Multiple rocker arm valve control system

Details Multiple rocker arm valve control system Multiple rocker arm valve control system

1995-05-26

1996-06-25

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9041, 123 9043, F01L 1300, F01L 118

Patent

active

055290337

ABSTRACT:
A valve control system for an internal combustion engine. The system includes an outer rocker arm which is engageable with an engine poppet valve, and an inner rocker arm which is engageable with a cam lobe formed in the engine camshaft. The rocker arms are moveable axially relative to one another between a first position wherein the inner rocker arm engages the outer rocker arm to transmit a valve opening force from the camshaft to the poppet valve, and a second position wherein the inner and outer rocker arms are out of engagement and free to rotate relative to one another. The system is adapted for use in a valve train wherein the poppet valve remains closed when the inner and outer rocker arms are in their second position or in a valve train wherein the popper value is opened in response to a first cam lobe profile when the inner and outer rocker arms are in their first position and in response to a second cam lobe profile when they are in their second position.

REFERENCES:
patent: 4151817 (1979-05-01), Mueller
patent: 4203397 (1980-05-01), Soeters, Jr.
patent: 4726332 (1988-02-01), Nishimura
patent: 4762096 (1988-08-01), Kamm et al.
patent: 4768475 (1988-09-01), Ikemura
patent: 5280770 (1994-01-01), Satou et al.
patent: 5297516 (1994-03-01), Hara

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