Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1986-07-01
1988-05-24
Argenbright, Tony M.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
F01L 124
Patent
active
047458895
ABSTRACT:
A self-adjusting hydraulic valve tappet arranged in a guide bore of a cyler head of an internal combustion engine and contacted at one end face by a control cam and abutting with a second end face against the end of a valve stem, the tappet consisting of a cup-shaped housing (1) comprising a hollow cylindrical wall (2) closed at one end by an end member (3) against the outside of which the cam abuts, and a cylindrical guide sleeve (6,28) concentric with the cylindrical wall (2), characterized in that the guide sleeve has at a point distant from the end member (3) an intake port (26,31,53) that opens into a duct extending to the end member (3), which is defined, on the one hand, by the outer surface of the outer piston (16) and, on the other hand, by the bore of the guide sleeve (6), and an oil transfer port (19,34) leading into the centric oil reservoir (18) is provided at the end of the inner piston (17) facing the end member (3).
REFERENCES:
patent: 4465038 (1984-08-01), Speil
Argenbright Tony M.
Motomak Motorenbau, Maschinen-und Werkzeugfabrik Konstruktionen
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