Method for operating an air suspension system using a dryer regeneration function

US11752825B2 · kind B2 · utility

Assignee

• Continental Teves AG & Co. OHG · DE

Inventors

• Dierk Hein · Großburgwedel, DE
• Christian Witala · Hannover, DE
• Volkan Sirke · Hannover, DE
• Holger Oldenettel · Garbsen, DE

Key dates

• Filing date: Dec 8, 2021
• Grant date: Sep 12, 2023
• Expiry date: Dec 8, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2800/914
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An air suspension system for a motor vehicle and a method of operating thereof includes an air suspension device for adjusting a ride-height position of the motor vehicle by the feeding and removal of compressed air into a plurality of air springs. The system also includes a dryer supplied via a compressed-air supply unit which has a compressor driven by an electric motor. A control unit for performing a ride-height control function has instruction for: raising the ride-height position to a first ride-height position; subsequently lowering the ride-height position to a second ride-height position; checking a first condition whether a determined air quantity ratio is less than a first predetermined air quantity limit value; checking a second condition whether a saturation level of the dryer is greater than a saturation limit value, and activating the ride-height control function when either the first or the second condition is satisfied.