Oil passage structure for rocker-arm shaft for internal combusti

Details Oil passage structure for rocker-arm shaft for internal combusti Oil passage structure for rocker-arm shaft for internal combusti

1991-09-25

1992-06-30

Argenbright, Tony M.

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123196M, F01M 910

Patent

active

051253739

ABSTRACT:
An oil passage structure for a rocker-arm shaft for an internal combustion engine, comprises an outer cylindrical member for rotatably supporting rocker arms and an inner cylindrical member press-fitted into the outer cylindrical member. The inner cylindrical member employs at least one concavity having a given axial length for defining at least two axial oil passages.

REFERENCES:
patent: 4615310 (1986-10-01), Umeha et al.
patent: 4630576 (1986-12-01), Raymond
patent: 4662323 (1987-05-01), Moriya
patent: 4807574 (1989-02-01), Shibata et al.

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