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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.

Toyota 86 and Subaru BRZ successor canceled?

Rumors indicate that the Toyota 86 is done for. Japanese Nostalgic Car is quoting Japanese sources as saying Toyota and Subaru have parted ways regarding the 86 and that the current car's replacement is off the table. According to JNC, the Japanese magazine Best Car is readying a report that the 86/BRZ successor has been canceled. JNC also considers the fact that in Japan, there will be a four-cylinder, 197-horsepower version of the new Supra, ready to continue where the 86 will leave the market. Back in 2016 the automaker seemingly confirmed that a replacement for the rear-drive car was under development, but plans can change and with a cheaper Supra version for sale in markets outside the U.S., we have to wonder if the 86 replacement has been shelved. The 86, while balanced, has only received mild enhancements and not a lot of extra power during its near-decade long time on the market, and it isn't such a strong seller that it would necessarily merit the effort of Toyota developing a successor on its own, particularly without the help of a partner like Subaru or BMW. At the same time, Autocar quotes Toyota boss Akio Toyoda on the Supra: "At the end of the day, is there anything better than a tight rear-wheel-drive sports car? I hope this won't be the last Toyota sports car you see from us in the future." While that is far from a solid statement of Toyota's future intent, it paves the way to offerings below the Supra, and shows how much the company boss cares about driver involvement. There is a distinct possibility that the company will re-introduce the MR2 as an electrified, rear-drive sports car – which could still be a joint venture with Subaru, as Japanese Nostalgic Car theorizes. Whatever's in the pipeline – and we hope there is something in the pipeline – it seems Toyota's heart is in the right place: driving the rear wheels. Related Video:

Toyota Expands Airbag Recall To 2.2 Million Vehicles Worldwide

Was your Toyota inspected under the company's recall campaign for faulty airbag inflators last year? You might have another trip ahead to have it repaired again. The automotive giant says that it found "the involved serial numbers provided by the supplier were incomplete, and did not include all of the potentially involved inflators," according to its official announcement. That means more replacements are needed. Toyota's April 2013 inflator recall covered the Corolla, Matrix and Tundra from the 2003 and 2004 model years, the Sequoia from 2002 to 2004 and the Lexus SC 430 from 2002 to 2004. At the time, the company said it would need to inspect about 510,000 vehicles in the US but only expected to replace around 170,000 inflators. However, the latest announcement increases that figure to about 766,300 vehicles in the US. Toyota spokesperson Cindy Knight told Autoblog that the new amount is the combination of owners who need to have their vehicle looked at again and those who didn't come in for the initial recall. The company learned about the problem when Takata, the supplier, provided it with an improved list of the faulty part's serial numbers. According to The Detroit Free Press, the latest recall affects about 2.27 million vehicles from them worldwide. Knight said owners would receive notification of the problem around the end of the month but repairs would come in phases because the automaker doesn't have all of the necessary parts at the moment. The original problem occurred because the front passenger airbag inflator from Takata could have an improper propellant that could cause it to burst in an accident and not allow the airbag to deploy properly. Toyota inspected all the vehicles listed but only changed the inflators with specific serial numbers. Now, it's replacing them all. This wasn't just a problem for Toyota, though. Honda, Nissan and Mazda also used the faulty inflators and issued recalls at the same time. Autoblog has contacted the other Japanese automakers about whether similar campaigns are necessary for them. We will update this story, if we hear back from them. Scroll down to read Toyota's announcement. UPDATE: Honda spokesperson Jessica Howell sent along the following statement: Honda is aware that Toyota recently announced a recall of front passenger's airbag inflators. Honda is not aware of any incidents in our vehicles related to Toyota's action. We are currently investigating the potential implications to Honda vehicles.