valve spring

British  

noun

1. a helical spring used to hold closed a valve in the cylinder head of an internal-combustion engine

2. any spring that closes a valve after it has been opened mechanically or by flow pressure

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Example Sentences

The problem emerged because one of Toyota's two suppliers of the engine valve spring did not properly maintain the equipment used to make the part.

From Reuters

Sunday, Stewart and Gordon had valve spring issues, forcing them to the garage during the first half of the race.

From Seattle Times

A large valve would weigh more than two smaller valves having an area slightly larger in the aggregate; it would require a stiffer valve spring on account of its greater weight.

From Project Gutenberg

Many forms of valve spring lifters have been designed to permit ready removal of the valves.

From Project Gutenberg

The valve springs may then be easily pushed down with a simple forked lever and the valve stem key removed to release the valve spring collar.

From Project Gutenberg