Fluid electric energy feedback type semi-active control shock absorber system

Abstract

The invention relates to a fluid electric energy feedback type semi-active control shock absorber system. The fluid electric energy feedback type semi-active control shock absorber system mainly comprises a dual-cylinder hydraulic damping module and a fluid electric energy feedback control module. The dual-cylinder hydraulic damping module comprises a hydraulic working cylinder, an oil storage cylinder, a piston, a hollow piston rod, a compression valve and a compensation valve. The fluid electric energy feedback control module is composed of a hollow piston rod adapter, an energy accumulator, an oil storage cylinder adapter, a hydraulic energy feedback pipe, a hydraulic motor, a power generator and a load control circuit. A round hole is formed in one outer wall of the oil storage cylinder in a drilling mode, and the oil storage cylinder adapter is welded through the round hole. An oil outlet is led out of the top end of the hollow piston rod in the hydraulic working cylinder in the radial direction, and the hollow piston rod adapter is welded to the oil outlet. The fluid electric energy feedback type semi-active control shock absorber system has the beneficial effects that the fluid electric energy feedback type semi-active control shock absorber system can be formed by transforming a traditional dual-cylinder hydraulic damper, on the premise that the basic requirement of automobiles for the damping property of dampers is met, mechanical energy consumed by vibration of a suspension is recycled and converted to electric energy, and the purpose of energy conservation of automobiles is achieved.

Description

Technical field [0001] The invention belongs to the technical field of vehicle suspension shock absorber systems, and in particular relates to a hydraulic and electric energy fed semi-active control shock absorber system. Background technique [0002] The vehicle will be continuously excited by uneven roads during driving, causing vertical vibration of the sprung mass and continuous changes in the dynamic load of the tire, which directly affects the ride comfort and handling stability of the vehicle. The traditional hydraulic shock absorber converts the relative movement of the sprung mass and the unsprung mass into thermal energy dissipation through damping. The energy-feeding suspension converts this part of the vibrational mechanical energy into hydraulic energy or electrical energy, and supplies it to other equipment on the vehicle to reduce the energy consumption of the vehicle. [0003] At present, the structure of vehicle energy feeding suspension system is mainly divided i...

AI Technical Summary

Problems solved by technology

However, the vehicle is continuously excited by the uneven road surface during driving, resulting in reciprocating compression and extension movements of the sprung mass, and the electronically controlled rectifier valve is in a continuous adjustment state, which greatly reduces its service life

At the same time, once the electronically controlled rectifier valve fails, the performance of the shock absorber is difficult to meet the driving requirements of the vehicle

[0007] Among the above-mentioned devices that recover vibrational mechanical energy through energy feedback, Chinese patent 1626370A has the problem that the motor rotor rotates forward and reverse alternately with the reciprocating motion of the suspension, resulting in a large amount of inertia loss and reducing the power generation efficiency of the motor.

Chinese patent CN101749353A and Chinese patent CN103244495A use the structure of the valve to solve the problem of forward and reverse switching of the motor rotor rotation direction and improve the working efficiency of the generator. However, the actual work of a check valve of the hydraulic rectifier bridge will cause the system to fail to work normally. At the same time, it is not easy to maintain; the use of electronically controlled rectifier valves can reduce the hydraulic energy loss generated by the hydraulic rectifier bridge, but it puts forward higher requirements for its service life, which is not suitable for long-term actual use

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