Hydraulic valve-clearance compensating element for internal comb

Details Hydraulic valve-clearance compensating element for internal comb Hydraulic valve-clearance compensating element for internal comb

1991-08-21

1992-04-28

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9058, 74569, F01L 124

Patent

active

051078066

ABSTRACT:
A hydraulic valve-clearance compensating element for internal combustion engines in which an internal valve stem is capable of being axially shifted relative to an external stem such that, together with the latter, it delimits an oil-filled storage chamber. The volume of the storage chamber may be altered and is sealed to the outside by a gasket. At least one compressible displacement member is included in the storage chamber to offset changes in volume. This displacement member is made of a closed-celled soft foam with a non-porous surface layer.

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patent: 4815425 (1989-03-01), Deuring et al.
patent: 4825824 (1989-05-01), Deuring et al.

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