| 摘要 |
A cooling fan control device of a construction heavy equipment is provided to make the rotation speed of the cooling fan reduce or stop if a cooling pan device is opened and to send a warning signal to an operator. A cooling fan control device of a construction heavy equipment comprises: a switch(21) detecting the opening and shutting of a cooling fan cover; a cooling fan controller(22) electrically connected to an engine control unit(16) and a proportional control valve(11) in order to proportionally control the rotation speed of the cooling fan to the coolant temperature of an engine; a signal generator(23) generating a warning signal through the control of the cooling fan controller; and a potentiometer(24) generating the other electric signal according to the size of the opening angle of a cooling pan device. |
