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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 plans biggest stock buyback in over a decade

At the end of December, 2013 Toyota had a cash stockpile of 1.8 trillion yen ($17.5B US). As of March 31, at the end of its current financial year, company coffers are expected to swallow another 1.9 trillion yen ($18.4B US) in net profit - said to be a record sum for the Japanese automaker. In a gesture signaling a turnaround from the horrors of the global recession, Bloomberg reports that Toyota will buy back 60 million shares of its stock, as much as 1.89 percent of the company, for something like 360 billion yen ($3.5B US). It's the first buyback since 2009 and the largest buyback since 2003, when it spent roughly 390 billion yen ($3.8B US) repurchasing shares.
Company president Akio Toyoda founded the Toyota Mobility Foundation (TMF), a non-profit that will support international groups working on transportation issues in emerging markets. Half of the stock that Toyota buys, 30 million shares, will be sold to the foundation via the Japanese Trustee Services Bank for one yen per share, the dividend providing the foundation's initial funding. The other 30 million shares will be canceled, a company spokesman telling Reuters that the company wants to reward shareholders.
Industry analysts have been asking Toyota to either return money to shareholders or invest in new factories, but Toyota has ruled out the latter. After getting burned with excess capacity when the financial crisis came, the company is focused on extracting efficiencies from the plants it already has. Toyota has said it plans to complete the buyback by June of this year.

How many Toyotas are potentially affected by seat fabric problem?

When we reported yesterday on Toyota's stop-sale order of certain 2013 and 2014 models due to an issue with the fabrics on models with heated seats not conforming to flammability regulations, one of our many questions was how many vehicles were affected? More importantly, how many of those cars have already found homes?
Kelley Blue Book has the troubling statistics. Every 2013 and 2014 Avalon features heated seats. 6.2-percent of 2013 and 4.5-percent of 2014 Camry sedans, meanwhile, were sold with heated seats. That doesn't seem as bad as 100-percent of the larger Avalon, until you consider the Camry's huge volume - the 5.6-percent average still accounts for a lot of cars. Sienna minivans are heavily affected as well, with a total of 37-percent of 2013s and 46-percent of 2014s fitted with butt warmers. The stop-sale only affects 7-percent of 2014 Corolla models, but like the Camry, that number is rather misleading due to the sheer volume of cars Toyota moves. You can see the entire breakdown of percentages by clicking on the inset image.
According to Karl Brauer, a senior analyst for KBB, this problem comes at the worst possible time. "Given that much of the US is currently in the grips of a record cold snap, there's sure to be high demand for models with seat heaters," Brauer notes. The stop-sale order is a good first step, but it doesn't do anything to inform consumers who currently own the affected models and may, in these frosty temperatures, want to use their seat heaters. "Should owners of those vehicles stop using the seat heaters?" Brauer asked.