Which type of engine tends to use a simple ring design to reduce complexity?

Two-cycle engines are known for their simpler design, which often includes using a simple ring setup around the piston. These engines operate on a two-stroke cycle, meaning they complete a power cycle with just two movements of the piston (one revolution of the crankshaft). This design inherently reduces the number of moving parts compared to four-cycle engines, which require more complex mechanisms for intake, compression, power, and exhaust strokes.

The simplicity of the two-cycle engine makes it easier to manufacture and maintain, and it also contributes to a lighter overall engine weight, which is beneficial in applications like chainsaws, small motorcycles, and lawn equipment where weight and compactness are crucial. This straightforward design helps to streamline production processes and decrease costs.

In comparison, high-performance engines typically have more complex designs to generate greater power and efficiency, while four-cycle engines utilize a more intricate arrangement of components to manage their four distinct stroke cycles. Rotary engines, despite their unique design, still incorporate multiple moving parts to achieve their operation. Thus, the two-cycle engine stands out for its effective use of a simple ring design to enhance efficiency and reduce mechanical complexity.