JPH03255354A - Oil-quality measuring apparatus and vehicle - Google Patents

Abstract

PURPOSE:To prevent the use of inadequate oil beforehand by a simple method and to prevent the occurrence of the trouble of a vehicle by adding acid material into new oil to be measured, measuring the amount of voltage change of the new oil, and judging the adequacy and inadequacy of the new oil. CONSTITUTION:A specified amount of new oil 8 is injected through an oil injecting port 2. When a tank 5 is filled, a voltage V1 of the new oil 8 is mea sured with a pair of electrodes 25. Then, a solenoid valve 29 is opened, and HCl 26 is dropped into the new oil 28. When the total amount of drops reaches a specified amount, the solenoid valve 29 is closed, and the dropping is stopped. Then, a voltage V2 is measured with the electrodes 25, and the difference V3 between the voltages V1 and V2 is operated. The difference V3 is compared with a difference Vc in the case of standard oil. When the result is small, the new oil is judged to be adequate oil and the fact is displayed on a display device 21. Then, a solenoid valve 11 is opened, and the new oil 8 is drained. In this way, the use of the inadequate oil can be prevented by the simple method, and the occurrence of the trouble of a vehicle can be prevented before hand.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an oil quality measuring device and a vehicle.

(Prior Art) Some vehicles are equipped with an oil deterioration measuring device for measuring oil deterioration, as disclosed in Japanese Patent Application Laid-Open No. 63-263209. In this oil deterioration measuring device, the remaining life of the oil is calculated from the oil deterioration rate calculated from the oil temperature using a predetermined function and the elapsed time after the oil change.

(Problems to be Solved by the Invention) However, in the above device, oil whose composition and performance are known, specifically, compatible oil (
Under that assumption, the deterioration state of the compatible oil is to be measured.
Such an oil deterioration measuring device can not only determine whether the new oil to be used is suitable for the vehicle in question, but also determine the accuracy of the new oil in the event that an inappropriate oil is used for the vehicle in question. It is not possible to grasp the state of deterioration. Therefore, if the user uses new oil that is inappropriate for the vehicle, there is a risk that various troubles such as cam seizure may occur due to the use of inappropriate new oil.

The present invention has been made in view of the above circumstances, and its first object is to provide an oil quality measuring device that can easily determine whether new oil is inappropriate for a vehicle.

The second object is to provide a vehicle that can prevent troubles caused by using inappropriate new oil.

(Means and effects for solving the problem) In order to achieve the above first object, the present invention includes an acidic substance adding means for adding an acidic substance to fresh oil as a measuring object, and An oil quality measuring device is characterized in that it comprises a voltage change amount measuring means for measuring a voltage change amount of new oil based on the addition of.

According to the configuration of the first invention, when an acidic substance is added to new oil as a measurement target, the acidic substance and the new oil react, and the more the new oil tends to deteriorate, the more rapidly the voltage increases. Since voltage drop occurs, the performance of the new oil can be recognized by understanding the state of the voltage drop of the new oil. Therefore, it is possible to easily determine whether the new oil is suitable for the vehicle.

Furthermore, in order to achieve the second object, the present invention is provided with an oil quality measuring device for measuring the quality of new oil after oil filling, and the oil quality measuring device is configured to contain acidic substances in the new oil. A vehicle characterized in that it has an acidic substance addition means for adding the acidic substance, and a voltage change amount measuring means for measuring the voltage change amount of the new oil based on the addition of the acidic substance. It's Toshide.

According to the configuration of the second invention, when an acidic substance is added to new oil as a measurement target, as in the case of the first invention, new oil that is prone to oil deterioration tends to have a tendency to suddenly cause a large voltage drop. Therefore, by understanding the state of the voltage drop of the new oil, it is possible to immediately recognize the performance of the new oil after lubrication, and it is possible to determine whether the new oil is suitable for the vehicle in question. It becomes possible. Therefore, based on the results of this determination, even if inappropriate new oil is filled, by stopping the use of the inappropriate new oil, vehicle troubles due to the use of the inappropriate new oil may occur. This will allow you to prevent this from happening.

(Example) Embodiments of the present invention will be described below based on the drawings.

In FIGS. 1 to 7, 1 is a cylinder head cover attached to a vehicle (cylinder head), not shown;
Inside the cylinder head cover 1, an oil quality measuring device 3 is provided near the oil filler port 2.

To explain the oil quality measuring device 3, the oil quality measuring device 3 has one tank 5. The tank 5 has an internal volume of approximately several tens of mβ.
A pair of opposing side walls in is configured with a pair of electrodes 25. An oil introduction lower is formed in the upper part of this tank 5, and when new oil 8 (indicated by an arrow in FIG. 1) is injected from the oil inlet 2 of the cylinder head cover 1,
The new oil 8 is introduced into the tank 5 via an oil introduction lower. On the other hand, a discharge pipe 10 is provided at the bottom of the tank 5.
is connected, and a solenoid valve 1 is installed in the middle of this discharge pipe 10.
1 is interposed. The discharge pipe 10 extends downward, and its discharge port is located within the rad cover 1 to the cylinder. The electromagnetic pusher 1 is known and has a function of opening and closing the inside of the discharge pipe 11 to the outside.

A container 27 containing hydrochloric acid (HCl2) 26 as an acidic substance is disposed above the cylinder rad cover 1, and the inside of the container 27 and the inside of the tank 5 are communicated via a dripping vibrator 28. . A solenoid valve 29 is interposed in the middle of the vibrator 28, and hydrochloric acid 26 is dripped into the tank 5 from inside the container 27 via the vibrator 28 by opening and closing the solenoid valve 29.

17 is a control unit, and the control unit 17 receives an oil filling signal from an oil filling detection sensor 18, an oil filling completion signal from a liquid level detection sensor 19, a voltage signal from a pair of electrodes 25, and an ON/OFF signal from a key switch 30. A signal is input from the control unit 17, and the solenoid valve 11,
Output signals are output to the electromagnetic valve 29 and the display device 21.

Next, the outline of the measurement contents of the oil quality measuring device will be explained.

The principle of measuring oil quality in this example is as shown in FIG.
: 10W20, characteristic line f3 = 5W50), when acidic substances are added to fresh oil 8, due to the difference in the types of additives such as antioxidants and cleaning dispersants, there is a sudden reaction and a large voltage increase. There are some that drop the voltage gradually and others that gradually drop the voltage while neutralizing acidic substances, and this is based on the discovery that the former is particularly susceptible to oil deterioration. Furthermore, the third
In the case shown in the figure, the HC
9! is dripping.

Therefore, when measuring the quality of the new oil 8, compare the voltage drop with the standard oil, and if the voltage drop is greater than the voltage drop with the standard oil, the new oil 8 is considered to be unsuitable for the vehicle. This means that it can be determined that

Next, the operation of the above device will be specifically explained based on the flowchart shown in FIG. Note that R indicates a step.

First, in R1, the presence or absence of a lubricating signal is read, and based on the presence or absence of the lubricating signal, it is determined in R2 whether or not lubricating the cylinder has started from the lubricating port 2 of the rad cover 1. When the start of lubrication is not detected,
While returning to R1, when R2 is YES, R
3, the solenoid valve 11 is closed.

Next, the liquid level of the new oil 8 in the tank 5 is read in R4,
In the next step R5, it is determined whether a predetermined amount of new oil 8 has been filled in the tank 5 or not. When R5 is NO, the process returns to R4, while when R5 is YES, a key signal is read in R6, and in the next R7, it is determined whether or not the key has been turned on. When R7 is NO, it returns to R6, while when R7 is YES, the voltage Vl of the new oil 8 is measured by the pair of electrodes 25 at R8, and the solenoid valve 29 is opened at the next R9, and the HCff26 is turned on. Dripping begins. Then, in the next RIO, the total amount of HCl226 dropped was 5m9. It is determined whether or not it has become.

This determination is performed, for example, by controlling the time from the start of dropping HCl226. When this R10 is No, while the dropping of HCff26 continues, the RI
When O is YES, in R11, the pair of electrodes 2
5, the voltage V2' of the new oil 8 is measured, and in R12, the solenoid valve 29 is closed to stop dripping of the HCff 26. Then, in R13, the R8
The difference ■3゛ between ■■ and the V2° of R11 is calculated,
In the next R14, the difference ■ when the ■3° is standard oil. ° (corresponding to the above-mentioned Vz') is determined. When R14 is YES, new oil 8 is displayed as a compatible oil by the display device 21 in R15,
When R14 is No, the display device 21 displays new oil 8 as inappropriate new oil in R16.

Then, at R17, the solenoid valve 11 is opened, and the new oil 8 in the tank 5 is discharged via the discharge pipe IO.

Therefore, in such a device, it is possible to prevent the use of non-conforming oil as new oil by simple discrimination using the voltage drop with respect to acidic substances, and to prevent the occurrence of vehicle troubles due to the use of non-conforming oil. This can be prevented.

In addition, in this example, even if the new oil is determined to be inappropriate, in order to effectively utilize the inappropriate new oil, even if the inappropriate new oil is used, troubles may occur in the vehicle. The oil change distance that will not be changed is predicted and displayed on the display device 21.

When predicting the oil change distance, the relationship between the oil change distance and the voltage change (■.゛ ■yo°) is as shown in Figure 5, so new oil is the compatible oil (P4?! above).
! oil), increase the oil change distance to 15,000 +1. Letting X be the oil change distance for inappropriate new oil, it can be determined as follows.

1 5000: x”Va: Vz In addition, as another aspect of effectively utilizing inappropriate new oil, the inappropriate new oil may be made into a new oil. In this case, the 6th
As shown in the figure, the suction pressure of the oil pump 22 is used to replenish necessary additives 23, such as a calcium sulfonate antioxidant having excellent oxidation resistance. The replenishment amount Q of the additive 23 is generally 300 ppm in the standard oil, and the relationship between the addition amount and the voltage change amount of the new oil (Vo'Vx') is shown in FIG. Therefore, it can be obtained as follows.

300: (300-Q)=Vo': V!
■GoQ=300X (1-)V.

In addition, in FIG. 6, 24 is an oil pan.

Although the embodiments have been described above, the present invention includes the following.

■In addition to engine oil, it can also be applied to MT oil, AT oil, differential oil, etc.

■Acidic substances are not limited to HCl2.

■Acidic substances should be added all at once instead of gradually dropping a certain amount.

(Effects of the Invention) As described above, the first invention can provide an oil quality measuring device that can easily determine whether new oil is inappropriate for a vehicle.

Furthermore, according to the second invention, it is possible to provide a vehicle that can prevent troubles caused by using inappropriate new oil.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram explaining the present invention in detail, FIG. 2 is a perspective view showing an oil quality measuring device according to an embodiment, FIG. 3 is a characteristic diagram showing voltage-time characteristics of various new oils, Figure 4 is a flowchart showing an example of operation according to the embodiment, Figure 5 is a diagram showing the relationship between voltage change and oil change distance, Figure 6 is an explanatory diagram explaining an example of additive replenishment, and Figure 7 is FIG. 3 is a diagram showing the relationship between the amount of additive added and voltage change. 3 ・ 5 ・ 8 ・ 7 5 6 7 8 Oil quality measuring device Tank Fresh oil・Control unit・Pair of electrodes・HCβ・Container・Vibe for dripping Constant Figure 4 Figure 6 f Il tl:, Stroke distance

Claims (2)

[Claims] (1) It is characterized by comprising an acidic substance addition means for adding an acidic substance to new oil as a measurement target, and a voltage change amount measuring means for measuring a voltage change amount of the new oil based on the addition of the acidic substance. Oil quality measuring device. (2) An oil quality measuring device for measuring the quality of new oil after oil filling is provided, and the oil quality measuring device includes an acidic substance adding means for adding an acidic substance to the new oil, and an acidic substance adding means based on the addition of the acidic substance. A vehicle comprising: voltage change amount measuring means for measuring a voltage change amount of new oil.