Operating arrangement for a gas change valve of an internal engi

Details Operating arrangement for a gas change valve of an internal engi Operating arrangement for a gas change valve of an internal engi

1998-06-12

1999-08-31

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9014, 123 9055, F01L 904, F01L 902, F01L 124

Patent

active

059439882

ABSTRACT:
In an operating arrangement for a gas change valve of an internal combustion engine including an electromagnetic structure having an armature which is connected to the valve and which forms an operating piston disposed in a cylinder for reciprocating movement therein between an upper end position in which the valve is closed and a lower end position in which the valve is open, at least a first electromagnet is arranged adjacent the lower end position of the armature for retaining the armature when the electromagnet is energized, a spring is provided for biasing the valve to a closed position and electro-pneumatic means are provided for supplying gas under pressure to an operating chamber at one side of the piston for actuating the piston in a valve opening direction.

REFERENCES:
patent: 4875441 (1989-10-01), Riheson et al.
patent: 4883025 (1989-11-01), Richeson, Jr.
patent: 4899700 (1990-02-01), Richeson, Jr. et al.
patent: 4967702 (1990-11-01), Richeson et al.
patent: 5022358 (1991-06-01), Richeson

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