JPH05215675A - Measuring instrument for deterioration of lubrication oil - Google Patents
Measuring instrument for deterioration of lubrication oilInfo
- Publication number
- JPH05215675A JPH05215675A JP1996592A JP1996592A JPH05215675A JP H05215675 A JPH05215675 A JP H05215675A JP 1996592 A JP1996592 A JP 1996592A JP 1996592 A JP1996592 A JP 1996592A JP H05215675 A JPH05215675 A JP H05215675A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil
- light
- deterioration
- section
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、潤滑油劣化度測定装置
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil deterioration degree measuring device.
【０００２】[0002]
【従来の技術】従来、近赤外線の領域のレーザ光を発生
するレーザダイオードと、同レーザ光の波長をコントロ
ールする温度コントローラと、同レーザ光を供試潤滑油
に照射する照射手段と、上記供試潤滑油からの反射光ま
たは透過光を受光して電流に変換する受光素子と、同受
光素子から出力される信号に基づいて油の濃度を演算す
る濃度演算部とを具えた潤滑油劣化度測定装置は、公知
である（必要ならば特願平２ー１９２４５３号明細書を
参照されたい）。2. Description of the Related Art Conventionally, a laser diode for generating a laser beam in the near infrared region, a temperature controller for controlling the wavelength of the laser beam, an irradiation means for irradiating the lubricating oil with the laser beam, and the above-mentioned Deterioration degree of lubricating oil, which includes a light receiving element that receives the reflected light or transmitted light from the trial lubricating oil and converts it into an electric current, and a concentration calculator that calculates the oil concentration based on the signal output from the light receiving element Measuring devices are known (see Japanese Patent Application No. 2-192453 if necessary).
【０００３】上記潤滑油劣化度測定装置では、レーザダ
イオードからの近赤外線領域のレーザ光を供試潤滑油に
照射して、同供試潤滑油を透過する透過光を受光素子で
受けて、電流に変換し、プリアンプ等により増幅して、
濃度演算処理部へ送り、ここで潤滑油の濃度を算出す
る。上記レーザ光の波長は、温度コントローラによりコ
ントロールする。In the above lubricating oil deterioration measuring device, the test lubricating oil is irradiated with the laser light in the near infrared region from the laser diode, the transmitted light passing through the lubricating oil under test is received by the light receiving element, and the current is measured. Converted to, amplified by a preamplifier, etc.,
The concentration is sent to the concentration calculation processing unit, where the concentration of the lubricating oil is calculated. The wavelength of the laser light is controlled by a temperature controller.
【０００４】上記潤滑油劣化度測定装置を図５、図６に
より具体的に説明すると、図５の１がディーゼルエンジ
ン、２が潤滑油ポンプ、３が潤滑油ライン、４が潤滑油
冷却器、５が冷却器出口ライン、６が温調弁、７が潤滑
油主こし器、８、１０が主こし器出口ライン、９が油性
状オンライン分析計、１１が逆洗油こし器、１２が潤滑
油サンプタンク、１３が清浄機供給ライン、１４が潤滑
油清浄機、１５が清浄機戻りライン、１６がサンプタン
ク供給ラインである。The lubricating oil deterioration measuring device will be described in detail with reference to FIGS. 5 and 6. In FIG. 5, 1 is a diesel engine, 2 is a lubricating oil pump, 3 is a lubricating oil line, 4 is a lubricating oil cooler, 5 is a cooler outlet line, 6 is a temperature control valve, 7 is a lubricating oil main strainer, 8 and 10 are main strainer outlet lines, 9 is an oil property online analyzer, 11 is a backwash oil strainer, and 12 is lubrication An oil sump tank, 13 is a purifier supply line, 14 is a lubricating oil purifier, 15 is a purifier return line, and 16 is a sump tank supply line.
【０００５】潤滑油ポンプ２から圧送した潤滑油を潤滑
油ライン３→潤滑油冷却器４へ送り、ここで冷却した潤
滑油を冷却器出口ライン５→温調弁６へ送り、ここで
は、潤滑油の温度を約６０°Ｃに調節するために、潤滑
油ライン３からの潤滑油と混合する。この温調弁６で約
６０°Ｃに温度調節した潤滑油を潤滑油主こし器７へ送
り、同潤滑油主こし器７で濾過して異物を除去した潤滑
油を主こし器出口ライン８→油性状オンライン分析計９
へ送りここで劣化°を測定し、次いでエンジン１の供給
ラインへ戻して、エンジン１へ供給する。The lubricating oil pumped from the lubricating oil pump 2 is sent to the lubricating oil line 3 → the lubricating oil cooler 4, and the lubricating oil cooled here is sent to the cooler outlet line 5 → the temperature control valve 6 where lubrication is performed. Mix with lubricating oil from lubricating oil line 3 to adjust oil temperature to about 60 ° C. The lubricating oil whose temperature is adjusted to about 60 ° C by the temperature control valve 6 is sent to the lubricating oil main strainer 7, and the lubricating oil from which the foreign matter is removed by filtering with the lubricating oil main strainer 7 is discharged through the main strainer outlet line 8 → Oil property online analyzer 9
Then, the deterioration degree is measured here, and then it is returned to the supply line of the engine 1 and supplied to the engine 1.
【０００６】また潤滑油主こし器７内の逆洗油を→主こ
し器出口ライン１０→逆洗油こし器１１→潤滑油サンプ
タンク１２へ戻す。また同潤滑油サンプタンク１２内の
逆洗油（潤滑油）を清浄機供給ライン１３→潤滑油清浄
機１４へ送り、ここで遠心分離を利用して、潤滑油に混
入している異物を除去して、清浄化し、次いでこの清浄
化した潤滑油を清浄機戻りライン１５→潤滑油サンプタ
ンク１２へ戻す。Further, the backwash oil in the lubricating oil main strainer 7 is returned to the main strainer outlet line 10 → the backwash oil strainer 11 → the lubricating oil sump tank 12. Further, the backwash oil (lubricating oil) in the lubricating oil sump tank 12 is sent to the purifier supply line 13 → the lubricating oil purifier 14, where centrifugal separation is used to remove foreign matter mixed in the lubricating oil. Then, it is cleaned, and then the cleaned lubricating oil is returned to the purifier return line 15 → the lubricating oil sump tank 12.
【０００７】またエンジン１を潤滑した排油をサンプタ
ンク供給ライン１６→潤滑油サンプタンク１２へ戻す。
次に上記油性状オンライン分析計９の詳細を図６により
具体的に説明すると、２０がレーザダイオード、２１が
冷却マウント、２２が温度コントローラ、２３がレーザ
ダイオード電源、２４がコリメータレンズ、２５がレー
ザ、２６が潤滑油、２７が透過光、２８が集光レンズ、
２９が受光素子、３０が冷却素子、３１が内部温度コン
トローラ、３２が微弱電流、３３がプリアンプ、３４が
濃度演算処理部である。Further, the exhaust oil that lubricates the engine 1 is returned to the sump tank supply line 16 → the lubricating oil sump tank 12.
Next, the details of the oil property online analyzer 9 will be specifically described with reference to FIG. 6. Reference numeral 20 is a laser diode, 21 is a cooling mount, 22 is a temperature controller, 23 is a laser diode power supply, 24 is a collimator lens, and 25 is a laser. , 26 is lubricating oil, 27 is transmitted light, 28 is a condenser lens,
Reference numeral 29 is a light receiving element, 30 is a cooling element, 31 is an internal temperature controller, 32 is a weak current, 33 is a preamplifier, and 34 is a concentration calculation processing section.
【０００８】上記図６に示す油性状オンライン分析計９
では、レーザダイオード２０を冷却マウント２１に設置
しており、温度コントローラ２２により、設定された温
度（制御温度しては、±０．０１°Ｃ）及びレーザダイ
オード電源２３からの一定電流により、波長を制御す
る。レーザダイオード２０を出たレーザ２５をコリメー
タレンズ２４により平行な光にして、潤滑油２６へ照射
する。The oil property online analyzer 9 shown in FIG. 6 above.
Then, the laser diode 20 is installed in the cooling mount 21, and the temperature is set by the temperature controller 22 (the control temperature is ± 0.01 ° C.) and the constant current from the laser diode power supply 23 causes the wavelength to change. To control. The laser 25 emitted from the laser diode 20 is converted into parallel light by the collimator lens 24 and is applied to the lubricating oil 26.
【０００９】また潤滑油２６を透過した透過光２７を集
光レンズ２８により集光した後、受光素子２９へ当て
る。この受光素子２９は、感度を向上させるために、冷
却素子３０と内部温度コントローラ３１とにより、冷却
されている。同受光素子２９では、光を微弱電流３２に
変えて、プリアンプ３３へ送る。そして同プリアンプ３
３では、微弱電流３２を増幅して、濃度演算処理部３４
へ送って、ここで潤滑油の劣化度を算出する。The transmitted light 27 that has passed through the lubricating oil 26 is condensed by a condenser lens 28 and then applied to a light receiving element 29. The light receiving element 29 is cooled by the cooling element 30 and the internal temperature controller 31 in order to improve the sensitivity. The light receiving element 29 converts light into a weak current 32 and sends it to the preamplifier 33. And the same preamplifier 3
3, the weak current 32 is amplified and the concentration calculation processing unit 34
To calculate the degree of deterioration of the lubricating oil.
【００１０】[0010]
【発明が解決しようとする課題】前記図５、図６に示す
従来の潤滑油劣化度測定装置には、次の問題があった。
即ち、潤滑油の劣化を進める熱酸化分解物であるカルボ
ニル基或いはケトン基が赤外線で表される波長は、基準
振動が５７８０ｍｍ、２倍音２１００ｍｍ、３倍音１６
８０ｍｍ、４倍音１５００ｍｍ、５倍音９４０ｍｍ、６
倍音８４８ｍｍ、７倍音７６０ｍｍであり、現在市販さ
れているレーザダイオード（レーザ出力用半導体）のう
ち、図７に示すように、ＧａＡｓ／ＧａＡｌＡｓは、７
４０ｍｍ〜９０５ｍｍ、まはＩｎＧａＡｓＰは、１１８
０ｍｍ〜１２３０ｍｍ、１２８０ｍｍ〜１３３０ｍｍ、
及び１５２０ｍｍ〜１５８０ｍｍの波長範囲である。The conventional lubricating oil deterioration measuring device shown in FIGS. 5 and 6 has the following problems.
That is, the wavelength at which the carbonyl group or the ketone group, which is a thermal oxidative decomposition product that promotes deterioration of the lubricating oil, is represented by infrared rays has a reference vibration of 5780 mm, a second harmonic 2100 mm, and a third harmonic 16
80mm, 4th overtone 1500mm, 5th overtone 940mm, 6
The overtone is 848 mm and the 7th overtone is 760 mm. Among laser diodes (laser output semiconductors) currently on the market, GaAs / GaAlAs is 7 as shown in FIG.
40 mm to 905 mm or InGaAsP is 118
0 mm to 1230 mm, 1280 mm to 1330 mm,
And a wavelength range of 1520 mm to 1580 mm.
【００１１】従って現在市販されているレーザダイオー
ドでは、熱酸化分解物であるカルボニル基或いはケトン
基の６倍音或いは７倍音しか計測できず、その結果、感
度（Ｓ／Ｎ比）が悪くて、潤滑油の劣化度を精度よく判
定できないという問題があった。本発明は前記の問題点
に鑑み提案するものであり、その目的とする処は、感度
（Ｓ／Ｎ比）が良くて、潤滑油の劣化度を精度よく、迅
速に判定できる。またエンジン構成部材の摩耗を抑制で
きる潤滑油劣化度測定装置を提供しようとする点にあ
る。Therefore, the commercially available laser diode can measure only the 6th or 7th overtone of the thermal oxidation decomposition product carbonyl group or ketone group, resulting in poor sensitivity (S / N ratio) and lubrication. There is a problem that the degree of deterioration of oil cannot be accurately determined. The present invention is proposed in view of the above problems, and the object thereof is to have a good sensitivity (S / N ratio) and to accurately and quickly determine the degree of deterioration of lubricating oil. Another object is to provide a lubricating oil deterioration degree measuring device capable of suppressing wear of engine constituent members.
【００１２】[0012]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の潤滑油劣化度測定装置は、回折格子或い
はフイルターにより２．１μから２．２μの波長の光を
分光する分光部と、同分光部から照射される光を供試潤
滑油に当てるフローセル部と、上記供試潤滑油を透過す
る透過光を受光して電流に変換する受光素子と、同受光
素子から出力される信号に基づいて油の劣化度を演算す
る劣化度演算処理部とを具えている。In order to achieve the above object, the lubricating oil deterioration measuring apparatus of the present invention comprises a spectroscopic section for separating light having a wavelength of 2.1 μ to 2.2 μ by a diffraction grating or a filter. And a flow cell section that applies the light emitted from the spectroscopic section to the test lubricating oil, a light receiving element that receives the transmitted light that passes through the test lubricating oil and converts it into an electric current, and the light receiving element outputs the light. And a deterioration degree calculation processing section for calculating the deterioration degree of oil based on the signal.
【００１３】[0013]
【作用】本発明の潤滑油劣化度測定装置は前記のように
構成されており、次の作用が行われる。即ち、ランプか
らの赤外線領域のうち、２１００ｍｍ〜２３００ｍｍの
光を回折格子或いはフイルターにより分光し、この光を
フローセル部を流れる潤滑油に照射し、その透過光を受
光素子により電流に変換し、プリアンプ等により増幅し
て、劣化度を演算する劣化度演算処理部へ入れて、劣化
度を測定する。一般に潤滑油の劣化度は、徐々に進行す
るので、潤滑油の劣化がある程度進行すると、例えば粘
度が通常の１．２倍程度まで上昇すると、その時点で警
報を発して、新油を供給するようにすればよい。本発明
では、潤滑油の劣化度をオンラインで測定可能であり、
潤滑不良によるエンジンの故障が未然に防止される。The lubricating oil deterioration measuring device of the present invention is constructed as described above, and has the following actions. That is, in the infrared region from the lamp, light of 2100 mm to 2300 mm is dispersed by a diffraction grating or a filter, the lubricating oil flowing through the flow cell is irradiated with this light, and the transmitted light is converted into a current by a light receiving element, and a preamplifier is used. Etc., and the deterioration degree is measured by inputting it to a deterioration degree calculation processing unit that calculates the deterioration degree. In general, the degree of deterioration of lubricating oil gradually progresses. Therefore, when the degree of deterioration of lubricating oil progresses to some extent, for example, when the viscosity rises to about 1.2 times the normal level, an alarm is issued at that point and new oil is supplied. You can do it like this. In the present invention, the deterioration degree of the lubricating oil can be measured online,
Engine failure due to poor lubrication is prevented.
【００１４】[0014]
【実施例】次に本発明の潤滑油劣化度測定装置を図１に
示す一実施例により説明すると、１がランプ、４２がチ
ヨツパー、４３が分光器、４４がフローセル部、４５が
潤滑油、４６が劣化油、４７がサーモクーラー、４８が
サーモコントローラ電源、４９が熱電対コントローラ、
５０が潤滑油ボトル、５１が劣化油ボトル、５２が潤滑
油ポンプ、５３が劣化油ポンプ、５４がクーラー電源、
５５が熱電対コントローラ、５６がヒーター電源、５７
が熱電対コントローラ、５８がクーラー、５９がヒータ
ー、６０が水槽、６１が受光素子、６２がアンプ、６３
が移動用モータ、６４、６５がモータドライバ、６９が
演算処理部（コンピユータ）で、同演算処理部６９は、
主制御部６６と、演算部６７と、記憶部６８とを有して
いる。また７１がＣＲＴで、同ＣＲＴ７１は、７０が表
示部を有している。EXAMPLE Next, a lubricating oil deterioration measuring device of the present invention will be described with reference to an example shown in FIG. 1. 1 is a lamp, 42 is a cutter, 43 is a spectroscope, 44 is a flow cell part, 45 is lubricating oil, 46 is deteriorated oil, 47 is a thermo cooler, 48 is a thermo controller power supply, 49 is a thermocouple controller,
50 is a lubricating oil bottle, 51 is a deteriorated oil bottle, 52 is a lubricating oil pump, 53 is a deteriorated oil pump, 54 is a cooler power source,
55 is a thermocouple controller, 56 is a heater power supply, 57
Is a thermocouple controller, 58 is a cooler, 59 is a heater, 60 is a water tank, 61 is a light receiving element, 62 is an amplifier, 63
Is a moving motor, 64 and 65 are motor drivers, 69 is an arithmetic processing unit (computer), and the arithmetic processing unit 69 is
It has a main control unit 66, a calculation unit 67, and a storage unit 68. Further, 71 is a CRT, and 70 of the CRT 71 has a display section.
【００１５】次に前記図１に示す潤滑油劣化度測定装置
の作用を具体的に説明する。ランプ４１から出た赤外線
を、モータにより回転しているチヨツパー４２へ入れ、
光をチヨツプして、分光器４３へ入れる。この分光器４
３では、２１００ｍｍの赤外線から２２００ｍｍの熱酸
化分割物の２倍音を表す波長の光のみを分けて、フロー
セル部４４へ入れる。即ち、エンジン１からの潤滑油
（エンジン油）を主こし器出口ライン（図５の８参照）
→潤滑油ボトル５０→潤滑油ポンプ５２→サーモクーラ
ー（２０°Ｃに温度調整するサーモクーラー）４７→フ
ローセル部４４へ入れる。Next, the operation of the lubricating oil deterioration measuring device shown in FIG. 1 will be specifically described. Infrared rays emitted from the lamp 41 are put into the chipper 42 which is rotated by the motor,
The light is adjusted and put into the spectroscope 43. This spectroscope 4
In No. 3, only the light having the wavelength representing the second overtone of the thermal oxidation split product of 2200 mm is split from the infrared light of 2100 mm and put into the flow cell unit 44. That is, the lubricating oil (engine oil) from the engine 1 is used as a main strainer outlet line (see 8 in FIG. 5).
→ Lubricant oil bottle 50 → Lubricant oil pump 52 → Thermo cooler (thermo cooler whose temperature is adjusted to 20 ° C.) 47 → Put it in the flow cell section 44.
【００１６】また劣化して交換を必要としている劣化油
４６を劣化油ボトル５１→劣化油ポンプ５３→サーモク
ーラー（２０°Ｃに温度調整するサーモクーラー）４７
→フローセル部４４へ入れる。このフロークーラー４７
は、サーモコントローラ電源４８及び熱電対コントロー
ラに温度制御されている。またフローセル部４４を出た
劣化油４６を劣化油ボトル５１へ戻す。一方、フローセ
ル部４４を出た潤滑油４５をエンジン１へ供給する。The deteriorated oil 46 that has deteriorated and needs to be replaced is deteriorated oil bottle 51 → deteriorated oil pump 53 → thermo cooler (thermo cooler whose temperature is adjusted to 20 ° C.) 47.
→ Put in the flow cell section 44. This flow cooler 47
Is temperature controlled by the thermo controller power supply 48 and the thermocouple controller. Further, the deteriorated oil 46 that has flowed out of the flow cell unit 44 is returned to the deteriorated oil bottle 51. On the other hand, the lubricating oil 45 exiting the flow cell portion 44 is supplied to the engine 1.
【００１７】上記潤滑油ボトル５０及び上記劣化油ボト
ル５１は、水槽６０中にあり、同水槽６０は、ヒーター
５９及びクーラー５８により温度調整され、クーラー５
８は、クーラー電源５４及び熱電対コントローラ５５に
より温度制御されている。またヒーター５９は、ヒータ
ー電源５６及び熱電対コントローラ５７により温度制御
されている。The lubricating oil bottle 50 and the deteriorated oil bottle 51 are in a water tank 60, and the temperature of the water tank 60 is adjusted by a heater 59 and a cooler 58 to cool the cooler 5.
8 is temperature-controlled by the cooler power supply 54 and the thermocouple controller 55. The temperature of the heater 59 is controlled by the heater power supply 56 and the thermocouple controller 57.
【００１８】なお劣化油４６は、潤滑油（エンジン油）
４５と比較するために用いる。潤滑油４５が劣化油４６
と同じ性状になったときには、潤滑油４５を交換するこ
とになる。上記フローセル部４４では、潤滑油４５及び
劣化油４６を透過した光を受光素子６１に当てて、電流
に変換し、次いでアンプ６２により増幅して、コンピユ
ータ６９内の演算部６７へ送る。上記フローセル部４４
では、光を潤滑油４５と劣化油４６とに交互に当てるた
めに、移動用モータ６３により回転している。この移動
用モータ６３は、コンピユータ６９内の主制御部６６→
モータドライバ６４を経て送られてくる制御信号により
制御されている。The deteriorated oil 46 is a lubricating oil (engine oil).
Used for comparison with 45. Lubricating oil 45 is deteriorated oil 46
When the property becomes the same, the lubricating oil 45 will be replaced. In the flow cell unit 44, the light transmitted through the lubricating oil 45 and the deteriorated oil 46 is applied to the light receiving element 61 to be converted into an electric current, which is then amplified by the amplifier 62 and sent to the arithmetic unit 67 in the computer 69. The flow cell unit 44
Then, in order to alternately apply the light to the lubricating oil 45 and the deteriorated oil 46, it is rotated by the moving motor 63. The moving motor 63 is provided in the main controller 66 in the computer 69.
It is controlled by a control signal sent via the motor driver 64.
【００１９】分光器４３でも、コンピユータ６９内の記
憶部６８→演算部６７→主制御部６６を経て送られてく
る指令により、分光器４３内の回折格子を回転させて、
劣化度を判定する波長のみを分光している。上記図１に
示す潤滑油劣化度測定装置により、実機エンジン油につ
いて、油の劣化度を表す塩基化〔ｍｇＫＯＨ／ｇ〕、動
粘度〔Ｃｓｔ〕を分析する。その値と２１５０ｍｍにお
ける吸光度との関係を図２、図３、図４に示す。これら
図２、図３、図４に示すようにそれぞれの精度は、２ｍ
ｇＫＯＨ／ｇ、０．１ｍｇＫＯＨ／ｇ、５Ｃｓｔで非常
に精度よく計算できることが判明した。Also in the spectroscope 43, the diffraction grating in the spectroscope 43 is rotated by a command sent from the storage section 68 in the computer 69, the arithmetic section 67, and the main control section 66.
Only the wavelength for determining the degree of deterioration is dispersed. The basic oil [mgKOH / g] and kinematic viscosity [Cst] representing the deterioration degree of the actual engine oil are analyzed with the lubricating oil deterioration measuring device shown in FIG. The relationship between the value and the absorbance at 2150 mm is shown in FIGS. 2, 3 and 4. As shown in FIGS. 2, 3 and 4, the accuracy of each is 2 m.
It was found that gKOH / g, 0.1 mgKOH / g, and 5Cst can be calculated very accurately.
【００２０】またコンピユータ６９の演算部６７におい
て、劣化度を表す塩基価、全酸価、及び粘度を総合的に
判断するために、次式式により劣化度を判定する。 総合的劣化度Ｔ＝Ｋ1 塩基価劣化度Ａ＋Ｋ2 全酸価劣化
度Ｂ＋Ｋ3 動粘度劣化度Ｃ・・・・・・・・・ 上記演算部６７での上記式による総合的劣化度Ｔは、
記憶部６８に記憶され、その一部がＣＲＴ７１内になる
表示部７０に表示される。Further, in the computing unit 67 of the computer 69, in order to comprehensively judge the base value, the total acid value, and the viscosity indicating the deterioration degree, the deterioration degree is judged by the following equation. Overall deterioration degree T = K 1 Base value deterioration degree A + K 2 Total acid value deterioration degree B + K 3 Kinematic viscosity deterioration degree C ... ,
It is stored in the storage unit 68, and a part of it is displayed on the display unit 70 inside the CRT 71.
【００２１】[0021]
【発明の効果】本発明の潤滑油劣化度測定装置は前記の
ように構成されており、次の効果を達成できる。即ち、
基準振動、２倍音、３倍音と倍数が大きくなると、感度
（Ｓ／Ｎ比）が悪くなる。一方、潤滑油の劣化度をオン
ラインで測定するには、フローセルに油を流す必要があ
り、そのフローセルの幅（光路長）は、実用的には１０
０μ以上でないと、汚れた油は、流れない。また基準振
動では、油の吸光度が大き過ぎて、光が受光素子に当た
らず、１００μ以下の油膜にして、光を受光素子に当て
る必要がある。そこで油が流れる厚さ（例えば５００
μ）で且つ最も熱酸化物の感度がよい倍音として、２倍
音にすると、２１００ｍｍから２２００ｍｍ（油の成分
によりその中心波長は、変化するため、例えは２１５０
ｍｍ、２１５６ｍｍ等）の光がオンライン劣化度測定装
置としては、高Ｓ／Ｎ比が受光素子で得られる。この
点、従来の半導体を使用した潤滑油劣化度測定装置で
は、熱酸化分解物であるカルボニル基或いはケトン基の
６倍音或いは７倍音しか計測できず、その結果、感度
（Ｓ／Ｎ比）が悪くて、潤滑油の劣化度を精度よく判定
できなかったが、本発明では、感度（Ｓ／Ｎ比）のよい
２倍音を計測できるので、感度（Ｓ／Ｎ比）が高くて、
潤滑油の劣化度を精度よく迅速に判定できる。The lubricating oil deterioration measuring device of the present invention is constructed as described above, and the following effects can be achieved. That is,
The sensitivity (S / N ratio) deteriorates when the reference vibration, the second harmonic, and the third harmonic become large. On the other hand, in order to measure the deterioration degree of the lubricating oil online, it is necessary to flow the oil into the flow cell, and the width (optical path length) of the flow cell is practically 10
Unless it is 0 μ or more, dirty oil does not flow. In the reference vibration, the light absorbency of the oil is too large and the light does not hit the light receiving element. Therefore, it is necessary to form an oil film of 100 μ or less and apply the light to the light receiving element. So the thickness of oil flow (eg 500
μ) and the harmonic overtone with the highest thermal oxide sensitivity, the second harmonic is 2100 mm to 2200 mm (the center wavelength changes depending on the oil component, for example, 2150 mm).
(mm, 2156 mm, etc.), a high S / N ratio can be obtained by the light receiving element as an online deterioration degree measuring device. In this respect, the conventional lubricant deterioration measuring device using the semiconductor can measure only the 6th or 7th overtone of the carbonyl group or the ketone group, which is a thermal oxidative decomposition product, and as a result, the sensitivity (S / N ratio) is increased. The deterioration degree of the lubricating oil could not be accurately determined, but in the present invention, since the overtone with good sensitivity (S / N ratio) can be measured, the sensitivity (S / N ratio) is high,
The deterioration degree of the lubricating oil can be accurately and quickly determined.
【００２２】また本発明では、エンジン構成部材（シリ
ンダ、ピストン等）が潤滑油の劣化のために摩耗する前
に、予測診断できるので、エンジン構成部材の摩耗を抑
制できる。Further, according to the present invention, since predictive diagnosis can be performed before the engine constituent members (cylinder, piston, etc.) are worn due to deterioration of the lubricating oil, the wear of the engine constituent members can be suppressed.
【図１】本発明の潤滑油劣化度測定装置の一実施例を示
す系統図である。FIG. 1 is a system diagram showing an embodiment of a lubricating oil deterioration measuring device of the present invention.
【図２】本発明の潤滑油劣化度測定装置の分析計の塩基
性と吸光度との関係を示す説明図である。FIG. 2 is an explanatory diagram showing the relationship between the basicity and the absorbance of the analyzer of the lubricating oil deterioration measuring device of the present invention.
【図３】本発明の潤滑油劣化度測定装置の分析計の全酸
価と吸光度との関係を示す説明図である。FIG. 3 is an explanatory diagram showing the relationship between the total acid value and the absorbance of the analyzer of the lubricating oil deterioration measuring device of the present invention.
【図４】本発明の潤滑油劣化度測定装置の分析計の動粘
度と吸光度との関係を示す説明図である。FIG. 4 is an explanatory diagram showing the relationship between the kinematic viscosity and the absorbance of the analyzer of the lubricating oil deterioration measuring device of the present invention.
【図５】従来の潤滑油劣化度測定装置を示す系統図であ
る。FIG. 5 is a system diagram showing a conventional lubricating oil deterioration measuring device.
【図６】従来の潤滑油劣化度測定装置の分析計の詳細を
示す系統図である。FIG. 6 is a system diagram showing details of an analyzer of a conventional lubricating oil deterioration measuring device.
【図７】レーザーダイオードの波長及び出力を示す説明
図である。FIG. 7 is an explanatory diagram showing wavelengths and outputs of laser diodes.
４３ 分光部 ４４ フローセル部 ６１ 受光素子 ６９ 劣化度演算処理部 43 spectroscopic unit 44 flow cell unit 61 light receiving element 69 deterioration degree calculation processing unit
Claims (1)
μから２．２μの波長の光を分光する分光部と、同分光
部から照射される光を供試潤滑油に当てるフローセル部
と、上記供試潤滑油を透過する透過光を受光して電流に
変換する受光素子と、同受光素子から出力される信号に
基づいて油の劣化度を演算する劣化度演算処理部とを具
えていることを特徴とした潤滑油劣化度測定装置。1. 2.1 with a diffraction grating or a filter
A spectroscopic unit that disperses light with a wavelength of μ to 2.2μ, a flow cell unit that applies the light emitted from the spectroscopic unit to the lubricating oil under test, and the transmitted light that passes through the lubricating oil under test receives the current. A lubricating oil deterioration degree measuring device, comprising: a light receiving element for converting into oil and a deterioration degree calculation processing section for calculating the deterioration degree of oil based on a signal output from the light receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996592A JP2902198B2 (en) | 1992-02-05 | 1992-02-05 | Lubricating oil deterioration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1996592A JP2902198B2 (en) | 1992-02-05 | 1992-02-05 | Lubricating oil deterioration measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05215675A true JPH05215675A (en) | 1993-08-24 |
| JP2902198B2 JP2902198B2 (en) | 1999-06-07 |
Family
ID=12013912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1996592A Expired - Lifetime JP2902198B2 (en) | 1992-02-05 | 1992-02-05 | Lubricating oil deterioration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2902198B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982000163A1 (en) * | 1980-06-27 | 1982-01-21 | Fukata S | Polyphenylene sulfide filament sheets and process for their production |
| JP2008051677A (en) * | 2006-08-25 | 2008-03-06 | Kansai Electric Power Co Inc:The | Deterioration diagnosis device of lubricating oil |
| US9128025B2 (en) | 2009-08-12 | 2015-09-08 | Siemens Aktiengesellschaft | Method and device for determining chemical and/or physical properties of working substances in a machine system |
| WO2015178823A1 (en) * | 2014-05-19 | 2015-11-26 | Aktiebolaget Skf | Bearing arrangement and method for determining optical properties of a lubricant in a bearing |
| CN107228836A (en) * | 2017-05-30 | 2017-10-03 | 武汉材料保护研究所 | The infrared spectrum on-line testing method of lubricating oil high-temp friction process |
| CN107358374A (en) * | 2017-08-07 | 2017-11-17 | 中国石油集团渤海钻探工程有限公司 | A kind of pressure break decision-making technique based on test data and flow unit |
| CN110208499A (en) * | 2019-07-01 | 2019-09-06 | 北京瑞尔腾普科技有限公司 | Lubricating oil temperature pilot system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389282A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Near-infrared photoelectric sensing technology based oil spill monitoring system |
-
1992
- 1992-02-05 JP JP1996592A patent/JP2902198B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982000163A1 (en) * | 1980-06-27 | 1982-01-21 | Fukata S | Polyphenylene sulfide filament sheets and process for their production |
| JP2008051677A (en) * | 2006-08-25 | 2008-03-06 | Kansai Electric Power Co Inc:The | Deterioration diagnosis device of lubricating oil |
| JP4584209B2 (en) * | 2006-08-25 | 2010-11-17 | 関西電力株式会社 | Lubricating oil deterioration diagnosis device |
| US9128025B2 (en) | 2009-08-12 | 2015-09-08 | Siemens Aktiengesellschaft | Method and device for determining chemical and/or physical properties of working substances in a machine system |
| WO2015178823A1 (en) * | 2014-05-19 | 2015-11-26 | Aktiebolaget Skf | Bearing arrangement and method for determining optical properties of a lubricant in a bearing |
| CN107228836A (en) * | 2017-05-30 | 2017-10-03 | 武汉材料保护研究所 | The infrared spectrum on-line testing method of lubricating oil high-temp friction process |
| CN107228836B (en) * | 2017-05-30 | 2020-05-22 | 武汉材料保护研究所 | Infrared spectrum on-line testing method for lubricating oil high-temperature friction process |
| CN107358374A (en) * | 2017-08-07 | 2017-11-17 | 中国石油集团渤海钻探工程有限公司 | A kind of pressure break decision-making technique based on test data and flow unit |
| CN110208499A (en) * | 2019-07-01 | 2019-09-06 | 北京瑞尔腾普科技有限公司 | Lubricating oil temperature pilot system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2902198B2 (en) | 1999-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2021119343A (en) | Noninvasive material analysis | |
| US4707603A (en) | Procedure for measuring contents of hydrocarbons in liquids containing such | |
| US4990780A (en) | Method for determining fuel and engine oil comsumption using tunable diode laser spectroscopy | |
| JPH0712723A (en) | Device for measuring degradation degree of lubrication oil | |
| US5751418A (en) | Spectrometry and optical method and apparatus for obtaining a stable spectrum with use of an informationless spectrum contained therein | |
| JP2520212B2 (en) | Concentration measuring device | |
| US5742064A (en) | System for detecting impurities contained in a flowing petroleum product | |
| US20040201835A1 (en) | Low-cost on-line and in-line spectral sensors based on solid-state source and detectors combinations for monitoring lubricants and functional fluids | |
| US11209351B2 (en) | Inferential fluid condition sensor and method thereof | |
| US20060176478A1 (en) | Raman spectroscopy with stabilized multi-mode lasers | |
| JP2902198B2 (en) | Lubricating oil deterioration measuring device | |
| US7172903B2 (en) | Method for on-line monitoring of lubricating oil using light in the visible and near IR spectra | |
| JP2015031544A5 (en) | ||
| JP2000193524A (en) | Method and system for measuring light absorption spectrum | |
| JP3034914B2 (en) | Lubricating oil deterioration measuring device | |
| JPH0862207A (en) | Degradation detection method for lubricating oil | |
| Ford Jr et al. | Brillouin Linewidths in C O 2 Near the Critical Point | |
| JPH03176645A (en) | Component measuring instrument of food | |
| KR100356639B1 (en) | Device for measuring oil contamination | |
| JP2000022255A (en) | Method for stabilizing and controlling fluorine gas concentration and control mechanism thereof | |
| Funkenbusch et al. | Dual-Wavelength Holographic Cytometry for Red Blood Cell Disease Diagnosis | |
| JP2588900B2 (en) | Method and apparatus for measuring particles in fluid | |
| JPH10142147A (en) | Method for measuring concentration of nitrogen oxides | |
| FR2576106A1 (en) | Apparatus for studying the formation of aggregates and/or precipitates in a physiological medium and the prior phases, in particular intended for studying platelet aggregating functions and the change in form of the platelets | |
| WO2021149762A1 (en) | Oil state diagnostic method and oil state diagnostic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990216 |