Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1982-06-21
1984-09-11
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123195HC, F01L 124
Patent
active
044703821
ABSTRACT:
A valve lash adjuster for a horizontally opposed engine in which valves are horizontally disposed and the adjuster for each valve is also horizontally disposed. The adjuster has a cylindrical body and a hollow plunger. The tip end of the plunger engages with a rocker arm of a valve lifting device of the engine. The plunger has a ball check valve for trapping oil in a pressure chamber defined behind the plunger and is outwardly biased by a spring for taking up clearance in the valve train. Passages are provided for supplying the lubricating oil into an annular groove provided around the cylindrical body. The passages are located at such positions that the oil remains in the groove. The inside chamber of the plunger is communicated with the annular groove through a hole located to communicate with the annular groove at the oil remaining zone, so that the oil is maintained in the inside chamber of the plunger and the pressure chamber.
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patent: 1827938 (1931-10-01), Ericson
patent: 2393793 (1946-01-01), Meth
patent: 2539877 (1951-01-01), Voorhies
patent: 2938508 (1960-05-01), Papenguth
patent: 2962012 (1960-11-01), Howson
patent: 3070080 (1962-12-01), Slooten
patent: 4285310 (1981-08-01), Takizawa et al.
Bailey R. S.
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Lazarus Ira S.
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