Internal-combustion engines – Poppet valve operating mechanism – Lubrication
Patent
1982-12-20
1984-11-13
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Lubrication
123 9046, 123 9055, F01L 124
Patent
active
044819137
ABSTRACT:
A hydraulic lash adjuster has a cylindrical body and a hollow plunger slidably received within the body, with the upper portion of the plunger extending beyond the body and it is provided with a semi-spherical thrust end for sliding engagement with a complementary shaped thrust receiving member. The plunger has an internal oil reservoir supplied with oil at a predetermined pressure and the thrust end is provided with a through bore for the flow of oil therethrough to effect lubrication of the thrust surfaces. A metering valve assembly is positioned in the bore and includes a ball valve operatively received in a cup-shaped valve retainer having a clover-shaped aperture in the base, the ball valve cooperating with this aperture to control oil from the reservoir.
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Bailey R. S.
General Motors Corporation
Krein Arthur N.
Lazarus Ira S.
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