JPS61217726A - Observation method for combustion state of internal-combustion engine - Google Patents

Observation method for combustion state of internal-combustion engine

Info

Publication number
JPS61217726A
JPS61217726A JP5910885A JP5910885A JPS61217726A JP S61217726 A JPS61217726 A JP S61217726A JP 5910885 A JP5910885 A JP 5910885A JP 5910885 A JP5910885 A JP 5910885A JP S61217726 A JPS61217726 A JP S61217726A
Authority
JP
Japan
Prior art keywords
light
combustion chamber
combustion
optical fibers
combustion engine
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
Application number
JP5910885A
Other languages
Japanese (ja)
Other versions
JP2529666B2 (en
Inventor
Tadahiro Ozu
小津 忠弘
Nobuyoshi Nakayama
信義 中山
Tatsuo Fujii
藤井 龍雄
Akira Akasaka
赤坂 昭
Yoshiyuki Iwashita
義之 岩下
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.)
Machida Endoscope Co Ltd
Kawasaki Heavy Industries Ltd
Original Assignee
Machida Endoscope Co Ltd
Kawasaki Heavy Industries 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 Machida Endoscope Co Ltd, Kawasaki Heavy Industries Ltd filed Critical Machida Endoscope Co Ltd
Priority to JP60059108A priority Critical patent/JP2529666B2/en
Publication of JPS61217726A publication Critical patent/JPS61217726A/en
Application granted granted Critical
Publication of JP2529666B2 publication Critical patent/JP2529666B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Testing Of Engines (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To observe a combustion state, by distributing the end face of an optical fiber on the inner wall surface of a combustion chamber of the internal combustion engine to detect light from various optical fibers with a light receiving element. CONSTITUTION:A lighting unit 39 contains a light emitting element 43 to be connected to an optical fiber bundle 42 having a bundle irradiation optical fibers 35 while a camera unit 38 contains light receiving elements A1-An to be connected separately to light receiving optical fibers 36 and one end face of the optical fibers 35 is set in the combustion chamber through a mounting hole. In the internal combustion engine of such a type, the inside of the combustion chamber is irradiated by the fiber 35 and the light intensity distribution in the combustion chamber is stored into a memory 46 at time intervals with fibers 36 each time. The observation of a spray or combustion state of a fuel in the combustion chamber can be done by surveying light distribution each time.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、内燃機関における燃焼状態などを観測する方
法に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for observing combustion conditions in an internal combustion engine.

背景技術 典型的な先行技術は、日本機械学会関西部第122回講
習会教材@90頁に記載されており、これは第5図に示
されている。この先行技術では、実際の内燃機関の燃焼
室内の現象を撮影できるように模型化したものである。
BACKGROUND ART A typical prior art is described in the Japan Society of Mechanical Engineers Kansai 122nd Seminar Materials @ page 90, and this is shown in FIG. In this prior art, a model is created so that phenomena inside the combustion chamber of an actual internal combustion engine can be photographed.

シリングヘッド2お上りピストン3には、それぞれ嵌合
孔2a、3aが形成されている。この嵌合孔2a、3m
には、透光性部材4,5がそれぞれ嵌め込まれる。この
透光性部材4,5は、たとえば石英がラス製である。
Fitting holes 2a and 3a are formed in the upward piston 3 of the shilling head 2, respectively. This fitting hole 2a, 3m
Translucent members 4 and 5 are respectively fitted into the . The translucent members 4 and 5 are made of quartz lath, for example.

シリングヘッド2の(III’!!にはI壁を貫通して
通光ffll7が設けられており、この通光fiI11
はピストン3の側壁に形成された長孔8を挿通している
。したがってピストン3は、通光tIi7を長孔8に挿
通した状態で長孔8のILtlる方向(第5図の上下方
向)に往復移動可能である1通光ff17の一端部には
反射鏡9が固定されており、f1端部には結像用レンズ
10が固定されている。パルス・レーザなどによって実
現される光源からの光は、ビームスプリッタ11によっ
て部分的に反射され、透光性部材4、燃焼室12お上び
透光性部材5を介して前記反射!lt9によって反射さ
れる0反射鏡9によって反射された光は通光部7内を進
行し、結像用レンズ10によって撮像素子13上に結像
される。
A light passing fiI11 is provided in (III'!! of the Schilling head 2) passing through the I wall.
is inserted through a long hole 8 formed in the side wall of the piston 3. Therefore, the piston 3 is capable of reciprocating in the direction of ILtl of the elongated hole 8 (up and down direction in FIG. 5) with the light passing tIi7 inserted into the elongated hole 8. is fixed, and an imaging lens 10 is fixed to the f1 end. Light from a light source realized by a pulsed laser or the like is partially reflected by the beam splitter 11, and is reflected through the light-transmitting member 4, the combustion chamber 12, and the light-transmitting member 5! The light reflected by the 0 reflecting mirror 9 travels through the light passage section 7 and is imaged on the image sensor 13 by the imaging lens 10.

またこのとき燃焼室12内にはメタンがスが噴射弁14
から噴流される。光源からのビームスプリッタ11によ
って反射される光取外の残余の光はそのまま直進し、反
射鏡15によって反射され、前記撮像素子13上に達す
る。
Also, at this time, methane gas is present in the combustion chamber 12 at the injection valve 14.
It is jetted from. The remaining light reflected by the beam splitter 11 from the light source continues straight, is reflected by the reflecting mirror 15, and reaches the image pickup device 13.

このようにして、燃焼室12内のエタンゲスのいわゆる
2重露光法によるホログラム再生像を得るようにしてい
る。
In this way, a hologram reconstructed image of the ethanges in the combustion chamber 12 is obtained by the so-called double exposure method.

発明が解決しようとする問題点 このような先行技術では、シリンダヘッド2の側壁に設
けられた通光vi7が挿通するための長孔8がピストン
3に設けられなくてはならず、またシリンダヘッド2お
上りピストン3には嵌合孔2a、3aが形成されて、透
光性部材4,5が嵌込まれたりしているために強度が弱
く、実際の内燃11!!151の運転状況たとえば燃焼
室12内の内圧、温度、圧縮比などを必ずしも満足して
いるものではなり1という欠点があった。また撮影は高
速度カメラを使って高遠送りにして行なわれろために計
測時開が秒単位で終ってしまい現像時に時間がかかった
り、費用が多くかかるなどの問題があり、実際の内燃機
関における目視確認がすることができなかった。さらに
、燃焼室12内における燃料などの平面的な広がりがど
のような状態で行なわれるかを確認することができなか
った。
Problems to be Solved by the Invention In such prior art, the piston 3 must be provided with a long hole 8 through which the light passage vi7 provided on the side wall of the cylinder head 2 is inserted. 2. Fitting holes 2a, 3a are formed in the rising piston 3, and the translucent members 4, 5 are fitted into them, so the strength is weak and the actual internal combustion 11! ! The operating conditions of the combustion chamber 151, such as the internal pressure, temperature, and compression ratio of the combustion chamber 12, are not always satisfied. In addition, since photography is carried out using a high-speed camera and a high distance feed, there are problems such as the measurement time being completed in seconds, making it time consuming and expensive to develop, and visual inspection in an actual internal combustion engine. I couldn't confirm. Furthermore, it was not possible to confirm how the fuel and the like spread in a plane within the combustion chamber 12.

したがって本発明の目的は、内燃機関の燃焼室内におけ
る燃料の噴射状態および燃焼状態などを撮影することが
できるとともに、その燃料の噴射状態および燃焼状態な
どの広がりを観測することができるようにした内燃機関
の燃焼状態の観測方法を提供することである。
Therefore, an object of the present invention is to provide an internal combustion engine that can photograph the injection state and combustion state of fuel in the combustion chamber of an internal combustion engine, and also allows observation of the spread of the fuel injection state and combustion state. The object of the present invention is to provide a method for observing the combustion state of an engine.

問題点を解決するための手段 本発明は、内燃機関の燃焼室の内壁面に光ファイバーの
端面を分布して臨ませ、各党ファイバーからの光を受光
素子で検出して、各時刻毎の光の分布状況を観測するこ
とを特徴とする内燃機関の燃焼状態の観測方法である。
Means for Solving the Problems The present invention distributes the end faces of optical fibers facing the inner wall surface of the combustion chamber of an internal combustion engine, detects the light from each fiber with a light receiving element, and detects the light at each time. This is a method for observing the combustion state of an internal combustion engine, which is characterized by observing the distribution state.

作  用 本発明に従えば、内W&機関の燃焼室の内壁面に光ファ
イバの端面を分布して臨ませ、各光7アイパからの光を
受光素子で検出して各時刻毎の光の分布状況を観測する
ようにしたので、内燃機関の燃焼室内における燃焼状態
および各時刻毎の燃料などの広がりなどを観測すること
が可能となる。
According to the present invention, the end faces of the optical fibers are distributed and exposed to the inner wall surface of the combustion chamber of the inner W&engine, and the light from each of the seven eyepers is detected by a light receiving element to determine the distribution of light at each time. Since the situation is observed, it becomes possible to observe the combustion state in the combustion chamber of the internal combustion engine and the spread of fuel etc. at each time.

実施例 fjSi図は本発明を実施するための構成を示す簡略化
した断面図であり、第2図は第1図の切断面線■−■か
ら見た側面図である。シリングライナ17内にはピスト
ン18が往復移動可能に設けられでいる。ピストン18
の外周面にはピストンリング20が固着されており、こ
のピストンリング20はシリングライナ17の内周面と
接触している。シリングライナ17の上方には、シリン
ダヘッド21が固定されている。シリングライナ17、
ピストン18およびシリンダヘッド211こよって内燃
機関のV&焼室26が形成されている。シリングヘッド
21には燃料噴射弁22が固定されており、この燃料噴
射弁22には複数の噴射口23が燃焼室26に臨んで形
成されている。この噴射口23からは、仮想線24で示
すように燃料が燃焼室26内に噴射される。燃焼室26
の燃焼によるシリンダヘッド21の過熱を防ぐために、
シリンダヘッド21には冷却水が流過する冷却水通路2
5が形成されている。
Embodiment fjSi Figure is a simplified cross-sectional view showing a configuration for carrying out the present invention, and FIG. 2 is a side view taken from the section line ■--■ in FIG. A piston 18 is provided within the syringe liner 17 so as to be able to reciprocate. piston 18
A piston ring 20 is fixed to the outer peripheral surface of the cylinder liner 17, and this piston ring 20 is in contact with the inner peripheral surface of the cylinder liner 17. A cylinder head 21 is fixed above the cylinder liner 17. shilling liner 17,
The piston 18 and cylinder head 211 form a V& combustion chamber 26 of the internal combustion engine. A fuel injection valve 22 is fixed to the shilling head 21 , and a plurality of injection ports 23 are formed in the fuel injection valve 22 so as to face a combustion chamber 26 . From this injection port 23, fuel is injected into the combustion chamber 26 as shown by a virtual line 24. Combustion chamber 26
In order to prevent overheating of the cylinder head 21 due to combustion of
A cooling water passage 2 through which cooling water flows through the cylinder head 21
5 is formed.

シリンダヘッド21の燃焼室26に臨む面には、保持体
27が設けられている。この保持体27は平板状であっ
て、複数の噴射口23のうちの1つの噴射口23からの
燃料の噴射方向 (第1図および第2図における右方向
)に長く形成されている。
A holder 27 is provided on the surface of the cylinder head 21 facing the combustion chamber 26 . This holder 27 has a flat plate shape and is formed to be elongated in the direction of fuel injection from one of the plurality of injection ports 23 (rightward in FIGS. 1 and 2).

保持体27の長手方向の一端部側には、複数(この実施
例では2個)のボルト挿通孔33が穿設されている。こ
のボルト挿通孔33には取付はボルト28が挿通されて
、この取付ボルト28によって保持体27の一端部がシ
リンダヘッド21の燃焼室26に臨む面に固着される。
A plurality of (two in this embodiment) bolt insertion holes 33 are bored at one end of the holding body 27 in the longitudinal direction. A mounting bolt 28 is inserted through the bolt insertion hole 33, and one end of the holder 27 is fixed to the surface of the cylinder head 21 facing the combustion chamber 26 by the mounting bolt 28.

保持体27のボルト挿通孔33が形成される端部とは反
対側の他端部付近には、保持体27の一表面から垂直に
延びるねじ部29が突設される。このねじ部29は大略
円柱状であり、その外周面には外ねじが形成されている
。ねじ部29は、シリンダヘッド21に貫通して形成さ
れる取付孔2ia内に緩挿する。
A threaded portion 29 extending perpendicularly from one surface of the holder 27 is provided near the other end of the holder 27 opposite to the end where the bolt insertion hole 33 is formed. This threaded portion 29 has a generally cylindrical shape, and has an external thread formed on its outer peripheral surface. The threaded portion 29 is loosely inserted into a mounting hole 2ia formed through the cylinder head 21.

シリンダヘッド21の取付孔2ia内には箇条の取付部
材30が挿入される。取付部材30は、内ねじ部30a
 と、外ねじ部30bとを有する。取付部材30の外周
で内ねじff1S30 aと外ねじ部3obとの間には
円錐面31が形成されており、この円錐面31は取付部
材30を取付孔21aに挿入した状態で取付孔21aの
下方に形成された環状突起48の第1図における上面と
′fi接する。取付部材30の内ねじn30 aには、
保持体27に形成されたねじ部29が蝶着される。この
ようにして保持体27は、取付ボルト28および取付部
材30によってシリングヘッド21の燃焼室26に臨む
面に固定される。保持体27は耐熱材料からなり、たと
えば金属性である。保持体27をシリングヘッド21の
燃焼室2Gに臨む面に取付な状態で、保持体27は燃焼
室26内に突出しないように薄板状とされシリングヘッ
ド21に密着する。また保持体27に対応する形状を有
する凹所をシリングヘッド21に形成してその凹所に保
持体27を嵌め込んで固定するようにしてもよい。
A mounting member 30 is inserted into the mounting hole 2ia of the cylinder head 21. The mounting member 30 has an internal threaded portion 30a.
and an external threaded portion 30b. A conical surface 31 is formed on the outer periphery of the mounting member 30 between the internal thread ff1S30a and the external thread 3ob, and this conical surface 31 is formed in the mounting hole 21a when the mounting member 30 is inserted into the mounting hole 21a. It is in contact with the upper surface of the annular projection 48 formed below in FIG. The internal thread n30a of the mounting member 30 has
A threaded portion 29 formed on the holder 27 is hinged. In this way, the holding body 27 is fixed to the surface of the shilling head 21 facing the combustion chamber 26 by the mounting bolts 28 and the mounting members 30. The holder 27 is made of a heat-resistant material, for example, metal. When the holder 27 is attached to the surface of the shilling head 21 facing the combustion chamber 2G, the holder 27 is formed into a thin plate shape so as not to protrude into the combustion chamber 26, and is in close contact with the shilling head 21. Alternatively, a recess having a shape corresponding to the holder 27 may be formed in the shilling head 21, and the holder 27 may be fitted into the recess and fixed.

第3図は、保持体27付近の斜視図である。第1図およ
び第2図を同時に参照して、保持体27には軸方向(第
2図における上下方向)に対をなし、長手方向(第1図
および第2図における左右方向)に間隔をあけて複数対
(この実施例では6)の取付孔34が穿設されている。
FIG. 3 is a perspective view of the vicinity of the holding body 27. 1 and 2 at the same time, the holder 27 has a pair in the axial direction (vertical direction in FIG. 2) and an interval in the longitudinal direction (horizontal direction in FIG. 1 and 2). A plurality of pairs (six in this embodiment) of mounting holes 34 are provided.

fic手方同方向う取付孔34の列には、その取付孔3
4のそれぞれの列に沿って案内溝37が形成されている
。各取付孔34には光フアイバ対40が嵌り込む、光7
アイパ対40は、光照射用光7アイバ35と、受光用光
7フイパ36とが対となったものである。各光7アイバ
対40は、前記案内溝37内で耐熱性の接着剤などで固
着される。光フアイバ対40は一括して束にされ、保持
体27のねじ部29内を貫通して固定され、その後取付
部材30の軸孔50内を挿通する。*た光ファイバ討4
0が一括された光ファイバ束60は取付孔21a内で円
筒状の支持部材32によって支持される。支持部材32
は内ねじn32 aを有し、この内ねじ部32aは取付
部材30の外ねじ部30aと螺合する。光フアイバ対4
0が一括された光ファイバ東60は、その後、受光用光
7フイパ36を一括した光7アイパ束41と、光照射用
光7アイバ35を一括した光ファイバ束42とに分けら
れる。一方の光ファイバ束41は撮影装置38に接続さ
れ、他方の光7アイパ東42は照明装置39に接続され
る。
The row of mounting holes 34 in the same direction as the fic side has its mounting holes 3
Guide grooves 37 are formed along each row of 4. An optical fiber pair 40 is fitted into each mounting hole 34.
The eyeper pair 40 is a pair of a light 7 eyer 35 for light irradiation and a light 7 eyer 36 for light reception. Each pair of optical fibers 40 is fixed within the guide groove 37 with a heat-resistant adhesive or the like. The optical fiber pairs 40 are bundled together, passed through the threaded portion 29 of the holder 27 and fixed therein, and then passed through the shaft hole 50 of the mounting member 30. * Optical fiber test 4
The optical fiber bundle 60 in which the zeros are bundled is supported by a cylindrical support member 32 within the attachment hole 21a. Support member 32
has an internal thread n32a, and this internal threaded portion 32a is threadedly engaged with the external threaded portion 30a of the mounting member 30. fiber optic pair 4
The optical fiber east 60 bundled with 0's is then divided into a bundle of seven optical fibers 41 containing seven optical fibers 36 for receiving light and an optical fiber bundle 42 containing seven optical fibers 35 for light irradiation. One optical fiber bundle 41 is connected to the photographing device 38, and the other optical fiber bundle 42 is connected to the illumination device 39.

第4図は、撮影装W138および照明装置39の具体的
な構成を示すブロック図である。照明Vt139には、
光照射用光7アイバ35を一括した光7アイパ束42が
接続される発光素子43を含む。
FIG. 4 is a block diagram showing the specific configuration of the photographing device W138 and the illumination device 39. For lighting Vt139,
It includes a light emitting element 43 to which is connected a light 7 eyelid bundle 42 which is a bundle of light 7 eyelids 35 for light irradiation.

撮影装置38には、各受光用光ファイバ36が個別的に
接続される受光素子A1−八〇を含む。この受光素子A
1〜Anは、撮影装r1138の処理回路45に接続さ
れている。処理回路45には、受光素子A1〜Anから
の受光強度をストアするメモリ46が接続されている。
The photographing device 38 includes a light receiving element A1-80 to which each light receiving optical fiber 36 is individually connected. This light receiving element A
1 to An are connected to the processing circuit 45 of the photographing device r1138. A memory 46 is connected to the processing circuit 45 to store the intensity of light received from the light receiving elements A1 to An.

前記光照射用光7アイパ35の一端面は取付孔34を介
して燃焼室26内に臨んでおり、発光素子43を能動化
することによって、燃焼室26内は光照射用光7アイバ
35によって照射される。光照射用光ファイバ35の光
強度は、燃焼室26内の燃料が燃焼した場合における光
強度よりも弱い値に定められている。
One end surface of the light 7 eyelid 35 for light irradiation faces into the combustion chamber 26 through the mounting hole 34, and by activating the light emitting element 43, the inside of the combustion chamber 26 is illuminated by the light 7 eyelid 35 for light irradiation. irradiated. The light intensity of the light irradiation optical fiber 35 is set to a value weaker than the light intensity when the fuel in the combustion chamber 26 is combusted.

受光用光ファイバ36においても光照射用光7アイバ3
5と同様に、その一端面は取付孔34を介して燃焼室2
6内に臨んでいる。受光用光7アイパ36によって、燃
焼室26内の燃焼状態を撮影することができる。
Also in the optical fiber 36 for receiving light, the optical fiber 7 for light irradiation 3
5, one end surface is connected to the combustion chamber 2 through the mounting hole 34.
It is coming within 6 days. The combustion state inside the combustion chamber 26 can be photographed by the receiving light 7 eyeper 36.

受光用光ファイバ36は保持体27に分布して配置され
ているので、燃焼室26内の燃焼状態を観測することが
可能となる。また燃焼室26内は発光素子43から光照
射用光ファイバ35を介して燃焼が生じている場合より
も弱い光で常時照射されているので、燃焼室26内に燃
焼が生じていない場合においても燃料の噴射状態などを
観測することが可能となる。
Since the light-receiving optical fibers 36 are distributed and arranged on the holder 27, it is possible to observe the combustion state within the combustion chamber 26. In addition, since the inside of the combustion chamber 26 is constantly irradiated with light that is weaker than when combustion is occurring from the light emitting element 43 via the light irradiation optical fiber 35, even when no combustion is occurring inside the combustion chamber 26. It becomes possible to observe the fuel injection status, etc.

このような構成を有する内燃機関において、燃焼室26
内の光強度の分布を各受光用光ファイバ36で時刻間隔
をあけて各時刻毎における同時的な受光用光ファイバ3
Gの受光強度をメモリ46にストアしておく、このよう
にして各時刻毎の光の分布状況を観測することによって
、燃焼室26内の燃料の噴霧状況または燃焼状況を観測
することが可能となる。
In an internal combustion engine having such a configuration, the combustion chamber 26
The distribution of the light intensity in each light receiving optical fiber 36 is measured simultaneously at each time with time intervals.
By storing the received light intensity of G in the memory 46 and observing the light distribution situation at each time in this way, it is possible to observe the spraying situation or combustion situation of the fuel in the combustion chamber 26. Become.

本発明では、内燃機関の燃焼室26の内壁面に光検出用
光ファイバ36の端面を分布して臨ませ、各受光用光フ
ァイバ36からの光を受光素子A1〜Anで検出して各
受光毎の光の分布状況を観測するようにしたので、燃焼
室26内における各時刻毎の燃料の噴射状況または@焼
状況を観測することが可能となる。
In the present invention, the end faces of the optical fibers 36 for light detection are distributed and faced on the inner wall surface of the combustion chamber 26 of the internal combustion engine, and the light from each optical fiber 36 for light reception is detected by the light receiving elements A1 to An. Since the light distribution situation is observed at each time, it becomes possible to observe the fuel injection situation or @burning situation in the combustion chamber 26 at each time.

上述の実施例では、保持体27は燃焼室26に臨むシリ
ングヘッド21の面に固定されたけれども、本発明の他
の実施例として保持体27を燃焼室26に臨むシリング
ライナ17の面に設けられてもよ、い、また保持体内部
に冷却水通路を設けてもよい。
In the embodiment described above, the holder 27 is fixed to the surface of the shilling head 21 facing the combustion chamber 26, but in another embodiment of the present invention, the holder 27 is provided on the surface of the shilling liner 17 facing the combustion chamber 26. Alternatively, a cooling water passage may be provided inside the holder.

効  果 以上のように本発明によれば、内m機関の燃焼室の内壁
面に光ファイバの端面を分布して臨ませ、各光7アイパ
からの光を受光素子で検出して各時刻毎の光の分布状況
を観測するようにしたので、燃焼室  内における燃料
の噴射状態や燃焼状態の分布を平面的に観測することが
可能となる。
Effects As described above, according to the present invention, the end faces of the optical fibers are distributed and exposed to the inner wall surface of the combustion chamber of the inner m engine, and the light from each of the seven eyepers is detected by the light receiving element, and the light is detected at each time. By observing the distribution of light, it becomes possible to observe the distribution of fuel injection and combustion conditions in a two-dimensional manner within the combustion chamber.

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

第1図は本発明を実施するために構/&される内M&磯
閃の断面図、tJS2図はfjSi図の切断面線■−■
から見た側面図、tjS3図は保持体27付近の斜視図
、第4図は撮影装置38および照明装rlL39の具体
的構成を示すブロック図、第5図は典型的な先行技術を
示す断面図である。 2.19・・・シリングヘッド、3.18・・・ピスト
ン、12.26・・・燃焼室、14.22・・・燃料噴
射弁、27・・・保持体、34・・・取付孔、35・・
・光照射用光7アイパ、36・・・受光用光ファイバ、
38・・・撮影装置、39・・・照明装置、43・・・
発光素子、45・・・処理回路、46・・・メモリ、A
1〜An・・・受光素子代理人  弁理士  画数 圭
一部 第2図 第4因 3°8
Figure 1 is a cross-sectional view of the inner M&Isosen constructed to implement the present invention, and tJS2 is a cross-sectional view of the fjSi diagram.
tjS3 is a perspective view of the vicinity of the holder 27, FIG. 4 is a block diagram showing the specific configuration of the photographing device 38 and the illumination device rlL39, and FIG. 5 is a sectional view showing a typical prior art. It is. 2.19... Schilling head, 3.18... Piston, 12.26... Combustion chamber, 14.22... Fuel injection valve, 27... Holder, 34... Mounting hole, 35...
・Optical fiber for light irradiation, 36...optical fiber for light reception,
38... Photographing device, 39... Lighting device, 43...
Light emitting element, 45... Processing circuit, 46... Memory, A
1 ~ An... Light receiving element agent Patent attorney Number of strokes Keiichi Figure 2 Factor 4 3° 8

Claims (1)

【特許請求の範囲】[Claims] 内燃機関の燃焼室の内壁面に光ファイバーの端面を分布
して臨ませ、各光ファイバーからの光を受光素子で検出
して、各時刻毎の光の分布状況を観測することを特徴と
する内燃機関の燃焼状態の観測方法。
An internal combustion engine characterized in that the end faces of optical fibers are distributed and faced on the inner wall surface of a combustion chamber of the internal combustion engine, and the light from each optical fiber is detected by a light receiving element to observe the distribution of light at each time. How to observe the combustion state of.
JP60059108A 1985-03-23 1985-03-23 Device for observing combustion state of internal combustion engine Expired - Lifetime JP2529666B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60059108A JP2529666B2 (en) 1985-03-23 1985-03-23 Device for observing combustion state of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60059108A JP2529666B2 (en) 1985-03-23 1985-03-23 Device for observing combustion state of internal combustion engine

Publications (2)

Publication Number Publication Date
JPS61217726A true JPS61217726A (en) 1986-09-27
JP2529666B2 JP2529666B2 (en) 1996-08-28

Family

ID=13103785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60059108A Expired - Lifetime JP2529666B2 (en) 1985-03-23 1985-03-23 Device for observing combustion state of internal combustion engine

Country Status (1)

Country Link
JP (1) JP2529666B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042025C2 (en) * 1990-12-28 2001-04-26 Hitachi Ltd Device and method for evaluating the combustion state in an internal combustion engine
JP2009209752A (en) * 2008-03-04 2009-09-17 Toyota Central R&D Labs Inc Visualization engine and piston for visualization engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289942A (en) * 1976-01-23 1977-07-28 Suntory Ltd Device for observing infinitesimal article in liquid
JPS58108869A (en) * 1981-12-23 1983-06-29 Hitachi Ltd Electronic camera
JPS5957137A (en) * 1982-09-27 1984-04-02 Japanese National Railways<Jnr> Method for detecting combustion state in reciprocal internal combustion engine cylinder by using optical fiber
JPS5999136U (en) * 1982-12-24 1984-07-04 株式会社日立製作所 Internal combustion engine combustion chamber translucent window stain prevention device
JPS59171280A (en) * 1983-03-17 1984-09-27 Sumitomo Electric Ind Ltd Picture display device for medical use
JPS59215965A (en) * 1983-05-20 1984-12-05 Toyota Motor Corp Detecting device of light of combustion flame in diesel engine
JPS60155929A (en) * 1983-06-08 1985-08-16 ア−・フアウ・エル ゲゼルシヤフト フイア フエアブレヌングスクラフトマシ−ネン ウント メステヒニク エム・ベ−・ハ− プロフエツサ−・ドクタ−・ドクタ−・ハ−・ツエ−・ハンス・リスト Device for making sure phenomenon process in combustion chamber for internal combustion engine under operation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5289942A (en) * 1976-01-23 1977-07-28 Suntory Ltd Device for observing infinitesimal article in liquid
JPS58108869A (en) * 1981-12-23 1983-06-29 Hitachi Ltd Electronic camera
JPS5957137A (en) * 1982-09-27 1984-04-02 Japanese National Railways<Jnr> Method for detecting combustion state in reciprocal internal combustion engine cylinder by using optical fiber
JPS5999136U (en) * 1982-12-24 1984-07-04 株式会社日立製作所 Internal combustion engine combustion chamber translucent window stain prevention device
JPS59171280A (en) * 1983-03-17 1984-09-27 Sumitomo Electric Ind Ltd Picture display device for medical use
JPS59215965A (en) * 1983-05-20 1984-12-05 Toyota Motor Corp Detecting device of light of combustion flame in diesel engine
JPS60155929A (en) * 1983-06-08 1985-08-16 ア−・フアウ・エル ゲゼルシヤフト フイア フエアブレヌングスクラフトマシ−ネン ウント メステヒニク エム・ベ−・ハ− プロフエツサ−・ドクタ−・ドクタ−・ハ−・ツエ−・ハンス・リスト Device for making sure phenomenon process in combustion chamber for internal combustion engine under operation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4042025C2 (en) * 1990-12-28 2001-04-26 Hitachi Ltd Device and method for evaluating the combustion state in an internal combustion engine
JP2009209752A (en) * 2008-03-04 2009-09-17 Toyota Central R&D Labs Inc Visualization engine and piston for visualization engine

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