KR100384001B1 - Apparatus for reducing speed of car in the system for controlling a distance between vehicles - Google Patents
Apparatus for reducing speed of car in the system for controlling a distance between vehicles Download PDFInfo
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- KR100384001B1 KR100384001B1 KR10-2000-0085858A KR20000085858A KR100384001B1 KR 100384001 B1 KR100384001 B1 KR 100384001B1 KR 20000085858 A KR20000085858 A KR 20000085858A KR 100384001 B1 KR100384001 B1 KR 100384001B1
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- hydraulic
- pressure
- master cylinder
- valve
- accumulator
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Classifications
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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
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
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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
- B60T13/148—Arrangements for pressure supply
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
본 발명은 브레이크의 유압라인에 유압을 제어할 수 있는 유압모듈을 부가하여 차량의 감속을 제어하는 차량거리제어시스템용 감속장치에 관한 것이다.The present invention relates to a deceleration device for a vehicle distance control system for controlling a deceleration of a vehicle by adding a hydraulic module capable of controlling hydraulic pressure to a hydraulic line of a brake.
본 발명에 따른 차량거리제어시스템용 감속장치는 마스터 실린더(3)와 휠(5,6,7,8)에 장착되는 브레이크 실린더 사이에 유압제어장치(11)가 제공되며, 상기 유압제어장치(11)는 차량거리제어에 의해 제동이 시작될 때 마스터 실린더(3)와 브레이크 실린더의 연결을 해제하는 차단밸브(12, 13)와, ECU에 의해 작동이 제어되는 모터(M)와, 상기 모터(M)에 의해 구동되는 유압펌프(P)와, 상기 유압펌프(P)에서 발생한 압력을 저장하는 어큐뮬레이터(14)와, 마스터 실린더(3) 및 어큐물레이터(14)의 압력을 휠(5,6,7,8)의 브레이크 실린더로 균일하게 전달하기 위한 압력실(15)과, 상기 압력실(15)에서 마스터 실린더(3)의 리저버(4)로 배출되는 오일을 제어하는 유압배출제어밸브(16)와, 상기 어큐물레이터(14)에서 압력실(15)로 유입되는 압력을 제어하는 유압유입제어밸브(17,18)로 구성되는 것을 특징으로 한다.In the reduction device for a vehicle distance control system according to the present invention, a hydraulic control device 11 is provided between a master cylinder 3 and a brake cylinder mounted to wheels 5, 6, 7, and 8, and the hydraulic control device ( 11 is a shut-off valve (12, 13) for disconnecting the master cylinder (3) and the brake cylinder when the braking is started by the vehicle distance control, the motor (M) is controlled by the ECU and the motor ( The pressure of the hydraulic pump P driven by M), the accumulator 14 which stores the pressure generated by the hydraulic pump P, the master cylinder 3 and the accumulator 14, and the wheel 5, A pressure chamber 15 for uniformly transferring the brake cylinders 6, 7, 8, and a hydraulic discharge control valve for controlling oil discharged from the pressure chamber 15 to the reservoir 4 of the master cylinder 3. (16) and hydraulic inlet control valves (17, 18) for controlling the pressure flowing from the accumulator (14) into the pressure chamber (15). It is characterized in that the configuration.
Description
본 발명은 차량거리제어시스템용 감속장치에 관한 것으로 브레이크의 유압라인에 유압을 제어할 수 있는 유압모듈을 부가하여 차량의 감속을 제어하는 차량거리제어시스템용 감속장치에 관한 것이다.The present invention relates to a deceleration device for a vehicle distance control system and a deceleration device for a vehicle distance control system for controlling the deceleration of the vehicle by adding a hydraulic module capable of controlling the hydraulic pressure to the hydraulic line of the brake.
일반적으로 차량거리제어시스템에서 차량 감속을 위한 장치 중 그 대표적인 것은 안티브레이크시스템인 ABS로서, 이와 같은 ABS장착 차량은 선행차량의 발견에 따른 감속을 다단계로 수행하게 되는데 그 중, 대표적인 것이 브레이크시스템의 진공배력장치인 마스터실린더를 개조하여 전·후 차륜의 속도를 제어 즉, 운전자가 브레이크 페달을 밟으면 서지탱크의 진공과 대기압간의 압력차를 이용해 솔레노이드 밸브를 통해 ECU에서 감속도를 제어하여 제동력을 발생하는 시스템이 한 예 이다.In general, the vehicle deceleration system for the vehicle deceleration is the anti-rake system ABS, such as a vehicle equipped with ABS performs the deceleration in multiple stages according to the discovery of the preceding vehicle, the representative of the brake system The master cylinder, a vacuum booster, is modified to control the speed of the front and rear wheels.When the driver presses the brake pedal, the braking force is generated by controlling the deceleration in the ECU through the solenoid valve using the pressure difference between the vacuum and the atmospheric pressure of the surge tank. The system is one example.
그러나, 이와 같이 진공배력장치를 개조한 시스템은 일반적으로 반응속도가 느릴 뿐 만 아니라 서지탱크의 진공이 외부 환경요인에 의해 지배를 받기 때문에 일정한 제어를 기대하기가 어려운 단점이 있다.However, such a system in which the vacuum power supply system is modified is not only slow in reaction rate but also difficult to expect constant control because the vacuum of the surge tank is controlled by external environmental factors.
따라서, 이와 같은 진공배력장치의 개조에 따른 감속장치의 한계를 극복하기 위해 별도의 펌프와 여러 밸브로 이루어진 유압모듈을 ECU로 제어하여 빠른 반응속도를 얻도록 하는데, 이와 같은 시스템중 대표적인 것이 도 1에 도시된 바와 같이 브레이크폐달(100)의 조작력을 배력시키는 마스터실린더(300)에 전기식 2회로 타입으로 연결되어 축압기(500)에 고압을 공급하면서 브레이크 회로의 압력을 강화시켜야 할 경우 휠실린더의 브레이크액을 마스터실린더(300)로 펌핑하는 유압펌프(400)를 구비한 것을 예로 들 수 있게 된다.Therefore, in order to overcome the limitations of the deceleration device according to the modification of the vacuum powering device, a hydraulic pump consisting of a separate pump and several valves is controlled by the ECU to obtain a fast reaction speed. As shown in FIG. 2, when the electric pressure of the brake circuit is to be strengthened while supplying a high pressure to the accumulator 500, it is connected to the master cylinder 300 to increase the operating force of the brake pedal 100. For example, the hydraulic pump 400 pumping the brake fluid to the master cylinder 300 may be mentioned.
또한, 상기 전·후륜의 파이프라인에는 부분 제동시 휠실린더의 압력을 급속히 형성시키는 기능을 하는 흡입밸브(800)와 브레이크액이 축압기(500)를 통해 펌프로 흐르는 토출밸브(700)가 구비되는 한편, 전·후륜 파이프라인상에 유로를 절환하는 절환밸브(600)가 구비되어짐은 물론이다.In addition, the pipelines of the front and rear wheels are provided with a suction valve 800 that functions to rapidly form a pressure of the wheel cylinder during partial braking, and a discharge valve 700 in which brake fluid flows into the pump through the accumulator 500. On the other hand, it is a matter of course that the switching valve 600 for switching the flow path is provided on the front and rear wheel pipeline.
그러나, 이와 같은 펌프(400)에서 발생되어 전·후륜의 파이프라인상을 흐르는 유압을 고압으로 유지하여야 만하여 작동 시 소음과 진동이 발생되어 승차감을 저하시키는 한편, 전·후륜 파이프라인 상에 유로를 형성하는 밸브(600,700,800)들의 기계적인 오차로 인해 좌·우 바퀴에 동일한 제동력을 얻기가 어려운 단점이 있게 된다.However, the hydraulic pressure generated in such a pump 400 and flowing through the pipelines of the front and rear wheels must be maintained at a high pressure, so that noise and vibration are generated during operation, which lowers the riding comfort, and creates a flow path on the front and rear pipelines. Due to the mechanical error of the forming valves 600, 700, 800 it is difficult to obtain the same braking force on the left and right wheels.
또한, 이와 같은 고압생성에 따른 단점을 위해 유압펌프(400)와 이를 구동하기 위한 모터를 제어하여 저압을 발생시킬 수 있지만 이러한 경우, 전술한 바와 같은 제동 상황이 발생되면 저압을 즉시 고압으로 변환시켜야만 되어 이에 대한 제어가 매우 어려운 한계가 있게 된다.In addition, the low pressure may be generated by controlling the hydraulic pump 400 and the motor for driving the same for the disadvantages of the high pressure generation, but in this case, when the braking situation as described above occurs, the low pressure should be immediately converted to high pressure. As a result, there is a limit that is very difficult to control.
또한, 기계적인 오차에 따른 좌·우 바퀴의 제동력 차를 방지하려면 각 차륜으로 가는 유압을 피드백제어를 하여 달성할 수 있지만 이러한 경우, 이와 같은 피드백기능을 얻기 위해선 별도의 제어기법을 사용해야만 되어 이에 대한 제어가 매우 어려운 한계가 있음은 물론이다.In addition, in order to prevent the braking force difference of the left and right wheels due to mechanical error, the hydraulic pressure to each wheel can be achieved by feedback control, but in this case, a separate control method must be used to obtain such a feedback function. Of course, the control is very difficult limitations.
따라서, 본 발명의 목적은 마스터 실린더와 브레이크 실린더 사이에 유압제어장치를 제공하여 낮은 압력범위에서 브레이크 작용을 제어하여 빠르고 항상 일정한 차량 감속 제어를 구현할 수 있는 차량거리제어시스템용 감속장치를 제공하는데있다.Accordingly, an object of the present invention is to provide a deceleration device for a vehicle distance control system that can implement a fast and constant vehicle deceleration control by providing a hydraulic control device between the master cylinder and the brake cylinder to control the brake action in a low pressure range. .
상기와 같은 목적을 달성하기 위한 본 발명에 따른 차량거리제어시스템용 감속장치의 일예는 마스터 실린더와 휠에 장착되는 브레이크 실린더 사이에 유압제어장치가 제공된다.One example of a reduction device for a vehicle distance control system according to the present invention for achieving the above object is provided with a hydraulic control device between a master cylinder and a brake cylinder mounted to a wheel.
상기 유압제어장치는 최적주행제어에 의해 제동이 시작될 때 마스터 실린더와 브레이크 실린더의 연결을 해제하는 차단밸브와, ECU에 의해 작동이 제어되는 모터와, 상기 모터에 의해 구동되는 유압펌프와, 상기 유압펌프에서 발생한 압력을 저장하는 어큐뮬레이터와, 마스터 실린더 및 어큐물레이터의 압력을 휠의 브레이크 실린더로 균일하게 전달하기 위한 압력실과, 상기 압력실에서 마스터 실린더의 리저버로 배출되는 오일을 제어하는 유압배출제어밸브와, 상기 어큐물레이터에서 압력실로 유입되는 압력을 제어하는 유압유입제어밸브로 구성되는 것을 특징으로 한다.The hydraulic control device includes a shutoff valve for releasing the connection between the master cylinder and the brake cylinder when braking is started by optimum driving control, a motor controlled by the ECU, a hydraulic pump driven by the motor, and the hydraulic pressure. Accumulator for storing the pressure generated by the pump, pressure chamber for uniformly transmitting the pressure of the master cylinder and the accumulator to the brake cylinder of the wheel, and hydraulic discharge control for controlling the oil discharged from the pressure chamber to the reservoir of the master cylinder A valve and a hydraulic inlet control valve for controlling the pressure flowing from the accumulator to the pressure chamber is characterized in that the configuration.
상기 유압제어장치는 흡기 다기관에서 발생한 압력을 공급하는 배력공급수단가 상기 차단밸브의 배출파이프, 어큐물레이터의 배출파이프 및 제 2 유압유입제어밸브의 배출파이프에 각각 연결되고, 제 1 체크밸브가 제 1 배력공급수단의 연결관에 장착되고, 제 2 체크밸브가 마스터 실린더의 바이패스관에 장착되며, 제 3 및 제 4 체크밸브가 각각의 유압펌프의 배출구에 장착되어 유압의 역류를 방지하고, 제 5 및 제 6 체크밸브가 상기 유압펌프의 유입구에 각각 장착되는 것을 특징으로 한다.The hydraulic control device has a power supply means for supplying the pressure generated in the intake manifold is connected to the discharge pipe of the shut-off valve, the discharge pipe of the accumulator and the discharge pipe of the second hydraulic inlet control valve, respectively, It is mounted on the connecting pipe of the first power supply means, the second check valve is mounted on the bypass pipe of the master cylinder, and the third and fourth check valves are mounted on the outlet of each hydraulic pump to prevent the back flow of hydraulic pressure, The fifth and sixth check valves are mounted to the inlets of the hydraulic pump, respectively.
이러한 구성에 의해, 상기 유압제어장치는 운전자에 의하여 발생된 마스터실린더의 압력이 차간거리제어에 의하여 발생한 압력보다 클 경우, 제 1 차단밸브와, 제 2 차단밸브를 바이패스하는 2개의 체크밸브를 통하여 압력을 휠의 브레이크 실린더로 직접 공급할 수 있는 것을 특징으로 한다.By such a configuration, the hydraulic control device is provided with two check valves bypassing the first shut-off valve and the second shut-off valve when the pressure of the master cylinder generated by the driver is greater than the pressure generated by the inter-vehicle distance control. It is characterized in that the pressure can be supplied directly to the brake cylinder of the wheel through.
이하 첨부 도면을 참조하여 상세하게 설명하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail.
도 1은 종래에 따른 차량거리제어시스템용 감속장치를 도시한 회로도1 is a circuit diagram showing a reduction device for a vehicle distance control system according to the prior art
도 2는 본 발명에 따른 차량거리제어시스템용 감속장치를 도시한 회로도2 is a circuit diagram showing a speed reduction device for a vehicle distance control system according to the present invention.
*도면의 주요부분에 대한 부호설명** Description of Signs of Main Parts of Drawings *
1 : 브레이크 페달 3 : 마스터 실린더1: brake pedal 3: master cylinder
4 : 리저버 5, 6, 7, 8 : 휠4: reservoir 5, 6, 7, 8: wheel
11 : 유압제어장치 12, 13 : 차단밸브11: hydraulic control device 12, 13: shut-off valve
14 : 어큐물레이터 15 : 압력실14 accumulator 15 pressure chamber
16 : 유압배출제어밸브 17, 18 : 유압유입제어밸브16: hydraulic discharge control valve 17, 18: hydraulic inlet control valve
25, 26, 27 : 배력공급수단25, 26, 27: power supply means
31, 32, 33, 34, 35, 36 : 체크밸브31, 32, 33, 34, 35, 36: check valve
도 2를 참조하면, 본 발명에 따른 차량거리제어시스템용 감속장치는 마스터 실린더(3)와 휠(5,6,7,8)에 장착되는 브레이크 실린더(도시하지 않음) 사이에 유압제어장치(11)가 제공된다.2, the speed reduction device for a vehicle distance control system according to the present invention is a hydraulic control device (not shown) between the master cylinder (3) and the brake cylinder (not shown) mounted to the wheels (5, 6, 7, and 8). 11) is provided.
상기 유압제어장치(11)는 최적주행제어에 의해 제동이 시작될 때 마스터 실린더(3)와 브레이크 실린더의 연결을 해제하는 차단밸브(12, 13)와, ECU(도시하지 않음)에 의해 작동이 제어되는 모터(M)와, 상기 모터(M)에 의해 구동되는 유압펌프(P)와, 상기 유압펌프(P)에서 발생한 압력을 저장하는 어큐뮬레이터(14 ; accumlator)와, 마스터 실린더(3) 및 어큐물레이터(14)의 압력을 휠(5,6,7,8)의 브레이크 실린더로 균일하게 전달하기 위한 압력실(15)과, 상기 압력실(15)에서 마스터 실린더(3)의 리저버(4)로 배출되는 오일을 제어하는 유압배출제어밸브(16)와, 상기 어큐물레이터(14)에서 압력실(15)로 유입되는 압력을 제어하는 유압유입제어밸브(17,18)로 구성된다.The hydraulic control device 11 is controlled by the ECU (not shown) and the shut-off valves 12 and 13 for releasing the connection between the master cylinder 3 and the brake cylinder when braking is started by optimum running control. The motor M, the hydraulic pump P driven by the motor M, the accumulator 14 for storing the pressure generated by the hydraulic pump P, the master cylinder 3 and the A pressure chamber 15 for uniformly transferring the pressure of the cumulator 14 to the brake cylinders of the wheels 5, 6, 7, and 8, and a reservoir 4 of the master cylinder 3 in the pressure chamber 15; Hydraulic discharge control valve 16 for controlling the oil discharged to the) and hydraulic inlet control valve (17, 18) for controlling the pressure flowing from the accumulator 14 to the pressure chamber (15).
또한, 상기 유압제어장치(11)는 흡기 다기관(도시하지 않음)에서 발생한 압력을 공급하는 배력공급수단(25, 26, 27)가 상기 차단밸브(12, 13)의 배출파이프(P1), 어큐물레이터(14)의 배출파이프(P2) 및 제 2유압유입제어밸브(17)의 배출파이프(P3)에 각각 연결되고, 제 1 체크밸브(31)가 제 1 배력공급수단(25)의 연결관에 장착되고, 제 2 체크밸브(31)가 마스터 실린더(3)의 바이패스관(P4)에 장착되며, 제 3 및 제 4 체크밸브(33, 34)가 각각의 유압펌프(P)의 배출구에 장착되고, 제 5 및 제 6 체크밸브(35, 36)가 상기 유압펌프(P)의 유입구에 각각 장착되어 유압의 역류를 방지하고 유압이 일방향으로만 흐르게 한다.In addition, the hydraulic control device 11 has a power supply means 25, 26, 27 for supplying the pressure generated in the intake manifold (not shown), the discharge pipe (P1) of the shut-off valves (12, 13), It is connected to the discharge pipe P2 of the cumulator 14 and the discharge pipe P3 of the second hydraulic inflow control valve 17, respectively, and the first check valve 31 is connected to the first power supply means 25. The second check valve 31 is mounted to the bypass pipe P4 of the master cylinder 3, and the third and fourth check valves 33 and 34 are connected to the respective hydraulic pumps P. Mounted at the outlet, fifth and sixth check valves (35, 36) are mounted at the inlet of the hydraulic pump (P), respectively, to prevent the reverse flow of the hydraulic and to flow the hydraulic only in one direction.
이러한 구성에 의해, 운전자에 의하여 발생된 마스터 실린더의 압력이 차간거리제어에 의하여 발생한 압력보다 클 경우, 상기 유압제어장치(11)는 제 1 차단밸브(12)와, 제 2 차단밸브(13)를 바이패스하는 체크밸브(31, 32)를 통하여 압력을 휠(5, 6, 7, 8)의 브레이크 실린더로 직접 공급할 수 있다.With this configuration, when the pressure of the master cylinder generated by the driver is greater than the pressure generated by the inter-vehicle distance control, the hydraulic control device 11 includes the first shut-off valve 12 and the second shut-off valve 13. The pressure can be directly supplied to the brake cylinders of the wheels 5, 6, 7, and 8 through the check valves 31 and 32 bypassing the pressure.
상기와 같이 구성된 차량거리제어시스템용 감속장치는 다음과 같이 작동한다.The reduction device for a vehicle distance control system configured as described above operates as follows.
최적주행제어 시스템이 작동하지 않을 때 운전자가 브레이크 페달(1)을 밟으면. 마스터 실린더(3)의 오일이 휠(5, 6, 7, 8)의 브레이크 실린더로 유입되어 제동되고, 제동이 해제되면 리턴 스프링(도시하지 않음)의 탄성력에 의해 브레이크 실린더의 오일이 마스터 실린더(3)의 리저버(4)로 유입된다. 이 때 제 1 및 제 2 배력공급수단(25, 26)에 의해 압력이 압력실로 공급된다.If the driver presses the brake pedal (1) when the optimum drive control system is not operating. The oil of the master cylinder 3 flows into the brake cylinders of the wheels 5, 6, 7, 8, and brakes. When the braking is released, the oil of the brake cylinder is driven by the elastic force of the return spring (not shown). It flows into the reservoir 4 of 3). At this time, pressure is supplied to the pressure chamber by the first and second power supply means 25 and 26.
그리고, 차량거리제어시스템 작동에 의한 감속은 ECU에 의해 모터(M) 및 유압펌프(P)가 작동되면 이것에 의해 발생한 압력이 어큐물레이터(14)에 저장된 후 일정압력 이상에 도달하면 제 2 유압유입제어밸브(17)가 개방되고 그 후 제 1 유압유입제어밸브(18)가 개방되어 상기 제 1 유압유입제어밸브(18)에서 압력실(15)로 배출되는 유압이 선형적으로 증가하여, 상기 압력실(15)로 유입된다. 이와같이 유입된 압력은 각각의 휠(5,6,7,8)에 장착된 브레이크 실린더로 균일하게 공급되어 각각의 휠(5,6,7,8)이 제동된다. 이 때 상기 유압펌프(P)에서 밸생한 압력은 제 3 , 4, 5, 6 체크밸브(33, 34, 35, 36)에 의해 일방향으로 흐르게 되고, 제 3 배력공급수단(27)이 작동하여 어큐물레이터(14)에서 압력실(15)로 공급되는 압력을 증가시킨다. 그 후 휠(5,6,7,8)의 제동이 해제되면 유압이 다시 압력실(15)로 리턴된 후 유압배출제어밸브(16)를 통해 선형적으로 유압펌프(P)로 리턴된다.When the motor M and the hydraulic pump P are operated by the ECU, the deceleration by the operation of the vehicle distance control system is performed when the pressure generated by the vehicle is stored in the accumulator 14 and reaches a predetermined pressure or more. The hydraulic inflow control valve 17 is opened, and then the first hydraulic inflow control valve 18 is opened to linearly increase the hydraulic pressure discharged from the first hydraulic inflow control valve 18 to the pressure chamber 15. And flows into the pressure chamber 15. The pressure introduced in this way is uniformly supplied to the brake cylinders mounted on the respective wheels 5, 6, 7, and 8, and the respective wheels 5, 6, 7, and 8 are braked. At this time, the pressure generated by the hydraulic pump (P) flows in one direction by the third, fourth, fifth, and sixth check valves 33, 34, 35, and 36, and the third power supply means 27 operates. The pressure supplied from the accumulator 14 to the pressure chamber 15 is increased. Then, when the braking of the wheels 5, 6, 7, and 8 is released, the hydraulic pressure is returned to the pressure chamber 15 and then linearly returned to the hydraulic pump P through the hydraulic discharge control valve 16.
차량거리제어시스템 작동의 작동하에서 운전자가 브레이크 패달(1)을 밟으면 마스터 실린더(3)의 유압이 체크밸브(32)를 통해 압력실(15)로 공급되고, 이와 동시에 제 1, 제 2 및 제 3 배력공급수단(25, 26, 27)이 작동하여 압력실(15)로 공급되는 압력을 증가시킨다.When the driver steps on the brake pedal 1 under the operation of the vehicle distance control system operation, the hydraulic pressure of the master cylinder 3 is supplied to the pressure chamber 15 through the check valve 32, and at the same time, the first, second, and first 3 The power supply means 25, 26, 27 operate to increase the pressure supplied to the pressure chamber 15.
상기와 같이 구성되고 작동하는 본 발명에 따른 차량거리제어시스템용 감속장치는 ABS/TCS 시스템을 사용할 때보다 낮은 압력범위에서 브레이크를 제어하게 되므로 소음 및 진동이 감소하여 승차감을 저해하지 않으며, 압력실에서 좌우 자동차 휠로 동일한 브레이크 압력을 전달하기 때문에 제어가 간단하며, 브레이크 실린더의 유입라인에 설치되므로 ABS/TCS 시스템이 장착되어 있어도 별도로 동작이 가능하여 브레이크의 사양에 관계없이 유압제어장치를 설치할 수 있는 효과가 있다.Reduction device for a vehicle distance control system according to the present invention configured and operated as described above is to control the brake in a lower pressure range than when using the ABS / TCS system, so that noise and vibration is reduced, do not impair the ride comfort, pressure chamber It is easy to control because it transmits the same brake pressure to the left and right car wheels, and it is installed in the inflow line of the brake cylinder, so it can be operated separately even if the ABS / TCS system is installed. It works.
Claims (3)
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002185A1 (en) * | 1995-06-30 | 1997-01-23 | The Procter & Gamble Company | A shipping unit comprising rigidified containers |
| WO1997004595A1 (en) * | 1995-07-21 | 1997-02-06 | Starsight Telecast, Incorporated | Automatic time set in a television system |
| KR19980056935A (en) * | 1996-12-30 | 1998-09-25 | 오상수 | Brake Pressure Control Device of Vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002185A1 (en) * | 1995-06-30 | 1997-01-23 | The Procter & Gamble Company | A shipping unit comprising rigidified containers |
| WO1997004595A1 (en) * | 1995-07-21 | 1997-02-06 | Starsight Telecast, Incorporated | Automatic time set in a television system |
| KR19980056935A (en) * | 1996-12-30 | 1998-09-25 | 오상수 | Brake Pressure Control Device of Vehicle |
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