Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1985-02-21
1986-04-01
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9051, F01L 124
Patent
active
045790949
ABSTRACT:
A cup-shaped casing of a self-adjusting hydraulic tappet for overhead camft internal combustion engines, the casing comprising a hollow cylindrical outer part (1) closed at one end by an end member (3) and disposed concentrically therein a hollow cylindrical inner element (4) sealingly connected at its end distal from end member (3) to the bore of the outer part (1) by an annular flange (5), the actual clearance-compensating element (9) being guided in inner element (4) and having around it an annular oil reservoir (10) bounded radially by cylinder wall (2) of outer part (1) and bounded axially by end member (3) of outer part (1) and by flange (5), the outer generated surface of outer part (1) being provided with a peripheral groove (7), characterized in that peripheral groove (7) is axially at least as far from end member (3) as the transition between flange (5) and cylinder wall (2) of outer part (1) and an axial groove (11) starts from peripheral groove (7) at at least one place on the periphery and extends to near the oil reservoir (10) or a chamber (14) communicating therewith and its end zone communicates by through bore (12,17) with the oil reservoir (10) or the chamber (14).
REFERENCES:
patent: 2887098 (1959-05-01), Thompson
patent: 3658038 (1972-04-01), Bergmann
patent: 4367701 (1983-01-01), Buente
patent: 4392462 (1983-07-01), Lesher
patent: 4397271 (1983-08-01), Gardner
patent: 4437439 (1984-03-01), Speil
patent: 4465038 (1984-08-01), Speil
patent: 4470381 (1984-09-01), Buente et al.
Doppling Horst
Schaeffler Georg
Speil Walter
Lazarus Ira S.
Motomak Motorenbau, Maschinen-und Werkzeugfabrik Konstruktionen
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