METHODS AND SYSTEMS FOR IMPROVING HYBRID VEHICLE TRANSMISSION SHIFTING

摘要

Systems and methods for improving hybrid vehicle shifting are presented. Specifically, torque supplied to an input shaft of a transmission may be adjusted during torque and inertia phases of a transmission gear shift. The torque supplied to the transmission input shaft may be increased or decreased based on the shift and the shift phase.

主权项

1. A driveline method, comprising:
in response to a transmission gear shift request, increasing transmission input shaft torque via an electric machine when electric machine speed is less than a threshold speed during a torque phase of the transmission gear shift; and decreasing transmission input shaft torque via slipping a driveline disconnect clutch and reducing output torque of the electric machine during an inertia phase of the transmission gear shift.