Posted in Automobile Technology

Constructional Detail and Main Components of Spark Ignition Engine

Working Principle of an Engine When a suitable fuel in gas or vapour form is mixed with air in a proportion, a combustible mixture and is formed and is then ignited in a confined space. The heat generated by combustion will cause the gases to expand. If the combustion takes place in a straight cylinder containing a well-fitted piston then the piston is forced down the cylinder. By connecting the piston to a crankshaft, the up and down (reciprocating) motion of the piston is changed into rotary motion. To enable the engine to operate continuously, provision must be made to…