Supplemental air valve for internal combustion engine

Details Supplemental air valve for internal combustion engine Supplemental air valve for internal combustion engine

1987-12-11

1989-08-01

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123574, 137480, F02M12304

Patent

active

048525391

ABSTRACT:
An air metering valve or supplemental air valve connectable in the PCV system of an internal combustion engine having a shiftable valving member which regulates the quantity of supplemental air introduced into the PCV return. The valve spool is spring biased to the open position by a calibration spring. Pressure chambers are formed on opposite sides of the actuating pistona nd connectable to engine vacuum sources. As the degree of vacuum varies in the vacum sources, the valve spool shifts between an open and closed position. The valve may also be used to provide supplemental ambient combustion air under vacuum control independent of the PCV system. In another embodiment of the invention, the major valve components such as the valve body and shiftable valving member are fabricated from suitable plastic materials.

REFERENCES:
patent: 3494339 (1970-02-01), Fernandez et al.
patent: 3809035 (1974-05-01), Winton
patent: 3946710 (1976-03-01), Albano et al.
patent: 3967605 (1976-07-01), Dolfi, Sr.
patent: 4210113 (1980-07-01), Heffernan
patent: 4715351 (1987-12-01), Pankow

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