overhead valve - Knowledgebase Question

walker, Mi
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Question by darkreign76
February 26, 2009
what is the advantage og having an overhead valve engie?

Answer from NGA
February 26, 2009
As the name implies, OverHead Valve engines (OHV) have the valves located above the combustion chamber, in the roof of the cylinder head.

The OverHead Valve layout permits smoother fuel mixture intake, plus quicker and more complete exhaust. This increased combustion efficiency, in turn, enables a higher compression ratio to be used. In this way it is possible to obtain a greater power output and to avoid the build-up of carbon.

The OHV-design gives also an excellent thermal balance, which contributes to reduced cylinder distortion, a decease in oil consumption and an increase in engine service life.

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