tappet

/tap-it/US // ˈtæp ɪt //UK // (ˈtæpɪt) //

挺杆,阀杆,挺身而出,挺柱

Definitions

n.名词 noun

1
Machinery.
- : a sliding rod, intermittently struck by a cam, for moving another part, as a valve.

When the exhaust valve is operated by the tappet rod and rocker arm the intake valve is also carried down with it.
As the tappet is struck 400 to 600 times per minute, the wear and stress is great.
The resistance and pressure of the tappet tends to throw increased and unequal wear on the opposite side of the cylinder.
The oscillating of the tappet-arm produces an intermittent rotary motion of the ratchet-wheel.
Each stamp has a tappet at the back, which requires to be daubed with grease on the lower side that it can be raised more easily.