| 摘要 |
A wheeled vehicle has brakes (14,16) controlled by an electronic control unit (22) and a hydraulic control system (20). A switch (32) can be used to cause the control unit to enter a hill descent control mode. In this mode the control unit controls the speed of the vehicle by keeping it at or below a threshold level to achieve controlled descent of a hill without the need for the driver to apply the brakes.The control means is arranged to control the rate of change of speed of the vehicle (10) towards the target speed if the vehicle speed is substantially different from the target speed. |
