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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 .
SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).
Gasoline engines up to WWII were often valve in block design (L-head), during the war more overhead valve (ohv) engines were used, and after the war all new engines (except 1 F-head and 1 Overhead camshaft (ohc)) have been ohv. All diesel engines have ohv, they can be naturally aspired, supercharged (SC), or turbocharged (TC).
A valvetrain is a mechanical system that controls the operation of the intake and exhaust valves in an internal combustion engine. [1] The intake valves control the flow of air/fuel mixture (or air alone for direct-injected engines) into the combustion chamber, while the exhaust valves control the flow of spent exhaust gases out of the ...
The ratio is determined by the ratio of the distances from the rocker arm's pivot point to the point where it touches the valve and the point where it touches the pushrod/camshaft. A rocker ratio greater than one essentially increases the camshaft's lift. Current automotive design favors rocker arm ratios of about 1.5:1 to 1.8:1.
These include the highest ramp jump by a monster truck by Krysten Anderson in Grave Digger at a height of 10.3 metres (34 ft), [9] the most monster trucks jumped by a monster truck, by Adam Anderson in Megalodon, jumping over eight trucks, [10] the most donuts (spins) in a monster truck in one minute by Bari Musawwir in Zombie, spinning 44 ...
In 1985, USHRA held their first monster truck racing event, The Battle of the Monster Trucks, at the Louisiana Superdome. Up to this point, monster trucks had only performed freestyle exhibitions, and although for several years exhibitions would be a part of smaller arena shows, racing became used in all events by the early 1990s.
Opel OHC engine can refer to the following diesel and petrol engines produced by General Motors: GM Family 0 engine – straight-4 engines produced by Adam Opel AG; GM Family 1 engine – straight-4 engines produced by Adam Opel AG; GM Family II engine – straight-4 engines produced by Adam Opel AG