Patent ID: 11965498
Assignee: ZF CV SYSTEMS EUROPE BV
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A method for operating a pressure control system having a multistage compressor, the method comprising:
outputting, by the multistage compressor in order to fill at least one of a pressure medium reservoir or pressure medium chambers of the pressure control system, a pressure medium compressed multiple times, wherein outputting the pressure medium compressed multiple times includes:
operating the pressure control system in an open mode, which includes:
providing, by a first compression stage of the multi-stage compressor, a pre-compressed pressure medium by compressing the pressure medium drawn from an ambient environment, and further compressing, by a second compression stage of the multi-stage compressor, the pre-compressed pressure medium to output a compressed pressure medium; and

operating the pressure control system in a closed mode, which includes:
providing a further compressed pressure medium, which is obtained from additional compression, by the first compression stage, of the compressed pressure medium from at least one of the pressure medium reservoir or the pressure medium chambers of the pressure control system, wherein the further compressed pressure medium is output without additional compression by the second compression stage of the multistage compressor by diverting the further compressed pressure medium around the second compression stage,

wherein the first compression stage and the second compression stage of the multistage compressor are driven by a single motor.