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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.

Toyota mulling Cummins diesel for Tundra?

When Bloomberg spoke to Toyota USA Sales CEO Kazua Ohara recently, we highlighted his comments on the possible return of the Toyota Supra. However, the interview started with Ohara discussing the Tundra, and how it would take time to pinpoint and hone the pickup truck's brand image in the minds of consumers. That effort could get a boost, with a report in Edmunds saying that Toyota is "evaluating" the addition of a Cummins turbodiesel to the Tundra's engine options.
The Cummins powerplant is one of two options for the moment, the other being a hybrid powertrain. If the oil-burner got the thumbs-up, Toyota would follow the recent example of Nissan, which announced it would put a Cummins turbodiesel into its 2015 Titan. While the two Japanese companies make a closer comparison since they're both talking about Cummins applications in light-duty trucks, if it happens, it could be seen as further diluting the once-exclusive tie-up that Ram trucks has had with Cummins even though Ram has used Cummins in its heavy-duty truck.
Toyota hasn't said when it will decide on which direction to take, but either will be a move for the better in the view of segment watchers; PickupTrucks.com said the first of its top-five fixes for the Tundra would be a better engine, perhaps a diesel-electric hybrid from Toyota's Hino unit. Cummins told Edmunds it can supply a second manufacturer with the 5.0-liter diesel that Nissan will be using, so we wouldn't be surprised to see it end up in a Toyota or somewhere else.

2014 Toyota Highlander to start at $30,075*

We now have pricing for Toyota's redesigned 2014 Highlander, which is seeing moderate price hikes across the board. Prices for the popular crossover have been bumped from less than 1 percent to less than 3 percent on lower-end models (anywhere from $125 to $890, depending on trim). Toyota has increased prices on higher-end XLE and Limited models more substantially - between 4.1 and 4.5 percent ($1,480 to $1,700). The Highlander Hybrid sees its price increase 2 percent ($930). The new model will be available in four different trims and with either front or all-wheel drive.
The absolute cheapest member of the Highlander range, the base LE, with a four-cylinder and front-wheel drive starts at $30,075, an increase of just $195. The LE is also available with a V6 and all-wheel drive, with the bigger engine upping the price to $31,380. All-wheel drive models start at $32,840. A slightly pricier LE Plus starts at $33,600 for a V6 FWD model and $35,060 if you add all-wheel drive.
Next up, we have the XLE, which starts at $36,900 for FWD models and moves up to $38,360 for AWD. The top-tier Limited model starts at $40,500 in FWD spec, grips-at-all-fours versions will retail for $41,960. For those that want the very top of the Highlander range, there's the Platinum Pack, which adds the Driver's Tech Pack (adaptive cruise control, pre-collision warning, lane departure warning and automatic high beams), a panoramic moonroof, heated steering wheel and heated second-row seats to the already well-equipped Limited model. Highlander Platinums start at $42,990 and $44,450, depending on how many tires are doing the work. (Note: All prices include an $860 destination and handling charge.)