2 stroke and 4 stroke engine difference and working principle

Question

Accepted Answer

2 stroke engines have a power stroke in every revolution while 4 stroke engines have a power stroke in every other revolution.

2 stroke engines have a simpler design and are lighter than 4 stroke engines.
4 stroke engines are more fuel-efficient and produce less pollution than 2 stroke engines.
2 stroke engines require a mixture of oil and fuel while 4 stroke engines have separate oil and fuel systems.
In a 2 stroke engine, the combustion process occurs in the crankcase while in a 4 stroke engine, it occurs in the cylinder head.
Examples of 2 stroke engines include chainsaws, dirt bikes, and boats while examples of 4 stroke engines include cars, trucks, and motorcycles.

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