KR100428160B1 - Dual vacuum generating system of brake system in diesel car - Google Patents
Dual vacuum generating system of brake system in diesel car Download PDFInfo
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- KR100428160B1 KR100428160B1 KR10-2001-0067799A KR20010067799A KR100428160B1 KR 100428160 B1 KR100428160 B1 KR 100428160B1 KR 20010067799 A KR20010067799 A KR 20010067799A KR 100428160 B1 KR100428160 B1 KR 100428160B1
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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
- B60T13/10—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
- B60T13/46—Vacuum 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
- 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
- B60T13/02—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 mechanical assistance or drive
- B60T13/06—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 mechanical assistance or drive by inertia, e.g. flywheel
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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
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/43—Engines
- B60Y2400/432—Diesel Engines
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- 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)
- Valves And Accessory Devices For Braking Systems (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
본 발명은 디젤 차량용 브레이크시스템의 이중진공발생수단에 관한 것으로, 엔진의 회전력을 전달하는 벨트의 이상 시 전기 모터를 이용해 진공펌프를 작동시켜 주행 중인 차량의 부압 미 발생에 의한 차량의 제어 불능을 방지함에 그 목적이 있다.The present invention relates to a double vacuum generating means of a brake system for a diesel vehicle, and to prevent the inability to control the vehicle due to the occurrence of negative pressure of the running vehicle by operating a vacuum pump by using an electric motor when a belt that transmits the rotational force of the engine. The purpose is to.
상기와 같은 목적을 달성하기 위한 본 발명은, 엔진(10)의 크랭크샤프트풀리(C)에 벨트(11)를 매개로 회전력을 전달받아 작동되는 진공펌프(13)와, 이 진공펌프(13)에서 발생된 부압을 파이프(14)를 통해 전달받아 마스터실린더나 조향장치의 배력장치를 작동하는 부스터(15) 및 상기 진공펌프(13)의 회전여부에 따라 차량에 탑재된 배터리의 전원을 통전시켜 주는 보조구동수단(20)으로 이루어진 것을 특징으로 한다.The present invention for achieving the above object, the vacuum pump 13 is operated by receiving a rotational force via the belt 11 to the crankshaft pulley (C) of the engine 10 and the vacuum pump 13 The negative pressure generated by the pipe 14 is transmitted through the booster 15 for operating the booster of the master cylinder or steering device and the power of the battery mounted on the vehicle according to whether the vacuum pump 13 is rotated. It is characterized by consisting of the auxiliary drive means (20).
Description
본 발명은 디젤 차량용 브레이크시스템의 이중진공발생수단에 관한 것으로, 보다 상세하게는 엔진의 동력을 전달하는 벨트의 끊김 시에도 브레이크작동에 필요한 진공을 발생할 수 있도록 된 디젤 차량용 브레이크시스템의 이중진공발생수단에 관한 것이다.The present invention relates to a double vacuum generating means of a brake system for a diesel vehicle, and more particularly, to a double vacuum generating means of a brake system for a diesel vehicle that is capable of generating a vacuum required for brake operation even when the belt for transmitting the power of the engine is broken. It is about.
일반적으로 디젤 엔진은 공기를 흡입하고 이를 15∼23배 정도로 압축한 후에 경유를 높은 압력으로 분사하여 자연 발화되는 현상을 이용하고 있다. 즉, 고압으로 압축된 실린더에 연료를 직접 압축하기 위해 연료분사펌프의 노즐이 실린더에 직접 설치되어 있음으로 가솔린 엔진에서와 같이 흡입매니폴드 또는 서지탱크가 존재하지 않는 특성이 있게된다.In general, a diesel engine utilizes a phenomenon of spontaneous ignition by injecting air and compressing it about 15 to 23 times and then spraying diesel oil at a high pressure. That is, since the nozzle of the fuel injection pump is directly installed in the cylinder to directly compress the fuel in the cylinder compressed at high pressure, there is a characteristic that there is no suction manifold or surge tank as in a gasoline engine.
이에 따라, 디젤엔진 차량의 경우에는 도 1에 도시된 바와 같이 브레이크나 조향핸들의 배력수단으로 사용되는 진공챔버인 부스터(15)에 부압을 공급하기 위해 통상, 엔진(10)과 연동하는 크랭크샤프트풀리(C)에 벨트(11)를 매개로 연결되어 회전되는 얼티네이터(12)의 회전축 일단에 장착된 진공펌프(13)에서 발생된 부압을 파이프(14)를 통해 공급하도록 구성되어진다.Accordingly, in the case of a diesel engine vehicle, as shown in FIG. 1, a crankshaft which is generally interlocked with the engine 10 to supply a negative pressure to the booster 15, which is a vacuum chamber used as a boosting means of a brake or steering wheel. It is configured to supply the negative pressure generated by the vacuum pump 13 mounted on one end of the rotating shaft of the alternator 12 connected to the pulley C via the belt 11 via the pipe 14.
그러나, 이와 같이 엔진의 작동 시 함께 작동되는 얼티네이터(12)를 매개로 그 회전력을 이용해 부압을 발생시키게 되면, 엔진의 작동 중에는 항상 작동됨으로서 엔진의 작동중에는 브레이크나 조향핸들의 사용에 문제가 없지만, 상기 얼티네이터(12)가 고장이나 벨트(11)의 이상(끊어짐이나 이탈)이 발생되면 부압을 발생시킬 수 가 없어 주행중인 차량의 제동이나 조향 작동을 제어하지 못하는 문제가 있게 된다.However, if the negative pressure is generated using the rotational force through the alternator 12 which is operated together during operation of the engine as described above, it is always operated during the operation of the engine, so there is no problem in the use of the brake or steering wheel during operation of the engine. When the alternator 12 fails or an abnormality (break or breakage) of the belt 11 occurs, negative pressure cannot be generated, and thus the braking or steering operation of the running vehicle cannot be controlled.
이에 본 발명은 상기와 같은 점을 감안하여 발명된 것으로, 엔진의 회전력을 전달하는 벨트의 이상 시 전기 모터를 이용해 진공펌프를 작동시켜 주행 중인 차량의 부압 미 발생에 의한 차량의 제어 불능을 방지함에 그 목적이 있다.Accordingly, the present invention has been made in view of the above-described problems, and in the event of an abnormality in the belt that transmits the rotational force of the engine, the vacuum pump is operated using an electric motor to prevent the inability to control the vehicle due to the occurrence of negative pressure of the running vehicle. The purpose is.
상기와 같은 목적을 달성하기 위한 본 발명은, 엔진의 크랭크샤프트풀리에 벨트를 매개로 회전력을 전달받아 작동되는 진공펌프와, 이 진공펌프에서 발생된 부압을 파이프를 통해 전달받아 마스터실린더나 조향장치의 배력장치를 작동하는 부스터 및 상기 진공펌프의 회전여부에 따라 차량에 탑재된 배터리의 전원을 통전시켜 주는 보조구동수단으로 이루어지되,상기 보조구동수단은 벨트에 의해 회전되는 진공펌프의 축상에 결합되어 벨트를 통해 진공펌프의 회전여부에 대한 주기적인 신호를 발생시켜 벨트를 통한 회전 미 전달시 강제적으로 진공펌프를 구동시키는 전기 모터와,이 모터가 결합된 진공펌프축의 회전여부에 따라 온·오프되어 베터리의 전원을 통전시키는 릴레이 및이 릴레이를 온·오프시키도록 상기 진공펌프와 엔진의 작동 시 회전되는 플라이휠의 회전여부를 감지하는 콘트롤러로 이루어진 것을 특징으로 한다.The present invention for achieving the above object, a vacuum pump which is operated by receiving a rotational force through the belt to the crankshaft pulley of the engine, and receives a negative pressure generated by the vacuum pump through a pipe to the master cylinder or steering device It consists of a booster for operating the boosting device and the auxiliary drive means for energizing the power of the battery mounted on the vehicle according to whether the vacuum pump is rotated, the auxiliary drive means is coupled to the shaft of the vacuum pump rotated by the belt And generates a periodic signal about whether the vacuum pump is rotated through the belt to force the vacuum pump to be driven when the rotation is not transmitted through the belt, and on or off depending on the rotation of the vacuum pump shaft to which the motor is coupled. Relay to energize the battery and turn on / off the relay during operation of the vacuum pump and engine. It is characterized by consisting of a controller for detecting whether the flywheel is transmitted.
도 1은 종래에 따른 디젤 차량용 브레이크시스템의 진공발생수단 구성도1 is a block diagram of a vacuum generating means of a brake system for a diesel vehicle according to the prior art
도 2는 본 발명에 따른 디젤 차량용 브레이크시스템의 이중진공발생수단 구성도Figure 2 is a configuration diagram of the double vacuum generating means of the brake system for a diesel vehicle according to the present invention
도 3은 도 2의 진공펌프와 연관된 전기모터의 구성도3 is a configuration diagram of an electric motor associated with the vacuum pump of FIG.
도 4는 본 발명에 따른 이중진공발생수단의 정상적인 작동 상태도Figure 4 is a normal operating state of the double vacuum generating means according to the present invention
도 5는 본 발명에 따른 보조 진공발생수단의 작동 상태도5 is an operational state diagram of the auxiliary vacuum generating means according to the present invention
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
10 : 엔진 11 : 벨트10 engine 11: belt
12 : 얼티네이터 13 : 진공펌프12: Aligner 13: vacuum pump
13a : 풀리 14 : 파이프13a: Pulley 14: Pipe
15 : 부스터 20 : 보조구동수단15: booster 20: auxiliary driving means
21 : 모터 21a : 구동부21: motor 21a: drive unit
21b : 회전축 21c : 회전플레이트21b: rotating shaft 21c: rotating plate
21d : 센서 22 : 릴레이21d: sensor 22: relay
23 : 콘트롤러23 controller
C : 크랭크샤프트풀리 F : 플라이휘일C: Crankshaft Pulley F: Flywheel
이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 디젤 차량용 브레이크시스템의 이중진공발생수단 구성도를 도시한 것인바, 본 발명은 엔진(10)의 크랭크샤프트풀리(C)에 벨트(11)를 매개로 회전력을 전달받아 작동되는 진공펌프(13)와, 이 진공펌프(13)에서 발생된 부압을 파이프(14)를 통해 전달받아 마스터실린더나 조향장치의 배력장치를 작동하는 부스터(15) 및 상기 진공펌프(13)의 회전여부에 따라 차량에 탑재된 배터리의 전원을 통전시켜 주는 보조구동수단(20)으로 이루어진다.Figure 2 shows a configuration diagram of the dual vacuum generating means of the brake system for a diesel vehicle according to the present invention, the present invention receives a rotational force transmitted through the belt 11 to the crankshaft pulley (C) of the engine 10 The booster 15 and the vacuum pump 13 which operate the vacuum pump 13 to be operated and the negative pressure generated by the vacuum pump 13 through the pipe 14 to operate the booster of the master cylinder or the steering system. It consists of an auxiliary drive means 20 for energizing the power of the battery mounted on the vehicle according to the rotation.
여기서, 상기 보조구동수단(20)은 벨트(11)에 의해 회전되는 진공펌프(13)의 축상에 결합된 전기 모터(21)와, 이 모터(21)가 결합된 진공펌프(13)축의 회전여부에 따라 온(On)·오프(Off)되어 베터리의 전원을 통전시키는 릴레이(22) 및 이 릴레이(22)를 온·오프시키도록 상기 진공펌프(13)와 엔진의 작동 시 회전되는 플라이휠(F)의 회전여부를 감지하는 콘트롤러(23)로 이루어진다.Here, the auxiliary driving means 20 is the electric motor 21 coupled to the shaft of the vacuum pump 13 that is rotated by the belt 11 and the rotation of the shaft of the vacuum pump 13 to which the motor 21 is coupled A relay 22 that is turned on or off depending on whether the battery is energized and a flywheel that is rotated when the vacuum pump 13 and the engine are operated to turn the relay 22 on and off ( F) consists of a controller 23 for detecting the rotation.
한편, 상기 전기모터(21)는 도 3에 도시된 바와 같이 진공펌프(13)를 회전시키는 풀리(13a)의 반대 축 상에 결합되어 공급된 전원을 매개로 구동력을 발생하는 구동부(21a)와, 이 구동부(21a)의 구동력을 진공펌프(13)의 축상으로 전달하도록 서로 연결된 회전축(21b), 이 회전축(21b)이 결합된 진공펌프(13)의 축상에 구비되어 회전되는 회전플레이트(21c) 및 이 회전플레이트(21c)의 회전여부를 감지하여 주기적인 신호를 발생해 콘트롤러(23)로 전달하는 마그네틱 센서(21d)로 이루어진다.On the other hand, the electric motor 21 is coupled to the opposite shaft of the pulley (13a) for rotating the vacuum pump 13, as shown in Figure 3 drive unit 21a for generating a driving force through the supplied power; Rotating shaft 21b connected to each other so as to transfer the driving force of the driving unit 21a to the shaft of the vacuum pump 13, and the rotating plate 21c provided and rotated on the shaft of the vacuum pump 13 to which the rotating shaft 21b is coupled. ) And a magnetic sensor 21d that detects whether the rotating plate 21c is rotated, generates a periodic signal, and transmits the periodic signal to the controller 23.
이하 본 발명의 작동을 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.
본 발명은 엔진의 작동에 따라 엔진의 회전력을 전달하는 벨트(11)의 정상적인 구동시에는 즉, 도 4에 도시된 바와 같이 엔진(10)에 의해 회전된느 크랭크샤프트풀리(C)에 벨트(11)를 매개로 연결된 진공펌프(13)의 풀리(13a)가 회전되고, 이에 따라 상기 진공펌프(13)에서 부압을 형성해 파이프(14)를 통해 부스터(15)로 충분한 부압을 공급하게 되므로 조향장치나 특히, 브레이크의 제동 시 유압을 발생하는 마스터실린더가 작동에 아무런 문제없이 정상적으로 반응하게 된다.According to the present invention, when the belt 11 transmits the rotational force of the engine according to the operation of the engine, that is, the belt (crank shaft pulley C) rotated by the engine 10 as shown in FIG. The pulley 13a of the vacuum pump 13 connected through 11 is rotated, thereby forming a negative pressure in the vacuum pump 13 to supply sufficient negative pressure to the booster 15 through the pipe 14. The master cylinder, which generates hydraulic pressure during braking of the device or, in particular, will react normally without any problems in operation.
이때, 상기 벨트(11)를 매개로 회전되는 진공펌프(13)에 연결된 모터(21)는 회전축(21b)이 자유 회전되는 한편, 상기 진공펌프(13)의 회전축 상에 구비된 회전플레이트(21c)의 회전여부를 감지하는 센서(21d)가 콘트롤러(23)로 지속적인 신호를 보내게 되는데 이에 따라, 상기 콘트롤러(23)는 진공펌프(13)가 벨트(11)를 매개로 작동됨을 인지하여 전기모터(21)와 배터리사이에 구비된 릴레이(22)를 오프(Off)상태로 유지시키게 된다.At this time, the motor 21 connected to the vacuum pump 13 rotated through the belt 11 has a rotating shaft 21b freely rotated, while the rotating plate 21c provided on the rotating shaft of the vacuum pump 13. Sensor 21d to detect whether the rotation of the ()) sends a continuous signal to the controller 23, accordingly, the controller 23 recognizes that the vacuum pump 13 is operated via the belt 11 The relay 22 provided between the motor 21 and the battery is kept in an off state.
한편, 엔진(10)의 회전력을 진공펌프(13)로 전달하는 벨트(11)가 이상상태 예를 들어, 끊어지거나 또는 풀리(13a)에서 이탈되면, 도 5에 도시된 바와 같이 진공펌프(13)가 벨트(11)를 매개로 회전되지 못하게 되는데 이때, 상기 진공펌프(13)의 축상에 구비된 회전플레이트(21c)도 풀리(13a)와 함께 회전되지 못하게 되므로 이 회전플레이트(21c)의 회전여부를 감지하는 센서(21d)가 콘트롤러(23)로 아무런 신호를 전송하지 않게 된다.On the other hand, if the belt 11 for transmitting the rotational force of the engine 10 to the vacuum pump 13 is in an abnormal state, for example, broken or detached from the pulley 13a, the vacuum pump 13 as shown in FIG. ) Is not rotated through the belt 11, at this time, the rotation plate 21c provided on the shaft of the vacuum pump 13 also does not rotate with the pulley (13a), the rotation of the rotation plate 21c The sensor 21d detecting whether or not does not transmit any signal to the controller 23.
이와 같이, 상기 콘트롤러(23)가 센서(21d)로부터 아무런 신호를 받지 못하게 되면, 상기 콘트롤러(23)는 진공펌프(13)가 작동되지 않는 것으로 인식하게 되고 이에 따라, 상기 콘트롤러(23)는 모터(21)를 구동시키기 위해 릴레이(22)로 제어신호를 보내 릴레이(22)를 온(On)시키면 배터리의 전원이 릴레이(22)를 통해 모터(21)로 통전되도록 전원회로를 형성하게 된다.As such, when the controller 23 does not receive any signal from the sensor 21d, the controller 23 recognizes that the vacuum pump 13 is not operated, and thus, the controller 23 has a motor. When the relay 22 is turned on by sending a control signal to the relay 22 to drive 21, a power supply circuit is formed such that the power of the battery is energized to the motor 21 through the relay 22.
이에 따라, 상기 모터(21)가 배터리의 전원을 이용해 회전축(21b)이 회전하게 되어, 이 회전축(21b)에 연결된 진공펌프(13)의 축이 함께 회전되면서 부압을 생성해 전술한 바와 같이 부스터(15)에 부압을 공급해 브레이크등의 배력장치의 작동을 정상적으로 유지시켜주게 된다.Accordingly, the motor 21 rotates the rotating shaft 21b using the power of the battery, and the negative pressure is generated while the shaft of the vacuum pump 13 connected to the rotating shaft 21b rotates together to generate a negative pressure as described above. Negative pressure is supplied to (15) to maintain normal operation of the booster system such as brakes.
이때, 상기 콘트롤러(23)는 센서(21d)의 신호 값이 거의 없어 벨트(11)를 통한 진공펌프(13)의 회전이 발생되지 않는다고 판단되면, 엔진의 정지 시까지 릴레이(22)를 온 시키게 됨은 물론이다.At this time, when it is determined that the rotation of the vacuum pump 13 through the belt 11 is not generated because the controller 23 has almost no signal value of the sensor 21d, the controller 23 turns on the relay 22 until the engine is stopped. Of course.
한편, 상기 콘트롤러(23)의 릴레이(22)작동신호인 센서(21d)의 신호 값은 엔진 회전수와 진공펌프(13)의 풀리(13a)직경사이의 상관 관계를 즉, 엔진 회전수가 약 800RPM이고 풀리(13a)의 직경이 크랭크샤프트풀리(C)직경의 1/2정도이면, 상기 풀리(13a)는 약 1600RPM으로 회전되므로 상기 콘트롤러(23)는 이 회전수를 기준으로 하여 그 상·하 값으로 진공펌프(13)의 작동여부를 판단하게 됨은 물론이다.On the other hand, the signal value of the sensor 21d which is the relay 22 operation signal of the controller 23 indicates the correlation between the engine speed and the diameter of the pulley 13a of the vacuum pump 13, that is, the engine speed is about 800 RPM. When the diameter of the pulley 13a is about 1/2 of the diameter of the crankshaft pulley (C), the pulley 13a is rotated at about 1600 RPM so that the controller 23 has its top and bottom on the basis of this rotational speed. Of course, the operation of the vacuum pump 13 is determined by the value.
이상 설명한 바와 같이 본 발명에 의하면, 엔진의 크랭크샤프트풀리에 벨트를 매개로 회전력을 전달받아 작동되는 진공펌프에 그 회전여부에 따라 차량에 탑재된 배터리의 전원을 통전시켜 주는 보조구동수단이 구비되어져, 엔진의 회전력을 전달하는 벨트의 이상 시 전기 모터를 이용해 진공펌프를 작동시켜 주행 중인 차량의 부압 미 발생에 의한 차량의 제어 불능을 방지할 수 있는 효과가 있게 된다.As described above, according to the present invention, an auxiliary driving means for energizing the power of the battery mounted on the vehicle is provided to the crankshaft pulley of the engine, which is operated by receiving rotational force through a belt. In the event of an abnormality of the belt that transmits the rotational force of the engine, the vacuum pump is operated by using the electric motor, thereby preventing the vehicle from being uncontrollable due to the occurrence of the negative pressure of the running vehicle.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0067799A KR100428160B1 (en) | 2001-11-01 | 2001-11-01 | Dual vacuum generating system of brake system in diesel car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0067799A KR100428160B1 (en) | 2001-11-01 | 2001-11-01 | Dual vacuum generating system of brake system in diesel car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20030037307A KR20030037307A (en) | 2003-05-14 |
| KR100428160B1 true KR100428160B1 (en) | 2004-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2001-0067799A KR100428160B1 (en) | 2001-11-01 | 2001-11-01 | Dual vacuum generating system of brake system in diesel car |
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| Country | Link |
|---|---|
| KR (1) | KR100428160B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164670A (en) * | 1987-12-21 | 1989-06-28 | Nippon Piston Ring Co Ltd | Pressure difference generating device for master bag in brake magnification system for diesel engine automobile |
| JPH10181580A (en) * | 1996-12-27 | 1998-07-07 | Suzuki Motor Corp | Power assist device |
| KR19980061155A (en) * | 1996-12-31 | 1998-10-07 | 박병재 | Braking power booster |
-
2001
- 2001-11-01 KR KR10-2001-0067799A patent/KR100428160B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164670A (en) * | 1987-12-21 | 1989-06-28 | Nippon Piston Ring Co Ltd | Pressure difference generating device for master bag in brake magnification system for diesel engine automobile |
| JPH10181580A (en) * | 1996-12-27 | 1998-07-07 | Suzuki Motor Corp | Power assist device |
| KR19980061155A (en) * | 1996-12-31 | 1998-10-07 | 박병재 | Braking power booster |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030037307A (en) | 2003-05-14 |
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