G - Physics – 05 – D
Patent
G - Physics
05
D
341/38.13
G05D 7/06 (2006.01) F02D 41/14 (2006.01) F02D 43/00 (2006.01) G05D 11/13 (2006.01)
Patent
CA 1077154
Abstract of the Disclosure Improvement is introduced in a conventional feed- back control system for supplying an optimal air-fuel mixture to an internal combustion engine on the basis of a sensed component of exhaust gases thereof. The conventional system generally comprises: a sensor, such as an oxygen analyzer, for sensing a component of exhaust gases of the internal combustion engine, the sensor being deposited in an exhaust line generating an electrical signal representative of the sensed component, a differential signal generator being con- nected to the sensor for generating an electrical signal representative of a differential value between the signal from the sensor and a reference signal, the reference signal being previously determined in due consideration of an optimal supply of an air-fuel mixture to the engine for maximizing the efficiency of a catalytic reactor, a controller including an integrator such as, for example, a p-i (proportional-integral) controller being connected to the differential signal generator, and another con- troller for generating a control signal connected to the p-i controller, the control signal being fed to an air- fuel regulating means for supplying an optimal air-fuel mixture to the engine, wherein the integrator of the p-i controller is substituted by one or two simple circuits embodying the present invention for simplifying the p-i controller without reducing the efficiency thereof. - 1 -
238280
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