how to work four-stroke engine?
A four-stroke (also four-cycle ) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: (Four-stroke cycle used in gasoline/petrol engines:1. intake ,2. compression,3. power , and 4.exhaust .) Intake : Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. Compression : This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C...
