What makes the Achates Power’s opposed-piston engine unique is that it does not use a cylinder head like conventional engines. Instead, the engine uses multiple pistons to create compression and ...

Is It Really a "1-Stroke?" This is basically a four-cylinder, opposed-piston engine, similar in basic concept to the EcoMotors OPOC and Achates Power opposed-piston engines.

Japanese automotive company Subaru has used the boxer design almost exclusively and is now pioneering a new phase for horizontally opposed piston engines with the release of the world’s first ...

This new-generation Horizontally-Opposed 4 cylinder gasoline engine, the third generation Subaru boxer engine, showcases Subaru’s latest engineering research and development.

The Lycoming O-320 engine, a four-cylinder, horizontally opposed, air-cooled engine, is so reliable that they are still in use today despite being 70 years old.

Is It Really a "1-Stroke?" This is basically a four-cylinder, opposed-piston engine, similar in basic concept to the EcoMotors OPOC and Achates Power opposed-piston engines.

An engine similar to this type powered Santos-Dumont's Demoiselle aircraft. Matthew B. Sellers, builder of the first Kentucky-manufactured aircraft, flew his first quadraplane from 1908 to 1913 ...

The Porsche 718 Boxster, 718 Cayman and 718 Spyder have four-cylinder boxers (flat-fours). All current Subaru engines are the horizontally opposed type with four cylinders.

Each cylinder, horizontally opposed as in a boxer engine, contains two pistons facing each other. As a two-stroke design it's both lightweight and compact, with no need for cylinder heads or ...

A new opposed-piston diesel engine design yields more power and better efficiency from a smaller displacement, and is coming soon to a tank near you.

The cylinders were arranged in two blocks of horizontally opposed configurations. So you have two 12-cylinder engines facing each other and sharing a common crankshaft.