Suspension cylinder type energy recovery system and control method thereof

Abstract

The invention relates to the technical field of automobile suspensions, in particular to a suspension cylinder type energy recovery system and a control method thereof. The system comprises a suspension and an energy storage pool. The suspension comprises a lower cylinder body, an upper cylinder body and a piston rod arranged in the upper cylinder body and the lower cylinder body in a penetrating mode. The piston rod is provided with an upper piston at one end of the upper cylinder body and a lower piston at one end of the lower cylinder body; the upper cylinder body is filled with an air medium; the lower cylinder body is filled with an oil medium, and the lower piston is provided with a damping hole which is communicated with a lower rodless cavity and a lower rod cavity in the lower cylinder body; the energy storage tank comprises an energy storage cylinder body which is communicated with the upper rodless cavity of the upper cylinder body through a communication pipeline and a pressure sensing motor which is arranged in the energy storage cylinder body and can move left and right to generate electric energy; the pressure-sensitive motor is a power generation device with an adjustable moving direction; and a speed reducing valve with adjustable valve opening is arranged on the communicating pipeline. The device is simple in structure, and the suspension can be actively controlled through the energy storage pool and the speed reduction valve.

Description

technical field [0001] The invention relates to the technical field of automobile suspension, in particular to a suspension cylinder type energy recovery system and a control method thereof. Background technique [0002] At present, the relevant suspension system, because the general suspension system uses oily medium in a fixed compression state, this is also an important reason why different models have different driving experiences. The damping setting of the suspension is large, which shows that the suspension of the vehicle is hard. The support of the chassis is strong, but the comfort of the vehicle will be greatly reduced when facing bumpy roads. The damping setting of the suspension is small, which shows that the suspension of the vehicle is soft. Although the fine bumps on the road are filtered in place, when facing a large impact, the shock absorption capacity of the suspension is limited, and the body will not be stable enough. [0003] The way of adjusting the d...

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Problems solved by technology

[0002] At present, the relevant suspension system, because the general suspension system uses oily medium in a fixed compression state, this is also an important reason why different models have different driving experiences. The damping setting of the suspension is large, which shows that the suspension of the vehicle is hard. The support of the chassis is strong, but the comfort of the vehicle will be greatly reduced when facing bumpy roads

The damping setting of the suspension is small, which shows that the suspension of the vehicle is soft. Although the fine bumps on the road are well filtered, when facing a large impact, the shock absorption capacity of the suspension is limited, and the vehicle body will not be stable enough.

[0003] The way of adjusting the damping and stiffness of the existing suspension structure is usually to adjust the damping and stiffness by changing the size of the damping hole and adjusting the velocity of the oil flow, but this adjustment method has great limitations. The structure is relatively complicated, and the adjustment is difficult. Second, the vibration energy is completely wasted by this adjustment. Studies have shown that the energy consumed by vehicle vibration is far greater than the energy consumed by vehicle braking. If the vibration energy can be effectively recovered, It can increase the mileage of the car by 20% to 30%, but the current suspension structure usually does not recycle this part of energy, resulting in a waste of energy

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