Electronically controlled combustion air mixing valve for intern

Details Electronically controlled combustion air mixing valve for intern Electronically controlled combustion air mixing valve for intern

1980-09-02

1981-10-06

Lazarus, Ronald H.

Internal-combustion engines

Charge forming device

Heating of combustible mixture

123552, F02M 3100

Patent

active

042929490

ABSTRACT:
A flapper-type combustion air mixing valve at the junction between a cold air intake duct and a warm air intake duct, the flapper being pivotally adjustable by means of an electropneumatic actuator which has a spring-loaded diaphragm separating an enclosed air-filled pressure chamber from an open drive chamber accommodating the spring and the flapper drive linkage. A heater coil in the pressure chamber receives variable power from a signal transformer, in response to a combustion air temperature sensor and a flapper position sensor. A load-responsive vacuum switch connected to the engine intake manifold switches the signal transformer between adjustments for a higher nominal control temperature for partial-load operation and a lower nominal control temperature for full-load operation.

REFERENCES:
patent: 3450118 (1969-06-01), LeBig
patent: 4161930 (1979-07-01), Bendig
patent: 4207848 (1980-06-01), Dinger

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