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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.

Japanese students turning Mazda CX-5 into Dakar Rally-ready off-roader

Students at Japan's Nihon Automobile College (NATS) are transforming a first-generation Mazda CX-5 into a full-blown off-roader that looks ready to compete in the Dakar Rally. Named CX-Runner, the one-of-a-kind model will make its debut at the Tokyo Auto Salon opening its doors in January 2020. The Tokyo Auto Salon is the Japanese equivalent of the annual SEMA show, so anything goes under the bright lights. NATS students began the CX-Runner project with a used 2012 CX-5 and seemingly set out to leave as few original parts as possible. While the project isn't finished yet, a sketch released by the school suggests the crossover will receive wheel arch extensions, an external roll cage, a beefier suspension, and a shorter front bumper that increases the approach angle.  Photos published on the school's official Facebook page show the project is moving along nicely. The body extensions are made with a composite material that looks like Kevlar, and fitting the rear wheel arches required sealing the back doors, which is fine; the CX-Runner will be a two-seater. We don't know if students are planning to make changes to the CX-5's powertrain yet, but a thick skid plate will protect whatever is under the hood from expensive impacts with obstacles encountered off-road. nats-mazda-cx-runner-project-1 View 3 Photos The Tokyo Auto Salon will open its doors on January 10, so the students have time to finish the custom-made body kit, install the suspension, paint the CX-Runner, and fit the roll cage. They're not just doing this for fun, though. NATS began offering a customizing class in 1998, and building a tuner car is one of the requirements aspiring builders need to fulfill in order to graduate. With that in mind, it's no surprise that NATS will again have a big presence during the 2020 edition of the Tokyo Auto Salon. In addition to the CX-5 off-roader, its students are building six custom cars including a Nissan 370Z roadster wearing front and rear fascias sourced from a GT-R, a Toyota 2000GT-inspired convertible based on the Suzuki Cappuccino kei car from the 1990s, and a four-door, five-seater Toyota 86 built on Camry bones but powered by the coupe's flat-four engine. Relate Video:

Autoblog Podcast #523 | BMWs, Trackhawk and Mazda's new engine technology

On this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Joel Stocksdale. We discuss a couple of BMWs, the upcoming BMW X7 three-row SUV and our short-term BMW M760i with a turbocharged, 600-horsepower V12. We also cover the week's news, including Mazda's nifty engine technology it will roll out in the next few years, as well as pricing on the new Jeep Grand Cherokee Trackhawk. The rundown is below. Remember, if you have a car-related question you'd like us to answer or you want buying advice of your very own, send a message or a voice memo to podcast@autoblog.com. (If you record audio of a question with your phone and get it to us, you could hear your very own voice on the podcast. Neat, right?) And if you have other questions or comments, please send those too. Autoblog Podcast #523The video meant to be presented here is no longer available. Sorry for the inconvenience.Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Topics and stories we mention Rundown BMW X7 Spy Shots Volkswagen Passat GT Mazda's future engine technology Jeep Grand Cherokee Trackhawk Pricing BMW M760i driving Ram 2500 driving Spend My Money Feedback Email – Podcast at Autoblog dot com Review the show on iTunes