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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 Miata getting i-ELOOP regenerative 'braking' in more markets

The Mazda MX-5 Miata is getting the company's i-ELOOP regenerative "braking" system in more overseas markets. A few months ago, the company announced it for the Japanese market, and this week it announced the U.K. will have the feature, too. This has us curious as to whether it will be offered on U.S. market Miatas. We've reached out to Mazda, and we'll update this story if and when we hear back. As a quick refresher, i-ELOOP is a system that was introduced here on the Mazda6 several years ago, and it adds a capacitor to store electricity generated by the alternator during deceleration (hence our earlier use of quotes around "braking") that can be used to run interior accessories such as the sound system and climate control. Then, with power coming from the capacitor, the alternator can be disengaged, improving the efficiency of the engine by reducing drag. And by using a capacitor rather than a battery, the system is more compact, lighter and able to recharge faster than a similarly capacious conventional battery. As for effectiveness, the Mazda6 with i-ELOOP managed to get about 5% more miles per gallon on the highway than one without, going from 38 mpg to 40 mpg. While not a massive improvement, it was a measurable, possibly noticeable one. Applying a similar gain to a Miata would increase fuel economy from 35 to nearly 36.75 mpg on the highway, based on the automatic-equipped car's numbers. The manual would go from 34 to nearly 35.7. The i-ELOOP system is standard on all new Miatas in the U.K., which includes the 1.5-liter and 2.0-liter engines with either the manual transmission or automatic. Strangely, only automatic-equipped cars get it in Japan. This means Mazda could offer it on both transmission options in the U.S. Probably the key consideration will be cost. The system, when it launched in the U.S., was only available on the most expensive Mazda6, and even then it was an extra-cost option. And looking at pricing for the U.K. Miata soft-top and comparing equivalent trim levels, the price has increased between GBP2,800 and GBP4,100. The new model does get some new standard safety features, too, but we expect the i-ELOOP system is a significant contributor. If it is offered in the U.S., it might only be available as an option, and possibly only on the more expensive trim levels to keep lower trims more affordable. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

CES Part 2: Honda/Sony Afeela, BMW i Vision Dee and more | Autoblog Podcast #763

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor James Riswick and Associate Editor Byron Hurd. This week, they pick up from last week and dig deeper into some of the reveals and news coming from this year's Consumer Electronics Show (CES) including the Ram 1500 Revolution, the Afeela EV collaboration from Sony and Honda, Peugeot Inception, BMW i Vision Dee and VW ID.7, among other highlights and musings from the show. They also discuss the cars they've been driving, including the BMW iX, Mercedes EQS SUV, two-door Bronco Badlands, Mazda CX-50 Meridian Edition and Toyota RAV4 Wilderness Edition. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #763 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown CES 2023 Ram 1500 Revolution Sony Honda Mobility Afeela EV prototype Peugeot Inception BMW i Vision Dee Volkswagen ID.7 Cars we're driving 2023 BMW iX 2023 Mercedes EQS 450 SUV 2022 Ford Bronco Badlands Two-Door 7MT 2023 Mazda CX-50 Meridian Edition 2023 Toyota RAV4 Woodland Edition Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Podcasts CES BMW Ford Honda Mazda Mercedes-Benz RAM Toyota Volkswagen Peugeot Truck Coupe Crossover SUV Concept Cars Electric Luxury Off-Road Vehicles Performance Sedan Afeela