Diagram o a cylinder as foond in 4-stroke petrol ingines.: C – crankshaft. E – exhaust camshaft. I – inlet camshaft. P – piston. R – connecting rod. S – spark plug. V – valves. reid: exhaust, blue: intake. W – cuiling watter jacket. gray structur – ingine block.
An internal combustion ingine (ICE) is a heat ingine whaur the combustion o a fuel occurs wi an oxidizer (uisually air) in a combustion chamber that is an integral pairt o the wirkin fluid flow circuit.