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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.

The Mazda MX-5 Miata and saving a marriage

I've had the privilege of knowing Zach Bowman – former Autoblog scribe, now penning great things over at Road & Track – for nearly a decade. We met at the Detroit Auto Show when we were both relatively new to the business, and joked about how someday, we'd work together and eventually conquer the world as big shots in the industry (we're still figuring that last part out, by the way). Thus, I was thrilled when Zach joined Autoblog in 2010, just a couple of months after I was hired, and was equally saddened when I learned he'd be leaving us. Zach is someone I'm proud to call a colleague – nay, a friend – and I've enjoyed the voice he's brought to this line of work. I tell you this on a personal level because Zach has just published what you could arguably consider his most heartfelt piece of automotive work to date. It's a charming, emotional story about his relationship with his wife, and how they, like so many young couples, learned to make marriage work through the many ups and downs found in any solid relationship. I call this "automotive work" because Zach intertwines this tale into a story about driving his 2006 Mazda MX-5 Miata across the country, his wife by his side, learning about love and life from the cockpit of a two-seat roadster. I can honestly say it's one of the best things I've read in a long while. Rather than continue to wax poetic about Zach's latest piece, I'll let his own words speak for themselves. Head over to Road & Track to read the full piece.

The spirit of these 7 weird Mazdas lives on in today's cars

HIROSHIMA, Japan — When visiting the Mazda Museum in Hiroshima, housed amidst the company's main manufacturing site on the shore of the Enko River, you can follow Jujiro Matsuda's early 20th century entrepreneurial path from artificial cork manufacturer to machine and machine toolmaker, to motor vehicle producer. But probe a bit deeper into the exhibits, and you can uncover more than just a chronicle of corporate achievements: delightfully weird outliers, paragons of oddball design, engineering and marketing solutions It's looking at these delightful misfits that really illustrates Mazda's tale. You can also see precisely how many of these vintage conveyances led directly (or indirectly, or obtusely) to Mazda's most iconic American-market cars and trucks. Our seven favorite precursors, and their lovable successors, are listed below. 1931 Type TCS/Mazda B-Series Mazda's first vehicle was this little three-wheeler, powered by an air-cooled, one-cylinder motor. Because the company lacked a distribution network at the time, the trucklet was marketed by Mitsubishi; hence the three-diamond pattern on its side. All of this is very reminiscent of the company's eventual foray into the U.S. market, where its sales were spearheaded by compact pickups. The B-Series, which was one of the first Mazda vehicles available in the U.S., arrived in 1972, and stuck around through the first decade of the 21st century. Like its partnership with Mitsubishi, Mazda teamed up with stakeholder Ford to market this little truck as Ford's first small pickup, the Courier, the precursor to the Ranger. There was even a rotary-powered B-Series for a few years, but we're getting ahead of ourselves. 1968 Bongo Van/Mazda5 The Bongo allegedly was the first one-box van design in Japan, and apparently it was so popular that the name Bongo became, for a period of time, the generic metonym for the category—the way that Kleenex is a stand-in for all facial tissue. With a tiny rear-mounted engine and a planar expanse of metal to push around, it was not particularly fast, but it was both spacious and innovative. The same could be said of the brand's mini-minivan, the Mazda5, which was available for a couple of generations in the States in the Aughties. Sadly, the name 5 never caught on as a synonym for fun-to-drive family hauler, at least not yet, and the category itself (like nearly every other car category) was crushed in America by the rise of the crossover.