valvetrain
Sign in to saveAlso known as valve train, poppet valve
right|thumb|Cutaway of a dual overhead camshaft engine thumb |1969 AMC V8 engine|AMC V8 overhead valve engine. The rocker cover has been removed, so elements of the pushrods, rocker arms, valve springs, and valves are visible.
Wikidata facts
- Subclass of
- mechanism
- Part of
- internal combustion engine
Show 1 more fact
- topic's main category
- Category:Valvetrain
via Wikidata · CC0
~3 min read
Encyclopedic overview
9 sectionsContents
- Layout
- Components
- Camshaft
- Pushrod
- Rocker arm / Finger / Bucket tappet
- Valves
- Valve guide
- See also
- References
right|thumb|Cutaway of a dual overhead camshaft engine thumb |1969 AMC V8 engine|AMC V8 overhead valve engine. The rocker cover has been removed, so elements of 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. 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 combustion chamber once combustion is completed.
Excerpted from Wikipedia’s “valvetrain” article, available under the CC BY-SA 4.0 licence.