METHODS AND SYSTEMS FOR OPERATING A VEHICLE DRIVELINE

摘要

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator.

主权项

1. A driveline operating method, comprising:
providing a positive torque to a driveline via a driveline integrated starter/generator (DISG) responding to driver demand torque; operating an engine at an idle speed in a speed control mode while providing the positive torque to the driveline via the DISG; and accelerating the engine from the idle speed in the speed control mode to DISG speed in response to a desired torque; and adjusting application force of a driveline disconnect clutch in response to a driveline disconnect clutch torque estimate based on torque converter torque and DISG torque.