Marine propulsion system
First Claim
1. A marine propulsion system comprising:
- a power source;
a propeller driven by the power source;
a shift mechanism located between the power source and the propeller, and switchable among three shift positions including forward, neutral, and reverse;
a control lever operable by a vessel operator to switch the shift position of the shift mechanism;
a rotational speed sensor to detect a rotational speed of the propeller; and
a control device to control at least one of the power source and the shift mechanism so as to reduce the rotational speed of the propeller if the rotational speed sensor detects a rotation of the propeller when the control lever is in a position corresponding to the neutral shift position.
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Accused Products
Abstract
A marine propulsion system includes a power source, a propeller, a shift mechanism, a control lever, a rotational speed sensor, and a control device. The shift mechanism is switchable among three shift positions including forward, neutral, and reverse. The control lever is operable by the marine vessel operator to switch the shift position of the shift mechanism. The rotational speed sensor detects the rotational speed of the propeller. The control device controls at least one of the power source and the shift mechanism so as to reduce the rotational speed of the propeller if the rotational speed sensor detects a rotational speed of the propeller when the control lever is in a position corresponding to the neutral shift position. As a result, the propeller is prevented from rotating when a control lever is in a neutral position.
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Citations
9 Claims
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1. A marine propulsion system comprising:
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a power source; a propeller driven by the power source; a shift mechanism located between the power source and the propeller, and switchable among three shift positions including forward, neutral, and reverse; a control lever operable by a vessel operator to switch the shift position of the shift mechanism; a rotational speed sensor to detect a rotational speed of the propeller; and a control device to control at least one of the power source and the shift mechanism so as to reduce the rotational speed of the propeller if the rotational speed sensor detects a rotation of the propeller when the control lever is in a position corresponding to the neutral shift position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification