Closed-loop mixture control system for internal combustion...

Details Closed-loop mixture control system for internal combustion... Closed-loop mixture control system for internal combustion...

G - Physics

05

D

341/38.13

G05D 7/06 (2006.01) F02D 41/14 (2006.01) G05D 11/13 (2006.01)

Patent

CA 1090447

ABSTRACT OF THE DISCLOSURE: A closed-loop mixture control system for an inter- nal combustion engine comprises two exhaust composition sensors having different output characteristic curves that intersect at a point corresponding to the stoichiometric air-fuel ratio at which catalytic converters operate at a maximum conversion efficiency. The outputs from the two sensors are used to generate a signal which is substantially free from error intro- duced to the sensors due to varying external conditions.

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