KR20020055062A - brake system of vehicle - Google Patents

brake system of vehicle Download PDF

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Publication number
KR20020055062A
KR20020055062A KR1020000084416A KR20000084416A KR20020055062A KR 20020055062 A KR20020055062 A KR 20020055062A KR 1020000084416 A KR1020000084416 A KR 1020000084416A KR 20000084416 A KR20000084416 A KR 20000084416A KR 20020055062 A KR20020055062 A KR 20020055062A
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KR
South Korea
Prior art keywords
air
oil
vehicle
ecu
oil passage
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KR1020000084416A
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Korean (ko)
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KR100383998B1 (en
Inventor
박형빈
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이계안
현대자동차주식회사
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Priority to KR10-2000-0084416A priority Critical patent/KR100383998B1/en
Publication of KR20020055062A publication Critical patent/KR20020055062A/en
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Publication of KR100383998B1 publication Critical patent/KR100383998B1/en

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Classifications

    • 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
    • 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
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE: A brake of a vehicle is provided to reduce the oil pressure of a brake in a low-speed travel, to reduce the wear speed of a brake lining, and to minimize the loss of the braking power by variably controlling the amount of the oil supplied to an air master from an oil reservoir. CONSTITUTION: An oil supply unit consists of an oil reservoir(5) connected with an air master(6) via an oil path(5a), an ECU(Electronic Control Unit)(30) to decide a vehicle speed transmitted from a wheel speed sensor(20), and a flow rate control unit(40) installed on the oil path to variably control the sectional area of the oil path. If a brake pedal is stepped on, the ECU operates the flow rate control unit. At a low speed, the ECU applies a small variable resistance value to a coil of the flow rate control unit. A rotating bar rotates in a small angle to open the oil path. If a vehicle speed is high, the oil path is opened in a large angle.

Description

자동차의 제동장치{brake system of vehicle}Brake system of vehicle

본 발명은 자동차의 제동장치에 관한 것으로, 특히 주행속도에 따라 에어마스터로 공급되는 유량을 가변적으로 조절하여 브레이크라이닝의 마모속도를 감소시키고 차량유지비를 절감시킬 수 있도록 된 자동차의 제동장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for an automobile, and more particularly, to a braking device for a vehicle that can reduce abrasion speed of a brake lining and reduce a vehicle maintenance cost by controlling a flow rate supplied to an air master according to a traveling speed. .

일반적으로, 제동장치(break system)란 주행하는 자동차에 제동력을 발생시켜 자동차가 스스로 움직이지 않도록 하는 장치로서, 보통 브레이크페달의 조작에 따라 마스타실린더에서 발생/공급되는 유압에 의해 작동되게 된다.In general, a brake system is a device that generates a braking force on a driving vehicle so that the vehicle does not move by itself, and is usually operated by hydraulic pressure generated / supplied from the master cylinder according to the operation of the brake pedal.

즉, 종래의 제동장치는 도 1에 도시된 바와 같이, 대기압상태의 공기를 제동장치를 작동시킬 수 있는 압력(대략 9㎏/㎠)으로 압축시키도록 된 에어컴프레서(1)와, 이 에어컴프레서(1)와 연결되면서 압축공기내의 수분을 제거하도록 된 에어드라이(2)와, 이 에어드라이(2)와 연결되면서 압축공기를 저장하도록 된 에어탱크(3)와, 운전자의 답력에 따라 개폐되면서 상기 에어탱크(3)내에 저장된 압축공기를 전달시켜주도록 된 브레이크밸브(4)와, 이 브레이크밸브(4)와 연결되고 오일을 공급시켜주는 오일리저버(5)와 연결되어 공기압을 오일압으로 변환시켜 주도록 된 에어마스터(6) 및, 이 에어마스터(6)에서 만들어진 유압을 이용해 제동력을 발생시키도록 된 휠실린더(7)로 이루어져 있다.That is, the conventional braking device, as shown in Figure 1, the air compressor 1 is to compress the air at atmospheric pressure to a pressure (approximately 9kg / ㎠) to operate the braking device, and this air compressor (1) connected to the air dry to remove the moisture in the compressed air, the air tank (3) connected to the air dry (2) to store the compressed air, and opened and closed according to the driver's step It is connected to the brake valve (4) to deliver the compressed air stored in the air tank (3), and the oil reservoir (5) connected to the brake valve (4) to supply oil to convert the air pressure into oil pressure The air master 6 is made to be made, and the wheel cylinder 7 is to generate a braking force by using the hydraulic pressure produced in the air master (6).

한편, 상기 에어컴프레서(1)에는 흡기매니폴드(도시않됨)로부터 유입된 공기의 이물질을 제거하기 위한 에어실린더(8)가 연결되고, 상기 에어드라이(2)에는 에어드라이(3)내에 쌓인 먼지를 제거하도록 된 퍼지탱크(9)가 연결되는 구조로 되어 있다.On the other hand, the air compressor (1) is connected to the air cylinder (8) for removing the foreign matter from the air introduced from the intake manifold (not shown), the air dry (2) dust accumulated in the air dryer (3) The purge tank 9 is to be connected to the structure to remove.

따라서, 상기 운전자가 브레이크페달을 밟아 브레이크밸브(4)를 개방시켜 주게 되면, 에어탱크(3)내에 저장된 압축공기가 에어마스터(6)로 공급되게 되는데, 상기 에어마스터(6)에는 오일리저버(5)로부터 공급된 오일이 충진되어 있으므로,상기 에어마스터(6)로 공급된 공기압은 오일압으로 변환되어 전륜과 후륜의 휠실린더(7)로 각각 공급되게 된다.Therefore, when the driver presses the brake pedal to open the brake valve 4, the compressed air stored in the air tank 3 is supplied to the air master 6, and the oil master 6 is provided with an oil reservoir ( Since the oil supplied from 5) is filled, the air pressure supplied to the air master 6 is converted into oil pressure and supplied to the wheel cylinders 7 of the front wheel and the rear wheel, respectively.

그리고, 상기 휠실린더(7)로 공급된 오일압에 의해 브레이크 앗세이를 구성하는 브레이크라이닝이 브레이크드럼에 압착됨으로써 제동력을 발생시키게 된다.Then, the brake lining constituting the brake assembly is pressed by the brake drum by the oil pressure supplied to the wheel cylinder 7 to generate a braking force.

그러나, 상기와 같은 종래의 제동장치에 의하면, 브레이크밸브(4)가 개방됨에 따라 에어마스터(6)에서 발생되는 오일압이 차량의 주행속도에 상관없이 항상 일정한 유압을 발생시키게 되므로, 브레이크드럼에 작동하는 제동력이 항상 일정할 뿐만 아니라, 이로인해 브레이크라이닝의 마모속도도 증대되어 차량유지비가 과도하게 소모되는 문제점이 있었다.However, according to the conventional braking device as described above, as the brake valve 4 is opened, the oil pressure generated in the air master 6 always generates a constant hydraulic pressure regardless of the traveling speed of the vehicle. Not only the braking force is always constant, but this also increases the wear rate of the brake lining, there is a problem that the vehicle maintenance cost is excessively consumed.

즉, 저속으로 주행중인 차량에 제동력을 발생시키게 되면 저속의 차량을 제동하기 위한 제동력만이 발생되어야 하지만, 상기 에어마스터(6)에서 발생되는 오일압이 차량의 주행속도에 상관없이 항상 일정한 유압을 발생시키게 되므로, 브레이크라이닝의 마모속도가 증대되면서 제동손실이 초래되어 차량유지비가 과도하게 소모되는 문제점이 있었다.That is, when the braking force is generated in a vehicle traveling at a low speed, only a braking force for braking a low-speed vehicle should be generated. However, the oil pressure generated in the air master 6 always maintains a constant hydraulic pressure regardless of the traveling speed of the vehicle. Since the wear rate of the brake lining is increased, the braking loss is caused, and the vehicle maintenance cost is excessively consumed.

이에 본 발명은 상기와 같은 문제점을 해소하기 위해 안출된 것으로, 제동시 주행속도에 따라 에어마스터로 공급되는 오일양을 가변적으로 조절함으로써, 저속 및 고속주행시 발생되는 제동력의 크기를 서로 다르게 하여 브레이크라이닝의 마모속도를 감소시키면서 제동손실이 줄이고 차량유지비를 절감시킬 수 있도록 된 자동차의 제동장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by varying the amount of oil supplied to the air master according to the traveling speed during braking, by varying the amount of braking force generated during low and high speed driving of the brake lining It is an object of the present invention to provide a braking device for a vehicle that can reduce braking loss and reduce vehicle maintenance costs while reducing wear speed.

상기와 같은 목적을 달성하기 위한 본 발명의 제동장치는, 휠속도센서로부터 전달된 신호에 의해 차량의 주행속도를 판별하도록 된 ECU와, 오일리저버와 에어마스터를 연결하는 오일통로상에 설치되어 상기 ECU의 제어신호에 의해 오일통로의 단면적을 가변적으로 조절하도록 된 유량조절수단이 구비된 것을 특징으로 한다.The braking device of the present invention for achieving the above object is installed on the oil passage connecting the ECU and the oil reservoir and the air master to determine the traveling speed of the vehicle by the signal transmitted from the wheel speed sensor It is characterized in that the flow rate adjusting means for variably adjusting the cross-sectional area of the oil passage by the control signal of the ECU.

도 1은 종래의 제동장치를 설명하기 위한 개략적인 구성도,1 is a schematic configuration diagram for explaining a conventional braking device;

도 2는 본 발명에 따른 제동장치를 설명하기 위한 개략적인 구성도,2 is a schematic configuration diagram for explaining a braking device according to the present invention;

도 3은 본 발명에 따른 유량조절수단을 설명하기 위한 개략적인 종단면도,Figure 3 is a schematic longitudinal cross-sectional view for explaining the flow control means according to the invention,

도 4는 본 발명에 따른 단면적조절판을 설명하기 위한 개략적인 종단면도이다.Figure 4 is a schematic longitudinal cross-sectional view for explaining the cross-sectional area control plate according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

5 - 오일리저버 5a - 오일통로5-Oil reservoir 5a-Oil passage

6 - 에어마스터 20 - 휠속도센서6-Airmaster 20-Wheel Speed Sensor

30 - ECU(전자제어유니트) 40 - 유량조절수단30-ECU (electronic control unit) 40-flow control means

41 - 하우징 41a - 결합홈41-housing 41a-mating groove

42 - 회전바아 43 - 단면적조절판42-Swivel Bar 43-Cross Section Control Plate

44 - 코일 45 - 리턴스프링44-Coil 45-Return Spring

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 제동장치를 설명하기 위한 개략적인 구성도로서, 종래구조와 동일한 부위에는 동일한 참조부호를 붙이면서 설명하기로 한다.Figure 2 is a schematic configuration diagram for explaining a braking device according to the present invention, will be described with the same reference numerals to the same parts as the conventional structure.

본 발명에 따른 제동장치는 크게 에어마스터(6)로 압축공기를 공급하는 수단 및 상기 에어마스터(6)로 브레이크 오일을 공급하는 수단으로 구성되며, 상기 에어마스터(6)는 오일압을 전륜과 후륜의 휠실린더(7)로 공급하여 차량의 주행속도에 상응하는 제동력을 발생시키도록 되어 있다.The braking device according to the present invention is composed of a means for supplying compressed air to the air master 6 and a means for supplying brake oil to the air master 6, the air master 6 is the oil pressure and the front wheel It is supplied to the wheel cylinder 7 of the rear wheel to generate a braking force corresponding to the traveling speed of the vehicle.

즉, 상기 에어마스터(6)로 압축공기를 공급하기 위한 수단은, 대기압상태의 공기를 제동장치를 작동시킬 수 있는 압력(대략 9㎏/㎠)으로 압축시키도록 된 에어컴프레서(1)와, 이 에어컴프레서(1)와 연결되면서 압축공기내의 수분을 제거하도록 된 에어드라이(2)와, 이 에어드라이(2)와 연결되면서 압축공기를 저장하도록 된 에어탱크(3)와, 운전자의 답력에 따라 개폐되면서 상기 에어탱크(3)내에 저장된 압축공기를 전달시켜주도록 된 브레이크밸브(4)로 이루어져 있다.That is, the means for supplying the compressed air to the air master 6, the air compressor (1) is to compress the air at atmospheric pressure to a pressure (approximately 9 kg / ㎠) to operate the braking device, An air dry 2 connected to the air compressor 1 to remove moisture in the compressed air, an air tank 3 connected to the air dry 2 to store compressed air, and The brake valve 4 is configured to deliver the compressed air stored in the air tank 3 while being opened and closed accordingly.

그리고, 상기 에어마스터(6)로 브레이크 오일을 공급하는 수단은, 상기 에어마스터(6)와 오일통로(5a)를 매개로 연결되는 오일리저버(5)와, 휠속도센서(20)로부터 전달되는 차량의 주행속도를 판별하도록 된 ECU(30;전자제어유니트)와, 상기 오일통로(5a)상에 설치되어 ECU(30)의 제어신호에 의해 오일통로(5a)의 단면적을 가변적으로 조절하도록 된 유량조절수단(40)으로 이루어져 있다.And, the means for supplying the brake oil to the air master 6, the oil reservoir (5) connected through the air master 6 and the oil passage (5a) and is transmitted from the wheel speed sensor 20 An ECU 30 (electronic control unit) configured to determine the traveling speed of the vehicle and the oil passage 5a are installed on the oil passage 5a to variably adjust the cross-sectional area of the oil passage 5a by a control signal of the ECU 30. It consists of a flow control means 40.

그리고, 상기 에어마스터(6)는, 공기압을 오일압으로 변환시키면서 전륜과 후륜에 장착된 휠실린더(7)로 제동압을 전달하여 차량의 주행속도에 상응하는 제동력을 발생시키는 구조로 되어 있다.The air master 6 has a structure that generates a braking force corresponding to the traveling speed of the vehicle by transferring the braking pressure to the wheel cylinders 7 mounted on the front wheel and the rear wheel while converting the air pressure into oil pressure.

여기서, 상기 유량조절수단(40)은 도 3과 도 4에 도시된 바와 같이, 일측으로 개구되는 원형의 결합홈(41a)이 내부에 구비된 하우징(41)과, 일단이 상기 결합홈(41a)의 안쪽에 회동가능하도록 결합되고 타단이 상기 오일통로(5a)내에 위치되도록 설치되는 회전바아(42)와, 이 회전바아(42)의 단부에 일체로 형성되어 상기 오일통로(5a)의 단면적을 가변적으로 조절하도록 된 단면적조절판(43)과, 상기 회전바아(42)의 외주면에 감겨져 ECU(30)의 제어신호에 의해 인가되는 가변저항을 이용해 상기 회전바아(42)를 일방향으로 회전시켜 주도록 된 코일(44)로 이루어져 있다.Here, the flow control means 40 is shown in Figure 3 and 4, the housing 41 is provided with a circular coupling groove (41a) that is open to one side and one end of the coupling groove (41a) Rotating bar 42 is rotatably coupled to the inner side and installed so that the other end is located in the oil passage (5a), and integrally formed at the end of the rotary bar (42), the cross-sectional area of the oil passage (5a) To rotate the rotary bar 42 in one direction using a cross-sectional area control plate 43 and a variable resistor wound on the outer circumferential surface of the rotary bar 42 and applied by a control signal of the ECU 30. Consisting of a coil 44.

또한, 상기 회전바아(42)에는, 상기 회전바아(42)에 감겨지며 양단이 하우징(41)과 회전바아(42)에 각각 결합되어 회전바아(42)의 설치위치를 고정시켜주면서 상기 ECU(30)의 제어신호에 의해 인가되는 전원이 단락될 때 일방향으로 회전된 회전바아(42)를 타방향으로 회전시켜 탄성복원시키도록 된 리턴스프링(45)이 구비되어 있다.In addition, the rotary bar 42 is wound around the rotary bar 42 and both ends are coupled to the housing 41 and the rotary bar 42, respectively, to fix the installation position of the rotary bar 42 while the ECU ( When the power applied by the control signal of 30 is short-circuited, the return spring 45 is provided to rotate the rotation bar 42 rotated in one direction to the other direction to restore elasticity.

한편, 상기 에어컴프레서(1)에는 흡기매니폴드(도시않됨)로부터 유입된 공기의 이물질을 제거하기 위한 에어실린더(8)가 연결되고, 상기 에어드라이(2)에는 에어드라이(3)내에 쌓인 먼지를 제거하도록 된 퍼지탱크(9)가 연결되는 구조로 되어 있다.On the other hand, the air compressor (1) is connected to the air cylinder (8) for removing the foreign matter from the air introduced from the intake manifold (not shown), the air dry (2) dust accumulated in the air dryer (3) The purge tank 9 is to be connected to the structure to remove.

이하, 본 발명에 따른 제동장치의 작동과정에 대해 도 2 내지 도 4를 참조로 상세히 설명한다.Hereinafter, the operation of the braking device according to the present invention will be described in detail with reference to FIGS. 2 to 4.

먼저, 차량이 주행을 하게 되면 차륜에 장착된 휠속도센서(20)가 주행속도를 감지하여 ECU(30)로 전기신호를 전송하게 되며, 상기 ECU(30)는 전달된 신호를 이용하여 차량이 고속주행 상태인지 또는 저속주행 상태인지를 판별하게 된다.First, when the vehicle travels, the wheel speed sensor 20 mounted on the wheel detects the traveling speed and transmits an electric signal to the ECU 30. The ECU 30 uses the transmitted signal to drive the vehicle. It is determined whether the vehicle is in the high speed driving state or the low speed driving state.

이때, 운전자가 브레이크페달을 밟아주게 되면 상기 ECU(30)는 주행속도에 상응하는 브레이크 오일이 에어마스터(6)로 공급되도록 유량조절수단(40)을 작동시키게 된다.At this time, when the driver presses the brake pedal, the ECU 30 operates the flow rate adjusting means 40 so that the brake oil corresponding to the traveling speed is supplied to the air master 6.

즉, 주행중 운전자가 브레이크페달을 밟아주게 되면 상기 ECU(30)가 릴레이(46)를 구동시켜 유량조절수단(40)의 코일(44)로 전원을 통전시켜 주게 되고, 상기 회전바아(42)는 인가되는 가변저항에 의해 일방향으로 회전되면서 오일통로(5a)를 개방시켜 주게 된다.That is, when the driver presses the brake pedal while driving, the ECU 30 drives the relay 46 to energize the power to the coil 44 of the flow regulating means 40, and the rotation bar 42 is The oil passage 5a is opened while being rotated in one direction by an applied variable resistor.

이때, 상기 ECU(30)가 저속주행 상태에서 제동되는 상태라고 판별하게 되면 상기 코일(44)에는 작은 가변저항값이 인가되고, 상기 단면적조절판(43)은 적은 회전각도로 회전하게 되며, 이로인해 상기 오일통로(5a)는 저속주행에 상응되도록 약간만 개방되게 된다.At this time, when it is determined that the ECU 30 is braked in the low-speed driving state, a small variable resistance value is applied to the coil 44, and the cross-sectional area control plate 43 rotates at a small rotational angle. The oil passage 5a is only slightly opened to correspond to the low speed driving.

반대로, 상기 ECU(30)가 고속주행 상태에서 제동되는 상태라고 판별하게 되면 상기 코일(44)에는 큰 가변저항값이 인가되고, 상기 단면적조절판(43)은 저속주행 상태보다 큰 회전각도로 회전하게 되며, 이로인해 상기 오일통로(5a)는 고속주행에 상응되도록 많이 개방되게 된다.On the contrary, when it is determined that the ECU 30 is braked in the high speed driving state, a large variable resistance value is applied to the coil 44, and the cross-sectional area control plate 43 rotates at a rotation angle greater than the low speed driving state. As a result, the oil passage 5a is opened to correspond to high speed driving.

한편, 상기 오일통로(5a)가 개방되어 오일리저버(5)의 오일이 에어마스터(6)로 공급되면, 상기 에어마스터(6)로 공급된 공기압은 오일압으로 변환되어 전륜과 후륜의 휠실린더(7)로 각각 공급되게 되며, 상기 휠실린더(7)로 공급된 오일압에 의해 브레이크 앗세이를 구성하는 브레이크라이닝이 브레이크드럼에 압착됨으로써 제동력을 발생시키게 된다.On the other hand, when the oil passage (5a) is opened so that the oil of the oil reservoir (5) is supplied to the air master 6, the air pressure supplied to the air master 6 is converted into oil pressure to the wheel cylinder of the front wheel and the rear wheel (7), respectively, and the brake lining constituting the brake assembly by the oil pressure supplied to the wheel cylinder (7) is pressed on the brake drum to generate a braking force.

이와 같이, 상기 ECU(30)가 차량의 주행상태에 따라 오일리저버(5)에서 에어마스터(6)로 공급되는 오일양을 가변적으로 조절하게 됨으로써, 저속주행시와 고속주행시에 발생되는 제동압력은 서로 틀리게 되며, 이로인해 저속주행시 발생되는 브레이크의 오일압력이 도 1을 참조로 전술한 종래의 제동장치보다 감소하게 됨으로써 브레이크라이닝의 마모속도를 감소시킬 수 있을 뿐만 아니라 제동손실도 줄일 수 있고 차량유지비도 절감시킬 수 있게 된다.As such, the ECU 30 variably adjusts the amount of oil supplied from the oil reservoir 5 to the air master 6 according to the driving state of the vehicle, so that the braking pressures generated during low speed driving and high speed driving are different from each other. As a result, the oil pressure of the brake generated at low speed is reduced compared to the conventional braking device described above with reference to FIG. 1, which not only reduces the wear speed of the brake lining but also reduces the braking loss and reduces the vehicle maintenance cost. You can do it.

이상 설명한 바와 같이 본 발명에 의하면, 오일리저버와 에어마스터를 연결하는 오일통로의 단면적을 가변적으로 조절하도록 된 유량조절수단이 ECU에 의해 제어되도록 설치되어져, 차량의 주행상태에 따라 오일리저버에서 에어마스터로 공급되는 오일양이 가변적으로 조절됨으로써, 저속주행시 발생되는 브레이크의 오일압력이 감소하게 되며 이로인해 브레이크라이닝의 마모속도가 감소될 뿐만 아니라제동손실 및 차량유지비가 감소되는 효과가 있다.As described above, according to the present invention, the flow rate adjusting means for variably adjusting the cross-sectional area of the oil passage connecting the oil reservoir and the air master is installed to be controlled by the ECU, and the air master in the oil reservoir according to the driving state of the vehicle. By controlling the amount of oil supplied to the variable, the oil pressure of the brake generated during low-speed driving is reduced, thereby reducing the wear rate of the brake lining as well as reducing the braking loss and vehicle maintenance costs.

Claims (6)

휠속도센서(20)로부터 전달된 신호에 의해 차량의 주행속도를 판별하도록 된 ECU(30)와, 오일리저버(5)와 에어마스터(6)를 연결하는 오일통로(5a)상에 설치되어 상기 ECU(30)의 제어신호에 의해 오일통로(5a)의 단면적을 가변적으로 조절하도록 된 유량조절수단(40)이 구비된 자동차의 제동장치.It is installed on the ECU 30 to determine the traveling speed of the vehicle by the signal transmitted from the wheel speed sensor 20 and the oil passage 5a connecting the oil reservoir 5 and the air master 6 to the above. Braking apparatus for a vehicle provided with a flow rate control means 40 to variably adjust the cross-sectional area of the oil passage (5a) by the control signal of the ECU (30). 제 1항에 있어서, 상기 유량조절수단(40)이, 일측으로 개구되는 원형의 결합홈(41a)이 내부에 구비된 하우징(41)과, 일단이 상기 결합홈(41a)의 안쪽에 회동가능하도록 결합되고 타단이 상기 오일통로(5a)내에 위치되도록 설치되는 회전바아(42)와, 이 회전바아(42)의 단부에 일체로 형성되어 상기 오일통로(5a)의 단면적을 가변적으로 조절하도록 된 단면적조절판(43)과, 상기 회전바아(42)의 외주면에 감겨져 ECU(30)의 제어신호에 의해 인가되는 가변저항을 이용해 상기 회전바아(42)를 일방향으로 회전시켜 주도록 된 코일(44)로 이루어진 것을 특징으로 하는 자동차의 제동장치.According to claim 1, wherein the flow rate control means 40, the housing 41 is provided with a circular coupling groove (41a) that is open to one side and one end is rotatable inside the coupling groove (41a) Rotating bar 42 and the other end is installed so as to be positioned in the oil passage (5a), and integrally formed at the end of the rotary bar 42 to variably control the cross-sectional area of the oil passage (5a) The coil 44 is configured to rotate the rotary bar 42 in one direction by using a sectional area control plate 43 and a variable resistor wound around the outer circumferential surface of the rotary bar 42 and applied by a control signal of the ECU 30. Braking apparatus for a vehicle, characterized in that made. 제 2항에 있어서, 상기 회전바아(42)에는, 상기 회전바아(42)에 감겨지며 양단이 하우징(41)과 회전바아(42)에 각각 결합되어 회전바아(42)의 설치위치를 고정시켜주면서 상기 ECU(30)의 제어신호에 의해 인가되는 전원이 단락될 때 일방향으로 회전된 회전바아(42)를 타방향으로 회전시켜 탄성복원시키도록 된리턴스프링(45)이 구비된 것을 특징으로 하는 자동차의 제동장치.The rotating bar 42 is wound around the rotating bar 42, and both ends thereof are coupled to the housing 41 and the rotating bar 42 to fix the installation position of the rotating bar 42. When the power applied by the control signal of the ECU 30 is short-circuited, the return spring 45 is configured to elastically restore by rotating the rotation bar 42 rotated in one direction in the other direction. Braking system of automobiles. 제 1항에 있어서, 상기 에어마스터(6)로 압축공기를 공급하기 위한 수단이 대기압상태의 공기를 압축시키도록 된 에어컴프레서(1)와, 압축공기내의 수분을 제거하도록 된 에어드라이(2)와, 압축공기를 저장하도록 된 에어탱크(3)와, 운전자의 답력에 따라 개폐되면서 상기 에어탱크(3)내에 저장된 압축공기를 전달시켜주도록 된 브레이크밸브(4)로 이루어진 것을 특징으로 하는 자동차의 제동장치.2. An air compressor (1) according to claim 1, wherein means for supplying compressed air to said air master (6) is adapted to compress air at atmospheric pressure, and an air dryer (2) adapted to remove moisture in the compressed air. And a brake valve 4 configured to deliver compressed air stored in the air tank 3 while being opened and closed according to the driver's stepping force. Braking system. 제 1항에 있어서, 상기 에어마스터(6)로 브레이크 오일을 공급시켜 주기 위한 수단이 상기 에어마스터(6)와 오일통로(5a)를 매개로 연결되는 오일리저버(5)와, 상기 휠속도센서(20)로부터 전달되는 차량의 주행속도를 판별하도록 된 ECU(30)와, 상기 오일통로(5a)상에 설치되어 ECU(30)의 제어신호에 의해 오일통로(5a)의 단면적을 가변적으로 조절하도록 된 유량조절수단(40)으로 이루어진 것을 특징으로 하는 자동차의 제동장치.2. An oil reservoir (5) according to claim 1, wherein means for supplying brake oil to the air master (6) comprises an oil reservoir (5) connected to the air master (6) and an oil passage (5a), and the wheel speed sensor. The ECU 30 configured to determine the traveling speed of the vehicle transmitted from the vehicle 20 and the oil passage 5a are installed on the oil passage 5a to variably adjust the cross-sectional area of the oil passage 5a by the control signal of the ECU 30. Braking apparatus for a vehicle, characterized in that made of a flow rate control means (40). 제 1항에 있어서, 상기 에어마스터(6)가 공기압을 오일압으로 변환시키면서 휠실린더(7)로 제동압을 전달하여 차량의 주행속도에 상응하는 제동력을 발생시키도록 된 자동차의 제동장치.2. The braking device of claim 1, wherein the air master (6) transmits the braking pressure to the wheel cylinder (7) while converting the air pressure into oil pressure to generate a braking force corresponding to the traveling speed of the vehicle.
KR10-2000-0084416A 2000-12-28 2000-12-28 brake system of vehicle KR100383998B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116394891A (en) * 2023-04-06 2023-07-07 徐州淮海新能源汽车有限公司 Brake structure for new energy automobile

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KR970017497U (en) * 1995-10-18 1997-05-23 Proportioning valve automatic control of vehicle brake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116394891A (en) * 2023-04-06 2023-07-07 徐州淮海新能源汽车有限公司 Brake structure for new energy automobile
CN116394891B (en) * 2023-04-06 2023-09-22 徐州淮海新能源汽车有限公司 Brake structure for new energy automobile

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