rocker arm

English

Noun

rocker arm (plural rocker arms)

  1. (mechanical engineering) A valvetrain component that typically transfers the motion of a pushrod in an overhead valve internal combustion engine to the corresponding intake or exhaust valve.
    • 1958 September, “Swindon's First Main-Line Diesel Locomotive”, in Railway Magazine, page 601:
      All the rocker arms have an automatic hydraulic adjustment, which ensures at all times that no backlash is present in the valve motion.

References

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