US 12,479,260 B2
Method for operating a damper system of a vehicle
Thomas Witte, Ditzingen-Heimerdingen (DE); and Jochen Liebold, Stuttgart (DE)
Assigned to Dr. Ing. h.c.F. Porsche Aktiengesellschaft, (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Apr. 9, 2024, as Appl. No. 18/630,132.
Claims priority of application No. 102023115399.4 (DE), filed on Jun. 13, 2023.
Prior Publication US 2024/0416707 A1, Dec. 19, 2024
Int. Cl. B60G 17/08 (2006.01); B60G 17/015 (2006.01); B60G 17/0165 (2006.01); B60G 17/019 (2006.01)
CPC B60G 17/08 (2013.01) [B60G 17/0152 (2013.01); B60G 17/0165 (2013.01); B60G 17/019 (2013.01); B60G 2202/24 (2013.01); B60G 2202/416 (2013.01); B60G 2400/204 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for operating a damper system of a vehicle having an active damper and a hydraulic assembly arranged to control the damper, which hydraulic assembly includes a hydraulic pump and at least one control valve, wherein the method comprises:
defining requirements placed upon the damper with regard to dynamics and/or force to be set based on a sensed roadway condition of a route in front of the vehicle in a direction of travel,
defining a minimum rotary speed of the hydraulic pump based on the defined requirements, the defined minimum rotary speed corresponding to the sensed roadway condition;
operating the hydraulic pump at the defined minimum rotary speed;
determining a limit force at which the damper can respond to the sensed roadway condition without requiring an adjustment from the defined minimum rotary speed of the hydraulic pump;
defining an opening of the at least one control valve depending on the defined requirements, the defined opening corresponding to the sensed roadway condition;
setting the defined opening of the at least one control valve;
when a force to be provided by the damper due to changing roadway conditions is less than the limit force, the method comprises changing the defined opening setting of the at least one control valve without adjusting the defined minimum rotary speed, resulting in a dynamic force setting of the damper being set; and
when the force to be provided by the damper due to changing roadway conditions is greater than the limit force, the method comprises changing the defined minimum rotary speed of the hydraulic pump, thereby resulting in a high-value force setting of the damper being set.