Engines have remained fairly true to form over the years without a lot of unusual changes, but a new Ferrari design could ...

In a conventional application, there are three rings per piston. The top ring is called the compression ring. Its purpose is to seal the combustion gas pressure, transfer heat from the piston to the ...

In the 1950s, Commer created a special engine known as the TS3. Its unique design allowed it to stand out, and many still ...

Not pretty, but we’ve done worse ourselves. By 12 minutes in, we were worried it wasn’t going to work again, but it did work although it wasn’t terribly reliable to start. Still, when it worked, it ...

Free-piston engine generators and linear machines represent an innovative departure from conventional rotary systems, offering high thermal efficiency and operational flexibility by eliminating the ...

When we here in the modern age think of an “engine,” we are usually thinking of a four-stroke, four-cylinder, gasoline-fed, internal-combustion engine with the valves on the top. But why must that be ...

A government-backed research institute is funding work to develop a hybrid-electric powertrain based on a new version of the Wankel piston engine that is now being used to power Mazda's new RX-8 car.

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 ...