| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide sufficient braking force in braking when a vehicle travels in the backing direction and to secure stability of the vehicle. <P>SOLUTION: Master cylinder pressure Pmc of a master cylinder 101 generated in accordance with leg-power of a driver is pressurized by pumps 115, 125 so that braking force is given to front and rear wheels with a front and rear ratio in correspondence with a load a ratio of the rear wheel of which becomes larger than a front and rear ratio in forward braking in backward braking of the vehicle and is supplied as hydraulic pressure of wheel cylinders 109c, 109d of the rear wheel, decompressed by on/off control of decompression solenoid valves 113a, 123b and supplied as hydraulic pressure of wheel cylinders 109a, 109b for the front wheel. Consequently, it is possible to provide the sufficient braking force by giving larger braking force to the rear wheel positioned in the front as the forwarding direction and to restrain locking of the front wheel in backward braking. <P>COPYRIGHT: (C)2008,JPO&INPIT |
