Vehicle speed control system to counteract an overrun condition when overcoming an obstacle

摘要

A method for operating a speed control system of a vehicle comprises receiving one or more electrical signals representative of vehicle-related information 102. The method further comprises determining, based on the one or more electrical signals representative of vehicle-related information, that one or more of the wheels of the vehicle have overcome an obstacle, e.g. cresting, or are about to overcome an obstacle and that therefore a reduction in an applied drive torque will be required to maintain the target set-speed of the speed control system 104. The method still further comprises automatically commanding the application of a retarding torque to counteract the effect of an overrun condition in the powertrain subsystem from increasing the speed of the vehicle 106. The system is preferably used in a low speed progress/cruise control system.