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An overhead valve engine, abbreviated (OHV) and sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with flathead (or "sidevalve") engines , where the valves were located below the combustion chamber in the engine block .
Cutaway of a dual overhead camshaft engine 1969 AMC V8 overhead valve engine. The rocker cover has been removed, so the pushrods, rocker arms, valve springs, and valves are visible. A valvetrain is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. [1]
The core items that made each brand unique were the engines. Buick and Chevrolet used overhead valves while Cadillac, Oldsmobile, Oakland used side valve or flathead engines and the divisions no longer outsourced their engines and manufactured them according to particular brand requirements.
The Y-block engine is a family of small block overhead valve V8 automobile engines produced by Ford Motor Company.The engine is well known and named for its deep skirting, which causes the engine block to resemble a Y.
The Chevrolet Inline-4 engine was one of Chevrolet's first automobile engines, designed by Arthur Mason and introduced in 1913. Chevrolet founder Billy Durant, who previously had owned Buick which had pioneered the overhead valve engine, used the same basic engine design for Chevrolet: exposed pushrods and rocker arms which actuated valves in the detachable crossflow cylinder head.
Overhead cam multivalve overhead valve straight-8 engine The Duesenberg straight-8 engine was produced from 1921 to 1937 and sold in Duesenberg automobiles. Fred and August Duesenberg got their start building experimental racing engines which achieved a great deal of success.
2004–2011;The 2.5 Duratec is an inline 5 engine used in the Ford Focus ST225,Kuga,S-Max ST and various Volvo T5 models.It features DOHC, 20 valves and Ti-VCT.It displaces 2521cc and produces 166 kW (225hp) and 320 N.m (236lb.ft) in the ST or 227 kW (305hp) and 440 N.m (324.5lb.ft) in the Focus RS, or even up to 257kW (345hp) and 460 N.m ...
The most common use of a rocker arm is to transfer the motion of a pushrod in an overhead valve (OHV) internal combustion engine to the corresponding intake/exhaust valve. In an OHV engine the camshaft at the bottom of the engine pushes the pushrod upwards. The top of the pushrod presses upwards on one side of the rocker arm located at the top ...