Patent ID: 9365111
Filing Date: 2016-06-14
CPC Classification: B60K,B60W

Claim Text:
1. A motor vehicle having: a prime mover; at least first and second groups of one or more wheels; and a driveline operable by means of a controller to connect a torque transmission path from the prime mover to the first and second groups of one or more wheels such that the first group of one or more wheels and not the second group is coupled to the torque transmission path when the driveline is in a first mode of operation and both the first and second groups of one or more wheels are coupled to the torque transmission path when the driveline is in a second mode of operation, the driveline being operable to connect the second group to the torque transmission path by means of an auxiliary portion comprising first and second releasable torque transmitting means and a prop shaft, the first releasable torque transmitting means being operable to connect a first end of the prop shaft to the torque transmission path, the second releasable torque transmitting means being operable to connect a second end of the prop shaft to the second group of one or more wheels, the controller being operable to control the auxiliary portion to switch the driveline between the first and second modes of operation such that in the first mode the prop shaft is disconnected from both the torque transmission path and the second group of one or more wheels, the driveline being operable to transition from the first mode to the second mode when a second mode trigger condition is met, the second mode trigger condition including the requirement that a magnitude of a value of a vehicle operating parameter of a first set of one or more vehicle operating parameters is less than or greater than a first threshold value, the driveline being further operable subsequently to transition from the second mode to the first mode when a first mode trigger condition is met, the first mode trigger condition including the requirement that the magnitude of the value of the vehicle operating parameter of the first set is greater than or less than a second threshold value, the second threshold value having a value different from the first threshold value.