Vehicle and method for controlling powertrain components of a vehicle

摘要

A vehicle includes an engine, a traction motor, and a torque converter that is driven by the traction motor. A clutch arrangement mechanically couples an output of the torque converter to transmission gearing. A controller is provided in the vehicle that is configured to command an increase in slip, or decrease in clutch pressure, in the clutch arrangement in response to an increase in speed of the traction motor. The commanding of an increase in slip enables a product of the torque ratio of the torque converter and an input torque to the torque converter to remain generally constant during the increase in speed of the traction motor.

主权项

1. A vehicle comprising:
a torque converter; an electric machine configured to drive the torque converter; transmission gearing; a clutch arrangement configured to mechanically couple an output of the torque converter to the transmission gearing; and at least one controller configured to, based on the vehicle being stopped, idle, or creeping, command an increase in slip of the clutch arrangement in response to an increase in speed of the electric machine such that a product of a torque ratio of the torque converter and an input torque to the torque converter remains generally constant during the increase in speed.