Patent ID: 8777805
Filing Date: 2014-07-15
Classification: B60K,B60W,Y02T,Y10T

Abstract:
1. A hybrid vehicle being operable to change between a two-wheel drive mode and an all-wheel drive (AWD) mode, the hybrid vehicle comprising: a powertrain including an electric-motor; a primary driveline having a primary pair of drive wheels to receive torque from the powertrain in a two-wheel mode; a secondary driveline having a secondary pair of drive wheels; an AWD connection device arranged to couple the powertrain to the secondary pair of wheels when an AWD mode is required; and a controller, in response to a request to change to the AWD mode, the controller configured to: wherein the electric-motor applies the increased torque to the secondary driveline through the primary driveline while a speed of the secondary driveline is less than a speed of the primary driveline in order to quickly change to the AWD mode without decelerating.