Spark Ignition Engine is a part of Internal Combustion Engine which is used for Automobile car that burn fuel inside the engine cylinder due to combustion process. Energy is developed during the combustion of fuel. Chemical Energy of fuel is converted to the Heat Energy inside the combustion chamber by combustion process with the spark plug and finally Heat Energy is converted to the Mechanical Energy by some parts of engine, like – Cylinder, Piston, Connecting rod, Crankshaft. The Heat Energy is converted to the Mechanical Energy by the expansion of gases (Air & fuel mixture) against the piston attached to the crankshaft that can rotate. This Rotational force transfer to the drive wheels of a car by some mechanical device, like – Clutch, Gear box, Propeller shaft, Differential, Axle etc. and finally the wheels keeps running and car keeps moving.