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Vibration damper, method for operating a vibration damper, control device and motor vehicle

A control device and shock absorber technology, applied in the directions of transportation and packaging, vehicle components, elastic suspension, etc., can solve problems such as valve pump leakage, and achieve the effect of improving driving comfort.

Inactive Publication Date: 2018-05-11
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise there is a risk that the valve is a leak point for the pump

Method used

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  • Vibration damper, method for operating a vibration damper, control device and motor vehicle
  • Vibration damper, method for operating a vibration damper, control device and motor vehicle
  • Vibration damper, method for operating a vibration damper, control device and motor vehicle

Examples

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Embodiment Construction

[0031] figure 1 Shown is a shock absorber 1 with a working cylinder 2 , a piston 3 and a piston rod 4 fastened to the piston 3 . The piston 3 divides the working cylinder into a first working chamber 5 and a second working chamber 6 . The first storage device 7 is connected to the first working chamber 5 via a first fluid path 8 . In this case, the first fluid path 8 has sections 9 and 10 .

[0032] The second storage device 12 is connected to the second working chamber 6 via a second fluid path 14 . As a height adjustment device, the hydraulic device 16 is connected to the first working chamber 5 via a third fluid path 18 comprising sections 9 and 20 . The first fluid path 8 and the third fluid path 18 are therefore partially identical, ie identical in section 9 .

[0033] The second storage device 12 serves as a balancing chamber to balance the amount of oil squeezed out when the piston rod is driven in. In contrast, the first storage device 7 is a reservoir which is ca...

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PUM

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Abstract

The invention relates to a vibration damper having a damping force adjusting device and a height adjusting device for changing the axial position of a piston of the vibration damper, characterized inthat the damping force adjusting device is set in a manner which is dependent on at least one operating parameter of the height adjusting device, wherein, in the case of a change of the at least one operating parameter, a change of at least one operating parameter of the damping force adjusting device also takes place. The invention further relates to a method for operating a vibration damper. Theinvention further relates to a control device. The invention further relates to a motor vehicle.

Description

technical field [0001] The invention relates to a shock absorber, which has a shock absorbing force adjustment device and a height adjustment device for changing the axial position of a piston of the shock absorber. Background technique [0002] Body control of the vehicle body is carried out by means of the height adjustment device. Here, it is known to perform roll or pitch balancing or more generally to achieve a level adjustment of the vehicle body. The influence on the vehicle body can thus be reduced, for example, in the event of sloping ground, such as a sloped position or an uneven roadway or when driving around a curve or when braking. [0003] This function cannot be assumed by conventional, also known as passive, shock absorbers. Instead, an adjusting device is required, with which the relative position of the pistons can be changed actively from the outside via a control device. It is known, for example, to use hydraulic pumps for this purpose. [0004] There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/08
CPCB60G17/08B60G2400/50B60G2400/5182B60G2500/02B60G2500/11B60G2500/30B60G2600/02B60G2600/182B60G2600/184B60G2800/162B60G2800/912B60G2800/9123
Inventor A·托梅E·西蒙A·弗斯特S·海恩H·巴尔曼
Owner ZF FRIEDRICHSHAFEN AG