Rocker arm arrangement for multi-valve internal combustion engin

Details Rocker arm arrangement for multi-valve internal combustion engin Rocker arm arrangement for multi-valve internal combustion engin

1986-08-27

1989-05-02

Wolfe, Jr., Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9042, 123 904, F01L 118

Patent

active

048258229

ABSTRACT:
In order to reduce the mass of a rocker arm and simultaneously simplify the adjustment of the valve clearances the rocker arm is pivotally mounted on a universal joint so that it may tilt and establish a three point contact between the universal joint and the tops of the two valve stems. By incorporating a hydraulic lifter in the universal joint arrangement constant lash free automatic zero clearance adjustment is rendered possible. Utilizing a roller as a cam follower permits a reduction in valve train friction loss. To prevent the rocker arm from meandering retaining flanges are provided on the rocker arm which envelope the tops of the valve stems.

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Motor Fan, Mar. 1985, pp. 170, 171, & index page.
Internal Combustion Engine, Oct. 1985, pp. 22-29 and index pp. 120 & 121.

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