| 摘要 |
A jet-propelled watercraft is provided which, using a simple configuration, can maintain a propulsion force required for a turn made at the same time as closing of a throttle valve. A jet-propelled watercraft discharges a water jet using a turning force of an engine, obtains a propulsion force from the water jet, and makes a turn by changing the direction of the water jet. The jet-propelled watercraft has an auxiliary intake valve and a control unit (EUC). The auxiliary intake valve is provided in an intake pipe and opens/closes an auxiliary intake passage which provides bypassing of a throttle valve. The ECU performs control such that an opening of the auxiliary intake valve in a state where the rotation speed of the engine is not lower than a threshold value is larger than the opening of the auxiliary intake valve in a state where the engine is idling and such that, when, in a state where the rotation speed is not lower than the threshold value, it is detected that the throttle valve is completely closed and that a steering mechanism has been turned by a prescribed angle or more, a current opening of the auxiliary intake valve is maintained.
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