Patent ID: 9586664
Date: 2017-03-07
CPC Classifications: B63H,F02D,F02P,Y02T

Claim:
1. A vessel propulsion system comprising: an engine that provides a propulsive force to a vessel; a throttle valve that adjusts an air amount supplied to the engine; a throttle opening degree sensor configured to detect an opening degree of the throttle valve; an accelerator operation unit operated by an operator to adjust the throttle opening degree of the throttle valve, the throttle opening degree corresponding to an operation amount of the accelerator operation unit; a control unit programmed to judge whether the opening degree of the throttle valve is maintained at a fixed value based on an output signal from the throttle opening degree sensor, and when the throttle valve is maintained at the fixed value, to vary an engine output when the throttle opening degree is maintained at the fixed value other than an idling opening degree; and an output operation unit operated by the operator to adjust the engine output when the throttle opening degree is maintained at the fixed value other than the idling opening degree; wherein the engine output that corresponds to the operation amount of the accelerator operation unit is a reference output; and the control unit is programmed to vary the engine output in accordance with an operation of the output operation unit.