Four Strokes

Four Strokes Points : Four Strokes In a four-stroke engine, the cycle of process is completed in four-strokes of the piston or two revolutions of the crankshaft. Thus 720°CA (crank angle) is necessary to whole a cycle. The movement of the piston and the position of the valves during each stroke. The individual strokes are:
(i) Induction or suction stroke
(ii) Compression stroke
(iii) Expansion or power stroke
(iv) Exhaust stroke