how many times is a minuts does each valve in a four stroke cycle engine running of 2000rpm open and closed
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Four stroke engine completes its cycle after 720 ° rotation of crankshaft (2 rotation)1st stroke — SUCTION— 90° rotation of crankshaft (intake valves opens and get closed at end of the stroke)2nd stroke — COMPRESSION — , 90° rotationof crankshaft (all valves remains closed)3rd stroke — POWER — 90° rotation of crankshaft ( all valve remains closed)4th stroke — EXHAUST — 90° rotation of crankshaft (exhaust valve opens and get closed at the end of the stroke)so each valves opens and get closed 1 time in every 2 rotation.So if engine is running on 2000 rpm then,2000 ÷ 2 =1000 timesopening and closing of each valve happens in one minute is the answer...
i hope u understand
Four stroke engine completes its cycle after 720 ° rotation of crankshaft (2 rotation)1st stroke — SUCTION— 90° rotation of crankshaft (intake valves opens and get closed at end of the stroke)2nd stroke — COMPRESSION — , 90° rotationof crankshaft (all valves remains closed)3rd stroke — POWER — 90° rotation of crankshaft ( all valve remains closed)4th stroke — EXHAUST — 90° rotation of crankshaft (exhaust valve opens and get closed at the end of the stroke)so each valves opens and get closed 1 time in every 2 rotation.So if engine is running on 2000 rpm then,2000 ÷ 2 =1000 timesopening and closing of each valve happens in one minute is the answer...
i hope u understand
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