Electronically open-loop or closed-loop controlled air spring system, air spring system and method for height regulation of a vehicle

2:

• The air spring system as claimed in claim 1, wherein the at least one switching valve of the number of switching valves is switched in a manner which is actuated in a pulsed way for the implementation of the switching period of the number of sequential switching periods.

4:

• The air spring system as claimed in claim 1, wherein the open/closed parameter comprises an absolute specification of the open proportion of the open valve state and/or the closed proportion of the closed valve state in the switching period.

5:

• The air spring system as claimed in claim 1, wherein the open/closed parameter comprises a relative specification of the open proportion of the open valve state and/or the closed proportion of the closed valve state in the switching period.

6:

• The air spring system as claimed in claim 1, wherein the dimension of the open/closed parameter indicates the open proportion of the open valve state and the closed proportion of the closed valve state in the switching period in percent.

7:

• The air spring system as claimed in claim 6, wherein the open/closed parameter assumes a value from the value range between 65% and 75%.

8:

• The air spring system as claimed in claim 1, wherein the value of the open/closed parameter is variable during the height regulation of the vehicle, with the result that the speed of the height regulation of the vehicle is selectively constant or variable.

9:

• The air spring system as claimed in claim 1, wherein the frequency of the switching period of the actuation of the at least one switching valve of the number of switching valves is defined in such a way that the height regulation of the vehicle takes place uniformly.

10:

• The air spring system as claimed in claim 9, wherein the frequency of the switching period is selected from a value range comprising the values of greater than or equal to 5 Hz and less than or equal to 20 Hz.

12:

• The air spring installation as claimed in claim 11, wherein the at least one throttle or flow resistance element is arranged in the main pneumatic line between the air dryer and the compressed air connector and/or in the compressed air supply line between the compressed air connector and the air spring system.

14:

• The method as claimed in claim 13,
• wherein determining a starting height and a target height and/or checking whether the target height can be reached and/or defining of the open/closed parameter which is necessary for the specified speed take/takes place based on the previously determined vehicle heights, and taking place with consideration of further parameters.

15:

• The method as claimed in claim 13, further comprising closing the at least one actuated switching valve of the number of switching valves after the desired target height is reached.

16:

• The method as claimed in claim 13, wherein the actuation of the at least one switching valve of the number of switching valves takes place in a pulsed manner for the implementation of the switching period of the number of sequential switching periods.

17:

• The method as claimed in claim 16, wherein the at least one switching valve, which is actuated in a pulsed manner of the number of switching valves being actuated in a pulsed manner with a frequency, based on the previously determined open/closed parameter, the open/closed parameter being specified as an open proportion of the open valve state and/or a closed proportion of the closed valve state in the switching period, with the result that the height regulation of the vehicle takes place uniformly.

18:

• The method as claimed in claim 13, wherein a separate actuation of the front axle and/or rear axle takes place, and/or a separate actuation of individual air springs of the number of air springs takes place.