Patent ID: 8321114

Claim:
A work vehicle comprising: an engine; a hydraulic pump driven by the engine; a hydraulic actuator driven by hydraulic fluid discharged from the hydraulic pump; a pump control device configured to control an absorption torque of the hydraulic pump in accordance with a command value of an input command signal; a storage unit configured to store command data showing correspondence between the command value of the command signal to the pump control device and the absorption torque of the hydraulic pump; and a control unit configured to calculate a target absorption torque of the hydraulic pump such that an output torque of the engine and the absorption torque of the hydraulic pump are matched at a target matching rotation speed of the engine, the control unit being configured to refer to the command data when calculating the command value corresponding to the target absorption torque, and the control unit being configured to output the command signal of the calculated command value to the pump control device, wherein the control unit is configured to calculate the absorption torque of the hydraulic pump in an equilibrium state in which an output horsepower of the engine and an absorption horsepower of the hydraulic pump are matched, to acquire calibration information including the calculated absorption torque of the hydraulic pump and the command value of the command signal being output to the pump control unit in the equilibrium state, and to calibrate the command data on the basis of the calibration information.