Mazda brought the rotary engine back in a new concept. This time, the company made a couple of environmentally-friendly ...

The power output performance of the rotary engine can be improved when the dynamic effects of intake and exhaust systems are utilized. Previous studies have shown that one-dimensional gas exchange ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

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 rotary engine hasn't found its way into new cars in over a decade. It has some fantastic pros, but its cons might be ...

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 ...

The electric motor might carry the hype banner at the moment, but some minds remain convinced that there's plenty of innovation left to be extracted from internal combustion. AIE is one of the rotary ...

Imagine triangles spinning around a shower curtain rod inside a beer keg—that is an elemental description of the screaming Wankel rotary engine. This powerplant is beloved by gearheads the world over ...

Designed and championed by self-taught engineer Felix Wankel, the rotary engine is now most closely associated with Japanese automaker Mazda. Many of the greatest Mazdas ever made, including the RX-7 ...

Developing a gasoline-powered rotary engine was a dream for Felix Wankel, and we mean that literally. Some steam engines worked on the same basic principle as far back as the 18th century, but the ...