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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 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.

2019 Mazda MX-5 Miata may be getting 181 hp

Even though the current 2018 Mazda MX-5 Miata makes only 155 horsepower, our experience has shown that it's more than enough fun with its modest output. Still, if Mazda were to offer more, we wouldn't turn it down, and it appears that's exactly what will happen for the 2019 Mazda MX-5 Miata. Road & Track dug up a VIN filing from Mazda to NHTSA with information about the Miata for that model year. On one of the pages, it states that the 2019 Miata will have a 2.0-liter four-cylinder making 181 net brake horsepower. That's a pretty big jump from 155 horsepower, nearly matching the larger 2.5-liter engine in the Mazda3 and Mazda6. It's also close in power to the estimates for the Skyactiv-X spark-controlled compression-ignition engine. But, based on what a journalist on Twitter posted, the 2019 Miata will continue to use a version of the existing spark-ignition Skyactiv-G engine. Apparently it will have a new cylinder head, be able to rev higher, and make more horsepower, though he didn't say how much more. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. We've reached out to Mazda for comment on this discovery, and, like with most car companies, wouldn't give comment since the topic regards a future product. If it does turn out that Mazda won't up the horsepower for 2019, the good news is that the aftermarket has speed demons covered. Flyin' Miata offers a package that includes camshafts, exhaust and a tune that will bring it up to about 200 hp. There's a supercharger kit from Edelbrock that will provide similar power, but without the need for digging into the engine. Flyin' Miata also offers a turbocharger kit that can bring the Miata up to nearly 250 hp, and if you're really speed-crazed, the company can swap in a Chevy LS V8 with more than 500 hp. Or, you know, you could just be happy with 155. Related Video: Featured Gallery 2016 Mazda MX-5 Miata Club View 32 Photos News Source: Road & Track, Twitter Mazda Convertible Coupe Performance