| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of a cooling fan capable of improving cooling performance according to reduced load in reduction of the load such as traveling wind and the like, and a control method of the control device.SOLUTION: A control device of a cooling fan controls a motor for driving the cooling fan of a radiator of a vehicle, and controls a rotational frequency of the motor on the basis of a command signal from a higher-order control device loaded on the vehicle. The control device does not control the rotational frequency in an ordinary rotation mode in which a Duty ratio of voltage applied to the motor is reduced when a command rotational frequency from the higher-order control device becomes a prescribed value or more, but executes the control in a cancel mode to keep the Dury ratio of the voltage applied to the motor.SELECTED DRAWING: Figure 1 |
