How Camshaft Variable Valve Timing Works?
Camshaft Variable Valve Timing Working Of Camshaft Timing Camshaft A Camshaft is commonly used to operate poppet valves in an internal combustion engine. A camshaft is situated in the cylinder block or cylinder head which has oblong lobes or cams which causes a tappet or lifter to open and close the intake and exhaust valves. This force is applied on the valve directly or through an intermediate mechanism such as a rocker arm, lifter, follower or tappet. Push rods are used to connect the camshaft to the rocker arm via the lifter. Each valve utilizes a spring which returns the valve to their original position (closed.) Camshafts are designed according to the RPM and horsepower range desired. When the intake valve is opened, the piston travels downward pulling in an air-fuel charge into the cylinder. This intake charge is a mixture of air and fuel which is ready for combustion. The faster the engine is running the faster the air and fuel mixture moves into the cylinders. Th...