JPH0324818Y2 - - Google Patents
Info
- Publication number
- JPH0324818Y2 JPH0324818Y2 JP19804985U JP19804985U JPH0324818Y2 JP H0324818 Y2 JPH0324818 Y2 JP H0324818Y2 JP 19804985 U JP19804985 U JP 19804985U JP 19804985 U JP19804985 U JP 19804985U JP H0324818 Y2 JPH0324818 Y2 JP H0324818Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- differential pressure
- oil filter
- filter
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、内燃機関に設けられたオイルフイル
タの交換時期を検出する装置に関する。（従来の
技術と考案が解決しようとする問題点）
従来、オイルフイルタの交換時期を検出する装
置がなく、しかも、実際のオイルフイルタの汚
れ、目詰りを見るのも面倒であるので、オイルフ
イルタの交換は、大抵は使用期間や車両であれば
走行距離によりだいたいの見当で行なわれてい
た。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for detecting when to replace an oil filter provided in an internal combustion engine. (Problems to be solved by conventional technology and ideas) Conventionally, there was no device to detect when it is time to replace the oil filter, and it was also troublesome to check whether the oil filter was actually dirty or clogged. In most cases, replacement was done based on the period of use and the mileage of the vehicle.
よつて、まだ十分に使用できる状態であるのに
交換してしまつたり、交換時期をとつくに過ぎて
しまつて濾過機能が失われてエンジンの各滑動部
分が摩耗したり痛んでしまつたりするという問題
点があつた。 As a result, you may end up replacing the filter even though it is still in a usable condition, or you may end up replacing it past its due date and lose its filtration function, causing wear and tear on the various sliding parts of the engine. There was a problem with that.
そこで、例えば、実開昭59−91406号公報に記
載されているような技術的手段を応用し、第４図
に示すように、オイルフイルタ０１の前後差圧を
検出する差圧センサ０２を設け、オイルフイルタ
の目詰りによる抵抗増によつてオイルフイルタの
前後差圧が設定圧になつたらオイルフイルタ交換
時期を表示手段０３により表示するような装置Ｂ
が考えられる。 Therefore, for example, by applying technical means as described in Japanese Utility Model Application Publication No. 59-91406, a differential pressure sensor 02 is installed to detect the differential pressure across the oil filter 01, as shown in FIG. , a device B in which the display means 03 indicates the time to replace the oil filter when the differential pressure across the oil filter reaches the set pressure due to increased resistance due to oil filter clogging;
is possible.
しかしながら、この手段によると、単に前後差
圧と設定圧とを比較するだけであるので、オイル
フイルタ個々の抵抗のバラツキや、それに加え
て、オイルの種類の違いによる粘度の相違によつ
て初期のオイルフイルタ前後差圧が異なつてしま
い、その初期差圧と設定圧との巾が異なることと
なり、オイルフイルタ交換表示時期のオイルフイ
ルタの目詰り状態にバラツキが生じてしまうとい
う問題点があつた。 However, since this method simply compares the differential pressure across the front and rear and the set pressure, the initial There is a problem in that the differential pressure across the oil filter differs, and the range between the initial differential pressure and the set pressure differs, resulting in variations in the clogging state of the oil filter when the oil filter is replaced.
（問題点を解決するための手段）
本考案は、上述のような従来の問題点を解決し
てオイルフイルタ個々の抵抗バラツキやオイル粘
度の相違等の影響を受けることなくオイルフイル
タの目詰りを検出して、オイルフイルタの正確な
交換時期を表示することができる装置を提供する
ことを目的とし、この目的達成のために本考案で
は、以下に述べる解決手段とした。(Means for Solving the Problems) The present invention solves the conventional problems as described above and prevents clogging of oil filters without being affected by variations in resistance of individual oil filters or differences in oil viscosity. The object of the present invention is to provide a device that can detect and display the exact time to replace an oil filter, and to achieve this object, the present invention has adopted the following solution.
本考案の解決手段を、第１図に示すクレーム概
念図により説明すると、内燃機関のオイル系路１
に設けられ、オイル内の不純物を濾すオイルフイ
ルタ２と、該オイルフイルタ２の下流のオイル系
路１に設けられ、所定のオイル流動抵抗となる流
動抵抗手段３と、該流動抵抗手段３とオイルフイ
ルタ２との間のオイル系路内圧力を所定圧に保つ
調圧機構４と、前記オイルフイルタ２の前後の差
圧を検出する第１差圧検出手段５と、前記流動抵
抗手段３の前後の差圧を検出する第２差圧検出手
段６と、前記両差圧検出手段５，６からの信号
ａ，ｂに基づいて、オイルフイルタ前後差圧と流
動抵抗手段前後差圧とを比較する手段を設けると
共に、その差圧比較値をオイルフイルタ交換時に
０となるように補正した後オイルフイルタの目詰
りによる抵抗を示す実際目詰り抵抗値として検出
して、この実際目詰り抵抗値があらかじめ設定さ
れた設定目詰り抵抗値を超えると表示指令信号を
出力する交換時期検出手段７と、該交換時期検出
手段７からの表示指令信号ｃに基づいてオイルフ
イルタ交換時期であることを表示する表示手段８
と、を備えていることを特徴とする。 The solution of the present invention will be explained with reference to the conceptual diagram of the claim shown in FIG.
an oil filter 2 provided in the oil filter 2 to filter out impurities in the oil; a flow resistance means 3 provided in the oil line 1 downstream of the oil filter 2 to provide a predetermined oil flow resistance; A pressure regulating mechanism 4 that maintains the pressure in the oil system line between the oil filter 2 and the filter 2 at a predetermined pressure, a first differential pressure detection means 5 that detects the differential pressure before and after the oil filter 2, and a pressure difference detecting means 5 that detects the pressure difference before and after the oil filter 2; The differential pressure across the oil filter is compared with the differential pressure across the flow resistance means based on the signals a and b from the differential pressure detecting means 5 and 6. In addition to providing a means, the differential pressure comparison value is corrected so that it becomes 0 when the oil filter is replaced, and then detected as an actual clogging resistance value indicating the resistance due to oil filter clogging, and this actual clogging resistance value is determined in advance. A replacement time detection means 7 that outputs a display command signal when a set clogging resistance value is exceeded, and a display that indicates that it is time to replace the oil filter based on the display command signal c from the replacement time detection means 7. Means 8
It is characterized by having the following.
（作用）
従つて、本考案の内燃機関のオイルフイルタ交
換時期検出装置では、上述のような手段としたこ
とで、オイルフイルタの目詰り度合を示す実際目
詰り抵抗値は、オイルフイルタ交換時にはオイル
フイルタ個々の抵抗バラツキやオイル粘度のバラ
ツキに応じて補正されて０となり、初期値と設定
目詰り抵抗値との巾は常に一定となるため、正確
にオイルフイルタ交換時期を表示することができ
る。(Function) Therefore, in the oil filter replacement timing detection device for an internal combustion engine of the present invention, by using the above-mentioned means, the actual clogging resistance value indicating the degree of clogging of the oil filter can be determined by It is corrected to 0 depending on the resistance variation of each filter and the oil viscosity variation, and the width between the initial value and the set clogging resistance value is always constant, so the oil filter replacement time can be accurately displayed.
（実施例） 以下、本考案の実施例を図面により詳述する。(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
尚、この実施例を述べるにあたつて、自動車の
エンジンに適用された装置を例にとる。 まず、
実施例の構成を説明する。 In describing this embodiment, a device applied to an automobile engine will be taken as an example. first,
The configuration of the embodiment will be explained.
実施例の内燃機関のオイルフイルタ交換時期検
出装置Ａは、第２図に示すように、入力手段１
０、交換時期検出回路（交換時期検出手段）２
０、表示回路（表示手段）３０を主要な構成要素
としている。 The oil filter replacement timing detection device A for an internal combustion engine according to the embodiment has an input means 1 as shown in FIG.
0. Replacement time detection circuit (replacement time detection means) 2
0, the main component is a display circuit (display means) 30.
入力手段１０は、前記交換時期検出回路２０で
オイルフイルタ４１の交換時期を判断するにあた
つて必要な入力情報を提供する手段で、実施例で
は、第１差圧回路（第１差圧検出手段）１１、第
２差圧回路（第２差圧検出手段）１２、油温セン
サ１３、エンジン回転数センサ１４、リセツトス
イツチ１５を備えている。 The input means 10 is a means for providing input information necessary for the replacement time detection circuit 20 to determine the time to replace the oil filter 41. means) 11, a second differential pressure circuit (second differential pressure detection means) 12, an oil temperature sensor 13, an engine rotation speed sensor 14, and a reset switch 15.
第１差圧回路１１は、オイル系路４０に設けら
れたオイルフイルタ４１の前後差圧を検出するも
ので、この第１差圧回路１１は、第２図に示すよ
うに前記オイルフイルタ４１よりも上流に設けら
れた第１圧力センサ４２と下流に設けられた第２
圧力センサ４３とからの信号により差圧を検出
し、オイルフイルタ前後差圧△P1を示すオイル
フイルタ差圧信号ｄを出力する回路である。 The first differential pressure circuit 11 detects the differential pressure across the oil filter 41 provided in the oil line 40, and as shown in FIG. The first pressure sensor 42 is provided upstream and the second pressure sensor 42 is provided downstream.
This circuit detects the differential pressure based on the signal from the pressure sensor 43 and outputs an oil filter differential pressure signal d indicating the differential pressure ΔP 1 across the oil filter.
第２差圧回路１２は、オイル系路４０のオイル
フイルタ４１のすぐ下流に設けられたオリフイス
（オイル流動抵抗手段）４４の前後差圧を検出す
るもので、この第２差圧回路１２は、第２図示す
ように、前記オリフイス４４の下流に設けられた
第３圧力センサ４５と前記第２圧力センサ４３と
からの信号により差圧を検出し、オリフイス前後
差圧△P2を示すオリフイス差圧信号ｅを出力す
る回路である。 The second differential pressure circuit 12 detects the differential pressure across an orifice (oil flow resistance means) 44 provided immediately downstream of the oil filter 41 in the oil line 40. As shown in FIG. 2, the differential pressure is detected based on the signals from the third pressure sensor 45 provided downstream of the orifice 44 and the second pressure sensor 43, and the orifice difference indicating the differential pressure ΔP 2 across the orifice is detected. This is a circuit that outputs a pressure signal e.
尚、前記オイル系路４０のオイルフイルタ４１
とオリフイス４４との間には、この間の圧力を一
定に保つプレツシヤレギユレータ４６が設けら
れ、さらに、オイルフイルタ４１の前後はリリー
フバルブ４７を介してバイパス路４８によつても
連通されている。 Note that the oil filter 41 of the oil system path 40
A pressure regulator 46 is provided between the oil filter 41 and the orifice 44 to keep the pressure constant therebetween, and the front and rear of the oil filter 41 are also communicated by a bypass passage 48 via a relief valve 47. ing.
また、４９はオイルポンプである。 Further, 49 is an oil pump.
油温センサ１３は、オイル系路４０に設けら
れ、オイル０の温度を検出し、オイル温度ｔに応
じた油温信号ｆを出力するセンサである。 The oil temperature sensor 13 is a sensor that is provided in the oil line 40, detects the temperature of oil 0, and outputs an oil temperature signal f according to the oil temperature t.
エンジン回転数センサ１４は、エンジン出力軸
等に設けられ、エジン回転数ｎを検出し、その回
転数に応じたエンジン回転数信号ｇを出力する。 The engine rotation speed sensor 14 is provided on an engine output shaft or the like, detects the engine rotation speed n, and outputs an engine rotation speed signal g corresponding to the engine rotation speed.
リセツトスイツチ１５は、車室等に設けられ、
投入によりリセツト時（オイルフイルタ交換時）
を検出し、スイツチ信号ｈを出力するセンサであ
る。 The reset switch 15 is provided in the vehicle interior, etc.
When reset by turning on (when replacing oil filter)
This is a sensor that detects and outputs a switch signal h.
交換時期検出回路２０は、オイル温度及びエン
ジン回転数が所定値であるという条件の下で、両
差圧回路１１，１２からの両差圧信号ｄ，ｅによ
りオイルフイルタ４１の実際目詰り抵抗値△Ｒを
算出すると共に、この実際目詰り抵抗値△Ｒが設
定目詰り抵抗値△* R以上となつた場合に表示指令
信号ｉを出力する検出回路で、実施例では、第１
ゲート回路２１、第２ゲート回路２２、ゲート開
閉制御回路２３、第１差分検出回路２４、第３ゲ
ート回路２５、出力補正回路２６、第２差分検出
回路２７、出力回路２８を備えている。 The replacement time detection circuit 20 detects the actual clogging resistance value of the oil filter 41 based on the differential pressure signals d and e from the differential pressure circuits 11 and 12 under the condition that the oil temperature and engine speed are at predetermined values. This is a detection circuit that calculates △R and outputs a display command signal i when the actual clogging resistance value △R exceeds the set clogging resistance value △ * R .
It includes a gate circuit 21, a second gate circuit 22, a gate opening/closing control circuit 23, a first difference detection circuit 24, a third gate circuit 25, an output correction circuit 26, a second difference detection circuit 27, and an output circuit 28.
第１ゲート回路２１及び第２ゲート回路２２
は、ゲート開閉制御回路２３から開制御信号ｊが
入力されたときのみ、両差圧信号ｄ，ｅを第１、
第２差分検出回路２４，２７及び出力補正回路２
６へ通過させる回路である。 First gate circuit 21 and second gate circuit 22
only when the opening control signal j is input from the gate opening/closing control circuit 23, the differential pressure signals d and e are changed to the first
Second difference detection circuit 24, 27 and output correction circuit 2
This is a circuit that allows the signal to pass through to 6.
ゲート開閉回路２３は、油温信号ｆ及びエンジ
ン回転数信号ｇによりオイル温度及びエンジン回
転数が所定値であることが検出されたときに開制
御信号ｊを出力する回路である。 The gate opening/closing circuit 23 is a circuit that outputs an opening control signal j when it is detected that the oil temperature and engine speed are at predetermined values based on the oil temperature signal f and the engine speed signal g.
第１差分検出回路２４は、両差圧信号ｄ，ｅを
入力してオイルフイルタ前後差圧△P1とオリフ
イス前後差圧△P2を比較し、その差圧比較値△
Ｐ（＝△P1−△P2）を示す差圧比較信号ｋを出力
する。 The first difference detection circuit 24 inputs both differential pressure signals d and e, compares the differential pressure across the oil filter △P 1 and the differential pressure across the orifice ΔP 2 , and calculates the differential pressure comparison value △
A differential pressure comparison signal k indicating P (=ΔP 1 −ΔP 2 ) is output.
第３ゲート回路２５は、前記リセツトスイツチ
１５からスイツチ信号ｈが入力されたときのみ、
差圧比較信号ｋを出力補正回路２６へ通過させる
回路である。 The third gate circuit 25 operates only when the switch signal h is input from the reset switch 15.
This circuit allows the differential pressure comparison signal k to pass to the output correction circuit 26.
出力補正回路２６は、オイルフイルタ４１の目
詰り程度を示す実際目詰り抵抗値△Ｒをリセツト
操作時（オイルフイルタ交換時）に初期値となる
ように、オイルフイルタ差圧信号ｄに補正を加え
て補正オイルフイルタ差圧信号ｌを出力する回路
で、この補正オイルフイルタ差圧信号ｌは、リセ
ツト操作時における第１差分検出回路２４からの
差分比較値△Ｐを補正値△P0とし、オイルフイ
ルタ前後差圧△P1から補正値△P0を差し引いた
補正オイルフイルタ前後差圧△U The output correction circuit 26 corrects the oil filter differential pressure signal d so that the actual clogging resistance value ΔR, which indicates the degree of clogging of the oil filter 41, becomes the initial value at the time of the reset operation (when replacing the oil filter). This circuit outputs a corrected oil filter differential pressure signal l, which uses the difference comparison value △P from the first difference detection circuit 24 at the time of the reset operation as a correction value △P 0 , and outputs the corrected oil filter differential pressure signal l. Corrected differential pressure across the oil filter △ U by subtracting the correction value △P 0 from the differential pressure across the filter △P 1
Claims (1)
不純物お濾すオイルフイスタと、 該オイルフイルタの下流のオイル系路に設けら
れ、所定のオイル流動抵抗となる流動抵抗手段
と、 該流動抵抗手段とオイルパンとの間のオイル系
路内圧力を所定圧に保つ調圧機構と、 前記オイルフイルタ前後の差圧を検出する第１
差圧検出手段と、 前記流動抵抗手段の前後の差圧を検出する第２
差圧検出手段と、 前記両差圧検出手段からの信号に基づいて、オ
イルフイスタ前後差圧と流動抵抗手段前後差圧と
を比較する手段を設けると共に、その差圧比較値
をオイルフイルタ交換時に０となるように補正し
た後オイルフイルタの目詰りによる抵抗を示す実
際目詰り抵抗値として検出して、この実際目詰り
抵抗値があらかじめ設定された設定目詰り抵抗値
を超えると表示指令信号を出力する交換時期検出
手段と、 該交換時期検出手段からの表示指令信号に基づ
いてオイルフイルタ交換時期であることを表示す
る表示手段と、 を備えていることを特徴とする内燃機関のオイル
フイルタ交換時期検出装置。[Claims for Utility Model Registration] An oil fister provided in an oil system line of an internal combustion engine to filter out impurities in the oil, and a flow resistance means provided in an oil system line downstream of the oil filter to provide a predetermined oil flow resistance. , a pressure regulating mechanism that maintains the pressure within the oil system line between the flow resistance means and the oil pan at a predetermined pressure, and a first pressure regulating mechanism that detects the differential pressure before and after the oil filter.
differential pressure detection means; and a second device for detecting the differential pressure before and after the flow resistance means.
A differential pressure detection means is provided, and a means is provided for comparing the differential pressure across the oil fister and the differential pressure across the flow resistance means based on the signals from both the differential pressure detection means, and the differential pressure comparison value is set to zero when the oil filter is replaced. After correcting it so that it is, it is detected as the actual clogging resistance value that indicates the resistance due to oil filter clogging, and when this actual clogging resistance value exceeds the preset clogging resistance value, a display command signal is output. An oil filter replacement time for an internal combustion engine, comprising: a replacement time detection means for detecting oil filter replacement; and a display means for displaying that it is time to replace the oil filter based on a display command signal from the replacement time detection means. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19804985U JPH0324818Y2 (en) | 1985-12-23 | 1985-12-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19804985U JPH0324818Y2 (en) | 1985-12-23 | 1985-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62105318U JPS62105318U (en) | 1987-07-04 |
| JPH0324818Y2 true JPH0324818Y2 (en) | 1991-05-30 |
Family
ID=31158379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19804985U Expired JPH0324818Y2 (en) | 1985-12-23 | 1985-12-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324818Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2418988B (en) * | 2004-10-06 | 2008-09-17 | Ford Global Tech Llc | A soot management system for an engine |
| JP5515375B2 (en) * | 2009-04-03 | 2014-06-11 | コベルコ建機株式会社 | Construction equipment filter clogging detection device |
| JP7115753B2 (en) * | 2019-06-20 | 2022-08-09 | 株式会社塩 | FLUID SYSTEM, INSPECTION DEVICE, INSPECTION METHOD, FLUID SYSTEM CONTROL METHOD AND CONTROL PROGRAM |
| WO2021044526A1 (en) * | 2019-09-03 | 2021-03-11 | 株式会社島津製作所 | Multiple valve device and cargo handling device equipped with multiple valve device |
-
1985
- 1985-12-23 JP JP19804985U patent/JPH0324818Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62105318U (en) | 1987-07-04 |
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