Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1986-10-15
1989-02-28
Wolfe, Jr., Willis R.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9044, 123 9043, F01L 124
Patent
active
048075760
ABSTRACT:
A valve operating mechanism for operating a valve in an internal combustion engine includes a hydraulic lash adjuster for imposing a hydraulic pressure against a cam follower slidably engaging a camshaft. The hydraulic lash adjuster includes a plunger slidably disposed in a cylinder and defining an oil chamber communicating with a pressure chamber between the plunger and the cylinder through a valve hole which can selectively be opened and closed by a free-ball check valve. The plunger is normally urged by a spring to move in a direction out of the cylinder toward the cam follower. The cam follower acts on an end of the valve stem of the valve through an interlink mechanism having an adjusting device for adjusting the volume of the pressure chamber of the hydraulic lash adjuster.
REFERENCES:
patent: 3273548 (1966-09-01), Hoffman
patent: 3690958 (1972-09-01), Thompson
patent: 4184464 (1980-01-01), Svihlik
patent: 4524731 (1985-06-01), Rhoads
patent: 4541373 (1985-09-01), Ishida
patent: 4596213 (1986-06-01), Hillebrand
patent: 4601268 (1986-07-01), Rhoads
patent: 4602597 (1986-07-01), Rhoads
patent: 4741298 (1988-05-01), Rhoadas
Matsubara Toshihiko
Otowa Takashi
Sonoda Toshinari
Yoshida Kazuo
Honda Giken Kogyo Kabushiki Kaisha
Macy M.
Wolfe, Jr. Willis R.
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