Systems and methods for setting engine speed relative to operator demand
First Claim
1. A method for setting an engine speed of an internal combustion engine in a marine propulsion device of a marine propulsion system to an engine speed setpoint, the method comprising:
- receiving an operator demand from an input device;
learning an adapted maximum engine speed;
calculating an engine speed setpoint by scaling the adapted maximum engine speed relative to the operator demand;
predicting a position of a throttle valve of the engine that is needed to achieve the engine speed setpoint; and
determining a feed forward signal that will move the throttle valve to the predicted position.
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Abstract
A method for setting an engine speed of an internal combustion engine in a marine propulsion device to an engine speed setpoint includes receiving an operator demand from an input device and learning an adapted maximum engine speed. An engine speed setpoint is calculated by scaling the adapted maximum engine speed relative to the operator demand. The method includes predicting a position of a throttle valve of the engine that is needed to achieve the engine speed setpoint, and determining a feed forward signal that will move the throttle valve to the predicted position. A marine propulsion system has an electronic control unit that learns the adapted maximum engine speed, calculates the engine speed setpoint by scaling the adapted maximum engine speed relative to the operator demand, predicts the position of the throttle valve, and determines the feed forward signal that will move the throttle valve to the predicted position.
47 Citations
20 Claims
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1. A method for setting an engine speed of an internal combustion engine in a marine propulsion device of a marine propulsion system to an engine speed setpoint, the method comprising:
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receiving an operator demand from an input device; learning an adapted maximum engine speed; calculating an engine speed setpoint by scaling the adapted maximum engine speed relative to the operator demand; predicting a position of a throttle valve of the engine that is needed to achieve the engine speed setpoint; and determining a feed forward signal that will move the throttle valve to the predicted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A marine propulsion system comprising:
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a marine propulsion device; an internal combustion engine powering the marine propulsion device; a throttle valve metering air intake to the internal combustion engine; an input device for inputting an operator demand; and an electronic control unit, wherein the electronic control unit; learns an adapted maximum engine speed; calculates an engine speed setpoint by scaling the adapted maximum engine speed relative to the operator demand; predicts a position of the throttle valve that is needed to achieve the engine speed setpoint; and determines a feed forward signal that will move the throttle valve to the predicted position. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification