Methods and systems for adapting a driveline disconnect clutch transfer function

A driveline disconnect clutch adaptation method, comprising:

• adjusting application force of a driveline disconnect clutch in a vehicle driveline in response to a torque sensor and based on increasing driveline disconnect clutch application pressure from a condition where the driveline disconnect clutch is open while an engine in the vehicle is not combusting air and fuel, where a driveline integrated starter/generator is rotating during adjusting application of the driveline disconnect clutch, and a transmission lock-up clutch is open during adjusting application of the driveline disconnect clutch.

A driveline disconnect clutch adaptation method, comprising:

• rotating a torque converter impeller at a speed less than a threshold speed and a speed based on a maximum desired torque at a torque converter turbine, the torque converter impeller in a vehicle driveline;
• and
• adjusting application force of a driveline disconnect clutch in the vehicle driveline in response to a torque sensor while an engine in the vehicle driveline is not combusting air and fuel.

A driveline disconnect clutch adaptation method, comprising:

• rotating a torque converter impeller at a speed less than a speed based on a maximum desired torque at a torque converter turbine, the torque converter impeller in a vehicle driveline;
• and
• adjusting application force of a driveline disconnect clutch in the vehicle driveline in response to a torque sensor while an engine in the vehicle driveline is not combusting air and fuel, where the torque converter impeller is rotated via a driveline integrated starter/generator and where the driveline integrated starter/generator rotates at a speed that generates a threshold transmission oil pressure that holds a transmission clutch in an applied state.

A driveline disconnect clutch adaptation method, comprising:

• rotating a torque converter impeller at a speed less than a speed based on a maximum desired torque at a torque converter turbine, the torque converter impeller in a vehicle driveline;
• and
• adjusting application force of a driveline disconnect clutch in the vehicle driveline in response to a torque sensor while an engine in the vehicle driveline is not combusting air and fuel and where the torque converter impeller rotates at a speed greater than a speed of the torque converter turbine.