Patent ID: 8555856
Filing Date: 2013-10-15
Classification: F02D

Abstract:
1. An apparatus for controlling a speed of an internal combustion engine installed in an outboard motor adapted to be mounted on a stern of a boat, comprising: an actuator connected to a throttle valve of the engine to open and close the throttle valve; an engine speed controller that controls the engine speed by controlling operation of the actuator; an up command signal outputting device that outputs an up command signal to increase the engine speed when manipulated by an operator; a down command signal outputting device that outputs a down command signal to decrease the engine speed when manipulated by the operator; and an engine speed detector that detects the engine speed, wherein the engine speed controller controls the engine speed to change in response to the up command signal and the down command signal with a change amount of the engine speed per unit time that is made different when the detected engine speed is at or below a reference speed and when the detected engine speed is above the reference speed.