US 12,331,819 B1
Torque transfer device control for a vehicle
James R. Walter, Ann Arbor, MI (US); Steven Gene Reini, Waterford, MI (US); Shane Macfarlane, Northville, MI (US); and Brian Ronald Goodman, Brighton, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 21, 2024, as Appl. No. 18/749,902.
Int. Cl. B60W 10/04 (2006.01); B60W 10/18 (2012.01); F16H 48/30 (2012.01); F16H 48/20 (2012.01)
CPC F16H 48/30 (2013.01) [B60W 10/04 (2013.01); B60W 10/18 (2013.01); B60W 2520/14 (2013.01); B60W 2520/26 (2013.01); B60W 2530/20 (2013.01); B60W 2710/06 (2013.01); B60W 2710/18 (2013.01); F16H 2048/204 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for controlling a torque transfer device for a vehicle, the method comprising:
determining a self-locking torque threshold of the torque transfer device based at least in part on a mechanical design of the torque transfer device;
determining an applied torque on the torque transfer device; and
identifying a self-locking state of the torque transfer device in response to determining that the applied torque is greater than or equal to the self-locking torque threshold;
determining a drivetrain unlocking torque necessary to unlock the torque transfer device in response to identifying the self-locking state;
determining a drivetrain compensation torque necessary to counteract a drivetrain unlocking torque dynamic effect of the drivetrain unlocking torque in response to identifying the self-locking state; and
applying the drivetrain unlocking torque and the drivetrain compensation torque using one or more drivetrain components of the vehicle in response to identifying the self-locking state.