Methods and systems for providing uniform driveline braking

摘要

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, negative torque of an electric machine is adjusted to mimic negative torque of an engine during engine braking so that the vehicle may transition from regenerative braking to engine braking in a seamless manner.

主权项

1. A method for controlling driveline braking, comprising:
providing driveline braking via an electric machine while rotation of an engine is stopped; and adjusting a torque of the electric machine while the engine is stopped in response to a condition of the engine, where the torque of the electric machine is varied as the condition of the engine varies.