2004 Mazda Rx-8 Base Coupe 4-door 1.3l on 2040-cars

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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.

Long Road Racing will build you the Miata that Mazda won't

One of the frustrating things about new cars today is that many features are exclusive to this trim level, or that package. Even the enthusiast-friendly Miata has many restrictions how you can configure one, which can make choosing one a bit tricky. You can't have the cheapest one or the leather-clad one with a limited slip differential, for example. And adding aftermarket parts on your own runs the risk of voiding your warranty. Long Road Racing, however, has a possible solution for creating the ideal, warranty-covered Miata. You may not be familiar with Long Road Racing, but you probably heard about one of its most-publicized products, the MX-5 Cup car. The car was developed by Mazda with the intention of creating a global spec series, and Mazda reports that about 140 of the cars have been sold so far. Every single one of those cars went to Long Road Racing to be specced out for racing before reaching their customers. So the company is familiar with the car, and has applied its expertise to its "Ultimate MX-5" program. The way the program works is, once you've purchased a 2016 or 2017 Miata, you can send it to the company to have it customized to your needs. The company has an extensive list of parts to choose from, all of which have been selected by the company to work well together. But if you need something outside of its offerings, or just need help choosing from the list, you can get in touch with the company to discuss how best to achieve your goals. Long Road Racing will also customize any trim level of Miata, and can even create a Miata Mazda didn't offer. For instance, you could have a Grand Touring with the leather interior, but also with the limited-slip differential and Brembo brakes from the Club model. All of these parts are fully warrantied by Long Road Racing for the length of the OEM warranty, and they don't void the factory warranty. We had the opportunity to try out a car customized by Long Road Racing at the M1 Concourse track in Pontiac, Mich. The car was there to sample alongside some of the MX-5 Cup cars as well as several of Mazda's stock road cars to drive on course. The road-going Long car started as a Grand Touring model, and it retains its heated leather seats and automatic climate control.

10 automakers shack up in Detroit hotel to talk Takata airbags

Since Takata has decided not to take the lead concerning potential issues with its airbag inflators, the automakers have. Perhaps that's unsurprising, since it's the automakers, not Takata, that will take a beating on the dealership floor if consumers decide its models are a health hazards. The Detroit News reports that Toyota, Honda, General Motors, Ford, Chrysler, Mazda, BMW, Nissan, Mitsubishi and Subaru met in a hotel conference room near the Detroit Metropolitan Airport last week to sort out a way to understand the technical issues involved. So far, faulty airbag inflators have been ruled the cause of five deaths and 50 injuries around the world, but neither Takata nor investigators understands exactly why the inflators are malfunctioning. The National Highway Traffic Safety Administration recently asked Takata to issue a national recall, Takata declined, citing a minuscule failure rate and the fact that it's still investigating the issue. Toyota and Honda then made an industry-wide appeal for "a coordinated, comprehensive testing program" that would pinpoint the problem inflators and get them replaced, and that's what the Detroit meeting was about. Numerous issues, however, will make this a long row to hoe: simply getting the parts to replace the nearly 20 million inflators in cars recalled around the world so far - even working with other suppliers - will take a years, but more importantly, no one knows if the replacement inflators currently being installed will suffer the same issue. Answers will hopefully come quickly with Takata, the ten automakers and NHTSA all independently investigating the problem.