Vehicle recovery system
AssigneeJaguar Land Rover Limited
InventorsSteve Liggins, Paul Darnell, Jason Walters
Life of this patent
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Abstract
The present invention relates to a vehicle recovery system (1) for a vehicle having at least one driven wheel. The vehicle recovery system (1) is operable to self-recover the vehicle from terrain having a deformable surface affording insufficient traction at the at least one driven wheel to mobilise the vehicle. A recovery controller (2) is provided to maintain at least substantially continuous rotation of said at least one driven wheel at a target recovery speed or within a target recovery speed range to increase the available traction at each driven wheel. The present invention also relates to a vehicle having a vehicle recovery system (1).
Claims18
A system for a vehicle having at least one driven wheel, the system being operable to recover the vehicle from terrain having a deformable surface affording insufficient traction at said at least one driven wheel to mobilize the vehicle, the system comprising:
- a controller configured to maintain at least substantially continuous rotation of said at least one driven wheel of the vehicle at a target recovery speed suitable for increasing the available traction at said at least one driven wheel, the target recovery speed being predefined in dependence on a type of terrain from which the vehicle is to be recovered, and the controller being further configured to alter a rate of change of a rotational speed of said at least one driven wheel in proportion to a difference between a measured rotational speed of said at least one driven wheel and the predefined target recovery speed, such that the rate of change of rotational speed of said at least one driven wheel reduces as the measured rotational speed converges with the predefined target recovery speed.
Dependencies are inferred from the claim text.