US 11,752,825 B2
Method for operating an air suspension system using a dryer regeneration function
Dierk Hein, Wedemark (DE); Christian Witala, Hannover (DE); Volkan Sirke, Hannover (DE); and Holger Oldenettel, Wedemark (DE)
Assigned to Continental Teves AG & Co. OHG, Frankfurt am Main (DE)
Filed by Continental Teves AG & Co. OHG, Frankfurt am Main (DE)
Filed on Dec. 8, 2021, as Appl. No. 17/545,278.
Claims priority of application No. 10 2020 215 503.8 (DE), filed on Dec. 8, 2020; and application No. 10 2021 201 458.5 (DE), filed on Feb. 16, 2021.
Prior Publication US 2022/0176767 A1, Jun. 9, 2022
Int. Cl. B60G 17/015 (2006.01); B60G 17/052 (2006.01)
CPC B60G 17/0155 (2013.01) [B60G 17/052 (2013.01); B60G 2202/152 (2013.01); B60G 2206/42 (2013.01); B60G 2400/252 (2013.01); B60G 2400/84 (2013.01); B60G 2500/30 (2013.01); B60G 2600/182 (2013.01); B60G 2600/66 (2013.01); B60G 2800/914 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for operating an electronically controllable air suspension system for a motor vehicle, comprising:
raising a ride-height position to a first ride-height position through feeding of compressed air into the air suspension device;
lowering the ride-height position to a second ride-height position through removal of compressed air from the air suspension device subsequent to the raising to the first ride-height;
determining an air quantity ratio based at least partially on an ambient air quality;
checking a first condition whether the determined air quantity ratio is less than a first predetermined air quantity limit value;
determining a saturation level of a dryer;
checking a second condition whether the saturation level of the dryer is greater than a saturation limit value; and
activating a ride-height control function of a control unit when at least one of the first and the second condition is satisfied.