System and method for automated apply clutch switching to allow for reduced clutch adaption time
AssigneeFca US LLC
InventorsCorey Allard, Steven Christ
Life of this patent
Estimating the term…
Abstract
A transmission adaptive control system that establishes transmission clutch adaptive values for a vehicle includes a transmission and a controller. The transmission has a plurality of clutches including a first clutch, a second clutch, a third clutch, a fourth clutch and a fifth clutch, wherein clutches of the plurality of clutches actuate between open and closed positions resulting in the transmission shifting between available gears including first gear, second gear, third gear, fourth gear, fifth gear, neutral and reverse. The controller controls actuation of the plurality of clutches to establish adaptive values for all clutches of the plurality of clutches.
Claims16
A transmission adaptive control system that establishes transmission clutch adaptive values for a vehicle, the transmission adaptive control system comprising:
- a transmission having a plurality of clutches including a first clutch, a second clutch, a third clutch, a fourth clutch and a fifth clutch, wherein clutches of the plurality of clutches actuate between open and closed positions resulting in the transmission shifting between available gears including first gear, second gear, third gear, fourth gear, fifth gear, neutral and reverse;
- and
- a controller that controls actuation of the plurality of clutches, wherein the controller is configured to:
- command a first shift of the transmission from neutral to the first gear while engaging the second and third clutch;
- learn a first adaptive value for the first clutch based on the first shift;
- command a second shift of the transmission from neutral to the first gear while engaging the first and third clutch;
- learn a second adaptive value for the second clutch based on the second shift;
- command a third shift of the transmission from neutral to the first gear while engaging the first and second clutch;
- learn a third adaptive value for the third clutch based on the third shift;
- command a fourth shift of the transmission from neutral to the second gear while engaging the first and second clutch;
- learn an adaptive value for the fifth clutch based on the fourth shift;
- command a fifth shift of the transmission from neutral to reverse while engaging the first and second clutch;
- and
- learn an adaptive value for the fourth clutch based on the fifth shift.
A method of implementing a transmission adaptive control system that establishes transmission clutch adaptive values for a transmission of a vehicle, the transmission having a plurality of clutches including a first clutch, a second clutch, a third clutch, a fourth clutch and a fifth clutch, wherein clutches of the plurality of clutches actuate between open and closed positions resulting in the transmission shifting between available gears including first gear, second gear, third gear, fourth gear, fifth gear, neutral and reverse, the method comprising:
- commanding, at a controller, a first shift of the transmission from neutral to the first gear while engaging the second and third clutch;
- learning, at the controller, a first adaptive value for the first clutch based on the first shift;
- commanding, at the controller, a second shift of the transmission from neutral to the first gear while engaging the first and third clutch;
- learning, at the controller, a second adaptive value for the second clutch based on the second shift;
- commanding, at the controller, a third shift of the transmission from neutral to the first gear while engaging the first and second clutch;
- learning, at the controller, a third adaptive value for the third clutch based on the third shift;
- commanding, at the controller, a fourth shift of the transmission from neutral to the second gear while engaging the first and second clutch;
- learning, at the controller, an adaptive value for the fifth clutch based on the fourth shift;
- commanding, at the controller, a fifth shift of the transmission from neutral to reverse while engaging the first and second clutch;
- and
- learning, at the controller, an adaptive value for the fourth clutch based on the fifth shift.
Dependencies are inferred from the claim text.