Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1975-02-18
1978-07-04
Myhre, Charles J.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9056, 123 9043, 123 9035, F01L 124
Patent
active
040982408
ABSTRACT:
Valve gear of preferably cam-over-rocker type for an internal combustion engine including a hydraulic lash adjustment means and in which the rocker is pivoted at one end on a stationary hydraulic adjuster. The lash adjuster operates from oil received under pressure from a gallery provided in the engine lubricant supply system. In the preferred practice, body of the adjuster is stationary with respect to the engine, and has a movable plunger with a one-way check valve for admitting and retaining oil in a chamber between the adjuster body and the plunger. A portion of the plunger extends beyond the body and has a rounded end for pivotally engaging the rocker arm with a reservoir in the plunger communicating with a one-way valve admitting oil to the chamber. An outlet metering means includes an aperture for controlling oil flow to the rocker. The plunger passage provides open communication between the pivot connection and the one-way check valve. An inlet metering means including an annular metering land provides exclusive lubricant communication from an oil entry port in the body to the reservoir.
REFERENCES:
patent: 2870757 (1959-01-01), Dayton
patent: 3153404 (1964-10-01), Van Slooten
patent: 3502058 (1970-03-01), Thompson
patent: 3587539 (1971-06-01), Dadd
patent: 3799129 (1974-03-01), Cornell
patent: 3805753 (1974-04-01), Bergmann
patent: 3855981 (1974-12-01), Loon
patent: 3875908 (1975-04-01), Ayres
patent: 3913538 (1975-10-01), Ableitner
patent: 3967602 (1976-07-01), Brown
Eaton Corporation
Johnston R. A.
Myhre Charles J.
Yates Jeffrey L.
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