KR101207804B1 - Electronic control brake system - Google Patents

Electronic control brake system Download PDF

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Publication number
KR101207804B1
KR101207804B1 KR1020080077251A KR20080077251A KR101207804B1 KR 101207804 B1 KR101207804 B1 KR 101207804B1 KR 1020080077251 A KR1020080077251 A KR 1020080077251A KR 20080077251 A KR20080077251 A KR 20080077251A KR 101207804 B1 KR101207804 B1 KR 101207804B1
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South Korea
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piston pump
pump
degrees
plane
piston
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KR1020080077251A
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Korean (ko)
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KR20100018657A (en
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서동일
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주식회사 만도
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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
    • B60T8/4031—Pump units characterised by their construction or mounting
    • 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
    • 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
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

본 발명은 펌프의 배치구조를 개선하여 펌프 작동시 발생하는 유압 맥동을 줄임과 동시에 신속한 액압을 형성할 수 있으면서도 는 전자제어식 브레이크 시스템에 관한 것이다. The present invention relates to an electronically controlled brake system while improving the arrangement of the pump to reduce the hydraulic pulsation generated during pump operation and at the same time to form a rapid hydraulic pressure.

본 발명의 실시예에 따른 전자제어식 브레이크 시스템은 제1 및 제2 유압회로 상에 설치되며 샤프트을 갖는 모터부에 의해 구동되는 제1 및 제2 펌프유닛을 포함하는 전자제어식 브레이크 시스템에서, 제1펌프유닛은 제1피스톤펌프, 제2피스톤펌프, 제3피스톤펌프를 포함하며, 제2펌프유닛은 제4피스톤펌프, 제5피스톤펌프, 제6피스톤펌프를 포함하며, 제2피스톤펌프, 제4피스톤펌프, 제6피스톤펌프는 회전축과 직각방향을 이루는 제1평면에 형성되며, 제1피스톤펌프, 제3피스톤펌프, 제5피스톤펌프는 제1평면과 회전축 방향으로 일정간격 이격된 제2평면에 형성되는 것을 특징으로 한다.In an electronically controlled brake system according to an embodiment of the present invention, in an electronically controlled brake system including first and second pump units installed on first and second hydraulic circuits and driven by a motor unit having a shaft, a first pump is provided. The unit includes a first piston pump, a second piston pump, and a third piston pump, and the second pump unit includes a fourth piston pump, a fifth piston pump, and a sixth piston pump, and the second piston pump and the fourth piston pump. The piston pump and the sixth piston pump are formed on a first plane perpendicular to the rotation axis, and the first piston pump, the third piston pump, and the fifth piston pump are spaced apart from the first plane by a predetermined interval in the direction of the rotation axis. Characterized in that formed.

Description

전자제어식 브레이크 시스템{ELECTRONIC CONTROL BRAKE SYSTEM}Electronically controlled brake system {ELECTRONIC CONTROL BRAKE SYSTEM}

본 발명은 전자제어식 브레이크 시스템에 관한 것으로, 더욱 상세하게는 펌프의 배치구조를 개선하여 펌프 작동시 발생하는 유압 맥동을 줄임과 동시에 신속한 액압을 형성할 수 있는 전자제어식 브레이크 시스템에 관한 것이다. The present invention relates to an electronically controlled brake system, and more particularly to an electronically controlled brake system that can improve the arrangement of the pump to reduce the hydraulic pulsation generated during the operation of the pump and at the same time to form a rapid hydraulic pressure.

일반적으로 전자제어식 브레이크 시스템은 차량의 슬립현상을 효과적으로 방지하여 강력하고 안정된 제동력을 얻기 위한 것으로, 이러한 전자제어식 브레이크 시스템으로는 제동시 휠의 미끄러짐을 방지하는 안티록 브레이크 시스템(ABS:Anti-Lock Brake System)과, 차량의 급발진 또는 급가속시 구동륜의 슬립을 방지하는 브레이크 트랙션 제어시스템(BTCS:Brake Traction Control System)과, 안티록 브레이크 시스템과 트랙션 제어를 조합하여 브레이크 액압을 제어함으로써 차량의 주행상태를 안정적으로 유지시키는 차량 자세제어 시스템(VDC:Vehicle Dynamic Control System) 등이 개발되어 있다.In general, the electronically controlled brake system effectively prevents the slip of the vehicle and obtains a strong and stable braking force. The electronically controlled brake system uses an anti-lock brake system (ABS: Anti-Lock Brake) to prevent the wheel from slipping during braking. System), the brake traction control system (BTCS) to prevent slippage of the driving wheel during sudden start or acceleration of the vehicle, and the anti-lock brake system and traction control in combination to control the brake hydraulic pressure to drive the vehicle. A vehicle dynamic control system (VDC) has been developed to keep the vehicle stable.

이러한 전자제어식 브레이크 시스템은 휠에 장착된 유압브레이크 측으로 전달되는 제동유압을 제어하기 위한 다수개의 솔레노이드밸브와, 유압브레이크로부터 빠져나온 오일을 일시 저장하기 위한 저압 어큐뮬레이터와, 저압 어큐뮬레이터의 오일을 강제 펌핑하기 위한 모터 및 펌프와, 솔레노이드밸브들과 모터의 구동을 제어하기 위한 ECU를 포함하고 있으며, 이러한 구성요소들은 알루미늄으로 제작된 모듈레이터 블럭에 콤팩트하게 내장되어 설치된다.The electronically controlled brake system includes a plurality of solenoid valves for controlling the braking hydraulic pressure delivered to the hydraulic brake side mounted on the wheel, a low pressure accumulator for temporarily storing oil discharged from the hydraulic brake, and a forced pumping of the oil of the low pressure accumulator. Motors and pumps, solenoid valves and ECUs for controlling the operation of the motors. These components are compactly installed in a modulator block made of aluminum.

따라서, 상기 시스템은 펌프의 작동에 의해 저압 어큐뮬레이터의 오일이 가압되어 펌핑되고, 이 가압된 오일이 유압브레이크 또는 마스터실린더 어셈블리 측으로 전달되면서 휠의 전자제어가 행해지도록 되어 있다.Accordingly, the system is configured to perform the electronic control of the wheel while the oil of the low pressure accumulator is pressurized and pumped by the operation of the pump, and the pressurized oil is transferred to the hydraulic brake or the master cylinder assembly side.

그런데, 종래의 전자제어식 브레이크 시스템은 하나의 모터에 두 개의 펌프가 결합된 듀얼 펌프(dual pump) 타입으로 이루어져 있다. 즉 모터의 회전축이 일회전함에 따라 각 펌프가 1회의 흡입행정과 배출행정을 하여 각 유압회로에 압유를 공급하기 때문에, 펌프 배출행정시 마스터 실린더 측에서의 유압 맥동의 폭이 크며, 휠 제어시 펌프 작동에 의한 유압브레이크의 압력 형성이 신속하게 이루어지지 않는다는 문제점이 있었다.However, the conventional electronically controlled brake system consists of a dual pump type in which two pumps are combined in one motor. In other words, as the rotational axis of the motor rotates once, each pump performs one suction stroke and one discharge stroke to supply hydraulic oil to each hydraulic circuit. Therefore, the width of the hydraulic pulsation on the master cylinder side during pump discharge stroke is large, There was a problem that the pressure formation of the hydraulic brake is not made quickly.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 펌프 구조를 개선하여 펌프 작동시 발생하는 유압 맥동을 줄임과 동시에 신속한 액압을 형성할 수 있는 전자제어식 브레이크 시스템을 제공하는데 있다. The present invention is to solve such a problem, an object of the present invention to improve the pump structure to reduce the hydraulic pulsation generated during the operation of the pump and at the same time provide an electronically controlled brake system capable of forming a rapid hydraulic pressure.

본 발명의 실시예에 따른 전자제어식 브레이크 시스템은 제1 및 제2 유압회로 상에 설치되며 샤프트을 갖는 모터부에 의해 구동되는 제1 및 제2 펌프유닛을 포함하는 전자제어식 브레이크 시스템에 있어서, 제1펌프유닛은 제1피스톤펌프, 제2피스톤펌프, 제3피스톤펌프를 포함하며, 제2펌프유닛은 제4피스톤펌프, 제5피스톤펌프, 제6피스톤펌프를 포함하며, 제2피스톤펌프, 제4피스톤펌프, 제6피스톤펌프는 회전축과 직각방향을 이루는 제1평면에 형성되며, 제1피스톤펌프, 제3피스톤펌프, 제5피스톤펌프는 제1평면과 회전축 방향으로 일정간격 이격된 제2평면에 형성되는 것을 특징으로 한다.In an electronically controlled brake system according to an embodiment of the present invention, the electronically controlled brake system includes first and second pump units installed on the first and second hydraulic circuits and driven by a motor unit having a shaft. The pump unit includes a first piston pump, a second piston pump, and a third piston pump, and the second pump unit includes a fourth piston pump, a fifth piston pump, and a sixth piston pump, and the second piston pump and the first piston pump. The four-piston pump and the six-piston pump are formed on a first plane perpendicular to the rotation axis, and the first piston pump, the third piston pump, and the fifth piston pump are spaced apart at regular intervals in the direction of the first plane and the rotation axis. Characterized in that the plane is formed.

또한, 상기 제1평면에 배치된 상기 제2피스톤펌프, 제4피스톤펌프, 제6피스톤펌프의 배치각도는 각각 90도와 150도와 120도를 이루며, 상기 제2평면에 배치된 상기 제1피스톤펌프, 제3피스톤펌프, 제5피스톤펌프의 배치각도는 각각 90도와 150도와 120도를 이루는 것을 특징으로 한다. In addition, an arrangement angle of the second piston pump, the fourth piston pump, and the sixth piston pump disposed on the first plane may be 90 degrees, 150 degrees, and 120 degrees, respectively, and the first piston pump disposed on the second plane. The arrangement angles of the third piston pump and the fifth piston pump are 90 degrees, 150 degrees and 120 degrees, respectively.

또한, 상기 제1평면, 제2평면에 배치된 각각의 펌프의 배치각도는 60도, 30도, 90도, 60도, 30도를 이루는 것을 특징으로 한다.In addition, the arrangement angle of each pump disposed in the first plane, the second plane is characterized in that it forms 60 degrees, 30 degrees, 90 degrees, 60 degrees, 30 degrees.

또한, 상기 모터부의 샤프트는 상기 제1평면에 대응하는 제1편심부와, 상기 제2평면에 대응하는 제2편심부를 포함하며, 상기 제1편심부와 제2편심부의 편심 위상은 150도 또는 210도인 것을 특징으로 한다.The shaft of the motor unit may include a first eccentric part corresponding to the first plane and a second eccentric part corresponding to the second plane, and the eccentric phase of the first eccentric part and the second eccentric part may be 150 degrees or It is characterized by being 210 degrees.

또한, 제1피스톤펌프는 피스톤을 수용하는 보어를 포함하며, 제1평면과 제2평면의 이격거리는 보어의 직경보다 작게 형성되는 것을 특징으로 한다.In addition, the first piston pump includes a bore for receiving the piston, characterized in that the separation distance between the first plane and the second plane is smaller than the diameter of the bore.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 전자제어식 브레이크 시스템은 하나의 모터에 의해 작동하는 복수의 펌프구조를 구비하고 있기 때문에 신 속한 증압이 가능하게 됨과 동시에 압력배출에 따른 작동소음과 압력맥동이 감소하게 된다.As described in detail above, the electronically controlled brake system according to the present invention includes a plurality of pump structures operated by a single motor, which enables quick increase in pressure and at the same time operating noise and pressure pulsation caused by pressure discharge. Will decrease.

또한, 1개의 유로에 속한 3개의 펌프유닛의 흡입측과 배출측을 블록의 펌프 열을 기준으로 한쪽으로 집중 배치하여 연결할 수 있기 때문에 유로 형성이 용이하게 된다.In addition, since the suction side and the discharge side of the three pump units belonging to one flow path can be concentrated and connected to one side based on the pump row of the block, the flow path is easily formed.

이하에서는 첨부도면을 참조하여 본 발명의 바람직한 실시 예를 상세하게 설명한다. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 전자제어식 브레이크 시스템의 유압계통도이다.1 is a hydraulic system diagram of an electronically controlled brake system according to the present invention.

도 1에 도시된 바와 같이, 본 발명에 따른 전자제어식 브레이크 시스템은 브레이크 페달 조작에 의해 유압을 발생시키는 마스터실린더 어셈블리(100)와, 마스터실린더 어셈블리(100)로부터 제공된 유압을 이용하여 휠의 제동을 수행하는 복수개의 브레이크실린더(200)와, 마스터실린더 어셈블리(100)와 복수개의 브레이크실린더(200)를 연결하는 제1 및 제2 유압회로(300, 800)와, 제1 및 제2유압회로(300, 800) 상에 설치되며 모터부(600)에 의해 구동되는 제1 및 제2펌프유닛(500, 700)을 포함한다.As shown in FIG. 1, the electronically controlled brake system according to the present invention uses a master cylinder assembly 100 for generating hydraulic pressure by a brake pedal operation, and brakes using a hydraulic pressure provided from the master cylinder assembly 100. A plurality of brake cylinders 200 to be performed, first and second hydraulic circuits 300 and 800 connecting the master cylinder assembly 100 and the plurality of brake cylinders 200, and first and second hydraulic circuits ( It is installed on the 300, 800 and includes a first and a second pump unit (500, 700) driven by the motor unit 600.

마스터실린더 어셈블리(100)는 운전자의 조작에 의해 작동되는 브레이크 페달(110)과, 브레이크 페달(110)의 조작력을 증폭시키는 부스터(120)와, 부스터(120)의 가압에 의해 압유를 발생시키는 마스터실린더(140)와, 오일을 저장하는 오일 리저버(oil reservoir)(150)를 포함한다.The master cylinder assembly 100 includes a brake pedal 110 operated by a driver's operation, a booster 120 for amplifying the operating force of the brake pedal 110, and a master for generating pressure oil by pressurization of the booster 120. A cylinder 140 and an oil reservoir 150 for storing oil.

브레이크실린더(200)는 마스터실린더 어셈블리(100)에서 발생된 유압을 이용하여 각 휠의 제동을 실행하기 위한 좌측 전륜(이하 'FL'이라 함) 브레이크 실린더(210)와 우측 후륜(이하 'RR'이라 함) 브레이크 실린더(220)와, 좌측 후륜(이하 'RL'이라 함) 브레이크 실린더(230)와, 우측 전륜(이하 'FR'이라 함) 브레이크 실린더(240)를 포함한다.The brake cylinder 200 includes a left front wheel (hereinafter referred to as "FL") brake cylinder 210 and a right rear wheel (hereinafter referred to as "RR") for performing braking of each wheel by using the hydraulic pressure generated from the master cylinder assembly 100. And a brake cylinder 220, a left rear wheel (hereinafter referred to as 'RL') brake cylinder 230, and a right front wheel (hereinafter referred to as 'FR') brake cylinder 240.

제1유압회로(hydraulic circuit)(300)와 제2유압회로(800)는 마스터실린더 어셈블리(100)에서 발생된 유압을 상기 각 브레이크 실린더(210, 220, 230, 240)로 전달하기 위해 이들을 연결하는 것으로, 각 회로(300, 800)는 오일이 순환하는 폐회로를 형성하며, 하나의 모터부(600)에 의해 연결되는 제1 및 제2펌프유닛(500, 700)을 각각 구비한다.The first hydraulic circuit 300 and the second hydraulic circuit 800 connect the hydraulic pressure generated in the master cylinder assembly 100 to each of the brake cylinders 210, 220, 230, and 240. Each circuit 300, 800 forms a closed circuit through which oil circulates, and includes first and second pump units 500 and 700 connected by one motor unit 600, respectively.

즉, 제1유압회로(300)는 마스터실린더 어셈블리(100)와 FL브레이크 실린더(210) 및 RR브레이크 실린더(220) 사이로 오일이 순환될 수 있도록 오일라인을 구비하며, 제2유압회로(600)는 마스터실린더 어셈블리(100)와 RL브레이크 실린더(230) 및 FR브레이크 실린더(240) 사이로 오일이 순환될 수 있도록 오일라인을 구비한다.That is, the first hydraulic circuit 300 includes an oil line to circulate oil between the master cylinder assembly 100, the FL brake cylinder 210, and the RR brake cylinder 220, and the second hydraulic circuit 600. Has an oil line so that oil can be circulated between the master cylinder assembly 100 and the RL brake cylinder 230 and the FR brake cylinder 240.

여기서, 제2유압회로(800)는 제1유압회로(300)와 독립적으로 구성되지만 동일한 배치구조를 가지므로, 제2유압회로(800)의 구성에 대해서는 특별히 언급해야 하는 경우를 제외하고는 제1유압회로(300)와 동일한 것으로 하여 설명을 생략한다.Here, since the second hydraulic circuit 800 is configured independently of the first hydraulic circuit 300, but has the same arrangement structure, the configuration of the second hydraulic circuit 800 is except for the case where special mention should be made. The same description as that of the one hydraulic circuit 300 is omitted.

제1유압회로(300)는 마스터 실린더(140)와 제1펌프유닛(500)의 흡입측(I.P) 를 연결하는 흡입라인(320)을 구비하며, 이 흡입라인(320) 상에는 노말 클로즈 타입(Normal Close Type)의 흡입측 솔레노이드 밸브(330)가 설치된다. 그리고, 흡입라인(320)은 제1펌프유닛(500)의 제1피스톤펌프(510)와 제2피스톤펌프(520)와 제3피스톤펌프(530)로 각각 연결되는 제1흡입라인(321)과 제2흡입라인(322)과 제3흡입라인(323)으로 분기된다. 그리고, 제1피스톤펌프(510), 제2피스톤펌프(520), 제3피스톤펌프(530)를 통과한 배출라인(381,382,383)에는 역류를 방지하는 체크밸브(V)가 각각 설치된다.The first hydraulic circuit 300 includes a suction line 320 connecting the master cylinder 140 and the suction side IP of the first pump unit 500, and on the suction line 320, a normal closed type ( Suction side solenoid valve 330 of Normal Close Type) is installed. In addition, the suction line 320 is a first suction line 321 connected to the first piston pump 510, the second piston pump 520, and the third piston pump 530 of the first pump unit 500, respectively. And branched to the second suction line 322 and the third suction line 323. In addition, the discharge lines 381, 382, and 383 passing through the first piston pump 510, the second piston pump 520, and the third piston pump 530 are provided with check valves V to prevent backflow.

또한, 제1유압회로(300)는 흡입라인(320)과 제1펌프유닛(500)의 배출측(O.P)을 연결하는 배출라인(380)을 구비하며, 이 배출라인(380) 상에는 노말 오픈 타입(Normal Open Type)의 배출측 솔레노이드 밸브(390)가 설치된다. In addition, the first hydraulic circuit 300 has a discharge line 380 connecting the suction line 320 and the discharge side OP of the first pump unit 500, and is normally open on the discharge line 380. A discharge side solenoid valve 390 of a normal type is installed.

또한, 배출라인(380)에서는 제동라인(400)이 분기되는데, 이 분기된 제동라인(400)를 통해서도 마스터 실린더(140)에서 배출측 솔레노이드 밸브(390), FL 및 RR 브레이크 실린더(210, 220)로 압유를 전달할 수 있다.In addition, the braking line 400 is branched from the discharge line 380. The branched braking line 400 also discharges the solenoid valve 390, FL and RR brake cylinders 210 and 220 from the master cylinder 140. ) Can deliver the pressure oil.

또한, 제동라인(400)은 제1펌프유닛(500)에 압유를 전달하는 상기 흡입라인(320)과도 연결되는데, 이 제동라인(400) 상에는 FL 및 RR 브레이크 실린더(210, 220)로 압유의 전달 및 배출을 제어하기 위한 복수개의 솔레노이드 밸브(410, 420)와, 오일을 일시 저장하기 위한 저압 어큐뮬레이터(430)가 설치된다.In addition, the braking line 400 is also connected to the suction line 320 that delivers the pressure oil to the first pump unit 500, on the braking line 400 of the hydraulic pressure to the FL and RR brake cylinder (210, 220) A plurality of solenoid valves 410 and 420 for controlling delivery and discharge, and a low pressure accumulator 430 for temporarily storing oil are installed.

한편, 상술한 바와 같이 모터부(600)에 의해 구동되는 제1펌프유닛(500)은 각각 제1피스톤펌프(510)와, 제2피스톤펌프(520)와, 제3피스톤펌프(530)를 포함하 며, 제2펌프유닛(700)은 제4피스톤펌프(710)와, 제5피스톤펌프(720)와, 제6피스톤펌프(730)를 포함한다. On the other hand, as described above, the first pump unit 500 driven by the motor unit 600, respectively, the first piston pump 510, the second piston pump 520, and the third piston pump 530 The second pump unit 700 includes a fourth piston pump 710, a fifth piston pump 720, and a sixth piston pump 730.

그리고, 피스톤펌프(510,520,530,710,720,730) 각각은 모듈레이터블럭(511)에 형성된 보어(511a)를 포함하며, 보어(511a)의 내부에 흡입유로(미도시)가 형성된 피스톤(512)과, 이 피스톤(512)의 위치에 따라 흡입유로(미도시)의 출구측을 개폐하는 인렛밸브(513)와, 인렛밸브(513)와 상반되게 동작하는 아웃렛밸브(514)를 포함하여 구성된다. Each of the piston pumps 510, 520, 530, 710, 720, and 730 includes a bore 511 a formed in the modulator block 511, and a piston 512 having a suction flow path (not shown) formed inside the bore 511 a, and the piston 512. Inlet valve 513 that opens and closes the outlet side of the suction flow path (not shown) according to the position of the, and the outlet valve 514 that operates opposite to the inlet valve 513.

여기서, 복수의 피스톤 펌프는 모터부(600)의 회전축(610)과 직각 방향으로 배치되는데, 이에 대한 상세한 구조는 도 2 내지 도 4를 참조하여 설명한다.Here, the plurality of piston pumps are arranged in a direction perpendicular to the rotation shaft 610 of the motor unit 600, a detailed structure thereof will be described with reference to FIGS.

도 2는 도 1에 설치된 모터와 각 펌프유닛의 배치구조를 나타낸 도면이다. 그리고, 도 3 및 도 4는 제1 및 제2평면을 구분하여 나타낸 도면이다.2 is a view showing the arrangement of the motor and each pump unit installed in FIG. 3 and 4 are diagrams illustrating the first and second planes separately.

도 2 내지 도 4에 도시된 바와 같이, 본 발명에 따른 제1 및 제2펌프유닛(500,700)은 모터부(600)의 회전축(610)과 직각방향으로 배치되는 제1평면(P1)과 제2평면(P2)을 포함하여 구성된다. 바람직하게는 제1평면(P1)과 제2평면(P2)의 이격거리는 피스톤(512)을 수용하는 보어(511a)의 직경보다 작게 형성되도록 한다.As shown in FIGS. 2 to 4, the first and second pump units 500 and 700 according to the present invention may include a first plane P1 and a first plane P disposed at right angles to the rotation shaft 610 of the motor unit 600. It is comprised including two planes P2. Preferably, the separation distance between the first plane P1 and the second plane P2 is smaller than the diameter of the bore 511a accommodating the piston 512.

제1평면(P1)에서는 제2피스톤펌프(520)와, 제4피스톤펌프(710)와, 제6피스톤펌프(730)가 배치된다. 그리고, 동일한 제1평면(P1)에 배치된 제2피스톤펌프(520)와 제4피스톤펌프(710)는 90도의 배치각도를 가지며, 제2피스톤펌프(520)와 제6피스톤펌프(730)는 150도의 배치각도를 가지며, 제4피스톤펌프(710)와 제6피스톤펌 프(730)는 120도의 배치각도를 가지도록 배열된다.In the first plane P1, a second piston pump 520, a fourth piston pump 710, and a sixth piston pump 730 are disposed. In addition, the second piston pump 520 and the fourth piston pump 710 disposed on the same first plane P1 have an arrangement angle of 90 degrees, and the second piston pump 520 and the sixth piston pump 730. Has an arrangement angle of 150 degrees, and the fourth piston pump 710 and the sixth piston pump 730 are arranged to have an arrangement angle of 120 degrees.

제2평면(P2)에서는 제1피스톤펌프(510)와, 제3피스톤펌프(530)와, 제5피스톤펌프(720)가 배치된다. 그리고, 동일한 제2평면(P2)에 배치된 제1피스톤펌프(510)()와 제3피스톤펌프의 배치각도는 150도를 가지며, 제3피스톤펌프(530)와 제5피스톤펌프(720)의 배치각도는 90도를 가지며, 제1피스톤펌프(510)와 제5피스톤펌프(720)는 120도의 배치각도를 가지도록 배열된다. In the second plane P2, the first piston pump 510, the third piston pump 530, and the fifth piston pump 720 are disposed. In addition, the arrangement angles of the first piston pump 510 () and the third piston pump disposed on the same second plane P2 have 150 degrees, and the third piston pump 530 and the fifth piston pump 720 are disposed. The arrangement angle of the has a 90 degree, the first piston pump 510 and the fifth piston pump 720 is arranged to have an arrangement angle of 120 degrees.

따라서, 하나의 모터부(600)에 의해 구동되는 제1펌프유닛(500)의 제1피스톤펌프(510), 제2피스톤펌프(520), 제3피스톤펌프(530)는 모터(620)의 회전축(630)을 중심으로 상대적으로 30도와 90도와 240도에 해당하는 위치에 서로 인접하게 배치되고, 제2펌프유닛(700)의 제4피스톤펌프(710), 제5피스톤펌프(720), 제6피스톤펌프(730)는 각각 30도와 90도와 240도에 해당하는 위치에 서로 인접하게 배치된다. 따라서, 제1평면(P1)과 제2평면(P2)에 배치된 각각의 펌프의 배치각도는 60도, 30도, 90도, 60도, 30도, 90도를 이루게 된다.Accordingly, the first piston pump 510, the second piston pump 520, and the third piston pump 530 of the first pump unit 500 driven by one motor unit 600 are connected to each other of the motor 620. The fourth and second piston pumps 710 and 710 of the second pump unit 700 are disposed adjacent to each other at positions corresponding to 30, 90, and 240 degrees relative to the rotation shaft 630, The sixth piston pump 730 is disposed adjacent to each other at positions corresponding to 30, 90, and 240 degrees, respectively. Therefore, the arrangement angles of the pumps arranged on the first plane P1 and the second plane P2 are 60 degrees, 30 degrees, 90 degrees, 60 degrees, 30 degrees, and 90 degrees.

그러므로, 펌프유닛의 흡입측(I.P)과 배출측(O.P)을 블록의 펌프 열을 기준으로 서로 인접하도록 한쪽으로 집중 배치하여 연결할 수 있기 때문에 용이하게 유로 형성을 할 수 있다는 이점이 있다.Therefore, since the suction side I.P and the discharge side O.P of the pump unit can be centrally arranged and connected to one another so as to be adjacent to each other based on the pump row of the block, there is an advantage that the flow path can be easily formed.

그리고, 모터부(600)의 회전축(610)에는 제1평면(P1)에 대응하는 위치에서 제1편심부재(611)가 형성되며, 제2평면(P2)에 대응하는 위치에서 제2편심부재(612)가 형성된다. 이러한 제1편심부재(611)는 모터부(600)의 회전축(610)에서 일측으로 편심되도록 연결 고정된 제1편심캠(611)으로 구성될 수 있다. 또한, 제2편심부 재(612)는 일측으로 편심되도록 연결 고정된 제2편심캠(612)으로 구성될 수 있다. 여기서, 제2편심부재(612)는 편심 위상이 제1편심부재(611)에 대해 150도 또는 210도로 변위되도록 구성되어 있다. 즉, 제1평면(P1)에 형성된 제2피스톤펌프(520), 제4피스톤펌프(710), 제6피스톤펌프(730)는 제2평면(P2)에 형성된 제1피스톤펌프(510), 제3피스톤펌프(530), 제5피스톤펌프(720)와 제1편심부재(611), 제2편심부재(612)에 의해 150도의 위상차를 가지게 된다. In addition, a first eccentric member 611 is formed on the rotation shaft 610 of the motor unit 600 at a position corresponding to the first plane P1, and a second eccentric member at a position corresponding to the second plane P2. 612 is formed. The first eccentric member 611 may be composed of a first eccentric cam 611 connected and fixed to be eccentric to one side from the rotation shaft 610 of the motor unit 600. In addition, the second eccentric member 612 may be configured as a second eccentric cam 612 is fixed to be eccentric to one side. Here, the second eccentric member 612 is configured such that the eccentric phase is displaced by 150 degrees or 210 degrees with respect to the first eccentric member 611. That is, the second piston pump 520, the fourth piston pump 710, and the sixth piston pump 730 formed on the first plane P1 may include the first piston pump 510 formed on the second plane P2, The third piston pump 530, the fifth piston pump 720, the first eccentric member 611, and the second eccentric member 612 have a phase difference of 150 degrees.

따라서, 도 5에 도시된 바와 같이. 모터(600)가 작동하여 회전축(610)이 회전하게 되면 펌프의 배치구조와 편심부재에 의하여 제1펌프유닛(500)을 통해서는 -30도와 90도와 210도의 위상으로 오일이 배출되게 되며, 제2펌프유닛(700)을 통해서는 0도와 120도와 240도의 위상으로 오일이 배출되게 된다. Thus, as shown in FIG. 5. When the rotating shaft 610 is rotated by the operation of the motor 600, the oil is discharged in the phase of -30 degrees, 90 degrees, and 210 degrees through the first pump unit 500 by the arrangement of the pump and the eccentric member. Through the two pump unit 700, the oil is discharged in a phase of 0 degrees and 120 degrees and 240 degrees.

도 6은 제1유압회로에서의 압력변화를 나타낸 그래프이며, 도 7은 제2유압회로에서의 압력변화를 나타낸 그래프이며, 도 8은 도 6 및 도 7에 도시된 압력변화를 합산한 그래프이다. 도 6 내지 도 7에 도시된 바와 같이, 본 발명에 따른 복수의 피스톤 펌프 배치구조에 의해 전륜 또는 후륜 브레이크로 오일을 공급할 수 있기 때문에 압력 상승률을 상승시킬 수 있으면서도, 유압pulsation이 감소되어 작동노이즈를 저감할 수 있도록 한다.6 is a graph showing a pressure change in the first hydraulic circuit, FIG. 7 is a graph showing a pressure change in the second hydraulic circuit, and FIG. 8 is a graph summing the pressure changes shown in FIGS. 6 and 7. . As shown in FIGS. 6 to 7, the oil can be supplied to the front wheel or the rear wheel brake by the plurality of piston pump arrangements according to the present invention, while increasing the pressure rise rate, while reducing hydraulic pulsation to reduce operating noise. To be reduced.

상술한 바와 같이, 본 발명은 복수의 피스톤펌프의 배치구조를 개선하여 유압맥동을 줄임과 동시에 신속한 액압을 형성하면서도, 피스톤펌프의 흡입측과 배출측을 한쪽으로 집중 배치하여 용이하게 유로형성을 하는 것을 기본적인 기술적 사 상으로 하고 있음을 알 수 있다. 따라서, 본 발명의 기본적인 기술적 사상의 범주 내에서 당업계의 통상의 지식을 가진 자에게 있어서는 다른 많은 변형이 가능함은 물론이다.As described above, the present invention improves the arrangement of the plurality of piston pumps to reduce the hydraulic pulsation and at the same time to form a quick hydraulic pressure, while the inlet side and the outlet side of the piston pump is concentrated to one side to easily form a flow path It can be seen that this is a basic technical idea. Therefore, many modifications may be made by those skilled in the art without departing from the scope and spirit of the present invention.

도 1은 본 발명에 따른 전자제어식 브레이크 시스템의 유압계통도이다.1 is a hydraulic system diagram of an electronically controlled brake system according to the present invention.

도 2는 도 1에 설치된 모터와 각 펌프유닛의 배치구조를 나타낸 도면이다.2 is a view showing the arrangement of the motor and each pump unit installed in FIG.

도 3은 도 2에서 제1평면을 구분하여 나타낸 도면이다.3 is a diagram illustrating the first plane divided in FIG. 2.

도 4는 도 2에서 제1평면을 구분하여 나타낸 도면이다.4 is a diagram illustrating the first plane divided in FIG. 2.

도 5는 펌프의 배치구조와 편심부재에 의한 위상차를 나타낸 그래프이다.5 is a graph showing the phase difference between the arrangement of the pump and the eccentric member.

도 6은 제1유압회로에서의 압력변화를 나타낸 그래프이다.6 is a graph showing a change in pressure in the first hydraulic circuit.

도 7은 제2유압회로에서의 압력변화를 나타낸 그래프이다.7 is a graph showing a change in pressure in the second hydraulic circuit.

도 8은 도 6 및 도 7에 도시된 압력변화를 합산한 그래프이다. FIG. 8 is a graph summating pressure changes shown in FIGS. 6 and 7.

<도면의 주요부분에 대한 부호 설명> Description of the Related Art [0002]

510...제1피스톤펌프 520...제2피스톤펌프510 ... first piston pump 520 ... second piston pump

530...제3피스톤펌프 600...모터530 3rd piston pump 600 motor

610...회전축 611...제1편심부재610 ... rotation shaft 611 ... first eccentric member

612...제2편심부재 710...제4피스톤펌프612 second eccentric member 710 fourth piston pump

720...제5피스톤펌프 730...제6피스톤펌프720 ... 5th piston pump 730 ... 6th piston pump

P1...제1평면 P2...제2평면P1 ... Plane 1 P2 ... Plane 2

Claims (5)

제1 및 제2 유압회로 상에 설치되며 회전축을 갖는 모터부에 의해 구동되는 제1 및 제2 펌프유닛을 포함하는 전자제어식 브레이크 시스템에 있어서, An electronically controlled brake system comprising first and second pump units mounted on first and second hydraulic circuits and driven by a motor unit having a rotating shaft, 상기 제1펌프유닛은 제1피스톤펌프, 제2피스톤펌프, 제3피스톤펌프를 포함하며, The first pump unit includes a first piston pump, a second piston pump, a third piston pump, 상기 제2펌프유닛은 제4피스톤펌프, 제5피스톤펌프, 제6피스톤펌프를 포함하며,The second pump unit includes a fourth piston pump, a fifth piston pump, and a sixth piston pump, 상기 제2피스톤펌프, 제4피스톤펌프, 제6피스톤펌프는 상기 회전축과 직각방향을 이루는 제1평면에 형성되며, The second piston pump, the fourth piston pump, and the sixth piston pump are formed on a first plane perpendicular to the rotation axis. 상기 제1피스톤펌프, 제3피스톤펌프, 제5피스톤펌프는 상기 제1평면과 상기 회전축 방향으로 이격된 제2평면에 형성되며,The first piston pump, the third piston pump and the fifth piston pump are formed on the second plane spaced apart from the first plane in the direction of the rotation axis, 상기 모터부의 회전축은 상기 제1평면에 대응하는 제1편심부와, 상기 제2평면에 대응하는 제2편심부를 포함하며, The rotating shaft of the motor unit includes a first eccentric portion corresponding to the first plane and a second eccentric portion corresponding to the second plane, 상기 제1편심부와 제2편심부의 편심 위상은 150도 또는 210도인 것을 특징으로 하는 전자제어식 브레이크 시스템.And the eccentric phase of the first and second eccentric portions is 150 degrees or 210 degrees. 제 1 항에 있어서, The method of claim 1, 상기 제1평면에 배치된 상기 제2피스톤펌프, 제4피스톤펌프, 제6피스톤펌프의 배치각도는 각각 90도와 150도와 120도를 이루며, The arrangement angles of the second piston pump, the fourth piston pump, and the sixth piston pump arranged on the first plane are 90 degrees, 150 degrees, and 120 degrees, respectively. 상기 제2평면에 배치된 상기 제1피스톤펌프, 제3피스톤펌프, 제5피스톤펌프의 배치각도는 각각 90도와 150도와 120도를 이루는 것을 특징으로 하는 전자제어식 브레이크 시스템.And an arrangement angle of the first piston pump, the third piston pump, and the fifth piston pump disposed on the second plane is 90 degrees, 150 degrees, and 120 degrees, respectively. 제 2 항에 있어서, The method of claim 2, 상기 제1평면, 제2평면에 배치된 각각의 펌프의 배치각도는 60도, 30도, 90도, 60도, 30도를 이루는 것을 특징으로 하는 전자제어식 브레이크 시스템.And an arrangement angle of each pump disposed on the first plane and the second plane is 60 degrees, 30 degrees, 90 degrees, 60 degrees, 30 degrees. 삭제delete 제 1 항에 있어서, The method of claim 1, 상기 제1피스톤펌프는 피스톤을 수용하는 보어를 포함하며, The first piston pump includes a bore for receiving a piston, 상기 제1평면과 제2평면의 이격거리는 상기 보어의 직경보다 작게 형성되는 것을 특징으로 하는 전자제어식 브레이크 시스템.The distance between the first plane and the second plane is electrically controlled brake system, characterized in that formed smaller than the diameter of the bore.
KR1020080077251A 2008-08-07 2008-08-07 Electronic control brake system KR101207804B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010198A (en) 1997-03-14 2000-01-04 Unisia Jecs Corporation Automotive brake control system with skid control unit and traction and vehicle dynamics control unit
KR100771018B1 (en) 2002-04-08 2007-10-29 주식회사 만도 Pump of electronic control brake system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6010198A (en) 1997-03-14 2000-01-04 Unisia Jecs Corporation Automotive brake control system with skid control unit and traction and vehicle dynamics control unit
KR100771018B1 (en) 2002-04-08 2007-10-29 주식회사 만도 Pump of electronic control brake system

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