Patent ID: 8036818
Filing Date: 2011-10-11
Classification: F02D

Abstract:
1. An apparatus for controlling a general-purpose internal combustion engine having a throttle valve installed in an air intake passage connected to a combustion chamber, air sucked in flowing through the air intake passage and mixing with fuel to generate an air-fuel mixture that enters the combustion chamber of a cylinder and ignited to drive a piston to rotate a crankshaft to be connected to a load, comprising: an actuator for opening/closing the throttle valve; a temperature detector that detects a temperature of the engine; a warm-up time period determiner that determines a first warm-up time period during which the engine is to be warmed up and a second warm-up time period which is longer than the first warm-up time period, based on the detected engine temperature; a timer that measures an elapsed time period since starting of the engine; a fuel quantity increaser that increases a fuel quantity to be supplied to the engine until the measured time exceeds the first warm-up time period; and a controller that controls operation of the actuator such that a change rate of throttle opening of the throttle valve is limited within a range until the measured time period exceeds the second warm-up time period after the measured time period exceeded the first warm-up time period.