JPH06167240A - Combustion controller - Google Patents

Combustion controller

Info

Publication number
JPH06167240A
JPH06167240A JP32204692A JP32204692A JPH06167240A JP H06167240 A JPH06167240 A JP H06167240A JP 32204692 A JP32204692 A JP 32204692A JP 32204692 A JP32204692 A JP 32204692A JP H06167240 A JPH06167240 A JP H06167240A
Authority
JP
Japan
Prior art keywords
spark
ignition
light
internal combustion
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
JP32204692A
Other languages
Japanese (ja)
Other versions
JP2796023B2 (en
Inventor
Katsuaki Yasui
克明 安井
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4322046A priority Critical patent/JP2796023B2/en
Publication of JPH06167240A publication Critical patent/JPH06167240A/en
Application granted granted Critical
Publication of JP2796023B2 publication Critical patent/JP2796023B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)
  • Spectrometry And Color Measurement (AREA)

Abstract

PURPOSE:To finely feedback-control the combustion of an internal combustion engine in a simple manner by using a spectrometer for the spark light generated in the ignition of a spark plus of the internal combustion engine and analyzing the composition of the gas on the basis od the spectrum of the spark light. CONSTITUTION:As for an internal combustion engine, a high voltage an internal combustion engine, a high voltage is supplied to a spark plug 3 through a high tension cord 7 f m an ignition circuit 6 immediately before end of the compression stroke. Accordingly, a spark is generated in the gap part between the outside electrode 4 of the spark plug 3 and the center electrode 5, and the mixed gas in a combustion chamber 1 is ignited. In this case, the spark light generated in ignition is introduced into a spectrometer 11 through a plurality of optical fibers 9 and 12 from a light introducing port 10. The output of the spectrometer 11 is read out in a control circuit 14 in accordance with the timing of the generation of spark. Accordingly, the combustion state is analysed on the basis of the composition of the gas obtained from the spectrum of the spark light, and the combustion of the internal combustion engine is feedback- controlled.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、自動車用エンジンな
どの内燃機関における燃料燃焼をフィードバック制御す
るための燃焼制御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 combustion control device for feedback controlling fuel combustion in an internal combustion engine such as an automobile engine.

【0002】[0002]

【従来の技術】内燃機関における燃料燃焼をフィードバ
ック制御するための燃焼制御装置には、空燃比を検出す
るセンサとして、ジルコニア酸素センサが広く使われて
いる。しかし、このセンサは、応答時間が長いために、
過渡運転状態における制御性に問題があった。そこで、
燃焼ガスから発せられる光から空燃比を判断し、燃焼を
フィードバック制御する光学式の燃焼制御装置が提案さ
れている。
2. Description of the Related Art A zirconia oxygen sensor is widely used as a sensor for detecting an air-fuel ratio in a combustion control device for feedback controlling fuel combustion in an internal combustion engine. However, this sensor has a long response time,
There was a problem with the controllability in the transient operation state. Therefore,
An optical combustion control device has been proposed, which determines the air-fuel ratio from the light emitted from the combustion gas and feedback controls the combustion.

【0003】図3は、特開昭57−186040号公報に記載
された従来の光学式の燃焼制御装置の光検出部を示す断
面図である。図において、3は点火プラグ、4は点火プ
ラグ3の先端部に設けられた外部電極、5は外部電極4
に対向して設けられた点火プラグ3の中心電極、10は
点火プラグ3内に設けられた光導入口、21aは点火プ
ラグ3内の、光導入口10の後方に設置された赤色光用
の感光ダイオード、21bは同じく光導入口10の後方
に設置された青色光用の感光ダイオードである。
FIG. 3 is a cross-sectional view showing a photo-detecting portion of a conventional optical combustion control device described in Japanese Patent Laid-Open No. 57-186040. In the figure, 3 is an ignition plug, 4 is an external electrode provided at the tip of the ignition plug 3, and 5 is an external electrode 4.
The center electrode of the spark plug 3 provided to face 10 is a light inlet provided in the spark plug 3, and the reference numeral 21a is for the red light provided behind the light inlet 10 in the spark plug 3. A light-sensitive diode 21b is a light-sensitive diode for blue light which is also installed behind the light inlet 10.

【0004】次に、上述した従来の燃焼制御装置の動作
について説明する。内燃機関の膨張行程において、燃焼
室内では、燃料が燃焼するにつれて発光し、その光は、
中心電極5の周囲の空間を通って光導入口10に導か
れ、赤色光用の感光ダイオード21aと青色光用の感光
ダイオード21bに至る。この発光時に、混合気の空燃
比が理論空燃比より濃い場合には火炎の色が赤色より
に、薄い場合には青色よりになる。従って、燃焼時の、
赤色光用の感光ダイオード21aと青色光用の感光ダイ
オード21bの出力を比較することにより、空燃比が理
論空燃比から濃い方向にずれているのか薄い方向にずれ
ているのかを判断することができる。この判断をもとに
燃料の噴射量をフィードバック制御すれば、自動車の過
渡運転時においても応答性よく空燃比を最適値に制御す
ることができる。
Next, the operation of the above-described conventional combustion control device will be described. In the expansion stroke of the internal combustion engine, light is emitted as the fuel burns in the combustion chamber, and the light is
It is guided to the light inlet 10 through the space around the center electrode 5, and reaches the photosensitive diode 21a for red light and the photosensitive diode 21b for blue light. At the time of this light emission, when the air-fuel ratio of the air-fuel mixture is higher than the stoichiometric air-fuel ratio, the color of the flame becomes red, and when it is light, it becomes blue. Therefore, during combustion,
By comparing the outputs of the photo diode 21a for red light and the photo diode 21b for blue light, it is possible to determine whether the air-fuel ratio deviates from the stoichiometric air-fuel ratio in the dark direction or in the dark direction. . If the fuel injection amount is feedback-controlled based on this judgment, the air-fuel ratio can be controlled to the optimum value with good responsiveness even during the transient operation of the vehicle.

【0005】[0005]

【発明が解決しようとする課題】従来の光学式の燃焼制
御装置は以上のように構成されているので、空燃比制御
のみに対しては有効であったが、排気ガス規制の強化に
ともない、EGR制御や、点火時期制御、2次エアー制
御などのきめ細かな制御が要求されるようになると、2
つの感光ダイオードの出力のみからでは情報量が少なす
ぎ、適切な制御ができないという問題点があった。この
ため、排気ガス中の酸素、窒素酸化物、一酸化炭素、炭
化水素等の各成分毎の濃度を検出する手段が望まれてい
た。
Since the conventional optical combustion control device is constructed as described above, it is effective only for the air-fuel ratio control, but with the strengthening of exhaust gas regulations, If fine control such as EGR control, ignition timing control, and secondary air control is required, 2
There is a problem that the amount of information is too small only from the output of one of the photosensitive diodes, and proper control cannot be performed. Therefore, a means for detecting the concentration of each component such as oxygen, nitrogen oxide, carbon monoxide, and hydrocarbon in the exhaust gas has been desired.

【0006】また、従来の他の光学式の燃焼制御装置で
は、燃料の燃焼によって発生する光を分光光度計に導い
てスペクトル分析を行い、成分毎の濃度を求める方式も
検討されているが、スペクトル分析を行うためには光を
一度細いスリットで絞り、プリズム、または回折格子で
分散したのちの特定のスペクトルの光のみを検知する必
要があるため、分光光度計には非常に強い光を導いてや
る必要がある。このため、光を集光するためのレンズ、
反射鏡等の光学装置が大型になりやすく、実用には至っ
てない。
In another conventional optical combustion control device, a method of guiding the light generated by the combustion of fuel to a spectrophotometer for spectral analysis to determine the concentration of each component has been studied. In order to perform spectrum analysis, it is necessary to narrow the light once with a narrow slit, disperse it with a prism or a diffraction grating, and then detect only the light of a specific spectrum, so a very strong light is guided to the spectrophotometer. I need to do it. Therefore, a lens for collecting light,
An optical device such as a reflecting mirror tends to be large in size, and has not been put into practical use.

【0007】この発明は、上記の問題点を解決するため
になされたもので、簡単な装置により燃焼ガス、または
排気ガス中の複数の成分の濃度を検出し、きめ細かな燃
焼制御をすることが可能な燃焼制御装置を得ることを目
的としている。
The present invention has been made in order to solve the above problems, and it is possible to detect the concentration of a plurality of components in combustion gas or exhaust gas by a simple device to perform fine combustion control. The aim is to obtain a possible combustion control device.

【0008】[0008]

【課題を解決するための手段】この発明の請求項1に係
る燃焼制御装置は、内燃機関の点火プラグの中心電極を
貫通し、上記点火プラグの外部電極と上記中心電極の間
のギャップ部に光導入口を有し、この光導入口からの、
上記点火プラグの着火時に発生したスパーク光を導く光
ファイバと、この光ファイバに接続された分光光度計
と、この分光光度計の出力から気体の組成を分析し、上
記内燃機関における燃料燃焼をフィードバック制御する
制御回路とを備えたものである。
A combustion control device according to claim 1 of the present invention penetrates a center electrode of an ignition plug of an internal combustion engine and forms a gap between an outer electrode of the ignition plug and the center electrode. Has a light inlet, and from this light inlet,
An optical fiber that guides the spark light generated at the time of ignition of the spark plug, a spectrophotometer connected to the optical fiber, and a composition of gas from the output of the spectrophotometer is analyzed, and fuel combustion in the internal combustion engine is fed back. And a control circuit for controlling.

【0009】又、この発明の請求項2に係る燃焼制御装
置は、内燃機関の点火プラグの中心電極を貫通し、上記
点火プラグの外部電極と上記中心電極の間のギャップ部
に光導入口を有し、この光導入口からの、上記点火プラ
グの着火時に発生したスパーク光を導く光ファイバと、
この光ファイバに接続された分光光度計と、この分光光
度計の出力から気体の組成を分析し、上記内燃機関にお
ける燃料燃焼をフィードバック制御する制御回路と、上
記点火プラグに高電圧を供給する点火回路とを備え、通
常の点火タイミング以外の、膨張行程中や排気行程中に
も上記点火回路により上記点火プラグにスパークを発生
させて気体の組成を分析し、上記内燃機関における燃料
燃焼をフィードバック制御するようにしたものである。
Further, according to a second aspect of the present invention, there is provided a combustion control device, which penetrates a center electrode of an ignition plug of an internal combustion engine and has a light inlet in a gap portion between an outer electrode of the ignition plug and the center electrode. Having an optical fiber for guiding the spark light generated at the time of ignition of the ignition plug from the light inlet,
A spectrophotometer connected to the optical fiber, a control circuit that analyzes the composition of gas from the output of the spectrophotometer, and feedback-controls fuel combustion in the internal combustion engine, and ignition that supplies a high voltage to the ignition plug. Circuit, the spark ignition is generated by the ignition circuit during the expansion stroke and the exhaust stroke other than the normal ignition timing to analyze the gas composition, and the fuel combustion in the internal combustion engine is feedback-controlled. It is something that is done.

【0010】[0010]

【作用】この発明の請求項1における燃焼制御装置は、
内燃機関の点火プラグのスパーク光を、スパークの中心
から採光するようにしたので簡単な装置で分光光度計に
強力な光を導くことができる。
The combustion control device according to claim 1 of the present invention is
Since the spark light of the spark plug of the internal combustion engine is taken from the center of the spark, powerful light can be guided to the spectrophotometer with a simple device.

【0011】また、この発明の請求項2に係る燃焼制御
装置によれば、スパークは、通常の着火タイミング以外
に例えば排気行程中や、膨張行程中に発生させることも
できるため、それらの行程中における各ガス成分の濃度
を知ることができ、よりきめ細かい燃焼制御を行うこと
ができる。
Further, according to the combustion control apparatus of the second aspect of the present invention, the spark can be generated during the exhaust stroke or the expansion stroke other than the normal ignition timing, so that the spark can be generated during those strokes. It is possible to know the concentration of each gas component in, and more detailed combustion control can be performed.

【0012】[0012]

【実施例】【Example】

実施例1.以下、この発明の一実施例による燃焼制御装
置を図について説明する。図1において、1は内燃機関
(図示しない)の燃焼室、2は燃焼室1を形成するシリ
ンダのシリンダヘッド、3はシリンダヘッド2に取り付
けられた点火プラグ、4は点火プラグ3の外部電極、5
は点火プラグ3の中心電極、6は点火プラグ3に高電圧
を供給する点火回路、7は点火回路6と点火プラグ3を
結ぶハイテンションコード、8はハイテンションコード
7の先端に取り付けられた点火プラグ3のソケット、9
は点火プラグ3の中心電極5の中心軸上を貫通し、外部
電極4と中心電極5の間のギャップ部に光導入口10を
有する光ファイバ、11は分光光度計、12はその一端
が後述する光コネクタによって光ファイバ9に接続され
るとともに、他端が分光光度計光11に接続され、光フ
ァイバ9によって導かれたスパーク光を分光光度計11
に導く光ファイバ、13はソケット8に設けられて光フ
ァイバ9と光ファイバ12を接続するための光コネク
タ、14は分光光度計11の出力が入力され、内燃機関
の燃料燃焼を制御する制御回路である。尚、この実施例
1では、スパーク光を分光光度計11に導くための光フ
ァイバを光ファイバ9と光ファイバ12の2本の光ファ
イバで構成したが、これらを1本の光ファイバで構成し
ても良い。
Example 1. Hereinafter, a combustion control device according to an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a combustion chamber of an internal combustion engine (not shown), 2 is a cylinder head of a cylinder forming the combustion chamber 1, 3 is an ignition plug attached to the cylinder head 2, 4 is an external electrode of the ignition plug 3, 5
Is a center electrode of the spark plug 3, 6 is an ignition circuit for supplying a high voltage to the spark plug 3, 7 is a high tension cord connecting the ignition circuit 6 and the spark plug 3, and 8 is an ignition attached to the tip of the high tension cord 7. Socket for plug 3, 9
Is an optical fiber that penetrates the center axis of the center electrode 5 of the spark plug 3 and has a light inlet 10 in the gap between the outer electrode 4 and the center electrode 5, 11 is a spectrophotometer, and 12 is one end of which will be described later. Is connected to the optical fiber 9 by the optical connector and the other end is connected to the spectrophotometer light 11, and the spark light guided by the optical fiber 9 is connected to the spectrophotometer 11
To the optical fiber, 13 is an optical connector provided in the socket 8 for connecting the optical fiber 9 and the optical fiber 12, and 14 is a control circuit for inputting the output of the spectrophotometer 11 and controlling the fuel combustion of the internal combustion engine. Is. In the first embodiment, the optical fiber for guiding the spark light to the spectrophotometer 11 is composed of two optical fibers, the optical fiber 9 and the optical fiber 12, but these are composed of one optical fiber. May be.

【0013】以下に実施例1の動作を説明する。内燃機
関では、圧縮行程の終了する少し以前に点火回路6から
ハイテンションコード7を通して点火プラグ3に高電圧
が送られ、点火プラグ3の外部電極4と中心電極5の間
のギャップ部に発生するスパークにより燃焼室1内の混
合気に着火される。このとき発生するスパーク光は光導
入口10、光ファイバ9、12を経由して分光光度計1
1に導かれる。分光光度計11の出力は、スパーク発生
のタイミングに合わせて制御回路14に読み込まれる。
スパーク光はスパーク発生時の気体の組成に特有なスペ
クトル分布を持っているため、制御回路14ではこのス
ペクトルから得られる気体の組成をもとに燃焼状態を分
析し、内燃機関における燃料燃焼をフィードバック制御
することができる。
The operation of the first embodiment will be described below. In the internal combustion engine, a high voltage is sent from the ignition circuit 6 to the ignition plug 3 through the high tension cord 7 shortly before the end of the compression stroke, and is generated in the gap portion between the outer electrode 4 and the center electrode 5 of the ignition plug 3. The spark ignites the mixture in the combustion chamber 1. The spark light generated at this time passes through the light guide inlet 10 and the optical fibers 9 and 12 and the spectrophotometer 1
Guided to 1. The output of the spectrophotometer 11 is read by the control circuit 14 at the timing of spark generation.
Since the spark light has a spectral distribution peculiar to the composition of the gas when the spark is generated, the control circuit 14 analyzes the combustion state based on the composition of the gas obtained from this spectrum and feeds back the fuel combustion in the internal combustion engine. Can be controlled.

【0014】実施例2.なお、上記実施例では通常の点
火タイミングにおけるスパーク光を用いたが、通常のタ
イミング以外に、膨張行程中や排気行程中にもスパーク
を発生させて気体の組成を分析してもよく、各行程中の
気体の組成を知ることができる。特に4サイクルエンジ
ン等の内燃機関では一部には点火装置の構成を簡単にす
るために、排気行程中の、通常の点火タイミングから3
60゜ずれた、混合気の着火には不要の時点にもスパー
クを発生するものがあるように、排気行程中にスパーク
を発生させることは容易である。排気行程中の酸素、窒
素酸化物、一酸化炭素、炭化水素等の各成分毎の濃度を
知ることは、排ガス制御上特に重要であり、この情報を
もとに燃料の噴射量、噴射タイミング、点火タイミン
グ、EGR、2次エアー等のフィードバック制御を行え
ば、よりクリーンな排気ガスを実現できる。
Example 2. In the above example, the spark light at the normal ignition timing was used, but in addition to the normal timing, the spark composition may be generated during the expansion stroke or the exhaust stroke to analyze the composition of the gas. The composition of the gas inside can be known. In particular, in an internal combustion engine such as a 4-cycle engine, in order to simplify the structure of the ignition device, in some cases, from the normal ignition timing during the exhaust stroke,
It is easy to generate sparks during the exhaust stroke, as some sparks may be generated even when they are unnecessary for ignition of the air-fuel mixture, which are deviated by 60 °. Knowing the concentration of each component such as oxygen, nitrogen oxides, carbon monoxide, and hydrocarbons in the exhaust stroke is particularly important for exhaust gas control, and based on this information, the fuel injection amount, injection timing, By performing feedback control of ignition timing, EGR, secondary air, etc., cleaner exhaust gas can be realized.

【0015】実施例3.また、上記実施例1では光ファ
イバ9の端部をそのまま光導入口10としたが、図2に
示すように、光導入口10に集光レンズ20を備えても
良い。集光レンズ20を設けることにより、分光光度計
11にはより強い光を導くことができるほか、光導入口
10の表面積が広がるので汚れに強くなる。
Example 3. In the first embodiment, the end of the optical fiber 9 is used as the light guide entrance 10 as it is, but as shown in FIG. 2, the light entrance 10 may be provided with a condenser lens 20. By providing the condenser lens 20, stronger light can be guided to the spectrophotometer 11, and the surface area of the light inlet 10 is expanded, so that the light is resistant to dirt.

【0016】[0016]

【発明の効果】以上のように、この発明の請求項1に係
る燃焼制御装置は、内燃機関の点火プラグの中心電極を
貫通し、上記点火プラグの外部電極と上記中心電極の間
のギャップ部に光導入口を有し、この光導入口からの、
上記点火プラグの着火時に発生したスパーク光を導く光
ファイバと、この光ファイバに接続された分光光度計
と、この分光光度計の出力から気体の組成を分析し、上
記内燃機関における燃料燃焼をフィードバック制御する
制御回路とを備えたので簡単な装置で分光光度計に強力
な光を導くことができるという効果を奏する。
As described above, the combustion control device according to the first aspect of the present invention penetrates the center electrode of the spark plug of the internal combustion engine, and the gap portion between the outer electrode of the spark plug and the center electrode. Has a light inlet, and from this light inlet,
An optical fiber that guides the spark light generated at the time of ignition of the spark plug, a spectrophotometer connected to the optical fiber, and a composition of gas from the output of the spectrophotometer is analyzed, and fuel combustion in the internal combustion engine is fed back. Since the control circuit for controlling is provided, there is an effect that powerful light can be guided to the spectrophotometer with a simple device.

【0017】また、この発明の請求項2に係る燃焼制御
装置は、内燃機関の点火プラグの中心電極を貫通し、上
記点火プラグの外部電極と上記中心電極の間のギャップ
部に光導入口を有し、この光導入口からの、上記点火プ
ラグの着火時に発生したスパーク光を導く光ファイバ
と、この光ファイバに接続された分光光度計と、この分
光光度計の出力から気体の組成を分析し、上記内燃機関
における燃料燃焼をフィードバック制御する制御回路
と、上記点火プラグに高電圧を供給する点火回路とを備
え、通常の点火タイミング以外の、膨張行程中や排気行
程中にも上記点火回路により上記点火プラグにスパーク
を発生させて気体の組成を分析し、上記内燃機関におけ
る燃料燃焼をフィードバック制御するようにしたので、
スパークは、通常の着火タイミング以外に例えば排気行
程中や、膨張行程中に発生させせることもできるため、
それらの行程中における各ガス成分の濃度を知ることが
でき、よりきめ細かい燃焼制御を行うことができるとい
う効果を奏する。
Further, according to a second aspect of the present invention, there is provided a combustion control device, which penetrates a center electrode of an ignition plug of an internal combustion engine and has a light inlet in a gap portion between an outer electrode of the ignition plug and the center electrode. Having an optical fiber for guiding the spark light generated at the time of ignition of the ignition plug from this light inlet, a spectrophotometer connected to this optical fiber, and analyzing the gas composition from the output of this spectrophotometer And a control circuit for feedback-controlling fuel combustion in the internal combustion engine, and an ignition circuit for supplying a high voltage to the ignition plug, and the ignition circuit during an expansion stroke and an exhaust stroke other than a normal ignition timing. Since the spark is generated in the spark plug to analyze the composition of the gas, the fuel combustion in the internal combustion engine is feedback controlled.
Sparks can be generated during, for example, the exhaust stroke or the expansion stroke in addition to the normal ignition timing.
It is possible to know the concentration of each gas component during those strokes, and it is possible to perform more detailed combustion control.

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

【図1】この発明の実施例1を示す一部断面図である。FIG. 1 is a partial cross-sectional view showing a first embodiment of the present invention.

【図2】この発明の実施例3を示す断面図である。FIG. 2 is a sectional view showing Embodiment 3 of the present invention.

【図3】従来の光学式の燃焼制御装置の光検出部を示す
断面図である。
FIG. 3 is a cross-sectional view showing a light detection unit of a conventional optical combustion control device.

【符号の説明】[Explanation of symbols]

3 点火プラグ 4 外部電極 5 中心電極 9 光ファイバ 10 光導入口 11 分光光度計 12 光ファイバ 14 制御回路 3 Spark Plug 4 External Electrode 5 Center Electrode 9 Optical Fiber 10 Optical Entrance 11 Spectrophotometer 12 Optical Fiber 14 Control Circuit

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 G01N 21/67 A 9115−2J H01T 13/40 7509−5G ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location G01N 21/67 A 9115-2J H01T 13/40 7509-5G

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 内燃機関の点火プラグの中心電極を貫通
し、上記点火プラグの外部電極と上記中心電極の間のギ
ャップ部に光導入口を有し、この光導入口からの、上記
点火プラグの着火時に発生したスパーク光を導く光ファ
イバと、 この光ファイバに接続された分光光度計と、 この分光光度計の出力から気体の組成を分析し、上記内
燃機関における燃料燃焼をフィードバック制御する制御
回路と、を備えたことを特徴とする燃焼制御装置。
1. A spark plug that penetrates a center electrode of an internal combustion engine and has a light entrance in a gap between the outer electrode of the spark plug and the center electrode, and the spark plug from the light entrance. An optical fiber that guides the spark light generated at the time of ignition, a spectrophotometer connected to this optical fiber, the composition of the gas is analyzed from the output of this spectrophotometer, and the feedback control of the fuel combustion in the internal combustion engine is performed. A combustion control device comprising: a circuit.
【請求項2】 内燃機関の点火プラグの中心電極を貫通
し、上記点火プラグの外部電極と上記中心電極の間のギ
ャップ部に光導入口を有し、この光導入口からの、上記
点火プラグの着火時に発生したスパーク光を導く光ファ
イバと、 この光ファイバに接続された分光光度計と、 この分光光度計の出力から気体の組成を分析し、上記内
燃機関における燃料燃焼をフィードバック制御する制御
回路と、 上記点火プラグに高電圧を供給する点火回路と、を備
え、 通常の点火タイミング以外の、膨張行程中や排気行程中
にも上記点火回路により上記点火プラグにスパークを発
生させて気体の組成を分析し、上記内燃機関における燃
料燃焼をフィードバック制御することを特徴とする燃焼
制御装置。
2. A spark plug that penetrates a center electrode of an internal combustion engine, and has a light entrance in a gap portion between the outer electrode of the spark plug and the center electrode, and the spark plug from the light entrance. An optical fiber that guides the spark light generated at the time of ignition, a spectrophotometer connected to this optical fiber, the composition of the gas is analyzed from the output of this spectrophotometer, and the feedback control of the fuel combustion in the internal combustion engine is performed. Circuit, and an ignition circuit that supplies a high voltage to the ignition plug, and sparks are generated in the ignition plug by the ignition circuit during the expansion stroke and the exhaust stroke other than the normal ignition timing. A combustion control device characterized by analyzing composition and performing feedback control of fuel combustion in the internal combustion engine.
JP4322046A 1992-12-01 1992-12-01 Combustion control device Expired - Fee Related JP2796023B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4322046A JP2796023B2 (en) 1992-12-01 1992-12-01 Combustion control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4322046A JP2796023B2 (en) 1992-12-01 1992-12-01 Combustion control device

Publications (2)

Publication Number Publication Date
JPH06167240A true JPH06167240A (en) 1994-06-14
JP2796023B2 JP2796023B2 (en) 1998-09-10

Family

ID=18139321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4322046A Expired - Fee Related JP2796023B2 (en) 1992-12-01 1992-12-01 Combustion control device

Country Status (1)

Country Link
JP (1) JP2796023B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008516126A (en) * 2004-10-06 2008-05-15 キストラー ホールディング アクチエンゲゼルシャフト Spark plug with optical sensor
JP2010071271A (en) * 2008-09-22 2010-04-02 Imagineering Inc Fuel concentration measuring device, fuel concentration measuring method, and method of preparing calibration curve therefor
WO2011040589A1 (en) * 2009-09-30 2011-04-07 イマジニアリング株式会社 Plug for observation and ignition observing system
JP2014002097A (en) * 2012-06-20 2014-01-09 Nippon Soken Inc Cylinder internal detection apparatus for internal combustion engine
KR101428717B1 (en) * 2013-04-30 2014-08-08 쌍용자동차 주식회사 Spark plug with oxygen sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01247740A (en) * 1988-03-28 1989-10-03 Hitachi Ltd Detecting device for local air-fuel ratio

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01247740A (en) * 1988-03-28 1989-10-03 Hitachi Ltd Detecting device for local air-fuel ratio

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008516126A (en) * 2004-10-06 2008-05-15 キストラー ホールディング アクチエンゲゼルシャフト Spark plug with optical sensor
JP4689675B2 (en) * 2004-10-06 2011-05-25 キストラー ホールディング アクチエンゲゼルシャフト Spark plug with optical sensor
JP2011102589A (en) * 2004-10-06 2011-05-26 Kistler Holding Ag Spark plug with optical sensor
JP2010071271A (en) * 2008-09-22 2010-04-02 Imagineering Inc Fuel concentration measuring device, fuel concentration measuring method, and method of preparing calibration curve therefor
WO2011040589A1 (en) * 2009-09-30 2011-04-07 イマジニアリング株式会社 Plug for observation and ignition observing system
JP5688570B2 (en) * 2009-09-30 2015-03-25 イマジニアリング株式会社 Observation plug and ignition observation system
US9627858B2 (en) 2009-09-30 2017-04-18 Imagineering, Inc. Observation plug and spark observation system
JP2014002097A (en) * 2012-06-20 2014-01-09 Nippon Soken Inc Cylinder internal detection apparatus for internal combustion engine
KR101428717B1 (en) * 2013-04-30 2014-08-08 쌍용자동차 주식회사 Spark plug with oxygen sensor

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