2007 Toyota Camry Hybrid Sedan 4-door 2.4l on 2040-cars

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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 finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.

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