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
Word origin
C18: from tap1 + -et
tappet in American English
(ˈtæpɪt)
noun
a sliding rod in an engine or machine moved by intermittent contact with a cam and used to move another part, as a valve
Word origin
tap1 + -et
tappet in Automotive Engineering
(tæpɪt)
Word forms: (regular plural) tappets
noun
(Automotive engineering: Vehicle components, Engine, transmission, and exhaust)
A tappet is the part of an engine gear train that converts cam lift into linear reciprocating (= up and down) movement which it transmits to the valve.
Problems with hydraulic tappets can be caused by dirty oil blocking the fine filters.
The tappet is the mechanism which lifts the valve, which is adjustable in most modern cars.
The cam lifts the tappet and the valve, which compresses the valve spring, and the valve opens.
tappet in Mechanical Engineering
(tæpɪt)
Word forms: (regular plural) tappets
noun
(Mechanical engineering: Machinery and components)
A tappet is a part that transfers motion from one machine part to another, especially the part of an internal-combustion engine that transmits motion from the camshaftto the push rods or valves.
The cam pushes on the tappet, which is a part of the rod and thus the rod is pushed upward.
Without a tappet, the sideways force created by the rotating cam would cause the valve stem to bend.
A tappet is a part that transfers motion from one machine part to another, especially thepart of an internal-combustion engine that transmits motion from the camshaft to thepush rods or valves.