초록 ▼

A control unit for judges braking slip and/or driving slip of front and rear wheels. Fluid pressure control valve devices receive instructions from the control unit for controlling brake fluid pressure of the front and rear wheel brake apparatuses. A first fluid pressure pump pressurizes and supplie

A control unit for judges braking slip and/or driving slip of front and rear wheels. Fluid pressure control valve devices receive instructions from the control unit for controlling brake fluid pressure of the front and rear wheel brake apparatuses. A first fluid pressure pump pressurizes and supplies brake fluid from hydraulic reservoirs into main conduits connecting a tandem master cylinder with the fluid pressure control valve devices. A first valve device is arranged between the tandem master cylinder and the first fluid pressure pump in the main conduit means connected through the fluid pressure control valve devices to front and/or rear brake apparatuses. The first valve device is normally in free communication and changed over into a position to prohibit brake fluid to flow from the discharging side of the first fluid pressure pump towards the master cylinder side under a first predetermined condition. A second valve device is arranged between the master cylinder and first fluid pressure pump in main conduits connected through the control valve devices at least to the front brake apparatus. The second valve device is normally in free communication and changeable into a position to prevent brake fluid having the discharging side of the first fluid pressure pump towards the master cylinder side under a second predetermined condition. The hydraulic reservoirs consist of a first hydraulic reservoir for previously reserving brake fluid and a second hydraulic reservoir. A second fluid pressure pump is arranged in a conduit connecting the first hydraulic reservoir with the second hydraulic reservoir, the discharging side of which is directed to the suction side of the first fluid pressure pump.

대표청구항 ▼

A fluid pressure brake control apparatus for a vehicle having at least one front wheel and at least one rear wheel, comprising: (a) a tandem master cylinder; (b) a front wheel brake apparatus for said front wheel; (c) a rear wheel brake apparatus for said rear wheel; (d) a control unit for judging b

A fluid pressure brake control apparatus for a vehicle having at least one front wheel and at least one rear wheel, comprising: (a) a tandem master cylinder; (b) a front wheel brake apparatus for said front wheel; (c) a rear wheel brake apparatus for said rear wheel; (d) a control unit for judging braking slip and/or driving slip of said front and rear wheels; (e) a fluid pressure control valve means for receiving instructions from said control unit to control brake fluid pressures to said front and rear wheel brake apparatuses; (f) a hydraulic reservoir means for reserving brake fluid discharged through said fluid pressure control valve means from said front and/or rear wheel brake apparatuses, said hydraulic reservoir means consisting of a first hydraulic reservoir for reserving brake fluid and a second hydraulic reservoir for reserving brake fluid; (g) a main conduit means connecting said tandem master cylinder with said fluid pressure control valve means; (h) a first fluid pressure pump means for pressurizing and supplying brake fluid from said hydraulic reservoir means into said main conduit means, said pump means having a discharging side and a master cylinder side; (i) a first valve device arranged between said tandem master cylinder and said first fluid pressure pump means in said main conduit means, said first valve device being connected through said fluid pressure control valve means to said front and/or rear wheel brake apparatuses for said front and/or rear wheels as driven wheels, said first valve device being normally in free communication and being changed over into a position to prohibit brake fluid to flow from the discharging side of said first fluid pressure pump means towards said master cylinder side under a first predetermined condition; (j) a second valve device arranged between said tandem master cylinder and said first fluid pressure pump means in said main conduit means, said second valve device being connected through said fluid pressure control valve means at least to said front brake apparatus for said front wheel, wherein said front wheels are more apt to lock than said rear wheels, said second valve device being normally in free communication and being changed over into a position to prohibit brake fluid to flow from the discharging side of said first fluid pressure pump means towards said master cylinder side under a second predetermined condition; (k) a second conduit connecting said first hydraulic reservoir with said second hydraulic reservoir; and (l) a second fluid pressure pump means arranged in said second conduit, said second pump means having a discharging side directed to the suction side of said first fluid pressure pump means.