KR20020054431A - Apparatus of controlling brake oil pressure in vehicle - Google Patents

Apparatus of controlling brake oil pressure in vehicle Download PDF

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Publication number
KR20020054431A
KR20020054431A KR1020000083501A KR20000083501A KR20020054431A KR 20020054431 A KR20020054431 A KR 20020054431A KR 1020000083501 A KR1020000083501 A KR 1020000083501A KR 20000083501 A KR20000083501 A KR 20000083501A KR 20020054431 A KR20020054431 A KR 20020054431A
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KR
South Korea
Prior art keywords
pressure accumulator
brake
master cylinder
hydraulic pressure
brake fluid
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KR1020000083501A
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Korean (ko)
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KR100375974B1 (en
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최성호
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밍 루
주식회사 만도
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Priority to KR10-2000-0083501A priority Critical patent/KR100375974B1/en
Publication of KR20020054431A publication Critical patent/KR20020054431A/en
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Publication of KR100375974B1 publication Critical patent/KR100375974B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/142—Systems with master cylinder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/10—ABS control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE: A brake hydraulic pressure controller for a vehicle is provided to remove the driving noise of a motor by automatically discharging the brake oil remaining in a low-pressure accumulator to a master cylinder via a spring, not a motor. CONSTITUTION: A brake hydraulic pressure controller includes a low-pressure accumulator to temporarily store brake oil, a motor(103) and a pump(104) to boost the hydraulic pressure by forcibly pumping the brake oil stored in the low-pressure accumulator, a high-pressure accumulator to stabilize the boosted hydraulic pressure, and an orifice. A separate path(105) is prepared between the low-pressure accumulator and a master cylinder(102) to automatically circulate the brake oil to the master cylinder from the low-pressure accumulator by the restorative force of a spring(107) formed in the low-pressure accumulator. A check(106) is interposed in the path to restrain the counterflow of the brake oil to the low-pressure accumulator. Since the brake oil remaining in the low-pressure accumulator is automatically discharged via the path without the driving of a pump and a motor, noise is reduced.

Description

차량용 브레이크 액압 제어장치{ Apparatus of controlling brake oil pressure in vehicle}Apparatus of controlling brake oil pressure in vehicle}

본 발명은 브레이크 액압 제어장치에 관한 것으로, 안티록 브레이크 시스템(Anti-lock Brake System 이하 ABS) 제어모드 종료 후 저압어큐뮬레이터(LPA)(Low Pressure Accumulator)에 남아있는 브레이크액을 저압어큐뮬레이터 내에 구비된 스프링의 복원력에 의해 마스터 실린더 측으로 자동 배출시키기 위한 차량용 브레이크 액압 제어장치에 관한 것이다.The present invention relates to a brake hydraulic pressure control device, the brake fluid remaining in the low pressure accumulator (LPA) after the anti-lock brake system (ABS) control mode termination is provided in the low pressure accumulator A brake hydraulic pressure control device for a vehicle for automatically discharging to the master cylinder side by the restoring force of the present invention.

일반적으로 브레이크 액압 제어장치는 모타, 펌프, 전자제어밸브를 제어하는 전자제어유니트(ECU) 등을 통해 마스터 실린더로부터 제동에 필요한 브레이크 액압을 생성 받아 미리 설정된 제동조건에 따라 ABS 제어를 수행한다.In general, the brake hydraulic pressure control device generates the brake hydraulic pressure required for braking from the master cylinder through the electronic control unit (ECU) for controlling the motor, the pump, the electronic control valve, and performs the ABS control according to the preset braking condition.

도 1은 종래의 차량용 브레이크 액압 제어장치의 유압회로도이다. 도 1에 도시된 바와 같이, 운전자가 브레이크 페달(1)을 밟으면 그 힘이 배력장치(Booster)(2)에 의해 증폭되며, 마스터실린더(Master Cylinder)(3)에서 브레이크 액압이 발생된다. 발생된 브레이크 액압은 노멀오픈밸브(NO)를 지나 휠 실린더(W)에 전달되며, 이때, 휠 실린더(W)의 환류 유로에 배치된 노멀클로즈밸브(NC)가 닫혀 있으므로, 마스터실린더(3)와 휠 실린더(W) 사이의 유압회로는 폐회로가 되어 차륜은 가압상태가 된다.1 is a hydraulic circuit diagram of a conventional brake hydraulic pressure control device for a vehicle. As shown in FIG. 1, when the driver presses the brake pedal 1, the force is amplified by the booster 2, and the brake hydraulic pressure is generated in the master cylinder 3. The generated brake hydraulic pressure is transmitted to the wheel cylinder W through the normal open valve NO. At this time, since the normal close valve NC disposed in the return flow path of the wheel cylinder W is closed, the master cylinder 3 The hydraulic circuit between the wheel cylinder W and the wheel cylinder W is closed, and the wheel is pressed.

그런 후에 노면조건보다 과도한 브레이크 액압이 휠 실린더(W)에 전달되면 차량의 차륜은 회전을 멈춘 채 노면을 미끄러지게 된다. 이에 따라, ABS 제어모드가 동작되어 차륜을 감압상태로 하기 위해 차륜의 최초 닫힘 상태인 노멀클로즈밸브(NC)를 열어 휠 실린더(W)에 갇힌 브레이크액이 배출하여 휠 실린더(W)에 가해진 브레이크 액압을 낮춘다. 이때, 노멀클로즈밸브(NC)를 통하여 배출된 브레이크액은 저압어큐뮬레이터(LPA)로 이동하여 잠시 저장되고, 저장된 브레이크액은 모터(4)의 회전에 의해 동작되는 펌프(5)를 거쳐 다시 액압이 상승하게 된다. 상승된 액압은 고압어큐뮬레이터(HPA)와 오리피스(Orifice)(미도시)를 통과하면서 그 흐름이 안정적으로 유지되며 마스터실린더(3) 또는 노멀오픈밸브(NO)로 환류하게 된다. 이후, 휠 실린더(W)에 전달되는 브레이크 액압을 조절함으로서 휠 실린더(W)가 가압, 유지, 감압되어 제동이 수행된다. FR, RL, RR, FL은 차륜을 보인 것이다.After that, when the brake hydraulic pressure is transmitted to the wheel cylinder W more than the road condition, the wheels of the vehicle slide the road surface while the rotation stops. Accordingly, the ABS control mode is operated so that the brake fluid trapped in the wheel cylinder W is discharged by opening the normally closed valve NC, which is the initial closed state of the wheel, in order to put the wheel in a depressurized state. Lower the hydraulic pressure. At this time, the brake fluid discharged through the normal close valve (NC) is moved to the low pressure accumulator (LPA) and stored for a while, and the brake fluid is stored again through the pump (5) operated by the rotation of the motor (4) Will rise. The elevated hydraulic pressure passes through the high pressure accumulator (HPA) and the orifice (not shown), the flow is kept stable and is returned to the master cylinder (3) or the normal open valve (NO). Thereafter, by adjusting the brake hydraulic pressure transmitted to the wheel cylinder W, the wheel cylinder W is pressurized, maintained, and decompressed to perform braking. FR, RL, RR and FL show wheels.

ABS 제어모드를 수행하면 저압어큐뮬레이터에 브레이크액이 남아있게 되는데 이 브레이크액이 남아있는 상태에서 다음의 ABS 제어모드를 수행하게 되면, 휠 실린더의 브레이크액을 저압어큐뮬레이터로 배출할 수 없어 ABS 제어가 정상적으로 동작되지 않을 수 있다.When the ABS control mode is executed, the brake fluid remains in the low pressure accumulator. If the following ABS control mode is executed while the brake fluid remains, the brake fluid of the wheel cylinder cannot be discharged to the low pressure accumulator. It may not work.

따라서, 종래에는 ABS 제어모드 종료 후 다음 ABS 제어모드에 대비하여 저압어큐뮬레이터에 남아있는 브레이크액을 모터에 의해 펌프를 동작시켜 마스터 실린더 측으로 강제 배출시켰다. 그러나, 이러한 모터의 구동으로 인해 모터의 구동소음이 발생하는 문제점이 있었다.Therefore, conventionally, the brake fluid remaining in the low pressure accumulator after the end of the ABS control mode in preparation for the next ABS control mode was driven by the motor by the pump to force discharge to the master cylinder side. However, there is a problem in that driving noise of the motor occurs due to the driving of the motor.

본 발명은 전술한 문제점을 해결하기 위한 것으로, 본 발명의 목적은 ABS 제어모드 종료 후 다음의 ABS 제어모드에 대비하여 저압어큐뮬레이터에 남아있는 브레이크액을 모터를 구동하여 펌프에 의해 마스터 실린더 측으로 강제 배출시키지 않고 저압어큐뮬레이터의 스프링의 복원력에 의해 마스터 실린더 측으로 자동 배출시키기 위한 차량용 브레이크 액압 제어장치를 제공하는 데 있다.The present invention is to solve the above problems, an object of the present invention is to force the discharge of the brake fluid remaining in the low pressure accumulator to the master cylinder side by the pump in preparation for the next ABS control mode after the ABS control mode is terminated It is to provide a brake hydraulic pressure control device for a vehicle for automatically discharging to the master cylinder side by the restoring force of the spring of the low pressure accumulator.

도 1은 종래의 차량용 브레이크 액압 제어장치의 유압회로이다.1 is a hydraulic circuit of a conventional brake hydraulic pressure control device for a vehicle.

도 2는 본 발명에 따른 차량용 브레이크 액압 제어장치의 유압회로이다.2 is a hydraulic circuit of a brake hydraulic pressure control device for a vehicle according to the present invention.

*도면의 주요 기능에 대한 부호의 설명** Description of the symbols for the main functions of the drawings *

100 : 브레이크 페달101 : 배력장치100: brake pedal 101: hydraulic power device

102 : 마스터 실린더103 : 모터102: master cylinder 103: motor

104 : 펌프105 : 유로104: pump 105: euro

106 : 유로제어수단107 : 스프링106: flow path control means 107: spring

전술한 목적을 달성하기 위한 본 발명은 브레이크 액압을 발생시키는 마스터 실린더, 휠 실린더에 공급되는 상기 브레이크 액압을 조절하기 위한 노멀오픈밸브, 상기 휠 실린더로부터 상기 휠 실린더로부터 환류되는 브레이크 액압을 제어하는 노멀클로즈밸브, 상기 노멀클로즈밸브를 통해 환류되는 브레이크액을 일시 저장하기 위한 저압어큐뮬레이터, 상기 저장된 브레이크액을 펌핑하여 강제 환류시키는 모터 및 펌프를 구비하여 ABS 제어모드를 수행하는 차량용 브레이크 액압 제어장치에 있어서,The present invention for achieving the above object is a master cylinder for generating a brake hydraulic pressure, a normal open valve for adjusting the brake hydraulic pressure supplied to the wheel cylinder, a normal for controlling the brake hydraulic pressure returned from the wheel cylinder from the wheel cylinder In a brake hydraulic pressure control device for a vehicle to perform an ABS control mode including a closed valve, a low pressure accumulator for temporarily storing brake fluid returned through the normal close valve, a motor and a pump for pumping the stored brake fluid and forced reflux. ,

ABS 제어모드 종료시 상기 저압어큐뮬레이터에 남아있는 브레이크액을 상기 마스터 실린더 측으로 배출시키기 위한 유로제어수단을 포함하는 별도의 유로를 구비한 것을 특징으로 한다.And a separate flow path including a flow path control means for discharging the brake fluid remaining in the low pressure accumulator to the master cylinder side when the ABS control mode ends.

이하에서는 본 발명의 바람직한 실시예를 본 도면을 참조하여 상세하게 설명하도록 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

도 2는 본 발명에 따른 차량용 브레이크 액압 제어장치의 구성도이다. 도 2에 도시된 바와 같이, 브레이크 페달(100)로부터 전달된 힘을 증폭하는 배력장치(101), 배력장치(101)에 의해 증폭된 힘을 전달받아 이를 브레이크 액압으로 변환하는 마스터 실린더(102), 마스터 실린더(102)로부터 휠 실린더(W)에 전달되는 브레이크 액압을 제어하는 노멀오픈밸브(NO), 휠 실린더(W)로부터 마스터 실린더(102) 또는 저압어큐뮬레이터로 환류되는 브레이크액을 제어하는 노멀클로즈밸브(NC)가 각각 배치된다.2 is a block diagram of a brake hydraulic pressure control device for a vehicle according to the present invention. As shown in FIG. 2, a master cylinder 102 for receiving a force amplified by the boosting device 101 and a hydraulic pressure device 101 for amplifying a force transmitted from the brake pedal 100 and converting the amplified force into a brake hydraulic pressure. , A normal open valve NO for controlling the brake hydraulic pressure transmitted from the master cylinder 102 to the wheel cylinder W, and a normal for controlling the brake fluid returned from the wheel cylinder W to the master cylinder 102 or the low pressure accumulator Close valves NC are disposed, respectively.

또한, 노멀클로즈밸브(NC)를 통해 환류되는 브레이크액을 일시 저장하는 저압어큐뮬레이터(LPA), 저압어큐뮬레이터(LPA)에 저장된 브레이크액을 펌핑하여 강제 환류시켜 액압을 상승시키는 모터(103) 및 펌프(104), 상승된 액압을 안정적으로 유지시키는 고압어큐뮬레이터(HPA)와 오리피스(미도시)가 마련된다.In addition, the low pressure accumulator (LPA) for temporarily storing the brake fluid refluxed through the normal close valve (NC), the motor 103 and the pump (by pumping the brake fluid stored in the low pressure accumulator (LPA) to force reflux to increase the hydraulic pressure) 104), a high pressure accumulator (HPA) and an orifice (not shown) for stably maintaining the elevated hydraulic pressure are provided.

또한, 상기 저압어큐뮬레이터(LPA)와 마스터 실린더(102)사이에는 ABS 제어모드 종료시 저압어큐뮬레이터(LPA)내에 구비된 스프링(107)의 복원력에 의해 저압어큐뮬레이터(LPA)의 브레이크액이 마스터실린더(102)측으로 자동 환류되도록 별도의 유로(105)가 마련되어 있다. 상기 유로(105)에는 브레이크액이 마스터실린더(102)측으로부터 저압어큐뮬레이터(LPA)로 역류되지 않도록 제어하는 유로제어수단(105)이 개재되어 있으며, 상기 유로제어수단(106)은 열림/닫힘에 따라 브레이크액을 통과 및 차단시키기 위한 노멀오픈밸브(NO)와 노멀클로즈밸브(NC) 같은 전자제어밸브 또는 브레이크액을 단방향으로만 흐르게 하기 위한 체크밸브이다.In addition, between the low pressure accumulator (LPA) and the master cylinder 102 by the restoring force of the spring 107 provided in the low pressure accumulator (LPA) at the end of the ABS control mode, the brake fluid of the low pressure accumulator (LPA) is the master cylinder (102) A separate flow path 105 is provided to automatically return to the side. The flow path 105 has flow path control means 105 for controlling the brake fluid from flowing back to the low pressure accumulator (LPA) from the master cylinder 102 side, the flow path control means 106 is opened / closed Accordingly, it is a check valve for flowing only one direction of an electronic control valve or brake fluid such as a normal open valve (NO) and a normal close valve (NC) for passing and blocking the brake fluid.

도 2의 동작을 살펴보면, 운전자가 브레이크 페달(100)을 밟으면 그 힘이 배력장치(BOOSTER)(101)에 의해 증폭되어 마스터실린더(102)에서 브레이크 액압이 발생된다. 마스터실린더(102)에서 발생된 브레이크 액압은 노멀오픈밸브(NO)를 통해 휠 실린더(W)에 전달되어 차륜은 가압상태가 된다. 이때, 초기에는 노멀오픈밸브(NO)는 열린상태이고, 휠실린더(W)의 유출구상의 유로에 배치된 노멀클로즈밸브(NC)는 닫힌 상태이다.Referring to the operation of FIG. 2, when the driver presses the brake pedal 100, the force is amplified by the booster 101 to generate brake hydraulic pressure in the master cylinder 102. The brake hydraulic pressure generated in the master cylinder 102 is transmitted to the wheel cylinder W through the normal open valve NO, and the wheel is pressed. At this time, initially, the normal open valve NO is in an open state, and the normal close valve NC disposed in the flow path on the outlet of the wheel cylinder W is in a closed state.

그리고, 차륜의 감압시에는 최초 닫힘 상태인 노멀클로즈밸브(NC)를 열어 휠 실린더(W)에 갇힌 브레이크액이 노멀클로즈밸브(NC)를 통해 배출되도록 하여 휠 실린더(W)의 압력을 낮춘다. 이때, 노멀클로즈밸브(NC)를 통해 배출된 브레이크액은 저압어큐뮬레이터(LPA)로 이동하여 잠시 저장되고, 저장된 브레이크액은 모터(103)의 회전에 의해 펌프(104)를 거쳐 다시 액압이 상승하게 된다. 상승된 액압은 고압어큐뮬레이터(HPA)와 오리피스를 지나면서 마스터실린더(102) 또는노멀오픈밸브(NO)로 환류하게 된다.In addition, when the wheel is depressurized, the normally closed valve NC, which is in the first closed state, is opened to allow the brake fluid trapped in the wheel cylinder W to be discharged through the normal close valve NC to lower the pressure of the wheel cylinder W. At this time, the brake fluid discharged through the normal close valve NC is moved to the low pressure accumulator (LPA) and stored for a while, and the stored brake fluid is increased again through the pump 104 by the rotation of the motor 103. do. The elevated hydraulic pressure is returned to the master cylinder 102 or the normal open valve (NO) while passing through the high pressure accumulator (HPA) and the orifice.

위와 같은 과정을 반복 수행하여 휠 실린더(W)의 압력을 가압, 감압 및 유지시켜 ABS 제어모드를 수행한다. 이후 ABS 제어모드가 종료되면, 저압어큐뮬레이터(LPA)에 남아있는 브레이크액은 종래와 같이, 모터에 의해 펌프를 동작시켜 배출시키지 않아도 저압어큐뮬레이터 스프링(107)의 복원력에 의해 별도로 마련된 유로(105)를 통해 마스터실린더(102)로 자동 배출된다.By repeating the above process to pressurize, depressurize and maintain the pressure of the wheel cylinder (W) to perform the ABS control mode. After the ABS control mode is terminated, the brake fluid remaining in the low pressure accumulator (LPA), as in the prior art, the flow path 105 provided separately by the restoring force of the low pressure accumulator spring 107 even if the pump is not discharged by operating the motor. It is automatically discharged to the master cylinder 102 through.

상기 유로(105)에는 브레이크액이 마스터 실린더(102) 측으로부터 저압어큐뮬레이터(LPA)로 역류되지 않도록 하기 위해 브레이크액을 단방향으로만 흐르게 하는 체크밸브가 설치되나, 노멀클로즈밸브(NC)와 같은 전자제어밸브가 설치되면, ABS 제어모드 시에는 최초의 닫힘 상태를 유지하고, ABS 제어모드가 종료되면, 전자제어유니트(미도시)의 신호에 의해 열려 저압어큐뮬레이터(LPA)에 남아있는 브레이크액을 마스터 실린더(102) 측으로 배출시킨다. FR, RL, RR, FL은 차륜을 보인 것이다.The flow path 105 is provided with a check valve for flowing the brake fluid in only one direction so that the brake fluid does not flow back from the master cylinder 102 side to the low pressure accumulator (LPA), but an electronic valve such as a normal close valve (NC) is provided. When the control valve is installed, it maintains the initial closed state in the ABS control mode, and when the ABS control mode ends, the brake fluid remaining in the low pressure accumulator (LPA) is opened by the signal of the electronic control unit (not shown). Discharge to the cylinder 102 side. FR, RL, RR and FL show wheels.

이상에서 상세히 설명한 바와 같이, 본 발명은 ABS 제어모드 수행 후 저압어큐뮬레이터(LPA)에 남아있는 브레이크액을 마스터 실린더 측으로 배출시 모터를 구동하여 펌프에 의해 배출시키지 않음으로서 모터의 구동소음을 없애는 효과가 있다.As described in detail above, the present invention has the effect of eliminating the driving noise of the motor by not driving the motor by discharging the brake fluid remaining in the low pressure accumulator (LPA) to the master cylinder after the ABS control mode is discharged by the pump have.

Claims (3)

브레이크 액압을 발생시키는 마스터 실린더, 휠 실린더에 공급되는 상기 브레이크 액압을 조절하기 위한 노멀오픈밸브, 상기 휠 실린더로부터 상기 휠 실린더로부터 환류되는 브레이크액압을 제어하는 노멀클로즈밸브, 상기 노멀클로즈밸브를 통해 환류되는 브레이크액을 일시 저장하기 위한 저압어큐뮬레이터, 상기 저장된 브레이크액을 펌핑하여 강제 환류시키는 모터 및 펌프를 구비하여 ABS 제어모드를 수행하는 차량용 브레이크 액압 제어장치에 있어서,A master cylinder for generating brake hydraulic pressure, a normal open valve for adjusting the brake hydraulic pressure supplied to the wheel cylinder, a normal closed valve for controlling the brake hydraulic pressure returned from the wheel cylinder from the wheel cylinder, and a reflux through the normal closed valve A low pressure accumulator for temporarily storing brake fluid, a motor for pumping and forcibly refluxing the stored brake fluid and a pump, wherein the vehicle brake hydraulic pressure control device performs an ABS control mode. ABS 제어모드 종료시 상기 저압어큐뮬레이터에 남아있는 브레이크액을 상기 마스터 실린더 측으로 배출시키기 위한 유로제어수단을 포함하는 별도의 유로를 구비한 것을 특징으로 하는 차량용 브레이크 액압 제어장치A brake fluid pressure control device for a vehicle, comprising: a separate flow path including a flow path control means for discharging the brake fluid remaining in the low pressure accumulator to the master cylinder when the ABS control mode ends. 제 1항에 있어서,The method of claim 1, 상기 유로제어수단은 상기 저압어큐뮬레이터의 스프링의 복원력에 의해 상기 저압어큐뮬레이터에 남아있는 브레이크액이 상기 마스터 실린더 측으로만 흐르게 하는 체크밸브인 것을 특징으로 하는 브레이크 액압 제어장치.And the flow passage control means is a check valve for allowing the brake fluid remaining in the low pressure accumulator to flow only to the master cylinder side by the restoring force of the spring of the low pressure accumulator. 제 2항에 있어서,The method of claim 2, 상기 유로제어수단은 ABS 제어모드 시에는 브레이크액이 상기 마스터 실린더 측으로부터 상기 저압어큐뮬레이터로 흐르지 않도록 닫히며, ABS 제어모드 종료 시에는 상기 저압어큐뮬레이터의 스프링의 복원력에 의해 상기 저압어큐뮬레이터에 남아있는 브레이크액이 상기 마스터 실린더 측으로 흐르도록 열리는 전자제어밸브인 것을 특징으로 하는 차량용 브레이크 액압 제어장치.The flow path control means is closed so that the brake fluid does not flow from the master cylinder side to the low pressure accumulator in the ABS control mode, and the brake fluid remaining in the low pressure accumulator by the restoring force of the spring of the low pressure accumulator at the end of the ABS control mode. The brake hydraulic pressure control device for a vehicle, characterized in that the electronic control valve is opened to flow to the master cylinder side.
KR10-2000-0083501A 2000-12-28 2000-12-28 Apparatus of controlling brake oil pressure in vehicle KR100375974B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030010109A (en) * 2001-07-25 2003-02-05 주식회사 만도 Anti-lock brake system for vehicle
KR100774116B1 (en) * 2002-02-08 2007-11-08 주식회사 만도 Apparatus of controlling brake' oil pressure in vehicle
KR100868753B1 (en) * 2007-07-31 2008-11-13 주식회사 만도 Method to clear break oil of low pressure accumulator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200278670Y1 (en) * 1998-10-22 2002-09-19 주식회사 만도 Automotive Antilock Brake System
KR100402275B1 (en) * 2000-01-22 2003-10-22 주식회사 만도 Anti-lock brake system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030010109A (en) * 2001-07-25 2003-02-05 주식회사 만도 Anti-lock brake system for vehicle
KR100774116B1 (en) * 2002-02-08 2007-11-08 주식회사 만도 Apparatus of controlling brake' oil pressure in vehicle
KR100868753B1 (en) * 2007-07-31 2008-11-13 주식회사 만도 Method to clear break oil of low pressure accumulator

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