Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1987-05-22
1987-12-01
Cline, William R.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9051, F01L 124
Patent
active
047096683
ABSTRACT:
A self-adjusting hydraulic valve tappet arranged in a bore of a cylindrical guide bore of a cylinder head of an internal combustion engine and being contacted at one end face by a cam of a shaft and bearing with a second end face against a valve stem, the tappet comprising a cup shaped housing comprised of 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 (6,30,32) concentric with the cylindrical wall (2) and arranged in the center of an annular flange element (5) which at its outer circumference merges into the cylindrical wall (2) of the housing and defines an annular oil reservoir (14) between the cylindrical wall (2) and the cylindrical guide sleeve (6,30,32), the oil reservoir (14) being supplied with oil through a bore (15) leading to the outside of the housing, a self-adjusting hydraulic play compensation element (13) being guided for longitudinal movement in the guide sleeve (6,30,32) and bearing with an end face (25) opposite to the end member (3) against the end of the valve stem, characterized in that the cylindrical guide sleeve (6,30,32) extends to the end member (3) of the housing (1) and contacts the inner face (10) thereof.
REFERENCES:
patent: 4430970 (1984-02-01), Holtzberg et al.
patent: 4437439 (1984-03-01), Speil
patent: 4465038 (1984-08-01), Speil
patent: 4590898 (1986-05-01), Buente et al.
Klug Horst
Mocker Wolfgang
Schaeffler George
Speil Walter
Cline William R.
INA Walzlager Schaeffler KG
Neils Peggy
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