KR20040048638A - damping force changing apparatus for a vehicle - Google Patents
damping force changing apparatus for a vehicle Download PDFInfo
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- KR20040048638A KR20040048638A KR1020020076563A KR20020076563A KR20040048638A KR 20040048638 A KR20040048638 A KR 20040048638A KR 1020020076563 A KR1020020076563 A KR 1020020076563A KR 20020076563 A KR20020076563 A KR 20020076563A KR 20040048638 A KR20040048638 A KR 20040048638A
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- shock absorber
- vehicle
- damping force
- sensors
- hydraulic
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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
- B60G17/018—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 the use of a specific signal treatment or control method
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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
- B60G17/0152—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 the action on a particular type of suspension unit
- B60G17/0157—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 the action on a particular type of suspension unit non-fluid unit, e.g. electric motor
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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
- B60G17/019—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 the type of sensor or the arrangement thereof
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- 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
- B60G2202/41—Fluid actuator
- B60G2202/416—Fluid actuator using a pump, e.g. in the line connecting the lower chamber to the upper chamber of the actuator
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- 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
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- 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
- B60G2400/30—Propulsion unit conditions
- B60G2400/33—Throttle position
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- 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
- B60G2400/40—Steering conditions
- B60G2400/41—Steering angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60G2401/20—Switches, e.g. mercury or ball type switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
- B60G2600/22—Magnetic elements
- B60G2600/26—Electromagnets; Solenoids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
본 발명은 차량의 서스펜션에 관한 것으로서, 보다 상세하게는 차량의 운전 상태에 따라서 서스펜션에 사용되는 쇽업소버의 댐핑력을 가변시킬 수 있도록 하는 기술에 관한 것이다.The present invention relates to a suspension of a vehicle, and more particularly, to a technique for varying the damping force of the shock absorber used in the suspension according to the driving state of the vehicle.
일반적으로 승용차의 서스펜션에 주로 사용되는 쇽업소버의 댐핑력은 차량의 개발단계에서 적절히 튜닝되어 고정된 값을 가지게 되는데, 상기 댐핑력이 크면 조종성은 향상되나 승차감이 악화되는 성질을 가지고 있어서, 상기와 같이 일정하게 고정된 쇽업소버의 댐핑력으로 차량이 요구하는 적절한 승차감과 조종안정성을 모두 충족시키기에는 한계가 있다.In general, the damping force of the shock absorber, which is mainly used for suspension of a passenger car, is properly tuned and fixed at the stage of development of the vehicle, and the damping force is large, improving the maneuverability but deteriorating comfort. The damping force of the shock absorber, which is fixed at the same time, is limited to satisfy both the proper riding comfort and the steering stability required by the vehicle.
상기한 바와 같은 쇽업소버의 댐핑력 고정에 따른 문제를 해결하기 위한 방법으로 종래에는 고급승용차에 도 1에 도시된 바와 같은 전자제어 서스펜션을 채택하고 있다.As a method for solving the problem caused by the damping force fixing of the shock absorber as described above, the conventional electronic control suspension as shown in Figure 1 is adopted in a luxury car.
즉, 내부의 유체흐름을 제어할 수 있도록 액츄에이터(100)가 일체로 설치된 쇽업소버(102)를 G-센서(104), 조향각센서(106), 차속센서 및 브레이크스위치 등의 각종 센서로부터 신호를 받은 ECU(108)가 능동적으로 제어하여, 차량의 운전상태에 따라서 적절한 쇽업소버(102)의 댐핑력을 형성할 수 있도록 한 것이다.That is, the shock absorber 102 having the actuator 100 integrally installed to control the fluid flow therein receives signals from various sensors such as the G-sensor 104, the steering angle sensor 106, the vehicle speed sensor, and the brake switch. The ECU 108 is actively controlled to form an appropriate damping force of the shock absorber 102 according to the driving state of the vehicle.
그러나, 상기한 바와 같은 전자제어 서스펜션에 사용되는 쇽업소버(102)는 그 내부구조가 매우 복잡하고 고가이어서, 중/소형 차량에는 적용하기에 곤란한 문제점이 있다.However, the shock absorber 102 used in the electronically controlled suspension as described above has a problem that its internal structure is very complicated and expensive, so that it is difficult to apply to a medium / small vehicle.
이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 종래에 사용되고 있는 일반적인 쇽업소버를 사용하면서도 쇽업소버의 댐핑력을 차량의 운행상태에 따라서 적절히 가변시킬 수 있도록 함으로써, 저렴한 비용으로 차량의 조종안전성 및 승차감을 모두 개선시킬 수 있도록 한 차량 쇽업소버의 댐핑력 가변장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the problems described above, by using a conventional shock absorber used in the prior art by allowing the damping force of the shock absorber to be appropriately changed according to the driving state of the vehicle, the vehicle at a low cost The purpose of the present invention is to provide a damping force variable device of a vehicle shock absorber to improve both the driving safety and the ride comfort of the vehicle.
도 1은 종래 기술에 의한 전자제어 서스펜션의 구성을 설명한 도면,1 is a view for explaining the configuration of the electronic control suspension according to the prior art,
도 2는 본 발명에 따른 차량 쇽업소버의 댐핑력 가변장치의 구조를 도시한 도면,2 is a view showing the structure of a damping force variable device of a vehicle shock absorber according to the present invention;
도 3은 본 발명의 원리를 설명한 도면이다.3 illustrates the principles of the present invention.
<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>
1; CTBA (Composite Torsion Beam Axle)One; CTBA (Composite Torsion Beam Axle)
3; 쇽업소버5; 유압실린더3; Shock absorber 5; Hydraulic cylinder
7; 유압펌프9; 솔레노이드유압밸브7; Hydraulic pump 9; Solenoid Hydraulic Valve
11; 컨트롤러13; 모드셀렉트스위치11; A controller 13; Mode select switch
15; 차속센서17; 조향각센서15; Vehicle speed sensor 17; Steering Angle Sensor
19; 스로틀포지션센서21; 스톱램프스위치19; Throttle position sensor 21; Stop lamp switch
상기한 바와 같은 목적을 달성하기 위한 본 발명 차량 쇽업소버의 댐핑력 가변장치는 쇽업소버의 일단에 연결되어 상기 쇽업소버의 일단을 차체의 수평방향으로 이동시킬 수 있도록 설치된 직선이동액츄에이터와;The damping force variable device of the vehicle shock absorber of the present invention for achieving the object as described above is connected to one end of the shock absorber linear movement actuator installed to move the one end of the shock absorber in the horizontal direction of the vehicle body;
상기 직선이동액츄에이터의 작동 에너지를 공급하는 동력원과;A power source for supplying operating energy of the linearly moving actuator;
차량의 운전상태를 감지하는 센서들과;Sensors for detecting a driving state of the vehicle;
상기 센서들의 신호를 받아 상기 직선이동액츄에이터를 제어하는 컨트롤수단으로 구성된 것을 특징으로 한다.It is characterized in that the control means for controlling the linear movement actuator in response to the signals of the sensors.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.
도 2는 본 발명에 따른 차량 쇽업소버의 댐핑력 가변장치의 구성을 CTBA(Composite Torsion Beam Axle;1)에 적용한 사례를 도시하고 있는 바, 쇽업소버(3)의 일단을 차체의 수평방향을 따라서 이동시킬 수 있도록 직선이동액츄에이터를 구비함으로써, 상기 쇽업소버(3)가 수직선에 대하여 기울어진 상태를 가변시킬 수 있는 메커니즘으로 되어 있다.FIG. 2 shows an example in which the configuration of the damping force variable device of the vehicle shock absorber according to the present invention is applied to the CTBA (Composite Torsion Beam Axle; 1), with one end of the shock absorber 3 along the horizontal direction of the vehicle body. By providing the linear movement actuator to move, the shock absorber 3 is a mechanism capable of varying the inclined state with respect to the vertical line.
즉, 쇽업소버(3)의 일단에 연결되어 상기 쇽업소버(3)의 일단을 차체의 수평방향으로 이동시킬 수 있도록 설치된 직선이동액츄에이터와, 상기 직선이동액츄에이터의 작동 에너지를 공급하는 동력원과, 차량의 운전상태를 감지하는 센서들과, 상기 센서들의 신호를 받아 상기 직선이동액츄에이터를 제어하는 컨트롤수단으로 구성된 것이다.That is, a linear movement actuator connected to one end of the shock absorber 3 so as to move one end of the shock absorber 3 in the horizontal direction of the vehicle body, a power source for supplying the operating energy of the linear movement actuator, and the vehicle. Sensors for detecting the operating state of the control unit for receiving the signal of the sensor to control the linear movement actuator.
본 실시예에서, 상기 직선이동액츄에이터는 쇽업소버(3)의 하측단과 차축(CTBA)의 사이에 설치된 유압실린더(5)로 구성하였는데, 이외에 상기 직선이동액츄에이터를 쇽업소버의 상측단과 차체 사이에 설치하는 구성도 가능하며, 직선이동액츄에이터로서 전기적인 에너지에 의해 작동되는 리니어 모터 등이 사용될 수도 있다.In the present embodiment, the linear actuator is composed of a hydraulic cylinder (5) installed between the lower end of the shock absorber (3) and the axle (CTBA), in addition to the linear movement actuator is installed between the upper end of the shock absorber and the vehicle body. It is also possible to configure, and a linear motor or the like operated by electrical energy may be used as the linear movement actuator.
상기 동력원은 유압펌프(7)로 구성하였으며, 상기 컨트롤수단은 상기 유압펌프(7)로부터의 유압을 상기 유압실린더(5)에 공급하는 상태를 전환하는 솔레노이드유압밸브(9)와, 상기 센서들로부터의 전기적 신호에 따라 상기 솔레노이드유압밸브(9)를 제어하는 전자제어유닛(11)으로 구성하였다.The power source is composed of a hydraulic pump (7), the control means is a solenoid hydraulic valve (9) for switching the state of supplying the hydraulic pressure from the hydraulic pump (7) to the hydraulic cylinder (5), and the sensors An electronic control unit 11 for controlling the solenoid hydraulic valve 9 in accordance with the electrical signal from the configuration.
상기 솔레노이드유압밸브(9)는 4포트 3위치 솔레노이드밸브로서 상기 유압실린더(5)의 피스톤로드가 확장, 수축 및 유지의 3가지 상태로 제어될 수 있도록 되어 있는바, 도면상 좌측으로부터 1위치에서 피스톤로드의 수축, 2위치에서 유지, 3위치에서 확장이 이루어질 수 있도록 되어 있다.The solenoid hydraulic valve 9 is a four-port three-position solenoid valve so that the piston rod of the hydraulic cylinder 5 can be controlled in three states of expansion, contraction and maintenance. The piston rod is contracted, held in two positions, and expanded in three positions.
한편, 상기 전자제어유닛(11)이 차량의 상태를 파악하기 위해 입력 받는 신호를 제공하는 센서들은 변속레버의 모드 선택 상태를 알려주는 모드셀렉트스위치(13)와, 차속센서(15)와, 조향각센서(17)와, 스로틀포지션센서(19)와 및 스톱램프스위치(21)로 구성하였다.On the other hand, the sensors for providing a signal received by the electronic control unit 11 to determine the state of the vehicle, the mode select switch 13 for indicating the mode selection state of the shift lever, the vehicle speed sensor 15, the steering angle The sensor 17, the throttle position sensor 19, and the stop lamp switch 21 were comprised.
참고적으로, 상기한 바와 같은 구성의 차량 쇽업소버의 댐핑력 가변장치는 상기 CBTA(1)이외의 다른 방식의 현가장치에도 용이하게 적용될 수 있음은 물론이다.For reference, the damping force variable device of the vehicle shock absorber having the configuration described above can be easily applied to the suspension of the other system other than the CBTA (1).
상기 차량 쇽업소버의 댐핑력 가변장치는 상기 전자제어유닛(11)이 상기 센서들로부터 입력 받은 신호에 따라 차량의 좌우에 설치된 상기와 같은 쇽업소버(3)들이 수직선에 대하여 기울어진 상태를 각각 독립적으로 제어함으로써, 각 쇽업소버(3)들의 댐핑력을 변화시키게 된다.The damping force variable device of the vehicle shock absorber independently of the state in which the shock absorbers 3 installed on the left and right sides of the vehicle according to the signal input from the sensors are inclined with respect to the vertical line. By controlling with, the damping force of each shock absorber 3 is changed.
즉, 쇽업소버(3)가 수직선에 대해 기울어진 각도에 따라서 차축의 상승 및 하강에 의해 쇽업소버(3)의 축방향으로 작용하는 속도의 크기가 변화하므로, 작용하는 속도에 따라 쇽업소버(3)의 댐핑력이 변화하는 현상을 이용한 것으로, 도 3에서 차축의 수직 이동속도를 V, 쇽업소버(3)의 댐핑계수를 C 라고 할 때, 쇽업소버(3)가 수직인 경우의 댐핑력은 F1=CV이고, 쇽업소버(3)가 30도 기울어진 경우의 댐핑력은 F2= CV*COS(30)이며, 이때 실질적으로 서스펜션의 거동에 영향을 주게 되는 상기 F2의 수직방향 등가 댐핑력을 보면, F3=F2*COS(30)=CV*COS(30)*COS(30)=0.75CV로서 쇽업소버(3)가 30도 기울어진 경우 25%의 댐핑력 감소가 발생되는 바, 이와 같은 원리를 이용한 것이다.That is, since the magnitude of the speed acting in the axial direction of the shock absorber 3 changes due to the rise and fall of the axle according to the angle in which the shock absorber 3 is inclined with respect to the vertical line, the shock absorber 3 depends on the acting speed. The damping force of the damper force is changed. When the vertical movement speed of the axle is V and the damping coefficient of the shock absorber 3 is C, the damping force when the shock absorber 3 is vertical is The damping force when F1 = CV and the shock absorber 3 is inclined 30 degrees is F2 = CV * COS 30, where the vertical equivalent damping force of F2, which substantially affects the behavior of the suspension, is As shown, F3 = F2 * COS (30) = CV * COS (30) * COS (30) = 0.75CV, resulting in a 25% damping force reduction when the shock absorber 3 is tilted 30 degrees. It is using the principle.
상기 전자제어유닛(11)은 궁극적으로 상기한 바와 같이 쇽업소버(3)가 수직선에 대하여 기울어진 각도를 제어함으로써 차량의 조종안정성 및 승차감을 향상시키게 되는 것이다.The electronic control unit 11 ultimately improves the steering stability and ride comfort of the vehicle by controlling the angle at which the shock absorber 3 is inclined with respect to the vertical line.
즉, 모드셀렉트스위치(13)가 노멀(NORMAL)모드인 경우에는 댐핑력이 최소가 되도록 쇽업소버(3)를 수직선에 대해 크게 기울이고, 스포츠(SPORT) 모드인 경우에는 댐핑력이 최대가 되도록 쇽업소버(3)의 기울기를 적게 하여 각각 승차감우선의 상태와 조종안정성 우선의 상태를 각각 구현하도록 하며, 오토(AUTO)모드의 경우에는 차량의 자세 및 가감속상태를 다른 센서들로부터 감지하여 그에 따라 쇽업소버(3)의 수직선에 대한 기울기를 제어하게 된다.That is, when the mode select switch 13 is in the NORMAL mode, the shock absorber 3 is inclined to the vertical line to minimize the damping force, and when the mode select switch 13 is in the SPORT mode, The tilt of the absorber 3 is reduced so as to realize the state of ride comfort priority and steering stability priority, respectively.In the case of AUTO mode, the attitude and acceleration / deceleration of the vehicle are detected from other sensors accordingly. The inclination of the shock absorber 3 with respect to the vertical line is controlled.
스로틀포지션센서(19)로부터 차량의 가속신호가 검출되면 스쿼트(SQUAT)를 줄이기 위해 쇽업소버(3)의 수직선에 대한 기울기를 작게 하여 댐핑력이 높아지게 하고, 브레이크 작동시에는 상기 스톱램프스위치(21)의 신호로부터 다이브(DIVE)를 억제하도록 제어가 이루어지며, 조향각센서(17)로부터의 신호가 입력되면 상기 차속센서(15)로부터 얻어진 차속 정보에 따라 선회 외륜측의 댐핑력을 높아지도록 쇽업소버(3)를 제어하여 차량의 롤을 억제하도록 제어하게 된다.When the acceleration signal of the vehicle is detected from the throttle position sensor 19, the damper force is increased by decreasing the inclination with respect to the vertical line of the shock absorber 3 so as to reduce squat, and the stop lamp switch 21 when the brake is operated. The control is performed to suppress the dive from the signal of (), and when the signal from the steering angle sensor 17 is inputted, the shock absorber is increased to increase the damping force of the turning outer ring side according to the vehicle speed information obtained from the vehicle speed sensor 15. (3) is controlled to suppress the roll of the vehicle.
이상과 같이 본 발명에 의하면, 종래에 사용되고 있는 일반적인 쇽업소버를 사용하면서도 쇽업소버의 댐핑력을 차량의 운행상태에 따라서 적절히 가변시킬 수 있도록 함으로써, 저렴한 비용으로 차량의 조종안전성 및 승차감을 모두 개선시킬 수 있다.As described above, according to the present invention, the damping force of the shock absorber can be appropriately changed according to the driving state of the vehicle while using the conventional shock absorber used in the related art, thereby improving both the driving safety and the riding comfort of the vehicle at a low cost. Can be.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020076563A KR20040048638A (en) | 2002-12-04 | 2002-12-04 | damping force changing apparatus for a vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020076563A KR20040048638A (en) | 2002-12-04 | 2002-12-04 | damping force changing apparatus for a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20040048638A true KR20040048638A (en) | 2004-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020020076563A KR20040048638A (en) | 2002-12-04 | 2002-12-04 | damping force changing apparatus for a vehicle |
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| Country | Link |
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| KR (1) | KR20040048638A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101138084B1 (en) * | 2006-07-25 | 2012-04-24 | 주식회사 만도 | Damping Valve of Power Steering Apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967111A (en) * | 1982-10-07 | 1984-04-16 | Fuji Heavy Ind Ltd | Front wheel suspension device of automobile |
| JPH0277113U (en) * | 1988-12-05 | 1990-06-13 | ||
| JPH02283509A (en) * | 1989-04-25 | 1990-11-21 | Mitsubishi Motors Corp | Macpherson strut type suspension |
| JPH0589022U (en) * | 1991-03-01 | 1993-12-03 | 泰明 肥田 | A device to prevent roll phenomenon and side shake by making all wheels have a certain angle that is not perpendicular to the road surface, especially when curving in an automobile |
-
2002
- 2002-12-04 KR KR1020020076563A patent/KR20040048638A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5967111A (en) * | 1982-10-07 | 1984-04-16 | Fuji Heavy Ind Ltd | Front wheel suspension device of automobile |
| JPH0277113U (en) * | 1988-12-05 | 1990-06-13 | ||
| JPH02283509A (en) * | 1989-04-25 | 1990-11-21 | Mitsubishi Motors Corp | Macpherson strut type suspension |
| JPH0589022U (en) * | 1991-03-01 | 1993-12-03 | 泰明 肥田 | A device to prevent roll phenomenon and side shake by making all wheels have a certain angle that is not perpendicular to the road surface, especially when curving in an automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101138084B1 (en) * | 2006-07-25 | 2012-04-24 | 주식회사 만도 | Damping Valve of Power Steering Apparatus |
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