Internal-combustion engines – Poppet valve operating mechanism – Lubrication
Patent
1998-05-01
1999-01-26
Lo, Weilun
Internal-combustion engines
Poppet valve operating mechanism
Lubrication
123 9035, 123 9037, 123 9043, 123 9057, F01L 116, F01L 124, F01M 910
Patent
active
058627847
ABSTRACT:
A hydraulic lash adjuster of the type in which the plunger assembly (15) includes a ball plunger element (50), and defines a valve opening (57) in the lower plunger member (19). A check valve member (53) is seated in the valve opening (57), for opening the valve opening in response to a relative decrease in the pressure in a high pressure chamber (23). The ball plunger element (50) includes a metering valve element (45) movable between an outward position (FIG. 1) and an inward position (FIG. 2). An elongated member (65) is fixed to move with the metering element (45), and includes a lower end (67) juxtaposed the valve opening (57). When the metering element (45) is in its inward position, the lower end (67) engages the check ball (53) and lifts it from the valve opening, thus facilitating assembly of the lash adjuster, filled with fluid, into an engine.
REFERENCES:
patent: 3587539 (1971-06-01), Dadd
patent: 4004558 (1977-01-01), Scheibe
patent: 4184464 (1980-01-01), Svihlik
patent: 4462353 (1984-07-01), Arai et al.
patent: 4469061 (1984-09-01), Ajiki et al.
patent: 5622147 (1997-04-01), Edelmayer
patent: 5758613 (1998-06-01), Edelmayer et al.
Eaton Corporation
Kasper L. J.
Lo Weilun
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