Definitions for overhead valve
over·head valve

WiktionaryRate this definition:0.0 / 0 votes

1. overhead valvenoun

   A type of internal combustion engine design which has the inlet and exhaust valves in the cylinder head (and therefore above the piston). The camshaft can be beside the pistons (with pushrods and rockers operating the valves) or above the valves, with the latter usually referred to as overhead cam.

WikipediaRate this definition:0.0 / 0 votes

1. overhead valve

   An overhead valve (OHV) engine, sometimes called a pushrod engine, is a piston engine whose valves are located in the cylinder head above the combustion chamber. This contrasts with earlier flathead engines, where the valves were located below the combustion chamber in the engine block. Although an overhead camshaft (OHC) engine also has overhead valves, the common usage of the term "overhead valve engine" is limited to engines where the camshaft is located in the engine block. In these traditional OHV engines, the motion of the camshaft is transferred using pushrods (hence the term "pushrod engine") and rocker arms to operate the valves at the top of the engine. Some early intake-over-exhaust engines used a hybrid design combining elements of both side-valves and overhead valves.

WikidataRate this definition:5.0 / 1 vote

1. Overhead valve

   An overhead engine, also informally called pushrod engine or I-head engine, is a type of piston engine that places the camshaft within the cylinder block, and uses pushrods or rods to actuate rocker arms above the cylinder head to actuate the valves. Lifters or tappets are located in the engine block between the camshaft and pushrods. The more modern overhead camshaft design avoids the use of pushrods by putting the camshaft in the cylinder head. In 1949, Oldsmobile introduced the Rocket V8. It was the first high-compression I-head design, and is the archetype for most modern pushrod engines. General Motors is the world's largest pushrod engine producer, producing both V6 and V8 pushrod engines. Few pushrod type engines remain in production outside of the United States market. This is in part a result of some countries passing laws to tax engines based on displacement, because displacement is somewhat related to the emissions and fuel efficiency of an automobile. This has given OHC engines a regulatory advantage in those countries, which resulted in few manufacturers wanting to design both OHV and OHC engines.

How to pronounce overhead valve?

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How to say overhead valve in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of overhead valve in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of overhead valve in Pythagorean Numerology is: 5

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Overhead_Valve
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Overhead_Valve
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=overhead valve