| 摘要 |
<p>Improvement is introduced in a conventional feedback 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 connected 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 controller for generating a control signal connected to the p-i controller, the control signal being fed to an airfuel 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.</p> |
