Auto blog

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.

Toyota RAV4 "Adventure" brings the butch

Just last week, your humble author had a 2013 Toyota RAV4 in his garage, and he couldn't help noting that even in mid-level XLE trim, its aesthetics lacked oomph, due in large part to its cheap-looking black bumpers and airy-looking wheel wells. Judging by the RAV4 "Adventure" on display at the Geneva Motor Show, someone at Toyota must've been thinking the same thing.
With Japan's biggest automaker understandably focused on bigger reveals, information on this butched-up softroader has proven to be hard to come by, with no press materials whatsoever. We don't even know if this is a pure concept or if it's actually being considered for production. Either way, we approve. The 20-inch dark-finish alloys probably don't do much for ride quality, but they certainly look nicely aggressive, as does the new lower fascia with its prominent lower lip. Other changes include beefier wheel arches, side rails, headlamps with integrated LEDs, twin-element fog lamps and mesh grille inserts. All of the changes are quite well integrated - enough so that the Adventure largely avoids looking like a SEMA refugee in person.

Toyota's Euro Aygo spied in prototype form

The five-door version of the next-generation Toyota Aygo, a Euro offering cloned by the Peugeot 107 and Citroën C1, has been caught out on the town wearing all black. Facelifted early last year, predictions are that the next version of the city car will be slightly lower and wider than the current car, with improved ergonomics and materials. Based on what little can be seen for now, a new intake and headlight treatment should be on the menu in front, with taillights placed higher on its backside.
A three-door version is expected, but a gasoline-hybrid model is also rumored, along with power and fuel economy improvements to the three-cylinder engine that presently puts out 67 horsepower and 69 pound-feet of torque.
We should see it next year, along with the new Citroën C1 and Peugeot 108.