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

Claim 2:
3. The hydraulic system of claim 1, further comprising:
a first pressure sensor configured to sense or determine a first pressure of fluid on a first side of the first pump in the first hydraulic circuit;
a second pressure sensor configured to sense or determine a second pressure of the fluid on a second side of the first pump in the first hydraulic circuit;
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 first and second pressure sensors and to the electric motor speed sensor and further configured to:
determine a pressure drop across the first pump based on a difference between the first and second pressures;
look up, on an efficiency map for the first pump, the pressure drop 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 first pump, a pump displacement in the range of pump displacements that corresponds to the greatest efficiency.