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Tougher than steel: Wood pulp could make lighter auto parts

KYOTO, Japan — The global push among carmakers to make ever lighter vehicles is leading some auto suppliers in Japan to turn to what seems like an unlikely steel substitute — wood pulp. Japanese researchers and auto component makers say a material made from wood pulp weighs just one-fifth of steel and can be five times stronger. The material - cellulose nanofibers — could become a viable alternative to steel in the decades ahead, they say, although it faces competition from carbon-based materials, and remains a long way from being commercially viable.> Related: Jay Leno drives the Renew cannabis car — hemp you can't dent Reducing the weight of a vehicle will be critical as manufacturers move to bring electric cars into the mainstream. Batteries are an expensive but vital component, so a reduction in car weight will mean fewer batteries will be needed to power the vehicle, saving on costs. "Lightweighting is a constant issue for us," said Masanori Matsushiro, a project manager overseeing body design at Toyota. "But we also have to resolve the issue of high manufacturing costs before we see an increased use of new, lighter-weight materials in mass-volume cars."A NEW PROCESS Researchers at Kyoto University and major parts suppliers such as Denso Corp, Toyota's biggest supplier, and DaikyoNishikawa Corp, are working with plastics incorporated with cellulose nanofibers — made by breaking down wood pulp fibers into several hundredths of a micron (one thousandth of a millimeter). Cellulose nanofibers have been used in a variety of products ranging from ink to transparent displays, but their potential use in cars has been enabled by the "Kyoto Process," under which chemically treated wood fibers are kneaded into plastics while simultaneously being broken down into nanofibers, slashing the cost of production to roughly one-fifth that of other processes. "This is the lowest-cost, highest-performance application for cellulose nanofibers, and that's why we're focusing on its use in auto and aircraft parts," Kyoto University Professor Hiroaki Yano, who is leading the research, told Reuters in an interview. The university, along with auto parts suppliers, are currently developing a prototype car using cellulose nanofiber-based parts to be completed in 2020.

Honda Civic overtakes Toyota Corolla as America's best-selling compact

The battle to claim October's best-selling compact sedan title has been won by the Honda Civic. The Japanese four-door sold 27,328 units, leaving the Toyota Corolla - September's title holder - in its wake with 23,637 units sold. In terms of year-to-date sales, the Civic sits at 280,899 units, with the Corolla trailing at 257,184 vehicles.
Sitting in third place, separated by a significant gap from the leaders, is the Chevrolet Cruze with 16,087 units sold. The Ford Focus earned fourth, with 15,108 units moved out of showrooms. (It is interesting to note that while the Civic and Corolla have both enjoyed double-digit sales increases year-over-year, the Cruze and Focus have seen significant decreases during the same period.)
Sales of the Hyundai Elantra hit 14,876 units, putting it in fifth place, with the Volkswagen Jetta earning sixth place with 11,710 units. Rounding out the ten top sellers were the Nissan Sentra (8,399 units), Mazda3 (7,647 units), Dodge Dart (5,617 units) and Subaru Impreza/WRX (4,923 units). The Kia Forte (4,706 units) and Volkswagen Golf (2,249 units), eleventh and twelfth respectively, have fallen behind.

Could high demand, low supply doom Toyota Mirai?

Toyota recently gave the world a behind-the-scenes look at the small-scale production of the Mirai hydrogen fuel cell sedan. A team of just 13 people assembles three of them per day, and the Japanese automaker is using this rigorous build process to prioritize quality for each one. Although, there's some concern about whether the Mirai could become a victim of its own, growing success. The company reportedly already has 2,000 orders for the Mirai just in Japan, and an anonymous Toyota executive tells Automotive News that the waiting list is now "two years or something" to receive one. Keep in mind, this figure is before customers elsewhere in the world have any requests in, and the US launch is planned for California this fall with sales in Europe starting this summer. The automaker is keeping North American demand somewhat in check by only planning to move 200 vehicles or fewer on the West Coast in 2015. So, unless Toyota can pick up the production pace, the waiting list seems likely only to grow longer. Automotive News speculates that the company might be in danger of Mirai customers losing interest if they are forced to build anticipation for too long. That especially could be the case with a new Prius likely to be unveiled by the end of the year that could lure folks away It seems that Toyota is trying to react to the higher-than-expected demand for its hydrogen-powered model, though. In December, the automaker invested $168 million to add two more assembly lines for the Mirai's fuel cell stack and hydrogen tank. Related Video: