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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.

BMW, Toyota warn about Chinese market slowing down

BMW and Toyota are the latest automakers to become concerned about the closing throttle on the once rapidly accelerating vehicle market in China. There might be drastic effects on their ledgers at the end of the year. With the Chinese stock market no longer looking so healthy, the people just aren't buying as many new cars as in the past. Things got really bad in June after the first drop in deliveries in two years. BMW has already reduced Chinese production by 16,000 units so far this year. Despite the slowdown, the company has kept a brave face. "We experience that volatility in all emerging markets," BMW CEO Harald Krueger said in a conference call, according to Automotive News. The problem for Toyota is a bit stranger. Through July, the automaker's Chinese deliveries were actually up 12 percent. However, the gain was offset by falling sales prices. "This is making our business in China quite difficult. The business environment is getting tougher," Toyota Managing Officer Tetsuya Otake said, Automotive News reported. Much of the weakness in China has come in the middle part of the year, and from January through June deliveries were still up 8.4 percent. This means the effects haven't hit the financial results of some automakers too hard quite yet. In the second quarter, General Motors referenced the "challenging conditions" there but still posted a growing net income of $1.1 billion. Despite falling global sales, Toyota managed record income for the quarter, too.

Toyota's fuel pump recall now covers nearly 6 million vehicles globally

Toyota expanded a worldwide fuel pump recall to a total of 5.84 million vehicles for a defect that could cause the part to fail. In the United States, the total number of vehicles involved in this safety recall is now approximately 3.34 million vehicles. On January 13, 2020, Toyota announced a safety recall for 695,541 Lexus and Toyota models. In March of 2020, the Japanese automaker added an additional 1.1 million vehicles to the previous recall. Now, the largest Japanese automaker adds another 1.52 million U.S. vehicles to the recall that was first announced in January and covers numerous models built between July 2017 through September. Here is a full list of vehicles that are now included in the expanded recall: 2013-2015 Model Year Lexus LS 460; 2013-2015 Model Year Lexus GS 350; 2014 Model Year Toyota FJ Cruiser, Lexus IS-F; 2014-2015 Model Year Toyota 4Runner, Land Cruiser; Lexus GX 460, IS 350, LX 570; 2015 Model Year Lexus NX 200t, RC 350; 2017 Model Year Lexus IS 200t, RC 200t GS 200t; 2017-2019 Model Year Toyota Highlander; Lexus GS 350; 2017-2020 Model Year Toyota Sienna and Lexus RX 350 2018-2019 Model Year Toyota 4Runner, Land Cruiser; Lexus GS 300, GX 460, IS 300, IS 350, LS 500h, LX 570, NX 300, RC 300, RC 350; 2018-2020 Toyota Avalon, Camry, Corolla, Sequoia, Tacoma, Tundra; Lexus ES 350, LC 500, LC 500h, LS 500, RX 350L 2019 Model Year Toyota Corolla Hatchback and Lexus UX 200 2019-2020 Model Year Toyota RAV4 Toyota said the vehicles that have a fuel pump that may stop operating and could result in a vehicle stall, and the vehicle may be unable to be restarted. Dealers will replace the fuel pump with an improved version. Toyota's customer support is available to owners with affected vehicles by calling the Toyota Brand Experience Center at 1 800 331-4331. Related Video: Recalls Lexus Toyota Truck Coupe Crossover SUV Sedan