2004 Toyota Sienna Xle Limited Mini Passenger Van 5-door 3.3l on 2040-cars

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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.

Toyota R&D shows off free piston engine linear generator for future EVs

We often hear how an electric vehicle powertrain architecture allows vehicle designers much more freedom than a traditional ICE powertrain does. With differently shaped battery modules and small electric motors, there are lots of way to put the pieces together. With today's plug-in hybrid technology, engineers still need to put a decent-sized ICE somewhere, but new technology from Toyota could free up the gas-electric vehicle designers of the future. Presented at the recent SAE World Congress in Detroit, the idea from Toyota Central R&D Labs Inc. and involves what is called a Free Piston Engine Linear Generator (FPEG). Think of it as a sort of one-cylinder, two-stroke mini-engine that can work either as a generator (thank to magnets and a linear coil) or to directly drive a vehicle. The current prototype is a 10-kW unit that Toyota say would provide enough power to get a B- or C-segment electric vehicle up to highway speeds (75 miles per hour) when paired up to offer 20 kW. Pairing the FPEGs is also important to minimize vibrations. One system tested by Toyota had a 42 percent thermal efficiency, but the engineers are working to improve the overall efficiency even further. You can watch an animated video of the piston in action here (click on "Outline") and see the SAE papers here and here. More technical details are available at Green Car Congress. News Source: Toyota Labs via Green Car CongressTip: Thanks, Joe V. Green Misc. Auto Shows Toyota Technology Emerging Technologies Electric generator

Toyota Expands Airbag Recall To 2.2 Million Vehicles Worldwide

Was your Toyota inspected under the company's recall campaign for faulty airbag inflators last year? You might have another trip ahead to have it repaired again. The automotive giant says that it found "the involved serial numbers provided by the supplier were incomplete, and did not include all of the potentially involved inflators," according to its official announcement. That means more replacements are needed. Toyota's April 2013 inflator recall covered the Corolla, Matrix and Tundra from the 2003 and 2004 model years, the Sequoia from 2002 to 2004 and the Lexus SC 430 from 2002 to 2004. At the time, the company said it would need to inspect about 510,000 vehicles in the US but only expected to replace around 170,000 inflators. However, the latest announcement increases that figure to about 766,300 vehicles in the US. Toyota spokesperson Cindy Knight told Autoblog that the new amount is the combination of owners who need to have their vehicle looked at again and those who didn't come in for the initial recall. The company learned about the problem when Takata, the supplier, provided it with an improved list of the faulty part's serial numbers. According to The Detroit Free Press, the latest recall affects about 2.27 million vehicles from them worldwide. Knight said owners would receive notification of the problem around the end of the month but repairs would come in phases because the automaker doesn't have all of the necessary parts at the moment. The original problem occurred because the front passenger airbag inflator from Takata could have an improper propellant that could cause it to burst in an accident and not allow the airbag to deploy properly. Toyota inspected all the vehicles listed but only changed the inflators with specific serial numbers. Now, it's replacing them all. This wasn't just a problem for Toyota, though. Honda, Nissan and Mazda also used the faulty inflators and issued recalls at the same time. Autoblog has contacted the other Japanese automakers about whether similar campaigns are necessary for them. We will update this story, if we hear back from them. Scroll down to read Toyota's announcement. UPDATE: Honda spokesperson Jessica Howell sent along the following statement: Honda is aware that Toyota recently announced a recall of front passenger's airbag inflators. Honda is not aware of any incidents in our vehicles related to Toyota's action. We are currently investigating the potential implications to Honda vehicles.