In this video, I explore a novel rotary engine design that addresses the sealing challenges of traditional rotary vane engines. My new design features two half-moons within an ellipse that allow for ...

When it comes to unique engine designs, one of the most prolific is the trusty rotary configuration. Instead of featuring a number of spherical cylinders moving up and down like in most internal ...

It's been more than a decade since Mazda finally killed off the RX-8, and ever since then, the Japanese automaker has continually teased us with the promise of a new rotary-powered sports car that ...

After years of rumors and experimentation behind closed doors, the Mazda rotary engine is officially back. The Vision X-Coupe, a plug-in hybrid concept showcased at the 2025 Japan Mobility Show, has ...

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 ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

Although production of the mass-produced Wankel engine ended when the last 2012 Mazda RX-8 rolled off the assembly line, the Japanese automaker hasn't given up development of its signature rotary ...

The rotary engine is easily one of the most controversial powertrains in the world of cars, and it's known for the brap-brap ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...

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, ...

When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...