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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.

GM repairing 40,500 Pontiac Vibes as part of Toyota airbag recall

General Motors has confirmed to Autoblog that the Pontiac Vibe is included in Toyota's just-announced recall action. The Vibe and the Toyota Matrix share a large number of parts, including the affected cable to the airbag.
"About 40,500 Pontiac Vibes from the 2009-2010 model years are included in the Toyota recall. Toyota designed and engineered the Vibe for Pontiac. GM will service customers with these vehicles when Toyota makes the parts available," said GM recall spokesperson Alan Adler to Autoblog in an email.
The recall covers 1.3 million Toyota units in the US, including 2009-2010 Corolla, Matrix and Tacoma, the 2008-2010 Highlander, the 2006-2008 Rav4 and 2006-2010 Yaris, plus the addition of the 2009-2010 Vibe. The models all have their airbag module attached via a spiral electrical cable. The connections on this cable can be damaged when turning the steering wheel. Once broken, the airbag deactivates and the airbag warning light comes on. Toyota has an improved part, but it's still making preparations to begin repairs. It will begin notifying owners soon.

Has the auto industry hit peak hybrid?

Hybrids are known for their great fuel economy and low emissions, but it looks like given current market conditions, only about three percent of new car consumers are willing to pay the premium for them. A new study from IHS/Polk finds that the hybrid market share among overall US auto sales are falling, despite more models with the technology on sale than ever before.
The study examined new car registrations in March from 2009 through 2014. In that time, the auto industry grew from 24 to 47 hybrid models available to consumers, but market share for the powertrain remained almost stagnant in that time. As of 2009, hybrids held 2.4 percent of the market; it fell slightly to 2.3 percent in 2010 and grew to 3.3 percent in 2013. However, 2014 showed a drop back to 3 percent. Overall hybrid sales have been growing since 2010, but they just aren't keeping up with the total auto market.
According to IHS/Polk, this isn't what you would expect to see. Usually, each new model in the market brings along with it a boost in sales. The growth in hybrid models 2009 to 2014 should have shown a larger increase in share for the segment.