US 11,970,153 B2
System and method for learning driveline disconnect clutch liftoff
Akshay Bichkar, Ann Arbor, MI (US); Corey James Blue, Belleville, MI (US); Samuel Melville Glauber, Northville, MI (US); Joseph Kucharski, Livonia, MI (US); and Bradley Dean Riedle, Northville, MI (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Aug. 31, 2022, as Appl. No. 17/823,812.
Prior Publication US 2024/0067159 A1, Feb. 29, 2024
Int. Cl. B60W 10/02 (2006.01); B60W 20/40 (2016.01); F16D 25/00 (2006.01); F16D 48/02 (2006.01)
CPC B60W 20/40 (2013.01) [B60W 10/026 (2013.01); F16D 25/14 (2013.01); F16D 48/02 (2013.01); B60W 2510/0233 (2013.01); B60W 2710/024 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for operating a vehicle, comprising:
via one or more controllers, during de-stroking of a driveline disconnect clutch, monitoring a driveline disconnect clutch pressure and generating an estimated driveline disconnect clutch liftoff pressure via the driveline disconnect clutch pressure;
adjusting a commanded driveline disconnect clutch pressure based on the estimated driveline disconnect clutch liftoff pressure;
generating a derivative of the driveline disconnect clutch pressure; and
generating the estimated driveline disconnect clutch liftoff pressure according to the driveline disconnect clutch pressure after the derivative of the driveline disconnect clutch is less than a threshold value for longer than a threshold time duration.