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Mazda patent shows rotary placement in complex AWD hybrid layout

If we were playing alt-powertrain Bingo, a recent Mazda patent application filed in Japan would be one or two letters from victory. What's exciting about the patent, discovered by Japanese outlet T's Media via Motor Trend, is that while it makes a case for an internal combustion engine of any configuration, one of the drawings showing a rotary engine. The wild bit is that the whole powertrain comprises the ICE, a transaxle, two tiny in-wheel electric motors turning the front wheels, a third electric motor in the driveline, a capacitor, a lithium-ion battery, and three inverters. Motor Trend parsed the mechanics, and the way it reads, Doc Brown couldn't have done a better job. The rotary engine at the front turns the rear wheels, but not directly. Instead of a flywheel on back of the engine, the drawing shows a 25-kW electric motor and an inverter, then a driveshaft running to the transaxle. Along the axis of the transmission tunnel in a normal car, between the inverter and the transaxle, lies a 3.5-kWh battery running at 48 volts. MT writes that the electric motor can add its output to the ICE output to drive the rear wheels, or the e-motor can turn the rear axle on its own. Up front, two inverters and a double-layer capacitor join the ICE in the engine bay. The capacitor and tiny hub motors in the front wheels run at 120 volts, a higher voltage than the rest of the electrical system, so that the small in-wheel motors can generate the same torque as a larger motor running at a lower voltage. The AWD system acts on-demand. Given the signal, the capacitors discharge their energy to the wheel motors, and recover energy from braking. When the capacitors are at full charge, they send excess regen energy to the lithium-ion battery; conversely, the battery can recharge the capacitors when they're low and the front hub motors need power. The patent explains that the ICE works with the rear e-motor to drive the rear wheels at low speeds, the front motors called on to "generate an output only when a large output is required in the high vehicle speed range." The rather complicated system is focused on providing the benefits of a hybrid system and all-wheel drive, but at lower weight than one would expect. A rotary serves due to its compactness, but one of the drawings shows an engine with a V layout. Hub motors get dinged for adding unsprung weight, hence the small motors here.

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

2016 Mazda MX-5 Miata named World Car of the Year

Kicking off Day Two of the New York Auto Show, the World Car of the Year awards are finally being handed out. The overall winner is, as God himself intended, the Mazda MX-5 Miata. It beat the Audi A4 and the Mercedes-Benz GLC-Class. The unique thing about these awards are that they aren't limited to the US domestic market (that's why they're called the World Car of the Year awards). For example, nominees for the overall award included the Skoda Superb, Renault Kadjar, and Subaru Levorg. In the Performance category, the forbidden fruit was repped by the Honda Civic Type R. But both the Civic and the Mercedes-AMG C63 Coupe were beat out by a far more expensive competitor – the new Audi R8. The fourth-generation Toyota Prius and the second-generation Chevrolet Volt, were two of the big finalists for the World Green Car of the Year award. They both lost out, though, to the Mirai fuel-cell car. Yes, a hydrogen car beat out two of the world's premiere hybrids. The luxury race that was perhaps the hardest to predict. That's because each of the three finalists have received near universal acclaim. In the end, though, the BMW 7 Series beat out the Audi Q7 and Volvo XC90. Finally, we have the World Car Design of the Year, where the overall winner (MX-5) and the Mazda CX-3 faced off against the new Jaguar XE. While both the CX-3 and XE are handsome vehicles, the WCOTY committee realized the answer is always Miata, and awarded Mazda's iconic roadster another 2016 award. Related Video: AND NOW THERE IS ONE... MAZDA MX-5 - 2016 WORLD CAR OF THE YEAR NEW YORK – March 24, 2016 - For Immediate Release The Road to World Car journey ended today with the declaration of the MAZDA MX-5 as the 2016 World Car of the Year. The winner was announced during a press conference hosted by the New York International Auto Show, Bridgestone Corporation and Autoneum. 2016 marks the 10th anniversary of the partnership between World Car and the New York show, and the third consecutive year that the World Car Awards have retained their ranking as the number one automotive awards program in the world in terms of media reach. Mazda Motor Corporation is no stranger to the World Car Awards program – now in its 12th year. The Mazda2/Mazda Demio was the 2008 World Car of the Year. While the Mazda3 (2014), Mazda6 (2013) and Mazda MX-5 have all earned "Top Three in the World" status as voted by our 70 plus international automotive journalists that make up the jury.