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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.

Mazda LM55 Vision Gran Turismo reshapes a winning form [w/video]

In the history of endurance racing, there's only ever been one Japanese automaker to win the famous 24 Hours of Le Mans, and as you might have guessed, that was Mazda in 1991 with the 787B – which was, incidentally, the only one ever to win the race under rotary power, or really anything other than a conventional piston engine. That racing success is something Mazda can be proud about, even over two decades later, and it's a badge of honor the automaker is revisiting with the LM55 prototype you see here. Only instead of unleashing it on the Circuit de la Sarthe – or really any actual race track – the Mazda LM55 Vision Gran Turismo is bound only for PlayStation. The latest addition to the Vision Gran Turismo lineup, the LM55 takes inspiration from the aforementioned 787B but gives it a modern KODO design theme. The result is pretty stunning, taking a more radical approach than the Skyactiv Prototype the company is fielding in the United SportsCar Championship or even the dearly departed, head-turning Furai concept. But unlike that diesel prototype and the Wankel-powered 787B, Mazda hasn't specified any kind of novel powertrain for the LM55, fictitious or otherwise - saying only that it has "advanced drive train technology that offers the epitome of power, efficiency and durability and the result is an exceptional power to weight ratio exceeding that of most cars in its class." Just what that class would be we'll likely never find out, but if you don't have a PS3 loaded with GT6 (or, for that matter, even if you do), you can scope out the virtual action in the slideshow above and the rather Christmas-y video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Featured Gallery Mazda LM55 Vision Gran Turismo View 23 Photos News Source: Polyphony Digital Toys/Games Mazda Concept Cars Racing Vehicles Videos Gran Turismo gt6 vision gran turismo

Mazda considering a 'hyper' Mazda3 with the 250-hp 2.5-liter turbo four

Mazda boss Akira Marumoto said last year there'd be no Mazdaspeed version of the new Mazda3 because the hot hatch segment wasn't a priority for the carmaker. Then Mazda engineer Dave Coleman told Road & Track that without "an engine on the shelf that would fit properly," an MPS variant made no sense. The first reader comment on our Coleman post read, "Engine — you have it; cue up the 2.5T." Mazda might have been listening. Program manager Kota Beppu told Autocar he'd like a "hyper" Mazda3, the outlet figuring the 2.5-liter four-cylinder turbo would make the most sense for power. Autocar wrote "the project had not been officially signed off, [but] insiders suggest that is a formality." When Car and Driver queried Mazda and its sources about the report, the magazine realized "the company is seriously considering a high-performance hot hatch." What's more, "Drew Cary, senior manager for brand communications, said, 'We encourage people to ask for it, though. Our planners and executives are watching and listening to fans.'" The turbocharged 2.5-liter SkyActiv-G four-cylinder — which doesn't sell in Europe — makes 250 hp on premium gasoline and 310 pound-feet of torque in the Mazda6, CX-5 and CX-9. A next-generation SkyActiv-G is predicted on the way next year, bringing more boost and power. Even as is, we're talking a chunky lump of power to send to the front wheels, and Beppu mentioned torque steer. The new Mazda3's all-wheel drive would alleviate that bugbear. Unlike the raw, fast-twitch reflexes of the last Mazdaspeed3 from 2013, Beppu says a new model "needs to be responsible and friendly ... more friendly than a Golf GTI." And, "It should be fast." The polished looks and interior address the necessary perceptions. CD's done the math on the current 2.5-liter and predicts a five-second sprint to 60 miles per hour, which is Volkswagen Golf R and Honda Civic Type R territory, so GTI comparisons could be a case of aiming low. Imagine a 300-hp engine with a touch more torque and a six-speed manual ... If Mazda follows through with such a product, it could take two years to get the green light. However, we're told that Mazda's Los Angeles research and development center has already built a proof-of-concept to encourage and anticipate that green light.