KR20080088059A - Vehicle Braking System - Google Patents
Vehicle Braking System Download PDFInfo
- Publication number
- KR20080088059A KR20080088059A KR1020070030411A KR20070030411A KR20080088059A KR 20080088059 A KR20080088059 A KR 20080088059A KR 1020070030411 A KR1020070030411 A KR 1020070030411A KR 20070030411 A KR20070030411 A KR 20070030411A KR 20080088059 A KR20080088059 A KR 20080088059A
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- KR
- South Korea
- Prior art keywords
- hydraulic
- braking device
- master cylinder
- vehicle
- brake
- Prior art date
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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
- 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
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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
- 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
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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
- 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
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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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
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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
- B60T8/40—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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
본 발명은 차량의 제동장치에 관한 것으로서, 특히 유압에 의한 제동장치와 전기에 의한 제동장치를 복합적으로 구현한 차량용 복합제동장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for a vehicle, and more particularly to a compound braking device for a vehicle in which a braking device based on hydraulic pressure and an electric braking device are implemented in combination.
본 발명에 의한 차량용 복합제동장치는 리저버에 저장되어 있는 브레이크액을 이용하여 액압(掖壓)을 형성하는 마스터실린더와, 상기 마스터실린더의 입력단과 연결되어 운전자의 답력(踏力)을 증폭시켜 상기 마스터실린더로 전달하는 브레이크페달과, 상기 브레이크페달에 설치되어 상기 브레이크페달의 변위를 측정하는 변위센서와, 차량의 전륜에 설치되어 액압(掖壓)에 의해 제동력을 발생시키는 유압식 제동장치와, 상기 마스터실린더와 상기 유압식 제동장치 사이에 설치되어 상기 유압식 제동장치에 공급되는 액압(掖壓)을 조절하는 유압조절장치와, 차량의 후륜에 설치되어 전기모터에 의해 제동력을 발생시키는 전기식 제동장치와, 상기 전기식 제동장치를 제어하는 제1제어유닛과, 상기 유압조절장치를 제어하고 상기 제1제어유닛과 통신가능한 제2제어유닛으로 이루어진다.The composite brake system for a vehicle according to the present invention is connected to an input terminal of the master cylinder and a master cylinder for forming a hydraulic pressure by using a brake fluid stored in a reservoir, thereby amplifying the driver's power and driving the master. A brake pedal for transmitting to a cylinder, a displacement sensor mounted on the brake pedal to measure the displacement of the brake pedal, a hydraulic brake installed on the front wheel of the vehicle to generate a braking force by hydraulic pressure, and the master A hydraulic control device installed between the cylinder and the hydraulic brake device to adjust the hydraulic pressure supplied to the hydraulic brake device, and an electric brake device installed on the rear wheel of the vehicle to generate a braking force by the electric motor; A first control unit controlling an electric braking device, and a communicator controlling the hydraulic control device and communicating with the first control unit It consists of a possible second control unit.
Description
도 1은 본 발명에 따른 차량용 복합제동장치의 구성도이다.1 is a block diagram of a composite brake system for a vehicle according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
1; 마스터실린더 2; 브레이크페달One; Master cylinder 2; Brake pedal
3; 유압식 제동장치 4; 유압조절장치3; Hydraulic braking 4; Hydraulic control device
5; 전기식 제동장치 6; 제1제어유닛5; Electric brake 6; First control unit
7; 제2제어유닛 11; 리저버7; Second control unit 11; Reservoir
21; 변위센서 41; 유압원21; Displacement sensor 41; Hydraulic pressure
42; 유입밸브 43; 유출밸브42; Inlet valve 43; Outlet valve
44; 차단밸브 45; 페달감 형성장치44; Shut-off valve 45; Pedal Feel Forming Device
411; 전기모터 412; 펌프411; Electric motor 412; Pump
413; 어큐뮬레이터413; Accumulator
본 발명은 차량의 제동장치에 관한 것으로서, 특히 유압에 의한 제동장치와 전기에 의한 제동장치를 복합적으로 구현한 차량용 복합제동장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for a vehicle, and more particularly to a compound braking device for a vehicle in which a braking device based on hydraulic pressure and an electric braking device are implemented in combination.
일반적으로 차량의 제동을 위한 종래의 제동장치는 주로 유압(油壓)을 이용해 왔다. 운전자가 차량의 운전석에 설치된 브레이크페달을 밟게 되면 지렛대의 원리에 의해 운전자의 페달 답력(踏力)을 증폭시켜 브레이크 부스터에 전달하게 된다. 브레이크 부스터는 운전자의 페달 답력(踏力)을 일정 배율로 증폭시켜 액압(掖壓)을 형성하는 마스터실린더로 전달하는 역할을 수행하는 것으로, 통상적으로 진공과 대기와의 차압을 이용한 진공배력식 브레이크 부스터가 사용된다. 마스터실린더는 리저버 탱크로부터 브레이크액을 공급받아 브레이크 부스터에서 전달된 힘을 압력의 단위인 액압(掖壓)으로 변환시켜서 차량의 휠(Wheel)에 장착된 휠실린더에 배관을 통해 공급시켜 준다. 휠실린더에 공급된 액압은 휠실린더 내부에 설치된 피스톤에 작용하여 다시 힘의 단위로 변환되며, 피스톤에 연결된 마찰재를 휠과 함께 회전하는 디스크나 드럼에 접촉시킴으로써 마찰력을 발생시켜 차량을 감속시키거나 정지시키는 역할을 한다.In general, a conventional braking device for braking a vehicle mainly uses hydraulic pressure. When the driver steps on the brake pedal installed in the driver's seat, the driver's pedal response is amplified and transmitted to the brake booster based on the lever principle. The brake booster serves to amplify the driver's pedal force at a constant magnification and transmit it to a master cylinder that forms a hydraulic pressure. A vacuum boost brake booster using a differential pressure between the vacuum and the atmosphere is generally used. Is used. The master cylinder receives brake fluid from the reservoir tank and converts the force transmitted from the brake booster to hydraulic pressure, which is a unit of pressure, and supplies the pipe cylinder to the wheel cylinder mounted on the wheel of the vehicle. The hydraulic pressure supplied to the wheel cylinder acts on the piston installed inside the wheel cylinder and converts it back into a unit of force.The friction material connected to the piston contacts the disk or drum that rotates with the wheel to generate friction force to slow down or stop the vehicle. It plays a role.
이와 같은 유압을 이용한 제동장치는 제동장치의 고장시에도 차량의 안전을 확보하기 위해 독립적인 두 개의 유압회로로 구성되는 것이 일반적이며, 이를 위해 액압을 형성하는 마스터실린더가 두 개의 액압발생챔버로 이루어져 있다. 따라서, 첫번째 회로는 차량의 오른쪽 전륜과 왼쪽 후륜에 각각 장착된 휠실린더가 구비된 유압식 제동장치에 연결되며, 두번째 회로는 차량의 왼쪽 전륜과 오른쪽 후륜에 각각 장착된 휠실린더가 구비된 유압식 제동장치에 연결된다. 다른 방법으로는 첫번째 회로가 차량의 전륜 측에 연결되며, 두번째 회로가 차량의 후륜 측에 연결되기도 한다.Such a brake system using hydraulic pressure is generally composed of two independent hydraulic circuits to ensure the safety of the vehicle even in the event of a failure of the brake system. For this purpose, a master cylinder for forming a hydraulic pressure consists of two hydraulic pressure generating chambers. have. Thus, the first circuit is connected to a hydraulic brake system with wheel cylinders mounted on the right front wheel and the left rear wheel of the vehicle, and the second circuit is a hydraulic brake system with wheel cylinders mounted on the left front wheel and the right rear wheel of the vehicle, respectively. Is connected to. Alternatively, the first circuit may be connected to the front wheel side of the vehicle and the second circuit may be connected to the rear wheel side of the vehicle.
근래에는 차량의 안전성 확보 및 차량 성능의 최적화를 위하여 차륜 잠김 방지장치(ABS; Anti-lock Brake System), 미끌림 제어장치(TCS; Traction Control System) 및 차량 자세 제어장치(ESC; Electronic Stability Control) 등이 개발되어 브레이크 시스템에 적용되고 있다. Recently, in order to secure vehicle safety and optimize vehicle performance, an anti-lock brake system (ABS), a traction control system (TCS) and an electronic stability control (ESC) Has been developed and applied to brake systems.
이러한 부가적인 기능을 구현하기 위하여는 다수의 솔레노이드 타입의 유압제어밸브와 유압펌프가 구비되어야 하고, 또한 운전자의 제동의지나 차량의 운전상태를 파악하기 위하여 각종 센서들이 필요하게 되었으며, 각종 센서로부터 수집된 정보를 바탕으로 정확한 제어를 위해 전자제어수단이 요구된다.In order to implement these additional functions, a number of solenoid type hydraulic control valves and hydraulic pumps should be provided, and various sensors are needed to grasp the driver's willingness to braking or drive the vehicle. Electronic control means are required for accurate control based on the collected information.
따라서, 기존의 유압식 제동장치는 정확한 제어를 위하여 많은 수의 부품들이 필요하기 때문에 원가 상승의 원인이 되며, 전체 시스템의 구조가 복잡해 지는 문제점이 있다. 또한, 기존의 유압식 제동장치는 차량의 전륜과 후륜에 각각 장착된 휠실린더에 액압을 공급하기 위한 별도의 배관이 필요하며 각 유압 라인에 존재하는 공기를 제거하고 브레이크액을 채우는데 많은 시간이 소요되는 문제점이 있다.Therefore, the conventional hydraulic braking device causes a cost increase because a large number of parts are required for accurate control, and the structure of the entire system is complicated. In addition, the existing hydraulic braking device requires a separate pipe for supplying hydraulic pressure to the wheel cylinders mounted on the front and rear wheels of the vehicle, and takes a long time to remove the air present in each hydraulic line and fill the brake fluid. There is a problem.
이에 본 발명은 유압에 의해 작동하는 제동장치와 전기에 의해 작동하는 제동장치를 복합적으로 구현함으로써, 전체 시스템의 구조를 단순화하여 제조 원가를 절감하고 또한 차량에 장착시에 필요한 공기빼기 작업을 전륜에만 한정함으로써 제조시간의 단축을 목적으로 한다.Accordingly, the present invention implements a combination of a brake operated by hydraulic pressure and a brake operated by electricity, thereby reducing the manufacturing cost by simplifying the structure of the entire system, and performing air bleeding work required for mounting on a vehicle only to the front wheel. It aims at shortening a manufacturing time by limiting.
또한, 본 발명은 차량의 전륜과 후륜을 독립적으로 제어함으로써 보다 우수 한 제동성능을 확보하는 것을 목적으로 한다.In addition, the present invention aims to ensure better braking performance by independently controlling the front and rear wheels of the vehicle.
상기와 같은 목적을 달성하기 위해 본 발명에 의한 차량용 복합제동장치는 리저버에 저장되어 있는 브레이크액을 이용하여 액압(掖壓)을 형성하는 마스터실린더와, 상기 마스터실린더의 입력단과 연결되어 운전자의 답력(踏力)을 증폭시켜 상기 마스터실린더로 전달하는 브레이크페달과, 상기 브레이크페달에 설치되어 상기 브레이크페달의 변위를 측정하는 변위센서와, 차량의 전륜에 설치되어 액압(掖壓)에 의해 제동력을 발생시키는 유압식 제동장치와, 상기 마스터실린더와 상기 유압식 제동장치 사이에 설치되어 상기 유압식 제동장치에 공급되는 액압(掖壓)을 조절하는 유압조절장치와, 차량의 후륜에 설치되어 전기모터에 의해 제동력을 발생시키는 전기식 제동장치와, 상기 전기식 제동장치를 제어하는 제1제어유닛과, 상기 유압조절장치를 제어하고 상기 제1제어유닛과 통신가능한 제2제어유닛으로 이루어진다.In order to achieve the above object, the composite brake device for a vehicle according to the present invention is connected to an input terminal of the master cylinder and a master cylinder for forming a hydraulic pressure using the brake fluid stored in a reservoir, A brake pedal that amplifies the force and transmits it to the master cylinder, a displacement sensor mounted on the brake pedal and measuring the displacement of the brake pedal, and a brake pedal installed on the front wheel of the vehicle to generate braking force by hydraulic pressure. Hydraulic braking device, a hydraulic control device installed between the master cylinder and the hydraulic braking device to adjust the hydraulic pressure supplied to the hydraulic braking device, and installed on the rear wheel of the vehicle to provide braking force by an electric motor. Generating an electric braking device, a first control unit controlling the electric braking device, and the hydraulic control device And control comprises a first control unit and communicate the second control unit.
또한, 상기 유압조절장치는 상기 유압식 제동장치에 별도의 액압을 공급할 수 있는 유압원과, 상기 유압원에서 공급되는 액압을 상기 유압식 제동장치로 유입시키는 유입밸브와, 상기 유압식 제동장치의 액압을 상기 마스터실린더의 리저버로 귀환시키는 유출밸브와, 상기 마스터실린더와 상기 유압식 제동장치 사이의 유로를 개폐시키는 차단밸브와, 상기 마스터실린더와 상기 차단밸브 사이의 유로에 마련되어 상기 브레이크페달의 답력을 형성하는 페달감 형성장치로 이루어진 것을 특징으로 한다.The hydraulic control device may include a hydraulic source capable of supplying a separate hydraulic pressure to the hydraulic braking device, an inflow valve for introducing the hydraulic pressure supplied from the hydraulic source into the hydraulic braking device, and a hydraulic pressure of the hydraulic braking device. An outlet valve for returning to the reservoir of the master cylinder, a shutoff valve for opening and closing the flow path between the master cylinder and the hydraulic braking device, and a pedal provided in the flow path between the master cylinder and the shutoff valve to form a step force of the brake pedal. It is characterized by consisting of a persimmon forming device.
또한, 상기 유압원은 전기모터와, 상기 전기모터에 의해 구동되고 상기 마스터실린더의 리저버에 저장된 브레이크액을 공급받아 고압으로 토출시키는 적어도 하나 이상의 펌프와, 상기 펌프에 의해 토출된 고압의 브레이크액을 저장할 수 있는 어큐뮬레이터로 이루어진 것을 특징으로 한다.The hydraulic source may include an electric motor, at least one pump driven by the electric motor and supplied with the brake fluid stored in the reservoir of the master cylinder and discharged at a high pressure, and a brake fluid discharged by the pump. It is characterized by consisting of an accumulator that can be stored.
또한, 상기 차단밸브는 노멀 오픈형 솔레노이드 밸브로 구성되는 것을 특징으로 한다.In addition, the shut-off valve is characterized in that consisting of a normal open solenoid valve.
또한, 상기 마스터실린더와 상기 페달감 형성장치 사이에 노멀 클로즈드형 솔레노이드 밸브가 구비되는 것을 특징으로 한다.In addition, a normal closed solenoid valve is provided between the master cylinder and the pedal feel forming apparatus.
이하, 본 발명에 따른 바람직한 실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명의 바람직한 실시예에 따른 차량용 복합제동장치의 구성도이다.1 is a block diagram of a composite brake system for a vehicle according to a preferred embodiment of the present invention.
도 1에 도시된 바와 같이, 본 발명에 의한 차량용 복합제동장치는 리저버(11)에 저장되어 있는 브레이크액을 이용하여 액압(掖壓)을 형성하는 마스터실린더(1)와, 마스터실린더(1)의 입력단과 연결되어 운전자의 답력(踏力)을 증폭시켜 마스터실린더(1)로 전달하는 브레이크페달(2)과, 브레이크페달(2)에 설치되어 브레이크페달(2)의 변위를 측정하는 변위센서(21)와, 차량의 전륜에 설치되어 마스터실린더(1)에서 형성된 액압(掖壓)을 공급받아 제동력을 발생시키는 휠실린더가 마련된 유압식 제동장치(3)와, 마스터실린더(1)와 유압식 제동장치(3) 사이에 설치되어 유압식 제동장치(3)에 공급되는 액압(掖壓)을 조절하는 유압조절장치(4)와, 차량의 후륜에 설치되어 전기모터에 의해 제동력을 발생시키는 전기식 제동장치(5)와, 전기식 제동장치(5)를 제어하는 제1제어유닛(6)과, 유압조절장치(4)를 제어하고 제1제어유닛(6)과 CAN(Controller Area Network)통신이 가능한 제2제어유닛(7)을 구비한다.As shown in FIG. 1, the hybrid brake apparatus for a vehicle according to the present invention includes a master cylinder 1 for forming a hydraulic pressure using brake fluid stored in a reservoir 11, and a master cylinder 1. Brake pedal (2) is connected to the input terminal of the driver to amplify the driver's effort to transmit to the master cylinder (1), and the displacement sensor is installed on the brake pedal (2) to measure the displacement of the brake pedal ( 21), a hydraulic braking device (3) provided with a wheel cylinder that is provided on the front wheel of the vehicle to generate a braking force by receiving the hydraulic pressure formed in the master cylinder (1), the master cylinder (1) and the hydraulic braking device (3) a hydraulic control device (4) provided between the hydraulic control device for adjusting the hydraulic pressure supplied to the hydraulic braking device (3), and an electric braking device installed on the rear wheel of the vehicle to generate a braking force by the electric motor ( 5) and the agent controlling the electric braking device (5). A first control unit 6 and a second control unit 7 for controlling the hydraulic pressure regulating device 4 and capable of communicating with the first control unit 6 with a controller area network (CAN) are provided.
마스터실린더(1)는 상부측에 브레이크액을 저장하고 있는 리저버(11)가 설치된다. 이 리저버(11)는 마스터실린더(1)에 직접 브레이크액을 공급하도록 마스터실린터에 일체로 조립될 수도 있고 다른 한편으로는 마스터실린더(1)와 별도로 차량의 엔진룸 내부에 고정설치되어 마스터실린더(1)와 호스 또는 배관으로 연결될 수도 있다. 또한 리저버(11)는 유압조절장치(4)의 별도의 유압원(41)에 브레이크액을 공급하거나 유압조절장치(4)의 유출밸브(43)를 통해 배출되는 브레이크액이 귀환될 수 있도록 유압조절장치(4)와 별도의 배관이나 호스로 연통되어 있다.As for the master cylinder 1, the reservoir 11 which stores brake fluid in the upper side is provided. The reservoir 11 may be integrally assembled to the master cylinder so as to directly supply the brake fluid to the master cylinder 1, and on the other hand, the master cylinder is fixedly installed in the engine room of the vehicle separately from the master cylinder 1. It may be connected with (1) by hose or pipe. In addition, the reservoir 11 supplies brake fluid to a separate hydraulic source 41 of the hydraulic control device 4 or hydraulic pressure so that the brake fluid discharged through the outlet valve 43 of the hydraulic control device 4 can be returned. It is communicated with the regulator 4 by a separate pipe or hose.
일반적으로 마스터실린더(1)는 고장시에도 차량의 최소한의 안전을 보장하기 위해 2개의 독립적인 압력발생챔버로 이루어져 있으며, 각 압력발생챔버의 출구를 통해 유출된 액압은 배관을 거쳐 유압조절장치(4)로 유입된다. In general, the master cylinder (1) is composed of two independent pressure generating chambers in order to ensure the minimum safety of the vehicle even in the event of a failure, the hydraulic pressure flowing through the outlet of each pressure generating chamber is passed through the hydraulic control device ( 4) flows into.
브레이크페달(2)에는 그 작동여부를 감지하기 위한 브레이크램프 스위치(BLS; Brake Lamp Switch)(22)가 장착되고, 또한 운전자의 제동의지를 파악하기 위하여 브레이크페달 변위센서(21)가 마련된다. 브레이크페달 변위센서(21)는 가변저항 타입의 스트로크센서나 회전각 센서로 구성될 수 있다.The brake pedal 2 is equipped with a brake lamp switch (BLS) 22 for detecting whether the brake is operated, and a brake pedal displacement sensor 21 is provided to grasp the driver's willingness to brake. The brake pedal displacement sensor 21 may be configured as a stroke sensor or a rotation angle sensor of a variable resistance type.
유압식 제동장치(3)는 차량의 전륜에 설치되며, 차량의 휠과 함께 회전하는 디스크와, 디스크와 접촉하여 마찰력을 발생하는 마찰재와, 마찰재를 디스크로 전 진시키는 피스톤과, 피스톤을 수용하고 유압조절장치(4)로부터 액압을 공급받는 휠실린더를 포함하는 디스크 브레이크로 구성된다.The hydraulic braking device (3) is installed on the front wheel of the vehicle and accommodates a disk that rotates together with the wheel of the vehicle, a friction material generating friction force in contact with the disk, a piston for advancing the friction material to the disk, and a hydraulic It is composed of a disc brake including a wheel cylinder supplied with hydraulic pressure from the adjusting device (4).
유압조절장치(4)는 다수의 밸브, 압력센서(8), 유압원(41) 및 페달감 형성장치(45)가 다수의 유로가 형성되어 있는 알루미늄 블록에 조립되어 있으며, 마스터실린더(1)와 유압식 제동장치(3) 사이에서 배관에 의해 연결되며 차량의 엔진룸 내부 일측에 고정설치된다.Hydraulic regulator 4 is a plurality of valves, pressure sensor 8, the hydraulic source 41 and the pedal feeling forming device 45 is assembled to an aluminum block formed with a plurality of flow paths, the master cylinder (1) And is connected by a pipe between the hydraulic braking device (3) and is fixedly installed in one side of the engine room of the vehicle.
유압조절장치(4)는 유압식 제동장치(3)에 마스터실린더(1)와 별도의 액압을 공급할 수 있는 유압원(41)을 구비하며, 유압원(41)과 유압식 제동장치(3) 사이의 유로에는 노멀 클로즈드형 솔레노이드 밸브로 구성된 유입밸브(42)가 마련된다. 유압식 제동장치(3)와 마스터실린더(1)의 리저버(11) 사이의 유로에는 유압식 제동장치(3)의 압력을 해제시켜 리저버(11)로 귀환시키도록 하는 노멀 클로즈드형 솔레노이드 밸브로 구성된 유출밸브(43)가 마련된다. 또한 마스터실린더(1)에서 형성된 액압이 직접 유압식 제동장치(3)에 전달되는 것을 차단할 수 있도록 마스터실린더(1)의 출구와 유압식 제동장치(3) 사이의 유로에는 노멀 오픈형 솔레노이드 밸브로 구성된 차단밸브(44)가 마련된다. Hydraulic control device (4) is provided with a hydraulic source (41) which can supply a separate hydraulic pressure to the master cylinder (1) to the hydraulic braking device (3), between the hydraulic source 41 and the hydraulic braking device (3) The flow path is provided with an inlet valve 42 composed of a normal closed solenoid valve. Outflow valve composed of a normally closed solenoid valve for releasing the pressure of the hydraulic braking device 3 and returning it to the reservoir 11 in the flow path between the hydraulic braking device 3 and the reservoir 11 of the master cylinder 1. 43 is provided. In addition, a shutoff valve composed of a normal open solenoid valve is provided at a flow path between the outlet of the master cylinder 1 and the hydraulic braking device 3 so that the hydraulic pressure generated in the master cylinder 1 can be prevented from being directly transmitted to the hydraulic braking device 3. 44 is provided.
이러한 유입밸브(42), 유출밸브(43) 및 차단밸브(44)가 하나씩 한 조를 이루어 마스터실린더(1)의 두 개의 액압발생챔버 중 어느 하나와 연결되어 있다.The inlet valve 42, the outlet valve 43, and the shutoff valve 44 are connected to one of two hydraulic pressure generating chambers of the master cylinder 1 in a pair.
또한, 유압조절장치(4)는 마스터실린더(1)의 전방 액압발생챔버의 출구와 노멀 클로즈드형 솔레노이드 밸브를 매개로 하여 연결되고, 마스터실린더(1)와 차단밸브(44) 사이의 유로에 마련되는 페달감 형성장치(45)를 구비한다.In addition, the hydraulic control device 4 is connected via the outlet of the front hydraulic generating chamber of the master cylinder 1 and the normal closed solenoid valve, and is provided in the flow path between the master cylinder 1 and the shutoff valve 44. Pedal feeling forming device 45 is provided.
페달감 형성장치(45)는 차단밸브(44)에 의해 마스터실린더(1)로부터 유압식 제동장치(3)로의 액압이 공급되는 것이 차단되었을 때 운전자의 페달감을 형성시키기 위하여 마스터실린더(1)에서 형성된 액압을 수용하도록 진퇴가능한 피스톤과 탄성부재를 구비하여 형성한다.The pedal feeling forming device 45 is formed in the master cylinder 1 to form a pedal feeling of the driver when the hydraulic pressure from the master cylinder 1 to the hydraulic braking device 3 is blocked by the shutoff valve 44. And a retractable piston and an elastic member to receive the hydraulic pressure.
유압원(41)은 마스터실린더(1)의 리저버(11)에 저장된 브레이크액을 공급받아 고압으로 토출시키는 펌프(412)와, 펌프(412)를 구동시키는 전기모터(411)와, 펌프(412)에 의해 토출된 브레이크액을 고압으로 저장할 수 있는 어큐뮬레이터(413)로 구성된다. 펌프(412)는 모터(411)의 회전축과 연동되는 편심캠에 의해 모터(411)의 출력축과 수직으로 배치된 피스톤이 직선왕복 운동할 수 있는 구조이다.The hydraulic pressure source 41 includes a pump 412 for receiving brake fluid stored in the reservoir 11 of the master cylinder 1 and discharging it at a high pressure, an electric motor 411 for driving the pump 412, and a pump 412. And an accumulator 413 capable of storing the brake fluid discharged by the high pressure. The pump 412 has a structure in which a piston arranged perpendicularly to the output shaft of the motor 411 may linearly reciprocate by an eccentric cam that is interlocked with the rotation shaft of the motor 411.
또한, 어큐뮬레이터(413)에 저장되는 브레이크액의 압력이 지나치게 높아지는 것을 방지하기 위하여 어큐뮬레이터(413)와 리저버(11)사이의 유로에 릴리프밸브(46)를 추가적으로 마련한다.In addition, in order to prevent the pressure of the brake fluid stored in the accumulator 413 from being too high, a relief valve 46 is additionally provided in the flow path between the accumulator 413 and the reservoir 11.
또한, 마스터실린더(1)의 액압발생챔버의 출구단, 유압식 제동장치(3)의 입구단 및 어큐뮬레이터(413)의 출구단에는 액압을 측정할 수 있는 압력센서(8)가 각각 구비된다.In addition, at the outlet end of the hydraulic pressure generating chamber of the master cylinder 1, the inlet end of the hydraulic braking device 3, and the outlet end of the accumulator 413 are provided with a pressure sensor 8 capable of measuring the hydraulic pressure.
전기식 제동장치(5)는 전기모터와, 전기모터의 회전속도를 감속시키는 한편 전달되는 힘을 증폭시키기 위한 감속기와, 전기모터의 회전운동을 직선운동으로 변환시켜주는 변환장치와, 디스크를 가압하여 마찰력을 발생시키는 마찰재를 포함하여 구성된다.The electric braking device 5 includes an electric motor, a speed reducer for reducing the rotational speed of the electric motor and amplifying the transmitted force, a converter for converting the rotational motion of the electric motor into a linear motion, and pressurizing the disk. It comprises a friction material for generating a friction force.
제1제어유닛(6)은 전기식 제동장치(5)의 동작을 제어하며, 제2제어유닛(7)과 CAN(Controller Area Network)로 연결되어 있다. The first control unit 6 controls the operation of the electric braking device 5 and is connected to the second control unit 7 by a controller area network (CAN).
제2제어유닛(7)은 유압조절장치(4)를 제어하며, 차량의 상태와 운전자의 제동의지를 파악하기 위한 휠스피드 센서(9), 횡방향 가속도 센서(12), 종방향 가속도 센서(13), 요레이트(Yaw rate) 센서(14), 조향각 센서(15), 브레이크페달 변위센서(21) 및 브레이크 램프 스위치(22)와 전기적으로 연결되어 있다.The second control unit 7 controls the hydraulic control device 4, and the wheel speed sensor 9, the lateral acceleration sensor 12, the longitudinal acceleration sensor (to determine the state of the vehicle and the driver's willingness to brake) 13), the yaw rate sensor 14, the steering angle sensor 15, the brake pedal displacement sensor 21 and the brake lamp switch 22 are electrically connected.
이하에서는 본 발명의 바람직한 실시예에 따른 동작을 설명하기로 한다.Hereinafter, an operation according to a preferred embodiment of the present invention will be described.
운전자가 브레이크페달(2)을 밟게 되면 지렛대의 원리에 의해 페달 답력이 일정 배율로 증폭되어 마스터실린더(1)에 전달된다. When the driver steps on the brake pedal 2, the pedal effort is amplified by a certain magnification by the principle of the lever and transmitted to the master cylinder 1.
이때 브레이크페달(2)에 장착되어 있는 브레이크램프 스위치(22)에 의해 운전자의 제동의지가 1차적으로 제2제어유닛(7)으로 전달되며, 노멀 오픈형 솔레노이드 밸브로 구성된 차단밸브(44)가 닫힘으로써 마스터실린더(1)의 액압발생챔버에서 발생한 액압이 유압식 제동장치(3)로 전달되지 않고 페달감 형성장치(45)로 전달된다. 페달감 형성장치(45)는 마스터실린더(1)로부터 공급된 액압으로 인해 피스톤이 후방으로 밀리게 됨으로써 브레이크페달(2)이 더욱 눌려지게 된다. 브레이크페달(2)이 눌려짐으로써 운전자는 페달감을 느낄 수 있다.At this time, the driver's braking intention is primarily transmitted to the second control unit 7 by the brake lamp switch 22 mounted on the brake pedal 2, and the shutoff valve 44 composed of a normal open solenoid valve is closed. As a result, the hydraulic pressure generated in the hydraulic pressure generating chamber of the master cylinder 1 is not transmitted to the hydraulic brake device 3 but to the pedal feeling forming device 45. The pedal feel forming device 45 is pushed backward by the piston due to the hydraulic pressure supplied from the master cylinder 1, the brake pedal 2 is further pressed. By the brake pedal 2 being pressed, the driver can feel the pedal.
제2제어유닛(7)은 브레이크페달(2)에 장착되어 있는 브레이크페달 변위센서(21)와 마스터실린더(1)의 출구단에 연결된 압력센서(8)로부터 변위와 압력 신호를 전달받아 운전자의 제동의지를 파악하게 된다. 또한, 휠스피드 센서(9), 횡방향 가속도 센서(12), 종방향 가속도 센서(13), 요레이트 센서(14), 조향각 센서(15) 및 압력센서(8)의 신호를 전달받아 차량의 진행속도와 거동을 파악하게 된다.The second control unit 7 receives displacement and pressure signals from the brake pedal displacement sensor 21 mounted on the brake pedal 2 and the pressure sensor 8 connected to the outlet of the master cylinder 1. Determine the willingness to brake. The vehicle also receives signals from the wheel speed sensor 9, the lateral acceleration sensor 12, the longitudinal acceleration sensor 13, the yaw rate sensor 14, the steering angle sensor 15, and the pressure sensor 8. You will know the speed and behavior of the course.
운전자의 제동의지와 차량의 현상태를 파악한 후에 최적의 제동상황을 구현하도록 제2제어유닛(7)은 어큐뮬레이터(413)에 미리 고압으로 저장된 액압을 차량의 전륜에 장착된 유압식 제동장치(3)에 필요한 공급하도록 노멀 클로즈드형 솔레노이드로 구성된 유입밸브(42)를 구동시킨다.After grasping the driver's braking intention and the current status of the vehicle, the second control unit 7 transfers the hydraulic pressure stored in advance to the accumulator 413 to the hydraulic braking device 3 mounted on the front wheel of the vehicle. An inlet valve 42 consisting of a normally closed solenoid is driven to provide the necessary feed.
또한, 제2제어유닛(7)과 CAN(Controller Area Network) 통신이 가능한 제1제어유닛(6)은 차량의 후륜에 장착된 전기식 제동장치(5)의 모터를 구동시킨다.In addition, the first control unit 6 capable of communicating with the second control unit 7 and the controller area network (CAN) drives the motor of the electric brake 5 mounted on the rear wheel of the vehicle.
실시간으로 차량의 상태를 모니터링함으로써 차량의 전륜에 장착된 유압식 제동장치(3)에 인가되는 액압과, 후륜에 장착된 전기식 제동장치(5)의 모터에 인가되는 전압을 제어함으로써 전륜과 후륜 모두에 제동력이 가해지게 된다.By monitoring the condition of the vehicle in real time, the hydraulic pressure applied to the hydraulic brake system 3 mounted on the front wheel of the vehicle and the voltage applied to the motor of the electric brake system 5 mounted on the rear wheel are controlled to control both the front wheel and the rear wheel. Braking force is applied.
본 발명은 차량의 전륜에는 유압식 제동장치(3)를, 후륜에는 전기식 제동장치(5)를 복합적으로 구현함으로써, 후륜측에 별도의 배관 작업이 필요없으며 또한 공기빼기 작업을 전륜에만 한정하게 되어 제조시간이 단축되는 효과가 있다.According to the present invention, the hydraulic braking device 3 is implemented on the front wheel of the vehicle, and the electric braking device 5 is implemented on the rear wheel, so that no additional piping work is required on the rear wheel and the air bleeding operation is limited to the front wheel. The time is shortened.
또한, 본 발명은 차량의 전륜과 후륜을 독립적으로 제어함으로써 보다 우수한 제동성능을 확보할 수 있다.In addition, the present invention can secure more excellent braking performance by independently controlling the front wheel and the rear wheel of the vehicle.
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| KR1020070030411A KR100863544B1 (en) | 2007-03-28 | 2007-03-28 | Vehicle Braking System |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101536247B1 (en) * | 2014-04-25 | 2015-07-13 | 현대모비스 주식회사 | Brake device and brake method for vehicle |
| KR101655169B1 (en) * | 2015-05-07 | 2016-09-07 | 현대자동차 주식회사 | Braking system using a braking device having eletro mechanical parking function and control method thereof |
| CN110325414A (en) * | 2017-02-27 | 2019-10-11 | 株式会社爱德克斯 | Vehicle brake control device |
| KR20200022025A (en) * | 2017-09-27 | 2020-03-02 | 히다치 오토모티브 시스템즈 가부시키가이샤 | Brake device, vehicle control device and electric brake control device |
| KR20220001260A (en) * | 2020-06-29 | 2022-01-05 | 주식회사 만도 | Brake control apparatus and control method of brake apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101683852B1 (en) * | 2010-06-28 | 2016-12-20 | 현대모비스 주식회사 | Hybrid brake system for vehicle |
| KR101197417B1 (en) * | 2010-09-06 | 2012-11-05 | 주식회사 동희산업 | Displacement diagnosis sensor of brake pedal having stop lamp switch function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4342918A1 (en) * | 1993-12-16 | 1995-06-22 | Bosch Gmbh Robert | Brake system with anti-lock device for a road vehicle, especially a passenger car |
| DE602004003852T2 (en) * | 2003-04-24 | 2007-08-30 | Nissan Motor Co., Ltd., Yokohama | vehicle brake system |
| KR100535009B1 (en) * | 2003-09-17 | 2005-12-07 | 현대자동차주식회사 | Method for manufacturing double layer coated Pd only three way catalyst |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101536247B1 (en) * | 2014-04-25 | 2015-07-13 | 현대모비스 주식회사 | Brake device and brake method for vehicle |
| US9623853B2 (en) | 2014-04-25 | 2017-04-18 | Hyundai Mobis Co., Ltd. | Brake device and method for vehicle |
| KR101655169B1 (en) * | 2015-05-07 | 2016-09-07 | 현대자동차 주식회사 | Braking system using a braking device having eletro mechanical parking function and control method thereof |
| US9783177B2 (en) | 2015-05-07 | 2017-10-10 | Hyundai Motor Company | Braking system having electromechanical braking function and method for controlling the same |
| CN110325414A (en) * | 2017-02-27 | 2019-10-11 | 株式会社爱德克斯 | Vehicle brake control device |
| CN110325414B (en) * | 2017-02-27 | 2021-07-20 | 株式会社爱德克斯 | Vehicle brake control device |
| KR20200022025A (en) * | 2017-09-27 | 2020-03-02 | 히다치 오토모티브 시스템즈 가부시키가이샤 | Brake device, vehicle control device and electric brake control device |
| KR20220001260A (en) * | 2020-06-29 | 2022-01-05 | 주식회사 만도 | Brake control apparatus and control method of brake apparatus |
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| KR100863544B1 (en) | 2008-10-15 |
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