Closed loop air-fuel ratio control system for use with...

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G - Physics

05

D

341/38.122

G05D 7/06 (2006.01) F02D 35/00 (2006.01) F02D 41/14 (2006.01) F02M 7/133 (2006.01) F02M 7/24 (2006.01)

Patent

CA 1052888

Abstract of the Disclosure In an electronic closed loop control system for controlling the air-fuel ratio of an air-fuel mixture fed to an internal combustion engine to an optimum, the frequency of a dither signal is discretely or continuously changed to change a repetition rate of a pulsating signal in order to prevent engine vibration discomfortable to a driver, the pulsating signal being applied to at least one electromagnetic valve provided for regulating the air-fuel ratio of the air-fuel mixture. - 1 -

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