DE10232356A1 - Method for controlling injectors of a fuel metering system of an internal combustion engine - Google Patents
Method for controlling injectors of a fuel metering system of an internal combustion engine Download PDFInfo
- Publication number
- DE10232356A1 DE10232356A1 DE10232356A DE10232356A DE10232356A1 DE 10232356 A1 DE10232356 A1 DE 10232356A1 DE 10232356 A DE10232356 A DE 10232356A DE 10232356 A DE10232356 A DE 10232356A DE 10232356 A1 DE10232356 A1 DE 10232356A1
- Authority
- DE
- Germany
- Prior art keywords
- injection
- injector
- internal combustion
- combustion engine
- injectors
- 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.)
- Ceased
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2464—Characteristics of actuators
- F02D41/2467—Characteristics of actuators for injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2422—Selective use of one or more tables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
-
- 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Ein Verfahren zur Steuerung von Injektoren eines Kraftstoffzumeßsystems einer Brennkraftmaschine, bei dem mittels eines Drucksensors der Einspritzbeginn und das Einspritzende und hieraus die Einspritzzeit, die ein Maß für die eingespritzte Kraftstoffmenge ist, bestimmt wird, ist gekennzeichnet durch die Schritte: DOLLAR A - in wenigstens einem Betriebspunkt der Brennkraftmaschine werden der Einspritzbeginn und das Einspritzende mit Werten des vorzugsweise in einem individuellen Kennfeld des Injektors gespeicherten Einspritzbeginns und des Einspritzendes dieses Betriebspunkts verglichen, DOLLAR A - bei einer Abweichung werden der Einspritzbeginn und/oder die Einspritzdauer so korrigiert, daß die Abweichung verschwindet, DOLLAR A - die Korrekturwerte werden gespeichert.A method for controlling injectors of a fuel metering system of an internal combustion engine, in which the start of injection and the end of injection, and therefrom the injection time, which is a measure of the amount of fuel injected, is determined by means of a pressure sensor, is characterized by the steps: DOLLAR A - in at least one Operating point of the internal combustion engine, the start of injection and the end of injection are compared with values of the start of injection and the end of injection of this operating point, which is preferably stored in an individual map of the injector, DOLLAR A - in the event of a deviation, the start of injection and / or the injection duration are corrected so that the deviation disappears, DOLLAR A - the correction values are saved.
Description
Stand der TechnikState of the art
Die Erfindung betrifft ein Verfahren zur Steuerung von Injektoren eines Kraftstoffzumeßsystems einer Brennkraftmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method to control injectors of a fuel metering system Internal combustion engine according to the preamble of Claim 1.
Ein Verfahren zur Steuerung einer
Brennkraftmaschine, bei dem mittels eines Drucksensors die in die
Brennräume
der Brennkraftmaschine eingespritzte Kraftstoffmenge und/oder der
Förderbeginn
ermittelt wird geht beispielsweise aus der
Aus der
Elektrisch betriebene Injektoren zur Einspritzung von Kraftstoff werden beispielsweise in sogenannten Common-Rail-Systemen verwendet. Bei der Speichereinspritzung "Common-Rail" sind Druckerzeugung und Einspritzung entkoppelt. Der Einspritzdruck wird unabhängig von der Motordrehzahl und der Einspritzmenge erzeugt und steht im "Rail" für die Einspritzung bereit. Einspritzzeitpunkt und -menge werden in einem elektronischen Motor-Steuergerät berechnet und von einem Injektor an jedem Zylinder der Brennkraftmaschine über ein ferngesteuertes Ventil umgesetzt.Electrically powered injectors for the injection of fuel, for example, in so-called Common rail systems used. With the common rail accumulator injection, pressure generation and injection are involved decoupled. The injection pressure becomes independent of the engine speed and the injection quantity is generated and stands in the "rail" for the injection ready. Injection time and quantity are recorded in an electronic Engine control unit calculated and from one injector to each cylinder of the internal combustion engine remote-controlled valve implemented.
Derartige Injektoren besitzen aufgrund ihrer mechanischen Fertigungstoleranzen unterschiedliche Mengenkennfelder. Unter einem Mengenkennfeld ist die Beziehung zwischen Einspritzmenge, Raildruck und Ansteuerzeit zu verstehen. Dies hat zur Folge, daß trotz elektrisch definierter Steuerung jeder einzelne Injektor den Verbrennungsraum mit unterschiedlichen Mengen an Kraftstoff füllt.Such injectors have due to their mechanical manufacturing tolerances different quantity maps. The relationship between injection quantity and rail pressure is under a quantity map and control time to understand. As a result, despite electrically defined control of each individual injector the combustion chamber with different amounts of fuel.
Um nun einen möglichst geringen Kraftstoffverbrauch unter Einhaltung strenger Abgasnormen zu erreichen, dürfen die Injektoren im Betrieb nur sehr geringe Toleran zen im Hinblick auf die Einspritzmenge aufweisen. Diese geforderten geringen Toleranzen können aufgrund der mechanischen Fertigungstoleranzen nicht eingehalten werden. Um dennoch eine definierte Einspritzmenge bei den Injektoren sicherzustellen, werden die Injektoren nach der Fertigung an charakteristischen Arbeitspunkten auf ihre Einspritzmenge vermessen und in Klassen eingeordnet. Die jeweilige Klasse muß im Betrieb der Brennkraftmaschine dem Motor-Steuergerät bekannt sein, so daß die Steuerung an die speziellen Merkmale der Klasse injektorspezifisch angepaßt werden kann. Die Klasseninformationen werden auf dem Injektor gespeichert, beispielsweise durch verschiedene Codierung, wie etwa Barcode, durch Widerstände am Injektor oder durch Klartext auf dem Injektor.In order to keep fuel consumption as low as possible in compliance with strict emissions standards, the Injectors in operation with very low tolerances with regard to have the injection quantity. These required small tolerances can due to the mechanical manufacturing tolerances become. In order to achieve a defined injection quantity for the injectors ensure the injectors are characteristic after manufacture Measure working points on their injection quantity and in classes classified. The respective class must be in operation of the internal combustion engine the engine control unit be known so that the Control to the special characteristics of the class, injector-specific customized can be. The class information is stored on the injector, for example by different coding, such as barcode Resistances on Injector or by plain text on the injector.
Darüber hinaus ist es möglich, daß in den Injektoren elektronische Speichermöglichkeiten vorgesehen sind, in welchen beispielsweise die Klasseninformation gespeichert ist. Das Steuergerät kann diese Werte über eine Schnittstelle aus dem Injektor auslesen und im Folgebetrieb nutzen.In addition, it is possible that in the Electronic injectors are provided, in which, for example, the class information is stored. The control unit can over these values Read an interface from the injector and in subsequent operation use.
Die Klassifizierung von Injektoren erfolgt nun beispielsweise so, daß die Injektoren an mehreren Prüfpunkten bezüglich der Einspritzmengenzumessung geprüft werden. Dies geschieht vorzugsweise in unterschiedlichen Betriebszuständen der Brennkraftmaschine.The classification of injectors is now done, for example, so that the injectors at several test points in terms of the injection quantity metering are checked. This is preferably done in different operating states of the internal combustion engine.
Bei derartigen Common-Rail-Injektoren ist nun über die Lebensdauer eine Mengendrift zu beobachten, die indivi duell bei jedem Injektor unterschiedlich ausgeprägt ist und beispielsweise vom Lastprofil oder vom Injektortyp abhängt. Diese Mengendrift wirkt sich nachteilig in Bezug auf einen geringen Kraftstoffverbrauch, auf die Einhaltung strenger Abgasnormen wie auch nachteilig in Bezug beispielsweise auf den Geräuschpegel der Brennkraftmaschine aus.With such common rail injectors is over now to observe the lifespan of a quantity drift, the individual duel is different for each injector and, for example, the load profile or depends on the injector type. This quantity drift has an adverse effect on a small one Fuel consumption, such as compliance with strict emissions standards also disadvantageous in relation to, for example, the noise level the internal combustion engine.
Der Erfindung liegt daher das Problem zugrunde, die sich über die Laufzeit der Injektoren ergebende Mengendrift zu kompensieren und so den Kraftstoffverbrauch der Brennkraftmaschine über deren Laufzeit zu minimieren. Ferner sollen defekte Common-Rail-Injektoren auf einfache Weise erkannt werden.The invention is therefore the problem underlying that over to compensate for the runtime of the injectors and so the fuel consumption of the internal combustion engine over the Minimize runtime. Defective common rail injectors are also said can be easily recognized.
Diese Aufgabe wird bei einem gattungsgemäßen Verfahren zur Steuerung von Injektoren eines Kraftstoffzumeßsystems einer Brennkraftmaschine durch die Merkmale des Anspruchs 1 gelöst.This task is carried out in a generic method to control injectors of a fuel metering system an internal combustion engine solved by the features of claim 1.
Durch Vergleich des mittels des Drucksensors erfaßten Einspritzbeginns und des Einspritzendes mit vorzugsweise in einem Kennfeld gespeicherten Werten des Einspritzbeginns und des Einspritzendes in wenigstens einem Betriebspunkt der Brennkraftmaschine und durch die Korrektur des Einspritzbeginns und/oder der Einspritzdauer bei einer Abweichung, derart, daß diese Abweichung verschwindet und Speichern dieser Korrekturwerte, ist eine Korrektur der sich über die Lebensdauer der Injektoren ergebenden Mengendrift im gesamten Kennfeld möglich.By comparing that using the pressure sensor detected Start of injection and end of injection with preferably in one Map stored values of the start of injection and the end of injection in at least one operating point of the internal combustion engine and through the correction of the start of injection and / or the injection duration a deviation such that this Deviation disappears and saving these correction values is one Correction of yourself quantity drift resulting in the injectors in the entire map possible.
Durch das erfindungsgemäße Verfahren wird so ein geschlossener Mengenregelkreis geschaffen, der über die Lebensdauer der Common-Rail-Injektoren entstehende Mengendrifts auszugleichen imstande ist.The method according to the invention thus creates a closed quantity control loop which is able to compensate for quantity drifts occurring over the life of the common rail injectors de is.
Darüber hinaus wird hierdurch eine erhebliche Kostenreduzierung bei der Wartung der Brennkraftmaschine durch Lokalisierung von defekten Injektoren und gezielten Tausch dieser Injektoren ermöglicht. Ein Defekt des Injektors wird dabei auf einfache Weise durch Auslesen der Korrekturwerte aus dem Speicher ermöglicht.In addition, this will result in a considerable cost reduction in the maintenance of the internal combustion engine by locating defective injectors and targeted replacement of these injectors. A defect in the injector can be easily read out which enables correction values from the memory.
Vorzugsweise wird das individuelle Kennlinienfeld jedes Injektors auf der Basis der gespeicherten Korrekturwerte verändert. Auf diese Weise werden von der Lebensdauer abhängige Mengendrifts der Injektoren kompensiert.Preferably the individual Characteristic field of each injector based on the saved correction values changed. In this way, the volume drifts of the injectors are dependent on the service life compensated.
Eine vorteilhafte Ausführungsform sieht vor, daß die Korrektur an einer vorgegebenen Anzahl von Betriebspunkten, vorzugsweise an mehreren Prüfpunkten vorgenommen wird, in denen ohnehin ein Injektormengenabgleich auf an sich bekannte Weise durchgeführt wird.An advantageous embodiment stipulates that the Correction at a predetermined number of operating points, preferably at several test points is carried out in which an injector quantity comparison anyway performed in a manner known per se becomes.
Der Druck kann beispielsweise mittels eines Raildrucksensors erfaßt werden. Dies hat den Vorteil, daß eine Kompensation der Mengendrifts während des Betriebs des Fahrzeugs kontinuierlich möglich ist.The pressure can, for example, by means of a rail pressure sensor detected become. This has the advantage of compensating for the volume drifts during the Operation of the vehicle is possible continuously.
Bei einer anderen Ausführungsform ist vorgesehen, daß der Druck in einer Druckleitung wenigstens eines Injek tors erfaßt wird. Hierbei ist vorteilhaft, daß auf einen Raildrucksensor verzichtet werden kann. Eine Mengenkorrektur oder ein Austausch eines defekten Injektors wird in diesem Falle bei Wartungen der Brennkraftmaschine vorgenommen.In another embodiment it is envisaged that the Pressure in a pressure line of at least one injector is detected. It is advantageous here that a rail pressure sensor can be dispensed with. A quantity correction or a defective injector will be replaced in this case during maintenance of the internal combustion engine.
Weitere Vorteile und Merkmale der Erfindung sind Gegenstand der nachfolgenden Beschreibung sowie der zeichnerischen Darstellung einiger Ausführungsbeispiele.Other advantages and features of Invention are the subject of the following description and the graphic representation of some embodiments.
In der Zeichnung zeigen:The drawing shows:
Beschreibung der Ausführungsbeispieledescription of the embodiments
In
Die Anordnung umfaßt eine
Hochdruckpumpe
An dem Injektor
Die von jedem Injektor
Um eine Kraftstoffmengenzumessung im gesamten Betriebsbereich der Brennkraftmaschine und des Injektors zu ermöglichen, werden die Abgleichwerte zwischen den durch die Prüfpunkte definierten Stützstellen interpoliert.To measure the amount of fuel in the entire operating range of the internal combustion engine and the injector to allow are the adjustment values between those by the test points defined support points interpolated.
Über
die Lebensdauer der Injektoren ist nun eine Mengendrift dahingehend
zu beobachten, daß sich über die
Lebensdauer der Injektoren die ursprünglich durch Festlegung des
Einspritzbeginns und der Einspritzdauer festgelegte Einspritzmenge verändert. Um
diese Mengendrift zu kompensieren wird der Raildruck erfaßt, beispielsweise
durch einen in der Hochdruckleitung
In
Nachdem ein Spannungsimpuls an dem Common-Rail-Injektor
angelegt wurde beginnt nach einer Zeit t1 der Einspritzvorgang,
der nach einer Zeit t2 wieder endet (siehe die Kurve Einspritzrate über der
Zeit). Sowohl der Einspritzbeginn als auch das Einspritzende können durch
Messung des Leitungsdrucks erfaßt
werden. Eine Einspritzung löst
nämlich wie
in
Mithilfe der so erfaßten Korrekturwerte
wird vorzugsweise das individuelle Kennfeld des Injektors, welches
in dem Motor-Steuergerät
Die wahlweise Anordnung des Drucksensors
Die Anordnung des Drucksensors
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10232356A DE10232356A1 (en) | 2002-07-17 | 2002-07-17 | Method for controlling injectors of a fuel metering system of an internal combustion engine |
PCT/DE2003/002003 WO2004016928A1 (en) | 2002-07-17 | 2003-06-17 | Method for controlling the injectors of a fuel measuring system in an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10232356A DE10232356A1 (en) | 2002-07-17 | 2002-07-17 | Method for controlling injectors of a fuel metering system of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10232356A1 true DE10232356A1 (en) | 2004-01-29 |
Family
ID=29796405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10232356A Ceased DE10232356A1 (en) | 2002-07-17 | 2002-07-17 | Method for controlling injectors of a fuel metering system of an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10232356A1 (en) |
WO (1) | WO2004016928A1 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2869361A1 (en) * | 2004-04-22 | 2005-10-28 | Denso Corp | COMMON RAIL FUEL INJECTION SYSTEM |
FR2876743A1 (en) * | 2004-10-16 | 2006-04-21 | Bosch Gmbh Robert | METHOD FOR CORRECTING THE INJECTION BEHAVIOR OF AN INJECTOR |
WO2006048372A1 (en) * | 2004-11-04 | 2006-05-11 | Robert Bosch Gmbh | Device and method for correction of the injection behaviour of an injector |
EP1564394A3 (en) * | 2004-02-13 | 2006-06-07 | Robert Bosch Gmbh | Method and device for controlling an internal combustion engine |
WO2006094516A1 (en) * | 2004-02-12 | 2006-09-14 | Mtu Friedrichshafen Gmbh | Process for controlling and regulating an internal combustion engine |
EP1862659A1 (en) * | 2006-05-30 | 2007-12-05 | Peugeot Citroen Automobiles SA | Method and device for correcting the flow of a so-called pilot fuel injection in a direct-injection diesel engine of the common rail type, and engine comprising such a device |
DE102006042098B3 (en) * | 2006-09-07 | 2008-05-21 | Siemens Ag | Method for determining a correction of a partial injection quantity of an internal combustion engine |
DE102007060768A1 (en) | 2007-12-17 | 2009-06-18 | Robert Bosch Gmbh | Method for drift detection and drift compensation of injectors for injecting fuel into combustion chambers of internal combustion engine, involves carrying out characteristic extraction from frequency spectrum |
WO2009141183A1 (en) * | 2008-05-21 | 2009-11-26 | Continental Automotive Gmbh | Method for the injector-individual adaption of the injection time of motor vehicles |
WO2013068173A1 (en) * | 2011-11-08 | 2013-05-16 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine |
DE102012011484A1 (en) * | 2012-06-09 | 2013-12-12 | Volkswagen Aktiengesellschaft | Method for monitoring injection operation for internal combustion engine mounted in vehicle, involves determining injection start timing and injection end timing in accordance with the detected time pressure pattern |
CN103635678A (en) * | 2011-04-19 | 2014-03-12 | 大陆汽车有限公司 | Method for operation of internal combustion engine, and internal combustion engine |
DE10309720B4 (en) * | 2003-03-06 | 2014-04-24 | Robert Bosch Gmbh | Method and device for multidrug compensating control of injectors of a fuel metering system of an internal combustion engine |
DE102013211728A1 (en) | 2013-06-20 | 2014-12-24 | Mtu Friedrichshafen Gmbh | Method for correcting the start of injection of injectors of an internal combustion engine and control device for an internal combustion engine |
WO2014202202A1 (en) * | 2013-06-20 | 2014-12-24 | Mtu Friedrichshafen Gmbh | Method and control system for correcting the injection duration of injectors of an internal combustion engine |
DE102013224706A1 (en) | 2013-12-03 | 2015-06-03 | Robert Bosch Gmbh | Method for calculating the injection rate profile |
DE102014208992A1 (en) | 2014-05-13 | 2015-11-19 | Robert Bosch Gmbh | Method for calibrating post-injections in a fuel injection system of an internal combustion engine, in particular of a motor vehicle |
DE102007062279B4 (en) * | 2007-12-21 | 2017-04-13 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
DE10317654B4 (en) | 2003-04-17 | 2018-05-30 | Robert Bosch Gmbh | Method and device for drift-compensating control of injectors of a fuel metering system of an internal combustion engine |
DE102011051012B4 (en) | 2010-06-18 | 2018-08-02 | Denso Corporation | Fuel injection state detecting device |
DE102021211924A1 (en) | 2020-10-31 | 2022-05-05 | Bosch Limited | Method for identifying a drifting injector in a fuel injection system |
DE102021211842A1 (en) | 2020-10-30 | 2022-05-05 | Bosch Limited | Method for identifying a drifting injector in a fuel injection system |
Families Citing this family (1)
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JP4782718B2 (en) * | 2007-03-26 | 2011-09-28 | 株式会社日本自動車部品総合研究所 | Fuel injection control device and fuel injection device |
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JPH1047137A (en) * | 1996-08-05 | 1998-02-17 | Nippon Soken Inc | Control method for fuel injection timing of internal combustion engine and its device |
JP3695046B2 (en) * | 1997-02-07 | 2005-09-14 | いすゞ自動車株式会社 | Engine fuel injection method and apparatus |
JPH11101149A (en) * | 1997-09-26 | 1999-04-13 | Isuzu Motors Ltd | Fuel injection method and device thereof for engine |
DE19757293C2 (en) * | 1997-12-22 | 1999-11-25 | Siemens Ag | Device for determining the start of injection in a direct injection internal combustion engine |
GB0104215D0 (en) * | 2001-02-21 | 2001-04-11 | Delphi Tech Inc | Control method |
US20020152985A1 (en) * | 2001-04-20 | 2002-10-24 | Wolff Peter U. | System, apparatus including on-board diagnostics, and methods for improving operating efficiency and durability of compression ignition engines |
-
2002
- 2002-07-17 DE DE10232356A patent/DE10232356A1/en not_active Ceased
-
2003
- 2003-06-17 WO PCT/DE2003/002003 patent/WO2004016928A1/en not_active Application Discontinuation
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10309720B4 (en) * | 2003-03-06 | 2014-04-24 | Robert Bosch Gmbh | Method and device for multidrug compensating control of injectors of a fuel metering system of an internal combustion engine |
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