Patent ID: 11920645
Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. A method of controlling a hydraulic system, the hydraulic system including an electrically driven pump, a plurality of regulator valves feeding corresponding consumers, and a lubrication/cooling valve, the method comprising:
in response to a total flow demand rising above an upper flow threshold, operating in an enhanced mode in which
the pump is driven with a first current level,
the lubrication/cooling valve is closed, and
the regulator valves are held steady until a system pressure exceeds a first pressure threshold, after which the regulator valves are operated based on pressure demands of the respective consumers; and

in response to the total flow demand falling below a lower threshold, operating in a normal mode in which
the regulator valves are operated based on the pressure demands of the respective consumers,
the pump is driven with the first current and the lubrication/cooling valve is closed in response to the system pressure falling below a lower pressure threshold, and
the pump is driven with a second current lower than the first current and the lubrication/cooling valve is opened in response to the system pressure rising above an upper pressure threshold.