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WO1992019848A1 - Oil degradation measuring apparatus - Google Patents

Oil degradation measuring apparatus Download PDF

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Publication number
WO1992019848A1
WO1992019848A1 PCT/JP1992/000532 JP9200532W WO9219848A1 WO 1992019848 A1 WO1992019848 A1 WO 1992019848A1 JP 9200532 W JP9200532 W JP 9200532W WO 9219848 A1 WO9219848 A1 WO 9219848A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
sensor
pair
acid value
insoluble
Prior art date
Application number
PCT/JP1992/000532
Other languages
French (fr)
Japanese (ja)
Inventor
Kunihiro Yamasaki
Ikuo Uchino
Akira Mori
Atsuhiko Hirosawa
Original Assignee
Kabushiki Kaisha Komatsu Seisakusho
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kabushiki Kaisha Komatsu Seisakusho filed Critical Kabushiki Kaisha Komatsu Seisakusho
Publication of WO1992019848A1 publication Critical patent/WO1992019848A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; Viscous liquids; Paints; Inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Specific substances contained in the oils or fuels
    • G01N33/2876—Total acid number
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2260/00—Fail safe
    • F16N2260/02—Indicating
    • F16N2260/18—Indicating necessity of changing oil

Definitions

  • the present invention relates to an oil deterioration measuring device for easily measuring pollution and oxidative deterioration of an oil used for an engine or a hydraulic device and measuring the degree of deterioration.
  • the deterioration of the oil is determined by the amount of foreign matter that is mixed in from the outside of the soot generated by combustion (this is referred to as pen-insoluble matter) and the amount of oil in the oil. It is represented by oxidative degradation, which is the deterioration of the substance (this is an increase in total acid value, strong acid value and a decrease in additives).
  • a foil is interposed between the light emitting part and the light receiving part, and the wavelength from the light emitting part is about 600 mm.
  • the deterioration of the oil is measured based on the transmittance when the K light passes through the oil and is received by the light receiving part.
  • the former detects oil pollution from changes in light transmittance, so this is not the case.
  • the indicated value changes depending on the type and amount of the deteriorating component contained in the oil ⁇ , which captures part of the deteriorating phenomenon of _ —
  • the present invention has been made in view of the above-described circumstances, and it has been found that contamination of oil is attenuated by light transmission attenuation, while oxidative degradation is caused by a potential at which a heterogeneous electrode pair is generated.
  • the purpose of the present invention is to provide an oil deterioration measuring instrument capable of easily detecting oil contamination and oxidative deterioration. .
  • an oil deterioration measuring device comprising an insoluble component sensor and a total acid value sensor. Provided.
  • the oil deterioration measuring instrument a light emitter is placed on one back of a pair of transparent plates facing each other with a slight gap, and a light receiver is placed on the other back.
  • the insoluble component sensor is constituted, and further, the total acid value sensor is spaced apart from the vicinity of the insoluble component sensor.
  • the operation of the oil deterioration measuring instrument of the present invention having the above-described embodiment, which is constituted by a pair of different kinds of electrode forces mounted in such a manner as described above, is as follows. . That is, the contamination of the oil can be measured with the insoluble component sensor, and the oxidative deterioration of the oil can be measured with the total acid value sensor. These measurements are also performed with a single measuring instrument.
  • a total acid value sensor composed of different kinds of electrodes is formed near the optical path of the insoluble component sensor, and both sensors are formed in a compact.
  • the oil deterioration measuring device of the present invention since the insoluble component sensor and the total acid value sensor are provided, only one oil deterioration measuring device can be used. It is very convenient to measure both the concentration of the insoluble matter in the oil to be measured and the total acid value.
  • the sensor part of the above-mentioned oil deterioration measuring instrument is placed on one back of a pair of transparent plates opposed to each other with a slight gap, and 5 3 ⁇ 4 of light on the back of the other, and on the other back.
  • An insoluble dissolution sensor is constructed by arranging the receivers respectively, and a pair of electrodes is attached near the insoluble sensor and separated from each other.
  • FIG. 1 is a circuit diagram showing a specific example of the present invention.
  • FIG. 2 is a schematic structural explanatory view showing an embodiment of the sensor unit.
  • Fig. 3 is a diagram showing the relationship between the level display and the n-pentane-insoluble content in an analogous manner.
  • Fig. 4 is a diagram showing the relationship between the level meter display and the total acid value in an analogous manner.
  • Figure 5 is a digital diagram showing the relationship between the level meter display and the n-pentyne-insoluble content
  • FIG. 6 is a digital diagram showing the relationship between the level meter display and the total acid value.
  • reference numeral 1 denotes an insoluble component sensor 2 and a total acid value sensor, which are close to each other with a measuring instrument (not shown). Is held.
  • the insoluble component sensor 1 includes a light emitting device 3 made of ED and a light receiving device 4 such as a photo diode or a photo transistor in a range of 0.1 to 0.1. It is constructed by opposing each other at a distance of 0.05 mm, preferably 0.07 mm, and the total acid value sensor 2 is
  • the electrodes are composed of electrodes that form a pair of different metals, such as an Ag electrode 5 and an Ir electrode 6.
  • the light emitting device 3 of the insoluble component sensor 1 is configured by an ED, and the light emitting device 3 is connected to an oscillation circuit 8 via an LED driving circuit 7. .
  • the photodetector 4 is composed of a photo diode.
  • the photodetector 4 has an amplifier 9, a bandpass filter 10 and a comparison circuit.
  • a leveler circuit 14 is connected via 11, a smoothing circuit 12, and a zero adjusting circuit 13.
  • both electrodes 5 and 6 of the metal electrode are connected to a high-resistance input differential amplifier 15 ⁇ through a low-pass fin- olator 16 and a zero adjustment circuit 17 to obtain the above-mentioned level.
  • a midpoint generating circuit 18 is connected to the high-resistance input differential amplifier 15 and the low-pass filter 16.
  • the above level control-Evening circuit 14 has a display 19 connected to it
  • the insoluble component sensor 1 for example, light is transmitted between the light-emitting device 3 and the light-receiving device 4 whose facing distance is fixed to 0.07 ran.
  • the transmitted light is received by the light receiver 4 and the amount of received light is converted into an electric signal.
  • the amount of received light varies depending on the amount of oil contamination. Therefore, the correlation between the electrical output of the photodiode, which varies with the amount of light, and the amount of pollution (the amount of pentane-insoluble dissolution) has been obtained in advance. Displayed on display 19 based on the relationship.
  • Fig. 2 shows an example of the structure of the sensor part of the oil deterioration measuring device. ⁇ a
  • reference numerals 20 and 21 denote holding plates which are opposed to each other with a slight gap therebetween, and these two holding plates 20 and 21 are respectively provided.
  • Transparent plates 2 2, 2 3 Force ⁇ 0.07 ram facing each other with an opposing gap, one of these transparent plates 2 2, 2 3
  • a light-emitting device 3 is mounted on the back of 22 and a light-receiving surface 4 is mounted on the back of the other transparent plate 23 so as to face each other.
  • Sensor 1 is configured.
  • a ring-shaped Ag electrode 5 and an Ir electrode 6 are mounted on the opposing surfaces of the transparent plates 22 and 23, respectively. These electrodes 5 and 6 are respectively provided.
  • the central portion is formed as the optical path of the insoluble component sensor 1.
  • the detection target is dropped between the transparent plates 22 and 23 to reduce the amount of light transmitted between the transparent plates 22 and 23 from the amount of light transmitted therethrough.
  • Pentane insolubles in the oil were detected and the total acid value could be determined from the potential difference between the electrodes 5 and 6 O o
  • FIGS. 3 to 6 show the relationship between the indication on the indicator 19 and the insoluble matter concentration or the total acid value.
  • Figs. 3 and 4 show the analog display
  • Fig. 3 shows the relationship between the level meter display and the n-pentane insoluble matter
  • Fig. 4 shows the level.
  • the graphs show the relationship between the display and the total acid value, respectively.
  • Fig. 5 and Fig. 6 show the digital display, respectively. Similar to the above, it is a graph showing the relationship between the level meter display and n-pentane insoluble matter or total acid value.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

An oil degradation measuring apparatus capable of measuring a concentration of insoluble contents in an oil and a total acid value. This apparatus comprises an insoluble component sensor (1) for measuring contamination of the oil and a total acid value sensor (2) for measuring oxidation degradation of the oil. The insoluble component sensor (1) comprises a pair of transparent plates (22, 23) so disposed as to face each other with a slight gap between them, a light emitting device (3) disposed on the back of one of the plate, and a light receiving device (4) disposed on the back of the other plate. The total acid value sensor (2) comprises a pair of separate electrodes (5, 6) made of mutually different materials and located in the proximity of the insoluble component sensor (1).

Description

明 細  Details
ォ ィ ル 劣 化 測 定  Foil degradation measurement
発明 の技術分野  TECHNICAL FIELD OF THE INVENTION
本発明 は 、 ェ ン ジ ン ゃ油圧機器等 に 用 い ら れ る オ イ ル の 汚濁及 び酸化劣化を 簡便 に 測定 し て そ の 劣化度 合を 測 定す る オ イ ル劣化測定器 に 関す る も の で め る o  The present invention relates to an oil deterioration measuring device for easily measuring pollution and oxidative deterioration of an oil used for an engine or a hydraulic device and measuring the degree of deterioration. O
発 明 の背景技  Background of the Invention
一般 に 、 オ イ ノレの 劣化 は燃焼 に よ っ て生 じ る ス ス ゃ外 部か ら 混入す る 異物の量 （ こ れを ペ ン 夕 ン 不溶解分 と い う ） と オ イ ルそ の も の の 劣化で あ る 酸化劣化 （ こ れ は 全 酸価、 強酸価の上昇及 び添加剤の減少） で表わ さ れ る 。  In general, the deterioration of the oil is determined by the amount of foreign matter that is mixed in from the outside of the soot generated by combustion (this is referred to as pen-insoluble matter) and the amount of oil in the oil. It is represented by oxidative degradation, which is the deterioration of the substance (this is an increase in total acid value, strong acid value and a decrease in additives).
従来の こ の 種の ォ ィ ル劣化測定手段 と し て は 、 特開昭 As a conventional means for measuring this kind of foul deterioration, Japanese Patent Laid-Open No.
6 1 - 1 3 5 9 1 3 号公報 に 示 さ れて い る よ う に 、 発光 部 と 受光部の 間 に ォ ィ ルを介在 さ せ、 発光部か ら の 波長 が約 6 0 0 mm よ り ： K い 光がオ イ ルを通過 し て 受光部 よ り 受光 さ れ る 際の 透過率 に基づ い て オ イ ルの 劣化を 測定す る よ う に し た も の が め る o As shown in JP-A-6-135991, a foil is interposed between the light emitting part and the light receiving part, and the wavelength from the light emitting part is about 600 mm. Than: The deterioration of the oil is measured based on the transmittance when the K light passes through the oil and is received by the light receiving part. o
ま たオ イ ルの 誘電率を 測定 し 、 こ の誘電率 の 変化力、 ら オ イ ルの 劣化度 合を 測定す る よ う に し た手段 も 知 ら れて い る 。  It is also known to measure the permittivity of the oil, and to measure the changing power of the permittivity and the degree of deterioration of the oil.
上記従来の 技術の う ち 、 前者の も の に あ っ て は光の 透 過率の 変化か ら オ イ ル の 汚濁度 を検 出 し て い る も の で、 こ れで は ォ ィ ル の 劣化現象の一部 を と ら え て い る た オ イ ル Φ に 含 ま れ る 劣化成分の 種類 と 量 に よ っ て 指示値が変 _ — Of the above conventional technologies, the former detects oil pollution from changes in light transmittance, so this is not the case. The indicated value changes depending on the type and amount of the deteriorating component contained in the oil Φ, which captures part of the deteriorating phenomenon of _ —
化す る と い う 問題があ っ た。 There was the problem of becoming
発明の 概要  Summary of the Invention
本発明 は上記 し た事情 に鑑み て な さ れた も の で あ っ て オ イ ルの汚濁 を光の透過減衰で、 一方 ま た酸化劣化を異 種電極対に発生す る 電位でそ れぞれ検 出 し 、 オ イ ルの 汚 濁 と 酸化劣化を容易 に測定す る こ と がで き る オ イ ル劣化 測定器を提供す る こ と を 目 的 と す る も の で あ る 。  The present invention has been made in view of the above-described circumstances, and it has been found that contamination of oil is attenuated by light transmission attenuation, while oxidative degradation is caused by a potential at which a heterogeneous electrode pair is generated. The purpose of the present invention is to provide an oil deterioration measuring instrument capable of easily detecting oil contamination and oxidative deterioration. .
上記 目 的 を達成す る た め に 、 本発明 の主な る 態様 に よ れば、 不溶解分セ ン サ と 全酸価セ ン サ と か ら 構成 さ れた オ イ ル劣化測定器が提供 さ れ る 。  In order to achieve the above object, according to a main aspect of the present invention, there is provided an oil deterioration measuring device comprising an insoluble component sensor and a total acid value sensor. Provided.
ま た上記オ イ ル劣化測定器 に お い て、 わ ずかな 隙間 を あ けて互い に対設 し た一対の透明板の一方の背面に発光 器を、 他方の背面に受光器を そ れぞれ配設す る こ と に よ つ て前記不溶解分セ ン サ が構成 さ れ、 さ ら に 前記全酸価 セ ン サが前記不溶解分セ ン サ の近傍 に互 い に離間す る よ う に取付 け ら れた一対の異種の電極力、 ら 構成 さ れて い る 上記 し た態様 を有す る 本発明の オ イ ル劣化測定器の 作 用 は次の通 り で あ る 。 す な わ ち 、 不溶解分セ ン サ に てォ ィ ルの 汚蘅度が、 ま た全酸価セ ン サ に てオ イ ルの 酸化劣 化がそ れぞれ測定で き 、 し か も こ れ ら の 測定を 1 つ の 測 定器 に て行な わ れ る 。  Also, in the above-mentioned oil deterioration measuring instrument, a light emitter is placed on one back of a pair of transparent plates facing each other with a slight gap, and a light receiver is placed on the other back. By disposing them, the insoluble component sensor is constituted, and further, the total acid value sensor is spaced apart from the vicinity of the insoluble component sensor. The operation of the oil deterioration measuring instrument of the present invention having the above-described embodiment, which is constituted by a pair of different kinds of electrode forces mounted in such a manner as described above, is as follows. . That is, the contamination of the oil can be measured with the insoluble component sensor, and the oxidative deterioration of the oil can be measured with the total acid value sensor. These measurements are also performed with a single measuring instrument.
ま た不溶解分セ ン サ の光路の 近傍 に異種電極か ら な る 全酸価セ ン サ が構成 さ れ、 両セ ン サ は コ ン パ ク 卜 に 構成 さ れ る 。 本発明 の オ イ ル劣化測定器 に よ れ ば、 不溶解分セ ン サ と 全酸価 セ ン サ と を 設 け た こ と に よ り 、 1 つ の ォ ィ ル劣 化測定器 に て被測定オ イ ル中 の 不溶解分の 濃度 と 、 全酸 価の双方を 測定す る こ と がで ぎて非常 に 便利で あ る 。 In addition, a total acid value sensor composed of different kinds of electrodes is formed near the optical path of the insoluble component sensor, and both sensors are formed in a compact. According to the oil deterioration measuring device of the present invention, since the insoluble component sensor and the total acid value sensor are provided, only one oil deterioration measuring device can be used. It is very convenient to measure both the concentration of the insoluble matter in the oil to be measured and the total acid value.
ま た上記オ イ ル劣化測定器の セ ン サ部を、 わずか な 隙 間を あ け て互 い に 対設 し た一対の透明板の一方の背面 に 9¾光 5§を 、 他方の背面 に 受光器 を そ れぞれ配設 し て不溶 解分セ ン サ を構成 し 、 さ ら に こ の 不溶解分セ ン サ の 近傍 に互 い に 離間す る 状態で一対の 電極を取付 け て全酸価 セ ン サ を構成 し た こ と に よ り 、 不溶解分セ ン サ と 全酸価 セ ン サ と を コ ンパ ク ト な 形状 に ま と め る こ と がで き る o 前記な ら び に 他の本発明 の 目 的 、 態様、 そ し て利点 は 本発明の 原理 に 合致す る 好適 な 具体例が実施例 と し て示 さ れて い る 以下の記述 お よ び添附の 図面 に 関連 し て説明 さ れ る こ と に よ り 、 当該技 WJの 熟達者 に と っ て 明 ら 力、 に な る で あ ろ う 。  In addition, the sensor part of the above-mentioned oil deterioration measuring instrument is placed on one back of a pair of transparent plates opposed to each other with a slight gap, and 5 ¾ of light on the back of the other, and on the other back. An insoluble dissolution sensor is constructed by arranging the receivers respectively, and a pair of electrodes is attached near the insoluble sensor and separated from each other. By configuring the total acid value sensor, the insoluble sensor and the total acid value sensor can be combined into a compact shape.o Other objects, embodiments, and advantages of the present invention are described in the following description and examples, where preferred embodiments are shown as examples that are consistent with the principles of the present invention. The explanations made in connection with the drawings of the above will make it clear to the expert of the technique WJ.
図面の 簡単 な 説明  Brief description of the drawings
図 1 は本発明 の 具体例 を 示す 回路 図で あ り 、  FIG. 1 is a circuit diagram showing a specific example of the present invention.
図 2 は セ ン サ部の 実施例 を 示す概略的 な 構成説明 図 で あ り 、  FIG. 2 is a schematic structural explanatory view showing an embodiment of the sensor unit.
図 3 は レ ベ ル メ 一 夕 表示 と n —ペ ン タ ン 不溶解分 と の 関係を ア ナ ロ グ的 に 示す線図 で あ り 、  Fig. 3 is a diagram showing the relationship between the level display and the n-pentane-insoluble content in an analogous manner.
図 4 は レ ベ ル メ 一 タ 表示 と 全酸価 と の 関係 を ア ナ ロ グ 的 に 示す線図で あ り 、 , Fig. 4 is a diagram showing the relationship between the level meter display and the total acid value in an analogous manner. ,
— 4 —  - Four -
図 5 は レベル メ ー タ 表示 と n — ペ ン 夕 ン不溶解分 と の 関係を デ ジ タ ル的 に示す線図であ り 、 そ し て Figure 5 is a digital diagram showing the relationship between the level meter display and the n-pentyne-insoluble content, and
図 6 は レベル メ 一 夕 表示 と 全酸価 と の 関係を デ ジ タ ル 的 に示す線図であ る 。  FIG. 6 is a digital diagram showing the relationship between the level meter display and the total acid value.
好 ま し い具体例の詳細な 説明  Detailed description of preferred examples
以下に本発明の好ま し い具体例が添付の 図面 に 関連 し て詳細 に説明 さ れ る 。  In the following preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
図 1 及 び図 2 に お い て 、 参照数字 1 は不溶解分セ ン サ 2 は全酸価セ ン サであ り 、 こ れ ら は図示 し な い測定器本 体に互い に近接 し て保持 さ れて い る 。  In FIGS. 1 and 2, reference numeral 1 denotes an insoluble component sensor 2 and a total acid value sensor, which are close to each other with a measuring instrument (not shown). Is held.
上記不溶解分セ ン サ 1 は E D か ら な る 発光器 3 と 、 フ ォ ト ダイ オ ー ドあ る い は フ ォ ト ト ラ ン ジ ス タ 等の 受光 器 4 と を 0 . 1 〜 0 . 0 5 mm好 ま し く は 0 . 0 7 讓 の 間 隔 あ け て互い に対向 さ せ る こ と に よ っ て構成 さ れて い る ， ま た全酸価セ ン サ 2 は 例 え ば A g 電極 5 と I r 電極 6 と の よ う に互に異種金属 の一対 と な る 電極か ら 構成 さ れ て い る 。  The insoluble component sensor 1 includes a light emitting device 3 made of ED and a light receiving device 4 such as a photo diode or a photo transistor in a range of 0.1 to 0.1. It is constructed by opposing each other at a distance of 0.05 mm, preferably 0.07 mm, and the total acid value sensor 2 is For example, the electrodes are composed of electrodes that form a pair of different metals, such as an Ag electrode 5 and an Ir electrode 6.
上記不溶解分セ ン サ 1 の 発光器 3 は E D に よ っ て構 成 さ れて お り 、 こ の 発光器 3 に は L E D 駆動回路 7 を介 し て発振回路 8 が接続 さ れて い る 。 ま た受光器 4 は フ ォ ト ダイ オ ー ド に よ っ て構成 さ れて お り 、 こ の 受光器 4 に は ア ン プ 9 、 バ ン ドパ ス フ ィ ル タ 1 0 、 比較回路 1 1 、 平滑回路 1 2 、 ゼ ロ 調整回路 1 3 を介 し て レ ベ ル メ 一 夕 回路 1 4 が接続 さ れて い る 。 —方、 金属電極の両電極 5 ， 6 は高抵抗入力差動 ア ン プ 1 5 ヽ ロ ー バ ス フ イ ノレ タ 1 6 、 ゼ ロ 調整回路 1 7 を 介 し て上記 レ ベ ル メ ー タ 回路 1 4 に 接続 さ れて い る 。 ま た 上記高抵抗入力差動 ア ン プ 1 5 と ロ ー パ ス フ ィ ル タ 1 6 と に 中点発生回路 1 8 が接続 さ れて い る 。 The light emitting device 3 of the insoluble component sensor 1 is configured by an ED, and the light emitting device 3 is connected to an oscillation circuit 8 via an LED driving circuit 7. . The photodetector 4 is composed of a photo diode. The photodetector 4 has an amplifier 9, a bandpass filter 10 and a comparison circuit. A leveler circuit 14 is connected via 11, a smoothing circuit 12, and a zero adjusting circuit 13. On the other hand, both electrodes 5 and 6 of the metal electrode are connected to a high-resistance input differential amplifier 15 ヽ through a low-pass fin- olator 16 and a zero adjustment circuit 17 to obtain the above-mentioned level. Connected to the data circuit 14. Further, a midpoint generating circuit 18 is connected to the high-resistance input differential amplifier 15 and the low-pass filter 16.
上記 レ べ ノレ メ — 夕 回路 1 4 に は表示器 1 9 が接続 さ れ て い る  The above level control-Evening circuit 14 has a display 19 connected to it
上記 し た構成 に お い て、 測定時 に は、 そ れ ぞれの セ ン サ 1 , 2 に 被測定オ イ ルが滴下 さ れ る 。  In the configuration described above, at the time of measurement, the oil to be measured is dropped on the respective sensors 1 and 2.
そ し て不溶解分セ ン サ 1 で は、 例 え ば対向 間隔が 0. 0 7 ran. に 固定 さ れて い る 発光器 3 と 受光器 4 の 間で光が透過 さ れ、 そ の透過光が受光器 4 に よ っ て受光 さ れて こ の 受 光量が電気信号 に 変換 さ れ る 。 そ し て こ の 受光量 は オ イ ル の 汚濁量 に 応 じ て変 わ る 。 従 っ て光量 に よ っ て変化す る フ ォ ト ダ ィ ォ ー ド の 電気出力 と 汚濁量 （ ペ ン タ ン 不溶 解分量 ) は あ ら か じ め相関関係 を得て お き 、 こ の 関係 に 基づ い て表示器 1 9 で表示 さ れ る 。  In the insoluble component sensor 1, for example, light is transmitted between the light-emitting device 3 and the light-receiving device 4 whose facing distance is fixed to 0.07 ran. The transmitted light is received by the light receiver 4 and the amount of received light is converted into an electric signal. The amount of received light varies depending on the amount of oil contamination. Therefore, the correlation between the electrical output of the photodiode, which varies with the amount of light, and the amount of pollution (the amount of pentane-insoluble dissolution) has been obtained in advance. Displayed on display 19 based on the relationship.
一方、 全酸価セ ン サ 2 で は両電極 5 ， 6 が上記オ イ ル に浸漬 さ れ た こ と に よ り 、 こ の 両電極 5 , 6 間 に 電位差 が生 じ 、 こ の 電位差が こ れ に接続 し た検 出 回路 に て ィ ン ピ一ダ ン ス 変換及 び電圧増幅 さ れて測定可能 な 電気信号 と な り 、 こ れが表示器 1 9 に て表示 さ れ る 。  On the other hand, in the total acid value sensor 2, since the electrodes 5 and 6 were immersed in the above-described oil, a potential difference was generated between the electrodes 5 and 6, and the potential difference was reduced. The detection circuit connected to this is subjected to impedance conversion and voltage amplification to become a measurable electric signal, which is displayed on the display 19.
図 · 2 に は オ イ ル劣化測定器 の セ ン サ 部の 構造の 一例 が 示 さ れ る ο a Fig. 2 shows an example of the structure of the sensor part of the oil deterioration measuring device.ο a
― b ―  ― B ―
同図中参照数字 2 0 , 2 1 は互い に わずかな 隙間を あ け て対設 さ せ ら れた保持板であ り 、 こ の両保持板 2 0 , 2 1 の そ れぞれに は透明板 2 2 , 2 3 力《 0 . 0 7 ramの対 向隙間を あ け て互い に対向 し て設 け ら れて お り 、 こ の 各 透明板 2 2 , 2 3 の一方の透明板 2 2 の背面に発光器 3 が、 ま た他方の透明板 2 3 の背面 に受光面 4 がそ れぞれ 互い に対向 し て取付け ら れてお り 、 こ れ ら に て不溶解分 セ ン サ 1 が構成 さ れて い る 。 In the figure, reference numerals 20 and 21 denote holding plates which are opposed to each other with a slight gap therebetween, and these two holding plates 20 and 21 are respectively provided. Transparent plates 2 2, 2 3 Force << 0.07 ram facing each other with an opposing gap, one of these transparent plates 2 2, 2 3 A light-emitting device 3 is mounted on the back of 22 and a light-receiving surface 4 is mounted on the back of the other transparent plate 23 so as to face each other. Sensor 1 is configured.
上記両透明板 2 2 ， 2 3 の対向面部に は リ ン グ状の A g 電極 5 と I r 電極 6 と が取付 け て あ り 、 こ れ ら の 電 極 5 ， 6 の そ れぞれの 中央部が上記不溶解分セ ン サ 1 の 光路部 と し て構成さ れて い る 。  A ring-shaped Ag electrode 5 and an Ir electrode 6 are mounted on the opposing surfaces of the transparent plates 22 and 23, respectively. These electrodes 5 and 6 are respectively provided. The central portion is formed as the optical path of the insoluble component sensor 1.
こ の構成に お い て、 透明板 2 2 , 2 3 の 間 に被検出 ォ イ ノレを滴下す る こ と に よ っ て、 透明板 2 2 , 2 3 間を透 過す る 光量か ら オ イ ル中の ペ ン タ ン不溶解分が検 出 さ れ ま た両電極 5 , 6 間の電位差か ら 全酸価を知 る こ と がで さ O o  In this configuration, the detection target is dropped between the transparent plates 22 and 23 to reduce the amount of light transmitted between the transparent plates 22 and 23 from the amount of light transmitted therethrough. Pentane insolubles in the oil were detected and the total acid value could be determined from the potential difference between the electrodes 5 and 6 O o
図 3 か ら 図 6 に は表示器 1 9 の表示 と 不溶解分濃度又 は全酸価 と の 関係が示 さ れ る 。  FIGS. 3 to 6 show the relationship between the indication on the indicator 19 and the insoluble matter concentration or the total acid value.
す な わ ち 、 図 3 , 4 は ア ナ ロ グ表示の も の で、 図 3 は レベル メ 一 タ 表示 と n — ペ ン タ ン不溶解分 と の 関係 を 、 ま た図 4 は レ ベル メ 一 夕 表示 と 全酸価 と の 関係を そ れぞ れ示'す グ ラ フ で あ る 。  In other words, Figs. 3 and 4 show the analog display, Fig. 3 shows the relationship between the level meter display and the n-pentane insoluble matter, and Fig. 4 shows the level. The graphs show the relationship between the display and the total acid value, respectively.
ま た図 5 、 図 6 は デ ジ タ ル表示の も の で、 そ れぞれ上 記 と 同様 に レ ベル メ 一 夕 表示 と n — ペ ン タ ン 不溶解分又 は全酸価 と の 関係 を示す グ ラ フ で あ る 。 Fig. 5 and Fig. 6 show the digital display, respectively. Similar to the above, it is a graph showing the relationship between the level meter display and n-pentane insoluble matter or total acid value.

Claims

請求の範囲 The scope of the claims
1 . オ イ ルの污濁度を 測定す る 不溶解分セ ン サ と 、 オ イ ルの酸化劣化を測定す る 全酸価セ ン サ と か ら 成 る オ イ ル 劣化測定器。  1. An oil degradation measuring instrument consisting of an insoluble sensor that measures the turbidity of oil and a total acid value sensor that measures the oxidative degradation of the oil.
2 . 第 1 請求項記載の オ イ ル劣化測定器で あ っ て、 前記 不溶解分セ ンサが、 わずかな 隙間を.あ け て互 い に対設 さ れた一対の透明板 と 、 そ の一方の背面に 配設 さ れた発光 器 と 、 そ し て他方の 背面に配設 さ れた受光器 と か ら 成 る こ と を特徵 と す る オ イ ル劣化測定器。  2. The oil deterioration measuring device according to claim 1, wherein the insoluble sensor comprises a pair of transparent plates opposed to each other with a slight gap therebetween. An oil deterioration measuring device characterized by comprising a light emitting device arranged on one back surface of a light emitting device and a light receiving device arranged on the other back surface of the light emitting device.
3 . 第 1 請求項記載の オ イ ル劣化測定器で あ っ て、 前記 全酸俪セ ン サが、 前記不溶解分セ ン サの近傍 に互 い に離 間す る 状態で取付け ら れた そ れぞれ異種材料の一対の電 極か ら 成る こ と を特徴 と す る オ イ ル劣化測定器。  3. The oil deterioration measuring instrument according to claim 1, wherein the total oxygen sensor is attached to the insoluble component sensor in a state where they are spaced apart from each other. An oil degradation measuring device characterized by a pair of electrodes made of different materials.
4 . 第 2 請求項記載の オ イ ル劣化測定器であ っ て、 前記 一対の透明板の 間の 隙間が 0 . 1 〜 0 . 0 5 mmであ る こ と を特徴 と す る オ イ ル劣化測定器。  4. The oil deterioration measuring device according to claim 2, wherein a gap between the pair of transparent plates is 0.1 to 0.05 mm. Degradation meter.
5 . 第 2 請求項記載の オ イ ル劣化測定器で あ っ て、 前記 一対の透明板の 間の 隙間が好 ま し く は 0 . 0 7 咖で あ る こ と を特徴 と す る オ イ ル劣化測定器。  5. The oil deterioration measuring device according to claim 2, wherein a gap between the pair of transparent plates is preferably 0.07 mm. Oil degradation measuring instrument.
6 . 第 3 請求項記載の オ イ ル劣化測定器で あ っ て、 前記 一対の電極の一方が リ ン グ状の A g 電極で あ り 、 他方が リ ン状の I r 電極であ り 、 こ れ ら の電極が前記一対の透 明板の 対向面部 に そ れぞれ取付け ら れて い る こ と を特徴 と す る オ イ ル劣化測定器。  6. The oil deterioration measuring device according to claim 3, wherein one of the pair of electrodes is a ring-shaped Ag electrode and the other is a ring-shaped Ir electrode. An oil deterioration measuring instrument characterized in that these electrodes are respectively mounted on the opposing surfaces of the pair of transparent plates.
PCT/JP1992/000532 1991-04-25 1992-04-23 Oil degradation measuring apparatus WO1992019848A1 (en)

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JP1991037749U JP2560294Y2 (en) 1991-04-25 1991-04-25 Oil deterioration measuring instrument
JP3/37749U 1991-04-25

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