External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control

A technology of oil-pneumatic suspension and solenoid valve, which is applied in the direction of suspension, elastic suspension, transportation and packaging, etc., and can solve the problems of shock absorber failure, low service life, and small application range

Inactive Publication Date: 2009-04-22
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the oil-air suspension is still a passive suspension, the throttling area of ​​the oil on the internal damping valve is fixed, and the opening pressure of the unloading valve is also fixed. Once set, the adjustable damping force cannot be realized.
When the car is driving on a road condition beyond the adaptable range of the damping valve, it will lose the proper damping effect and cause the shock absorber to fail. low life
Therefore, shock absorbers with adjustable damping have appeared on some high-end vehicles, so that the damping force can be adjusted in a large range. Maintenance is inconvenient. At the same time, due to the built-in structure, the requirements for the matching accuracy of the components and the control accuracy of the actuator are relatively high, resulting in difficult processing

Method used

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  • External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control
  • External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control
  • External electromagnetic valve type three-stage damping adjustable hydro-pneumatic suspension for electric control

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a throttle area controllable three-stage damping adjustable oil-pneumatic suspension of the present invention. Including piston 1, cylinder 2, oil pipe 14, damping valve 3, solenoid valve 7, solenoid valve 9, accumulator 8, throttle spool 4, throttle spool 5, throttle spool 10, compression unloading valve 11. Stretching unloading valve 6; wherein the piston 1 divides the inner cavity of the cylinder 2 into two chambers that are not connected to each other, the cylinder 2 is connected to the damping valve 3 through the oil pipe 14, and the damping valve 3 is connected to the accumulator 8 through the oil pipe 14 connected. Wherein the damping valve 3 is composed of a solenoid valve 7, a solenoid valve 9, a throttle valve core 4, a throttle valve core 5, a throttle valve core 10, a compression unloading valve 11 and an expansion unloading valve 6. The opening and closing state of the oil circuit where the throttle spool 5 is located is contro...

Embodiment 2

[0020] Such as figure 2 As shown, a valve-opening pressure-controllable three-stage damping adjustable oil-pneumatic suspension of the present invention. Including piston 1, cylinder 2, oil pipe 14, damping valve 3, solenoid valve 7, solenoid valve 9, accumulator 8, throttle valve core 4, compression unloading valve 11, extension unloading valve 6, extension unloading valve 12 and stretch unloading valve 13; the piston 1 divides the inner cavity of the cylinder 2 into two chambers that are not connected to each other, the cylinder 2 is connected to the damping valve 3 through the oil pipe 14, and the damping valve 3 is connected to the accumulator 8 through the oil pipe 14 . Wherein the damping valve 3 is composed of a solenoid valve 7, a solenoid valve 9, a throttle spool 4, a compression unloading valve 11, an extension unloading valve 6, an extension unloading valve 12, and an extension unloading valve 13. The opening and closing state of the oil circuit where the stretc...

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PUM

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Abstract

The invention relates to an oil gas suspension system for a means of transport, in particular to an external electromagnetic valve type three-stage damp adjustable oil gas suspension system for electric control, and belongs to the field of engineering element or part. The oil gas suspension system comprises a piston, a cylinder, an oil pipe, a damping valve, an energy accumulator, an electric control unit and a vehicle body acceleration sensor, wherein the piston divides the cylinder into two cavities which are not communicated; the upper cavity of the cylinder is provided with an oil discharge orifice which is connected with the external damping valve and the energy accumulator through the oil pipe; and the lower cavity is communicated with the atmosphere. When oil fluid passes through the external damping valve, damping force is adjusted through adjusting the total throttling area of the oil fluid in the damping valve or through controlling the valve opening pressure of an oil circuit in the damping valve. The vehicle body acceleration sensor is used for detecting acceleration signals of the vehicle body; and the electric control unit controls the on/off of the electromagnetic valve based on the detected acceleration signals of the vehicle body, thereby realizing adjustment of the damping force. The oil gas suspension system has the advantages of simple structure, easy realization, simple control and convenient repair.

Description

technical field [0001] The invention relates to an oil-pneumatic suspension system of a transportation tool, in particular to an external electromagnetic valve type three-stage damping adjustable oil-pneumatic suspension which can be used for electric control, and belongs to the field of engineering components or components. Background technique [0002] Hydro-pneumatic suspension, as an automobile suspension system with excellent performance, has a good application prospect in special vehicles and off-road vehicles. During the driving process of the vehicle, the oil-pneumatic suspension alleviates the impact of the ground and attenuates the vibration of the vehicle through the joint action of the accumulator and the oil shock absorber, so as to improve the ride comfort of the car, improve the safety of the car running, and enhance the ride of the car comfort. However, since the oil-pneumatic suspension is still a passive suspension, the throttling area of ​​the oil on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/019B60G17/056B60G11/30
Inventor 杨杰陈思忠吴志成杨林张斌
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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