US 12,447,946 B1
Torque control modeling for torque control of hybrid electric powertrains
Nadirsh Patel, Auburn Hills, MI (US); Hangxing Sha, Auburn Hills, MI (US); and Abdulquadri Banuso, Auburn Hills, MI (US)
Assigned to FCA US LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Jul. 24, 2024, as Appl. No. 18/782,571.
Int. Cl. B60W 20/40 (2016.01); B60W 10/02 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01)
CPC B60W 20/40 (2013.01) [B60W 10/026 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 2510/1015 (2013.01); B60W 2710/024 (2013.01); B60W 2710/1022 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electrified powertrain that generates and transfers drive torque to a driveline of a hybrid electric vehicle, the electrified powertrain comprising:
an engine having an engine output;
an electric motor having an electric motor output;
a clutch that selectively disengages the engine output from a remainder of the electrified powertrain;
a torque converter that transfers rotating power from at least one of the engine and the electric motor to a transmission; and
a controller configured to:
receive an impeller speed and a turbine speed of the torque converter;
determine a target turbine torque;
determine, coefficients as a function of the impeller speed, turbine speed and target turbine torque based on implementation of a Kalman filter as a function of a positive slip speed of the torque converter;
calculate impeller torque and lock-up clutch torque based on the positive slip speed of the torque converter;
update an adaptive lookup table based on the coefficients; and
determine an adapted turbine torque based on the updated adaptive lookup table.