Control system for propulsion unit
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United States of America Patent
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Mar 3, 2009
Grant Date -
Jul 17, 2008
app pub date -
Dec 28, 2007
filing date -
Dec 28, 2006
priority date (Note) -
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Abstract
A propulsion unit control system is provided for a boat having plural propulsion units provided side by side and electrically connected in association with two adjacent operation levers. The control system synchronizes engine speeds of the respective propulsion units with each other based at least in part on the position of the two operation levers. The control system determines whether certain factors are satisfied before synchronizing engine speeds. The factors include, for example, whether a deviation in angular position between the two operation levers is within a prescribed range. Another factor is whether a deviation between the throttle opening of a reference propulsion unit and a propulsion unit to be synchronized equal to or less than a prescribed value. If the respective deviations are equal to or smaller than a relevant prescribed value, the engine speeds of the respective propulsion units are controlled for synchronization with each other.
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