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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 expands scope of vehicles affected by Takata airbag recall to 330k

Earlier this week a Reuters report indicated that Mazda was considering a nationwide expansion of its recall for vehicles equipped with Takata airbag inflators. The company has now confirmed said expansion, with the vehicle count jumping from 86,770 to 330,000 affected in the US. As before, the affected vehicles are Mazda6 and RX-8 cars from the 2004 to 2008 model years. Mazda reports that Takata has tested a "large number of inflators removed from Mazda vehicles" and not found any to be "non-compliant" as of yet. With that said, the company also reports in its statement that one 2005 Mazda6, located in Florida, has been identified as having had an "abnormal" deployment of the driver's side airbag. For what it's worth, though the company's statement references the Takata inflator issue as a proper recall, it is calling its own program of notification a "Safety Improvement Campaign" for the moment. Find the full, if brief, Mazda press release in the form below. UPDATED MAZDA STATEMENT REGARDING TAKATA AIRBAGS Dec 11, 2014 WASHINGTON, DC (December 11, 2014) – In addition to the actions announced on December 4, 2014, as discussed in a separate document, Mazda today announced the following steps in the Takata recall: Mazda will institute a nationwide Safety Improvement Campaign of 2004-2008 model-year Mazda6 and RX-8 models equipped with certain Takata airbag inflators. The nationwide Safety Improvement Campaign will cover the driver's-side airbag inflator, as Mazda has not made a safety defect determination at this time. This action will support us to gather additional parts for examination and to promote customer satisfaction and safety. There are approximately 330,000 vehicles included in this Safety Improvement Campaign in the United States So far, Takata has tested a large number of inflators removed from Mazda vehicles, and NONE have been found to be non-compliant at this time One vehicle – a 2005 Mazda6 located in Florida – has been identified as having experienced an abnormal driver's-side airbag deployment. Mazda has worked closely with NHTSA on this situation Mazda will participate in the independent, industry-wide joint testing program for Takata airbag inflators For history, on December 4, 2014, Mazda announced: It would expand the area of the high-temperature, high-humidity region recall to include the Gulf Coast states.

Turbo Mazda6 starts at $30,090, only base trim gets manual

We learned last fall that the 2018 Mazda6 is getting a slew of updates to its appearance and refinement, as well as introducing this generation's first turbocharged engine (may we never forget the old Mazdaspeed6). Now we know how much it will cost to get that 2.5-liter four-cylinder's 250 horsepower and 310 pound-feet of torque: $30,090. This is the base price of the Mazda6 Grand Touring, which is the entry trim level to this engine. In fact, the Grand Touring will only come with the turbo engine, as will the new Grand Touring Reserve and Signature trim levels. The base-level Sport trim and higher-level Touring will only come with the naturally aspirated 2.5-liter four-cylinder (187 hp, 186 lb-ft of torque) that now comes with cylinder-deactivation. Every Mazda6 will receive a comprehensive series of updates when it arrives at dealerships this April. The revised Sport, which comes with cloth manual seats, dual-zone climate control, 17-inch alloy wheels, LED headlights, blind-spot warning, rear-cross traffic assist and low speed automatic emergency braking, is only $5 more than the outgoing 2017.5 model for a new base price of $22,840. The optional automatic adds another $1,050 to the price. Moving up to Touring limits you to only the automatic transmission and adds 19-inch alloy wheels, leatherette upholstery, a power driver's seat, heated front seats, a sunroof, and rear air vents. It starts at $26,590, $455 more than the outgoing model with the optional automatic. Moving up to the Grand Touring brings us to the turbo engine. It also adds an 11-speaker Bose sound system, navigation, heated side mirrors, and an auto-dimming driver's mirror. It also gets shift paddles on the steering wheel, so although the turbo engine won't be available with a manual, there will be a way to conveniently shift gears. Its price is $30,090, and as a point of reference, the cheapest Honda Accord with the 2.0-liter turbocharged engine starts at $31,200 with either a manual or automatic transmission. The Grand Touring Reserve comes in at $32,590. This trim adds a heads-up display, rear spoiler, windshield wiper de-icers, heated steering wheel, heated rear seats, real leather upholstery, and power adjustment and ventilation for both front seats. The range-topping Signature starts at $35,640 and adds Nappa leather, UltraSuede trim, parking sensors, 360-degree camera views and a configurable instrument screen. Related Video: This content is hosted by a third party.