Method and system for monitoring and controlling a transmission
AssigneeBrunswick Corporation
InventorJason F. Pugh
Life of this patent
Estimating the term…
Abstract
A method of monitoring and controlling a transmission in a marine propulsion device comprises the steps of receiving a rotational input speed of an input shaft to the transmission, receiving a rotational output speed of an output shaft from the transmission, receiving a shift actuator position value, and receiving an engine torque value. The method further comprises calculating a speed differential based on the input speed and the output speed, and generating a slip profile based on a range of speed differentials, engine torque values, and shift actuator position values.
Claims20
A method of monitoring and controlling a transmission in a marine propulsion device, the method comprising:
- receiving a rotational input speed of an input shaft to the transmission;
- receiving a rotational output speed of an output shaft of the transmission;
- receiving a shift actuator position value of one or more shift actuators;
- receiving an engine torque value;
- calculating a speed differential based on the input speed and the output speed;
- generating a slip profile based on a range of speed differentials at a range of engine torque values and a range of shift actuator position values;
- determining a wear condition based on the slip profile;
- and
- generating an alert based on the wear condition.
A system for monitoring and controlling a transmission in a marine propulsion device, the system comprising:
- an input speed sensor that senses a rotational input speed of an input shaft to the transmission;
- an output speed sensor that senses a rotational output speed of an output shaft from the transmission;
- a shift actuator sensor that senses a shift actuator position value;
- an engine control unit having a processor;
- an engine control module executable on the processor of the engine control unit that calculates an engine torque value;
- a transmission control module executable on the processor of the engine control unit that:
- calculates a speed differential based on the input speed and the output speed;
- stores the speed differential with respect to at least one of the engine torque value and the shift actuator position;
- generates a slip profile of a range of speed differentials;
- at a range of engine torque values and a range of shift actuator positions;
- and
- controlling the transmission based on the slip profile.
A method of monitoring and controlling a transmission in a marine propulsion device, the method comprising:
- receiving a rotational input speed of an input shaft to the transmission;
- receiving a rotational output speed of an output shaft of the transmission;
- receiving a shift actuator position value of one or more shift actuators;
- receiving an engine torque value;
- calculating a speed differential based on the input speed and the output speed;
- generating a slip profile based on a range of speed differentials at a range of engine torque values and a range of shift actuator position values;
- and
- controlling the transmission based on the slip profile.
Dependencies are inferred from the claim text.