Work vehicle

A work vehicle comprising:

• a hydraulic device;
• a hydraulic oil pump;
• a hydraulic oil tank;
• a meter-in circuit that guides hydraulic oil from the hydraulic oil pump to the hydraulic device;
• a meter-out circuit that guides hydraulic oil from the hydraulic device to the hydraulic oil tank;
• a bleed-off circuit that guides hydraulic oil from the hydraulic oil pump to the hydraulic oil tank without passing through the hydraulic device;
• a hydraulic oil control valve that adjusts opening areas of the meter-in circuit, the meter-out circuit, and the bleed-off circuit by sliding of a spool;
• an operation tool operated by an operator;
• and
• a controller that determines a target flow rate of hydraulic oil to be fed to the hydraulic device on a basis of an operation amount of the operation tool, wherein
• the controller calculates a bleed-off target flow rate on a basis of a flow rate of the hydraulic oil fed from the hydraulic oil pump and a target flow rate of the hydraulic oil fed to the hydraulic device, calculates a bleed-off throttle differential pressure on a basis of a pressure of the hydraulic oil fed from the hydraulic oil pump and a pressure of the hydraulic oil in the hydraulic oil tank, calculates a bleed-off target opening area on a basis of the bleed-off target flow rate and the bleed-off throttle differential pressure, and controls the hydraulic oil control valve such that the bleed-off target opening area is achieved.