What is the purpose of a camshaft?
What is the purpose of a camshaft? A camshaft on an internal combustion heat engine is a device that controls both the input of fuel and the expulsion of exhaust fumes. It consists of several radial cams, each displacing intake or exhaust valves. This camshaft is connected to the crankshaft via belt, chain or gears. Why are there two camshafts in an overhead cam engine? This arrangement was used to provide four valves per cylinder while minimising the valvetrain mass and minimising the overall engine size. A double overhead cam, dual overhead cam, or twin-cam engine has two camshafts per...