What is stroke? Stroke is a maximum distance covered by piston in a length between TDC and BDC. mkidaa.blogspot.com
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Four stroke petrol engine It contains a cylinder, piston inlet valve, exaust valve, spark plug etc. It contains 4 processes which are as follows:- 1. Suction stroke 2.compression stroke 3. Expansion stroke 4. Exhaust stroke complete diagram of four stroke petrol engine 1. Suction stroke:- when piston moves TDC to BDC inlet valve open and exaust valve remain closed air fuel mixture enters in cylinder and piston approach at BDC and suction stroke is complete . 2 compression stroke :- Now piston is at BDC . Piston moves BDC to TDC and inlet and exaust valve remain closed. When piston move towards TDC mixture of fuel and air compressed and compression stroke completed. 3. Expansion stroke:- Now piston is at TDC and spark plug spark in mixture of air and fuel and combustion of mixture takes place and creates pressure or power so piston moves towards BDC it is also known as power stroke . 4. Exhaust stroke :- when piston moves BDC to TDC exaust va...