| 摘要 |
PURPOSE: An integration modulator of an ABS(Anti-lock Brake System) and a TCU(Traction Control System) is provided to secure a small-lightened inexpensive integration modulator by integrally forming a relief valve and a mode-switching solenoid valve. CONSTITUTION: An integration modulator of an ABS and a TCU comprises a mode-switching solenoid valve(5) connected to a master cylinder(3), a solenoid valve(62) controlling the flow of oil of wheels(4a,4b), vehicle speed sensors(S1,S2) sensing slip of the wheels, a high pressure pump(7) discharging oil stored in an accumulator(6) by high pressure in an ABS mode, a chamber(9) and an orifice(8) for reducing pulsation of high pressure discharged from the high pressure pump, and a check valve(11) preventing a counter current of oil passing through the orifice. A spool elastically supported by a spring of high elastic coefficient is installed in the mode-switching solenoid valve. Accordingly, the mode-switching solenoid valve is opened in the ABS mode, the oil of the master cylinder is conveyed to the wheels, and the mode-switching solenoid valve compensates pressure of the pump in a TCS mode.
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