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Oil-gas interconnection suspension with self-adaptive damping and adjustable roll stiffness

An adjustable and adaptive technology, applied in suspension, elastic suspension, transportation and packaging, etc., can solve problems such as insufficient installation space for vehicle chassis, high manufacturing cost of oil-gas interconnected suspension, and complex interconnected suspension structure. Achieve excellent handling stability, good design flexibility, and avoid the effect of vehicle rollover

Pending Publication Date: 2022-05-27
SHANDONG MEICHEN ADVANCED POLYMER MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing two-axis oil-air interconnected suspension with adjustable stiffness and adaptive damping requires as many as 10 electromagnetic proportional flow control valves
At present, most of these solenoid valves are imported products, which are expensive, resulting in high manufacturing costs for oil-gas interconnected suspensions
In addition, the existing interconnected suspension structure is relatively complicated, and the vehicle chassis does not have enough installation space, resulting in limited practical application

Method used

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  • Oil-gas interconnection suspension with self-adaptive damping and adjustable roll stiffness
  • Oil-gas interconnection suspension with self-adaptive damping and adjustable roll stiffness
  • Oil-gas interconnection suspension with self-adaptive damping and adjustable roll stiffness

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Embodiment 1

[0029] Attached below figure 1 The present invention will be further described. The oil-gas interconnection suspension system of the present invention is mainly composed of five hydraulic components: hydraulic cylinder, accumulator, control valve, hydraulic pipeline and required connecting pieces. These hydraulic components usually work in conjunction with air springs, which support vehicle loads and provide some vertical stiffness of the suspension. The basic structure of the biaxial oil and gas interconnected suspension system in the present invention is as follows: figure 1 shown.

[0030] The four hydraulic cylinders 101a, 101b, 101c, and 101d are located at the four corners of the biaxial suspension system, respectively. The four hydraulic cylinders are constituted by upper chambers 111a, 116a, 115a, 117a and lower chambers 111b, 116b, 115b, 117b, respectively. The upper chamber and the lower chamber are separated by pistons 112, respectively. The piston rods 113 of ...

Embodiment 2

[0038] like figure 2 As shown, additional hydraulic valves 108a and 108b may be added at the inlets of accumulators 103a and 103b, respectively, to provide additional roll damping. The hydraulic valve controls the flow of oil into and out of the accumulator, and it produces a much greater damping effect in the roll direction than in the vertical direction. If there are no additional hydraulic valves 108a and 108b at the inlet of the accumulator, the suspension roll damping characteristics are determined by 104a and 104b, which is similar to a shock absorber in a conventional independent suspension. The main purpose of this embodiment is to enhance the roll damping of the suspension.

Embodiment 3

[0040] As the relative roll angle of the suspension increases, the air pressure in the primary accumulators 103a, 103b will increase accordingly. However, high air pressure is a potential risk for hydro-pneumatic suspension systems. This hidden danger can be solved by adding an auxiliary accumulator 109a and 109b next to the main accumulators 103a and 103b, respectively. like image 3 As shown, adding auxiliary accumulators to each hydraulic circuit results in a smaller volume and lower operating pressure for the main accumulator. The initial air pressure value of the auxiliary accumulator is set to the pre-warning air pressure. When the oil pressure reaches the pre-warning pressure, the auxiliary accumulator will be activated to prevent safety hazards in the suspension system due to excessive pressure. This design helps reduce the size of the main accumulator and the operating pressure in the interconnected suspension system. Therefore, adding auxiliary accumulators to on...

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Abstract

The invention relates to an oil-gas interconnection suspension with self-adaptive damping and adjustable roll stiffness, which comprises at least four hydraulic cylinders and two hydraulic loops, the hydraulic cylinders are respectively positioned at four corners of a suspension system, each hydraulic cylinder comprises an upper chamber and a lower chamber, and the upper chamber and the lower chamber are separated by a piston; the first hydraulic loop is formed by communicating a lower cavity of a left front hydraulic cylinder of the suspension, an upper cavity of a right front hydraulic cylinder, a lower cavity of a left rear hydraulic cylinder and an upper cavity of a right rear hydraulic cylinder through pipelines; the second hydraulic loop is formed by communicating an upper cavity of a left front hydraulic cylinder of the suspension, a lower cavity of a right front hydraulic cylinder, an upper cavity of a left rear hydraulic cylinder and a lower cavity of a right rear hydraulic cylinder through pipelines; the first hydraulic loop and the second hydraulic loop are each provided with an energy accumulator and a control valve, and therefore the functions of being capable of adjusting the roll stiffness and self-adaptive damping are achieved. The control stability and smoothness of the vehicle can be improved, the satisfactory damping effect can be achieved by using a small number of control valves, and therefore the control valve has the advantages of being simple in structure and low in cost.

Description

technical field [0001] The invention relates to the technical field of vehicle suspension, in particular to an oil-gas interconnected suspension with adaptive damping and adjustable roll stiffness. Background technique [0002] Vehicle suspension systems play a key role in reducing body roll motion, especially when the vehicle is engaged in extreme cornering maneuvers. A stiffer suspension system can greatly reduce the vehicle's tendency to roll over. Good ride comfort requires a less rigid suspension system. Therefore, various technologies have been introduced to alleviate the contradiction between vehicle handling stability and ride comfort. One way to do this is to use a hydro-pneumatic interconnected suspension system, whose stiffness and damping characteristics can be easily adjusted. Compared with the independent suspension system, the hydraulic interconnected suspension system can provide lower vertical stiffness to obtain better ride comfort, and at the same time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/052B60G17/08B60G17/015
CPCB60G17/052B60G17/08B60G17/0152B60G2202/152B60G2202/154B60G2202/24B60G2202/412B60G2202/413B60G2202/414
Inventor 阿米尔·卡杰普尔卢玉坤李瑞龙刘业刚
Owner SHANDONG MEICHEN ADVANCED POLYMER MATERIALS TECH CO LTD
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