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In a two-stroke engine, there is typically one piston that completes a power cycle with every revolution of the crankshaft. In contrast, a four-stroke engine uses one piston to complete a power cycle over two revolutions of the crankshaft, meaning there is one piston per cylinder, but it takes two revolutions to produce one power stroke. Thus, both types of engines can have multiple pistons depending on the number of cylinders, but the operation per cycle differs significantly.

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2w ago

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