Answer:
Explanation: Petrol Engine is an internal combustion engine used to run petrol. The power state of small and medium sized petrol engines is usually measured in kw.
It is an engine operation. When both the vavles are closed the spark plug between the intake and exhaust valve will fire, igniting the air mixture.
Resulting explosion forces the piston downward and rotates the crankshaft which in turn propels the vehicle.