Outboard motor control apparatus

摘要

In an apparatus for controlling operation of an outboard motor having an internal combustion engine and a transmission being selectively changeable in gear position to establish speeds including at least a first speed and a second speed and transmitting power of the engine to the propeller with a gear ratio determined by established speed, it is determined whether acceleration is instructed to the engine when the second speed is established and operation of the engine is controlled to increase a fuel amount to be supplied to the engine when detected engine speed is greater than a predetermined speed, thereby improving the performance immediately after acceleration is started.

主权项

1. An apparatus for controlling operation of an outboard motor adapted to be mounted on a stern of a boat and having an internal combustion engine to power a propeller through a propeller shaft, and a transmission installed at a location between the engine and the propeller shaft, the transmission being selectively changeable in gear position to establish speeds including at least a first speed and a second speed and transmitting power of the engine to the propeller with a gear ratio determined by established speed, comprising:
an engine speed detector that detects speed of the engine; a throttle opening change amount detector that detects a change amount of throttle opening of the engine; and a controller that controls operation of the transmission and the engine after the second speed is established, wherein the first speed and the second speed are each forward speeds with the first speed having a higher gear ratio than the second speed, and wherein the controller:
controls operation of the transmission to maintain the second speed and operation of the engine to supply a basic fuel amount calculated based on the detected engine speed in response to the detected change amount of the throttle opening being less than a predetermined value,controls operation of the transmission to maintain the second speed and operation of the engine to increase a fuel amount to be supplied to the engine by a predetermined amount more than the basic fuel amount in response to the detected change amount of the throttle opening being equal to or greater than the predetermined value and in response to the detected engine speed being greater than a predetermined speed, the predetermined speed being a fixed value set regardless of the throttle opening, andcontrols operation of the transmission to change the gear position from the second speed to the first speed and of the engine to increase the fuel amount to be supplied to the engine by the predetermined amount more than the basic fuel amount in response to the detected change amount of the throttle opening being equal to or greater than the predetermined value and in response to the detected engine speed being equal to or less than the predetermined speed.