Hydraulic lash adjuster with internal oil pressure control

Details Hydraulic lash adjuster with internal oil pressure control Hydraulic lash adjuster with internal oil pressure control

1975-11-20

1977-03-01

Husar, C. J.

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123 9043, F01L 118

Patent

active

040096963

ABSTRACT:
A hydraulic lash adjuster for use with an internal combustion engine having an overhead cam, includes a stationary body received within a cylinder head bore and a plunger reciprocal within the body. The plunger includes a central cavity defining an oil reservoir. A passage is formed through the lash adjuster body to place the oil reservoir in fluid communication with the lubrication system of the engine. A pair of metering lands are formed on the exterior of the lash adjuster body adjacent the oil inlet passage to reduce the pressure of the oil in the oil reservoir to prevent pump-up.

REFERENCES:
patent: 2964027 (1960-12-01), Dadd
patent: 3153404 (1964-10-01), Van Slooten
patent: 3177857 (1965-04-01), Kuchen
patent: 3240195 (1966-03-01), Sossna
patent: 3267918 (1966-08-01), Ayres
patent: 3322104 (1967-05-01), Abell
patent: 3385274 (1968-05-01), Shunta
patent: 3448730 (1969-06-01), Abell
patent: 3476093 (1969-11-01), Line
patent: 3598095 (1971-08-01), Ayres
patent: 3630179 (1971-12-01), Dadd
patent: 3838669 (1974-10-01), Dadd

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