HYDRAULIC SYSTEM FOR A HYDRAULICALLY ADJUSTABLE VEHICLE SHOCK ABSORBER

Abstract

A hydraulic system for a hydraulically adjustable vehicle shock absorber including a piston and at least one pressure chamber cooperating hydraulically with the piston, a hydraulic pump configured so as to convey the hydraulic fluid (F), and a hydraulic conduit assembly, via which the at least one pressure chamber of the hydraulically adjustable vehicle shock absorber is connected to the hydraulic pump. At least one elastically deformable damping element is in contact with the hydraulic fluid (F).

Claims

1. A hydraulic system comprising: a hydraulic pump configured to convey a hydraulic fluid, a hydraulically adjustable vehicle shock absorber comprising a piston and at least one pressure chamber that cooperates hydraulically with the piston, at least one elastically deformable damping element that is positioned to be in contact with the hydraulic fluid, and a hydraulic conduit assembly via which the at least one pressure chamber of the hydraulically adjustable vehicle shock absorber is connected to the hydraulic pump.

2. The hydraulic system according to claim 1, wherein the at least one pressure chamber further comprises a first pressure chamber and a second pressure chamber, which hydraulically cooperate with the piston in an opposing manner.

3. The hydraulic system according to claim 2, wherein the hydraulic pump comprises: a first port connected to the first pressure chamber via the hydraulic conduit assembly, and a second port connected to the second pressure chamber via the hydraulic conduit assembly, wherein the hydraulic pump is configured to selectively convey the hydraulic fluid (F) from the first port to the second port or vice versa from the second port to the first port.

4. The hydraulic system according to claim 1, wherein the hydraulic pump is an internal gear pump.

5. The hydraulic system according to claim 1, wherein the at least one elastically deformable damping element comprises a foam material.

6. The hydraulic system according to claim 1, wherein the damping element is arranged on the hydraulically adjustable vehicle shock absorber.

7. The hydraulic system according to claim 6, wherein the damping element is arranged in the at least one pressure chamber of the hydraulically adjustable vehicle shock absorber.

8. The hydraulic system according to claim 1, wherein the at least one pressure chamber further comprises a first pressure chamber and a second pressure chamber which hydraulically cooperate with the piston in an opposing manner, and wherein the deformable damping element comprises a first deformable damping element arranged in the first pressure chamber and a second deformable damping element arranged in the second pressure chamber.

9. The hydraulic system according to claim 1, wherein the damping element is arranged on a surface of the piston that delimits the at least one pressure chamber.

10. The hydraulic system according to claim 1, wherein the damping element is arranged on the hydraulic pump.

11. The hydraulic system according to claim 10, wherein the damping element is arranged at at least one port of the hydraulic pump.

12. The hydraulic system according to claim 10, wherein the deformable damping element comprises a first deformable damping element arranged at a first port of the hydraulic pump and a second deformable damping element arranged at a second port of the hydraulic pump.

13. The hydraulic system according to claim 1 further comprising the hydraulic fluid.

14. A vehicle comprising the hydraulic system according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0021] The sole FIGURE shows a hydraulic system for a hydraulically adjustable vehicle shock absorber.

DETAILED DESCRIPTION OF THE INVENTION

[0022] The sole FIGURE shows a hydraulic system 100 according to aspects of the invention for a hydraulically adjustable vehicle shock absorber 10, which, in addition to the hydraulically adjustable vehicle shock absorber 10, comprises a hydraulic pump 11 and a hydraulic conduit assembly 12, via which a hydraulic fluid F can be conveyed to the hydraulically adjustable vehicle shock absorber 10 by means of the hydraulic pump 11.

[0023] The hydraulically adjustable vehicle shock absorber 10 comprises a first pressure chamber 101 and a second pressure chamber 102, both of which are filled with hydraulic fluid F and hydraulically cooperate with a piston 103, to which a piston rod 104 is attached. The two pressure chambers 101, 102 are formed on opposite sides of the piston 103 and consequently hydraulically cooperate in an opposing manner with the piston 103, thus pushing the piston 103 in opposite axial directions during filling of the respective pressure chamber 101, 102. The first pressure chamber 101 is connected to a first hose line 121 of the hydraulic conduit assembly 12 via a port 105, and the second pressure chamber 102 is connected to a second hose line 122 of the hydraulic conduit assembly 12 via a port 106.

[0024] An elastically deformable damping element 107 is arranged on a surface 1031 of the piston 103 that delimits the first pressure chamber 101, which element is in contact with the hydraulic fluid F located in the first pressure chamber 101. A elastically deformable damping element 108 is arranged on a surface 1032 of the piston 103 that delimits the second pressure chamber 102, which element is in contact with the hydraulic fluid F located in the second pressure chamber 102. The two elastically deformable damping elements 107, 108 respectively contain a foam material.

[0025] The hydraulic pump 11 is configured as an internal gear pump and comprises a first port 111 connected to the port 105 of the first pressure chamber 101 via the first hose line 121 and a second port 112 connected to the port 106 of the second pressure chamber 102 via the second hose line 122. The hydraulic pump 11 comprises an electric drive motor 113, which can be operated in both directions of travel. The hydraulic pump 11 is thus configured so as to selectively convey the hydraulic fluid F from the first port 111 to the second port 112 or vice versa from the second port 112 to the first port 111.

[0026] An elastically deformable damping element 114 is arranged on an inner peripheral surface 1111 of the first port 111 of the hydraulic pump 11, which element is in contact with the hydraulic fluid F pumped through the first port 111. An elastically deformable damping element 115 is arranged on an inner peripheral surface 1121 of the second port 112 of the hydraulic pump 11, which element is in contact with the hydraulic fluid F pumped through the first port 112. The two elastically deformable damping elements 114, 115 respectively contain a foam material.