Patent ID: 6709303
Filing Date: 2004-03-23
Classification: B63B,B63H,F02B

Abstract:
An internal combustion engine control unit for a jet propulsion type watercraft which runs by a jet propulsion force generated by drawing and spouting water by an internal combustion engine, comprising:rotation speed detecting means which detects a rotation speed of the internal engine; throttle operation state detecting means which detects a state of the throttle operated by a rider; risk avoidance operation detecting means which detects that the rider operates an operation for risk avoidance; and controlling means which increases the rotation speed of the internal combustion engine, when, in a case where a throttle open degree detected by the throttle operation state detecting means is a predetermined value or lower, and it is judged that the jet propulsion type watercraft is running based on the rotation speed of the internal combustion engine detected by the rotation speed detecting means, the risk avoidance operation detecting means detects that the rider performs the risk avoidance operation, wherein the risk avoidance operation detecting means judges whether or not the rider has rapidly operated a steering handle.