KR19990026475U - Notification device for changing the engine oil of the car - Google Patents

Abstract

The present invention relates to a car, in particular, when the engine oil temperature of the car rises above the appropriate temperature, it detects this and counts the number of times the proper temperature is exceeded and informs the driver of the engine oil change time, the driver changes the engine oil The present invention relates to a device for notifying engine oil change of a vehicle to prevent deterioration of engine performance.

In a conventional car, the driver changes the engine oil by the color or the mileage of the engine oil, so that the driver has to check the color of the engine oil every day, and the performance of the engine oil is improved due to the increase in the engine oil temperature. If it is suddenly lowered, there is a problem that the performance of the engine is lowered because the engine oil replacement time has passed.

According to the present invention, when an engine oil temperature sensor is installed in an engine oil circuit of an automobile, the engine oil temperature counts the number of times that the engine temperature exceeds the appropriate temperature, and then informs the driver when the number of times the proper temperature exceeds the proper number of times. By allowing the engine to replace the engine oil, it is possible to prevent the engine performance of the vehicle from being lowered.

Description

Notification device for changing the engine oil of the car

The present invention relates to a car, in particular, when the engine oil temperature of the car rises above the appropriate temperature, it detects this and counts the number of times the proper temperature is exceeded and informs the driver of the engine oil change time, the driver changes the engine oil The present invention relates to a device for notifying engine oil change of a vehicle to prevent deterioration of engine performance.

In general, in automobiles, many parts rub against each other while the engine is running and wear, which shortens the service life and causes engine performance to deteriorate. To prevent this, an oil film is formed between the perturbation surfaces by using engine oil to prevent friction. Improves machine efficiency by minimizing losses and wear of parts. This engine oil is momentarily subjected to a large pressure on the lubrication part, so that the oil film is broken and sintering does not occur. The engine oil contains airtight action to prevent gas leakage in the stroke and explosion stroke, cooling action to absorb heat generated from the perturbation part and radiate it to other places, dust in the air, worn metal powder or combustion products. Absorbing during the flow process to clean the lubrication portion, and to form an oil film on the perturbation surface to prevent the penetration of moisture and corrosive gas, and to perform the rust prevention action to replace the penetration.

On the other hand, the engine oil should be able to lubricate by maintaining a constant viscosity even when the temperature and pressure changes, the viscosity indicates the stickiness of the engine oil, the engine oil of high viscosity has a thick oil film and a large load on the metal surface However, if the viscosity is too high, the internal friction of the lubrication part increases, and the resistance increases, so that the loss of power increases. On the contrary, if the viscosity is low, the loss of power is small, but the oil film is broken, and the friction action is not sufficient. Will not. In addition, the viscosity of the engine oil decreases as the temperature rises.

The degree of viscosity change with respect to temperature is referred to as a viscosity index. When the viscosity index is described with reference to FIG. 1, the engine oil represented by a solid line of A has a lower viscosity at low temperature than the engine oil represented by a dotted line of B. On the contrary, the viscosity becomes higher than the engine oil of B at high temperature. The engine oil of A at this time is said to have a larger viscosity index than the engine oil of B. In other words, the engine oil with a small viscosity change by temperature is said to have a large viscosity index, and the engine oil used in a severe use condition such as an engine oil used in automobiles has a high viscosity index.

In addition, the engine oil of a vehicle prevents the formation and accumulation of products generated by oxidation of carbon or engine oil generated by combustion of the engine oil by high temperature heat and pressure during operation, and high temperature heat and a large amount of air Because it is in contact with oil, it prevents oxidation by combining with oxygen in the air, and consumes engine oil by evaporation by frictional heat, and it must have the property to withstand high heat well, and it does not reduce fluidity even at low temperature. It should be possible to easily start the engine.

Conventional automotive engine oil needs to be checked daily for engine oil before starting or after 15 minutes after turning off, where the ground must be level and read the scale to indicate that the engine is in the middle of MAX and MIN (Low, High). The amount of oil is normal. Also, when checking the engine oil, if the engine oil color is close to black, it is heavily contaminated. If it is close to red, gasoline is introduced, and if it is close to milk, it indicates that the coolant is mixed. Must be maintained.

When the engine oil temperature of the vehicle as described above is 125-130 ° C or more, the performance of the engine oil is sharply lowered, the formation of the oil film worsens and the sintering of the rotating portion occurs.

As described above, in the conventional vehicle, the driver changes the engine oil by the color or the mileage of the engine oil, so that the driver has to check the color of the engine oil every day. If the performance of the engine oil is sharply reduced, there is a problem that the engine oil replacement time passes and the performance of the engine is degraded.

The present invention is to solve the problems described above, the purpose is to install the engine oil temperature sensor in the engine oil circulation path of the vehicle to measure the engine oil temperature of the vehicle and when the temperature exceeds the appropriate temperature count the number of times exceeding the proper temperature After that, if the appropriate temperature exceeded the number of times exceeds the appropriate number to inform the driver so that the driver can replace the engine oil, it is possible to prevent the engine performance of the vehicle to be reduced.

Features of the present invention for achieving the above object, in the vehicle, the engine oil temperature sensor 21 is installed in the engine oil circulation path for measuring the temperature of the engine oil and converting it into a corresponding voltage; A comparator 22 for comparing a voltage applied from the engine oil temperature sensor 21 with a reference voltage corresponding to the engine oil proper temperature; A counter 24 for counting the number of times the proper temperature is exceeded in accordance with the control signal; An oil change warning light 27 for notifying the driver of the engine oil change time by blinking operation; A relay switch 26 which controls the power applied to the oil change warning lamp 27 at regular intervals according to a control signal; The comparator 22 supplies a signal voltage to the engine oil temperature sensor 21 and compares the voltage from the engine oil temperature sensor 21 with a reference voltage corresponding to the engine oil proper temperature stored in its memory. ), And when a signal is applied from the comparator 22, the counter 24 is controlled to increase the number of times the proper temperature is increased by '1' and to store it in its own memory, and to store the appropriate temperature and the appropriate number of times. In comparison with this, if the appropriate temperature exceeds the number of times, the control unit outputs a control signal to the relay switch 26 to include the ECU 23 for controlling to supply power to the oil change warning lamp 27 from the power supply unit 25 .

The ECU 23 includes a first step of controlling to compare the engine oil temperature with an appropriate temperature stored in its memory after the engine oil temperature is measured; If the engine oil temperature is higher than the appropriate temperature in the first step, increase the number of times the proper temperature is increased to '1' and store it in its own memory, and then compare the corresponding number of times with the appropriate temperature stored in its own memory. A second process of doing; In the second process, if the appropriate temperature exceeded the number of times greater than the appropriate number, the oil change warning lamp 27 is flashing to operate the program to operate in a third process to inform the driver that the engine oil replacement time, characterized in that do.

1 is a view comparing the viscosity index of the conventional automotive engine oil.

Figure 2 is a block diagram of the engine oil change time notification device of the vehicle according to the present invention.

3 is a flow chart showing the operation time notification of the engine oil of the vehicle according to the present invention.

Explanation of symbols on the main parts of the drawings

21: engine oil temperature sensor 22: comparator

24: ECU (Electronic Control Unit) 24: Counter

25 power supply 26 relay switch

27: oil change warning light

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention in detail as follows.

Engine oil change time notification device of the vehicle according to the present invention is shown in Figure 2, the engine oil temperature sensor 21, comparator 22, ECU 23 (Electronic Control Unit), counter 24, power supply (25), a relay switch (26), and an oil change warning lamp (27).

The engine oil temperature sensor 21 is installed in the engine oil circulation path. The engine oil temperature sensor 21 measures the temperature of the engine oil using a property of decreasing resistance as the engine oil rises, converts the temperature into a corresponding voltage, and applies it to the comparator 22. The comparator 22 compares the voltage applied from the engine oil temperature sensor 21 with a reference voltage corresponding to the engine oil proper temperature from the ECU 23 so that the voltage applied from the engine oil temperature sensor 21 is greater than the reference voltage. If high, a signal is applied to the ECU 23. The ECU 23 supplies a signal voltage to the engine oil temperature sensor 21, and then controls the comparator 22 to be measured by the engine oil temperature sensor 21 and applied to the comparator 22. Compare the reference voltage corresponding to the engine oil proper temperature stored in the memory of the memory, and when a signal is applied from the comparator 22, the counter 24 is controlled to increase the number of times the proper temperature exceeds '1' To the memory of the. In addition, by comparing the appropriate temperature exceeded times and the appropriate times corresponding to the engine oil replacement time stored in its own memory, if the appropriate temperature exceeded times is large, a control signal is output to the relay switch 26 to supply oil from the power supply unit 25. Control so that power is supplied to the replacement warning light (27). The counter 24 counts the appropriate number of times of temperature exceeding the control signal from the ECU 23 and applies it to the ECU 23. The power supply unit 25 supplies power for the flashing operation of the oil change warning light 27 to the relay switch 26, and the relay switch 26 supplies power applied to the oil change warning light 27 from the power supply unit 25 to the ECU. In accordance with the control signal from 23, the control is interrupted at regular intervals, and the oil change warning lamp 27 flashes by the power interruption of the relay switch 26 to inform the driver that it is time to replace the oil.

Engine oil change time notification operation of the vehicle according to the present invention configured as described above is performed in the order shown in FIG.

First, when the ECU 23 supplies a signal voltage to the engine oil temperature sensor 21, the engine oil temperature sensor 21 measures the temperature of the engine oil, converts it into a corresponding voltage, and applies it to the comparator 22. (Step S31). After step S31, the ECU 23 controls the comparator 22 to compare the voltage corresponding to the corresponding engine oil temperature with the reference voltage corresponding to the appropriate temperature of the engine oil stored in its memory (step S32), If the engine oil temperature is not higher than the proper temperature, the operation ends. If the engine oil temperature is higher than the proper temperature, the counter 24 is controlled to increase the number of times the proper temperature is exceeded by one (step S33). The appropriate number of times of exceeding the appropriate temperature is stored (step S34). After step S34, the ECU 23 compares the appropriate temperature exceeded number with the proper number corresponding to the engine oil replacement time stored in its own memory (step S35). If the appropriate temperature exceeded number is not greater than the proper number, When the proper temperature exceeded number is greater than the proper number of times, the relay switch 26 is controlled to supply power to the oil change warning lamp 27 from the power supply unit 25 so that the corresponding oil change warning lamp 27 blinks. (Step S36).

As described above, when the engine oil temperature sensor is installed in the engine oil circulation path of the vehicle, the present invention counts the number of times that the engine oil temperature exceeds the appropriate temperature, and when the number of exceeding the proper temperature exceeds the appropriate number, This informs the driver so that the engine oil can be changed, thereby preventing the engine performance of the vehicle from being deteriorated.

Claims (2)

In the car, An engine oil temperature sensor 21 installed in the engine oil circuit to measure the temperature of the engine oil and convert the engine oil into a corresponding voltage; A comparator 22 for comparing a voltage applied from the engine oil temperature sensor 21 with a reference voltage corresponding to the engine oil proper temperature; A counter 24 for counting the number of times the proper temperature is exceeded in accordance with the control signal; An oil change warning light 27 for notifying the driver of the engine oil change time by blinking operation; A relay switch 26 which controls the power applied to the oil change warning lamp 27 at regular intervals according to a control signal; The comparator 22 supplies a signal voltage to the engine oil temperature sensor 21 and compares the voltage from the engine oil temperature sensor 21 with a reference voltage corresponding to the engine oil proper temperature stored in its memory. ), And when a signal is applied from the comparator 22, the counter 24 is controlled to increase the number of times the proper temperature is increased by '1' and to store it in its own memory, and to store the appropriate temperature and the appropriate number of times. Comparing to the appropriate temperature exceeds the number of times, and outputs a control signal to the relay switch 26 includes the ECU 23 for controlling to supply power to the oil change warning lamp 27 from the power supply unit 25 The engine oil change time notification device for a vehicle. The method of claim 1, wherein the ECU (23) comprises: a first step of controlling to compare the engine oil temperature with an appropriate temperature stored in its memory after the engine oil temperature is measured; If the engine oil temperature is higher than the appropriate temperature in the first step, increase the number of times the proper temperature is increased to '1' and store it in its own memory, and then compare the corresponding number of times with the appropriate temperature stored in its own memory. A second process of doing; In the second process, if the appropriate temperature exceeded the number of times greater than the appropriate number, the oil change warning lamp 27 is flashing to operate the program to operate in a third process to inform the driver that the engine oil replacement time, characterized in that The engine oil change timing notification device of the car.