Patent ID: 6065442
Filing Date: 2000-05-23
Classification: F01N,F02D,F02F

Abstract:
An internal combustion engine having at least two combustion chambers, an air induction system for delivering an air charge to said combustion chambers, an exhaust system for discharging the burnt charge from said combustion chambers, a fuel injector is for each combustion chamber for injecting fuel into the air supplied by said induction system for burning in the respective of said combustion chamber, a combustion condition sensor associated with one of said combustion chambers and not for another of said combustion chambers for providing a signal indicative of the air fuel ratio in said one combustion chamber, a feedback control system for controlling the amount of fuel supplied by said fuel injectors to the respective of said combustion chambers, and means for sensing at least one of a starting and warm-up condition of said engine, said feedback control system providing feedback control only for said one combustion chamber when said one condition is sensed and controlling the amount of fuel supplied to the other of said combustion chambers by its fuel injector by adding a fixed incremental value of fuel to the adjusted amount of fuel injected to said one combustion chamber.