The Hercules W2000 was the world's first production rotary motorcycle, beating Suzuki's RE5 to market in 1974 with a 294-cc ...

A new Mazda patent describes an EGR system built for the rotary engine, tackling the emissions weakness that ended the RX-8's production run.

A patent reveals that Mazda isn't done with its rotary engine technology, but without a public announcement, everything is ...

The rotary engine has been a Mazda staple since 1967. It powered one of the most famous and eccentric Japanese sports car line-ups, the RX-series, until 2012 when Mazda discontinued pure ...

Every time Mazda files a patent with the word "rotary" anywhere near it, the same ritual plays out. Enthusiast outlets dust ...

Antonio is a chemical engineering student pursuing his master's degree in chemical engineering and sustainable processes. Throughout his academic journey, he has gained substantial knowledge in areas ...

Mazda 13B rotary engine in a white Mazda RX-7 engine bay. - TTTNIS/Wikimedia Commons When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, ...

Chris Bruce has worked in the automotive industry since 2011 and has written thousands of stories about cars, motorsports, and motorcycles in that time. He has written for Autoblog, Autoviva, CarFax, ...

Rotary engines are already known for their high RPM; the smaller they get, the higher they tend to rev. So what happens when the world’s smallest rotary engine gets put to the test? Well, 30,000 RPM ...

The automaker's newest innovation could correct the excessive emissions that helped scupper the unique drivetrain ...

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Rotary engines come in all sorts of shapes and sizes. They can be as large as this six-rotor unit powering a Mazda RX-4 drag car in New Zealand, or as small as this 2.4-cc single-rotor engine above.