| 摘要 |
<p>A rear manual brake control method for a electro-hydraulic braking system having electrically operated front and rear boost units (26, 30, 34, 38) selectively activated to produce hydraulic pressure in accordance with pressure commands generated by an electronic controller (12) for operating front and rear service brakes of a vehicle in a normal braking mode, a manually developed hydraulic brake pressure, and electrically operated fluid valves (24, 28, 32, 36) coupled between the manually developed brake pressure and the front and rear service brakes for supplying the manually developed pressure to the front and rear service brakes in a manual back-up mode, the method comprising the steps of: monitoring the vehicle speed (74); and when the vehicle speed is below a threshold, operating the fluid valves for the rear service brakes in the manual back-up mode while continuing to operate the fluid valves for the front service brakes in the normal braking mode (78). <IMAGE></p> |
