Difference between 2 Stroke Engine and 4 Stroke Engine

2 STROKE ENGINE	4 STROKE ENGINE
The cycle is completed in 2 strokes of the piston	The cycle is completed in 4 strokes of the piston
It has one power stroke in 1 cycle of crankshaft	It has one power stroke in 2 cycle of crankshaft
It has ports	It has valves
Smaller flywheel	Bigger flywheel
Greater cooling and lubrication required	Less requirement of cooling and lubrication required
Parts are cheap in cost and for same power  light weight engine is requires	Parts are cheap in cost and for the same power  heavy  weight engine is required
Uniform torque distribution	Non-uniform torque distribution
Less volumetric and thermal efficiency	More volumetric and thermal efficiency
Simple in design	Complex in design
Less in demand	More in demand
Used in lawn movers, scooters, motorcycles, mopeds, etc.	Used in high efficiency motor cycles, cars ,buses, trucks, aeroplanes, power generation, etc.