KR20080045372A - System and method for controling rear suspension for automobile - Google Patents

System and method for controling rear suspension for automobile Download PDF

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Publication number
KR20080045372A
KR20080045372A KR1020060114424A KR20060114424A KR20080045372A KR 20080045372 A KR20080045372 A KR 20080045372A KR 1020060114424 A KR1020060114424 A KR 1020060114424A KR 20060114424 A KR20060114424 A KR 20060114424A KR 20080045372 A KR20080045372 A KR 20080045372A
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South Korea
Prior art keywords
ctba
mounting bush
vehicle speed
pressure
mounting
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KR1020060114424A
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Korean (ko)
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최재칠
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현대자동차주식회사
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Priority to KR1020060114424A priority Critical patent/KR20080045372A/en
Publication of KR20080045372A publication Critical patent/KR20080045372A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/048—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics with the regulating means inside the fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051—Trailing arm twist beam axles
    • B60G21/052—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/40—Type of actuator
    • B60G2202/42—Electric actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/124—Mounting of coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/20—Speed
    • B60G2400/204—Vehicle speed
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

A system for controlling rear suspension characteristics automatically for an automobile is provided to improve handling and ride feeling of the automobile selectively according to moving distance. A system for controlling rear suspension characteristics automatically for an automobile comprises a CTBA mounting bush(100), a hydraulic operating unit and a return spring(20). The system controls moving distance of the CTBA mounting bush in a gap on a shaft line of a CTBA mounting bracket(200) where the CTBA mounting bush is fixed, mounts the hydraulic operating unit receiving pressure in proportion to automobile speed in one part and the return spring absorbing impact with respect to pressure variation of the hydraulic operating unit and returning again in an opposite part so as to control left/right moving amount of the CTBA mounting bush.

Description

자동차용 후륜 현가특성의 자동조절 시스템 및 방법{System and method for controling rear suspension for automobile}System and method for control rear suspension for automobile

도 1은 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 시스템을 나타내는 구성도,1 is a block diagram showing an automatic adjustment system of the rear wheel suspension characteristics for automobiles according to the present invention,

도 2 및 도 3은 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 시스템의 작동상태를 나타내는 작동도,2 and 3 is an operation diagram showing an operating state of the automatic adjustment system of the rear wheel suspension characteristics for automobiles according to the present invention,

도 4는 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 방법을 나타내는 작동순서도,4 is an operation flowchart showing a method for automatically adjusting a rear wheel suspension characteristic for a vehicle according to the present invention;

도 5는 본 발명에 따른 차속에 따른 압력 특성 곡선을 나타내는 그래프,5 is a graph showing a pressure characteristic curve according to the vehicle speed according to the present invention;

도 6은 일반적인 트레일링 암의 CTBA 마운팅 부시가 장착된 상태를 나타내는 장착도이다. 6 is a mounting view showing a state in which the CTBA mounting bush of the general trailing arm is mounted.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 유압작동수단 11 : 차속센서10: hydraulic operation means 11: vehicle speed sensor

12 : ECU 13 : 부스터 액츄에이터12 ECU 10 Booster Actuator

14 : 엔진 부스터 15 : 실린더장치14 engine booster 15 cylinder device

15a : 피스톤로드 15b : 부시유동 브라켓15a: Piston Rod 15b: Bush Flow Bracket

20 : 리턴스프링20: return spring

본 발명은 자동차용 후륜 현가특성의 자동조절 시스템 및 방법에 관한 것으로서, 더욱 상세하게는 CTBA 마운팅 부시와, 차체에 연결된 CTBA 마운팅 브라켓 사이의 유동 간격을 조절하여 그 유동 간격에 따라 상기 CTBA 마운팅 부시의 좌,우 유동량을 조절함으로써, 자동차의 핸들링 및 승차감의 성능을 선택적으로 향상시킬 수 있는 자동차용 후륜 현가특성의 자동조절 시스템 및 방법에 관한 것이다. The present invention relates to a system and method for automatically adjusting the rear wheel suspension characteristics for automobiles, and more particularly, to adjust the flow interval between the CTBA mounting bush and the CTBA mounting bracket connected to the vehicle body, and according to the flow interval of the CTBA mounting bush. The present invention relates to an auto-adjusting system and method for rear wheel suspension characteristics for automobiles which can selectively improve the performance of handling and riding comfort of a vehicle by adjusting the left and right flow amounts.

일반적으로, 주행진동이 차례로 전달되지 않도록 완화하는 현가장치 중에서 트레일링 암을 사용하는 방식이 있고, 이 트레일링 암은 차량의 뒤쪽으로 향한 1개 또는 2개의 암으로서, 차륜과 차체 사이에 연결되도록 설치되어 있다. Generally, a trailing arm is used to suspend driving vibrations from being transmitted one after another, and the trailing arm is one or two arms toward the rear of the vehicle, and is connected between the wheel and the body. It is installed.

즉, 차륜의 스핀들에 연결되어 있고, 이 스핀들은 차륜 사이에 횡으로 놓여진 토션 빔에 연결되어 있다. That is, it is connected to the spindle of the wheel, which is connected to the torsion beam lying laterally between the wheels.

또한, 상기 스핀들과 토션 빔 간의 고정력을 강화시키기 위해서 보강 브라켓이 스핀들과 토션 빔 사이에 설치되어 있으며, 상기 보강 브라켓 상에 트레일링 암의 일측 하단이 고정되어 있다.In addition, a reinforcing bracket is installed between the spindle and the torsion beam to reinforce the fixing force between the spindle and the torsion beam, and the lower end of one side of the trailing arm is fixed on the reinforcing bracket.

상기 트레일링 암은 CTBA 마운팅 부시(100)를 통해 차체 측의 CTBA 마운팅 브라켓(200)에 축고정되어 있는바, 상기 CTBA 마운팅 부시(100)와 CTBA 마운팅 브 라켓(200) 간의 간극량에 따라 자동차의 후륜 현가특성이 변화된다.The trailing arm is axially fixed to the CTBA mounting bracket 200 on the vehicle body side through the CTBA mounting bush 100, and according to the amount of clearance between the CTBA mounting bush 100 and the CTBA mounting bracket 200. The suspension characteristic of the rear wheel is changed.

즉, 상기 간극량이 적을 경우, 후륜 현가특성이 하드(HARD)화되어 저속일 경우는 딱딱한 주행감을 느끼는 반면, 고속일 경우에는 주행 안정성이 큰 이점이 있다.That is, when the gap amount is small, the rear wheel suspension characteristic is hardened, and at low speeds, a hard running feeling is sensed, while at high speeds, running stability is large.

반대로, 상기 간극량이 클 경우, 후륜 현가특성이 소프트(SOFT)화되어 저속일 경우에는 부드러운 주행 성능을 유지하는 반면, 고속일 경우에는 불안정한 주행감을 느끼게 된다.On the contrary, when the gap amount is large, the rear suspension characteristic is softened, so that smooth running performance is maintained at low speed, while unstable driving feeling is felt at high speed.

따라서, 자동차의 속도에 따라 상기 CTBA 마운팅 부시(100)와 CTBA 마운팅 브라켓(200) 간의 간극량을 조절하여 최적화된 주행 성능을 유지할 수 있는 자동차용 후륜 현가특성의 자동조절 시스템 및 방법에 대한 개발이 요구된다. Therefore, the development of an auto-adjustment system and method for the rear wheel suspension characteristics for automobiles that can maintain the optimized driving performance by adjusting the gap amount between the CTBA mounting bush 100 and the CTBA mounting bracket 200 according to the speed of the vehicle Required.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명한 것으로서, CTBA 마운팅 부시가 축고정되어 있는 CTBA 마운팅 브라켓의 축선 상의 간극 사이에서, 일측에는 리턴스프링을 장착하고, 타측에는 상기 CTBA 마운팅 부시를 일측으로 유동시키는 유압작동수단을 장착하여 자동차의 속도에 따라 상기 유압작동수단의 압력을 통해 CTBA 마운팅 부시를 일측으로 밀어 상기 CTBA 마운팅 브라켓에 대한 CTBA 마운팅 부시의 유동 간격을 조절함으로써, 그 유동 간격에 따라 자동차의 핸들링 및 승차감의 성능을 선택적으로 향상시킬 수 있는 자동차용 후륜 현가특성의 자동조절 시스템 및 방법을 제공하는데 그 목적이 있다.Therefore, the present invention has been invented to solve the above problems, between the gaps on the axis of the CTBA mounting bracket in which the CTBA mounting bush is axially fixed, one side is equipped with a return spring, the other side the mounting of the CTBA mounting bush By mounting the hydraulic actuating means for flowing to one side by pushing the CTBA mounting bush to one side through the pressure of the hydraulic actuating means in accordance with the speed of the vehicle to adjust the flow interval of the CTBA mounting bush to the CTBA mounting bracket, Accordingly, an object of the present invention is to provide a system and method for automatically adjusting rear suspension characteristics for automobiles that can selectively improve performance of handling and riding comfort of a vehicle.

상기와 같은 목적을 달성하기 위하여 본 발명은 CTBA 마운팅 부시(100)가 축고정되어 있는 CTBA 마운팅 브라켓(200)의 축선 상의 간극 사이에서 상기 CTBA 마운팅 부시(100)의 유동 간격을 조절하여 그 유동 간격에 따라 상기 CTBA 마운팅 부시(100)의 좌,우 유동량을 조절할 수 있도록 일측에는 차속에 비례하여 압력이 부여되는 유압작동수단(10)이 장착되고, 반대쪽에는 유압작동수단(10)의 압력 변화에 대한 충격을 흡수하고 이를 다시 리턴하는 리턴 스프링(20)이 장착된 것을 특징으로 한다. In order to achieve the above object, the present invention adjusts the flow interval of the CTBA mounting bush 100 between the gaps on the axis of the CTBA mounting bracket 200 in which the CTBA mounting bush 100 is axially fixed, and the flow interval thereof. According to the hydraulic actuation means 10 is provided with a pressure proportional to the vehicle speed is mounted on one side to adjust the left, right flow amount of the CTBA mounting bush 100, the opposite side to the pressure change of the hydraulic actuation means (10) It is characterized in that it is equipped with a return spring 20 for absorbing the shock and returning it back.

바람직한 구현예로서, 상기 유압작동수단(10)은 그 유압라인이 ECU(12)에 입력된 차속에 따라 전류신호를 인가받는 부스터 액츄에이터(13)와, 상기 부스터 액츄에이터(13)의 작동에 의해 엔진 부압을 전달하는 엔진 부스터(14)와, 상기 엔진 부스터(14)로부터 제공된 상기 엔진 부압을 이용하여 유압을 발생시키는 실린더장치(15)를 포함하여 구성된 것을 특징으로 한다.In a preferred embodiment, the hydraulic actuating means (10) is the engine by the booster actuator 13 and the booster actuator 13, the hydraulic line is applied with a current signal according to the vehicle speed input to the ECU 12 It is characterized in that it comprises an engine booster 14 for transmitting a negative pressure, and a cylinder device 15 for generating a hydraulic pressure by using the engine negative pressure provided from the engine booster (14).

한편, 본 발명에 따른 자동차용 후륜 현가특성의 자동조절방법은 차속센서(11)를 통해 차속을 감지하는 단계와; On the other hand, the automatic adjustment method of the rear wheel suspension characteristics for automobiles according to the present invention includes the steps of detecting the vehicle speed through the vehicle speed sensor (11);

차속에 따른 압력 특성 곡선을 통해 ECU(12)가 작동신호를 부스터 액츄에이터(13)에 인가하는 단계와;The ECU 12 applying an operating signal to the booster actuator 13 through a pressure characteristic curve according to the vehicle speed;

상기 부스터 액츄에이터(13)의 작동에 의해 엔진 부스터(14)가 엔진 부압을 실린더장치(15)에 전달하는 단계와; The engine booster (14) transmitting the engine negative pressure to the cylinder device (15) by the operation of the booster actuator (13);

상기 실린더장치(15)가 엔진 부압을 CTBA 마운팅 부시(100)에 전달하는 단계로 이루어지게 되어 차속이 증가할수록 CTBA 마운팅 부시(100)에 전달되는 압력이 증가되고, 차속이 감소할수록 CTBA 마운팅 부시(100)에 전달되는 압력은 감소되어 CTBA 마운팅 브라켓(200)에 대한 CTBA 마운팅 부시(100)의 좌,우 유동량을 조절할 수 있는 단계로 이루어진 것을 특징으로 한다. The cylinder device 15 is configured to transmit the engine negative pressure to the CTBA mounting bush 100. As the vehicle speed increases, the pressure transmitted to the CTBA mounting bush 100 increases, and as the vehicle speed decreases, the CTBA mounting bush ( The pressure delivered to the 100) is reduced, characterized in that the step consisting of adjusting the flow amount of the left, right of the CTBA mounting bush 100 relative to the CTBA mounting bracket 200.

이하, 첨부도면을 참조하여 본 발명의 구성에 대해 상세하게 설명하면 다음과 같다. Hereinafter, the configuration of the present invention with reference to the accompanying drawings in detail.

첨부한 도 1은 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 시스템을 나타내는 구성도이며, 도 2 및 도 3은 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 시스템의 작동상태를 나타내는 작동도이다. 1 is a configuration diagram showing the automatic adjustment system of the rear wheel suspension characteristics for automobiles according to the present invention, Figures 2 and 3 is an operation diagram showing the operating state of the automatic adjustment system of the rear wheel suspension characteristics for automobiles according to the present invention. to be.

도 1에 도시된 바와 같이, 본 발명은 주행진동이 차례로 전달되지 않도록 완화하는 현가장치 중에서 트레일링 암의 선단에 장착된 CTBA 마운팅 부시(100)는 차체에 연결된 CTBA 마운팅 브라켓(200)에 축고정되어 있다.As shown in FIG. 1, the present invention provides a CTBA mounting bush 100 mounted at the tip of a trailing arm in a suspension device that relaxes the driving vibrations from being sequentially transmitted to a CTBA mounting bracket 200 connected to a vehicle body. It is.

이때, 상기 CTBA 마운팅 부시(100)가 축고정되어 있는 CTBA 마운팅 브라켓(200)의 축선 상의 간극량에 따라 자동차의 후륜 현가특성이 변화하는바, 그 축고정된 CTBA 마운팅 부시(100)의 유동 간격(간극량)을 조절하여 그 유동 간격에 따라 상기 CTBA 마운팅 부시(100)의 좌,우 유동량을 조절함으로써, 자동차의 핸들링 및 승차감의 성능을 선택적으로 향상시킬 수 있게 된다. At this time, the rear wheel suspension characteristic of the vehicle is changed according to the gap amount on the axis of the CTBA mounting bracket 200 in which the CTBA mounting bush 100 is axially fixed, and the flow interval of the axially fixed CTBA mounting bush 100 is changed. By adjusting the (gap amount) to adjust the left and right flow amount of the CTBA mounting bush 100 according to the flow interval, it is possible to selectively improve the performance of the handling and ride comfort of the vehicle.

즉, 상기 유동 간격이 적을 경우에는 고속 및 험로 주행시 주행 안정성이 크며, 상기 유동 간격이 클 경우에는 저속 주행시 부드러운 주행 성능을 확보할 수 있도록 하므로 본 발명의 바람직한 구현예에서는 상기 유동 간격이 자동차의 속도에 따라 조절될 수 있도록 하는 조절수단을 구비하게 되는바, 상기 조절수단으로는 유압작동수단(10)이 사용된다. In other words, when the flow interval is small, the running stability is high at high speeds and rough roads, and when the flow interval is large, the smooth running performance is ensured at low speeds. It is provided with a control means to be adjusted according to the bar, the hydraulic means 10 is used as the control means.

상기 유압작동수단(10)은 엔진 부압을 이용하는 것으로서, 그 유압라인은 ECU(12)에 입력된 차속에 따라 전류신호를 인가받는 부스터 액츄에이터(13)와, 상기 부스터 액츄에이터(13)의 작동에 의해 엔진 부압을 전달하는 엔진 부스터(14)와, 상기 엔진 부스터(14)로부터 제공된 상기 엔진 부압을 이용하여 유압을 발생시키는 실린더장치(15)로 구성되어 상기 CTBA 마운팅 부시(100)를 일측으로 작동시키게 되는바, 브레이크 장치의 유압라인과는 별도로 구성되어 있다.The hydraulic operation means 10 uses an engine negative pressure, and the hydraulic line is operated by the booster actuator 13 and the booster actuator 13 receiving a current signal according to the vehicle speed input to the ECU 12. An engine booster 14 for transmitting engine negative pressure and a cylinder device 15 for generating hydraulic pressure using the engine negative pressure provided from the engine booster 14 to operate the CTBA mounting bush 100 to one side. It is configured separately from the hydraulic line of the brake device.

이와 같은 유압작동수단(10)은 차속을 감지하는 차속센서(11)와, 상기 차속센서(11)에서의 감지신호를 전달받아 상기 부스터 액츄에이터(13)에 작동신호를 인가하는 ECU(12)를 통해 초기 구동되며, 이때 상기 차속센서(11)에서 감지하는 차속에 따라 인가되는 실린더장치(15)의 압력은 도 5에 도시된 차속에 따른 압력 특성 곡선을 통해 구동하게 된다. The hydraulic actuating means 10 includes a vehicle speed sensor 11 for detecting a vehicle speed and an ECU 12 for receiving a detection signal from the vehicle speed sensor 11 and applying an operation signal to the booster actuator 13. Initially driven through, the pressure of the cylinder device 15 applied according to the vehicle speed detected by the vehicle speed sensor 11 is driven through the pressure characteristic curve according to the vehicle speed shown in FIG.

즉, 차속이 증가할수록 CTBA 마운팅 부시(100)에 전달되는 압력이 증가하게 되는 1차 함수 그래프로 나타낼 수 있게 된다. That is, as the vehicle speed increases, the pressure transmitted to the CTBA mounting bush 100 may be represented by a linear function graph.

이에 대하여 도 4에 도시된 자동차용 후륜 현가특성의 자동조절 방법을 나타내는 작동순서도를 통해 상기 유압작동수단(10)이 작동하게 되는 작동순서를 설명하면, 차속센서(11)를 통해 차속을 감지하는 단계와, 차속에 따른 압력 특성 곡선을 통해 ECU(12)가 작동신호를 부스터 액츄에이터(13)에 인가하는 단계와, 상기 부 스터 액츄에이터(13)의 작동에 의해 엔진 부스터(14)가 엔진 부압을 실린더장치(15)에 전달하는 단계와, 상기 실린더장치(15)가 엔진 부압을 CTBA 마운팅 부시(100)에 전달하는 단계로 이루어지게 되어 차속이 증가할수록 CTBA 마운팅 부시(100)에 전달되는 압력은 증가하고, 반면에 차속이 감소할수록 CTBA 마운팅 부시(100)에 전달되는 압력은 감소하게 된다. On the other hand, when the operation sequence for operating the hydraulic operation means 10 through the operation flow chart illustrating the automatic adjustment method of the vehicle rear wheel suspension characteristics shown in Figure 4, the vehicle speed sensor 11 to detect the vehicle speed The ECU 12 applies an operating signal to the booster actuator 13 through a pressure characteristic curve according to the vehicle speed, and the engine booster 14 receives the engine negative pressure by the operation of the booster actuator 13. Transmitting to the cylinder device 15, and the cylinder device 15 is the step of transmitting the engine negative pressure to the CTBA mounting bush 100 so that the pressure transmitted to the CTBA mounting bush 100 as the vehicle speed increases On the other hand, as the vehicle speed decreases, the pressure transmitted to the CTBA mounting bush 100 decreases.

즉, 상기 실린더장치(15)에 의해 작동되는 피스톤로드(15a)는 이와 일체로 결합된 부시유동 브라켓(15b)을 통해 CTBA 마운팅 부시(100)를 일측으로 밀게 되는 것이다. That is, the piston rod 15a operated by the cylinder device 15 pushes the CTBA mounting bush 100 to one side through the bush flow bracket 15b integrally coupled thereto.

한편, 상기 CTBA 마운팅 부시(100)를 CTBA 마운팅 브라켓(200)의 중앙부에 두고, 일측의 부시유동 브라켓(15b)이 위치한 반대쪽에는 리턴스프링(20)이 장착되어 있어 상기 부시유동 브라켓(15b)의 압착력 변화에 대한 충격을 흡수하고 이를 다시 리턴하는 기능을 하게 된다. On the other hand, the CTBA mounting bush 100 is placed in the center of the CTBA mounting bracket 200, and the return spring 20 is mounted on the opposite side where the bush flow bracket 15b on one side is located, so that the bush flow bracket 15b It absorbs the impact of the change in compressive force and returns it.

따라서, 본 발명은 자동차의 속도에 의해 CTBA 마운팅 부시(100)의 유동량을 유압작동수단(10)을 이용하여 조절하되, 자동차의 속도가 고속일 경우, 상기 부시유동 브라켓(15b)의 압착력을 높여 CTBA 마운팅 부시(100)의 좌,우 유동량을 작게 함에 따라 핸들링 성능 및 승차감을 향상시킬 수 있으며, 자동차의 속도가 저속일 경우, 상기 부시유동 브라켓(15b)의 압착력을 낮춰 CTBA 마운팅 부시(100)의 좌,우 유동량을 크게 함에 따라 핸들링 응답성 증가 및 주행 안정성을 향상시킬 수 있는 새로운 자동차용 후륜 현가특성의 자동조절 시스템 및 방법이다. Therefore, the present invention controls the flow amount of the CTBA mounting bush 100 by the speed of the vehicle by using the hydraulic operation means 10, but when the speed of the car is high, the pressing force of the bush flow bracket (15b) to increase As the left and right flow amount of the CTBA mounting bush 100 is reduced, handling performance and ride comfort can be improved. When the speed of the vehicle is low, the CTBA mounting bush 100 can be reduced by lowering the pressing force of the bush flow bracket 15b. It is a new auto-adjusting system and method for the rear wheel suspension characteristic of automobile which can increase handling response and improve driving stability by increasing the flow of left and right of the vehicle.

이상에서 본 바와 같이, 본 발명에 따른 자동차용 후륜 현가특성의 자동조절 시스템 및 방법에 의하면, 고속 및 험로 주행시에는 CTBA 마운팅 부시가 축고정되어 있는 CTBA 마운팅 브라켓의 축선 상의 간극 사이가 줄어들게 되고 저속 주행시에는 CTBA 마운팅 부시가 축고정되어 있는 CTBA 마운팅 브라켓의 축선 상의 간극 사이가 상대적으로 늘어나게 되어 자동차의 주행 성능 및 주행 안정성 향상을 도모할 수 있는 효과가 있다.As described above, according to the automatic adjustment system and method of the rear wheel suspension characteristics for automobiles according to the present invention, the high-speed and the rugged road is reduced between the clearance gap between the axis of the CTBA mounting bracket in which the CTBA mounting bush is axially fixed, In this case, the clearance between the axial gap of the CTBA mounting bracket, in which the CTBA mounting bush is axially fixed, is relatively increased, thereby improving driving performance and driving stability of the vehicle.

Claims (3)

CTBA 마운팅 부시(100)가 축고정되어 있는 CTBA 마운팅 브라켓(200)의 축선 상의 간극 사이에서 상기 CTBA 마운팅 부시(100)의 유동 간격을 조절하여 그 유동 간격에 따라 상기 CTBA 마운팅 부시(100)의 좌,우 유동량을 조절할 수 있도록 일측에는 차속에 비례하여 압력이 부여되는 유압작동수단(10)이 장착되고, 반대쪽에는 유압작동수단(10)의 압력 변화에 대한 충격을 흡수하고 이를 다시 리턴하는 리턴 스프링(20)이 장착된 것을 특징으로 하는 자동차용 후륜 현가특성의 자동조절 시스템.The flow of the CTBA mounting bush 100 is adjusted between the gaps on the axis of the CTBA mounting bracket 200 on which the CTBA mounting bush 100 is axially fixed, and the left side of the CTBA mounting bush 100 according to the flow interval. , One side is equipped with a hydraulic actuating means 10 is provided with a pressure proportional to the vehicle speed to adjust the right flow amount, on the opposite side of the return spring to absorb the impact of the pressure change of the hydraulic actuating means 10 and return it again Auto-adjustment system of the rear wheel suspension characteristic for automobiles, characterized in that 20 is mounted. 제1항에 있어서,The method of claim 1, 상기 유압작동수단(10)은 그 유압라인이 ECU(12)에 입력된 차속에 따라 전류신호를 인가받는 부스터 액츄에이터(13)와, 상기 부스터 액츄에이터(13)의 작동에 의해 엔진 부압을 전달하는 엔진 부스터(14)와, 상기 엔진 부스터(14)로부터 제공된 상기 엔진 부압을 이용하여 유압을 발생시키는 실린더장치(15)를 포함하여 구성된 것을 특징으로 하는 자동차용 후륜 현가특성의 자동조절 시스템.The hydraulic actuating means (10) is an engine that transmits an engine negative pressure by the booster actuator (13) to which the hydraulic line is applied with a current signal according to the vehicle speed input to the ECU (12), and the booster actuator (13). And a cylinder device (15) for generating hydraulic pressure by using a booster (14) and the engine negative pressure provided from the engine booster (14). 차속센서(11)를 통해 차속을 감지하는 단계와; Sensing a vehicle speed through the vehicle speed sensor 11; 차속에 따른 압력 특성 곡선을 통해 ECU(12)가 작동신호를 부스터 액츄에이터(13)에 인가하는 단계와;The ECU 12 applying an operating signal to the booster actuator 13 through a pressure characteristic curve according to the vehicle speed; 상기 부스터 액츄에이터(13)의 작동에 의해 엔진 부스터(14)가 엔진 부압을 실린더장치(15)에 전달하는 단계와; The engine booster (14) transmitting the engine negative pressure to the cylinder device (15) by the operation of the booster actuator (13); 상기 실린더장치(15)가 엔진 부압을 CTBA 마운팅 부시(100)에 전달하는 단계로 이루어지게 되어 차속이 증가할수록 CTBA 마운팅 부시(100)에 전달되는 압력이 증가되고, 차속이 감소할수록 CTBA 마운팅 부시(100)에 전달되는 압력은 감소되어 CTBA 마운팅 브라켓(200)에 대한 CTBA 마운팅 부시(100)의 좌,우 유동량을 조절할 수 있는 단계로 이루어진 것을 특징으로 하는 자동차용 후륜 현가특성의 자동조절 방법.The cylinder device 15 is configured to transmit the engine negative pressure to the CTBA mounting bush 100. As the vehicle speed increases, the pressure transmitted to the CTBA mounting bush 100 increases, and as the vehicle speed decreases, the CTBA mounting bush ( The pressure transmitted to the 100) is reduced to adjust the left and right flow amount of the CTBA mounting bush 100 relative to the CTBA mounting bracket 200, characterized in that the automatic adjustment method of the suspension characteristics of the rear wheels for cars.
KR1020060114424A 2006-11-20 2006-11-20 System and method for controling rear suspension for automobile KR20080045372A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112721562A (en) * 2021-02-04 2021-04-30 安徽安凯汽车股份有限公司 Intelligent management system for air suspension air bag of passenger car

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112721562A (en) * 2021-02-04 2021-04-30 安徽安凯汽车股份有限公司 Intelligent management system for air suspension air bag of passenger car
CN112721562B (en) * 2021-02-04 2022-03-29 安徽安凯汽车股份有限公司 Intelligent management system for air suspension air bag of passenger car

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