internal-combustion engine images

internal-combustion engine

cycles of a four-stroke gasoline-fueled engine:

A. intake stroke: the piston moves down, drawing air and fuel into the cylinder;

B. compression stroke: the piston moves up, compressing and heating the air and fuel mixture;

C. power stroke: the hot air and fuel mixture ignites, forcing the piston down;

D. exhaust stroke: the piston moves up, forcing the exhaust gases out of the cylinder