame at a specified rate." In other words, the seat heater could burn too fast. There have been no reports of fires or injuries due to the issue. Toyota told AutoblogGreen that around 50,000 vehicles are affected. No Scion or Lexus vehicles have the problem. The exact fix has not been identified, but Toyota said it is preparing a modification for all vehicles still on dealer lots, but there has not yet been an official recall. Instead, Toyota filed a "Non-Compliance Information Report" with the National Highway Traffic Safety Administration (NHTSA) today. You can read Toyota's official statement below. Toyota and NHTSA are also looking at around 30,000 2007-2008 model year Camry Hybrids for brake issues. Seat Heater Non-Compliance Issue Creates Temporary Stop Sale On Certain Toyota Models January 30, 2014 Toyota has informed the National Highway Traffic Safety Administration (NHTSA) that it has initiated a stop sale of certain Avalon, Avalon Hybrid, Camry, Camry Hybrid, Corolla, Sienna, Tacoma and Tundra vehicles equipped with seat heaters in order to address a non-compliance issue. In involved vehicles, the seat heater, which is a small portion of the soft materials of the seat assembly, does not meet a provision of U.S. Federal Motor Vehicle Safety Standards (FMVSS) requiring materials to retard flame at a specified rate. Toyota is preparing a modification for this condition, which will be implemented on all covered vehicles in dealer inventory. There have been no reports globally of any related incidents in the field with units in operation. Per NHTSA regulations, Toyota will file a Non-Compliance Information Report today. Featured Gallery 2013 Toyota Camry Hybrid: Review View 23 Photos News Source: ToyotaImage Credit: Copyright 2014 Drew Phillips / AOL Government/Legal Green Toyota Hybrid toyota avalon