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1 - Piston moves down the cylinder from (TDC) top dead center to bottom dead center (BDC).Intake valve is open and the exhaust valve is shut.Downward motion of the piston creates a vacuum, which draws the air/fuel mixture into the engine through the open intake valve. 2 - Piston moves up the cylinder bore from BDC to TDC.Intake and exhaust valves are both closed.Upward motion of the piston compresses the air/fuel mixture in the combustion chamber. 3 - Spark plug fires and ignites the compressed air/fuel mixture just before the end of the compression stroke. This combustion forces the piston down the cylinder bore and rotates the crankshaft, propelling the vehicle forward.Piston moves down the cylinder bore from TDC to BDC.Intake and exhaust valves are both closed. 4 - Piston moves up the cylinder bore from BDC to TDC. The momentum created by the power stroke keeps the crankshaft moving and the other three strokes going in sequence.Intake valve is closed and the exhaust valve is open.Final stroke pushes the spent gases and exhausts out of the cylinder. The cycle is now complete and the piston is ready to begin the intake stroke again. #engines #otto #4stroke #icengineworks #internal #combustion #engine #intake #compression #exhaust #piston #valve #firingorder #4cyl #ignition #mechanic #4t #mechanical #spark #crankshaft #mechanicalengineering #automobile #foryou
Duration: 23 sPosted : Thu, 03 Aug 2023 10:26:03Views
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