cylinder head

American  

noun

1. (in a reciprocating engine or pump) a detachable plate or cover on the end opposite to that from which the piston rod or connecting rod projects.

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cylinder head British  

noun

1. Sometimes shortened to: head.  the detachable metal casting that fits onto the top of a cylinder block. In an engine it contains part of the combustion chamber and in an overhead-valve four-stroke engine it houses the valves and their operating mechanisms

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Etymology

Origin of cylinder head

First recorded in 1880–85

Example Sentences

"Following a study about the economics of cylinder head suppliers, Renault Group has found another supplier that will start working with us from 2024," a Renault spokesman said.

From Reuters • Aug. 23, 2022

On Nov. 6, a man was injured when he lost his balance and fell on a cylinder head in the engine room.

From Washington Post • Apr. 30, 2021

Ford said engines can overheat if coolant gets low, causing the cylinder head to crack and spew oil that can catch fire.

From Seattle Times • Apr. 5, 2017

Conventional engines combust fuel in the cylinder head.

From New York Times • Jun. 20, 2012

Priming is wasteful because it rapidly empties the boiler of its water, and dangerous because it may cause the piston to knock out the cylinder head or cover.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua