Definition

Noun: A valve rocker is a pivoting lever in an internal-combustion engine. Its primary function is to transfer motion from a rotating camshaft to open and close the engine's valves.

Usage

The term valve rocker is used specifically in the context of mechanical engineering and automotive technology to describe this essential engine component. - The mechanic adjusted the clearance on the valve rocker to eliminate the tapping noise. - A broken valve rocker arm can cause a cylinder to stop firing.

Advanced Usage

• Rocker Arm: This is a common synonym for valve rocker. The term emphasizes the component's rocking, seesaw-like motion.
  • The performance camshaft kit includes upgraded rocker arms.

Variants and Related Words

• Rocker Arm (n): Synonymous with valve rocker.
• Rocker (n): A common shortened, informal form used in automotive contexts (e.g., "check the rockers").
• Valve Train (n): The collective term for all components involved in operating the valves, including valve rockers, pushrods, camshaft, and valves themselves.

Synonyms

• Rocker arm
• Valve lever

Related Components (Not Synonyms)

• Pushrod: A rod that often connects the camshaft lifter to the valve rocker.
• Camshaft: The shaft with lobes (cams) that initiates the movement transferred by the valve rocker.
• Valve Spring: The component that closes the valve after the valve rocker moves away.

Noun

1. a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine