Patent ID: 8096844
Filing Date: 2012-01-17
Classification: B63B,B63H,B63J,F02D,F02P,Y02T

Abstract:
1. An engine control system for a jet-propulsion boat, said engine control system comprising: a first ignition-timing setting unit for setting a first engine ignition timing map for use during non-startup sailing operation of the jet-propulsion boat; a second ignition-timing setting unit for setting a second engine ignition timing map for use during starting of an engine of the jet-propulsion boat; a start-preparation detection unit for detecting an engine state in which a first detected engine speed is maintained for a first predetermined time period or longer at an amount less than or equal to a predetermined startup indicating engine speed; and an ignition-timing switching unit for switching, during the detected engine state of the engine, an active engine ignition timing map from the first engine ignition timing map to the second engine ignition timing map when a second detected engine speed is greater than or equal to the predetermined startup indicating engine speed, wherein the second engine ignition timing map retards the ignition timing when a third detected engine speed is greater than or equal to a predetermined maximum output engine speed.