JPH0121343B2 - - Google Patents

Info

Publication number
JPH0121343B2
JPH0121343B2 JP13521882A JP13521882A JPH0121343B2 JP H0121343 B2 JPH0121343 B2 JP H0121343B2 JP 13521882 A JP13521882 A JP 13521882A JP 13521882 A JP13521882 A JP 13521882A JP H0121343 B2 JPH0121343 B2 JP H0121343B2
Authority
JP
Japan
Prior art keywords
light
spray flow
screen
image sensor
shape
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
Application number
JP13521882A
Other languages
Japanese (ja)
Other versions
JPS5925075A (en
Inventor
Hiroshi Hatsuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Corp
Original Assignee
Diesel Kiki Co Ltd
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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP13521882A priority Critical patent/JPS5925075A/en
Publication of JPS5925075A publication Critical patent/JPS5925075A/en
Publication of JPH0121343B2 publication Critical patent/JPH0121343B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus

Description

【発明の詳細な説明】 本発明は内燃機関燃料噴射弁等から噴射された
燃料油等の噴霧流の断面形状を表示するノズル噴
霧流形状表示装置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nozzle spray flow shape display device that displays the cross-sectional shape of a spray flow of fuel oil or the like injected from an internal combustion engine fuel injection valve or the like.

内燃機関燃料噴射弁等において、その特性の良
否判断のために噴霧流の形状の観測が行われる。
この場合における従来の方法は燃料噴射と同期し
発光するストロボ発光器等を用いて噴霧流を直接
観測する方法であつた。
2. Description of the Related Art In internal combustion engine fuel injection valves and the like, the shape of the spray flow is observed in order to judge whether the characteristics are good or bad.
The conventional method in this case is to directly observe the spray flow using a strobe light emitting device or the like that emits light in synchronization with the fuel injection.

しかし上記した如き従来の方法によるときは噴
霧流形状の側面からの観測のみが可能であつて、
燃料油噴射方向における形状、噴射角度、噴霧流
の割れ具合、傾き等が観測し得るが、断面方向に
おける噴霧流の形状については観測できない欠点
があつた。
However, when using the conventional method as described above, it is only possible to observe the spray flow shape from the side.
Although the shape in the fuel oil injection direction, the injection angle, the degree of breakage of the spray flow, the inclination, etc. can be observed, there was a drawback that the shape of the spray flow in the cross-sectional direction could not be observed.

本発明は上記にかんがみなされたもので、ノズ
ル噴霧流の横断面形状を表示することができるノ
ズル噴霧流形状表示装置を提供することを目的と
する。
The present invention has been conceived in view of the above, and an object of the present invention is to provide a nozzle spray flow shape display device that can display the cross-sectional shape of a nozzle spray flow.

この目的は本発明によれば、光源からの光をノ
ズルからの噴霧流の進行方向と交差するように平
行光線からなる膜状の光スクリーンに変換する光
スクリーン変換装置と、前記噴霧流による前記光
スクリーンの切断面を含む光スクリーン部分を撮
像するイメージセンサと、該イメージセンサの出
力信号が供給されて前記切断面の形状に対応した
形状の表示を行なう表示装置とを備え、前記表示
装置により噴霧流の断面形状を表示することによ
り達成される。
According to the present invention, this object is to provide a light screen conversion device for converting light from a light source into a film-like light screen consisting of parallel light rays so as to intersect the traveling direction of a spray flow from a nozzle, and an image sensor that images an optical screen portion including a cut surface of the optical screen; and a display device that is supplied with an output signal of the image sensor and displays a shape corresponding to the shape of the cut surface; This is achieved by displaying the cross-sectional shape of the spray stream.

以下、本発明を実施例により説明する。 The present invention will be explained below using examples.

図は本発明の一実施例の構成を示すブロツク図
である。
The figure is a block diagram showing the configuration of an embodiment of the present invention.

1はたとえば内燃機関用の燃料噴射弁である。
3はたとえばHe―Neレーザ等からなる光源であ
る。4は光源3から入射レーザ光を平行光線から
なる膜状の光スクリーンに変換する光スクリーン
変換装置であつて、たとえば光源3からのレーザ
光を受けて平行光線に変換するコリメートレンズ
5とコリメートレンズ5から投射された光が入射
されるスリツト板6とから構成してある。光源3
からのレーザ光は光スクリーン変換装置4に入射
し、光スクリーン変換装置4から投射される光ス
クリーン7が燃料噴射弁1の軸心と交差するよう
に光スクリーン変換装置4が設置してある。本実
施例においては燃料噴射弁1の軸心と光スクリー
ン7とが直交するように光スクリーン変換装置4
が設置してある。
1 is, for example, a fuel injection valve for an internal combustion engine.
3 is a light source made of, for example, a He--Ne laser. Reference numeral 4 denotes a light screen conversion device that converts the incident laser light from the light source 3 into a film-like light screen made of parallel light rays, and includes, for example, a collimating lens 5 and a collimating lens that receive the laser light from the light source 3 and convert it into parallel light rays. and a slit plate 6 into which the light projected from 5 is incident. light source 3
The laser light from the optical screen converting device 4 enters the optical screen converting device 4, and the optical screen converting device 4 is installed so that the optical screen 7 projected from the optical screen converting device 4 intersects the axis of the fuel injection valve 1. In this embodiment, the optical screen conversion device 4 is arranged such that the axis of the fuel injection valve 1 and the optical screen 7 are perpendicular to each other.
has been installed.

一方、8は燃料噴射弁1からの噴霧流が光スク
リーン7を横切る部分すなわち噴霧流による光ス
クリーン7の切断面を含む所定の面積部分を光学
系を介して撮像するイメージセンサであつて、イ
メージセンサ8はたとえば撮像素子として8個で
一行を構成しかつ8個で一列を構成して入射光を
光電変換する密接して配置された64個の光電変換
素子が設けてある。イメージセンサ8は噴霧流に
よる光スクリーン7の切断面を所定角度方向から
撮像するように設けてあつて、イメージセンサ8
には楕円断面入射光を円断面入射光に変換する円
筒レンズ9を介して前記切断面を撮像するように
してある。円筒レンズ9を介して撮像するように
したのは前記切断面を正面からイメージセンサ8
によつて撮像することができないためであつて、
噴霧流の断面外形が円状であつてもイメージセン
サ8は斜めに前記切断面を撮像するため楕円にみ
えることになるためである。
On the other hand, 8 is an image sensor that images, through an optical system, a predetermined area including the portion where the spray flow from the fuel injection valve 1 crosses the light screen 7, that is, the cut surface of the light screen 7 caused by the spray flow. The sensor 8 is provided with, for example, 64 closely spaced photoelectric conversion elements each serving as an image pickup element, with eight elements forming one row and eight elements forming one column for photoelectrically converting incident light. The image sensor 8 is provided so as to image the cut surface of the light screen 7 caused by the spray flow from a predetermined angle direction.
In this case, the cut plane is imaged through a cylindrical lens 9 that converts the incident light of an elliptical section into the incident light of a circular section. The reason why the image is taken through the cylindrical lens 9 is that the image sensor 8 captures the cut surface from the front.
This is because it cannot be imaged by
This is because even if the cross-sectional shape of the spray flow is circular, the image sensor 8 images the cut surface obliquely, so that it appears to be an ellipse.

一方10はイメージセンサ8を構成する光電変
換素子のそれぞれに対応させて8行8列に配列し
た64個の発光ダイオードと、イメージセンサ8を
構成する受光素子のそれぞれの出力信号を各別に
増幅してイメージセンサ8のそれぞれの光電変換
素子に対応する発光ダイオードを駆動するトラン
ジスタとからなる表示装置であり、イメージセン
サ8の各光電変換素子の出力を並列方式で出力し
て表示装置10で表示するように構成してある。
On the other hand, 10 amplifies the output signals of 64 light emitting diodes arranged in 8 rows and 8 columns corresponding to each of the photoelectric conversion elements constituting the image sensor 8 and the light receiving elements constituting the image sensor 8. This is a display device consisting of a transistor that drives a light emitting diode corresponding to each photoelectric conversion element of the image sensor 8, and the output of each photoelectric conversion element of the image sensor 8 is outputted in parallel and displayed on the display device 10. It is structured as follows.

以上の如く構成した本発明の一実施例におい
て、図示しない燃料噴射ポンプから燃料噴射弁1
に燃料油を圧送することにより燃料噴射弁1の針
弁は移動して、燃料噴射弁1から燃料油が噴霧さ
れる。この噴霧による噴霧流は光スクリーン7を
通過して進行する。この噴霧流による光スクリー
ン7の切断面形状、すなわち噴霧流の光スクリー
ン7の位置における断面形状はイメージセンサ8
により検出され、イメージセンサ8の出力により
断面形状に対応して、表示装置10の発光ダイオ
ードが発光し、噴霧流の断面形状が表示装置10
に表示される。また円筒レンズ9を省略しても噴
霧流の断面形状に対応した形状の表示が表示装置
10によつて行なえる。
In one embodiment of the present invention configured as described above, the fuel injection valve 1 is connected to the fuel injection pump (not shown).
By force-feeding fuel oil, the needle valve of the fuel injection valve 1 moves, and the fuel oil is sprayed from the fuel injection valve 1. The atomized stream of this atomization passes through the optical screen 7 and advances. The cross-sectional shape of the light screen 7 due to this spray flow, that is, the cross-sectional shape of the spray flow at the position of the light screen 7 is determined by the image sensor 8.
, the light emitting diode of the display device 10 emits light according to the cross-sectional shape based on the output of the image sensor 8, and the cross-sectional shape of the spray flow is detected by the display device 10.
will be displayed. Further, even if the cylindrical lens 9 is omitted, the display device 10 can display a shape corresponding to the cross-sectional shape of the spray flow.

したがつて、表示装置10を構成する発光ダイ
オードが呈する形状を観測することにより燃料噴
射弁1からの噴射流の断面形状を知ることがで
き、燃料噴射弁1の良否を判断することができ
る。
Therefore, by observing the shape exhibited by the light emitting diodes constituting the display device 10, the cross-sectional shape of the injection flow from the fuel injection valve 1 can be known, and the quality of the fuel injection valve 1 can be determined.

また、上記した本発明の一実施例において、燃
料噴射弁1からの燃料の噴霧流により光スクリー
ン変換装置4、円筒レンズ9が汚れるのを防止す
るために、スクリーン変換装置4と噴霧流との間
および円筒レンズ9と噴霧流との間に空気カーテ
ンを形成しておけば、保守も容易である。
In addition, in the embodiment of the present invention described above, in order to prevent the optical screen conversion device 4 and the cylindrical lens 9 from being contaminated by the fuel spray flow from the fuel injection valve 1, the screen conversion device 4 and the spray flow are Maintenance is also easy if an air curtain is formed between the cylindrical lens 9 and the spray stream.

なお、以上説明した本発明の一実施例において
内燃機関用の燃料噴射弁1からの噴霧流の断面形
状を表示する場合を例示して説明した。内燃機関
用の燃料噴射弁1の場合、噴霧流の断面積は余り
大きくないため、イメージセンサ8は光電変換素
子を8行8列に密接して構成したが、この程度で
充分な分解能を得ることができる。噴霧流の断面
積が大きい場合にはイメージセンサ8の光電変換
素子の数を増加すればよい。またこの場合、表示
装置10の発光ダイオードの数も増加することは
勿論である。またさらにイメージセンサ8に従来
から使用される工業用テレビジヨンカメラを用
い、表示装置10にモニタテレビジヨン受像機を
用いて、噴霧流の光スクリーン7上における断面
形状をモニタテレビジヨン受像機で映してもよ
い。
In the above-described embodiment of the present invention, the case where the cross-sectional shape of the spray flow from the fuel injection valve 1 for an internal combustion engine is displayed has been described as an example. In the case of the fuel injection valve 1 for an internal combustion engine, the cross-sectional area of the spray flow is not very large, so the image sensor 8 is configured with photoelectric conversion elements closely arranged in 8 rows and 8 columns, but sufficient resolution can be obtained with this level. be able to. When the cross-sectional area of the spray flow is large, the number of photoelectric conversion elements of the image sensor 8 may be increased. Furthermore, in this case, it goes without saying that the number of light emitting diodes in the display device 10 also increases. Furthermore, a conventionally used industrial television camera is used as the image sensor 8, and a monitor television receiver is used as the display device 10, so that the cross-sectional shape of the spray flow on the optical screen 7 is displayed on the monitor television receiver. It's okay.

以上説明した如く本発明によれば噴霧流の進行
軸に交差する光スクリーンを形成し、噴霧流によ
る光スクリーンの切断面の形状をイメージセンサ
で検出し、イメージセンサの出力を表示するよう
にしたために、従来観測することができなかつた
噴霧流の横断面形状を観測することができる。
As explained above, according to the present invention, a light screen is formed that intersects with the traveling axis of the spray flow, the shape of the cut surface of the light screen by the spray flow is detected by an image sensor, and the output of the image sensor is displayed. In addition, it is possible to observe the cross-sectional shape of the spray flow, which was previously impossible to observe.

また、噴霧流の横断面形状の観測のために噴霧
流を乱すこともなく、かつ観測は静的に行なえる
ため動的な不都合は生ぜず、検出、表示部分の消
耗もない。
In addition, the spray flow is not disturbed in order to observe the cross-sectional shape of the spray flow, and since the observation can be performed statically, there is no dynamic inconvenience, and there is no wear and tear on the detection and display parts.

【図面の簡単な説明】[Brief explanation of drawings]

図は本発明の一実施例を示すブロツク図。 1……燃料噴射弁、3……光源、4……光スク
リーン変換装置、5……コリメートレンズ、9…
…スリツト板、7……光スクリーン、8……イメ
ージセンサ、10……表示装置。
The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Fuel injection valve, 3...Light source, 4...Light screen conversion device, 5...Collimating lens, 9...
...Slit plate, 7... Optical screen, 8... Image sensor, 10... Display device.

Claims (1)

【特許請求の範囲】[Claims] 1 光源からの光をノズルからの噴霧流の進行方
向と交差するように平行光線からなる膜状の光ス
クリーンに変換する光スクリーン変換装置と、前
記噴霧流による前記光スクリーンの切断面を含む
光スクリーン部分を撮像するイメージセンサと、
該イメージセンサの出力信号が供給されて前記切
断面の形状に対応した形状の表示を行なう表示装
置とを備えてなることを特徴とするノズル噴霧流
形状表示装置。
1. A light screen conversion device that converts light from a light source into a film-like light screen made up of parallel light rays so as to intersect the traveling direction of a spray flow from a nozzle, and a light screen that includes a cut surface of the light screen by the spray flow. An image sensor that images the screen part,
A nozzle spray flow shape display device comprising: a display device to which an output signal of the image sensor is supplied and displays a shape corresponding to the shape of the cut surface.
JP13521882A 1982-08-04 1982-08-04 Display device for nozzle spray shape Granted JPS5925075A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13521882A JPS5925075A (en) 1982-08-04 1982-08-04 Display device for nozzle spray shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13521882A JPS5925075A (en) 1982-08-04 1982-08-04 Display device for nozzle spray shape

Publications (2)

Publication Number Publication Date
JPS5925075A JPS5925075A (en) 1984-02-08
JPH0121343B2 true JPH0121343B2 (en) 1989-04-20

Family

ID=15146586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13521882A Granted JPS5925075A (en) 1982-08-04 1982-08-04 Display device for nozzle spray shape

Country Status (1)

Country Link
JP (1) JPS5925075A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60104205A (en) * 1983-11-10 1985-06-08 Nippon Denso Co Ltd Method and device for measuring shape of jet body
JPH0629853B2 (en) * 1985-03-19 1994-04-20 三井金属鉱業株式会社 Light scattering image information analyzer
DE602005016942D1 (en) * 2005-11-15 2009-11-12 Continental Automotive Gmbh Method and device for testing an injection valve
CN110118143B (en) * 2018-02-07 2020-08-28 广州汽车集团股份有限公司 Spray drop point testing device and method

Also Published As

Publication number Publication date
JPS5925075A (en) 1984-02-08

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