Shim structure in use for valve tappet of internal combustion en

Details Shim structure in use for valve tappet of internal combustion en Shim structure in use for valve tappet of internal combustion en

1993-08-25

1994-06-28

Nelli, Raymond A.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9051, 74569, F01L 114

Patent

active

053237420

ABSTRACT:
There is provided a structure of a shim to be inserted in a clearance provided between a cam and a tappet in a moving valve mechanism of an internal combustion engine, wherein a volumetric density of the shim body is changed such that it is maximized at an upper surface of the shim, at which the shim is in contact with the cam when a compression load or shock from the cam is applied to the shim, and the density is gradually decreased from the maximized portion to a lower or peripheral portions.

REFERENCES:
patent: 3078194 (1963-02-01), Thompson
patent: 4230491 (1980-10-01), Behnke
patent: 4366785 (1983-01-01), Goloff et al.
patent: 4430970 (1984-02-01), Holtzberg et al.
patent: 4873150 (1989-10-01), Doi et al.
patent: 4909198 (1990-03-01), Shiraya et al.
patent: 5060607 (1991-10-01), Taniguchi
patent: 5249554 (1993-10-01), Tamor et al.

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