DE102004012073A1 - Ignition control device for a combustion engine using laser impulse ignition evaluates pressure changes in the combustion chamber - Google Patents
Ignition control device for a combustion engine using laser impulse ignition evaluates pressure changes in the combustion chamber Download PDFInfo
- Publication number
- DE102004012073A1 DE102004012073A1 DE200410012073 DE102004012073A DE102004012073A1 DE 102004012073 A1 DE102004012073 A1 DE 102004012073A1 DE 200410012073 DE200410012073 DE 200410012073 DE 102004012073 A DE102004012073 A DE 102004012073A DE 102004012073 A1 DE102004012073 A1 DE 102004012073A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion chamber
- ignition
- pressure
- combustion engine
- laser pulse
- 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- Withdrawn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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/02—Checking or adjusting ignition timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
-
- 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
- G01L23/221—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 for detecting or indicating knocks in internal combustion engines
- G01L23/225—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 for detecting or indicating knocks in internal combustion engines circuit arrangements therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/025—Engine noise, e.g. determined by using an acoustic sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Die
Erfindung geht aus von einer Vorrichtung bzw. einem Verfahren zur
Kontrolle einer Zündung
einer Brennkraftmaschine mittels eines Laserimpulses nach der Gattung
der unabhängigen
Patentansprüche.
Aus der
Vorteile der ErfindungAdvantages of invention
Die erfindungsgemäße Vorrichtung bzw. das erfindungsgemäße Verfahren mit den Merkmalen der unabhängigen Patentansprüche haben demgegenüber den Vorteil, dass eine sichere Erkennung der Zündung durch den Laserimpuls ermöglicht wird. Es kann so überprüft werden, ob der Laserimpuls in ausreichender Stärke in den Brennraum eingebracht wird, um eine sichere Zündung des brennfähigen Gemisches zu gewährleisten. Insbesondere kann so festgestellt werden, wenn der Laserimpuls durch Alterungen oder Verschmutzungen nicht mehr in ausreichender Stärke in den Brennraum eingebracht wird.The inventive device or the inventive method with the characteristics of the independent claims have in contrast the advantage that a reliable detection of the ignition by the laser pulse allows becomes. It can be checked that way whether the laser pulse is introduced in sufficient strength into the combustion chamber, for a safe ignition of the combustible To ensure a mixture. In particular, it can be determined when the laser pulse through Aging or dirt no longer in sufficient strength in the Combustion chamber is introduced.
Weitere Vorteile und Verbesserungen ergeben sich durch die Merkmale der abhängigen Patentansprüche. Die Auswertung der Druckänderung im Brennraum erfolgt zweckmäßiger Weise durch einen direkten Brennraumdrucksensor oder einen Körperschallsensor. Die Druckänderungen werden in einem Zeitfenster nach dem Laserimpuls ausgewertet, in dem aufgrund einer Plasmaexpansion in dem Brennraum eine Druckerhöhung zu erwarten ist. Die ermittelten Signale werden zweckmäßigerweise einer Filterung, insbesondere einer Hochpassfilterung unterzogen, um nur die hochdynamischen Signale zu erkennen. Die so gefilterten Signale werden dann bezüglich ihrer Spitzenwerte und/oder bezüglich der Energieinhalte im Frequenzbereich untersucht und/oder nach einer Gleichrichtung und Aufsummation bewertet.Further Advantages and improvements result from the characteristics of the dependent Claims. The evaluation of the pressure change in the combustion chamber is carried out expedient manner by a direct combustion chamber pressure sensor or a structure-borne sound sensor. The pressure changes are evaluated in a time window after the laser pulse in which due to a plasma expansion in the combustion chamber to a pressure increase is expected. The detected signals are expediently subjected to a filtering, in particular a high-pass filtering, to recognize only the highly dynamic signals. The so filtered Signals are then relative their peak values and / or re the energy content in the frequency domain and / or after a Rectification and summation evaluated.
Zeichnungendrawings
Ausführungsbeispiele der Erfindung werden in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigenembodiments The invention is illustrated in the drawings and in the following Description closer explained. Show it
Beschreibungdescription
In
der
Die
Entzündung
des in dem Brennraum
In
der
In
der
Das
Verfahren beginnt beim Verfahrensschritt
In
dem Schritt
Als
weitere Alternative kann im Schritt
Die verschiedenen Methoden zur Auswertung können auch miteinander kombiniert werden, bespielsweise kann sowohl der Spitzenwert als auch der aufintegrierte gleichgerichtete Wert betrachtet werden.The Different methods of evaluation can also be combined For example, both the peak and the integrated can be rectified value.
Auf
den Schritt
Entsprechend
dieser Information können dann
weitere Maßnahmen
ergriffen werden. Diese Maßnahmen
können
beispielsweise darin bestehen, dass die Energie, die für die Erzeugung
des Laserimpulses verwendet wird, erhöht wird. Weitere Maßnahmen
können
auch darin bestehen, dass die Brennkraftmaschine so betrieben wird,
dass eventuelle Ablagerungen auf der Laservorrichtung
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410012073 DE102004012073A1 (en) | 2004-03-12 | 2004-03-12 | Ignition control device for a combustion engine using laser impulse ignition evaluates pressure changes in the combustion chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410012073 DE102004012073A1 (en) | 2004-03-12 | 2004-03-12 | Ignition control device for a combustion engine using laser impulse ignition evaluates pressure changes in the combustion chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004012073A1 true DE102004012073A1 (en) | 2005-09-29 |
Family
ID=34895268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410012073 Withdrawn DE102004012073A1 (en) | 2004-03-12 | 2004-03-12 | Ignition control device for a combustion engine using laser impulse ignition evaluates pressure changes in the combustion chamber |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004012073A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012776A1 (en) * | 2005-03-19 | 2006-09-21 | Bayerische Motoren Werke Ag | Motor vehicles petrol engine`s combustion chamber gas dynamic effects identifying method, involves identifying effects based on parameter at existence of effects, where parameter correlates with coil voltage and current |
WO2012152470A1 (en) * | 2011-05-10 | 2012-11-15 | Robert Bosch Gmbh | Method and control unit for operating an internal combustion engine |
GB2527361A (en) * | 2014-06-20 | 2015-12-23 | John Anthony King | Fuel delivery and ignition system |
-
2004
- 2004-03-12 DE DE200410012073 patent/DE102004012073A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005012776A1 (en) * | 2005-03-19 | 2006-09-21 | Bayerische Motoren Werke Ag | Motor vehicles petrol engine`s combustion chamber gas dynamic effects identifying method, involves identifying effects based on parameter at existence of effects, where parameter correlates with coil voltage and current |
DE102005012776B4 (en) * | 2005-03-19 | 2020-07-02 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for identifying gas dynamic effects |
WO2012152470A1 (en) * | 2011-05-10 | 2012-11-15 | Robert Bosch Gmbh | Method and control unit for operating an internal combustion engine |
GB2527361A (en) * | 2014-06-20 | 2015-12-23 | John Anthony King | Fuel delivery and ignition system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |