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In a 2-stroke engine, all five functions of the cycle are completed in only two strokes of the piston (or one revolution of the crankshaft). In a 4-stroke engine, the five functions require four strokes of the piston (or two revolutions of the crankshaft).


Is a two stroke or four stroke better?
The two stroke diesel engine is widely used as the the four stroke as it has more output power. however, the two stroke engine has high losses whether heat lose or unburnt gases. So, in comparison with four stroke which engine has the best performance

What is the difference between 2 stroke and 4 stroke outboards?
A 2-stroke engine relies on both the cylinder and crankcase to make this happen. ... For its part, a 4-stroke engine requires four strokes of the piston to complete a power cycle. The four strokes are intake, compression, power and exhaust