Flow management of a hydraulic system

A method of providing supplemental flow for a hydraulic system of a work vehicle comprising:

• operating a first pump to provide a first flow in a first circuit to a first plurality of selective control valves;
• adjusting a first swashplate of the first pump via a first load sense circuit connected to the first pump;
• measuring a first pressure of the first circuit via a first pressure sensor;
• measuring a first angle of the first swashplate of the first pump via a first swashplate angle sensor;
• operating the supplemental pump to provide a lower flow in a standby condition and a higher flow in a use condition to a supplemental circuit;
• adjusting a supplemental swashplate of the supplemental pump via a supplemental load sense circuit connected to a supplemental load sensing compensator of the supplemental pump;
• measuring a supplemental pressure in the supplemental circuit via a supplemental pressure sensor;
• adjusting a load sensing flow provided to the supplemental load sensing compensator via a supplemental valve;
• selectively enabling flow from the supplemental circuit to the first circuit via a first valve when the supplemental pressure is equal to or greater than the first pressure;
• and
• determining via a controller to operate the supplemental pump in one of the standby condition and the use condition based in part on the first angle of the first swashplate, wherein determining via a controller includes operating the supplemental pump in the standby condition when the first angle of the first swashplate is below a displacement threshold.

A hydraulic system for a work vehicle comprising:

• a first pump having a first swashplate, the first pump providing a first flow in a first circuit to a first plurality of selective control valves;
• a first load sense circuit connected to a first load sensing compensator of the first pump;
• a first pressure sensor measuring a first pressure in the first circuit;
• a first swashplate angle sensor measuring a first angle of the first swashplate;
• a supplemental pump having a supplemental swashplate, the supplemental pump providing a supplemental flow to a supplemental circuit, the supplemental pump operating at a lower flow in a standby condition and a higher flow in a use condition;
• a supplemental load sense circuit connected to a supplemental load sensing compensator of the supplemental pump;
• a supplemental pressure sensor measuring a supplemental pressure in the supplemental circuit;
• a supplemental valve adjusting a load sensing pressure provided to the supplemental load sensing compensator;
• a first valve selectively enabling flow from the supplemental circuit to the first circuit when the supplemental pressure is equal to or greater than the first pressure;
• and
• a controller determining to operate the supplemental pump in one of the standby condition, when the first angle of the first swashplate is below a displacement threshold, and the use condition, when the first angle of the first swashplate is at or above a displacement threshold, wherein the controller operates the supplemental valve in a first position to provide a minimal load sense pressure to the supplemental load sensing compensator in the standby condition, which causes the supplemental pump to provide the lower flow.

A method of providing supplemental flow for a hydraulic system of a work vehicle comprising:

• operating a first pump to provide a first flow in a first circuit to a first plurality of selective control valves;
• adjusting a first swashplate of the first pump via a first load sense circuit connected to the first pump;
• measuring a first pressure of the first circuit via a first pressure sensor;
• measuring a first angle of the first swashplate of the first pump via a first swashplate angle sensor;
• operating the supplemental pump to provide a lower flow in a standby condition and a higher flow in a use condition to a supplemental circuit;
• adjusting a supplemental swashplate of the supplemental pump via a supplemental load sense circuit connected to a supplemental load sensing compensator of the supplemental pump;
• measuring a supplemental pressure in the supplemental circuit via a supplemental pressure sensor;
• adjusting a load sensing flow provided to the supplemental load sensing compensator via a supplemental valve;
• selectively enabling flow from the supplemental circuit to the first circuit via a first valve when the supplemental pressure is equal to or greater than the first pressure;
• determining via a controller to operate the supplemental pump in one of the standby condition, when the first angle of the first swashplate is below a displacement threshold, and the use condition, when first angle of the first swashplate is at or above a displacement threshold;
• and
• operating the supplemental valve in a first position via the controller to provide a minimal load sense pressure to the supplemental load sensing compensator in the standby condition, which causes the supplemental pump to provide the lower flow.