Valve mechanism for an internal combustion engine

Details Valve mechanism for an internal combustion engine Valve mechanism for an internal combustion engine

1990-10-12

1991-06-04

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123 9044, 74519, 74559, F01L 134, F01L 118

Patent

active

050204882

ABSTRACT:
A valve mechanism has a low-speed cam and a high-speed cam, a low-speed rocker arm operatively connected a valve and a high-speed rocker arm. A changeover device is provided for connecting the low-speed and high-speed rocker arm with each other so as to be rocked together by the high-speed cam. A roller follower is rotatably mounted on a shaft provided in the low-speed rocker arm. The high-speed rocker arm has a slipper engaging with the high-speed cam. The changeover device has a piston slidably mounted in the high-speed rocker arm so as to connect the high-speed rocker arm with the low-speed rocker arm.

REFERENCES:
patent: 3882832 (1975-05-01), Ohsaki et al.
patent: 4572118 (1986-02-01), Baguena
patent: 4768467 (1988-09-01), Yamada et al.
patent: 4768475 (1988-09-01), Ikemura
patent: 4794893 (1989-01-01), Masuda et al.
patent: 4854273 (1989-08-01), Uesugi et al.
patent: 4886022 (1989-12-01), Nakai

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