KR960024076A - Radiator fan and cooling fan control method and device - Google Patents

Abstract

The present invention relates to a radiator fan and an air conditioner fan (hereinafter referred to as a "cooling fan") of a vehicle. More specifically, the radiator fan and the air conditioner fan may be smoothly used by using an engine control unit (ECU). It relates to a device that can be operated.

The present invention compares and controls the radiator fan motor and the cooling fan motor to the engine control unit (ECU) to control the signals of the cooling water temperature sensor, the air conditioner switch, and the air conditioner compressor switch, thereby eliminating the need for a separate peripheral device, thereby reducing the vehicle cost. In addition, the radiator and air conditioner can be driven more efficiently.

Description

Radiator fan and cooling fan control method and device

Since this is an open matter, no full text was included.

2 is a circuit diagram showing a radiator fan and a cooling fan control system according to the present invention, FIG. 3 is a diagram showing an operating state of the present invention, and FIG. 4 is a flowchart showing an embodiment according to the present invention.

Claims (2)

An engine control unit (ECU) for outputting a signal for operating a cooling fan motor or a radiator fan motor by comparing the signals input from the cooling water temperature sensor, the air conditioner switch and the air conditioner compressor switch, and the engine control unit (ECU) transmitted from the engine control unit (ECU). ON and OFF when the signal is a signal for driving the cooling fan motor, and ON when the signal transmitted from the engine control unit (ECU) is a signal for driving the radiator fan motor. And a radiator relay unit which is turned off, a cooling fan motor which is connected to the cooling fan relay unit and is driven at a low and high speed when a driving signal is applied, and a driving signal is connected to the radiator relay unit. A radiator fan and cooling fan control device, comprising: a radiator fan motor that rotates when applied to a low and high speed. A first step of determining whether the air conditioner is installed in the vehicle; and if the coolant temperature corresponds to the first area if the air conditioner is not installed in the step (1), the radiator fan is determined to correspond to the first area. A second step of driving the motor at a low speed; and in step (2), if the coolant temperature is not the first region, it is determined whether the coolant temperature is the fourth region. A third step of rotating the fan motor at high speed and repeating step (2) if the coolant temperature is not the fourth region; and if the air conditioner is mounted in step (1), the air conditioner switch is turned on. In the fourth step of determining whether or not the state, and if the air conditioner switch is OFF in the step (4), it is determined to determine whether the coolant temperature corresponds to the third region. A fifth step of driving the radiator fan motor and the cooling fan motor at a low speed when the angular water temperature corresponds to the third region; If the coolant temperature corresponds to the fourth region, the radiator fan motor operates at high speed, the cooling fan motor operates at low speed, and the coolant temperature does not correspond to the fourth region. If not, the sixth step of repeating the step (5), the seventh step of determining whether the coolant temperature corresponds to the first region if the air conditioner switch is in the ON state (4), and the step (7) If the coolant temperature corresponds to the first zone, it is determined whether the air conditioner compressor switch is ON. If the air conditioner compressor switch is ON, the radiator fan motor is operated at a low speed and at the same time, the cooling fan is An eighth step of operating the motor at high speed and operating the radiator fan motor and the cooling fan motor at a low speed unless the air conditioner compressor switch is in the on state (0N), and the coolant temperature in the step (7). If it is not the first region, it is determined whether the coolant temperature is the second region. If the coolant temperature does not correspond to the second region, the ninth step of repeating step (7), and in the step (9) If the air conditioner compressor switch is in the ON state, and if the air conditioner compressor switch is in the ON state, the radiator fan motor and the cooling fan motor operate at high speed, and the air conditioner compressor switch is turned on. If it is not in the ON state, the radiator fan motor operates at a high speed (high) and at the same time a cooling fan motor at a low speed (low) (low) Radiator fan and the cooling fan control method. ※ Note: The disclosure is based on the initial application.