JPS5943299A - Device for indicating exchange timing of lubricating oil for vehicle - Google Patents

Abstract

PURPOSE:To exchange lubricaring oil at a suitable time, by detecting at least first and second physical quantities which are closely related with degree of deterioration of lubricating oil, adding these quantities, periodically integrating such added results, and expressing an alarm when such an integrated quantity reaches a predetermined deterioration permissible limit. CONSTITUTION:An odometer 10 detects running distance per each certain value to generate a first binary signal. A F-V converter 40 generates speed voltage as converted from a signal from a speed sensor 30 for detecting a rotational speed of an internal-combustion engine, while an A-D converter 50 sequentially converts oil temperature signal from a temperature sensor 20 for detecting temperature of lubricating oil in an oil pan, and the speed voltage from the F-V converter 40 to a digital signal, and generates the second and third binary signals, respectively. A microcomputer 70 adds the values of the first to the third binary signal and updates same. Such values as added and updated are compared with a deterioration permissible limit of lubricating oil and an alarm is expressed by an alarm lamp 80.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicular warning device, and is particularly suitable for use in a vehicle to warn when it is time to change the lubricating oil of an internal combustion engine, lance transmission, etc. mounted on a vehicle. This invention relates to a lubricating oil change time warning device.

In general, the intersection of the internal combustion engine, transmission, etc. of a vehicle, the intersection of the 11 bones of the engine, the 1st line of the 1st constant distance of the 1st part of the 1st part, or, 1.1.
After 1 constant rotation time, 1be) Kokichi is blown away by lno.
However, such idle exchanges are often forgotten,
(7) Result, Jun i'j')? l11 ノ'j';
(j) U n ;/y; 1. 'l limit v11, f
＋It, z, te, internal combustion engine, 1-Lance transmission, etc. are not allowed to operate smoothly.
~ru. Unfortunately, the degree of deterioration of the lubricating oil is determined not only by the vehicle's distance training or luck, but also by internal combustion (road condition 15 + 1 of the rear, transmission, etc.)
(The operating condition of Φ, the supercharger's absence, lubricating oil fΦJ:l'i and r11#1, I!J, etc. will also greatly affect the change.) Even if time 141j is complied with, there will be a problem that such exchange J147.lv1 will be too long considering the deterioration status of the lubricating oil.

The present invention does not focus on such factors.1. The purpose of this [] is to consider the multiple factors that determine the degree of deterioration of lubricating oil in the middle picture 1) lj conditions,
To provide a lubricating oil change time warning device for a vehicle, which warns that the degree of deterioration of the lubricating oil exceeds the TFF capacity limit and that it is time to replace the lubricating oil.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows an example of a lubricating oil change time warning device for a vehicle according to the present invention. teeth,
It includes an odometer 10, a temperature sensor 20, and a speed sensor 60. Odometer 10ba' is an electronic type, and the j of the relevant 1 river i+i]! I-+ is detected every time the vehicle travels a constant distance, and the detection result is generated as a first binary signal. A temperature sensor 20 detects the temperature of lubricating oil present in an oil pan installed on the side of the vehicle internal combustion engine, and generates this as an oil temperature (lucky sign).
Detects the rotational speed of the internal combustion engine and generates it as a speed signal.

The lubricating oil change time warning device consists of a frequency-voltage converter R114o (hereinafter referred to as the F-V converter 40) connected to the speed sensor 60, a temperature sensor 60, and the F-■ converter 4.
It is equipped with an A-D converter 50 connected to 0 and an A-board 60, and an F-■ converter 40 converts the frequency of the serial J ray; i ; of the speed sensor 6o to an analog IF. 1-1, and A-D.
The converter 50 kt lAn N (! 7-1 from 20 /lli i:u and F-■ The converter 4o sequentially de- and idically exchanges the speed pressure, and so on.

・Sixth binary figure υ and microphone τl: I interviewer 70
In response to the VC Yasumi, I asked 4)-.

The keyboard 60 has first to sixth set keys, a reset +- key k, and a first set l-key tf:f,
When the vehicle is equipped with a supercharger, the first set I-signal is generated by operating h. Key 7j position -1・'6o second
and the sixth master is the first T, f (for example, A
1) "ii" of S 0 grade and SD grade according to PI classification
ftura and Category 2 (e.g., according to A i” I classification [
112 grade and SF grade), operate the second and sixth cameras 1-1 to issue the 1st copy. -Also, the keyboard 1.6° reset key is micro:
Mileage distance of the vehicle from lmbiko-1 to taf o, +
Iil symbol: When resetting the lubricating oil temperature in the oil pan and the rotational speed of the internal combustion engine, the
:S iL generates a reset i'f: signal.

The microcomputer 70 stores in advance the 1 computer program required to execute the flowcharts shown in FIGS. 2 and 6.
0, Igt with A-D converter 5o and keyboard drawer 0
+ (While the computer program is repeatedly executed by the microcomputer 70, various calculation processes necessary for controlling the warning lamp 80 are performed.
has a non-volatile random access memory (hereinafter referred to as non-volatile RAM), and such non-volatile RAM
The memory contents immediately before the ignition switch of the vehicle is opened are stored as they are after the ignition switch is opened.

In this embodiment configured as described above, if the vehicle is put into a running state by turning the ignition switch and the microphone computer 70 is put into operation, this microcomputer 70 becomes the 21st controller. ) [) - In step 90, execution of the computer program is started according to the chart 1, and in step 100, the contents are read for the first time! ! Ji ()-(,, then 21:/Hyuuku)"IJ ri'",'l-f A 7'
``Do not return to step 110 through /-γ110, 130, 1j L,, step +30VrC, lower 11 different'', Mike ``1 computer, 90, 11 length timer counter, il n、?
The timer counter starts the predetermined time from 1 to 1 at the same time as the microcontroller starts operating, and is reset every time the predetermined time ends.
It starts to change.

7.7-tsu, for publication in 7”130 +iiJ 1
- Due to the relationship with the 111 market price of the own timer counter
YP] 5-Jc Naruyoshi, the miterrocomputer 7o outputs the first digit signal from the odometer 10 and the second and sixth decimal signals from the A-D converter 50. Step 1
50ε' Here, the first to sixth binary numbers A1) in step 140 are 11.1°" 2
+ P3) KekanishikifiiI P (F', Kabori Shidekoha is rewritten as addition 1u'fP, and then = l
11---Tag '-1 Grad:+;
Proceed to. Then, in judgment routine 16, J proceeds to step 161 where J compares the addition update value P in step 150 with the first allowable deterioration limit value F (IJ) of lubricating oil;
The microcomputer 70 processes such a stepper 16.
At 1, P (F (when 1, "N O-1 and half 1"
Separate P≧1! '(1147) when r""Sj (!:
't'1J5511i le. However, (~, -1 - the first mentioned
Degradation r [capacity limit cm F (11 is determined experimentally based on the existence of a supercharger (in other words, a high degree of deterioration of the lubricating oil), regardless of the type of lubricating oil). This value represents the allowable deterioration limit of the lubricating oil, and is stored in the microcomputer 70 in advance.

However, if the vehicle is equipped with a supercharger,
If the first set key of the keyboard 60 is operated in advance, the microcomputer 70, after determining "YES SJ" in step 161, performs steps 161 and 1- in relation to the first set 1- signal from the first set key. At step 166, it is sequentially determined as ['Y E SJ, and at step 167, a lighting signal is generated.As a result, the warning lamp 80 lights up in response to the lighting signal from the micro:1 pump 70, and a warning is sent to the driver. Internal combustion engine moisture t1'[/
Warns that it is time to replace the lII. As a result, the driver must change the +f+'l tfit oil ILj)'J
Even if you forget J, it's 14γ! 1 ranzo °80 warning f.

Based on the appropriate I, Juni'? t Replace 1111 and a1).

1, if the Φ vehicle in question does not have a 11υ supply and the 1st n'1 is adopted as the d'jl ffl oil for the internal combustion engine, then the keyboard draw 0's 2nd tenth 1- Ghee
If you operate the microcomputer 70
However, after determining that it is 1YEsJ at step 7°161, "YF281
and INO” and 1゛u, and the discrimination routine 16θ is
7j71 Second deterioration of oil, yr capacity limit fFi'-II F
(21 (!: ratio 11Q j Rustetsu-7”, 16
Proceed to step 4. In this case, such second deterioration i71 volume] 1R
Culm F (2) is J″L, which is experimentally determined as the first deterioration correction limit ro+Lp human threshold, with the adoption of the first class lubricant as +'+l, and the tth micro 1 is written in the computer 70.-1- When the determination routine 160 proceeds to the step 164 as if reached, the microcomputer 70 determines P(F
(2) When (7) [Identified as OJ, P 2 F (2)
Then, in step 165, the second set of transmissions from the keyboard 60 is determined as LYESI.
sj, and at step 167
A signal is generated and the warning lamp 80 is lit. J to this one
The driver can change the lubricating oil of the first class at a more appropriate time (similar to υ1) than in the case described in -.

In addition, if the heavy vehicle concerned does not have a supercharger and class 2 lubricant is used as the lubricant for the internal combustion engine, by operating the 6th set key on the keyboard 60 in advance, the microcomputer 70 advances the determination routine 160 to step 165 in the same manner as described above, and determines [NOJ] in relation to the sixth set 1- signal from the keyboard 60.
Addition history Wi1 direct p f H leap lZ oil 6th in 50
deterioration,? Step 166 of comparing with T capacity limit value F(3)
Proceed to. In this case, the sixth deterioration πF capacity limit value F(
3) iJ, 12, i assuming the adoption of lubricating oil No. 21f4
'52 Su, 1 white limit! , I, j i moe F(2) as a larger octopus) 1-j mera tt, /l-, which is written and written in the microcomputer 0. Therefore, in step 166, when the microcontroller 71-7 and P (F (2)), f'
It is determined that N o J, and F''-F (when 31, j'-'
, (1': Determine fE j [7, then step 16
7v iron point): J' (i "12) 4i (', occurs and police<1."//P80 is set.) By L, 1 car transfer fee υ-1, 11 small 11'+ of the 1st VRI! ] 1
Bone l mountain father ms lL'j! Man x D dl, i, i
+q +;t) :':t=11, the lj period can be replaced in the same manner as in the lj period. F6
0 reset 1- key (make...) L, microphone U
Jun Pimp Yu Tough 0 Power Ball, Sudden Tube 110,
7i (erY
Es-1 is determined, and in step 012D, the force at step 150 is +11 γ history #ri field 111 total Lee hin 1-, so no difference in rL will occur in subsequent performance.

Unfortunately, in the above embodiment, Ii+″i of each binary signal υ manually generated in step 140 is added as is 1: II(
For an example of adding to t 1.
In place of this, depending on the type of internal combustion engine, n? −
1) The weight (=J coefficient) related to the importance of the value of each binary signal is determined, and each result of multiplying the value of each binary signal by each of these Φ: coefficients is added to the addition value P. You may also do so.

Further, in the above embodiment, an example was described in which the present invention was adopted to determine the lubricating oil replacement timing kW'Mi for a vehicle internal combustion engine, but the present invention is not limited to this, and for example, - The present invention can also be applied to warn when it is time to replace lft oil, etc. of a transmission.

Further, in the embodiment described above, an example in which a warning is issued using a single warning lamp 80 has been described; however, instead of this,
For example, each song of blue, yellow, and red is adopted, and addition update f1f4. P is each deterioration rF capacity limit F(1) to F(
When reaching 80%, 90%, and 100% of 3), each of the blue, yellow, and red lamps may be lit to issue a blue warning, a yellow warning, and a red t3 warning; Instead of a warning lamp, for example, a liquid crystal cell may be used to display text indicating the replacement time.

1) In the embodiment described in IJ, reset 1-signal 3 was generated from key fob drawer 0, but instead of this, ii. ．． It is also possible to provide a set of reset switches for r, -l, so that the reset switch generates a reset ('E''<j) by replacing the lubricant.In such a case, 1111 A level sensor (・j) is added, and this level sensor detects a decrease in the amount of lubricating oil and monitors it carefully (
It is also possible to do so.

As explained above, the present invention V, therefore, +ji
As exemplified in Example 1 of Section J, 4 (adopted for both)
At least the first one is closely related to the degree of deterioration of the lubricant oil.
and the second physical nail, all of these detection results are generated as first and second detection signals, and the values of these detection signals are mutually multiplied and the results of this correction are integrated over time. , this reconnaissance result is predetermined as the deterioration π of the lubricating oil.
The feature of the structure is that it generates an output signal when the F capacity limit is reached and, in response to this output signal, warns that it is time to replace the lli'4 lubricant. be. As a result, by employing the device of the present invention, the problems mentioned at the beginning of this specification can be reliably eliminated, and the lubricating oil can always be replaced at an appropriate time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIGS. 2 and 6 are flow charts showing the operation of the microcomputer shown in FIG. Explanation of symbols 10...Odometer, 20...Temperature sensor, 60...
・・Speed sensor, 70 ・・Microcomputer, 8
0...Warning lamp. Applicant Nippondenso Co., Ltd. Agent Patent Attorney Teru Hase - Figure 1 Figure 2

Claims (1)

[Claims] a detection means for detecting at least first and second physical quantities closely related to the degree of deterioration of lubricating oil employed in heavy vehicles, and generating these two detection results as first and second detection signals, respectively; arithmetic means for adding the values of the respective detection signals to each other and accumulating the addition results over time, and generating an output signal when the accumulation result reaches a predetermined allowable deterioration limit value of the lubricating oil; A lubricating oil replacement time warning device for a vehicle, comprising warning means for warning that the lubricating oil replacement time has arrived in response to an output signal.