tappet

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tappet

a mechanical part that reciprocates to receive or transmit intermittent motion, esp the part of an internal-combustion engine that transmits motion from the camshaft to the push rods or valves

tappet

[′tap·ət]
(mechanical engineering)
A lever or oscillating member moved by a cam and intended to tap or touch another part, such as a push rod or valve system.
References in periodicals archive ?
A IT'S no big deal, but it does sound like you have a dry tappet. The problem might go away if you flush the engine and change the oil and filter.
However, since it is Honda's first VTEC system since the 1983 original that's designed to work with bucket-type, direct-acting tappets, it's a natural for dohc auto mobile engines.
By deep drawing the tappets, Schaeffler UK will be able to manufacture a more cost effective alternative to the traditional forged and turned design.
"Because in one out of every three engines we see coming through here, there's tappet and cam spalling," Weiss answered.
The D2009 has a 500-hour oil change interval, as well as closed crankcase ventilation and hydraulic tappets.
A legion of problems include poor hot, cold and damp starting, oil leaks, tapping tappets, shagged GTis, recalcitrant gearboxes, clattering camshafts and blowing head gaskets.
A It could be a problem with the valve tappets, but it could be something more serious.
Engine tappets start to rattle around the 80,000 mile mark so unless the rattle on a cold engine vanishes quickly as the engine warms up it's going to cost money.
The group undertook the task of trying to reduce the waste of cutting fluid used in the machining of engine components, namely cam followers or tappets. The group were successful in achieving recognition for their work in winning the Institute of Engineers Education Trust Award for The Best Working Model or Prototype at the annual EESW Welsh national Convention of Excellence presentations held at the Celtic Manor Resort on April 11.
Construction is compromised mainly of a high-strength silicon-aluminum alloy, complete with four valves per cylinder, variable valve timing, bucket tappets used in place of traditional rocker arms and a variable intake manifold.