System and method for controlling a transmission on a marine engine
AssigneeBrunswick Corporation
InventorBrett Bielefeld
Life of this patent
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Abstract
A method for controlling a transmission of a marine propulsion device powered by an engine is carried out by a control module and includes monitoring a requested gear state of the transmission and a requested throttle position of a throttle valve on the engine. In response to the requested gear state being a neutral state or in response to the requested throttle position decreasing by more than a predetermined amount within a predetermined period of time, the control module controlling at least one of a pressure in a forward clutch of the transmission and a pressure in a reverse clutch of the transmission in a manner that is contraindicated by the requested gear state.
Claims20
A method for controlling a transmission of a marine propulsion device powered by an engine, the method being carried out by a control module and comprising:
- monitoring a requested gear state of the transmission and a requested throttle position of a throttle valve on the engine;
- in response to the requested gear state being a neutral state or in response to the requested throttle position decreasing by more than a predetermined amount within a predetermined period of time, controlling at least one of a pressure in a forward clutch of the transmission and a pressure in a reverse clutch of the transmission in a manner that is contraindicated by the requested gear state.
A marine propulsion system for a marine vessel, the marine propulsion system comprising:
- an engine having an output shaft;
- a propeller having an input shaft;
- a transmission configured to couple the engine's output shaft to the propeller's input shaft in a torque-transmitting relationship, the transmission including a forward clutch configured to operate the transmission in a forward gear state and a reverse clutch configured to operate the transmission in a reverse gear state;
- a positionable control lever configured to request one of the forward gear state and the reverse gear state of the transmission;
- and
- a control module configured to control a pressure in the forward clutch and a pressure in the reverse clutch;
- wherein the control module is configured to control the reverse clutch pressure to a positive reverse clutch pressure value in a manner that is contraindicated by a position of the control lever.
Dependencies are inferred from the claim text.