Multi-pump system with pump-flow diversion

A work vehicle comprising

• a hydraulic system comprising
• a fluid reservoir,
• a pump group comprising a fixed-displacement first pump and a fixed-displacement second pump such that the first and second pumps are flow-parallel to one another,
• an actuator,
• an open-center directional control valve positioned fluidly between the pump group and the actuator,
• an electro-hydraulic diverter coupled fluidly to a point between the second pump and the directional control valve and to the fluid reservoir to divert flow from the second pump to the fluid reservoir when the diverter is opened, and
• a pressure sensor positioned to sense a supply pressure in the hydraulic system,
• an operator input device configured for manual selection of a pressure threshold setting, and
• a controller configured to
• receive a supply pressure signal indicative of the supply pressure and a pressure threshold signal indicative of the selected pressure threshold setting,
• determine if the supply pressure is at least the selected pressure threshold setting, and
• if so, command the diverter to open.

A work vehicle comprising

• a fluid reservoir,
• a pump group comprising a fixed-displacement first pump and a fixed-displacement second pump such that the first and second pumps are flow-parallel to one another,
• an actuator,
• an open-center directional control valve positioned fluidly between the pump group and the actuator,
• an electro-hydraulic diverter coupled fluidly to a point between the second pump and the directional control valve and to the fluid reservoir to divert flow from the second pump to the fluid reservoir when the diverter is opened,
• a start-up sensor positioned to sense start-up of the work vehicle,
• an engine,
• an engine speed sensor positioned to sense information indicative of a rotational speed of the engine, and
• a controller configured to
• receive a start-up signal indicative of start-up of the work vehicle and an engine speed signal indicative of the engine speed,
• determine if start-up of the work vehicle has occurred and the engine speed is below an engine speed threshold, and
• command the diverter to open if start-up of the work vehicle has occurred and the engine speed is below the engine speed threshold.

A work vehicle comprising

• a first implement section,
• a second implement section,
• a section sensor configured to sense which of the first implement section and the second implement section is in focus,
• a hydraulic system comprising
• a fluid reservoir,
• a pump group comprising a fixed-displacement first pump and a fixed-displacement second pump such that the first and second pumps are flow-parallel to one another,
• open-center directional control valving,
• an electro-hydraulic diverter coupled fluidly to a point between the second pump and the directional control valving and to the fluid reservoir to divert flow from the second pump to the fluid reservoir when the diverter is opened, and
• a pressure sensor positioned to sense a supply pressure in the hydraulic system, and
• a controller configured to
• receive a supply pressure signal indicative of the supply pressure and a section signal indicative of which of the first implement section and the second implement section is in focus,
• determine which of the first implement section and the second implement section is in focus,
• select a first pressure threshold setting as a selected pressure threshold setting if the first implement section is in focus or a second pressure threshold setting as the selected pressure threshold setting if the second implement section is in focus,
• determine if the supply pressure is at least the selected pressure threshold setting, and
• if so, command the diverter to open.