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

“That would address the unique risk of the cylinder head cracking.”

From Seattle Times • Apr. 5, 2017

A few other companies use these “opposed-piston engines” as well, and the absence of the cylinder head and the elimination of many other parts makes them lighter and cheaper than conventional engines.

From New York Times • Jun. 20, 2012

Instead of having but one valve in the cylinder head, as the latest type “monosoupape” Gnome has, the Le Rhone has two valves, one for intake and one for exhaust in each cylinder.

From Aviation Engines Design?Construction?Operation and Repair by Pag?, Victor Wilfred