Methods and systems for vehicle driveline torque estimation

摘要

Systems and methods for improving hybrid vehicle torque control are presented. The system and methods included may estimate driveline torque via springs of a dual mass flywheel. The estimated driveline torque may provide feedback for adjusting operation of a driveline disconnect clutch and/or engine torque.

主权项

1. A method for operating a hybrid driveline, comprising:
adjusting engine torque production in response to a torque transferred across a dual mass flywheel, the torque transferred across the dual mass flywheel responsive to an amount of spring deflection within the dual mass flywheel, where a position of an input side of the dual mass flywheel is based on an engine crankshaft position sensor, and where a position of an output side of the dual mass flywheel is based on a dual mass flywheel position sensor located between the dual mass flywheel and a driveline disconnect clutch on the output side of the dual mass flywheel, and where a transmission of the hybrid driveline is shifted into neutral in response to a driver demand torque less than a threshold driver demand torque and a vehicle speed greater than a threshold vehicle speed.