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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.

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.

Toyota Aygo, Citro?n C1 to join Peugeot 108 in Geneva

Just the other day, Peugeot took the wraps off the new 108. But its new city car, like the 107 it replaces, doesn't stand on its own. The 107 was a sister vehicle to not only the Citroën C1 but also the Toyota Aygo. So it should come as little surprise that, while Peugeot was the first to release photos and details on its version, Citroën and Toyota will also be on hand with their own versions when the veils lift on all three at the Geneva Motor Show.
We're expecting the new trio of budget-oriented hatchbacks to bear the fruits of individual efforts to distinguish themselves one from another more than their predecessors, which essentially looked the same save for different badges. But from the teaser image above, we'd venture that the Toyota version will be a further departure from the 108 than the C1 will be.
One way or another we'll have to wait and see, but for now you can view Toyota's teaser clip below, along with the press releases confirming the debut of both in Geneva next month.