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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.

Italian coachbuilder wraps a modern-day Citroen van in a retro skin

Italian coachbuilder Caselani resurrected an obscure, often-forgotten model from Citroen's past to offer van buyers an additional retro-styled option. Called Type HG, it's based on the current-generation Citroen Jumpy. One of the French carmaker's best-known vintage vans is the Type H, which was built with only minor changes from 1947 to 1981. It's aged into a sought-after classic that's popular as a food truck and as a camper from Paris to Sydney. Few realize Citroen planned to release a smaller model named Type G which looked almost exactly like the H but used an air-cooled flat-twin engine shared with the 2CV. Several prototypes were made, but the project was canned in favor of the 2CV-based, nine-horsepower AU van released in 1951. It's this little-known prototype that only exists in Citroen's official heritage collection and in the minds of the most indoctrinated French car enthusiasts that Caselani chose to bring into the 21st century. And, because the Type G (shown below) was a shrunken copy of the Type H from a design standpoint, making a body kit that fits the Citroen Jumpy was relatively simple. Caselani liberally borrowed styling cues from its modern version of the Type H, which is based on the larger Citroen Jumper sold as the Ram ProMaster in the United States. It adds a new-look front end with a vertical grille, chromed chevrons, and round headlights positioned as far out of the body as regulations permit, corrugated body panels, and a redesigned rear end. Whitewall tires are optionally available. Caselani offers the Type HG as a passenger van, a crew-cab van, and a panel van. Pricing starts at 29,400 euros before taxes are factored in, a sum that represents about $35,000 and that corresponds to a short-wheelbase panel model powered by a 100-horsepower, four-cylinder turbodiesel engine. Alternatively, motorists who already own a Jumpy can purchase the transformation kit on its own for 14,800 euros (about $17,500). For added peace of mind, Caselani pointed out the conversion was created with Citroen's input, and the brand authorized the kit. We know what you're thinking: what on earth is a Jumpy? Glad you asked! It's a van positioned in the middle of Citroen's commercial range. It slots between the Berlingo, which competes in the same segment as the Ford Transit Connect, and the Jumper, which is marketed as an alternative to the Ford Transit.

Toyota gives up more information on Frankfurt-bound Yaris Hybrid-R concept

Toyota has undeniably carved out a niche for itself as the industry's leader in hybrid propulsion. What started out with the original Prius in 1997 has, over the past sixteen years, ballooned to what Toyota reports as a global hybrid portfolio of 23 models. But few (if any of them) are particularly exciting.
That's where the Yaris Hybrid-R concept comes in. Set to be showcased along with the rest of Toyota's hybrid and fuel-cell lineup at the upcoming Frankfurt Motor Show next month, the concept starts with one of the Japanese auto giant's least exciting models and upgrades it to more enticing territory. Toyota Motorsport GmbH - the same Cologne, Germany-based division that operated the company's F1 team, currently runs its Le Mans program and gave us that bonkers 650-horsepower Lexus LS - has slotted in a version of Toyota's new 1.6-liter Global Race Engine and paired it with a couple of electric motors for hybrid propulsion and through-the-road all-wheel drive.
Like the TS030 Hybrid LMP1, the Yaris Hybrid-R concept uses a super capacitor (instead of a conventional battery) to store the regenerated brake energy and give it upwards of 400 horsepower. That's about all Toyota is revealing at this point, but this is the first time it has confirmed the project is based on a Yaris, of all things, and the confirmation comes with the solitary teaser rendering you see above. Check out the press release after the jump and watch this space for more as Frankfurt fast approaches.