Question

Difference between 2 stroke & 4 stroke marine diesel engine.ppt

Answer 1

There are more than enough articles online about this topic. The simple answer is that 2-stroke piston engine has an intake and an exhaust stroke. All air, fuel, and combustion products must be moved in those 2 strokes. A 4-stroke engine has a separate stroke for moving burned (or burning) and unburned mixtures - intake, compression, expansion, and exhaust. Using 4-stroke results in cleaner emissions at the expense of specific power (power of the engine at a given size.)