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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.

Car Club USA: Miatas at Mazda Raceway Laguna Seca

The Mazda MX-5 Miata is a very popular car for weekend warriors looking for the thrill of automotive racing in an affordable package. These iconic, rear-wheel-drive roadsters are lauded by enthusiasts for their driving dynamics, reasonable price, and plethora of available parts. That's why the annual Miatas at Mazda Raceway Laguna Seca track event draws such a diverse cross section of drivers from allover the country. But, still, some types of drivers are more well-represented than others. "I usually am the only female signed up for the high-performance driving," said Carolyn Kulaja of Gila Monster Racing. "The car doesn't care the gender of the person driving." For Carolyn, racing Miatas is a passion that developed later in life, but she's not slowing down anytime soon. "My first racecar was car number 57, which was my age when I started racing," said Carolyn. "The 88 I decided was going to be my age when I quit racing." Young competitor Kyle Koh of Infotech Motorsports has his own reasons for racing. "Driving has changed my life in a major way," said Kyle. "It took me out of a depression." Kyle's first competitive fire was directed toward football, but after breaking his back during his sophomore year of high school, he had to find another outlet. "Kyle came to me one day and he decided that he wanted a project car," explained Kyle's father and racing partner Larry Koh. "Because the Miata community is so friendly to begin with, it becomes a big family." How will Carolyn and Kyle fare through Laguna Seca's infamous corkscrew? Find out on this episode of Car Club USA. Each Car Club USA episode features a different car club or event from across the US, where passionate owner communities gather to share automotive experiences and embark on incredible adventures. From Main Street cruises to off-road trails, catch all the latest car club activity on Autoblog.

Mazda previews 2016 Miata Global MX-5 Cup racer

At this point, we all know that the Mazda MX-5 Miata is a highly capable racing platform. Mazda even claims that the car is the most road-raced model in the world. Fittingly, then, the Japanese brand is making a huge announcement about the future of motorsport for its next-generation convertible. The MX-5 Cup is going worldwide in 2016 as the MX-5 Global Cup, and all of the racers are getting behind the wheel of the upcoming fourth-gen Miata, similar to the gorgeous redhead pictured above.
"It has long been our goal to see Mazda fans around the world competing in identical MX-5s, and the launch of the 2016 MX-5 Miata is the perfect time to make this goal a reality," said Masahiro Moro, Managing Executive Officer in charge of Global Sales, Marketing and Customer Service for Mazda in the company's announcement.
The racing version makes its grand debut at this year's SEMA show, although at the moment it's really more of a concept. Mazda confirms that the racer uses the 2.0-liter SkyActiv four-cylinder, but the other important parts like tires, suspension and safety equipment are not yet determined. The cars "will be sold ready to race from a single supplier," according to automaker's announcement for the series.