Watercraft propulsion system and operation control method therefor
First Claim
1. A watercraft propulsion system including an engine and an electric motor working as drive power sources for a propeller, comprising:
- first instructing means for instructing the activation of at least a stopping mode; and
control means for stopping the engine and for reversely rotating the electric motor when the first instructing means instructs the activation of the stopping mode, and for stopping the engine and for reversely rotating the electric motor when the first instructing means instructs the activation of a reversing mode.
2 Assignments
0 Petitions
Accused Products
Abstract
A watercraft propulsion system can be a hybrid type watercraft propulsion system including an engine and an electric motor both working as drive power sources for a propeller. When an operating lever instructs a speed reduction assist mode as a stopping mode, a controller can stop the engine and reverse the rotational direction of the electric motor to reversely rotate the propeller. The controller can determine whether the speed reduction assist mode is instructed or not based upon a mean movement speed of the operating lever and can control the electric motor based upon a speed of the watercraft. Alternatively, the controller can control the electric motor based upon instructions by the speed reduction assist lever.
13 Citations
13 Claims
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1. A watercraft propulsion system including an engine and an electric motor working as drive power sources for a propeller, comprising:
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first instructing means for instructing the activation of at least a stopping mode; and control means for stopping the engine and for reversely rotating the electric motor when the first instructing means instructs the activation of the stopping mode, and for stopping the engine and for reversely rotating the electric motor when the first instructing means instructs the activation of a reversing mode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An operation control method for a watercraft propulsion system including an engine and an electric motor working as drive power sources for a propeller, comprising:
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receiving an instruction to activate an operation mode; and stopping the engine and reversely rotating the electric motor when the instruction to activate the operation mode is received;
whereinthe step of stopping the engine and reversely rotating the electric motor is performed when the operation mode is a reverse mode of the watercraft; and the step of stopping the engine and reversely rotating the electric motor is performed when the operation mode is a stop mode of the watercraft.
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8. A watercraft propulsion system including an engine and an electric motor both being configured to rotate a propeller, the propulsion system comprising:
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a first input device configured to allow an operator to input forward, reverse, and stop commands, the first input device configured to output at least forward, reverse, and stop output signals; and a controller configured to control the output of the engine and the electric motor based on at least the forward, reverse, and stop commands from the first input device, the controller being configured to disable combustion in the engine and rotate the electric motor in reverse when the output of the first input device changes from forward to reverse output signals, and when the output of the first input device changes from forward to stop output signals. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification