Patent ID: 11946225
Assignee: CATERPILLAR INC.
Field: Civil engineering (Other fields)
Classification: CPC E  F | IPC E  F

Claim 4:
5. The hydraulic system of claim 1, further comprising:
a pressure sensor of the second hydraulic circuit configured to sense or determine a discharge pressure of the second pump and to generate a signal indicative of the sensed or determined discharge pressure of the second pump; and
an electric motor speed sensor configured to sense or determine a speed of the electric motor and to generate a signal indicative of the sensed or determined speed of the electric motor,
wherein the controller is communicatively coupled to the pressure sensor and to the electric motor speed sensor and further configured to:
look up, on an efficiency map for the second pump, the sensed discharge pressure of the second pump along a range of speeds including the sensed or determined speed of the electric motor to identify a corresponding range of pump displacements; and
select, as the target displacement for the second pump, a pump displacement in the range of pump displacements that corresponds to the greatest efficiency.