KR100750856B1 - Electro-hydraulic brake system - Google Patents

Electro-hydraulic brake system Download PDF

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Publication number
KR100750856B1
KR100750856B1 KR1020030030055A KR20030030055A KR100750856B1 KR 100750856 B1 KR100750856 B1 KR 100750856B1 KR 1020030030055 A KR1020030030055 A KR 1020030030055A KR 20030030055 A KR20030030055 A KR 20030030055A KR 100750856 B1 KR100750856 B1 KR 100750856B1
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South Korea
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wheel
braking
valve
hydraulic
electro
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KR1020030030055A
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Korean (ko)
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KR20040097692A (en
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윤팔주
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주식회사 만도
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W2050/0001—Details of the control system
    • B60W2050/0043—Signal treatments, identification of variables or parameters, parameter estimation or state estimation
    • B60W2050/0047—Digital-analogue (D/A) or analogue-digital (A/D) conversion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • B60W2050/143—Alarm means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2422/00—Indexing codes relating to the special location or mounting of sensors
    • B60W2422/70—Indexing codes relating to the special location or mounting of sensors on the wheel or the tire
    • 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
    • B60Y2400/30—Sensors
    • 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
    • B60Y2400/90—Driver alarms
    • 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
    • B60Y2400/92—Driver displays

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)

Abstract

본 발명은 전원부 또는 압력발생부에서 고장이 발생하여 정상적인 제동이 어려울 경우 운전자의 답력에 의해 작동되는 긴급 보조제동을 위한 유압회로를 갖는 전자유압식 제동장치에 관한 것으로, 특히 긴급제동시 마스터실린더의 압력이 전륜측에 직접 전달되게 하여 전륜을 제동시키고, 후륜의 잔압은 레저버로 리턴시켜 잔압에 의한 후륜의 록킹을 방지함으로써 차량의 안정성을 잃지 않으면서도 양호한 제동이 이루어지록 하는 전자유압식 제동장치에 관한 것이다.The present invention relates to an electro-hydraulic braking device having a hydraulic circuit for emergency auxiliary braking that is operated by the driver's effort when a normal braking is difficult due to a failure in the power supply unit or the pressure generating unit, and in particular, the pressure of the master cylinder during emergency braking. The electro-hydraulic braking system enables braking of the front wheels by direct transmission to the front wheels, and the residual pressure of the rear wheels to return to the reservoir to prevent locking of the rear wheels by the residual pressures, thereby ensuring good braking without losing the stability of the vehicle. will be.

본 발명은 마스터실린더의 MCP 포트와 전륜 우측 휠의 휠 실린더사이의 유압라인에 제 1컷밸브가 설치되고, 마스터실린더의 MCS 포트와 전륜 좌측 휠의 휠 실린더사이의 유압라인에 제 2컷밸브가 설치된다. 또한, 레저버와 후륜의 좌우측 휠의 휠 실린더사이의 유압라인에 페일세이프밸브가 설치된다.The first cut valve is installed in the hydraulic line between the MCP port of the master cylinder and the wheel cylinder of the front wheel, and the second cut valve is installed in the hydraulic line between the MCS port of the master cylinder and the wheel cylinder of the front wheel. Is installed. In addition, a fail-safe valve is installed in the hydraulic line between the reservoir and the wheel cylinders of the left and right wheels of the rear wheels.

Description

전자유압식 제동장치{Electro-hydraulic brake system}Electro-hydraulic brake system

도 1은 종래의 전자유압식 제동장치의 유압회로도이다.1 is a hydraulic circuit diagram of a conventional electro-hydraulic braking device.

도 2는 본 발명에 따른 전자유압식 제동장치의 유압회로도이다.2 is a hydraulic circuit diagram of an electro-hydraulic brake system according to the present invention.

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

10 : 브레이크 페달 11 : 마스터실린더10: brake pedal 11: master cylinder

12 : 휠 실린더 13 : 출구밸브12 wheel cylinder 13 outlet valve

14 : 입구밸브 15 : 모터14: inlet valve 15: motor

16 : 펌프 17 : 페달시뮬레이터16 pump 17 pedal simulator

18 : 압력센서 19 : 축압기18: pressure sensor 19: accumulator

20 : SCV 21 : PCV20: SCV 21: PCV

23 : FSV 24 : SBV23: FSV 24: SBV

25 : PBV25: PBV

본 발명은 전자유압 제동장치에 관한 것으로, 특히 전원부 또는 압력발생부에서 고장이 발생하여 정상적인 제동이 어려울 경우 운전자의 답력에 의해 작동되 는 긴급 보조제동을 위한 유압회로를 갖는 전자유압식 제동장치에 관한 것이다.The present invention relates to an electro-hydraulic braking device, and more particularly, to an electro-hydraulic braking device having a hydraulic circuit for emergency auxiliary braking that is operated by the driver's effort when a failure occurs in the power supply unit or the pressure generating unit and normal braking is difficult. will be.

일반적으로, 전자유압식 제동장치에서는 운전자의 제동의지를 파악하기 위해 브레이크 등의 온/오프여부, 브레이크 페달의 이동거리, 브레이크 페달의 답력, 마스터 실린더의 압력등이 사용되고 있다. 이러한 전자유압식 제동장치는 운전자의 제동의지를 판단 및 제동반력생성 기능을 하는 페달시뮬레이터와 휠 실린더가 2개의 통상개방형 솔레노이드 밸브에 의해 연결 또는 차단되면서 제동기능을 수행한다.In general, the electrohydraulic brake system is used to determine whether the driver brakes, whether the brake is on or off, the distance of the brake pedal, the pedal force of the brake pedal, the pressure of the master cylinder, and the like. The electro-hydraulic braking device performs a braking function while the pedal simulator and the wheel cylinder, which determine the braking intention of the driver and generate the braking reaction, are connected or disconnected by two normally open solenoid valves.

도 1은 종래의 전자유압식 제동장치의 유압회로도이다.1 is a hydraulic circuit diagram of a conventional electro-hydraulic braking device.

도 1에 도시된 바와 같이, 운전자가 브레이크 페달(1)을 밝으면 마스터실린더(2)와 휠 실린더(3) 사이의 두 개의 컷 밸브인 PCV(4), SCV(5)를 닫히게 함으로써 마스터실린더(2)와 휠 실린더(3)의 유압라인이 분리되며, 각 휠 실린더(3)의 압력은 고압축압기(6)에 미리 충전되어 있는 압력을 이용하여 각 휠의 입구밸브(7) 및 출구밸브(8)를 제어함으로써 목표압력을 얻을 수 있다. 여기서 각 휠 실린더(3)의 압력을 독립적으로 제어해야 하는 경우는 밸런스밸브(Balance Valve)인 PBV(9)와 SBV(10)의 차단에 의해 좌우륜간의 압력을 상이하게 제어할 수 있다. 만약, 펌프(11), 축압기(6), 또는 솔레노이드 밸브(7, 8)등과 같은 유압부품이나 전자제어장치에 고장이 발생한 경우 밸브 PCV(4), SCV(5)는 무통전상태가 되어 마스터실린더(2)의 압력이 휠 실린더(3)로 직접 전달되게 된다. 즉, 마스터실린더(2)의 MCP 포트를 통하여 전륜(FL, FR)이 제동되고, MCS 포트를 통하여 후륜(RL, RR)이 제동된다. As shown in FIG. 1, when the driver turns on the brake pedal 1, the master cylinder is closed by closing the two cut valves PCV 4 and SCV 5 between the master cylinder 2 and the wheel cylinder 3. (2) and the hydraulic lines of the wheel cylinder (3) are separated, the pressure of each wheel cylinder (3) is inlet valve (7) and outlet valve of each wheel by using the pressure pre-charged in the high-pressure compressor (6) By controlling (8), the target pressure can be obtained. In this case, when the pressure of each wheel cylinder 3 must be controlled independently, the pressure between the left and right wheels can be controlled differently by blocking the PBV 9 and the SBV 10 which are balance valves. If a failure occurs in the hydraulic components such as the pump 11, the accumulator 6, or the solenoid valves 7 and 8 or the electronic control device, the valve PCV 4 and the SCV 5 are energized. The pressure of the master cylinder 2 is to be transmitted directly to the wheel cylinder (3). That is, the front wheels FL and FR are braked through the MCP port of the master cylinder 2, and the rear wheels RL and RR are braked through the MCS port.                         

그러나, 이와 같은 긴급 상황에서 4륜을 모두 제동하는 경우 각 휠 실린더에 충분한 압력이 발생되도록 하기 위해서는 충분한 액량이 공급되어야 하기 때문에 페달 이동거리가 길어져야 한다. 또한, 후륜의 경우는 전륜에 비해 적은 제동토크를 필요로 하기 때문에 후륜이 전륜에 비해 먼저 록킹되어 차량의 안정성을 잃기 쉬우며, 이를 방지하기 위해서는 후륜에 별도의 감압기구를 설치해야 하는 문제점이 있다.However, when all four wheels are braked in such an emergency situation, the pedal travel distance must be long because a sufficient amount of liquid must be supplied to generate sufficient pressure on each wheel cylinder. In addition, the rear wheels require less braking torque than the front wheels, so the rear wheels are locked before the front wheels, and thus it is easy to lose the stability of the vehicle. .

본 발명은 전술한 문제점을 해결하기 위한 것으로, 본 발명의 목적은 긴급제동시 마스터실린더의 압력이 전륜측에 직접 전달되게 하여 전륜을 제동시키고, 후륜의 잔압은 레저버로 리턴시켜 잔압에 의한 후륜의 록킹을 방지하여 차량의 안정성을 잃지 않으면서도 양호한 제동이 이루어지도록 하는 전자유압식 제동장치를 제공하는 데 있다.The present invention is to solve the above-mentioned problems, an object of the present invention is to brake the front wheel by the pressure of the master cylinder is transmitted directly to the front wheel during emergency braking, the residual pressure of the rear wheel is returned to the reservoir to the rear wheel by the residual pressure It is to provide an electro-hydraulic braking device that prevents the locking of the vehicle to achieve a good braking without losing the stability of the vehicle.

전술한 목적을 달성하기 위한 본 발명에 따른 전자유압식 제동장치는 펌프, 축압기, 브레이크 페달, 레저버, 마스터실린더를 구비하는 전자유압식 제동장치에 있어서, 긴급제동시 전륜의 좌우 휠에 상기 마스터실린더의 압력을 제공하도록 개폐되는 컷밸브, 긴급제동시 후륜의 잔압을 상기 레저버로 리턴시키도록 개폐되는 페일세이프밸브를 포함하는 것을 특징으로 한다.Electro-hydraulic braking device according to the present invention for achieving the above object in the electro-hydraulic braking device having a pump, a accumulator, a brake pedal, a reservoir, a master cylinder, the master cylinder on the left and right wheels of the front wheel during emergency braking Cut valve is opened and closed to provide a pressure, characterized in that it comprises a fail-safe valve that is opened and closed to return the residual pressure of the rear wheel to the reservoir during emergency braking.

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 전자유압식 제동장치의 유압회로도이다.2 is a hydraulic circuit diagram of an electro-hydraulic brake system according to the present invention.

도 2를 참조하면, 본 발명에 따른 전자유압식 제동장치는 제동시 운전자에 의해 조작되는 브레이크 페달(10)과, 페달(10)로부터 힘이 전달되는 마스터실린더(11)가 마련된다. 그리고, 마스터실린더(11)에서 생성된 브레이크 액압을 각 휠 실린더(12)에 공급/제어하기 위한 다수의 전자밸브(13)(14)와, 브레이크액을 펌핑하기 위한 모터(15) 및 펌프(16), 펌프(16)의 구동시 브레이크 액을 저장하기 위한 축압기(19), 마스터실린더(11)와 전륜 좌우측 휠(FL, FR)의 휠 실린더(12)사이의 유로를 개폐하기 위한 컷밸브(20)(21)를 포함한다.Referring to FIG. 2, the electrohydraulic brake system according to the present invention includes a brake pedal 10 operated by a driver during braking, and a master cylinder 11 through which force is transmitted from the pedal 10. In addition, a plurality of solenoid valves 13 and 14 for supplying / controlling the brake hydraulic pressure generated in the master cylinder 11 to each wheel cylinder 12, a motor 15 and a pump for pumping the brake fluid ( 16), a cut for opening and closing the flow path between the accumulator 19 for storing the brake fluid when the pump 16 is driven, the master cylinder 11 and the wheel cylinders 12 of the front wheel left and right wheels FL and FR. Valves 20 and 21.

또한, 본 발명에 따른 전자유압식 제동장치는 마스터실린더측에 마련되어 브레이크액을 임시저장하는 레저버(Reservoir)와, 레저버(22)와 후륜 좌우 휠(RL, RR)의 휠 실린더(12)사이의 유로를 개폐하기 위한 페일세이프밸브(Fail-Safe Valve)(23)를 포함한다. 미설명부호 24와 25는 밸런스밸브(Balance Valve)로 각 휠 실린더(12)의 압력을 독립적으로 제어해야 하는 경우는 좌우륜 간의 압력을 상이하게 제어하는 밸브이고, 미설명부호 17은 페달시뮬레이터, 미설명부호 18은 브레이크 페달(10)의 행정거리를 감지하는 페달행정감지용 센서이다.In addition, the electro-hydraulic brake system according to the present invention is provided on the master cylinder side between the reservoir (Reservoir) for temporarily storing the brake fluid, and between the reservoir 22 and the wheel cylinder 12 of the rear wheel left and right wheels (RL, RR) And a fail-safe valve 23 for opening and closing the flow path. Reference numerals 24 and 25 denote balance valves, and in the case where the pressure of each wheel cylinder 12 needs to be independently controlled, the reference numeral 17 denotes a pedal simulator, Reference numeral 18 is a pedal stroke sensor for sensing the stroke distance of the brake pedal (10).

상기한 전자밸브(13)(14)는 휠 실린더(12)로 공급된 브레이크 액압을 유입 또는 유출하기 위해 휠 실린더(12)의 입구측과 출구측에 각각 배설되는데, 전자밸브(3)(14)는 평상시(off) 폐쇄상태를 유지하는 통상 폐쇄형 비례 솔레노이드 밸브이다. 또한, 컷밸브(20)(21), 페일세이프밸브(23), 밸런스밸브(24)(25)는 통상 개방형 솔레노이드 밸브이다. The solenoid valves 13 and 14 are respectively disposed on the inlet and outlet sides of the wheel cylinder 12 to inflow or outflow of the brake hydraulic pressure supplied to the wheel cylinder 12, and the solenoid valves 3 and 14. Is a normally closed proportional solenoid valve that maintains an off-closed state. The cut valves 20, 21, fail safe valve 23, and balance valves 24, 25 are normally open solenoid valves.                     

이하에서는 도 2의 동작을 살펴보기로 한다.Hereinafter, the operation of FIG. 2 will be described.

운전자가 브레이크 페달(10)을 밟으면 마스터실린더(11)와 휠 실린더(12)사이의 두 개의 컷 밸브인 PCV(21), SCV(20)를 닫히게 함으로써 마스터실린더(11)와 전륜의 좌우 휠(FL, FR)의 휠 실린더(12)의 유압라인은 분리된다.When the driver presses the brake pedal 10, the two cut valves between the master cylinder 11 and the wheel cylinder 12, the PCV 21 and the SCV 20, are closed to close the left and right wheels of the master cylinder 11 and the front wheel ( The hydraulic lines of the wheel cylinders 12 of FL and FR are separated.

또한, 페일세이프(Fail-Safe)용 밸브인 FSV(23)를 닫히게 함으로써 후륜의 좌우 휠(RL, RR)의 휠 실린더(12)의 압력이 레저버(22)측으로 리턴하는 것을 방지할 수 있다.In addition, by closing the FSV 23 which is a fail-safe valve, the pressure of the wheel cylinder 12 of the left and right wheels RL and RR of the rear wheel can be prevented from being returned to the reservoir 22 side. .

각 휠 실린더(12)의 압력은 고압축압기(19)에 미리 충전되어 있는 압력을 이용하여 각 휠의 입구밸브(14) 및 출구밸브(13)를 제어함으로써 목표압력을 얻을 수 있다. 여기서, 제동압력원으로 사용되는 축압기(19)는 고무막과 같은 다이아프램 외에 내부에 충전된 질소가스의 누설이 없는 금속의 벨로우즈(Bellows) 형을 적용함으로써 제동라인 내부에 질소가스의 혼입을 방지할 수 있다.The pressure of each wheel cylinder 12 can obtain the target pressure by controlling the inlet valve 14 and the outlet valve 13 of each wheel using the pressure previously filled in the high pressure compressor 19. Here, the accumulator 19 used as the braking pressure source applies a bellows type of metal which does not leak nitrogen gas filled therein in addition to a diaphragm such as a rubber membrane to inject nitrogen gas into the braking line. You can prevent it.

각 휠 실린더(12)의 압력을 독립적으로 제어해야 하는 경우는 밸런스밸브(Balance Valve)인 PBV(25), SBV(24)의 차단에 의해 좌우륜 간의 압력을 상이하게 제어할 수 있다. 즉 정상적인 상황에서의 작동은 FSV(23)를 닫는 동작을 제외하고는 종래의 구성과 본 발명의 구성의 기본동작은 동일하다.When the pressure of each wheel cylinder 12 must be controlled independently, the pressure between the left and right wheels can be controlled differently by blocking the PBV 25 and the SBV 24 which are balance valves. That is, in the normal operation, the basic operation of the conventional configuration and the configuration of the present invention is the same except that the FSV 23 is closed.

만약, 펌프(16), 축압기(19) 또는 솔레노이드 밸브(13)(14)등과 같은 유압부품이나 전자제어장치에 고장이 발생할 경우 PCV(21), SCV(20)는 무통전상태가 되어 마스터실린더(11)의 압력이 전륜의 좌우 휠(FL, FR)의 휠 실린더(12)로 직접 전달되게 된다. 즉, 마스터실린더(11)의 MCP 포트를 통하여 전륜의 우측 휠(FR)이 제동 되고, MCS 포트를 통하여 전륜의 좌측 휠(FL)이 제동되게 된다. 이때, FSV(23) 측의 유로를 통하여 레저버(22)로 리턴되게 된다. 즉, 본 발명에서의 구성은 시스템 고장시와 같이 긴급제동시 MCS 및 MCP포트측의 유압을 전륜으로만 연결되도록 하며, 후륜은 FSV를 통하여 잔압을 제거하도록 하는 구조를 가지고 있다.If a failure occurs in the hydraulic components such as the pump 16, the accumulator 19, or the solenoid valve 13, 14, or the electronic control device, the PCV 21 and the SCV 20 are energized. The pressure of the cylinder 11 is transmitted directly to the wheel cylinder 12 of the left and right wheels FL and FR of the front wheel. That is, the right wheel FR of the front wheel is braked through the MCP port of the master cylinder 11, and the left wheel FL of the front wheel is braked through the MCS port. At this time, it is returned to the reservoir 22 through the flow path on the FSV 23 side. In other words, the configuration of the present invention is such that when the system brakes, such as when the emergency braking, the hydraulic pressure of the MCS and MCP port side is connected only to the front wheel, the rear wheel has a structure to remove the residual pressure through the FSV.

이상에서 상세히 설명한 바와 같이, 본 발명은 긴급제동시 브레이크 답력에 의해 전륜만을 제동시킴과 함께 후륜의 잔압을 제거하여 후륜의 록킹을 방지함으로써 차량의 안정성을 잃지 않으면서도 양호한 제동을 제공하는 효과가 있다.As described in detail above, the present invention has the effect of providing good braking without losing the stability of the vehicle by preventing the rear wheel locking by braking only the front wheels and removing the residual pressure of the rear wheels by brake response during emergency braking. .

Claims (5)

펌프, 축압기, 브레이크 페달, 레저버, 마스터실린더를 구비하는 전자유압식 제동장치에 있어서,In the electro-hydraulic braking device having a pump, an accumulator, a brake pedal, a reservoir, a master cylinder, 긴급제동시 전륜의 좌우 휠에 상기 마스터실린더의 압력을 제공하도록 개폐되는 컷밸브, 긴급제동시 후륜의 잔압을 상기 레저버로 리턴시키도록 개폐되는 페일세이프밸브를 포함하고,A cut valve that opens and closes to provide pressure of the master cylinder to the left and right wheels of the front wheel during emergency braking, and a fail-safe valve that opens and closes to return the residual pressure of the rear wheel to the reservoir during emergency braking; 상기 컷밸브는 상기 마스터실린더의 MCP 포트와 전륜 우측휠의 휠 실린더사이의 유압라인에 설치되는 제 1밸브, 상기 마스터실린더의 MCS 포트와 전륜 좌측휠의 휠 실린더사이의 유압라인에 설치되는 제 2밸브를 포함하며,The cut valve is a first valve installed in the hydraulic line between the MCP port of the master cylinder and the wheel cylinder of the front wheel, the second valve is installed in the hydraulic line between the MCS port of the master cylinder and the wheel cylinder of the front wheel A valve, 상기 페일세이프밸브는 상기 레저버와 상기 후륜의 좌우측 휠의 휠 실린더사이의 유압라인에 설치되는 것을 특징으로 하는 전자유압식 제동장치.The fail-safe valve is installed in the hydraulic line between the reservoir and the wheel cylinder of the left and right wheels of the rear wheels. 삭제delete 제 1항에 있어서,The method of claim 1, 상기 제 1밸브와 제 2밸브는 통상 개방형 솔레노이드 밸브인 것을 특징으로 하는 전자유압식 제동장치.The first valve and the second valve is an electro-hydraulic braking device, characterized in that the normally open solenoid valve. 삭제delete 제 1항에 있어서,The method of claim 1, 상기 페일세이프밸브는 통상 개방형 솔레노이드 밸브인 것을 특징으로 하는 전자유압식 제동장치.The fail-safe valve is an electro-hydraulic braking device, characterized in that the normally open solenoid valve.
KR1020030030055A 2003-05-13 2003-05-13 Electro-hydraulic brake system KR100750856B1 (en)

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Publication number Priority date Publication date Assignee Title
KR100321501B1 (en) 1996-09-26 2002-01-24 와다 아끼히로 braking device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100321501B1 (en) 1996-09-26 2002-01-24 와다 아끼히로 braking device

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