Braking hydraulic circuit for controlling linear reduction of front/rear wheel braking liquid pressure and solving difference in gradient of front/rear wheel braking pressure in vehicle

摘要

The present invention relates to a braking hydraulic circuit for linear pressure reduction of a front/rear wheel braking liquid pressure in a vehicle. On a liquid pressure return line formed between wheel cylinders and a master cylinder, a two-system liquid pressure control circuit separately passes liquid pressures to be discharged from the wheel cylinders and then unifies the liquid pressures. The liquid pressure control circuit has normal open type solenoid valves and normal close type solenoid valves. Therefore, at the time of implementation of ABS (Antilock Brake System) or TCS (Traction Control System), linear control of a front/rear wheel braking liquid pressure can be realized. In addition, a difference in pressure intensification gradient according to a difference in generation time between the front and rear wheels can be eliminated.