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A '''Two stroke''' engine differs from the [[four stroke]] engine by completing the four strokes of intake, compression, combustion, exhaust in only two strokes of the piston rather than four. This is done by using the beginning of the compression stroke and the end of the combustion stroke to perform the intake and exhaust functions. This allows a power stroke for every revolution of the crank, instead of every second revolution as in a four stroke engine. | |||
A '''Two stroke''' engine differs from the [[four stroke]] engine by completing the four strokes of intake, compression, combustion, exhaust in only two strokes of the | |||
Two stroke engines provide high specific power for lightweight [[motorcycle]]s as well as chainsaws. An example of a large application is locomotive engines of the 1800-1900s | Two stroke engines provide high specific power for lightweight [[motorcycle]]s as well as chainsaws. An example of a large application is locomotive engines of the 1800-1900s. | ||
Dugald Clark is attributed with inventing the two stroke cycle around 1880. His engines had a separate charging cylinder. Joseph Day is credited with the "crank case" scavenged engine using the area below the piston as a charging pump. Frederick Cock is credited for the piston controlled inlet port engine. | Dugald Clark is attributed with inventing the two stroke cycle around 1880. His engines had a separate charging cylinder. Joseph Day is credited with the "crank case" scavenged engine using the area below the piston as a charging pump. Frederick Cock is credited for the piston controlled inlet port engine. | ||
Also see: [[Rotary Disc Valve]] and [[Reed Inlet Valve]] | |||
[[Category:Definitions]] | [[Category:Definitions]] | ||
[[Category:Engine types]] | [[Category:Engine types]] |