DE3039879A1 - Optical probe for IC engine combustion chamber - has several phototransistors coupled by optical fibre cable to combustion chamber window, each responsive to different wavelength - Google Patents
Optical probe for IC engine combustion chamber - has several phototransistors coupled by optical fibre cable to combustion chamber window, each responsive to different wavelengthInfo
- Publication number
- DE3039879A1 DE3039879A1 DE19803039879 DE3039879A DE3039879A1 DE 3039879 A1 DE3039879 A1 DE 3039879A1 DE 19803039879 DE19803039879 DE 19803039879 DE 3039879 A DE3039879 A DE 3039879A DE 3039879 A1 DE3039879 A1 DE 3039879A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion chamber
- optical
- probe according
- window
- chamber probe
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
Description
Optische Brennraumsonde für BrennkraftmaschinenOptical combustion chamber probe for internal combustion engines
Die Erfindung betrifft eine optische Brennraumsonde für Brennkraftmaschinen mit einem Brennraumfenster und einem das Fenster mit einem Fototransistor verbindenden Lichtleiter.The invention relates to an optical combustion chamber probe for internal combustion engines with a combustion chamber window and one connecting the window with a phototransistor Light guide.
Eine derartige Sonde ist in der US-PS 39 78 720 beschrieben. Das Brennraumfenster besteht dort in einer durch einen kurzen Quarzstab verschlossenen zusätzlichen Öffnung in der Zylinderwand. Die am Kollektor des Fototransistors anfallenden elektrischen SignaLe sollen bei der bekannten Sonde zur Zündzeiteinstellung oder zur Bestimmung der Umdrehungszahl sowie zur Entdeckung von Fehlzündungen dienen.Such a probe is described in US Pat. No. 3,978,720. The combustion chamber window there is an additional opening closed by a short quartz rod in the cylinder wall. The electrical generated at the collector of the phototransistor With the known probe, signals should be used for setting the ignition time or for determination the number of revolutions as well as to detect misfires.
Für die Zusammensetzung des Abgases einer Brennkraftmaschine, die neuerdings gesetzlichen Bestimmungen unterliegt, ist der Verbrennungsvorgang in den Zylindern ursächlich verantwortlich. Der Verbrennungsvorgang seinerseits hängt von der Gemischaufbereitung und dem allgemeinen Zustand der Maschine im Bereich der Gasführunfr und des Verbrennungsraumes ab. Uber die vorgenannten Umstände und auch über den Verbrennungswirkungsgrad konrlle bis jetzt nur über Abgasmeßgeräte Aufschluß erhalten werden, die beispielsweise den CO/C02-Gehalt der Abgase ermittelten.For the composition of the exhaust gas of an internal combustion engine that has recently been subject to legal regulations, the incineration process is in causally responsible for the cylinders. The combustion process itself hangs of the mixture preparation and the general condition of the machine in the area the gas supply and the combustion chamber. About the aforementioned circumstances and up to now, the combustion efficiency factor has only been checked by means of exhaust gas measuring devices Information can be obtained which, for example, determined the CO / CO 2 content of the exhaust gases.
Der Erfindung lag die Aufgabe zugrunde, die eingangs beschriebene optische Brennraumsonde so zu verbessern, daß mit ihr auch der Verbrennungswirkungsgrad, der allgemeine Zustand der Brennkraftmaschine im Bereich der Gt3S führung und <les Ver@rennungs#aumes und die Abgaszusammensetzung untersucht werden können. Die Ergebnisse derartiger Untersuchungen können dann als Grundlagen einer Vergasereinstellung an Ottomotoren oder Einstellungen an Einspritzaggregaten bei Dieselmotoren dienen.The invention was based on the object described above to improve the optical combustion chamber probe so that with it the combustion efficiency, the general condition of the internal combustion engine in the area of Gt3S leadership and <les Combustion areas and the composition of the exhaust gas to be examined can. The results of such investigations can then be used as the basis for a Carburetor settings on gasoline engines or settings on injection units at Diesel engines are used.
Diese Aufgabe wird gemäß der Erfindung durch das Kennzeichen des Anspruchs 1 gelöst.This object is achieved according to the invention by the characterizing part of the claim 1 solved.
Die Erfindung geht davon aus, daß die Art der Verbrennung des Brennstoffes im Brennraum der Maschine durch die Flammenfärbung charakterisiert ist. So zeigt z. B.The invention assumes that the type of combustion of the fuel is characterized by the color of the flame in the combustion chamber of the engine. So shows z. B.
eine überwiegend orangefarbene Flamme ein zu fettes Brennstoff-Luftgemisch an. Bei einer überwiegend blaugefärbten Flamme ist das Brennstoff-Luftgemisch optimal.a predominantly orange flame a fuel-air mixture that is too rich at. With a predominantly blue-colored flame, the fuel-air mixture is optimal.
Eine weißblaue Flamme bedeutet ein zu mageres Gemisch.A white-blue flame means that the mixture is too lean.
Unregelmäßige orangefarbene Blitze lassen auf eine Undichtigkeit am Einlaßventil schließen.Irregular orange flashes indicate a leak in the Close the inlet valve.
Es gibt Fototransistoren, die eine Ansprechempfindlichkeit für bestimmte Lichtwellenlängen haben. Breitbandigere Fototransistoren können durch Vorsatz von Farbfiltern für bestimmte Farben empfindlich gemacht werden.There are phototransistors that have a sensitivity for certain Have wavelengths of light. More broadband phototransistors can be used by Color filters can be made sensitive to certain colors.
Die zur Beurteilung wichtigen Farben sind Blau, Weißblau und Orange.The colors that are important for assessment are blue, white-blue and orange.
Zweckmäßig werden an die Ausgänge der Fototransistoren Anzeige- und/oder Auswerteschaltungen angeschlossen.Appropriately, display and / or are at the outputs of the phototransistors Evaluation circuits connected.
lYm den mit einem besonderen Brennraumfenster in der Zylinderwandung oder im Zylinderkopf verbundenen Aufwand einzusparen, ist es zweckmäßig, als Fenster zur Beobachtung der im Innern des Brennraumes stattfindenden Verbrennungsvorgange eine Zünd- bzw. Glühkerze (bei Dieselmotoren) mit transy)arenCem Isolator vorzusehen. So kann beispielsweise als Isolator Quarzglas verwendet werden.lYm the one with a special combustion chamber window in the cylinder wall or to save effort in the cylinder head, it is useful as a window to observe the combustion processes taking place inside the combustion chamber a spark or glow plug (for diesel engines) with a transy) arenCem isolator must be provided. For example, quartz glass can be used as an insulator.
Der bisher übliche Kerzenstecker wird dann zweckmäßig so abgewandelt, daß er zugleich als Verbinder des Lichtleiterbündels mit dem transparenten Isolator dienen kann.The previously common spark plug connector is then appropriately modified so that that it also acts as a connector for the light guide bundle with the transparent insulator can serve.
Unter Umständen ist es nicht notwendig, an allen Zylindern einer mehrzylindrigen Brennkraftmaschine eine optische Brenrausonde anzubringen. Zur Uberwachung enügt es oft, einen einzigen oder zwei Zylinder einer Brennkraftmaschine zu beobachten. It may not be necessary to have one on all cylinders multi-cylinder internal combustion engine to attach an optical Brenrausonde. For monitoring It is often sufficient to observe a single cylinder or two cylinders of an internal combustion engine.
Mit Vorteil wird die neue optische Brennraumsonde als Sensor einer Brennkraftmaschinen-Diagnoseeinheit verwendet.The new optical combustion chamber probe is advantageously used as a sensor Internal combustion engine diagnostic unit used.
Ein anderes Anwendungsgebiet findet die optische Brennraumsonde als Sensor für eine Einrichtung zur Gemischaufbereitung.Another area of application is the optical combustion chamber probe as Sensor for a device for mixture preparation.
Die Erfindung wird anhand einer Figur erläutert, die ein Ausführungsbeispiel der Erfindung in schematischer Darstellung zeigt.The invention is explained with reference to a figure which shows an embodiment shows the invention in a schematic representation.
In der Figur ist der von einem Zylinderkopf 1 einer Brennkraftmaschine und dem Kolbenboden 2 eines im Zylinder der Brennkraftmaschine hin- und hergleitenden Kolbens 3 begrenzte Zylinderraum 4 zu erkennen. In eine Bohrung 5 im Zylinderkopf 1 ist eine Zündkerze 6 eingeschraubt, die mit ihren Elektroden 7 und 8 in den Brennraum 4 ragt. Die Zentralelektrode 7 ist von einem Isolator 9 umschlossen, der aus einem transparenten Isolationsmaterial, beispielsweise Mineralglas, besteht. Die Zentralelektrode 7 und der Isolator 9 sind druckfest in ein metallisches Gehäuse 10 der Zündkerze 6 eingepreßt und setzen sich über die ganze Länge der Zündkerze 6 nach außen fort. Ein Kerzenstecker 11 faßt ein Zündkabel 12 und ein Lichtleiterbündel 13 zusammen. Das Ziindkabel 12 ist über eine Klemme 14 mit dem herausragenden Ende der Zentralelektrode 7 verbunden. Stirnflächen der einzelnen Lichtleitel des Lichtleiterbündels 13 sitzen auf einer oberen Stirnfläche 15 des transparenten Isolators 9 auf. Das Lichtleiterbündel 13 tritt in eine Schalteinheit 16 ein, die mindestens drei Fototransistoren enthält, die bezüglich der Lichtwellenlänge verschiedene Ansprechempfindlichkeiten aufweisen. Elektrische Ausgänge der Fototransistoren sind an ein Anzeigegerät 17 angeschlossen, das drei Anzeigefelder 18, 19 und 20 enthält, die je nach der Art der Verbrennung bei zu fettem, zu magerem oder ordnungsgemäßem Gemisch aufleuchten.In the figure is that of a cylinder head 1 of an internal combustion engine and the piston head 2 of a back and forth in the cylinder of the internal combustion engine Piston 3 delimited cylinder space 4 can be seen. In a hole 5 in the cylinder head 1 a spark plug 6 is screwed into the combustion chamber with its electrodes 7 and 8 4 protrudes. The central electrode 7 is enclosed by an insulator 9, which consists of a transparent insulation material, such as mineral glass. The central electrode 7 and the insulator 9 are pressure-resistant in a metallic housing 10 of the spark plug 6 and continue over the entire length of the spark plug 6 to the outside. A spark plug connector 11 combines an ignition cable 12 and an optical fiber bundle 13. The ignition cable 12 is connected to the protruding end of the central electrode via a clamp 14 7 connected. The end faces of the individual light guides of the light guide bundle 13 are seated on an upper end face 15 of the transparent insulator 9. The light guide bundle 13 enters a Switching unit 16 a, the at least three phototransistors contains different responsivities with respect to the wavelength of light exhibit. Electrical outputs of the phototransistors are connected to a display device 17 connected, which contains three display fields 18, 19 and 20, which depending on the type of combustion light up if the mixture is too rich, too lean or in the correct manner.
10 Patentansprüche 1 Figur10 claims 1 figure
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803039879 DE3039879A1 (en) | 1980-10-22 | 1980-10-22 | Optical probe for IC engine combustion chamber - has several phototransistors coupled by optical fibre cable to combustion chamber window, each responsive to different wavelength |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803039879 DE3039879A1 (en) | 1980-10-22 | 1980-10-22 | Optical probe for IC engine combustion chamber - has several phototransistors coupled by optical fibre cable to combustion chamber window, each responsive to different wavelength |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3039879A1 true DE3039879A1 (en) | 1982-06-03 |
Family
ID=6114949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19803039879 Withdrawn DE3039879A1 (en) | 1980-10-22 | 1980-10-22 | Optical probe for IC engine combustion chamber - has several phototransistors coupled by optical fibre cable to combustion chamber window, each responsive to different wavelength |
Country Status (1)
Country | Link |
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DE (1) | DE3039879A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT384108B (en) * | 1983-06-08 | 1987-10-12 | Avl Verbrennungskraft Messtech | DEVICE FOR DETECTING THE PROCESSES IN THE COMBUSTION ROOM OF AN INTERNAL COMBUSTION ENGINE IN OPERATION |
FR2604213A1 (en) * | 1986-09-20 | 1988-03-25 | Lucas Ind Plc | DETECTOR FOR INTERNAL COMBUSTION ENGINES. |
EP0692618A3 (en) * | 1994-07-15 | 1998-10-14 | General Electric Company | Emissions control for internal combustion engine |
DE19830213C2 (en) * | 1997-07-09 | 2000-08-03 | Avl List Gmbh | Spark plug for internal combustion engines |
US6487899B1 (en) | 1999-01-19 | 2002-12-03 | Deutsches Zentrum Fuer Luft -Und Raumfahrt E.V. | Combustion diagnosis system |
DE102004050437A1 (en) * | 2004-10-16 | 2006-04-20 | Audi Ag | Optical sensor receiving housing for internal combustion engine, has housing connections for cooling and hot agents, where agents flow through mantle which is formed between housing and separate component |
CN107355310A (en) * | 2017-08-18 | 2017-11-17 | 吉林大学 | A kind of optical engine |
-
1980
- 1980-10-22 DE DE19803039879 patent/DE3039879A1/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT384108B (en) * | 1983-06-08 | 1987-10-12 | Avl Verbrennungskraft Messtech | DEVICE FOR DETECTING THE PROCESSES IN THE COMBUSTION ROOM OF AN INTERNAL COMBUSTION ENGINE IN OPERATION |
FR2604213A1 (en) * | 1986-09-20 | 1988-03-25 | Lucas Ind Plc | DETECTOR FOR INTERNAL COMBUSTION ENGINES. |
EP0692618A3 (en) * | 1994-07-15 | 1998-10-14 | General Electric Company | Emissions control for internal combustion engine |
DE19830213C2 (en) * | 1997-07-09 | 2000-08-03 | Avl List Gmbh | Spark plug for internal combustion engines |
US6487899B1 (en) | 1999-01-19 | 2002-12-03 | Deutsches Zentrum Fuer Luft -Und Raumfahrt E.V. | Combustion diagnosis system |
DE102004050437A1 (en) * | 2004-10-16 | 2006-04-20 | Audi Ag | Optical sensor receiving housing for internal combustion engine, has housing connections for cooling and hot agents, where agents flow through mantle which is formed between housing and separate component |
DE102004050437B4 (en) * | 2004-10-16 | 2007-07-12 | Audi Ag | Housing for receiving an optical sensor |
CN107355310A (en) * | 2017-08-18 | 2017-11-17 | 吉林大学 | A kind of optical engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |