Torque converter clutch virtual adapt learn method and system
First Claim
1. A method of adapting a pressurized fluid supply to a torque converter clutch, comprising:
- learning a first pressure point related to an average of ramp pressure and an average of engine torque over a first time period;
learning a second pressure point related to a second average of ramp pressure and a second average of engine torque over a second time period;
determining a plurality of adapt values based on at least one of an extrapolation and an interpolation between the first pressure point and the second pressure point; and
adapting the pressurized fluid to the torque converter clutch based on the plurality of adapt values.
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Accused Products
Abstract
A method of adapting a pressurized fluid supply to a torque converter clutch is provided. The method includes: learning a first pressure point related to an average of ramp pressure and an average of engine torque over a first time period; learning a second pressure point related to a second average of ramp pressure and a second average of engine torque over a second time period; determining a plurality of adapt values based on at least one of an extrapolation and an interpolation between the first pressure point and the second pressure point; and adapting the pressurized fluid to the torque converter clutch based on the plurality of adapt values.
6 Citations
21 Claims
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1. A method of adapting a pressurized fluid supply to a torque converter clutch, comprising:
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learning a first pressure point related to an average of ramp pressure and an average of engine torque over a first time period; learning a second pressure point related to a second average of ramp pressure and a second average of engine torque over a second time period; determining a plurality of adapt values based on at least one of an extrapolation and an interpolation between the first pressure point and the second pressure point; and adapting the pressurized fluid to the torque converter clutch based on the plurality of adapt values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A torque converter clutch control system for a vehicle including an automatic transmission, comprising:
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at least one valve that controls the flow of pressurized fluid to the torque converter; at least one solenoid that controls a position of the at least one valve; and a controller that sends a signal to the solenoid based on a pressure value, wherein the pressure value is adapted based on an adapt value determined from first and second operating points that are learned by averaging ramp pressure and engine torque over a first and second time periods and a slope value calculated from the first and second operating points. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification