Patent ID: 6915777
Filing Date: 2005-07-12
Classification: F02D

Abstract:
1. A system for controlling a general-purpose spark-ignition internal combustion engine having one or two cylinders and an actuator connected to the throttle valve to open or close the throttle value, which introduces an air-fuel mixture produced in a carburetor by mixing gasoline fuel and intake air regulated by the throttle valve into the cylinder to be ignited, comprising: engine speed detecting means for detecting a speed of the engine; desired engine speed determining means for determining a desired speed of the engine; an adaptive controller with a parameter identification mechanism, which receives the detected engine speed and the desired engine speed as inputs, and computes a command value to be supplied to the actuator, using an adaptive parameter identified by the parameter identification mechanism, such that the detected engine speed is brought to the desired speed; and command value determining means for determining an output command value based on the command value computed by the adaptive controller and supplying the output command value to the actuator.