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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.

Recharge Wrap-up: Japan supports hydrogen, Fools against fuel cells, BlueIndy controversy

Japan hopes to expand the use of hydrogen energy by subsidizing fuel cell vehicles, according to The Japan News. The trade ministry plans to include the subsidies in its 2015 budget to coincide with the expected launch of Toyota's Fuel Cell Vehicle and the Honda FCEV hydrogen car. By jump-starting purchases of hydrogen cars, Japan hopes that innovation and mass-production will get a boost and the cost of fuel cell vehicles will be competitive with gasoline-powered models by the year 2025. Japan plans to have 100 hydrogen fueling locations operating by March 2016, and wants to halve the cost of building those stations by 2020. The amount of the subsidies has not yet been set. Investing website The Motley Fool isn't quite as optimistic as Japan about hydrogen cars, and is instead bullish about Tesla Motors. The Fool points to Tesla's strong stock performance, and predicts future growth will come from more car models in the future - starting with the Model X - as well as the company's proposed Gigafactory for manufacturing batteries. If Tesla's charging technology continues to catch on, that only improves its financial prospects. The article has some harsh words, however, for hydrogen: "Fuel cells are an inferior automotive technology and for fundamental efficiency, cost, and infrastructure reasons always will be mere compliance gimmicks." Yeesh. As part of a program to build charging stations for the Indianapolis EV carsharing service BlueIndy, utility company Indianapolis Power & Light (IPL) wants to raise its electricity rates an average of 44 cents a month per residential customer to help pay for its share of the project. State consumer advocacy agency Indiana Office of Utility Consumer Counselor and consumer watchdog group Citizens Action Coalition oppose the plan, according to Greenfield, Indiana's Daily Reporter. The BlueIndy program, which is a partnership between the city of Indianapolis and battery manufacturer Bollore Group, will provide up to 500 cars for rent at 25 charging sites around the city. Those who oppose the rate hike call IPL a monopoly and say the amount of the increase is not allowed under state law and that the program wouldn't benefit working class and low-income citizens. A hearing regarding IPL's proposal is scheduled for July 23. A Mitsubishi Outlander PHEV will run the 2014 Asia Cross Country Rally, Hybrid Cars reports. The rally covers 1,367 miles of woods, swamps and mountains from Thailand to Cambodia.

2019 Subaru Forester Sport vs 2019 Toyota RAV4 Adventure: How they compare

The 2019 Toyota RAV4 is not only completely redesigned, but reimagined as well. As we detailed in our first drive review, the new RAV4 ditches the more car-like and uber-utilitarian nature of its predecessor for something that's more SUV-like and characterful. It's a new direction exemplified in the RAV4 Adventure trim, which specifically targets those folks who plan to actually take their compact crossover to the great outdoors. People who will get it dirty, use the extra ground clearance and store things on the roof. You know, the sort of people who would consider the 2019 Subaru Forester. It too is redesigned for 2019, but its transformation is almost unnoticeable compared to the RAV4's. Forester customers were obviously quite happy with the way things were. We got a chance to drive both the 2019 RAV4 and 2019 Forester back-to-back last week both on-road and off-road, so let's take a look at how they compare, including a look at their on-paper specs. 2019 Toyota RAV4 Adventure View 31 Photos Performance and fuel economy The Forester got a new, more powerful 2.5-liter flat-four engine for 2019, and it now comes standard with a continuously variable transmission. It produces 182 horsepower and 176 pound-feet of torque, which is pretty much mid-pack among compact crossovers. Crucially, though, throttle response is so sharp that it makes the Forester actually feel quicker than it is when accelerating from a stop — a sensation enhanced even further by selecting the Sport Sharp mode button on the steering wheel. However, in either mode, the engine's remarkable power reveals itself as the tachometer and speedometer wind toward higher digits. One must also deal with the Forester's CVT. Perhaps some may appreciate the smooth, uninterrupted acceleration that results from a lack of gear changes (nor even simulated ones as in some other company's CVTs), but others may find it unusual and irritating. Subaru's CVT is certainly not our favorite example. By contrast, the 2019 RAV4 is conventional with its 2.5-liter inline-four engine and eight-speed automatic transmission, which behaves just as normally and effectively as one expects. The RAV4 is also considerably more powerful at 203 hp and 184 lb-ft — both compared to the Forester and to the entire segment as well. As a result, its acceleration is stronger (likely a difference of a half-second in 0-60-mph time) even if it may not initially feel like it.