KR200151421Y1 - Brake system preventing wheel locking and spinning for a large automobile - Google Patents

Brake system preventing wheel locking and spinning for a large automobile Download PDF

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Publication number
KR200151421Y1
KR200151421Y1 KR2019970017702U KR19970017702U KR200151421Y1 KR 200151421 Y1 KR200151421 Y1 KR 200151421Y1 KR 2019970017702 U KR2019970017702 U KR 2019970017702U KR 19970017702 U KR19970017702 U KR 19970017702U KR 200151421 Y1 KR200151421 Y1 KR 200151421Y1
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KR
South Korea
Prior art keywords
wheel
air
compressed air
brake system
supplied
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KR2019970017702U
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Korean (ko)
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KR19990004534U (en
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김종완
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정몽규
현대자동차주식회사
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Priority to KR2019970017702U priority Critical patent/KR200151421Y1/en
Publication of KR19990004534U publication Critical patent/KR19990004534U/en
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Publication of KR200151421Y1 publication Critical patent/KR200151421Y1/en

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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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/175—Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
    • 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
    • B60T13/24—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 gaseous
    • B60T13/26—Compressed-air systems
    • 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
    • B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
    • B60T2210/10—Detection or estimation of road conditions
    • B60T2210/12—Friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • B60Y2200/142—Heavy duty trucks
    • 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
    • B60Y2400/303—Speed sensors
    • B60Y2400/3032—Wheel speed 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
    • B60Y2400/81—Braking systems

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Regulating Braking Force (AREA)

Abstract

본 고안은 대형차량의 바퀴 잠김 및 스핀방지용 브레이크 시스템에 관한 것으로, 8*4와 같은 대형트럭의 브레이크 시스템에 바퀴 잠김 및 스핀방지용 브레이크 시스템을 적용함으로서 제동성능을 향상시킴과 더불어 빙판 길과 같은 마찰력이 불 균일한 노면 등에서 바퀴의 스핀이 방지되도록 하기 위하여 에어 브레이크 시스템에 바퀴 잠김 방지 및 바퀴스핀방지 기능을 부과하여 제동성능의 향상과 미끄러운 노면과 같이 마찰력이 불 균일한 노면에서 주행 안정성을 확보할 수 있게 한 것이다.The present invention relates to a brake system for wheel locking and spin prevention of a large vehicle. The brake system for wheel locking and spin prevention is applied to a brake system of a large truck such as 8 * 4 to improve braking performance and frictional force such as an ice road. In order to prevent the spin of the wheel on the uneven road surface, the wheel brake prevention and wheel spin prevention function is imposed on the air brake system to improve the braking performance and to ensure the driving stability on the uneven road surface such as slippery road surface. It was made possible.

Description

대형차량의 바퀴 잠김 및 스핀방지용 브레이크 시스템Brake system for wheel locking and spin prevention of large vehicles

본 고안은 대형차량의 바퀴 잠김 및 스핀방지용 브레이크 시스템에 관한 것으로, 보다 구체적으로는 8*4와 같은 대형트럭의 브레이크 시스템에 바퀴 잠김 및 스핀방지용 브레이크 시스템을 적용함으로써 제동성능을 향상시킴과 더불어 빙판길과 같은 마찰력이 불 균일한 노면 등에서 바위의 스핀이 방지되도록 한 대형차량의 바퀴 잠김 및 스핀방지용 브레이크 시스템에 관한 것이다.The present invention relates to a brake system for wheel locking and spin prevention of a large vehicle. More specifically, the brake system for wheel locking and spin prevention is applied to a brake system of a large truck such as 8 * 4 to improve braking performance and ice sheet. The present invention relates to a wheel locking and spin preventing brake system of a large vehicle, which prevents the spin of rocks on roads with uneven friction such as roads.

일반적으로, 자동차의 바퀴 잠김 방지시스템은 전자에어에 의하여 브레이크를 작동시킬 때 바퀴가 잠기지 않게 하여 자동차의 제동성능을 향상시키는 장치로서, 즉, 자동차 주행중 급브레이크를 작동시키는 순간 바퀴가 회전되지 않고 잠기에 되면 바퀴와 노면사이의 마찰력이 상실되어 제동거리가 증가되고 직진성이 상실되는 문제점이 발생되기 때문에 이를 방지하기 위하여 급브레이크 작동시 노면과 바퀴사이의 마찰력이 상실되지 않고 자동차의 감속도와 동일하게 바퀴의 회전수가 감속될 수 있도록 하여 자동차의 제동성능이 향상되게 하는 것이다.In general, the wheel locking system of the vehicle is a device that improves the braking performance of the vehicle by preventing the wheels from being locked when the brake is operated by the electronic air, that is, the wheels are locked without turning at the moment of operating the sudden brake while driving the vehicle. In this case, the frictional force between the wheel and the road surface is lost, which increases the braking distance and the loss of straightness. The rotational speed of the vehicle can be reduced to improve the braking performance of the vehicle.

또한, 바퀴스핀방지의 시스템은 자동차가 빙판 길과 같이 노면의 마찰력이 균일하지 않는 곳을 주행할 때 각 바퀴와 노면 사이의 마찰력 편차로 인하여 한쪽 바퀴의 회전수가 급증되는 스핀현상을 방지하기 위하여 스핀현상이 발생되는 바퀴의 제동장치를 제어하여 스핀현상이 발생되지 않도록 하므로 자동차의 직진성과 주행안전성을 확보할 수 있도록 한 것이다.In addition, the wheel spin prevention system spins to prevent a spin phenomenon in which the number of revolutions of a wheel increases rapidly due to the frictional force difference between each wheel and the road surface when the vehicle travels in a place where the frictional force of the road is not uniform such as an ice road By controlling the braking device of the wheel that causes the phenomenon to prevent the phenomenon of spin is to ensure the straightness and driving safety of the car.

이와 같은 바퀴 잠김 및 스핀방지 시스템이 적용되는 소형의 차량에서는 브레이크 장치의 전 계통이 유압에 의하여 작동되므로 그 설치가 용이하고 응답성이 우수하여 기대하는 효과를 얻을 수가 있다.In the compact vehicle to which the wheel locking and spin prevention system is applied, the entire system of the brake system is operated by hydraulic pressure, so that the installation is easy and the response is excellent, thereby achieving the expected effect.

그런, 8*4 같은 대형트럭이나 트레일러 등의 브레이크장치는 브레이크 계통의 대부분이 압축공기에 의하여 작동되므로 소형차량에 적용되는 기술에 의하여는 그 설치가 용이하지 못할 뿐만 아니라 응답성 등에 문제가 있어 적용되지 못하고 있다.Such brake devices such as 8 * 4 heavy trucks or trailers are operated by compressed air because most of the brake systems are operated by compressed air. I can't.

그러므로, 제동성능 및 자동차의 주행 안전성이 만족할만한 수준에 도달하지 못하고 있는 것이었다.Therefore, the braking performance and the driving safety of the vehicle did not reach a satisfactory level.

본 고안은 상기와 같은 문제점을 고려하여 이루어진 것으로, 그 목적은 8*4의 에어식 브레이크 시스템에 바퀴 잠김 방지 및 바퀴스핀방지 시스템을 적용하므로서 바퀴 잠김 및 스핀방지 기능을 갖도록 하는 대형차량의 바퀴 잠김 방지 및 스핀방지용 브레이크 시스템을 제공함에 있다.The present invention has been made in consideration of the above problems, and its purpose is to lock the wheels of a large vehicle having a wheel locking and spin prevention function by applying a wheel locking prevention and wheel spin prevention system to an 8 * 4 air brake system. The present invention provides a brake system for preventing and spinning.

이러한 목적을 달성하기 위한 본 고안은 8*4 차량에 적용되고 있는 에어 브레이크시스템에 바퀴 잠김 및 바퀴스핀방지 기능을 부과함으로서 제동력의 향상은 물론이고, 출발, 가속시 또는 선회시 바퀴의 스핀을 방지하여 차량의 안정성을 향상시킬 수 있도록 한 것이다.In order to achieve this purpose, the present invention imposes wheel locking and wheel spin prevention functions on the air brake system applied to 8 * 4 vehicles to improve the braking force and to prevent the spin of the wheel when starting, accelerating or turning. To improve the stability of the vehicle.

제1도는 본 고안에 따른 브레이크 시스템을 보인 계략도.1 is a schematic view showing a brake system according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : ECU 21∼24 : 프레셔밸브10: ECU 21-24: Pressure valve

30 : 솔레노이드밸브 41∼44 : 릴레이밸브30: solenoid valve 41 to 44: relay valve

50 : 더불체크밸브 B : 브레이크 페달50: the check valve B: brake pedal

C1∼C8 : 에어챔버 S1∼S4 : 스피드 센서C1 to C8: Air chamber S1 to S4: Speed sensor

T : 에어탱크 W1∼W8 : 바퀴T: Air tank W1 to W8: Wheel

이하 첨부된 예시도에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail with reference to the accompanying drawings.

제1도는 본 고안에 따른 브레이크 시스템을 보인 계략도로서, 본 고안에 따른 대형트럭의 바퀴잠김 및 스핀방지 브레이크 시스템은 자동차 제동시 바퀴의 미끄러짐을 방지함과 더불어 빙판 길과 같이 마찰력이 불 균일한 노면에서 바퀴의 스핀을 방지할 수 있도록 한 것으로, 즉, 제1도에 도시된 바와 같이 전륜 1축과 후륜 1축의 좌, 우측 바퀴(W1,W3,W6,W8)들에 각각 구비되는 4개의 스피드 센서(S1∼S4)와, 상기 스피드 센서(S1∼S4)들로부터 속도신호를 입력받아 프레셔밸브(21∼24)들과 솔레노이드밸브(30)를 제어하는 ECU(10)와; 브레이크 페달(B)의 압력신호에 의하여 개방되면서 에어탱크(T)의 압축공기를 각기 전륜과 후륜의 브레이크 에어라인에 공급되게 하는 전, 후륜 릴레이밸브(41,42)들과; 상기 전륜 릴레이밸브(41)를 통하여 압축공기를 공급받음과 더불어 ECU(10)에 의하여 제어되면서 전륜의 1축과 2축에 각각 구비된 에어챔버(C1∼C4)들이 동작되게 압축공기를 공급하는 전륜 좌, 우측 프레셔밸브(21,22)들과; 상기 후륜 릴레이밸브(42)를 통하여 압축공기를 공급받음과 더불어 ECU(10)에 의하여 제어되면서 후륜의 1축과 2축에 각각 구비된 에어챔버(C5∼C8)들이 동작되게 압축공기를 공급하는 후륜 좌, 우측 프레셔밸브(23,24)들과; 상기 후륜 릴레이(42)와 후륜 좌, 우측 프레셔밸브(23,24)들 사이에 구비되면서 ECU(10)에 의하여 제어되어 개폐되는 솔레노이드밸브(30)를 통하여 공급되는 에어탱크(T)의 압축공기가 상기 후륜 좌, 우측 프레셔밸브(23, 4)들로만 공급되게 하는 더블체크밸브(50)와; 상기 후륜 좌, 우측 프레셔밸브(23,24)들과 후륜 1축의 좌, 우측의 에어챔버(C5∼C7)들 사이에 구비되면서 상기 후륜 좌, 우측 프레셔밸브(23,24)들을 통하여 압력신호를 입력받아 에어탱크(T)의 압축공기가 상기 후륜 1축의 좌, 우측 에어챔버(C5∼C7)들에 공급되게 구비된 후륜 1축 좌, 우측 릴레이밸브(43,44)들로 구성된 것이다.1 is a schematic view showing a brake system according to the present invention, the wheel locking and anti-spin brake system of a large truck according to the present invention prevents the sliding of the wheel during braking of the vehicle and the frictional force is uneven, such as ice road In order to prevent the spin of the wheel on the road surface, that is, as shown in FIG. 1, four left and right wheels (W1, W3, W6, W8) of each of the front and rear axle 1 axis An ECU 10 for controlling the pressure valves 21 to 24 and the solenoid valve 30 by receiving a speed signal from the speed sensors S1 to S4 and the speed sensors S1 to S4; Front and rear relay valves 41 and 42 which open by the pressure signal of the brake pedal B and supply compressed air of the air tank T to the brake air lines of the front wheel and the rear wheel, respectively; Compressed air is supplied through the front wheel relay valve 41 and controlled by the ECU 10 to supply compressed air to operate the air chambers C1 to C4 provided on one and two axes of the front wheel, respectively. Front wheel left and right pressure valves 21 and 22; Compressed air is supplied through the rear wheel relay valve 42 and controlled by the ECU 10 to supply compressed air to operate the air chambers C5 to C8 provided on one and two axes of the rear wheel, respectively. Rear wheel left and right pressure valves 23 and 24; Compressed air of the air tank (T) supplied through the solenoid valve 30 which is provided between the rear wheel relay 42 and the rear wheel left and right pressure valves (23, 24) and controlled and controlled by the ECU (10) A double check valve 50 for supplying only the rear wheel left and right pressure valves 23 and 4; Pressure signals are provided through the rear left and right pressure valves 23 and 24 while being provided between the rear left and right pressure valves 23 and 24 and the left and right air chambers C5 to C7 of the rear one axis. Compressed air of the air tank (T) receives the input is composed of the rear wheel 1 axis left, right relay valves 43 and 44 provided to be supplied to the left and right air chambers (C5 ~ C7) of the rear wheel 1 axis.

이하 본 고안의 작동상태에 대하여 상세히 설명하면 다음과 같다.Hereinafter will be described in detail with respect to the operating state of the present invention.

상기한 바와같이 된 본 고안에 따른 대형트럭의 바퀴 잠김 및 스핀방지 브레이크 시스템은 상기 트럭이 주행 중 브레이크 페달(B)을 조작하면 상기 브레이크 페달(B)의 조작에 의하여 전륜 릴레이밸브(41)와 후륜 릴레이밸브(42)가 개방되므로 에어탱크(T)의 압축공기가 전륜 및 후륜의 에어라인에 공급되게 되고, 이때 ECU(10)는 전륜 1축과 후륜 2축의 양 바퀴(W1,W3,W6,W8)들에 구비되어 있는 스피드 센서(S1∼S4)들을 통하여 각 바퀴(W1,W3,W6,W8)들의 회전수를 감지하고 자동차의 속도와 비교하여 전륜 좌, 우측 프레셔벨브(21,22)들과 후륜 좌, 우측 프레셔밸브(23,24)들을 제어하여 각 바퀴(W1∼W8)들의 에어챔버(C1∼C8)들에 공급되는 압축 공기의 흐름을 제어하여 바퀴(W1∼W8)들의 잠김이 발생되지 않게 한다. 이때 후륜 1축 좌, 우측 릴레이밸브(43,44)들은 후륜 1축 브레이크의 응답성을 향상시키기 위하여 후륜 좌, 우측 프레셔밸브(23,24)들을 통하여 공급되는 압축공기를 압력신호로 입력받아 에어탱크(T)의 압축공기가 후륜 1축의 에어챔버(C5,C7)들로 직접 공급되게 한다.The wheel locking and anti-spin brake system of a large truck according to the present invention as described above is operated by the brake pedal (B) when the truck operates the brake pedal (B) and the front wheel relay valve (41) and Since the rear wheel relay valve 42 is opened, the compressed air of the air tank T is supplied to the air lines of the front wheel and the rear wheel, and at this time, the ECU 10 receives the two wheels W1, W3, and W6 of the front wheel and the rear wheel. The number of wheels W1, W3, W6, and W8 is sensed through the speed sensors S1 to S4 provided in the W8 and the front wheel left and right pressure valves 21 and 22 are compared with the speed of the vehicle. ) And rear wheel left and right pressure valves 23 and 24 to control the flow of compressed air supplied to the air chambers C1 to C8 of the respective wheels W1 to W8 to control the flow of the compressed air to the wheels W1 to W8. Prevents locks from occurring At this time, the rear one-axis left and right relay valves 43 and 44 receive the compressed air supplied through the rear left and right pressure valves 23 and 24 as pressure signals to improve the response of the rear one-axis brake. The compressed air of the tank T is directly supplied to the air chambers C5 and C7 of the rear axle.

그리고, 자동차가 주행 중 노면의 마찰력이 불 균일한 빙판 길을 주행시 ECU(10)는 후륜 2축의 양 바퀴(W6,W8)들에 구비된 스피드 센서(S3,S4)들을 통하여 입력되는 양 바퀴(S6,W8)들의 회전수를 감지하여 양 바퀴(W6,W8)들의 회전수 편차가 발생되면, 솔레노이드밸브(30)와 회전수가 증가된 측의 후륜 프레셔밸브를 제어하여 에어탱크(T)의 압축공기가 상기 솔레노이드밸브(30)와 더블체크밸브(50)를 통하여 상기 프레셔밸브를 거쳐 회전수가 증가된 바퀴의 에어챔버에 압축공기를 공급하여 제동력을 발생시켜 양 바퀴(W6,W8)들의 회전수가 동일하게 하여 한 쪽 바퀴의 스핀으로 인한 직진성의 상실 등을 방지한다.In addition, when the vehicle is driving on an ice road where frictional force of the road surface is uneven during driving, the ECU 10 may input both wheels input through the speed sensors S3 and S4 provided on both wheels W6 and W8 of the rear two-axis. When the rotation speed of both wheels W6 and W8 is detected by detecting the rotation speed of S6 and W8, the solenoid valve 30 and the rear wheel pressure valve on the side where the rotation speed is increased to control the compression of the air tank T Air is supplied via the solenoid valve 30 and the double check valve 50 through the pressure valve to the air chamber of the wheel where the rotation speed is increased to generate a braking force, thereby causing the rotation speed of both wheels W6 and W8. The same prevents loss of straightness due to spin of one wheel.

이상에서 상세히 설명한 바와 같이 본 고안은 대형트럭에 적용되는 에어 브레이크 시스템에 바퀴감기 및 스핀방지 시스템을 적용함으로서 이와 같은 시스템에서 기대되는 효과를 충분히 가지게 되는 것이다.As described in detail above, the present invention has sufficient effects expected in such a system by applying a wheel winding and a spin prevention system to an air brake system applied to a large truck.

즉, 대형트럭에 있어서도 제동성의 향상은 물론이고 미끄러운 노면과 같이 마찰력이 불 균일한 노면에서 주행 안전성이 효과를 가지게 되는 것이다.That is, even in a large truck, the driving safety is effective on a road surface having a non-uniform frictional force such as a slippery road surface as well as an improved braking property.

Claims (1)

대형트럭 중 8*4의 차량에 적용되는 브레이크 시스템에 있어서; 상기 브레이크 시스템은 전륜, 후륜의 바퀴(W1,W3,W6,W8)들에 각각 구비되는 스피드 센서(S1∼S4)들과, 상기 스피드 센서(S1∼S4)들로부터 속도신호를 입력받아 바퀴(W1∼W8)들의 미끄럼과 스핀이 방지되게 하는 ECU(10)와, 브레이크 페달(B)의 압력신호에 의하여 동작되면서 에어탱크(T)의 압축공기가 전, 후륜의 브레이크 에어라인에 공급되게 하는 전, 후륜 릴레이밸브(41,42)들과, 상기 전륜 릴레이밸브(41)를 통하여 압축공기를 공급받음과 더불어 ECU(10)에 의하여 제어되면서 전륜의 각 에어챔버(C1∼C4)들이 동작되게 압축공기를 공급하는 전륜 좌, 우측 프레셔밸브(21,22)들과, 상기 후륜 릴레이밸브(42)를 통하여 압축공기를 공급받음과 더불어 ECU(10)에 의하여 제어되면서 후륜의 각 에어챔버(C5∼C8)들이 동작되게 압축공기를 공급하는 후륜 좌, 우측 프레셔밸브(23,24)들과, 상기 후륜 릴레이(42)와 후륜 좌, 우측 프레셔밸브(23,24) 사이에 구비되면서 ECU(10)에 의하여 제어되는 솔레노이드밸브(30)를 통하여 공급된 에어탱크(T)의 압축공기가 상기 후륜 좌, 우측 프레셔밸브(23,24)들 측으로만 공급되게 하는 더블체크밸브(50)와, 상기 후륜 좌, 우측 프레셔밸브(23,24)들과 후륜 1축의 좌, 우측 에어챔버(C5,C7)들 사이에 구비되면서 상기 후륜 좌, 우측 프레셔밸브(23,24)들에서 공급된 압축공기의 압력에 의하여 동작되어 에어탱크(T)의 압축공기를 상기 후륜 1축 좌, 우측 에어챔버(C5,C7)들에 공급되게 구비된 후륜 1축 좌, 우측 릴레이밸브(43,44)들로 구성된 대형차량의 바퀴 잠김 및 스핀방지용 브레이크 시스템.A brake system applied to a vehicle of 8 * 4 in a large truck; The brake system receives speed signals from the speed sensors S1 to S4 provided on the wheels W1, W3, W6, and W8 of the front wheel and the rear wheel, respectively, and receives the speed signal from the speed sensors S1 to S4. The ECU 10 which prevents slippage and spin of the W1 to W8 and the pressure signal of the brake pedal B are operated so that the compressed air of the air tank T is supplied to the brake air lines of the front and rear wheels. The front and rear wheel relay valves 41 and 42 and compressed air are supplied through the front wheel relay valve 41 and controlled by the ECU 10 to operate the respective air chambers C1 to C4 of the front wheel. Front wheel left and right pressure valves 21 and 22 for supplying compressed air and compressed air are supplied through the rear wheel relay valve 42 and controlled by the ECU 10 to control the respective air chambers C5 of the rear wheels. Rear left and right pressure valves 23 and 24 for supplying compressed air to operate the C-8 valves. And the compressed air of the air tank T supplied through the solenoid valve 30 controlled by the ECU 10 while being disposed between the rear wheel relay 42 and the rear wheel left and right pressure valves 23 and 24. Double check valve 50 to be supplied only to the rear left and right pressure valves 23 and 24, and the left and right air chambers of the rear left and right pressure valves 23 and 24 and the rear axle ( C5 and C7 are operated between the rear wheel left and right pressure valves 23 and 24 and are operated by the pressure of the compressed air supplied to the compressed air of the air tank T. Wheel locking and spin prevention brake system of a large vehicle composed of rear wheel 1-axis left and right relay valves (43, 44) provided to be supplied to the chambers (C5, C7).
KR2019970017702U 1997-07-04 1997-07-04 Brake system preventing wheel locking and spinning for a large automobile KR200151421Y1 (en)

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