Valve system for internal combustion engine

Details Valve system for internal combustion engine Valve system for internal combustion engine

1993-12-14

1995-08-29

Yuen, Henry C.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9065, 123 9017, F01L 118, F01L 1300

Patent

active

054451159

ABSTRACT:
A valve system is provided for driving engine valves arranged in an internal combustion engine. The valve system comprises a valve drive arm member pivotally supported on a side of a main body of an engine while being maintained in contact with end portions of the engine valves, a first rocker arm for rocking the valve drive arm member, a second rocker arm for causing the valve drive arm member to undergo rocking at an amplitude greater than rocking by the first rocker arm, and coil springs for urging the engine valves in closing directions, respectively. Each coil spring is interposed between a retainer disposed fixedly on the corresponding engine valve and a cylinder head. Each coil spring is designed to avoid interference with a rocking path of the corresponding rocker arm on a side of the coil spring.

REFERENCES:
patent: 1005897 (1911-10-01), Shields et al.
patent: 1640118 (1927-08-01), Ford
patent: 1789209 (1931-01-01), Asbury
patent: 4788946 (1988-12-01), Inoue et al.
patent: 4869214 (1989-09-01), Inoue et al.
patent: 5099806 (1992-03-01), Murata et al.
patent: 5297505 (1994-03-01), Doll et al.

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