KR20080051334A - A anti-roll control system with bump stopper for a vehicle - Google Patents

Abstract

An anti-roll control system integrated with a bump stopper of a vehicle is provided to optimize suspension ride and handling performance by changing roll stiffness, adjusting the vehicle height, and controlling the characteristic of the bump stopper. An anti-roll control system integrated with a bump stopper of a vehicle is composed of: a vehicle body(30); an axle(40) rotatably supporting wheels at both sides of the vehicle; a vehicle height sensor(50) installed between the vehicle body and the axle to detect a height change value between the vehicle body and the axle according to the height change of the vehicle; an anti-roll adjusting unit(60) adjusting rolling of the vehicle by changing hydraulic pressure supplied to first and second chambers(62,64) according to a driving control signal input from a control unit(70); and the control unit generating a driving control signal if a height change value of the vehicle detected in the vehicle height sensor is over a pre-set height change value of the vehicle. The anti-roll adjusting unit comprises the first chambers combined with both ends of the vehicle body, respectively; the second chambers combined between the lower part of each first chamber and a lower control arm(90), respectively; and an actuator(66) assembled with the first and second chambers to form a passage.

Description

Anti-roll control system with bump stopper for vehicle {a anti-roll control system with bump stopper for a vehicle}

1 is a block diagram of an embodiment of the present invention

<Explanation of Signs of Major Parts of Drawings>

30: body 40: axle

50: height sensor 60: anti-roll control unit

62: first chamber 62: second chamber

66: actuator 70: control unit

80: selector switch 90: lower control arm

G: spacing

The present invention relates to a bump stopper integrated anti-roll control system of a vehicle, and more specifically, to configure two chambers (up and down) so that the lower chamber serves as a bump stopper and the upper chamber is anti- It relates to the role of the anti-roll function.

The bump stopper system to which the present invention relates is a suspension mounted on a lower arm or mounted on a body, such as a double wishbone suspension, to act on a counterplate. Corresponds to the device.

Conventionally, the bump stopper system uses a rubber or urethane bump stopper to prevent the suspension force from entering the passenger compartment while preventing the suspension system from impacting the ground with the body or frame. There have been many examples of preventing damage due to metal to metal contact and preventing excessive vehicle posture change during loading.

Meanwhile, a stabilizer bar, also known as an anti-roll bar in the related art, has a degree of freedom and is mounted on a lower arm so that the free trajectory and mechanical position of the lower arm are lower. Interference occurs, requiring a control link, and taking up space in a specific location to ensure the ride and handling performance of the suspension system. Not only do they cause problems, but they also cause design changes to the final stage of the design, causing a lot of time and money.

Among the known techniques of the prior art, an anti-roll control system using hydraulic pressure has a bar made of spring steel and thus still suffers from disadvantages in layout.

In addition, in the prior art, a device without a bar and operated by a hydraulic circuit requires a separate mechanism such as a shock absorber, so that a gap between the tire and the tire when steering on a layout is eliminated. In addition to this, it generates disadvantageous structures such as lack of gap with the steering tie rod during full bump & rebound & full turn.

As described above, the stabilizer bar is often disadvantageous in the layout, and in particular, a vehicle requiring off-road frequency needs to set a large amount of bump & rebound stroke. In the case of a full stroke, if the steering system is full turn (especially when the wide tires are attached to the ball & nut steering system), interference may be caused by the stabilizer bar.

In addition, the prior art of the control link (control link) method using the above-mentioned hydraulic pressure does not solve the layout problem, the hydraulic circuit shock absorber (shock absober) method takes a specific space on the mechanical motion space by a separate component It is unsuitable for off road vehicles.

The present invention has been made in view of the above-mentioned conventional problems, and its object is to reduce the space in which a conventional suspension device, such as a stabilizer bar, is mounted so as to improve the degree of freedom of design, as well as occurring according to the driving state of the vehicle. The present invention provides an anti-roll control system incorporating a bump stopper integrated in a vehicle that can improve driving stability and ride comfort of a vehicle by adjusting a suspension characteristic of a vehicle body.

The present invention provides a vehicle body for achieving the above object; An axle on which wheels are rotatably supported on both sides of the vehicle; A garage sensor installed between the vehicle body and the axle to detect a height change value between the vehicle body and the axle according to the height change of the vehicle; A controller configured to generate a driving control signal when the detected height change value of the vehicle is equal to or greater than a preset height change value of the vehicle; A first chamber coupled to both ends of the vehicle body, a second chamber respectively mounted below each of the first chambers, and an actuator coupled to form the respective first and second chambers and a flow path, It is coupled between the vehicle body and the axle in a predetermined direction to control the roll of the vehicle by varying the hydraulic pressure supplied into the respective first chamber and the second chamber according to the driving control signal input from the controller. It characterized in that it comprises a roll adjustment unit.

In addition, the present invention is characterized in that spaced at a predetermined interval (GAP) without contacting the second chamber on the upper end of the lower control arm.

Hereinafter, the specific technical details of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of the present invention, the bump stopper integrated anti-roll control system of the present invention

A vehicle body 30;

An axle 40 rotatably supported on both sides of the vehicle;

A garage sensor 50 installed between the vehicle body 30 and the axle 40 to detect a height change value between the vehicle body 30 and the axle 40 according to the height change of the vehicle;

A first chamber 62 coupled to both ends of the vehicle body 30, a second chamber 64 mounted between the lower portion of the first chamber 62 and the lower control arm 90, respectively; An actuator 66 coupled to each of the first and second chambers 62 and 64 to form a flow path, wherein each of the first chambers 62 corresponds to a driving control signal input from the controller 70; And anti-roll adjusting unit 60 for adjusting the roll (ROLL) of the vehicle by varying the hydraulic pressure supplied into the second chamber (64);

And a controller 70 generating a driving control signal when the height change value of the vehicle detected by the garage sensor 50 is equal to or greater than the preset height change value of the vehicle.

In the anti-roll adjusting unit 60 of the present invention, the first chamber 62 mounted above the two chambers is configured to adjust the anti-roll function, and the second chamber mounted below. The chamber 64 is a configuration for adjusting the bump stopper function.

In addition, the actuator 66 may use a pneumatic cylinder or a hydraulic cylinder according to the classification of pneumatic and hydraulic, and may use a configuration applied to a general vehicle height adjustment control device.

The anti-roll adjusting unit 60 is coupled between the vehicle body 30 and the lower control arm 90 in a predetermined direction so as to correspond to each first chamber corresponding to the driving control signal input from the control unit 70. 62 and the hydraulic pressure supplied into the second chamber 64 are adjusted to adjust the roll of the vehicle.

The control unit 70 of the present invention controls the anti-roll control operation of the vehicle as a whole, and if the height change value of the vehicle detected by the garage sensor 50 is equal to or greater than the preset height change value of the vehicle, the first chamber 62. And a driving control signal to the anti-roll adjusting unit 60 to reduce the hydraulic pressure supplied into the second chamber 64, and thus the hydraulic pressure of the first chamber 62 and the second chamber 64 is reduced. If the displacement is also increased.

The controller 70 increases the oil pressure supplied to the first chamber 62 and the second chamber 64 when the height change value of the vehicle detected by the garage sensor 50 is equal to or less than the preset height change value of the vehicle. The driving control signal is supplied to the anti-roll adjusting unit 60.

On the other hand, in the present invention, if the configuration further comprises a selection switch 80 for manually operating the roll control of the vehicle to control the driving of the anti-roll control unit 60 according to the switching state of the selection switch 80 It becomes possible.

For reference, the anti-roll control by the selection switch 80, first, by selecting the conditions to be adjusted by dividing the corresponding conditions, the control unit 70 is the anti-roll control operation according to the switching state of the selected selection switch 80 Can be implemented.

That is, the user can control the operation of the anti-roll adjusting unit 60 by visually identifying the state of the road surface and adjusting the user to select a corresponding position of the anti-roll adjusting switch provided separately.

In the present invention, since it has a lever ratio of 20 to 30% compared to the movement of the wheel center, the structure having a radius of 50 mm and a height of 100 mm exhibits a sufficient effect to minimize energy loss due to hydraulic operation. By expanding the hydraulic circuit method and reducing the operating height, it is possible to increase the design freedom by integrally with the bump stopper and to change the roll stiffness through the opening / closing adjustment of the connecting circuit. It becomes possible.

For reference, the multi-selective anti-roll adjustment function according to the connection state of the A, B, C, and D ports shown in the actuator 66 will be described as follows.

First, the A and C ports of the actuator 66 are connected, and the Active Roll Control function is performed in the state where the B and D ports are connected to perform active roll control, and each port of the actuator 66 is connected. By adjusting the hydraulic pressure supplied to the corresponding stiffness will be adjusted.

For example, the roll stiffness is adjusted by adjusting the hydraulic pressure supplied to the A and C ports of the actuator 66, and the bump stopper stiffness is adjusted by adjusting the hydraulic pressure supplied to the B and D ports of the actuator 66.

In addition, by adjusting the hydraulic pressure supplied to each port of the actuator 66, it is possible to adjust the garage.

As described above, the present invention includes: a height sensor installed between the vehicle body and the axle and detecting a height change value between the vehicle body and the axle according to the height change of the vehicle; A controller configured to generate a driving control signal when the detected height change value of the vehicle is equal to or greater than a preset height change value of the vehicle; A first chamber coupled to both ends of the vehicle body, a second chamber respectively mounted below each of the first chambers, and an actuator coupled to form the respective first and second chambers and a flow path, It is coupled between the vehicle body and the axle in a predetermined direction to control the roll of the vehicle by varying the hydraulic pressure supplied into the respective first chamber and the second chamber according to the driving control signal input from the controller. Roll adjuster; According to the present invention, the suspension ride & handling performance can be optimized by changing the stiffness of the roll, adjusting the garage height, adjusting the bump stopper characteristics, and the like. It will be possible to improve.

In addition, according to the present invention, it is possible to reduce component costs since the components such as a stabilizer bar, a control link, and a stabilizer bar mounting bush are not used. Not only can the assembly process be reduced, but it can also contribute to the weight reduction of the vehicle.

Claims (3)

A vehicle body 30; An axle 40 rotatably supported on both sides of the vehicle; A garage sensor 50 installed between the vehicle body 30 and the axle 40 to detect a height change value between the vehicle body 30 and the axle 40 according to the height change of the vehicle; A first chamber 62 coupled to both ends of the vehicle body 30, a second chamber 64 mounted between the lower portion of the first chamber 62 and the lower control arm 90, respectively; An actuator 66 coupled to each of the first and second chambers 62 and 64 to form a flow path, wherein each of the first chambers 62 corresponds to a driving control signal input from the controller 70; And anti-roll adjusting unit 60 for adjusting the roll (ROLL) of the vehicle by varying the hydraulic pressure supplied into the second chamber (64); And a control unit 70 for generating a driving control signal when the height change value of the vehicle detected by the garage sensor 50 is equal to or greater than the preset height change value of the vehicle. Control system. 2. The bump stopper integrated anti-roll control system according to claim 1, characterized in that the upper space of the lower control arm (90) is spaced at a predetermined interval (GAP) without contacting the second chamber (64). The method according to claim 1 or 2, further comprising a selection switch (80) capable of manually operating the roll control of the vehicle, wherein the control unit (70) is anti-roll in accordance with the switching state of the selection switch (80). The bump stopper integrated anti-roll control system of the vehicle to control the driving of the adjuster (60).

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