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Mazda patents show rotary engine for range-extended EV

Two years ago, Mazda introduced a fascinating range-extended electric car called the Mazda2 RE Range-Extender. It took an electric Mazda2, and dropped in an itty-bitty 330cc rotary engine. It wasn't the rotary-powered sports car we had hoped for, but it seemed like a unique way to keep the quirky engine alive and kicking. But not long after the car's reveal, it seemed to disappear. Now the basic idea has resurfaced with a few modern updates in a couple of US patents. The first patent is pretty straightforward and describes a range-extended EV similar to the BMW i3. At the front is an electric motor driving the front wheels. At the back is an internal combustion engine that powers an electric generator. In the middle is a lithium-ion battery for storing and delivering electricity. It's the same set-up as that Mazda2. The second patent is for an engine start-and-stop system, but specifically for rotary engines. The system is designed to shut off a rotary engine when not needed, much as modern piston engines do. It also stops the rotor in a position that closes the intake port to ensure no fuel or exhaust emissions slip out through the intake tract. This is necessary since there are no valves in a rotary, and air and exhaust come through ports that are "opened" and "closed" by the rotor itself. The patent also describes the possibility of firing a spark plug after the fuel has been cut to eliminate any leftover fuel emissions. This system would theoretically improve a rotary engine's fuel economy and emissions significantly, which would be a boon as those are two of the rotary's major weaknesses. The rotary-engine patent also includes the same range-extended powertrain drawing as the first patent. It's there as a description of a possible application. And in such an application, where the rotary wouldn't have to run all the time, the system could take advantage of the rotary's inherent strengths. Weight can be kept low thanks to the engine's small dimensions, which should help in keeping the car sprightly and efficient. Rotaries are renowned for smoothness, too, so it shouldn't need too much refining and sound deadening, the latter of which adds more weight. The small size would also help with packaging, leaving more space for people, cargo, or possibly batteries. And since it has been patented, the company may be looking to bring the system to market.

Mazda RX-9 could be a 400-hp, 2,900-pound coupe due in 2019

Mazda poured fuel on the white-hot rumors of an RX-8 successor with the RX-Vision earlier this year. The long, low rotary-powered coupe was lovely, but as we reported, it wasn't going to happen. But now, there's another chapter in the RX rumormill, and like overnight parts, it's from Japan. Japanese site Holiday Auto claims that Mazda will debut the so-called RX-9 at the 2019 Tokyo Motor Show. But before that happens, the Zoom-Zoom company will preview the production model with a concept at next year's Tokyo Motor Show. 2017 is important, marking 50 years since Felix Wankel had the screwy idea for his eponymous engine and 40 years after the company's first rotary powered car, the Cosmo, hit the market. Exciting as Holiday Auto's report is, the stats on this long-rumored car are better – via Google Translate, the Japanese site claims the RX-9 will use a 1.6-liter, two-rotor Wankel with a single turbocharger. It's good for around 400 horsepower. Holiday Auto isn't exaggerating when it claims the car could have "bike-like acceleration." As with other Mazda products, a low curb weight is key, which is why engineers are targeting a meager 1,300 kilograms (2,866 pounds) for the production model – that weight should be pretty evenly split, too, thanks to a rear transaxle. So yes, the RX-9 will be stupid fast and extremely agile. But it will come at a cost. And by cost, we mean that the RX-9 will start just south of eight million yen. That's $79,641 at today's rates, or enough to purchase about 2.5 RX-8 R3s, the hardcore handling trim of Mazda's last-gen rotary car. And if Mazda follows Nissan's GT-R pricing model, we'll see a six-figure RX-9 by 2025. When it comes to Mazda rotary rumors, grains of salt are a must. That's doubly true when we're talking about a possible concept that won't debut for over a year. But with the RX-Vision, Mazda showed that it hasn't abandoned rotary power, and with 2017 marking a big anniversary for the technology, it seems unlikely that the company will let the date pass without some acknowledgement. A concept car seems like a solid bet. Related Video:

Which car companies are creating new jobs in America?

Since January, automakers have announced investments totaling $9.5 billion in U.S. plants, creating or retaining more than 12,000 jobs. Some of those companies have yet to announce just how many jobs will be created given their investments, with the location of many of those jobs still to be determined. Specifically, the 4,000-job Toyota-Mazda joint venture plant still hasn't announced its location, with numerous states jockeying for it. Hyundai has plans to invest $1 billion but has not announced a jobs number yet. And likewise Ford is investing $1.2 billion in Michigan without specifying a number of jobs. Volvo this week announced plans to add a second line to its factory under construction in South Carolina, spending another $500 million and adding 2,500 jobs to the 2,000 it was already trying to fill. Then Thursday, Daimler announced a $1 billion expansion to its facility in Tuscaloosa, Ala., to produce EV batteries and electric SUVs, a move that will add 600 jobs to its hiring this year. Above, we've created a handy pie chart showing you which companies have announced new jobs and how many there will be. Reporting by Paul Lienert in Detroit News Source: Reuters Plants/Manufacturing BMW Chrysler Ford GM Honda Hyundai Mazda Mercedes-Benz Toyota Volvo jobs