KR970015313A - Brake system with antilock and traction control - Google Patents

Brake system with antilock and traction control Download PDF

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Publication number
KR970015313A
KR970015313A KR1019950030582A KR19950030582A KR970015313A KR 970015313 A KR970015313 A KR 970015313A KR 1019950030582 A KR1019950030582 A KR 1019950030582A KR 19950030582 A KR19950030582 A KR 19950030582A KR 970015313 A KR970015313 A KR 970015313A
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KR
South Korea
Prior art keywords
valve
brake
port
traction control
channel
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KR1019950030582A
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Korean (ko)
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KR0127553B1 (en
Inventor
김중배
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배순훈
대우전자 주식회사
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Publication of KR970015313A publication Critical patent/KR970015313A/en
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Publication of KR0127553B1 publication Critical patent/KR0127553B1/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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • B60T8/3635—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems switching between more than two connections, e.g. 3/2-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
    • B60T13/10—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
    • 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
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/329—Systems characterised by their speed sensor arrangements
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
    • 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)
  • Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Regulating Braking Force (AREA)

Abstract

2위치/3웨이 솔레노이드 밸브를 사용하여 앤티로크 기능을 구현한 앤티로크 및 트랙션 콘트롤 기능을 갖춘 후륜구동 차량의 브레이크 시스템을 제공한다. 브레이크 시스템의 각 채널에 앤티로크용 2위치/3웨이 솔레노이드 밸브가 설치되어 이 밴브를 ECU로부터의 밸브절환신호에 의해 절환시켜 앤티로크기능을 수행하고, 구동차륜이 연결된 채널에 상시 개방형 및 상시 폐쇄형으로 이루어진 2개의 2위치/2웨이 솔레노이드 밸브와 1개의 릴리프 밸브가 설치되어 이 밸브를 ECU로부터의 밸브절환신호에 의해 절환시켜 트랙션 콘트롤 기능을 수행한다.It provides a brake system for rear-wheel drive vehicles with anti-lock and traction control using a 2-position / 3-way solenoid valve. The antilock 2 position / 3 way solenoid valve is installed in each channel of the brake system to switch this van with the valve switching signal from the ECU to perform the anti lock function, and is always open and normally closed to the channel to which the drive wheel is connected. Two two-position, two-way solenoid valves and one relief valve of the type are installed and the valve is switched by the valve change signal from the ECU to perform the traction control function.

Description

앤티로크 및 트랙션 콘트롤 기능을 갖춘 브레이크 시스템Brake system with antilock and traction control

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (6)

각 차륜에 장착되는 브레이크 휠실린더, 브레이크 페달, 및 제1 및 제2의 별개의 브레이크 회로 출구를 갖는 브레이크 페달을 작동함에 의해 제동압력을 발생하는 마스터 실린더를 포함하며, 상기 제1브레이크 회로출구는 2개의 차륜에 장착된 상기 브레이크 휠실린더에 직접 연결되는 앤티로크 및 트랙션 콘트롤 기능을 갖는 브레이크 시스템에 있어서. 상기 브레이크 시스템은, 상기 마스터 실린더의 상기 제1의 브레이크 회로 출구를 전방좌측 차륜 및 전방우측 차륜에 각각 장착된 브레이크 휠실린더에 직접 연결하는 직통유로; 상기 마스터실린더의 상기 제2의 브레이크 회로 출구에 연결되는 브레이크 회로; 상기 브레이크 회로를 상기의 각각의 차륜에 장착된 상기 브레이크 휠실린더에 연결하는 하나의 채널; 상기 채널이 연결된 2개의 차륜에 설치되어 차륜의 속도를 감지하는 차륜속도센서; 그리고 상기 차룬속도센서로부터의 속도신호를 수신하고, 수신된 속도신호에 의거하여, 상기 브레이크 회로를 구성하는 앤티로크용 밸브수단과 트랙션 콘트롤용 밸브수단에 각각 포함된 다수의 솔레노이드 밸브에 밸브절환신호를 소정시간주기동안 출력하여, 상기 브레이크 휠실린더의 압력을 증가, 유지 또는 감소시켜 앤티로크 및 트랙션 콘트롤 기능이 수행되도록 하는 제어수단으로 구성되며, 상기 브레이크 회로는, 펌프와, 상기 펌프의 출구측에 제공되어 맥동현상을 감소시키기 위한 댐퍼와, 유체의 역류를 방지하기 위해 상기 펌프의 입구측 및 상기 댐퍼의 출구측에 각각 설치된 입구체크밸브 및 출구체크밸브와, 상기 출구체크밸브의 출구측에 설치되어 맥동을 억제하고 유량을 조절하기 위한 오리피스와, 그리고 상기 펌프의 입구측에 설치된 상기 입구체크밸브의 입구측에 설치되어 일시적으로 유체를 보유하는 어큐물레이터로 구성된 유압발생/보유수단; 제1, 제2 및 제3포트를 가지며 상기 제어수단으로부터 상기 밸브절환신호가 입력되지 않는 상태에서 유지되는 제1위치와, 상기 밸브절환신호가 입력되는 상태에서 유지되는 제2위치 사이를 절환하는 채널용 솔레노이드 밸브로 구성되며, 상기 채널용 솔레노이드 밸브의 상기 제1포트는 상기 마스터실린더의 상기 제2브레이크 회로 출구에 연결되며, 상기 채널용 솔레노이드 밸브의 상기 제2포트는 상기 채널에 할당된 2개의 차륜에 장착된 상기 브레이크 휠실린더에 연결되며, 상기 채널용 솔레노이드 밸브의 상기 제3푸트는 상기 어큐물레이터에 연결되는 앤티로크용 밸브수단; 그리고 제1 및 제2 포트를 가지며, 상기 제어수단으로부터 상기 밸브절환신호가 입력되지 않는 상태에서 유지되는 제1위치와, 상기 밸브절환신호가 입력되는 상태에서 유지되는 제2위치 사이를 절환하는 제1 및 제2트랙션 콘트롤 솔레노이드 밸브와, 상기 브레이크 휠실린더의 압력이 소정치 이상으로 초과하지 못하게 하기 위해 상기 제2트랙션 콘트롤 솔레노이드 밸브의 제1포트와 제2포트 사이에 연결된 릴리프 밸브로 구성되며, 상기 제1트랙션 콘트롤 솔레노이드 밸브의 제1포트는 상기 펌프의 입구측에 연결되며, 상기 제2트랙선 콘트롤 솔레노이드 밸브의 상기 제1포트는 상기 채널용 솔레노이드 밸브의 상기 제1포트와 상기 제2포트를 통하여 상기 채널에 할당된 2개의 차륜에 장착된 상기 브레이크 휠실린더에 연결되며, 상기 제1 및 제2트랙션 콘트롤 솔레노이드 밸브의 상기 제2프트는 서로 연결되어 상기 마스터 실린더의 상기 제2브레이크 회로 출구에 연결되는 트랙션 콘트롤용 밸브수단으로 구성되는 것을 특징으로 하는 브레이크 시스템.And a master cylinder for generating a braking pressure by operating a brake wheel cylinder mounted to each wheel, a brake pedal, and a brake pedal having first and second separate brake circuit outlets, wherein the first brake circuit exit includes: A brake system having an anti-lock and traction control function directly connected to the brake wheel cylinder mounted on two wheels. The brake system includes: a direct flow path connecting the first brake circuit outlet of the master cylinder to a brake wheel cylinder mounted to the front left wheel and the front right wheel, respectively; A brake circuit connected to the second brake circuit outlet of the master cylinder; One channel connecting the brake circuit to the brake wheel cylinders mounted to the respective wheels; A wheel speed sensor installed at two wheels to which the channel is connected to sense the speed of the wheel; And receiving a speed signal from the charun speed sensor, and switching valve signals to a plurality of solenoid valves included in the antilock valve means and the traction control valve means constituting the brake circuit, based on the received speed signal. And a control means for outputting a predetermined time period to increase, maintain or decrease the pressure of the brake wheel cylinder to perform an antilock and traction control function. The brake circuit includes a pump and an outlet side of the pump. A damper for reducing pulsation, an inlet check valve and an outlet check valve respectively installed at an inlet side of the pump and an outlet side of the damper to prevent backflow of the fluid, and an outlet side of the outlet check valve. An orifice for suppressing pulsation and adjusting the flow rate, and at the inlet side of the pump Hydraulic generation / holding means, which is installed at an inlet side of the inlet check valve and configured to accumulate fluid temporarily; Switching between the first position having a first, second and third ports and maintained in a state where the valve change signal is not input from the control means, and a second position maintained in a state where the valve change signal is input. A channel solenoid valve, wherein the first port of the channel solenoid valve is connected to the outlet of the second brake circuit of the master cylinder, and the second port of the channel solenoid valve is assigned to the channel. Anti-lock valve means connected to the brake wheel cylinder mounted to the two wheels, wherein the third foot of the channel solenoid valve is connected to the accumulator; And a first position having a first port and a second port, for switching between a first position maintained in a state where the valve change signal is not input from the control means and a second position maintained in a state where the valve change signal is input. A first and second traction control solenoid valve and a relief valve connected between the first and second ports of the second traction control solenoid valve to prevent the pressure of the brake wheel cylinder from exceeding a predetermined value. A first port of the first traction control solenoid valve is connected to the inlet side of the pump, and the first port of the second track control solenoid valve is the first port and the second port of the channel solenoid valve. Connected to the brake wheel cylinders mounted on the two wheels assigned to the channel via the first and second traction controls And the second shaft of the roll solenoid valve is composed of a traction control valve means connected to each other and connected to an outlet of the second brake circuit of the master cylinder. 제1항에 있어서, 상기 제2브레이크 회로 출구에 연결된 프로포셔닝 밸브와, 상기 앤티로크용 밸브수단을 구성하는 상기 채널용 솔레노이드 밸브와 상기 트랙션 콘트롤용 밸브수단을 구성하는 상기 제1 및 제2트랙션 콘트롤 솔레노이드 밸브의 상기 제1포트와 상기 제2포트 사이에 연결된 체크밸브를 추가로 포함하는 것을 특징으로 하는 브레이크 시스템.2. The apparatus of claim 1, further comprising: a proportioning valve connected to the second brake circuit outlet, the channel solenoid valve constituting the antilock valve means, and the traction control valve means. And a check valve connected between the first port and the second port of the traction control solenoid valve. 제1항에 있어서, 상기 제어수단은 펄스폭변조신호를 상기 채널용 솔레노이드 밸브와 상기 제1 및 제2트랙션 콘트롤 솔레노이드 밸브에 출력하며, 상기 펄스폭변조신호에 의해 상기 브레이크 휠실린더의 압력이 증가, 감소 또는 유지되는 것을 특징으로 하는 브레이크 시스템.According to claim 1, wherein the control means outputs a pulse width modulation signal to the channel solenoid valve and the first and second traction control solenoid valve, the pressure of the brake wheel cylinder is increased by the pulse width modulation signal Brake system, characterized in that it is reduced or maintained. 각 차륜에 장착되는 브레이크 훨실린더, 브레이크 페달, 및 제1 및 제2의 별개의 브레이크 회로 출구를 갖는 브레이크 페달을 작동함에 의해 제동압력을 발생하는 마스터 실린더를 포함하며, 상기 제1브레이크 회로출구는 2개의 차륜에 장착된 상기 브레이크 휠실린더에 직접 연결되는 앤티로크 및 트랙션 콘트롤 기능을 갖는 브레이크 시스템에 있어서, 상기 브레이크 시스템은, 상기 마스터 실린더의 상기 제1의 브레이크 회로 출구를 전방좌측 차륜 및 전방우측 차륜에 각각 장착된 브레이크 휠실린더에 직집 연결하는 직통유로; 상기 마스터실린더의 상기 제2의 브레이크 회로 출구에 연결되는 브레이크 회로; 상기 브레이크 회로를 상기의 각각의 차륜에 장착된 상기 브레이크 휠실린더에 연결하는 제1 및 제2채널; 상기 제1 및 제2채널이 연결된 2개의 차륜에 각각 설치되어 차륜의 속도를 감지하는 차륜속도센서; 그리고 상기 차륜속도센서로부터의 속도신호를 수신하고, 수신된 속도신호에 의거하여, 상기 브레이크 회로를 구성하는 앤티로크용 밸브수단과 트랙션 콘트롤용 밸브수단에 각각 포함된 다수의 솔레노이드 밸브에 밸브절환신호를 소정시간주기동안 출력하여, 상기 브레이크 휠실린더의 압력을 증가, 유지 또는 감소시켜 앤티로크 및 트랙션 콘트롤 기능이 수행되도록 하는 제어수단으로 구성되며, 상기 브레이크 회로는, 펌프와, 상기 펌프의 출구측에 제공되어 맥동현상을 감소시키기 위한 댐퍼와, 유체의 역류를 방지하기 위해 상기 펌프의 입구측 및 상기 댐퍼의 출구측에 각각 설치된 입구체크밸브및 출구체크밸브와, 상기 출구체크밸브의 출구측에 설치되어 맥동을 억제하고 유량을 조절하기 위한 오리피스와, 그리고 상기 펌프의 입구측에 설치된 상기 입구체크밸브의 입구측에 설치되어 일시적으로 유체를 보유하는 어큐물레이터로 구성된 유압발생/보유수단; 각각 제1, 제2 및 제3포트를 가지며 상기 제어수단으로부터 상기 밸브절환신호가 입력되지 않는 상태에서 유지되는 제1위치와, 상기 밸브절환신호가 입력되는 상태에서 유지되는 제2위치 사이를 절환하는 제1 및 제2채널용 솔레노이드 밸브로 구성되며, 상기 제1 및 제2채널용 솔레노이드 밸브의 상기 제1포트는 서로 연결되어 상기 마스터 실린더의 상기 제2브레이크 회로 출구에 연결되며, 상기제1 및 제2채널용 솔레노이드 밸브의 상기 제2포트는 상기 제1 및 제2채널에 할당된 2개의 차륜에 장착된 상기브레이크 휠실린더에 연결되며, 상기 제1 및 제2채널용 솔레노이드 밸브의 상기 제3포트는 서로 연결되어 상기 어큐물레이터에 연결되는 앤티로크용 밸브수단; 그리고 제1 및 제2포트를 가지며, 상기 제어수단으로부터 상기밸브절환신호가 입력되지 않는 상태에서 유지되는 제1위치와, 상기 밸브절환신호가 입력되는 상태에서 유지되는 제2위치 사이를 절환하는 제1 및 제2트랙션 콘트롤 솔레노이드 밸브와, 상기 브레이크 휠실린더의 압력이 소정치 이상으로 초과하지 못하게 하기 위해 상기 제2트랙션 콘트롤 솔레노이드 밸브의 제1포트와 제2포트사이에 연결된 릴리프 밸브로 구성되며, 상기 제1트랙션 콘트롤 솔레노이드 밸브의 제1포트는 상기 펌프의 입구측에 연결되며, 상기 제2트랙션 콘트롤 솔레노이드 밸브의 상기 제1포트는 상기 채널용 솔레노이드 밸브의 상기 제1포트와 상기 제2포트를 통하여 상기 채널에 할당된 2개의 차륜에 장착된 상기 브레이크 휠실린더에 연결되며, 상기 제1 및 제2트랙션 콘트롤 솔레노이드 밸브의 상기 제2포트는 서로 연결되어 상기 마스터 실린더의 상기 제2브레이크 회로 출구에 연결되는 트랙션 콘트롤용 밸브수단으로 구성되는 것을 특징으로 하는 브레이크 시스템.And a master cylinder for generating braking pressure by operating a brake mulch cylinder mounted on each wheel, a brake pedal, and a brake pedal having first and second separate brake circuit outlets, wherein the first brake circuit outlet A brake system having an antilock and traction control function connected directly to the brake wheel cylinders mounted on two wheels, wherein the brake system is configured to move the first brake circuit exit of the master cylinder to the front left wheel and the front right side. A direct flow path connected directly to the brake wheel cylinders mounted on the wheels, respectively; A brake circuit connected to the second brake circuit outlet of the master cylinder; First and second channels connecting the brake circuit to the brake wheel cylinders mounted to the respective wheels; A wheel speed sensor installed at two wheels to which the first and second channels are connected, respectively, to detect a speed of the wheel; And receiving a speed signal from the wheel speed sensor and, based on the received speed signal, a valve switching signal to a plurality of solenoid valves included in the antilock valve means and the traction control valve means constituting the brake circuit. And a control means for outputting a predetermined time period to increase, maintain or decrease the pressure of the brake wheel cylinder to perform an antilock and traction control function. The brake circuit includes a pump and an outlet side of the pump. A damper for reducing pulsation, an inlet check valve and an outlet check valve respectively installed at an inlet side of the pump and an outlet side of the damper to prevent backflow of the fluid, and an outlet side of the outlet check valve. An orifice for suppressing pulsation and adjusting the flow rate, and at the inlet side of the pump Oil pressure generating / holding means consisting of the accumulator for holding temporarily the fluid is installed on the inlet side of the inlet check valve; Switching between a first position having first, second and third ports, respectively, maintained in a state in which the valve change signal is not input from the control means, and a second position maintained in a state in which the valve change signal is input; And a first and second channel solenoid valve, wherein the first ports of the first and second channel solenoid valves are connected to each other, and are connected to the second brake circuit outlet of the master cylinder. And the second port of the solenoid valve for the second channel is connected to the brake wheel cylinder mounted to the two wheels assigned to the first and the second channel, and the first port of the solenoid valve for the first and second channel. Three port is connected to each other anti-lock valve means connected to the accumulator; And a first position having a first port and a second port, for switching between a first position maintained in a state where the valve change signal is not input from the control means and a second position maintained in a state where the valve change signal is input. A first and second traction control solenoid valve and a relief valve connected between the first and second ports of the second traction control solenoid valve to prevent the pressure of the brake wheel cylinder from exceeding a predetermined value. A first port of the first traction control solenoid valve is connected to the inlet side of the pump, and the first port of the second traction control solenoid valve connects the first port and the second port of the channel solenoid valve. Connected to the brake wheel cylinders mounted on the two wheels assigned to the channel via the first and second traction controls. And the second port of the solenoid valve is composed of traction control valve means connected to each other and connected to the second brake circuit outlet of the master cylinder. 제4항에 있어서, 상기 제2브레이크 회로 출구에 연결된 프로포셔닝 밸브와, 상기 앤티로크용 밸브수단을 구성하는 상기 제1 및 제2채널용 솔레노이드 밸브와 상기 트랙션 콘트롤용 밸브수단을 구성하는 상기 제1 및 제2트랙션 콘트롤 솔레노이드 밸브의 상기 제1포트와 상기 제2포트 사이에 연결된 체크밸브를 추가로 포함하는 것을 특징으로 하는 브레이크 시스템.5. The apparatus of claim 4, further comprising: a proportioning valve connected to the outlet of the second brake circuit, the first and second channel solenoid valves constituting the antilock valve means, and the traction control valve means. And a check valve connected between the first port and the second port of the first and second traction control solenoid valves. 제4항에 있어서. 상기 제어수단은 펄스폭변조신호를 상기 제1 및 제2채널용 솔레노이드 밸브와 상기 제1및 제2트랙션 콘트롤 솔레노이드 밸브에 출력하며, 상기 펄스폭변조신호에 의해 상기 브레이크 휠실린더의 압력이 증가, 감소 또는 유지되는 것을 특징으로 하는 브레이크 시스템.The method of claim 4. The control means outputs a pulse width modulation signal to the first and second channel solenoid valves and the first and second traction control solenoid valves, and the pressure of the brake wheel cylinder is increased by the pulse width modulation signal. Brake system, characterized in that reduced or maintained. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application. 제1도는 본 발명의 제1실시예에 따른 앤티로크 및 트랙션 콘트롤 기능을 갖춘 후륜구동형 차량용의 1채널브레이크 시스템의 유입회로도이고;1 is an inflow circuit diagram of a one-channel brake system for a rear wheel drive vehicle with an anti-lock and traction control function according to a first embodiment of the present invention; 제3A도는 2위치/2웨이 솔레노이드 밸브를 갖춘 종래의 앤티로크 브레이크 시스템의 개략 유압회로도이고; 그리고 제3B도는 3위치/3웨이 솔레노이드 밸브를 갖춘 종래의 앤티로크 브레이크 시스템의 개략 유압회로도이다.3A is a schematic hydraulic circuit diagram of a conventional anti-lock brake system with a 2-position / 2-way solenoid valve; And FIG. 3B is a schematic hydraulic circuit diagram of a conventional anti-lock brake system with a three position / 3 way solenoid valve.
KR1019950030582A 1995-09-19 1995-09-19 The brake system with a.b.s and t.c.s. KR0127553B1 (en)

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KR0127553B1 KR0127553B1 (en) 1998-04-06

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