Pop the hood on a classic Mazda RX-7 or RX-8 and the engine bay looks oddly empty. That is the charm of the rotary engine: a compact lump of metal that trades pistons and valves for a spinning ...

Hydrogen is a relatively new player in the alternative fuel market, offering an alternative to electric cars and hybrids with its own take on green emissions. However, hydrogen-powered technology ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

The first three articles in this series on the basic operation of the internal combustion engine dealt with the theory of such a mechanical device, the identification and the function of the primary ...

How Does an Engine Work? Before digging into this significant expense, it’s important to outline how an engine works. The engine is the heart of the car, truck, or SUV. The vehicle’s full function is ...