Boat propulsion system, control device thereof, and control method
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United States of America Patent
Stats
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Feb 22, 2011
Grant Date -
Aug 27, 2009
app pub date -
Feb 26, 2009
filing date -
Feb 27, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A boat propulsion system includes a power source, a propulsion unit, a propeller rotational speed detection section, a shift mechanism, an actuator, a control lever, a shift position detection section, an accelerator opening detection section, and a control unit. When the control lever is operated such that a shift position is changed from a first shift position to a second shift position, while the absolute value of accelerator opening varying speed becomes equal to or larger than a predetermined value, the control unit enables the actuator to maintain the first shift position until the rotational speed of a propeller becomes equal to or lower than a predetermined rotational speed and then to change to the second shift position. This minimizes a load generated on the power source, the power transmission mechanism, and other components of the boat propulsion system.
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