WORKING VEHICLE AND METHOD FOR CONTROLLING WORKING VEHICLE

An objective of the present invention is to provide a work vehicle and a work vehicle control method that can inhibit a reduction in the ease of operation and improve the effect of reduced fuel consumption. The work vehicle comprises a controller (10). The controller (10) determines whether low-load conditions indicating that the vehicle is in a low-load state are satisfied. The controller (10) controls the engine (21) when the low-load conditions are satisfied so that the upper limit value of the output torque of the engine (21) is made less than when the low-load conditions are not satisfied. Also, the controller (10) varies the reduction amount of the upper limit value of the output torque of the engine (21) when the low-load conditions are satisfied, in accordance with variation in at least one among the detected vehicle speed, the vehicle acceleration, and the engine-rotation-speed acceleration, and in accordance with variation in the detected engine rotation speed.