Transportation vehicle

Abstract

Provided is a transportation vehicle including: a heat exchanger that cools a fluid to be cooled; a pump that circulates the fluid to be cooled; a temperature sensor hat detects a temperature of the fluid to be cooled; a fan that blows air to the heat exchanger; and a hydraulic motor that drives the fan, in which a rotation speed of the pump rises from a first pump rotation speed to a second pump rotation speed according to a rise in the detected temperature when the temperature detected by the temperature sensor is between a first temperature and a second temperature, a rotation speed of the hydraulic motor rises from a first motor rotation speed to a second motor rotation speed according to a rise in the detected temperature when the detected temperature is between a third temperature and a fourth temperature, the third temperature is set higher than the first temperature, and when the detected temperature rises, the rotation speed of the pump starts to rise before the rotation speed of the hydraulic motor starts to rise, so that it is possible to improve fuel consumption and suppress noise by suppressing the driving frequency and the rotation speed of the fan.