JPH02280032A - Continuous evaluation device for exhaust smoke processor - Google Patents
Continuous evaluation device for exhaust smoke processorInfo
- Publication number
- JPH02280032A JPH02280032A JP10068789A JP10068789A JPH02280032A JP H02280032 A JPH02280032 A JP H02280032A JP 10068789 A JP10068789 A JP 10068789A JP 10068789 A JP10068789 A JP 10068789A JP H02280032 A JPH02280032 A JP H02280032A
- Authority
- JP
- Japan
- Prior art keywords
- smoke
- receiving sensor
- exhaust
- light receiving
- exhaust gas
- 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
- 239000000779 smoke Substances 0.000 title claims abstract description 78
- 238000011156 evaluation Methods 0.000 title claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、排気煙処理装芒の前後における煙濃度差をイ
ンラインで連続評価する装置に関するものであり、特に
ディーゼル排気煙処理装置の過渡特性の評価に有効な連
続評価装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for continuously evaluating in-line the difference in smoke concentration before and after an exhaust smoke treatment device, and in particular to a device for evaluating the transient characteristics of a diesel exhaust smoke treatment device. The present invention relates to a continuous evaluation device that is effective for evaluation.
Ｃ従来の技術］
従来、ディーゼル排気煙の処理装置としては例えばディ
ーゼル・パーティキュレート・フィルタ（Ｄ Ｐ Ｆ）
と呼ばれるフィルタートラップ・システム等が用いられ
ており、これらの性能評価は、ＤＰＦ等の装着時及び非
装、ｎ時の煙濃度を個別的にスモークメータ法やろ紙捕
集法（質量測定法）でオフライン計測することにより実
施してぃる。C. Prior Art] Conventionally, as a diesel exhaust smoke treatment device, for example, a diesel particulate filter (DPF) is used.
The performance of these systems is evaluated using the smoke meter method and the filter paper collection method (mass measurement method) to measure the smoke concentration with and without the DPF, etc. This is done by offline measurement.
しかしながら、このような方法では、計測が繁雑で長時
間を必要とすることの他、ＤＰＦ等の装着時と非装着時
について異なる時間における煙濃度を計測することにな
るので、排気煙処理装置の正確な評価を行うことができ
ず、特に排気煙処理装置の過渡特性の計測評価を行うこ
とは困難である。However, with such a method, measurement is complicated and requires a long time, and smoke concentration is measured at different times with and without a DPF etc. installed, so the exhaust smoke treatment equipment is Accurate evaluation cannot be performed, and it is particularly difficult to perform measurement evaluation of the transient characteristics of exhaust smoke treatment equipment.
［発明が解決しようとする課題］
本発明の技術的課題は、上述した排気煙処理装置の定常
及び過渡性能を実時間で正確に計測評価できるようにし
た連続評価装置を得ることにある。[Problems to be Solved by the Invention] A technical problem of the present invention is to obtain a continuous evaluation device that can accurately measure and evaluate the steady-state and transient performance of the above-mentioned exhaust smoke treatment device in real time.
［課題を解決するための手段］
上記課題を解決するための本発明の評価装置は、排気ガ
ス通路における排気煙処理装置の下流側に配設されるス
モークメータと、上記排気煙処理装置の下流側に配設さ
れる複数台のスモークメータとを備え、これらのスモー
クメータは、排気ガス通路を挟んで光源及び受光センサ
を設けると共に、その光源からの光を直接的に受光する
参照用受光センサを設け、それらの光源、受光センサ及
び参照用受光センサに冷却装置を付設することにより構
成し、上記受光センサ及び参照用受光センサを参照用受
光センサの出力に基づいて温度によるドリフトの影響を
排除して、排気ガス処理装置の前後における煙濃度及び
それらの間の神祇減率を連続的に求める演算処理装置に
接続したことを特徴とするものである。[Means for Solving the Problems] An evaluation device of the present invention for solving the above problems includes a smoke meter disposed on the downstream side of the exhaust smoke treatment device in the exhaust gas passage, and a smoke meter disposed on the downstream side of the exhaust smoke treatment device in the exhaust gas passage. These smoke meters are equipped with a light source and a light receiving sensor across the exhaust gas passage, and a reference light receiving sensor that directly receives light from the light source. A cooling device is attached to the light source, the light receiving sensor, and the reference light receiving sensor to eliminate the influence of temperature drift on the light receiving sensor and the reference light receiving sensor based on the output of the reference light receiving sensor. The present invention is characterized in that it is connected to an arithmetic processing device that continuously determines the smoke concentration before and after the exhaust gas treatment device and the reduction rate between them.
［作 用］
排気ガス入口から導入した未処理ガスの煙濃度は、排気
煙処理装置の上流側及び下流側においてスモークメータ
で計測され、それらのスモークメータにおける受光セン
サ及び参照用受光センサの出力データが、演算処理装置
において処理され、排気煙処ＪＩＪ！装置の前後におけ
る煙濃度の他、神祇減率等が連続的に測定される。[Function] The smoke concentration of the untreated gas introduced from the exhaust gas inlet is measured by smoke meters on the upstream and downstream sides of the exhaust smoke treatment device, and the output data of the light receiving sensor and reference light receiving sensor in these smoke meters is measured. is processed in the arithmetic processing unit, and the exhaust smoke JIJ! In addition to the smoke density before and after the device, the rate of decline in natural gas and other factors are continuously measured.
このような煙濃度の計測においては、受光センサが高温
の排気ガスによる熱の影響を受け、ドリフトが生じるこ
とになるが、参照用受光センサの出力を利用し、上記ド
リフトをキャンセルすることにより、その影響が排除さ
れる。In measuring smoke concentration in this way, the light receiving sensor is affected by heat from high-temperature exhaust gas, which causes drift, but by canceling the drift by using the output of the reference light receiving sensor, Its influence is eliminated.
［実施例］ 以下に本発明の実施例を図面を参照しながら詳述する。[Example] Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は、排気煙処理装置に本発明に係る連続評価装置
を装着した状態を示している。同図における排気煙処理
装置１は、ディーゼルエンジンやガスタービン等の排気
流路に接続されるもので、排気ガス人口２から流入した
未処理ガスがそこで処理された後、排気ガス出口３を通
して排出される。FIG. 1 shows a state in which a continuous evaluation device according to the present invention is attached to an exhaust smoke treatment device. The exhaust smoke treatment device 1 in the figure is connected to the exhaust flow path of a diesel engine, gas turbine, etc., and untreated gas flowing in from the exhaust gas population 2 is treated there and then discharged through the exhaust gas outlet 3. be done.
上記排気煙処理装置ｌには、その北流側に１台のスモー
クメータ５が配設され、またその下流側に複数台のスモ
ークメータ６．６． ・が配設される。この下流側の
複数台のスモークメータの出力は、それらを後述の演算
処理装置において重畳して平均するが、それによて、本
発明者が特開昭８３−３２３５４号において開示してい
るように、低濃度域における濃度測定をＳ／Ｎ比が非常
にすぐれた状態で行うことが可能になる。The exhaust smoke treatment device 1 is provided with one smoke meter 5 on its north stream side, and a plurality of smoke meters 6, 6, 6 on its downstream side.・ will be provided. The outputs of the plurality of smoke meters on the downstream side are superimposed and averaged by a processing unit, which will be described later. , it becomes possible to perform concentration measurements in a low concentration region with an extremely excellent S/N ratio.
、上記名スモークメータ５及び８，６．−ψは、同の構
造を有している。その構造について具体的に説明すると
、それらの各スモークメータは、排気ガス通路１１を挟
んで、その一方側に設けた光源１２と、その光源１２か
ら排気カス通路１１を横切って投射されたＪ１１定光を
受光する受光センサ１３とを備えている。この光源１２
と受光センサ１３との間には必要なレンズ系１４が設け
られる。また、光源１２から排気ガス通路１１に至る光
路中にハーフミラ−１５を設け、このハーフミラ−１５
で分離した光を直接的光源１２及び受光センサ１３に近
い位置に設けたエアカーテン空気の入口１７．１８は、
それらを通じて供給される空気によりレンズ系１４が排
気ガスにさらされるのを防ぐものである。, the above-named smoke meters 5 and 8, 6. −ψ has the same structure. To explain the structure specifically, each smoke meter includes a light source 12 provided on one side of the exhaust gas passage 11, and a J11 constant light projected from the light source 12 across the exhaust gas passage 11. and a light receiving sensor 13 that receives the light. This light source 12
A necessary lens system 14 is provided between the light receiving sensor 13 and the light receiving sensor 13 . Further, a half mirror 15 is provided in the optical path from the light source 12 to the exhaust gas passage 11, and this half mirror 15
The air curtain air inlets 17 and 18 are located close to the direct light source 12 and the light receiving sensor 13.
The air supplied through them prevents the lens system 14 from being exposed to exhaust gas.
また、上記光源１２、受光センサ１３及び参照用受光セ
ンサ１６の周辺には、冷却水入口２１から冷却水出口２
２に至る冷却水によってそれらの冷却を行う冷却装置２
０ｔ−設けている。Further, around the light source 12, the light receiving sensor 13, and the reference light receiving sensor 16, there is a cooling water inlet 21 to a cooling water outlet 2.
A cooling device 2 that cools them with cooling water that reaches 2.
0t- is provided.
さらに、上述した受光センサ１３及び参照用受光センサ
１６は、それぞれ受光アンプ２４を介して演算処理装置
に接続し、必要なデータ処理を行うように構成している
。Furthermore, the above-mentioned light receiving sensor 13 and reference light receiving sensor 16 are each connected to an arithmetic processing unit via a light receiving amplifier 24 to perform necessary data processing.
上記構成を有する評価装置においては、排気ガス人口２
から導入した未処理ガスの煙濃度がスモークメータ５に
おいて計測され、その未処理ガスが排気煙処理装置ｌに
おいて処理さ丘た後、下流側のスモークメータ６．６．
−においてその濃度が計測される。各スモークメータ
における煙濃度の計測は、光源１２からの光が排気ガス
通路１１における排気ガス中を通過する間の減衰を、受
光センサ１３において検出することにより行われる。＃
−気煙処理装置ｌにおいて処理されるまでは、煙濃度が
比較的高濃度のため、１台のスモークメータ５によって
も所望の精度で測定可能であるが、排気煙処理装置ｌに
おいて低減処理された後の煙濃度は比較的低濃度のため
、前述したような複数台のスモークメータ６．６．
・を使用した信号重畳方式を用いることにより所望の精
度での測定が可能になる。In the evaluation device having the above configuration, the exhaust gas population 2
The smoke concentration of the untreated gas introduced from the smoke meter 5 is measured, and after the untreated gas is treated in the exhaust smoke treatment device l, it is passed to the smoke meter 6.6 on the downstream side.
- Its concentration is measured at -. The smoke concentration in each smoke meter is measured by the light receiving sensor 13 detecting attenuation while the light from the light source 12 passes through the exhaust gas in the exhaust gas passage 11. #
- Until the smoke is processed in the exhaust smoke processing device 1, the smoke concentration is relatively high, so it can be measured with the desired accuracy even with a single smoke meter 5, but the smoke is reduced in the exhaust smoke processing device 1. Since the smoke concentration after the smoke is relatively low, multiple smoke meters as described above are used.
By using a signal superimposition method using ・, measurement with desired accuracy becomes possible.
各スモークメータ５，８，８． ・における受光セン
サ１３及び参照用受光センサ１６の出力データは、それ
ぞれ受光アンプ２４を介して演算処理装置にヌカされ、
それらのデータの処理により排気煙処理装置ｌの前後に
おける煙濃度の他、煙低減率１通過率等が連続的に測定
される。Each smoke meter 5, 8, 8. The output data of the light-receiving sensor 13 and reference light-receiving sensor 16 at .
By processing these data, in addition to the smoke concentration before and after the exhaust smoke treatment device 1, the smoke reduction rate 1 passage rate, etc. are continuously measured.
このような煙濃度の計測においては、受光センサ１３が
高温の排気ガスによる熱の影響を受け、それらに冷却装
置２０を付設してもドリフトの発生を避けることができ
ない、そのため、前記参照用受光センサ１Ｂの出力を利
用し、演算処理装置におけるデータ処理に際して上記ド
リフトをキャンセルすることにより、その影響が排除さ
れる。また、上述した温度上昇によりスモークメータ５
，６の感度が低下するという問題もあるが、これについ
ても、参照用受光センサｌＢの出力を利用し、演算処理
装置において補正することができる。In such smoke concentration measurement, the light receiving sensor 13 is affected by heat from high-temperature exhaust gas, and even if a cooling device 20 is attached to the light receiving sensor 13, the occurrence of drift cannot be avoided. By using the output of the sensor 1B and canceling the above-mentioned drift during data processing in the arithmetic processing unit, its influence can be eliminated. In addition, due to the temperature rise mentioned above, the smoke meter 5
, 6, but this can also be corrected in the arithmetic processing unit using the output of the reference light receiving sensor IB.
なお、上流側のスモークメータ５及び下流側の各スモー
クメータＢ、８． ・は、排気ガスの流れの方向に設
置位置がずれているため、それらにおいて同時に計測し
たデータは、排気ガスの流れの変動に対して相互に時間
的なずれをもつものどなる。Note that the upstream smoke meter 5 and the downstream smoke meters B, 8. - Since the installation positions are shifted in the direction of the exhaust gas flow, the data measured at the same time will be different in time with respect to fluctuations in the exhaust gas flow.
しかしながら、このようなずれは、排気ガスの流速を求
めることにより補正することができる。However, such deviations can be corrected by determining the flow velocity of the exhaust gas.
第２図は、第１図に示すような構成の評価装置によって
実験を行った結果を示すもので、煙濃度の変動に追従し
て、定常及び過渡性能を正確に計測評価できることがわ
かる。FIG. 2 shows the results of an experiment conducted using the evaluation apparatus configured as shown in FIG. 1, and it can be seen that steady and transient performance can be accurately measured and evaluated by following fluctuations in smoke concentration.
［発明の効果］
以上に詳述した本発明の評価装置によれば、スモークメ
ータの冷却と参照光を７１）用した演算処理により、温
度変化の大きいインライン計測でもドリフトの影響を無
視できる連続的な計測を行うことができる。[Effects of the Invention] According to the evaluation device of the present invention described in detail above, by cooling the smoke meter and calculating processing using the reference light 71), even in-line measurement with large temperature changes can be performed continuously without the influence of drift. measurements can be made.
【図面の簡単な説明】
第１図は本発明に係る評価装置の構成図、第２図は実験
結果を示すグラフである。
ｌ・１１排気煙処８！装置、
５．６ 会スモークメータ、
１１・・排気ガス通路、１２・・光源、１３・・受光セ
ンサ、
１４φ４参照用受光センサ、 ２０・・冷却装置。
煙濃度Ｃオパシティ ３）
斤昏式季（％）BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an evaluation apparatus according to the present invention, and FIG. 2 is a graph showing experimental results. l・11 exhaust smoke area 8! Device, 5.6 Smoke meter, 11. Exhaust gas passage, 12. Light source, 13. Light receiving sensor, 14φ4 reference light receiving sensor, 20. Cooling device. Smoke concentration C opacity 3) Coarseness (%)
Claims (1)
設されるスモークメータと、上記排気煙処理装置の下流
側に配設される複数台のスモークメータとを備え、 これらのスモークメータは、排気ガス通路を挟んで光源
及び受光センサを設けると共に、その光源からの光を直
接的に受光する参照用受光センサを設け、それらの光源
、受光センサ及び参照用受光センサに冷却装置を付設す
ることにより構成し、 上記受光センサ及び参照用受光センサを参照用受光セン
サの出力に基づいて温度によるドリフトの影響を排除し
て、排気ガス処理装置の前後における煙濃度及びそれら
の間の煙低減率を連続的に求める演算処理装置に接続し
た ことを特徴とする排気煙処理装置の連続評価装置。[Claims] 1. A smoke meter disposed upstream of an exhaust smoke treatment device in an exhaust gas passage, and a plurality of smoke meters disposed downstream of the exhaust smoke treatment device, These smoke meters are equipped with a light source and a light-receiving sensor across the exhaust gas passage, and a reference light-receiving sensor that directly receives light from the light source. It is constructed by attaching a cooling device, and the above-mentioned light receiving sensor and reference light receiving sensor are used to eliminate the influence of drift due to temperature based on the output of the reference light receiving sensor, and to calculate the smoke concentration before and after the exhaust gas treatment device and their 1. A continuous evaluation device for an exhaust smoke treatment device, characterized in that the device is connected to an arithmetic processing device that continuously calculates the smoke reduction rate between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068789A JPH02280032A (en) | 1989-04-20 | 1989-04-20 | Continuous evaluation device for exhaust smoke processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10068789A JPH02280032A (en) | 1989-04-20 | 1989-04-20 | Continuous evaluation device for exhaust smoke processor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02280032A true JPH02280032A (en) | 1990-11-16 |
| JPH0585021B2 JPH0585021B2 (en) | 1993-12-06 |
Family
ID=14280646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10068789A Granted JPH02280032A (en) | 1989-04-20 | 1989-04-20 | Continuous evaluation device for exhaust smoke processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02280032A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006184180A (en) * | 2004-12-28 | 2006-07-13 | Toyota Motor Corp | Exhaust gas analyzer |
| JP2006337326A (en) * | 2005-06-06 | 2006-12-14 | Toyota Motor Corp | Exhaust gas analyzer and exhaust gas analysis method |
| JP2006337068A (en) * | 2005-05-31 | 2006-12-14 | Toyota Motor Corp | Exhaust gas analysis method and exhaust gas analyzer |
| JP2007155456A (en) * | 2005-12-02 | 2007-06-21 | Takemasa Kamimoto | Dpf evaluation apparatus |
| JP2010286349A (en) * | 2009-06-11 | 2010-12-24 | Yokogawa Electric Corp | Laser type gas analyzer and gas analysis method using this device |
| WO2011138945A1 (en) * | 2010-05-06 | 2011-11-10 | 日立オートモティブシステムズ株式会社 | Exhaust smoke sensor |
-
1989
- 1989-04-20 JP JP10068789A patent/JPH02280032A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006184180A (en) * | 2004-12-28 | 2006-07-13 | Toyota Motor Corp | Exhaust gas analyzer |
| JP2006337068A (en) * | 2005-05-31 | 2006-12-14 | Toyota Motor Corp | Exhaust gas analysis method and exhaust gas analyzer |
| JP2006337326A (en) * | 2005-06-06 | 2006-12-14 | Toyota Motor Corp | Exhaust gas analyzer and exhaust gas analysis method |
| JP2007155456A (en) * | 2005-12-02 | 2007-06-21 | Takemasa Kamimoto | Dpf evaluation apparatus |
| JP2010286349A (en) * | 2009-06-11 | 2010-12-24 | Yokogawa Electric Corp | Laser type gas analyzer and gas analysis method using this device |
| WO2011138945A1 (en) * | 2010-05-06 | 2011-11-10 | 日立オートモティブシステムズ株式会社 | Exhaust smoke sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0585021B2 (en) | 1993-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4737648A (en) | Apparatus for detecting fibrous particle sizes by detecting scattered light at different angles | |
| US20030218738A1 (en) | Optical flow monitor | |
| JP2002500312A (en) | Turbocharger system | |
| JP2960911B2 (en) | A method for detecting the mass flow distribution of a flow in a plane | |
| US10514283B2 (en) | Exhaust gas flow rate measuring unit and exhaust gas analyzing apparatus | |
| JPH02280032A (en) | Continuous evaluation device for exhaust smoke processor | |
| US20150276614A1 (en) | Smoke concentration measurement system and related methods | |
| CN114324095A (en) | Monitoring device for concentration of particle impurities in gas pipeline | |
| GB1471335A (en) | Apparatus for use in monitoring a stream of gases | |
| Pitz et al. | Experimental study of combustion in a turbulent free shear layer formed at a rearward facing step | |
| JPS60242341A (en) | Measuring instrument of corpuscles density in exhaust gas of internal-combustion engine | |
| JP2001289783A (en) | Method and apparatus for measuring SO3 concentration in exhaust gas | |
| Pitz | An experimental study of combustion: The turbulent structure of a reacting shear layer formed at a rearward-facing step | |
| GB2252621A (en) | Exhaust gas particle measurement | |
| SU1374069A1 (en) | Method of determining acoustic characteristics of exhaust system elements of internal combustion engine | |
| JPH0252214B2 (en) | ||
| IKEGAMI et al. | Measurement of turbulence by laser homodyne technique | |
| RU2824471C1 (en) | Fire hazard control method and device for its implementation | |
| JP2600976Y2 (en) | Ammonia analyzer | |
| RU2044306C1 (en) | Fume meter of exhaust gases of diesel engine | |
| JPH04331324A (en) | Measuring apparatus of flow rate of exhaust gas | |
| JPH0320619A (en) | Hot-wire type air flowmeter | |
| JP3013873B2 (en) | White smoke measurement method | |
| FAGAN, JR et al. | L2F and LDV velocimetry measurement and analysis of the 3-D flow field in a centrifugal compressor | |
| Doll et al. | Pressure, temperature and velocity distributions behind an NGV cascade by filtered Rayleigh scattering measurements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |