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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.

2014 Mazda3 breaks cover early, in Euro-spec at least

We're set to get a closer look at the US-spec 2014 Mazda3 later today, but AutoExpress has the first peek at the machine's European cousin (after initial leaks reportedly came from a Czech outlet). The photos show a compact that's taken plenty of design inspiration from its older sister, the Mazda6. That's excellent news, as the larger car's dynamic front fascia, accentuated fender arches and long nose translate well to the Mazda3. Inside, there are are new and improved material choices, and the longer wheelbase means occupants get to enjoy more room than before. There's also a larger trunk with 12.3 cubic feet of cargo capacity.
Buyers in the EU can get their hands on a 1.5-liter Skyactiv-G gasoline engine with 99 horsepower, though the old 2.0-liter four-cylinder will still be available in either 118 hp or 163 hp configuration. A 2.2-liter diesel tops out the engine choices.
The 2014 Mazda3 is lighter than its predecessor and boasts disk brakes and a multi-link rear suspension on every trim. That means this thing should be fun to shuffle around. Stay tuned for details on the US-spec variant later today, including a lot more images of the good-looking hatch.

Mazda engineer explains why there won't be a Mazdaspeed3

When Mazda put the new, beautiful Mazda3 on its stand at last year's L.A. Auto Show, it didn't take long before someone asked about a Mazdaspeed3. It took even less time for the Japanese automaker's new global boss, Akira Marumoto, to cite his company's small size and say, " [My] answer would be no." During first drives of the compact hatch last month, Road & Track asked Mazda development vehicle engineer Dave Coleman what Mazda would need in order to resurrect an MPS version. Coleman detailed a few reasons for the Mazdaspeed's continued hiatus, the prohibitive cost foremost. But another hitch is that the Mazdaspeed we'd get now isn't the Mazdaspeed enthusiasts would want. Coleman told the magazine, "If we had an engine on the shelf that would fit that properly, then we could talk." But the price to develop an engine and supporting hardware to do the car right isn't in the budget for an automaker of Mazda's size. Perhaps more important, though, present-day Mazda wouldn't — and couldn't — whip up another raw, rapid hatch. The competition, and consumers, have changed. "Even the Mazdaspeed 3, in its last iteration, came out as raw as it did due to the constraints," Coleman said, and today's market won't put up with that kind of buzzy, excitable uncouth anymore. The question is, even if Mazda had the money, do the buyers pining for a zoom-zoomier Mazda3 want the mature, composed hot hatch they'd be offered? Head over to Road & Track to read Coleman's take on the matter, and how he lays out the gap that would swallow any potential MPS as, "What you think you want is rawness. What you really want is responsiveness and directness." Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.