JPH0247477Y2 - - Google Patents
Info
- Publication number
- JPH0247477Y2 JPH0247477Y2 JP89285U JP89285U JPH0247477Y2 JP H0247477 Y2 JPH0247477 Y2 JP H0247477Y2 JP 89285 U JP89285 U JP 89285U JP 89285 U JP89285 U JP 89285U JP H0247477 Y2 JPH0247477 Y2 JP H0247477Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- injection
- paper
- detection
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 description 37
- 238000002347 injection Methods 0.000 description 29
- 239000007924 injection Substances 0.000 description 29
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000000975 dye Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、電子制御燃料噴射式内燃機関に装着
されるフユーエルインジエクタからの燃料噴射状
態等を検出するものに関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an apparatus for detecting the state of fuel injection from a fuel injector installed in an electronically controlled fuel injection type internal combustion engine.
〈従来の技術〉
電子制御燃料噴射式内燃機関においては、電磁
式フユーエルインジエクタを設け、運転条件によ
り設定された噴射量を得るべく所定のタイミング
で所定時間フユーエルインジエクタを運転駆動し
て燃料噴射を行つている。<Prior art> In an electronically controlled fuel injection type internal combustion engine, an electromagnetic fuel injector is provided, and the fuel injector is driven at a predetermined timing for a predetermined period of time to obtain an injection amount set according to operating conditions. Performing fuel injection.
この種のフユーエルインジエクタ、得に吸気絞
り弁上流のスロツトルボデイに１個のフユーエル
インジエクタを設けるシングルポイントインジエ
クシヨン式のフユーエルインジエクタの場合、燃
料の噴射角度、パターン（分散状態）はエンジン
性能、例えば燃料の各気筒への分配特性、アイド
リング時の安定性及びHC排出特性、加減速性能
等に大きく作用する。 In the case of this type of fuel injector, especially a single point injection type fuel injector in which one fuel injector is installed in the throttle body upstream of the intake throttle valve, the fuel injection angle and pattern (dispersion state) has a large effect on engine performance, such as fuel distribution characteristics to each cylinder, stability during idling, HC emission characteristics, acceleration/deceleration performance, etc.
このため、現在は室内において吊り下げ支持し
たフユーエルインジエクタからの燃料噴射状態を
側方からカメラで撮影することにより噴射状態の
検出を行つているが、後述するように多くの問題
がある。 For this reason, the fuel injection state is currently detected by photographing the fuel injection state from the fuel injector suspended and supported indoors from the side with a camera, but this method has many problems as described below.
側方からの撮影のため、噴射状態の外郭がわか
るのみで、一番重要な噴射パターンを検出するこ
とができない。 Because the image is taken from the side, only the outline of the injection state can be seen, but the most important injection pattern cannot be detected.
準備、撮影、撤去に長時間（７〜８時間）を要
し、その上、現像、プリント、解析作業にさらに
時間を要し、通常２日掛りとなる。 It takes a long time (7 to 8 hours) to prepare, photograph, and remove, and on top of that, it takes even more time to develop, print, and analyze, and it usually takes two days.
カメラのセツテイングや撮影のタイミングに神
経を使う。 Be careful when setting up your camera and when taking pictures.
噴射状態の時、室内の吸・排気ブロアーを停止
して撮影を行うため、ガソリン（燃料）が充満
し、この状態でストロボを焚いて撮影しなければ
ならず危険な状態にある。 When the camera is in the injection mode, the indoor intake and exhaust blowers are stopped to take pictures, so the camera is filled with gasoline (fuel), which creates a dangerous situation in which it is necessary to fire the flash and take pictures.
本考案は、このような従来の問題点に着目して
なされたもので、極めて簡単かつ短時間の作業
で、しかも、最も知りたい噴射パターンを正確に
促えることができるようにした噴射液の噴射状態
検出用紙を提供することを目的とする。 This invention was developed by focusing on these conventional problems, and it is an extremely simple and short-time work to create an injection liquid that can accurately prompt the injection pattern that you want to know the most. The purpose of the present invention is to provide an ejection state detection paper.
〈問題点を解決するための手段〉
このため、本考案は、用紙の表面に染色浸透探
傷剤を層状に被着すると共に、その上から前記染
色浸透探傷剤の溶荷を反応して現像作用を有する
現像剤を層状に被着した構成の噴射状態検出用紙
とする。<Means for Solving the Problems> For this reason, the present invention applies a dye penetrant flaw detection agent to the surface of paper in a layered manner, and reacts a solvent of the dye penetrant flaw detection agent on top of the dye penetrant flaw detection agent to perform a developing action. The ejection state detection paper has a structure in which a layer of developer having the following properties is applied.
〈作用〉
かかる検出用紙を用いれば、フユーエルインジ
エクタ等の下方に検出用紙を置いて噴射させる
と、検出用紙に付着した噴射液により付着部分の
染色浸透探傷剤層が溶け出して現像剤層に浸透
し、該浸透部分が現像剤により濃く現像保持され
るため、噴射状態を詳細に知ることができる。<Function> If such a detection paper is used, when the detection paper is placed below a fuel injector and ejected, the dyed penetrant flaw detection agent layer at the attached portion will melt due to the sprayed liquid attached to the detection paper, and the developer layer will be dissolved. Since the permeated portion is maintained in a deep state by the developer, it is possible to know the spraying state in detail.
〈実施例〉
以下、本考案の実施例を第１図及び第２図に基
づいて説明する。<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2.
第１図は、検出用紙の断面構造を示し、比較的
液体浸透性の良い用紙（コピー用紙等と同質でよ
い）１の片側表面に染色浸透探傷剤をスプレーで
吹き付けて染色浸透探傷剤層２を被着する。 Figure 1 shows the cross-sectional structure of the detection paper.A dyed penetrant testing agent is sprayed onto one side surface of paper 1 (which may be of the same quality as copy paper) which has relatively good liquid permeability, and a dyed penetrant testing agent layer 2 is shown. be coated with.
ここで、染色浸透探傷剤は、赤色の有機溶剤か
らなり、金属材料の探傷用として使用されている
ものを用いればよい。 Here, the dye penetrant flaw detection agent may be one made of a red organic solvent and used for flaw detection of metal materials.
この赤色を有した染色浸透探傷剤層２の上から
染色浸透剤とペアで使用される現像剤をスプレー
で吹き付けた後、一度白い現像粉末を拭き取り、
再度現像剤を吹き付けて現像剤層３を被着する。
この状態で検出用紙表面は、赤色の染色浸透探傷
剤層２と白色の現像剤層３とにより薄いピンク色
をしている。 After spraying the developer used in combination with the dye penetrant on the dye penetrant flaw detection agent layer 2 having red color, once the white developer powder is wiped off,
The developer layer 3 is deposited by spraying the developer again.
In this state, the surface of the detection paper has a pale pink color due to the red dye penetrant flaw detection agent layer 2 and the white developer layer 3.
このようにして形成された検出用紙Ｐを第２図
に示すように台１１上に水平に載置し、該検出用
紙Ｐの上方に試験用のフユーエルインジエクタ１
２を測定用治具１３を取り付けて下方に臨ませ、
噴孔１２ａと、検出用紙Ｐ紙面とを所定の距離
（例えば50mm）にセツトする。１４，１５は、
夫々治具１３を介したフユーエルインジエクタ１
２に接続される燃料供給管及び燃料流出管であ
る。 The detection paper P formed in this way is placed horizontally on a table 11 as shown in FIG. 2, and a test fuel injector 1 is placed above the detection paper P.
2 with the measurement jig 13 attached and facing downward,
The nozzle hole 12a and the surface of the detection paper P are set at a predetermined distance (for example, 50 mm). 14 and 15 are
Fuel injector 1 via respective jigs 13
2, a fuel supply pipe and a fuel outflow pipe are connected to the fuel supply pipe and the fuel outflow pipe.
この状態で、フユーエルインジエクタ１２を駆
動して燃料を噴射させ、該噴射燃料を検出用紙に
付着させる。 In this state, the fuel injector 12 is driven to inject fuel, and the injected fuel is deposited on the detection paper.
すると、燃料付着部分の染色浸透探傷剤層２が
溶かされて赤く染色し、かつ、探傷剤と現像剤層
３の現像剤とが反応して赤色に濃化した状態で現
像保持される。第３図は所定のフユーエルインジ
エクタ１２を用いて１回当りの噴射時間を1.5
（ms）にセツトし、６回噴射させた時に検出用紙
Ｐに現像された噴射パターンを示し、第４図は、
同一のフユーエルインジエクタ１２を用いて１回
当りのの噴射時間を1.2（ms）にセツトし、９回
噴射させた時に現像された噴射パターンを示す。 Then, the dye penetrant flaw detection agent layer 2 in the fuel-adhered portion is melted and dyed red, and the flaw detection agent and the developer in the developer layer 3 react to form a concentrated red color, which is retained as a developed state. Fig. 3 shows an injection time of 1.5 times per injection using a predetermined fuel injector 12.
(ms) and shows the ejection pattern developed on the detection paper P when ejecting six times.
The injection pattern developed when the same fuel injector 12 was used and the injection time per injection was set to 1.2 (ms) and nine injections were performed is shown.
このように、噴射燃料の横断面の分布状態を詳
細に促えることができ、環状をなす噴射パターン
の中央部を結んで得られる円Ｏと噴孔までの高さ
ｈとにより噴射角度θを高精度に求められる。 In this way, the distribution state of the cross section of the injected fuel can be determined in detail, and the injection angle θ can be calculated using the circle O obtained by connecting the central part of the annular injection pattern and the height h to the nozzle hole. High precision is required.
また、検出に際しての準備も燃料流量試験に用
いる治具を利用して１人で簡単に行え、数分で検
出パターンを取得することができ、噴射角度、分
布状態をその場で容易に把握できる。 In addition, preparation for detection can be easily done by one person using the jig used for fuel flow tests, the detection pattern can be acquired in a few minutes, and the injection angle and distribution state can be easily understood on the spot. .
さらに、検出作業を明るい部屋で通常の燃料噴
射測定と同様に行えばよく、極めて安全に作業で
きる。 Furthermore, the detection work can be performed in a bright room in the same way as normal fuel injection measurement, making it extremely safe.
検出用紙も極く安価に製作でき、コストメリツ
トも大きい。 Detection paper can also be produced at a very low cost, and there are great cost benefits.
尚、現像剤層３を被着しない場合、瞬間的には
良好な噴射パターンが得られるが、燃料が浸透探
傷剤層２に滲んで薄く拡げられ、短時間で蒸発し
てパターンを消滅させてしまう。 Note that when the developer layer 3 is not deposited, a good spray pattern can be obtained momentarily, but the fuel oozes into the penetrant layer 2 and spreads thinly, and evaporates in a short time, causing the pattern to disappear. Put it away.
即ち、現像剤は、燃料の滲みを抑制しつつ噴射
パターンを現像保持する作用を有する。 That is, the developer has the function of developing and maintaining the injection pattern while suppressing the bleeding of the fuel.
〈考案の効果〉
以上説明したように、本考案の検出用紙を使用
すれば内燃機関のフユーエルインジエクタ等から
噴射される噴射液の噴射状態を極めて容易、短時
間でしかも詳細に検出することができ、検出作業
も安全に行え、用紙製造コストも安価で経済的に
も有利であるなど種々の優れた特長を有するもの
である。<Effects of the invention> As explained above, by using the detection paper of the invention, the injection state of the injection fluid injected from the fuel injector of an internal combustion engine can be detected extremely easily, in a short time, and in detail. It has various excellent features, such as being able to perform detection work safely, and being economically advantageous as the paper manufacturing cost is low.
第１図は本考案の一実施例に係る噴射状態検出
用紙の断面図、第２図は同上の検出用紙を使用し
てフユーエルインジエクタの燃料噴射状態を検出
するときの状態を示す正面図、第３図及び第４図
は夫々同一のフユーエルインジエクタの異なる噴
射条件下において第１図に示した検出用紙で得ら
れる噴射パターンを示す図である。
１……用紙、２……染色浸透探傷剤層、３……
現像剤層。
FIG. 1 is a sectional view of an injection state detection sheet according to an embodiment of the present invention, and FIG. 2 is a front view showing the state when the same detection sheet is used to detect the fuel injection state of a fuel injector. , 3 and 4 are views showing ejection patterns obtained with the detection paper shown in FIG. 1 under different ejection conditions from the same fuel injector, respectively. 1...paper, 2...dyed penetrant testing agent layer, 3...
developer layer.
Claims (1)
と共に、その上から前記染色浸透探傷剤の溶液と
反応して現像作用を有する現像剤を層状に被着し
てなることを特徴とする噴射液の噴射状態検出用
紙。 A jetting method characterized in that a dye penetrant flaw detection agent is applied in a layer on the surface of paper, and a layer of a developer that reacts with a solution of the dye penetrant flaw detection agent and has a developing effect is applied thereon. Liquid ejection status detection paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP89285U JPH0247477Y2 (en) | 1985-01-10 | 1985-01-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP89285U JPH0247477Y2 (en) | 1985-01-10 | 1985-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61118051U JPS61118051U (en) | 1986-07-25 |
| JPH0247477Y2 true JPH0247477Y2 (en) | 1990-12-13 |
Family
ID=30473136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP89285U Expired JPH0247477Y2 (en) | 1985-01-10 | 1985-01-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247477Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3454166B2 (en) * | 1998-09-07 | 2003-10-06 | 株式会社豊田中央研究所 | Liquid injection volume distribution measuring device |
| DE102013009429A1 (en) * | 2013-06-05 | 2014-12-24 | Man Diesel & Turbo Se | Apparatus for testing a fuel injector or a fuel injector |
-
1985
- 1985-01-10 JP JP89285U patent/JPH0247477Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61118051U (en) | 1986-07-25 |
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