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Feds investigating 2010-11 Mazda CX-9 CUVs over braking issues

The National Highway Traffic Safety Administration is investigating 62,000, 2010-2011 Mazda CX-9 models over brake problems. The government safety watchdog says it has received seven complaints of an observed loss of power braking power to stop the crossover, according to the The Detroit News.
The NHTSA complaints say that the problem causes a hard pedal, increased braking effort and reduced braking effectiveness. Some complaints allege that they hear a hissing noise during braking similar to the sound of air leaving the tires. No injuries or crashes have been reported.
"As always, we are fully cooperating with NHTSA on their investigation. We cannot comment further at this time," said Mazda spokesperson Tamara Mlynarczyk to The Detroit News.

Mazda teases electric car again with peek at interior

Mazda is again touting the new electric vehicle it plans to reveal at the Tokyo Motor Show, this time teasing it from the inside. A 15-second video homes in on features found on the center console, namely, the blocky shifter for the automatic transmission, a large, knurled rotary dial for infotainment control, and a smaller dial we'll assume is for volume control. As for what else we can make out, if we were to guess, we'd say the slick surface to the right of the shifter is a screen. It'll be interesting to see how Mazda designers filled the space between the seats, but we're surprised Mazda went with such a substantial shifter; this being an EV on a new, dedicated platform, designers could have minimized the focus on shifting and opened up a host of other uses.  A brief press release informs us that Mazda's worked to liberate the cabin from structural clutter, though. The brand says the interior is "designed to give occupants a feeling of being 'enveloped in openness,'" and that the "goal [is] to make spending time in the car a comforting experience that allows customers to be themselves." Empty spaces throughout the center console "create a connection between the driver and passenger seat areas," so perhaps what looks like a free-floating console demo section in the video is what the unit will look like in the car. Elsewhere, the EV will feature eco-friendly materials. The EV isn't expected to make it to America, its powertrain designed to satisfy residents of particularly dense urban environments. The running gear should stick close to the drivetrain developed for the e-TPV prototype, meaning a 35.5-kWh battery powering a single electric motor at the front axle producing 138 horsepower and 195 pound-feet of torque, and a single-speed transmission. Range is thought to be around 120 to 150 miles on a charge. The onboard charger can handle 6.6-kW home charging and 50-kW rapid charging. Eventually, a range-extender version with a rotary engine should join the lineup; Mazda said it chose a rotary because even though it's less efficient than competitors' ICE range extenders, it's so much quieter. The debut of what everyone expects to look like a crossover happens on Oct. 23.

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.