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two stroke
this engines slow speed and big hp up 5000 hp to 20000 hp as main marine engine and power plants
2 Stroke engines are more powerful that 4 stroke engines.
Why? Because 2 stroke engine produces power on every rotation of the crankshaft compared to every 2 rotations of the crankshaft in 4 stroke engine. So theoretically, 2 stroke engine produces double the power for every cycle compared to 4 stroke, but then 2 stroke engines are less fuel efficient and produce low torque at low RPMs
