KR100857351B1 - A brake pedal pressure variation reducing apparatus for a vehicle's abs - Google Patents

A brake pedal pressure variation reducing apparatus for a vehicle's abs Download PDF

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Publication number
KR100857351B1
KR100857351B1 KR1020070116733A KR20070116733A KR100857351B1 KR 100857351 B1 KR100857351 B1 KR 100857351B1 KR 1020070116733 A KR1020070116733 A KR 1020070116733A KR 20070116733 A KR20070116733 A KR 20070116733A KR 100857351 B1 KR100857351 B1 KR 100857351B1
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South Korea
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pressure
wheel
abs
accumulator
pressure accumulator
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KR1020070116733A
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Korean (ko)
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염명기
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현대자동차주식회사
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    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • 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
    • 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
    • B60T13/74—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 electrical assistance or drive
    • B60T13/745—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 electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Regulating Braking Force (AREA)

Abstract

A brake pedal pressure variation reducing apparatus for a vehicles equipped with an ABS(Anti-Lock Brake System) is provided to decrease variation of brake pedal pressure by employing a high pressure accumulator which discharges pressure of a wheel or supplies pressure of the high pressure accumulator to the wheel. In a brake pedal pressure variation reducing apparatus for a vehicles equipped with an ABS(Anti-Lock Brake System), a master cylinder(10) contacts a USV(Upper Seal Valve,20). A wheel(50) contacts the USV through an EV(30) and an AV(40). A high pressure accumulator(60) contacts the wheel. A low pressure accumulator(80) contacts the high pressure accumulator through a pump(70). When pressure of the wheel reaches a predetermined level, a pressure line of the master cylinder is shut off and pressure of the wheel is discharged to the high pressure accumulator or pressure of the high pressure accumulator is supplied to the wheel.

Description

ＡＢＳ 장착 차량의 브레이크 페달 답력 변화 저감장치 {a brake pedal pressure variation reducing apparatus for a vehicle's ABS}Brake pedal pressure variation reducing apparatus for a vehicle equipped with an ASS {a brake pedal pressure variation reducing apparatus for a vehicle's ABS}

본 발명은 ABS 장착 차량에서 ABS 구동시에 발생하는 브레이크 페달 답력 변화를 저감할 수 있도록 하는 ABS 장착 차량의 브레이크 페달 답력 변화 저감장치에 관한 것으로, 더 자세하게는 고압 어큐뮬레이터를 이용하여 휠의 압력을 제어하도록 한 것에 관한 것이다.The present invention relates to an apparatus for reducing brake pedal effort change of an ABS equipped vehicle, which can reduce a change in brake pedal effort generated when ABS is driven in an ABS equipped vehicle, and more particularly, to control the pressure of a wheel using a high pressure accumulator. It's about one thing.

일반적으로 ABS 장착 차량에 있어서는 ABS 구동시 휠의 압력을 빼주기 위하여 리저버로 유체를 배출시키게 되며, 또한 휠의 슬립비율(slip-ratio)을 일정하게 유지시키기 위하여 리저버로 유체를 배출시키거나 다시 휠로 유입시키게 된다.In general, in a vehicle equipped with ABS, the fluid is discharged to the reservoir to relieve the pressure of the wheel when the ABS is driven, and the fluid is discharged to the reservoir to maintain a constant slip ratio of the wheel or to the wheel again. Inflow.

그런데 이러한 과정에서 마스터실린더와 기계적 구조로 연결된 브레이크 페달에 물리적인 힘이 가해지게 되고, 이는 운전자의 브레이크 페달 답력 변화를 일으키게 된다.However, in this process, a physical force is applied to the brake pedal connected to the master cylinder and the mechanical structure, which causes a change in the driver's brake pedal effort.

즉, 일반 제동시에는 도 1a와 같이 부스터를 이용하여 마스터실린더를 밀게 되고, 유체의 저항이 크지 않기 때문에 답력의 변화는 부드러운 상태가 되지만 ABS 제어시에는 도 1b와 같이 ABS에 의해 유체가 마스터실린더로 유입되어 브레이크 페달의 답력 변화가 생기게 된다.In other words, during normal braking, the master cylinder is pushed using a booster as shown in FIG. 1A. Since the resistance of the fluid is not large, the change of the step force becomes smooth, but the ABS is controlled by the ABS as shown in FIG. Inflow to the brake pedal changes the pedal force.

한편 운전자는 이러한 브레이크 페달 답력 변화에 대해는 불쾌감을 느낄 수 있게 되며, 또한 ABS 모듈에 대해 지식이 없는 운전자는 브레이크 페달 답력 변화가 있을 때에 차량이 오작동을 한다고 판단하는 경우도 있다.On the other hand, the driver may feel uncomfortable with such a change in the brake pedal effort, and a driver without knowledge of the ABS module may determine that the vehicle malfunctions when there is a change in the brake pedal effort.

본 발명은 상기와 같은 종래의 문제점을 감안하여 안출한 것이며, 그 목적이 ABS 장착 차량에 있어서 ABS 제어시에 마스터실린더로 휠의 압력이 유입되거나 배출됨으로써 발생되는 브레이크 페달의 답력 변화를 저감할 수 있도록 하는 ABS 장착 차량의 브레이크 페달 답력 변화 저감장치를 제공하는 데에 있는 것이다.The present invention has been made in view of the above-described conventional problems, and its object is to reduce the change in the pedal effort of the brake pedal caused by the inflow or discharge of wheel pressure into the master cylinder during ABS control in a vehicle equipped with ABS. The present invention is to provide a brake pedal change reduction device for an ABS equipped vehicle.

본 발명은 상기의 목적을 달성하기 위하여 휠에 고압 어큐뮬레이터를 접속하여 ABS 제어시에 휠에 제동압력이 일정압력이 되면 USV를 닫아 마스터실린더 유압라인을 차단하고 고압 어큐뮬레이터로 휠의 압력을 배출하거나 고압 어큘뮬레이터의 압력을 휠에 공급하는 것을 특징으로 한다.In order to achieve the above object, the present invention connects a high pressure accumulator to a wheel and closes the USV when the braking pressure reaches a certain pressure in the ABS control, shuts off the master cylinder hydraulic line and discharges the pressure of the wheel to the high pressure accumulator or the high pressure. It is characterized by supplying the pressure of the accumulator to the wheel.

즉, 본 발명은 마스터실린더에 USV가 접속되고, USV에 EV와 AV를 통해 휠이 접속되는 ABS 장착 차량에 있어서, 상기 휠에 고압 어큐뮬레이터를 접속하고, 고압 어큐뮬레이터에 펌프를 통해 저압 어큐뮬레이터를 접속하여 휠의 일정압력 도달시에 마스터실린더 유압라인을 차단하고 휠의 압력을 고압 어큐뮬레이터로 배출하거나 고압 어큐뮬레이터의 압력을 휠로 유입시키도록 하여서 되는 것이다.That is, in the present invention, in the ABS-equipped vehicle in which the USV is connected to the master cylinder and the wheel is connected to the USV through EV and AV, the high pressure accumulator is connected to the wheel, and the low pressure accumulator is connected to the high pressure accumulator through a pump. When the constant pressure of the wheel is reached, the master cylinder hydraulic line is shut off and the pressure of the wheel is discharged to the high pressure accumulator or the pressure of the high pressure accumulator is introduced to the wheel.

본 발명에 의하면 ABS 제어시에 휠의 일정 제동압력이 가해진 후에 휠의 제동압력이 마스터실린더로 배출되거나 마스터실린더로부터 휠에 제동압력이 유입되지 않게 되므로 브레이크 페달 답력 변화를 방지할 수 있게 되며, 그에 따라 보다 안정적인 제동감을 제공할 수 있게 되어 차량의 상품성 향상에 크게 기여할 수 있게 되는 등의 효과를 얻을 수 있게 된다.According to the present invention, since a certain braking pressure of the wheel is applied during ABS control, the braking pressure of the wheel is not discharged to the master cylinder or the braking pressure does not flow into the wheel from the master cylinder, thereby preventing a change in brake pedal effort. As a result, a more stable braking feeling can be provided, which can greatly contribute to improving the merchandise of the vehicle.

이하 본 발명의 구체적인 기술내용을 첨부도면에 의거하여 더욱 자세히 설명하면 다음과 같다.Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

도 2에는 브레이크액 소요액량과 캘리퍼의 압력의 관계를 나타낸 그래프가 도시되어 있고, 도 3에는 ABS 제동시 휠속 변화 그래프가 도시되어 있으며, 도 4에는 ABS 제동시의 압력 변화 그래프가 도시되어 있다.FIG. 2 is a graph showing the relationship between the amount of brake fluid required and the pressure of the caliper. FIG. 3 is a graph showing a change in wheel speed during ABS braking, and FIG. 4 is a graph of pressure variation during ABS braking.

도 2 내지 도 4의 그래프와 같이 ABS 제동시에 압력 변화의 폭은 크지 않으며, 일정 압력이후 소요액량과 캘리퍼 압력은 선형관계이고, 소요액량의 변화가 크 지 않다.As shown in the graph of Figures 2 to 4, the width of the pressure change at the time of ABS braking is not large, the required amount and the caliper pressure after a certain pressure is linear relationship, the change in the required amount is not large.

도 5a에는 본 발명의 휠 일정압력 도달 전의 압력 유입, 배출 상태도가 도시되어 있고, 도 5b에는 본 발명의 휠 일정압력 도달 후의 압력 유입, 배출 상태도가 도시되어 있다. Figure 5a shows the pressure inflow, discharge state diagram before reaching the wheel constant pressure of the present invention, Figure 5b shows the pressure inflow, discharge state diagram after reaching the wheel constant pressure of the present invention.

본 발명은 마스터실린더(10)에 USV(20)가 접속되고, USV(20)에 EV(30)와 AV(40)를 통해 휠(50)이 접속되는 ABS 장착 차량에 있어서, 상기 휠(50)에 고압 어큐뮬레이터(60)를 접속하고, 고압 어큐뮬레이터(60)에 펌프(70)를 통해 저압 어큐뮬레이터(80)를 접속하여 휠(50)의 일정압력 도달시에 마스터실린더 유압라인을 차단하고 휠(50)의 압력을 고압 어큐뮬레이터(60)로 배출하거나 고압 어큐뮬레이터(60)의 압력을 휠(50)로 유입시키도록 하여서 되는 것이다.In the present invention, the wheel 50 is connected to the master cylinder 10, the USV 20 is connected to the USV 20, the wheel 50 through the EV 30 and the AV 40, the wheel 50, The high pressure accumulator 60 is connected to the high pressure accumulator 60, and the low pressure accumulator 80 is connected to the high pressure accumulator 60 through the pump 70 to shut off the master cylinder hydraulic line when the constant pressure of the wheel 50 is reached. The pressure of 50 may be discharged to the high pressure accumulator 60 or the pressure of the high pressure accumulator 60 may be introduced into the wheel 50.

도 6에는 본 발명의 USV의 닫힘 전후의 압력 그래프가 도시되어 있다. 6 shows a pressure graph before and after closing of the USV of the present invention.

본 발명에 있어서는 도 5와 같이 제동 초기에는 마스터실린더(10)로부터 휠(50)에 압력이 유입되고, 휠(50)의 압력이 일정압력에 도달하게 되면 USV(20)를 닫아 마스터실린더(10)와 휠(50) 사이의 유압라인을 차단하고 고압 어큐뮬레이터(60)를 통해 감압모드와 유지모드, 증압모드를 반복 수행하게 된다.In the present invention, as shown in FIG. 5, in the initial stage of braking, pressure flows from the master cylinder 10 to the wheel 50, and when the pressure of the wheel 50 reaches a predetermined pressure, the USV 20 is closed to close the master cylinder 10. ) And the hydraulic line between the wheel 50 and the high pressure accumulator 60 are repeatedly performed in the decompression mode, the maintenance mode, and the pressure-increasing mode.

도 6의 각 구간의 제어상태 및 휠 압력변화는 다음 표와 같다.Control state and wheel pressure change of each section of Figure 6 are as follows.

ABS 온/오프ABS on / off 제어상태Control status 휠 압력Wheel pressure 마스터실린더 압력Master cylinder pressure 일반제동General braking ① apply ① apply 증가(유입)Increase (inflow) 증가(유입)Increase (inflow) ABS 온ABS on ② Dump ② Dump 감소(방출)Decrease (emission) 증가(유입)Increase (inflow) ③ Hold ③ Hold 유지maintain 유지maintain ④ Apply ④ Apply 증가(유입)Increase (inflow) 감소(방출)Decrease (emission) dump    dump 감소(방출)Decrease (emission) 증가(유입)Increase (inflow) ↓↓ ↓↓ ↓↓

본 발명에 있어서 USV(20)를 닫는 시점은 휠(50)이 일정압력 도달하여 두 번 째 잠금(Lock)이 진행되는 되는 시점이며, USV(20)를 닫은 후에 휠(50)의 잠금 정도에 따라 감압모드, 유지모드, 증압모드를 반복 수행하게 된다.In the present invention, the time point for closing the USV 20 is a time point at which the wheel 50 reaches a predetermined pressure and a second lock proceeds, and the degree of locking of the wheel 50 after the USV 20 is closed. Therefore, the decompression mode, the maintenance mode, and the boost mode are repeatedly performed.

도 7a 및 도 7b, 도 7c에는 감압모드시 및 유지모드시, 증압모드시의 압력 유입, 배출 상태도가 도시되어 있다. 7A, 7B, and 7C show pressure inflow and discharge state diagrams in the decompression mode, the maintenance mode, and the boost mode.

도 7a와 같이 휠 잠금(Wheel Lock)이 진행되는 감압모드(Dump)는 EV 닫힘, AV 열림, 모터 작동 상태이며, 감압모드에서는 휠(50)의 압력이 AV(40)를 통해 저압 어큐뮬레이터(80)로 빠르게 빠지고 펌프(70)를 통해 고압 어큐뮬레이터(60)로 유입되며, 마스터실린더(10)로 유입되는 양은 없게 된다.As shown in FIG. 7A, the decompression mode (Dump) in which the wheel lock is performed is EV closed, the AV is open, and the motor is in operation. In the decompression mode, the pressure of the wheel 50 is reduced by the low pressure accumulator 80 through the AV 40. And quickly enters the high pressure accumulator 60 through the pump 70, and there is no amount introduced into the master cylinder 10.

도 7b와 같이 휠 안정화 경향의 유지모드(Hold)는 EV 닫힘, AV 닫힘, 모터 작동 상태이며, 휠(50)이 안정화되는 경향이 있어 휠(50)에서 압력을 많이 뺄 필요가 없고, 저압 어큐뮬레이터(80)에 유체가 있을 경우 펌프(60)를 통해 고압 어큐뮬레이터(60)로 이동시키게 된다.As shown in FIG. 7B, the holding mode Hold of the wheel stabilization trend is an EV closed state, an AV closed state, and a motor operating state, and the wheel 50 tends to be stabilized, and thus, there is no need to reduce the pressure from the wheel 50, and the low pressure accumulator If there is fluid in the 80 is to move to the high pressure accumulator 60 through the pump (60).

도 7c와 같이 휠이 살아나는 경우가 확실한 증압모드(Apply)는 EV 열림, AV 닫힘, 모터 작동 상태이며, 휠(50)이 확실히 살아날 경우 고압 어큐뮬레이터(60)에 충전된 양을 통해 증압을 수행하게 되며, 마스터실린더(10)에서 공급되는 양은 없게 된다.As shown in FIG. 7C, the boosting mode (Apply) which is sure when the wheel is alive is EV open, the AV is closed, and the motor is in operation. When the wheel 50 is alive, the boosting is performed through the amount charged in the high-pressure accumulator 60. And, there is no amount supplied from the master cylinder (10).

도 8에는 ESP ECU에서 구동되는 경우의 유압회로도가 도시되어 있는 바, ESP ECU에서의 구동시에는 어큐뮬레이터 1개만 필요하게 되고, HSV 닫힘외에 ABS ECU와 차이가 없다.8 shows a hydraulic circuit diagram when the ESP ECU is driven. When driving the ESP ECU, only one accumulator is required, and there is no difference between the ABS ECU and the HSV.

도 1a는 일반제동 상태의 마스터실린더 부위 종단면도Figure 1a is a longitudinal cross-sectional view of the master cylinder in the general braking state

도 1b는 ABS 제어 상태의 마스터실린더 부위 종단면도Figure 1b is a longitudinal cross-sectional view of the master cylinder portion in the ABS control state

도 2는 브레이크액 소요액량과 캘리퍼의 압력의 관계를 나타낸 그래프2 is a graph showing the relationship between the amount of brake fluid required and the pressure of the caliper;

도 3은 ABS 제동시 휠속 변화 그래프3 is a change in wheel speed during ABS braking

도 4는 ABS 제동시의 압력 변화 그래프4 is a graph of pressure change during ABS braking

도 5a는 본 발명의 휠 일정압력 도달 전의 압력 유입, 배출 상태도Figure 5a is a pressure inlet, discharge state before the wheel reaches a certain pressure of the present invention

도 5b는 본 발명의 휠 일정압력 도달 후의 압력 유입, 배출 상태도Figure 5b is a pressure inflow, discharge state after reaching a certain pressure of the wheel of the present invention

도 6은 본 발명의 USV의 닫힘 전후의 압력 그래프Figure 6 is a pressure graph before and after closing the USV of the present invention

도 7a는 본 발명의 감압모드시의 압력 유입, 배출 상태도Figure 7a is a pressure inflow, discharge state in the decompression mode of the present invention

도 7b는 본 발명의 유지모드시의 압력 유입, 배출 상태도Figure 7b is a pressure inflow, discharge state in the maintenance mode of the present invention

도 7c는 본 발명의 증압모드시의 압력 유입, 배출 상태도Figure 7c is a pressure inflow, discharge state in the boost mode of the present invention

도 8은 ESP ECU에서 구동되는 경우의 유압회로도8 is a hydraulic circuit diagram when driven in an ESP ECU

* 도면의 주요 부분에 대한 부호 설명 *Explanation of symbols on the main parts of the drawings

10 : 마스터실린더 20 : USV10: master cylinder 20: USV

30 : EV 40 : AV30: EV 40: AV

50 : 휠 60 : 고압 어큐뮬레이터50: wheel 60: high pressure accumulator

70 : 펌프 80 : 저압 어큐뮬레이터70: pump 80: low pressure accumulator

Claims (3)

마스터실린더(10)에 USV(20)가 접속되고, USV(20)에 EV(30)와 AV(40)를 통해 휠(50)이 접속되는 ABS 장착 차량에 있어서, 상기 휠(50)에 고압 어큐뮬레이터(60)를 접속하고, 고압 어큐뮬레이터(60)에 펌프(70)를 통해 저압 어큐뮬레이터(80)를 접속하여 휠(50)의 일정압력 도달시에 마스터실린더 유압라인을 차단하고 휠(50)의 압력을 고압 어큐뮬레이터(60)로 배출하거나 고압 어큐뮬레이터(60)의 압력을 휠(50)로 유입시키도록 한 것을 특징으로 하는 ABS 장착 차량의 브레이크 페달 답력 변화 저감장치.In the ABS-equipped vehicle in which the USV 20 is connected to the master cylinder 10 and the wheel 50 is connected to the USV 20 through the EV 30 and the AV 40, the high pressure is applied to the wheel 50. The accumulator 60 is connected and the low pressure accumulator 80 is connected to the high pressure accumulator 60 through the pump 70 to shut off the master cylinder hydraulic pressure line when the constant pressure of the wheel 50 is reached, A device for reducing brake pedal effort change of an ABS equipped vehicle, characterized in that the pressure is discharged to the high pressure accumulator (60) or the pressure of the high pressure accumulator (60) is introduced into the wheel (50). 제1항에 있어서, 마스터실린더(10)로부터 휠(50)에 압력이 유입되고, 휠(50)의 압력이 일정압력에 도달하게 되면 USV(20)를 닫아 마스터실린더(10)와 휠(50) 사이의 유압라인을 차단하고 고압 어큐뮬레이터(60)를 통해 감압모드와 유지모드, 증압모드를 반복 수행하는 것을 특징으로 하는 ABS 장착 차량의 브레이크 페달 답력 변화 저감장치.The master cylinder 10 and the wheel 50 are closed by closing the USV 20 when pressure is introduced into the wheel 50 from the master cylinder 10 and the pressure of the wheel 50 reaches a predetermined pressure. The brake pedal pedal pressure change reduction device of the ABS-equipped vehicle, characterized in that to cut the hydraulic line between the) and repeatedly performing the decompression mode and the maintenance mode, the pressure-increasing mode through the high-pressure accumulator (60). 제2항에 있어서, 감압모드(Dump)는 EV 닫힘, AV 열림, 모터 작동 상태이고, 휠(50)의 압력이 AV(40)를 통해 저압 어큐뮬레이터(80)로 빠르게 빠지고 펌프(70) 를 통해 고압 어큐뮬레이터(60)로 유입되며,The pressure reduction mode (Dump) is in the EV closed, AV open, motor operating state, the pressure of the wheel 50 is quickly released to the low pressure accumulator 80 through the AV (40) and through the pump 70 Flows into the high pressure accumulator (60), 유지모드(Hold)는 EV 닫힘, AV 닫힘, 모터 작동 상태이고, 저압 어큐뮬레이터(80)에 유체가 있을 경우 펌프(60)를 통해 고압 어큐뮬레이터(60)로 이동시키게 되며,Hold mode (Hold) is EV closed, AV closed, motor operating state, if there is fluid in the low pressure accumulator 80 is moved to the high pressure accumulator 60 through the pump 60, 증압모드(Apply)는 EV 열림, AV 닫힘, 모터 작동 상태이고, 고압 어큐뮬레이터(60)에 충전된 양을 통해 증압을 수행하게 되는 것을 특징으로 하는 ABS 장착 차량의 브레이크 페달 답력 변화 저감장치.Boosting mode (Apply) is EV open, AV closed, the motor operating state, the brake pedal effort change reduction device of the ABS equipped vehicle, characterized in that to perform the boosting through the amount charged in the high-pressure accumulator (60).
KR1020070116733A 2007-11-15 2007-11-15 A brake pedal pressure variation reducing apparatus for a vehicle's abs KR100857351B1 (en)

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Publication number Priority date Publication date Assignee Title
CN107472224A (en) * 2016-06-08 2017-12-15 大陆泰密克汽车***（上海）有限公司 The Electro-hydraulic brake system of pedal sense during improvement abs braking

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KR100516557B1 (en) * 1996-03-29 2006-03-23 스미토모덴키고교가부시키가이샤 Brake Fluid Pressure Control Device
KR19980054759A (en) * 1996-12-27 1998-09-25 박병재 Hydraulic circuit of ABS unit with pedal repulsion reduction structure during ABS operation
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CN107472224A (en) * 2016-06-08 2017-12-15 大陆泰密克汽车***（上海）有限公司 The Electro-hydraulic brake system of pedal sense during improvement abs braking

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