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Mazda engineer wants new rotary to be turbocharged

Hope springs eternal for Mazda to revive the high-revving Wankel engine for a new sports car, and the company keeps feeding that thirst with hints that it could happen. To make the possibility even more tantalizing, Mazda drivetrain and powertrain assistant manager Tetsushi Marutani tells Motoring that he wants the updated mill to pack a turbocharger. "Personally, I think that a rotary with some turbo or compressor would be good," Marutani said to Motoring. "Because a rotary, in my opinion, they require more [torque at] low speed, low down torque. So if we have some small compressor or turbo it would help." Mazda hasn't sold a rotary-powered model since the RX-8 and hasn't had a turbocharged one since the third-generation RX-7. However, the recent RX-Vision concept (above) at least hinted at a possible Wankel revival, and Mazda officials confirmed that its engineers continued to develop the engine since the RX-8's demise. The RX-Vision used a next-gen rotary called the Skyactiv-R, but Mazda didn't officially confirm any details about it. Rumors suggested the engine had a two-rotor layout with a total displacement of 1.6 liters. A two-stage electric turbo and hybrid powertrain would allegedly boost the total output of around 450 horsepower. The electric assistance could also counter the Wankel's lack of torque at low revs and poor fuel economy. Those rumored specs sound fantastic, but we still take the rotary's return with a grain of salt. Mazda CEO Masamichi Kogai is adamant that it's not worth the company's limited resources to develop a niche sports coupe instead of better selling vehicles. Related Video:

Mazda's EV resistance may mean CAFE trouble ahead

Is Skyactiv the limit for Mazda? The Japanese automaker has ridden its gas-powered engine technology platform to the upper end of fleetwide fuel economy among automakers in the US. But the company's lack of electrification, either hybrids of plug-in vehicles, combined with increasing sales of crossovers, may limit future fuel-efficiency gains, Automotive News reports. Mazda has no plans to add battery-electric variants across its product line, the publication says, citing comments from Mazda North America CEO Masahiro Moro. So far, the dependence on Skyactiv has worked well, as Mazda was the second automaker - after electric-vehicle maker Tesla Motors – to meet the US fuel-economy mandate of 34.1 miles per gallon for 2016. Additionally, Mazda plans to unveil the second-generation version of Skyactiv next year. Using a technology called "homogenous-charge compression ignition" (HCCI), Mazda's gas-powered engines will approximate the compression in diesel engines, boosting fuel economy accordingly. Because of that development, Mazda's Moro is "very confident" that the company will meet the US Corporate Average Fuel Economy (CAFE) mandate for 2021. With no plans for US plug-ins or hybrids (Mazda's only hybrid, a variant of the Mazda3, is sold in Japan), Moro is not so sure about meeting the 2025 CAFE mandate of 54.5 mpg (which equates to a "real world" fuel economy of about 40 mpg). Additionally, Mazda's "biggest regulatory headache" will be meeting California's mandate that 15 percent of the state's new-vehicle sales be zero-emissions within the next decade. In 2011, Mazda laid out its strategy of leaning on its Skyactiv technology instead of moving to drivetrain electrification as a way to boost fleetwide fuel economy, saying at the time that "you can't out-Toyota Toyota and you can't out-Honda Honda." The company also took a strong stance against even the idea of electrification in vehicles. According to the US Environmental Protection Agency (EPA), Mazda's model-year 2015 vehicles averaged 30.1 mpg, beating out Honda's 28.9 mpg, Subaru's 28.7 mpg, and Nissan's 28.3 mpg. Mazda's fleetwide fuel efficiency increased from 29.4 mpg for the 2014 model year, and from 28.1 for the 2013 model year, according to the EPA. Related Video: Featured Gallery Mazda3 SkyActiv-Hybrid View 21 Photos News Source: Automotive News-sub.req. Green Mazda Fuel Efficiency Green Automakers Electric Hybrid skyactiv mazda hybrid mazda electric car

Autoblog Minute: VW finds CO2 'irregularities', Takata dropped by automakers, SEMA recap

Volkswagen's diesel emissions scandal gets a new wrinkle, US regulators hit Takata Corporation with a substantial fine, and we head to Las Vegas for a look at tuner paradise at the 2015 SEMA show. Autoblog senior editor Greg Migliore reports on this edition of Autoblog Minute Weekly Recap. Show full video transcript text [00:00:00] Volkswagen's diesel emissions scandal gets a new wrinkle. US regulators issue a significant fine to Takata Corporation. And we take a peek inside tuner paradise at the 2015 SEMA show. I'm senior editor Greg Migliore and this is your Autoblog Minute Weekly Recap. The VW diesel emissions scandal, first brought to light in September, gets a new wrinkle, as an internal investigation by the German automaker revealed [00:00:30] irregularities in CO2 emissions that could affect approximately 800,000 vehicles. VW estimates the issue could pose a 2-billion euro economic risk. VW claims that most of the vehicles affected have diesel engines, but industry analysts say a 1.4-liter gas engine is also affected. VW says that fuel consumption figures were set too low during the CO2 certification process. During all of this, sales of some diesel-powered Volkswagen, Audi, and Porsche models [00:01:00] have been halted. Takata Corporation is back in the news in connection with its deadly airbag scandal. Federal regulators fined Takata $70 million. If the parts supplier does not comply, the fine could balloon to $200 million. Takata was also dropped this week by its biggest customer, Honda. And now, Toyota and Mazda will be following Honda's lead in dropping Takata. We're also hearing that Mitsubishi and Subaru are considering a switch in air-bag inflator suppliers. SEMA 2015 [00:01:30] came and went. We saw offerings from Mopar, like the AWD Challenger concept. Honda unveiled a Ridgeline that it will race at the Baja 1000, which gives us a hint at what future production model could look like. The celebrity presence was also felt in Vegas as it always is. Kid Rock brought a Duramax Diesel Chevy Silverado, and Acura restored and presented Ludacris with his now famous 1993 Acura Legend. Those are the highlights from the week that was. Be sure to come back on Saturday for my full recap, [00:02:00] where I'll have some added insight into Hyundai's foray into the luxury sector. For Autoblog, I'm Greg Migliore. Autoblog Minute is a short-form video news series reporting on all things automotive.