JPH02199212A - Oil deterioration detector for internal combustion engine - Google Patents
Oil deterioration detector for internal combustion engineInfo
- Publication number
- JPH02199212A JPH02199212A JP1862989A JP1862989A JPH02199212A JP H02199212 A JPH02199212 A JP H02199212A JP 1862989 A JP1862989 A JP 1862989A JP 1862989 A JP1862989 A JP 1862989A JP H02199212 A JPH02199212 A JP H02199212A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- viscosity
- light
- transmittancy
- data
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 230000006866 deterioration Effects 0.000 title abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 5
- 230000002950 deficient Effects 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 7
- 238000010790 dilution Methods 0.000 abstract description 6
- 239000012895 dilution Substances 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 64
- 230000001105 regulatory effect Effects 0.000 description 8
- 239000013307 optical fiber Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/11—Oil dilution, i.e. prevention thereof or special controls according thereto
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Testing Of Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、内燃機関のオイル不良検知装置に係り、とく
に、自動車、オートバイ、船外機等で使用される種々の
オイルの劣化を透光量の減少を利用して検知する内燃機
関のオイル不良検知装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an oil defect detection device for an internal combustion engine, and in particular, to a device for detecting deterioration of various oils used in automobiles, motorcycles, outboard motors, etc. The present invention relates to an oil defect detection device for an internal combustion engine that detects oil failure using a decrease in the amount of oil.
従来より、内燃機関のオイル不良検知装置としては、オ
イル劣化検知装置が、知られている。これは、発光素子
と受光素子を用いて、発光素子から出力される光を潤滑
油を透過せしめ、この透過光を受光素子で受けて光電変
換し、受光素子の出力により透光量を電気的に検出し、
この透光量の減少を利用して当該潤滑油の劣化具合を検
知するものである。例えば、実開昭５５−１７４０３号
公報、実開昭６０−１３１６１５号公報記載の考案等が
ある。2. Description of the Related Art Oil deterioration detection devices are conventionally known as oil defect detection devices for internal combustion engines. This uses a light-emitting element and a light-receiving element to transmit the light output from the light-emitting element through lubricating oil, and this transmitted light is received by the light-receiving element and converted into electricity, and the amount of transmitted light is electrically converted by the output of the light-receiving element. detected,
This decrease in the amount of transmitted light is used to detect the degree of deterioration of the lubricating oil. For example, there are devices described in Japanese Utility Model Application Publication No. 55-17403 and Japanese Utility Model Application Publication No. 60-131615.
第４図にこの種の装置の従来例を示す。FIG. 4 shows a conventional example of this type of device.
この第４図の従来例は、エンジン５０内の底部に装備さ
れた発光素子である発光ダイオード５１と、この発光ダ
イオード５１に対向して設けられた受光素子であるフォ
トダイオード５２とを備えている。発光ダイオード５１
には、判定回路５３を介して電源回路５４から電源が供
給されるようになっている。判定回路５３は、図示しな
い増幅器の出力電圧により透光量が予め定めた閾値以下
か否かを判定する。更に、この判定回路５３には、オイ
ル劣化報知用のアラームランプ５５が併設されている。The conventional example shown in FIG. 4 includes a light emitting diode 51 which is a light emitting element installed at the bottom of an engine 50, and a photodiode 52 which is a light receiving element provided opposite to the light emitting diode 51. . light emitting diode 51
Power is supplied from a power supply circuit 54 via a determination circuit 53. The determination circuit 53 determines whether the amount of transmitted light is less than or equal to a predetermined threshold based on the output voltage of an amplifier (not shown). Furthermore, this judgment circuit 53 is also provided with an alarm lamp 55 for notifying oil deterioration.
この第４図に示す従来例によると、発光ダイオード５１
から出力される光をエンジン５０内のオイルを透過せし
め、この透過光をフォトダイオード５２で受けて光電変
換し、このフォトダイオード５２の出力電圧により判定
回路５３で透光量が予め定めた閾値以下か否かを判定し
、閾値以下である場合には、アラームランプ５５が点灯
する。According to the conventional example shown in FIG. 4, the light emitting diode 51
The light output from the engine 50 is transmitted through the oil in the engine 50, and the transmitted light is received by a photodiode 52 and photoelectrically converted. Based on the output voltage of the photodiode 52, a determination circuit 53 determines whether the amount of transmitted light is below a predetermined threshold. It is determined whether or not the threshold value is lower than the threshold value, and the alarm lamp 55 is lit.
これにより、オペレータは当該オイルが交換時期に達し
たことを容易に知ることが出来る。This allows the operator to easily know that the oil has reached the time to be replaced.
しかしながら、上記従来例においては、ピストンリング
の異常磨耗等により燃料の吹き抜けが起こり、オイルが
希釈された場合に、透光量が増加するため出力電圧が閾
値（オイル交換時レベル）を常に上回る。このため、オ
イルが使用不可能な状態（特に粘度が異常に低下してい
る）にもかかわらず、アラームランプが点灯しないため
、オペレータはこれを認識することができない。従って
、オイル交換を行うことなく運転を続行し、オイル粘度
の低下によりエンジンの異常磨耗が生じるという不都合
を有していた。However, in the above-mentioned conventional example, when fuel blow-by occurs due to abnormal wear of the piston ring and the oil is diluted, the amount of transmitted light increases, so the output voltage always exceeds the threshold value (level at oil change). Therefore, even though the oil is in an unusable state (in particular, the viscosity has decreased abnormally), the alarm lamp does not light up, so the operator cannot recognize this. Therefore, the engine continues to be operated without changing the oil, causing abnormal wear of the engine due to a decrease in oil viscosity.
本発明の目的は、かかる従来例の有する不都合を改善し
、とくに、燃料の吹き抜は等によるオイルの希釈により
オイルの粘度低下が生じた場合に、これを検出すること
が可能なオイル不良検知装置を提供することにある。An object of the present invention is to improve the disadvantages of the conventional example, and in particular, to detect oil failure that is capable of detecting a decrease in the viscosity of the oil due to oil dilution caused by fuel blowing, etc. The goal is to provide equipment.
本発明では、エンジンの底部を成すオイルパンから出発
し、当該オイルパンに帰還するオイル循環経路を設けて
いる。このオイル循環経路の一部に当該オイル循環経路
内のオイルの圧力を一定に調節する圧力調整手段を介装
し、この圧力調整手段の下流側に温度センサと流速セン
サを装備してイル。また、オイル循環経路に、当該オイ
ル循環経路を介して一方の側に発光手段を、他方の側に
受光手段をそれぞれ配設している。更に、受光手段にて
検出される透光量が予め定めた閾値以下か否かを判定す
る判定手段と、この判定手段に併設された表示手段とを
備えている。そして、判定手段が、温度センサと流量セ
ンサ計とで得られたデータに基づき、オイルの粘度変化
を算出するとともに、この算出された粘度変化と検出さ
れた透光量とによりオイルの不良の可否を総合的に判断
する機能を備えているという構成を採っている。これに
よって、前述した目的を達成しようとするものである。In the present invention, an oil circulation path is provided that starts from an oil pan forming the bottom of the engine and returns to the oil pan. A pressure adjusting means for regulating the pressure of the oil in the oil circulation path to a constant level is installed in a part of the oil circulation path, and a temperature sensor and a flow rate sensor are installed downstream of the pressure adjusting means. Furthermore, a light emitting means is provided on one side of the oil circulation path, and a light receiving means is provided on the other side of the oil circulation path. The apparatus further includes a determining means for determining whether the amount of transmitted light detected by the light receiving means is equal to or less than a predetermined threshold, and a display means provided alongside the determining means. The determination means calculates the change in viscosity of the oil based on the data obtained by the temperature sensor and the flow rate sensor, and determines whether the oil is defective based on the calculated viscosity change and the detected amount of light transmission. The system is structured so that it has the ability to make comprehensive judgments. This aims to achieve the above-mentioned purpose.
以下、本発明の一実施例を第１図ないし第３図に基づい
て説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
この第１図に示す実施例は、エンジン１０の底部を成す
オイルパン１０ａから出発し図示しないオイルポンプを
介して当該オイルパン１０ａに帰還するオイル循環経路
１１を備えている。The embodiment shown in FIG. 1 includes an oil circulation path 11 starting from an oil pan 10a forming the bottom of the engine 10 and returning to the oil pan 10a via an oil pump (not shown).
このオイル循環経路１１の一部に当該循環経路ｌｌ内の
オイルの圧力を一定に調節する圧力調整手段としての圧
力調整弁６が介装されている。また、この圧力調整弁６
の下流側には、温度センサ１と流速センサとしての流量
計２が設けられている。A pressure regulating valve 6 is interposed in a part of the oil circulation path 11 as a pressure regulating means for regulating the pressure of the oil in the circulation path ll to a constant value. In addition, this pressure regulating valve 6
A temperature sensor 1 and a flow meter 2 as a flow rate sensor are provided on the downstream side.
更に、これらの下流側にはオイル循環経路１１の一部を
形成する検油部ケース本体４が装備されている。この検
油部ケース本体４を介して一方の側には発光側の光ファ
イバ５が配設され、他方の側には受光側の光ファイバ６
が配設されている。Further, on the downstream side thereof, an oil tester case body 4 forming a part of the oil circulation path 11 is installed. A light emitting side optical fiber 5 is disposed on one side of the oil detector case body 4, and a light receiving side optical fiber 6 is disposed on the other side.
is installed.
これらの光ファイバ５．６のそれぞれの一端は、相互に
対向してファイバ対向部７が形成されている。このファ
イバ対向部７と検油部ケース本体４とにより検油部３が
構成されている。One end of each of these optical fibers 5.6 is formed with a fiber facing portion 7 facing each other. The fiber opposing portion 7 and the oil detector case body 4 constitute the oil detector 3.
光ファイバ５の他端には、当該光ファイバ５の端面に対
向した状態で発光手段としての発光グイ、オード８が装
備されている。これに対応して、光ファイバ６の他端に
は、受光手段としてのフォトダイオード９が当該光ファ
イバ６の端面に対向した状態で装備されている。The other end of the optical fiber 5 is equipped with a light emitting device 8 as a light emitting means, facing the end surface of the optical fiber 5. Correspondingly, a photodiode 9 as a light receiving means is provided at the other end of the optical fiber 6 so as to face the end surface of the optical fiber 6 .
そして、発光ダイオード８には、前述した従来例と同様
に、判定手段としての判定回路１２を介して電源回路２
０から電源が供給されるようになっている。The light emitting diode 8 is connected to a power supply circuit 2 via a determination circuit 12 as a determination means, as in the conventional example described above.
Power is supplied from 0.
この判定回路１２は、フォトダイオード９にて検出され
る透光量が予め定めた閾値以下か否かを判定する機能を
有している。この判定回路１２には、判定の結果を表示
する表示手段としてのオイル交換ランプ１３とアラーム
ランプ１４とが併設されている。更に、本実施例におい
ては、この判定回路１２に対し、前述した温度センサ１
と流量計２からそれぞれの測定データが出力されるよう
になっている。これに対応して、判定回路１２では、予
め通常のオイルの走行距離、透光量及び粘度の関係を記
憶し、温度センサ１と流量計２からのデータに基づきオ
イルの粘度変化を算出する機能と、この算出された粘度
変化と検出された透光量とによりオイルの不良の可否を
総合的に判断する機能とを備えている。This determination circuit 12 has a function of determining whether the amount of transmitted light detected by the photodiode 9 is less than or equal to a predetermined threshold value. The determination circuit 12 is provided with an oil change lamp 13 and an alarm lamp 14 as display means for displaying the determination result. Furthermore, in this embodiment, the above-mentioned temperature sensor 1 is used for this determination circuit 12.
and the flowmeter 2 output the respective measurement data. Correspondingly, the determination circuit 12 has a function of storing in advance the relationship between normal oil travel distance, amount of light transmission, and viscosity, and calculating the change in oil viscosity based on data from the temperature sensor 1 and flow meter 2. and a function of comprehensively determining whether or not the oil is defective based on the calculated viscosity change and the detected amount of light transmission.
次に、上記実施例の作用・動作を説明する。Next, the function and operation of the above embodiment will be explained.
発光ダイオード８から出力される光を検油部ケース本体
４内のオイルを透過せしめ、この透過光をフォトダイオ
ード９で受けて光電変換し、このフォトダイオード９の
出力電圧により判定回路１２で透光量が予め定めた閾値
（第２図の（１）のＶ、）以下か否かを判定し、閾値以
下である場合には、オイル交換ランプ１３が点灯するす
るようになっている。これ点は、従来例と同様である。The light output from the light emitting diode 8 is transmitted through the oil in the oil inspection unit case body 4, and this transmitted light is received by a photodiode 9 and photoelectrically converted. It is determined whether the amount is below a predetermined threshold value (V in (1) in FIG. 2), and if it is below the threshold value, the oil change lamp 13 is turned on. This point is similar to the conventional example.
本実施例では、これに加えて、オイルの粘度の異常低下
をも検出し得る。In addition to this, in this embodiment, an abnormal decrease in oil viscosity can also be detected.
これについて詳述する。判定回路１２は、予め第２図（
１）に示す通常の走行距離と透光量の関係、第２図（２
）に示す走行距離と粘度の関係を記憶している。この内
、通常の走行距離と透光量の関係は、実際にはフォトダ
イオード９の出力増幅用の図示しない増幅器の出力電圧
と走行距離との関係として記憶されている。そして、温
度センサｌ及び流量計からの温度データと流速データ（
経路の直径が一定であれば流量を測定すれば流速を算出
できる）とを受けた場合に、この判定回路１２では、所
定の演算（下記式■参照）を行って粘度を算出する。This will be explained in detail. The determination circuit 12 is configured in advance to perform the determination as shown in FIG.
The relationship between the normal running distance and the amount of light transmitted as shown in Figure 1), Figure 2 (2)
) is memorized as the relationship between travel distance and viscosity. Of these, the normal relationship between the travel distance and the amount of light transmitted is actually stored as the relationship between the output voltage of an amplifier (not shown) for amplifying the output of the photodiode 9 and the travel distance. Then, temperature data and flow velocity data (
If the diameter of the path is constant, the flow velocity can be calculated by measuring the flow rate), the determination circuit 12 calculates the viscosity by performing a predetermined calculation (see formula (2) below).
（一般に、流体の粘度を示す動粘性係数νは、ν＝μ／
ρ ・・・・・・・・・・・・■で表
される。ここに、μは粘性係数と呼ばれる比例定数で流
体の種類と温度により定まる。また、ρは密度である。(In general, the kinematic viscosity coefficient ν, which indicates the viscosity of a fluid, is ν=μ/
ρ ・・・・・・・・・・・・■ Here, μ is a proportionality constant called the viscosity coefficient, which is determined by the type of fluid and temperature. Moreover, ρ is the density.
同一流体について粘性係数μは、温度Ｔの関数（これを
、粘度曲線と呼ぶ）として、
μ＝Ｆ （Ｔ） ・・・・・・・・
・・・・■と表せる。The viscosity coefficient μ for the same fluid is expressed as a function of temperature T (this is called a viscosity curve): μ=F (T) ・・・・・・・・・・・・
...It can be expressed as ■.
一方、連続の式から質量流量は、経路内のどの位置でも
、ρＶＡで表される。即ち、
ρＶＡ＝に＝定数 ・・・・・・・・・・・
・■となる。経路の直径が等しいとすれば、ρＶ＝に／
Ａ＝に＝定数 ・・・・・・・・・・・・■式■、
■、■から、
シーＦ （Ｔ） ・Ｖ／ｋ ・・・・・・・
・・・・・■となる。例えば、上記０式を用いれば、温
度Ｔと流速■を測定することにより、動粘性係数、即ち
粘度を算出することが可能である。）
同時に、判定回路１２では、図示しない走行距離計の出
力を受け、その時の走行距離に対応する粘度、透光量の
データを取り出し第３図に示す透光量・粘度座標上にそ
の点をプロットするとともに（第３図の実線ａ参照）、
現実に検出された透光量と上記算出された粘度との値を
同様に透光量・粘度座標上にプロットする。そして、算
出された粘度が正常時に比べて一定値以上低い場合、即
ち、第３図に斜線を施した領域内に相当する場合には、
オイルが燃料等により希釈されていると判定する。この
場合、前述したアラームランプ１４が点灯するようにな
っている。第３図において、実線ａ（第２図（１）及び
（２）から取り出した点を結んだ線である）は正常な透
光量と粘度の関係を示し、点線すは燃料によるオイルの
希釈がある場合の一例を示す。On the other hand, from the equation of continuity, the mass flow rate is expressed as ρVA at any position within the path. That is, ρVA=to=constant...
・It becomes ■. If the diameters of the paths are equal, then ρV=/
A=to=constant ・・・・・・・・・■Formula■,
From ■, ■, Sea F (T) ・V/k ・・・・・・・
...■. For example, using the above equation 0, it is possible to calculate the kinematic viscosity coefficient, that is, the viscosity, by measuring the temperature T and the flow rate (2). ) At the same time, the determination circuit 12 receives the output from an odometer (not shown), extracts data on viscosity and amount of light transmission corresponding to the distance traveled at that time, and places that point on the amount of light transmission and viscosity coordinate shown in FIG. Along with plotting (see solid line a in Figure 3),
The values of the actually detected light transmission amount and the calculated viscosity are similarly plotted on the light transmission amount/viscosity coordinate. If the calculated viscosity is lower than the normal value by a certain value or more, that is, if it falls within the shaded area in Figure 3,
It is determined that the oil is diluted with fuel or the like. In this case, the above-mentioned alarm lamp 14 is turned on. In Fig. 3, the solid line a (which connects the points taken from Fig. 2 (1) and (2)) shows the normal relationship between the amount of light transmitted and the viscosity, and the dotted line a shows the dilution of oil by the fuel. An example is shown below.
以上のように本実施例によると、判定回路１２が、温度
データと流速データとから粘度を算出し、予め記憶した
正常な（−殻内な）走行距離と透光量との関係を示すデ
ータと、走行距離と粘度との関係を示すデータから、そ
の時の走行距離に対応するデータを取り出し、現実に検
出された透光量及び算出された粘度の値と比較して総合
的にオイルの劣化具合を検出することから、通常のオイ
ル劣化に加えてオイルの粘度の異常低下をも検出するこ
とができ、燃料の吹き抜は等によるオイルの希釈を検出
することができるという利点がある。As described above, according to the present embodiment, the determination circuit 12 calculates the viscosity from the temperature data and the flow velocity data, and uses pre-stored data indicating the relationship between the normal (inside the shell) traveling distance and the amount of light transmitted. Then, from the data showing the relationship between mileage distance and viscosity, data corresponding to the mileage at that time is extracted and compared with the actually detected amount of light transmission and the calculated viscosity value to determine the overall deterioration of the oil. By detecting the condition, it is possible to detect not only normal oil deterioration but also an abnormal decrease in oil viscosity, and there are advantages in that it is possible to detect oil dilution due to fuel blowout, etc.
本発明は、以上のように構成され機能するので、これに
よると、圧力調整手段の作用によりオイル循環経路内の
オイルの流れを低圧に設定することができ、これにより
判定手段が温度センサと流速センサとで得られたデータ
に基づき、オイルの粘度変化を算出することができ、こ
の算出された粘度変化と受光手段で検出された透光量と
により劣化具合を総合的に判断する機能を備えているこ
とから、透光量に対するオイルの粘度の異常低下を検出
することができ、これにより燃料等によるオイルの希釈
化の発生を検出することが出来、オイルの希釈化による
エンジンの異常磨耗等の発生を有効に防止することが出
来るという従来にない優れた内燃機関のオイル不良検知
装置を提供することが出来る。Since the present invention is constructed and functions as described above, the flow of oil in the oil circulation path can be set to a low pressure by the action of the pressure regulating means, and thereby the determining means can detect the temperature sensor and the flow rate. Based on the data obtained by the sensor, it is possible to calculate the change in viscosity of the oil, and it has a function to comprehensively judge the degree of deterioration based on the calculated viscosity change and the amount of transmitted light detected by the light receiving means. Therefore, it is possible to detect an abnormal decrease in the viscosity of oil relative to the amount of transmitted light, and thereby it is possible to detect the occurrence of oil dilution due to fuel, etc., and to detect abnormal engine wear due to oil dilution. It is possible to provide an unprecedented and excellent oil defect detection device for an internal combustion engine that can effectively prevent the occurrence of oil failure.
第１図は本発明の一実施例を示す構成図、第２図は（１
）は通常の走行距離と透光量を示す線図、第２図（２）
は通常の走行距離と粘度との関係を示す線図、第３図は
第１図の実施例の正常状態および粘度異常低下状態にお
ける投光量と粘度の関係を示す図、第４図は従来例を示
す説明図である。
１・・・・・・温度センサ、２・・・・・・流速センサ
としての流量計、６・・・・・・圧力調整手段としての
圧力調整弁、８・・・・・・発光手段としての発光ダイ
オード、９・・・・・・受光手段としてのフォトダイオ
ード、１０・・・・・・エンジン、１０ａ・・・・・・
オイルパン、１１・・・・・・オイル循環経路、１２・
・・・・・判定手段として判定回路、１３・・・・・・
表示手段としてのオイル交換ランプ、１４・・・・・・
表示手段としてのアラームランプ。
特許出願人 鈴木自動車工業株式会社第２図
ｒノ）
第３図FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a (1
) is a diagram showing normal mileage and amount of light transmitted, Figure 2 (2)
is a diagram showing the relationship between normal running distance and viscosity, FIG. 3 is a diagram showing the relationship between the amount of light emitted and viscosity in the normal state and abnormally reduced viscosity state of the embodiment of FIG. 1, and FIG. 4 is a conventional example. FIG. 1... Temperature sensor, 2... Flow meter as flow rate sensor, 6... Pressure regulating valve as pressure regulating means, 8... As light emitting means. light emitting diode, 9... photodiode as light receiving means, 10... engine, 10a...
Oil pan, 11...Oil circulation path, 12.
...Determination circuit as determination means, 13...
Oil change lamp as display means, 14...
Alarm lamp as a means of display. Patent applicant Suzuki Motor Co., Ltd. Figure 2 r) Figure 3
Claims (1)
当該オイルパンに帰還するオイル循環経路を設け、この
オイル循環経路の一部に当該オイル循環経路内のオイル
の圧力を一定に調節する圧力調整手段を介装し、この圧
力調整手段の下流側に温度センサと流速センサを装備し
、前記オイル循環経路に、当該オイル循環経路を介して
一方の側に発光手段を、他方の側に受光手段をそれぞれ
配設し、前記受光手段にて検出される透光量が予め定め
た閾値以下か否かを判定する判定手段と、この判定手段
に併設された表示手段とを備え、前記判定手段が、前記
温度センサと流速センサとで得られたデータに基づき、
オイルの粘度を算出するとともに、この算出された粘度
と前記検出された透光量とによりオイルの不良の可否を
総合的に判断する機能を備えていることを特徴とした内
燃機関のオイル不良検知装置。(1) Starting from the oil pan that forms the bottom of the engine,
An oil circulation path that returns to the oil pan is provided, a pressure adjustment means for adjusting the pressure of the oil in the oil circulation path to a constant is installed in a part of this oil circulation path, and a pressure adjustment means is provided on the downstream side of this pressure adjustment means. Equipped with a temperature sensor and a flow rate sensor, the oil circulation path is provided with a light emitting means on one side and a light receiving means on the other side, and the oil is detected by the light receiving means. The determination means is provided with a determination means for determining whether the amount of transmitted light is below a predetermined threshold value, and a display means attached to the determination means, and the determination means is configured to display data obtained by the temperature sensor and the flow velocity sensor. Based on
Oil defect detection for an internal combustion engine characterized by having a function of calculating the viscosity of the oil and comprehensively determining whether or not the oil is defective based on the calculated viscosity and the detected amount of light transmission. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1862989A JPH02199212A (en) | 1989-01-27 | 1989-01-27 | Oil deterioration detector for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1862989A JPH02199212A (en) | 1989-01-27 | 1989-01-27 | Oil deterioration detector for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02199212A true JPH02199212A (en) | 1990-08-07 |
Family
ID=11976911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1862989A Pending JPH02199212A (en) | 1989-01-27 | 1989-01-27 | Oil deterioration detector for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02199212A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2862087A1 (en) * | 2003-11-10 | 2005-05-13 | Renault Sas | Fuel dilution rate variation estimating method for vehicle, involves estimating variation of fuel dilution rate based on fuel injection phases in chambers, quantity of injected fuel, position of pistons and supply pressure of fuel |
| WO2006005650A1 (en) * | 2004-07-10 | 2006-01-19 | Robert Bosch Gmbh | Method for determining oil dilution in a internal combustion engine featuring post-injection |
| WO2006005649A1 (en) * | 2004-07-10 | 2006-01-19 | Robert Bosch Gmbh | Method for operating an internal combustion engine, and device for carrying out said method |
| JP2006284496A (en) * | 2005-04-04 | 2006-10-19 | Jtekt Corp | Lubricant monitor device |
| EP1798387A2 (en) * | 2005-12-14 | 2007-06-20 | Nissan Motor Co., Ltd. | Diluted oil regeneration in internal combustion engine |
| WO2009051021A2 (en) * | 2007-10-18 | 2009-04-23 | Toyota Jidosha Kabushiki Kaisha | Hydraulic system control device and valve timing control device |
| WO2010094316A1 (en) * | 2009-02-17 | 2010-08-26 | Joachim Vogt | Device for measuring fluid quantity in drives and devices |
| JP2011196220A (en) * | 2010-03-18 | 2011-10-06 | Toyota Motor Corp | Oil abnormality diagnosis device |
-
1989
- 1989-01-27 JP JP1862989A patent/JPH02199212A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005047680A1 (en) * | 2003-11-10 | 2005-05-26 | Renault Sas | Method for controlling the regeneration of a particulate filter |
| FR2862087A1 (en) * | 2003-11-10 | 2005-05-13 | Renault Sas | Fuel dilution rate variation estimating method for vehicle, involves estimating variation of fuel dilution rate based on fuel injection phases in chambers, quantity of injected fuel, position of pistons and supply pressure of fuel |
| US7831373B2 (en) | 2004-07-10 | 2010-11-09 | Robert Bosch Gmbh | Method for operating an internal combustion engine and device for implementing the method |
| WO2006005650A1 (en) * | 2004-07-10 | 2006-01-19 | Robert Bosch Gmbh | Method for determining oil dilution in a internal combustion engine featuring post-injection |
| WO2006005649A1 (en) * | 2004-07-10 | 2006-01-19 | Robert Bosch Gmbh | Method for operating an internal combustion engine, and device for carrying out said method |
| JP2006284496A (en) * | 2005-04-04 | 2006-10-19 | Jtekt Corp | Lubricant monitor device |
| JP4595633B2 (en) * | 2005-04-04 | 2010-12-08 | 株式会社ジェイテクト | Lubricant monitoring device |
| EP1798387A2 (en) * | 2005-12-14 | 2007-06-20 | Nissan Motor Co., Ltd. | Diluted oil regeneration in internal combustion engine |
| EP1798387A3 (en) * | 2005-12-14 | 2010-07-21 | Nissan Motor Co., Ltd. | Diluted oil regeneration in internal combustion engine |
| WO2009051021A2 (en) * | 2007-10-18 | 2009-04-23 | Toyota Jidosha Kabushiki Kaisha | Hydraulic system control device and valve timing control device |
| WO2009051021A3 (en) * | 2007-10-18 | 2009-06-25 | Toyota Motor Co Ltd | Hydraulic system control device and valve timing control device |
| US8272358B2 (en) | 2007-10-18 | 2012-09-25 | Toyota Jidosha Kabushiki Kaisha | Hydraulic system control device and valve timing control device |
| WO2010094316A1 (en) * | 2009-02-17 | 2010-08-26 | Joachim Vogt | Device for measuring fluid quantity in drives and devices |
| JP2011196220A (en) * | 2010-03-18 | 2011-10-06 | Toyota Motor Corp | Oil abnormality diagnosis device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4306525A (en) | Engine oil indicator | |
| JPH09228817A (en) | Detection method for liquid quantity, in particular engine oil quantity in automobile | |
| JPH02199212A (en) | Oil deterioration detector for internal combustion engine | |
| JP2010501768A (en) | Method for monitoring the state of engine oil in an internal combustion engine | |
| CN100545437C (en) | Engine fire decision maker and misfire determining method thereof | |
| CN114320525A (en) | Engine oil quantity monitoring method and device, electronic equipment and storage medium | |
| JPH0634541A (en) | Monitoring apparatus of degradation of lubricating oil | |
| US6318332B1 (en) | Method for monitoring adequate oil lubrication of an internal combustion engine and an internal combustion engine for carrying out the method | |
| US5019800A (en) | System for measuring the oil level of an oil pan of the crankcase of an internal combustion engine | |
| JP3205173B2 (en) | Lubricating oil consumption measurement device for internal combustion engines | |
| US11208925B2 (en) | Diagnostic system for a lubrication circuit | |
| KR101166512B1 (en) | smoke test having perceivealbe that sampling probe was removed from exhaust pipe | |
| JPH0419312A (en) | Flow detecting device and detecting method engine blowby gas | |
| KR200462522Y1 (en) | PCO non-flow monitoring for main engine | |
| KR20090021802A (en) | A engine oil measuring apparatus for a vehicle and the measuring method thereof | |
| CN110594020B (en) | Reason diagnostic system of crankcase high pressure | |
| JP3248327B2 (en) | Engine oil deterioration determination device | |
| KR100758037B1 (en) | Digital fuel efficiency display device and thereof | |
| JP2005106017A (en) | Oil mist concentration detection device | |
| JPH0681623A (en) | Cylinder lubricating system | |
| KR200152946Y1 (en) | Oil exchange opportunity measuring device of a car | |
| JPH0282139A (en) | Oil deterioration detector | |
| CN214533231U (en) | Engine monitoring device | |
| KR100412807B1 (en) | Oil-level indicator of engine for automobile | |
| US10914221B2 (en) | Method and device for emission monitoring of a combustion engine in a motor vehicle |