Here's how the radical new engine concept is designed to work. This is basically a four-cylinder, opposed-piston engine, similar in basic concept to the EcoMotors OPOC and Achates Power opposed ...

There’s a reason inline four-cylinder engines are rarely bigger than 2.5 ... few cylinders - with some four-pot diesels being over 4.0 liters in size.

The 4-cylinder engine has become a standard across the ... A flat engine, often referred to as a "boxer" because of its horizontally opposed pistons resembling two boxers going at it, has another ...

A 4-cylinder car is a car powered by an engine with four pistons, arranged almost exclusively in an inline configuration as opposed to other common engine layouts. These days, 4-cylinder cars make ...

Inline-4 engines are frequently fitted with counter ... 4s which only require a single cylinder head, horizontally opposed four-cylinder engines require two separate cylinder heads, which adds ...

the four-cylinder engine known as Thor has a power output befitting its name. The latest version of the turbocharged 4.0-liter engine is capable of delivering 2,000 hp in racing trim. If drag ...

Photo: Honda Motor Co., Ltd. Often ridiculed by many gearheads, four-cylinder engines can be as potent as those with twice as many cylinders. Four-cylinders were among the first types of internal ...