a. Intake stroke:- The vapourised mixture of petrol and air is let in through the inlet value. The outlet value remains closed. Piston moves away from the spark plug.
B. Compression stroke:- Both the values are closed and the mixture of air and petrol is compressed by the piston moving towards the spark plug. Though the compression increases the temperature of the mixture it is not sufficient to ignite the petrol.
c. Power stroke:- The ignition stage and the expansion stage are together called power stroke.
d. Exhaust stroke: Here outlet value opens Piston moves back. The products of combustion gases are pushed out of the cylinder through the exhaust value.
B. Compression stroke:- Both the values are closed and the mixture of air and petrol is compressed by the piston moving towards the spark plug. Though the compression increases the temperature of the mixture it is not sufficient to ignite the petrol.
c. Power stroke:- The ignition stage and the expansion stage are together called power stroke.
d. Exhaust stroke: Here outlet value opens Piston moves back. The products of combustion gases are pushed out of the cylinder through the exhaust value.
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