(OHV) Valves located in the head. A four-stroke engine with the intake and exhaust poppet valves located in the cylinder head and not at the side of the cylinder as in a side-valve engine. The valve stems are either at an angle or parallel and the valve discs face the piston, valve actuation pushrod and swing arm.
Typically used to describe an engine where the valves are positioned higher than the camshaft, such as in a small-block chevrolet V8 engine.
The head contains the valves, spark plugs, rocker arms and push rods.
An engine configuration in which all of the valves are located in the cylinder head and the camshaft is located in the cylinder block. The camshaft operates the valves via lifters and pushrods.
An acronym for overhead valve. This simply means that the intake and exhaust valves are above the cylinder head. OHC means overhead cam. The cam is above the cylinder head. SOHC engines have a single cam over the cylinder head. DOHC engines have two cams above the cylinder head. All OHC, SOHC, and DOHC engines are also OHV.
An I-head arrangement where the valves are located over the piston in the cylinder head.
In automotive engineering, an overhead valve internal combustion engine is one in which the intake and exhaust valves and ports are contained in the cylinder head.
