Control method and control system for a controllable pitch marine propeller
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United States of America Patent
Stats
-
Jan 6, 2009
Grant Date -
Jun 14, 2007
app pub date -
Sep 6, 2004
filing date -
Oct 28, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control method and system for a controllable pitch marine propeller including operating modes comprised of a maneuvering mode and a cruise mode and check modes comprised of an engine check mode and propeller check mode. The cruise mode provides for wide open throttle acceleration and power stop. Smooth transition sub-modes are provided for providing smooth transition between cruise mode and maneuvering mode and vice versa. The system operates by a lever (28) which controls a pitch control unit (10) which in turn controls engine speed and also the pitch of propeller blades (12) of propeller (14). Thus, dependent on the position of the control lever (28) in either maneuvering mode or cruise mode, an appropriate engine speed and propeller pitch is selected automatically for driving a watercraft.
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