| 摘要 |
PROBLEM TO BE SOLVED: To provide an amphibian vehicle capable of increasing a running drive force even if an engine speed is low.SOLUTION: If an engine speed is lower than a predetermined speed, then a fan flow volume of a fan is calculated on the basis of a fan outlet pressure (B1); a heat exchange volume of a heat exchanger is calculated on the basis of a fan inlet temperature, a fan outlet temperature and the fan flow volume (B2); a target fan speed of the fan is calculated on the basis of the engine speed and the heat exchange volume (B3); the speed of the fan is decreased so that the fan speed is equal to the target fan speed (B4, B5); and power to be transmitted to a running device is increased to increase a driving torque (B6). |
