KR20020049540A - overheat prevent device for engine of vehicles - Google Patents

Abstract

PURPOSE: A device for preventing overheat of engine is provided to prevent trouble due to overheat of the engine by discharging heat of a heater by rotating a fan normally or reversely. CONSTITUTION: A device comprises a radiator(10), filled with coolant and having a temperature sensor(11) to detect temperature of the coolant; an electronic control unit(20), outputting control signal according to temperature detected by the temperature sensor of the radiator; a heater(30), operated or stopped by output signal of the electronic control unit to transfer heat into a car room during winter; an air conditioner(40), operated or stopped by the electronic control unit to supply cold air into the car room; a driving fan(50), cooling down heated coolant in the radiator by output signal of the electronic control unit; and an actuator(60), opening and closing a circulation hole to circulate heat of the heater by the driving fan.

Description

Overheat prevent device for engine of vehicles}

The present invention relates to an engine overheating prevention device, and more particularly, by detecting the heat of the cooling water to rotate the fan forward or reverse to discharge the hot heat of the heater to prevent the failure due to overheating of the engine during the summer. The present invention relates to an engine overheating prevention device that can be prevented.

A device that cools the engine to prevent overheating and keeps it at a temperature is called a cooling device. Although the temperature of combustion gas in a cylinder reaches 2000 degreeC or more, a considerable amount of this heat is absorbed in a cylinder, a cylinder head, a piston, etc. If the temperature of these parts rises excessively, the cylinder may be deformed or the oil film on the cylinder wall may be broken, resulting in poor lubrication and, in severe cases, damage the engine. In addition, the combustion condition worsens, resulting in knocking or premature ignition, resulting in a sharp drop in output.

On the contrary, if it is cooled too much, the amount of heat lost due to combustion is increased, thereby increasing fuel consumption, which lowers the thermal efficiency of the engine. In addition, since a sufficient amount of gasoline atomization is supplied from the cylinder, gasoline may cause engine oil to be diluted by gasoline, and cause abrasion of the cylinder.

The engine is cooled by air cooling, which cools the outside of the engine directly by using outside air, and water cooling, which cools by circulating the coolant inside the engine.

The air-cooled type uses a cooling fan to connect the outside air to the outside or forcibly sends the outside air to the fan to release heat from the engine.

This air-cooling type increases the cooling efficiency by installing a fan on the cylinder head and the cylinder block outer wall to increase the heat dissipation area. In addition, forced ventilation by the fan is introduced by the ventilation guide plate to cool the cylinder parts evenly. Here, the cooling fan is driven by the belt from the crankshaft and directly connected to the motor, the direct drive fan is the rotational speed of the fan is linked to the rotational speed of the engine. The air flow rate of cooling does not necessarily correspond to the required amount, and the air flow rate of the radiator decreases because the air flow rate is low at low rotational speeds, and conversely, if the air flow rate is too high at high rotational speeds, the engine is overcooled. And because it's a direct drive, as long as the engine is spinning, the fan is also spinning and engine quietness is reduced. In addition, the fan rotates in one direction to operate the heater and the air conditioner. When the summer cooling water is heated, the heat of the cooling water is dropped by the heater operation.

Therefore, the air-cooled engine overheating prevention device does not have an automatic recognition of engine overheating, so it is not possible to know the proper time to curl the heater.

The present invention is intended to solve the above-mentioned problems in general, its purpose is to detect the heat of the coolant by rotating the fan forward or reverse rotation to discharge the hot heat of the heater by the overheating of the engine during the summer It is to be able to prevent the failure caused by.

1 is a block diagram of an engine overheating prevention device according to an embodiment of the present invention.

Code descriptions for the main parts of the drawings

10; radiator 11; temperature sensor

20; electronic control device 30; heater

40; air conditioner 50; drive fan

60; actuator

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings in order to describe in detail enough to enable those skilled in the art to easily carry out the present invention. . Other objects, features, and operational advantages, including the object, operation, and effect of the present invention will become more apparent from the description of the preferred embodiment.

For reference, the embodiments disclosed herein are only presented by selecting the most preferred examples to help those skilled in the art from the various possible examples, the technical spirit of the present invention is not necessarily limited or limited only to this embodiment. However, various changes and modifications can be made within the scope without departing from the technical spirit of the present invention.

As shown in FIG. 1, the coolant is filled to a predetermined level inside the radiator 10, and a temperature sensor 11 mounted with a temperature sensor 11 to detect the temperature of the coolant, and a temperature sensor of the radiator 10. The electronic control unit 20 enables outputting a control signal according to the degree of temperature sensed by the sensor 11 and an operation or inoperation by the output signal of the electronic control unit 20 to transfer heat to the vehicle interior in winter. Heater 30 and the electronic control unit 20 to be operated or non-operation can be made, by the air conditioner 40 to allow the cold air into the vehicle interior, and by the electronic control unit 20 The driving fan 50 to cool the cooling water of the heated radiator is connected to the actuator 60 operating to circulate the heat of the heater by driving the driving fan 50 so as to enclose the circulation port. It is made up.

The engine overheat prevention apparatus of the present invention by the above configuration is to start the driver and at the same time the electronic control device 20 is initialized.

The electronic controller 20 inputs the cooling water temperature detection signal of the lydata 10 from the temperature sensor 11 after a predetermined time. At this time, when the temperature value detected by the temperature sensor 11 is 100 ℃ or more, the electronic control device 20 operates the drive fan 50 to prevent the engine from overheating so that the warmth can be discharged to the outside ( Open 60) to allow warmth to be discharged to the outside. At this time, the air conditioner is turned off.

On the other hand, when the cooling water of the writer 10 is 85 ° C. or less by the driving fan 50, the electronic controller rotates forward while the rotation speed of the increased driving fan 50 becomes the normal rotation speed so that the wind of the driving fan flows into the air conditioner pipe. The actuator 60 is operated to be.

The present invention that acts in this way has the effect of preventing the failure due to overheating of the engine during the summer by sensing the heat of the coolant to rotate the fan forward or reverse to discharge the hot heat of the heater outside .

Claims (1)

The cooling water is filled to a predetermined level inside the radiator 10 equipped with a temperature sensor 11 for sensing the temperature of the cooling water, and the temperature detected by the temperature sensor 11 of the radiator 10. An electronic control unit 20 for outputting a control signal according to a degree, a heater 30 for transmitting heat to a vehicle interior during winter by operating or inoperating by an output signal of the electronic control unit 20, and In addition, the electronic control unit 20 may be operated or inactivated, and the air conditioner 40 may be configured to put cold air into a vehicle interior, and cool the coolant of the radiator heated by the electronic control unit 20. Engine overheating prevention device is configured to be connected to the drive fan (50) and the actuator (60) to operate the heat of the heater by the drive of the drive fan 50 to circulate the circulation port.