DE102007048667A1 - Device for controlling electrical actuators for fuel injection or for adjusting rail pressure of common rail system of internal-combustion engine, has control signal of controlling unit that is consolidated at summing element - Google Patents
Device for controlling electrical actuators for fuel injection or for adjusting rail pressure of common rail system of internal-combustion engine, has control signal of controlling unit that is consolidated at summing element Download PDFInfo
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- DE102007048667A1 DE102007048667A1 DE102007048667A DE102007048667A DE102007048667A1 DE 102007048667 A1 DE102007048667 A1 DE 102007048667A1 DE 102007048667 A DE102007048667 A DE 102007048667A DE 102007048667 A DE102007048667 A DE 102007048667A DE 102007048667 A1 DE102007048667 A1 DE 102007048667A1
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- engine
- control
- combustion engine
- control signal
- internal combustion
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0205—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system
- G05B13/024—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric not using a model or a simulator of the controlled system in which a parameter or coefficient is automatically adjusted to optimise the performance
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/141—Introducing closed-loop corrections characterised by the control or regulation method using a feed-forward control element
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1413—Controller structures or design
- F02D2041/1422—Variable gain or coefficients
-
- 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
- F02D41/3836—Controlling the fuel pressure
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Computation (AREA)
- Medical Informatics (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Ansteuerung von elektrischen Aktoren, insbesondere von Aktoren zur Kraftstoffeinspritzung in eine Brennkraftmaschine oder zur Einstellung des Raildrucks eines Commonrailsystems einer Brennkraftmaschine gemäß dem Oberbegriff des unabhängigen Anspruchs 1.The The invention relates to a device for controlling electrical Actuators, in particular of actuators for fuel injection in an internal combustion engine or for adjusting the rail pressure of a Commonrailsystems an internal combustion engine according to the Preamble of independent claim 1.
Bei heutigen Ansteuerkonzepten für induktive Aktoren, beispielsweise für Magnetventile von Einspritzdüsen werden von einer zentralen Recheneinheit mittels Kennfelderwerte für den Ansteuerverlauf (Ansteuerbeginn und – dauer oder – ende) in Steuersignale für den Endstufenbaustein umgesetzt.at Today's control concepts for inductive actuators, for example for solenoid valves of injectors are from a central processing unit by means of characteristic values for the activation process (tax start and duration or end) converted into control signals for the power amplifier module.
Aus
der
Betriebsparameter, die wesentlichen Einfluss auf die Kraftstoffeinspritzung haben und deren Änderungen berücksichtigt werden soll, sind die Motordrehzahl und die Motorlast. Die Änderung kann beispielsweise in Form einer Differentiation nach der Zeit, Integration über die Zeit, oder einfach auch durch Quadrieren des Betriebsparameters berücksichtigt werden. Auch ist eine Berücksichtigung durch Vergleich mit Sollwerten oder mit zeitlich vorangegangenen und erfassten Werten bereits in der Fachwelt bekannt.Operating parameters, which have a significant impact on fuel injection and whose changes are to be taken into account are the engine speed and the engine load. The change can be, for example in the form of a differentiation after time, integration over the time, or simply by squaring the operating parameter be taken into account. Also, a consideration by comparison with setpoints or with previous ones and captured values already known in the art.
Auch bei Common Rail-Motoren besitzt der Bestromungsbeginn der Magnetventile entscheidenden Einfluss auf die motorische Verbrennung. Der Bestromungsbeginn der Magnetventile legt den Einspritzbeginn des Kraftstoffs in den Brennraum fest. Allgemein kann festgehalten werden, dass der Einspritzzeitpunkt entscheidende Auswirkungen auf den Kraftstoffverbrauch, die Abgasemissionen und das Verbrennungsgeräusch besitzt. Verallgemeinert führt eine späte Kraftstoffeinspritzung zu niedrigen NOx-Emissionen aber auch zu erhöhtem Kraftstoffverbrauch. Eine Verlagerung des Einspritzbeginns nach „früh" resultiert in einer Reduzierung des Kraftstoffverbrauchs bei gleichzeitiger Erhöhung der NOx-Emissionen.Even with common rail engines, the start of energization of the solenoid valves has a decisive influence on engine combustion. The start of energization of the solenoid valves determines the start of injection of the fuel into the combustion chamber. In general, it can be said that the injection timing has significant effects on fuel consumption, exhaust emissions and combustion noise. Generalized, late fuel injection results in low NO x emissions but also in increased fuel economy. Shifting the start of injection to "early" results in a reduction in fuel consumption while increasing NO x emissions.
Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zur Ansteuerung von elektrischen Aktoren, insbesondere von Aktoren zur Kraftstoffeinspritzung in eine Brennkraftmaschine oder zur Einstellung des Raildrucks eines Common Railsystems einer Brennkraftmaschine bereitzustellen, mit dieser ein Optimum für den Einspritz- bzw. Bestromungsbeginn gefunden werden kann, das allen Anforderungen gerecht wird und den gegenläufigen Zusammenhängen zwischen Zeitpunkt der Kraftstoffeinspritzung, NOx-Emissionen und erhöhtem Kraftstoffverbrauch Rechnung trägt. Um einen sicheren, wirtschaftlichen und emissionsgerechten Betrieb des Motors zu gewährleisten, muss zudem der Einspritz- bzw. Bestromungsbeginn in Abhängigkeit der Motorlast und Motordrehzahl verstellbar sein.Proceeding from this, the present invention seeks to provide a device for controlling electric actuators, in particular of actuators for fuel injection in an internal combustion engine or for adjusting the rail pressure of a Common Railsystems an internal combustion engine, with this optimum for the injection or Bestromungsbeginn be found which meets all requirements and takes account of the contradictory relationships between the time of fuel injection, NO x emissions and increased fuel consumption. In addition, to ensure safe, economical and emission-appropriate operation of the engine, the start of injection or energization must be adjustable as a function of engine load and engine speed.
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des unabhängigen Anspruchs 1 gelöst.These The object is achieved by the characterizing Characteristics of independent claim 1 solved.
Dadurch dass das Steuersignal der Steuereinheit an einem Summierglied mit einem Stellsignal eines Regelsystems, das ständig Istwert einer Regelgröße mit Sollwert einer Führungsgröße hinsichtlich des Betriebszustandes der Brennkraftmaschine vergleicht und in Abhängigkeit einer Regelabweichung ein Stellsignal erzeugt, zusammenführbar ist, und der Ausgang des Summiergliedes den oder die Aktoren ansteuert, wird bei einer Vorrichtung zur Ansteuerung von elektrischen Aktoren, insbesondere von Aktoren zur Kraftstoffeinspritzung in eine Brennkraftmaschine oder zur Einstellung des Raildrucks eines Common Railsystems einer Brennkraftmaschine, die eine elektrische Steuereinheit umfasst, mit dieser eine dynamische Betriebszustandsänderung der Brennkraftmaschine in Abhängigkeit von der Motorlast und Motordrehzahl erfassbar und ein Steuersignal mittels Kennfelder ableitbar ist, sichergestellt, dass die Kraftstoffeinspritzung in einen Brennraum der Brennkraftmaschine optimal unter Berücksichtigung von Betriebsgrößen der Brennkraftmaschine gewährleistet ist und zudem der Einspritz- bzw. Bestromungsbeginn in Abhängigkeit der Motorlast und Motordrehzahl verstellbar ist.Thereby that the control signal of the control unit to a summer with a control signal of a control system, the constant actual value a controlled variable with setpoint of a reference variable in terms of the operating condition of the internal combustion engine compares and depending on a control deviation, a control signal is generated, merge, and the output of the summing the one or more actuators, is in a device for controlling electric actuators, in particular of actuators for fuel injection in an internal combustion engine or for adjusting the rail pressure of a Common Railsystems an internal combustion engine, which is an electrical Control unit includes, with this a dynamic operating state change the internal combustion engine in dependence on the engine load and engine speed detectable and a control signal by means of maps is derivable, ensure that the fuel injection in a combustion chamber of the internal combustion engine optimally under consideration is guaranteed by operating variables of the internal combustion engine and also the injection or energization start in dependence the engine load and engine speed is adjustable.
Dem gegenläufigen voranbeschriebenen Zusammenhang zwischen Zeitpunkt der Kraftstoffeinspritzung, Kraftstoffverbrauch und NOx-Emissionen kann Rechnung getragen werden.The contradictory relationship described above between the time of fuel injection, fuel consumption and NO x emissions can be taken into account.
Weitere Ausgestaltungen der erfindungsgemäßen Vorrichtung zur Ansteuerung von elektrischen Aktoren sind im Folgenden näher beschrieben und in der Figur gezeigt.Further Embodiments of the device according to the invention for the control of electrical actuators are closer in the following described and shown in the figure.
Es
zeigt die einzige Figur einen Signalflussplan einer erfindungsgemäßen
Vorrichtung, bei der eine elektrische Steuereinheit
Das
Steuersignal
Ein
Regelkreis besteht im Allgemeinen aus der Regelstrecke und der Regeleinrichtung.
Charakteristisch für die Regelung ist der geschlossene
Wirkungsablauf: Der Istwert der Regelgröße (NOx-Messwert) wird ständig mit dem
Sollwert der Führungsgröße
Die Funktionseinheitssteuerung stellt sicher, dass zusätzlich zur Regelung der Einspritz- bzw. Bestromungsbeginn in Abhängigkeit der Motorlast oder Drehzahl, d. h. in Abhängigkeit einer dynamischen Betriebszustandsänderung der Brennkraftmaschine verstellbar ist.The Functional unit control ensures that additional for controlling the start of injection or energization depending on the engine load or speed, d. H. depending on one dynamic operating state change of the internal combustion engine adjustable is.
Im
Regelsystem
Das
Regelsystem
Der
Controller nimmt die Eingangsgröße „normierter
NOx-Wert" aus gemessenem NOx-Wert
Mit
entsprechendem Motorverbau der Messtechnik ist es also möglich,
die NOX-Emissionen zu erfassen. In der Regel ist der zulässige
NOx-Wert abhängig von Motortyp,
Motorlast, Motordrehzahl, Einsatzort und Einsatzart. Ein NOx-Wert ist immer an die entsprechend dem
Abgas vorhandene O2-Konzentration gebunden,
neben der Festlegung, ob feuchtes oder trockenes Abgas gemessen
wird. Die Sauerstoffkonzentration im Abgas ist u. a. vom Motorbetriebszustand
abhängig. Um also einen Bezug zwischen zulässigem
NOx-Wert und gemessenem NOx-Wert
herzustellen ist eine Auswerte-Einheit in Form des Controllers
In
Abhängigkeit des Motorbetriebspunktes (Drehzahl/Last) werden
dem Controller
Die
Steuereinheit
Sowohl
zwischen Steuereinheit
Das
Differenzierglied
Der
Ausgang der Steuereinheit
Das
Vorhandensein von gleichzeitig Regelung und Steuerung ist nötig,
da in Abhängigkeit des verwendeten NOx-Sensors
die Möglichkeit besteht, dass die Regelung kurzzeitig oder
längerfristig abgeschaltet werden muss. Dies kann darin
begründet sein, dass bei einem Fehler in der Regelung
Generell kann nicht nur der Bestromungsbeginn als Zielgröße herangezogen werden, sondern gegebenenfalls zusätzlich auch noch der Raildruck.As a general rule can not only the start of the energization as a target size be used, but optionally in addition also the rail pressure.
- 11
- elektrischer Aktorelectrical actuator
- 22
- elektrische Steuereinheitelectrical control unit
- 33
- Summiergliedsumming
- 44
- Regelsystemcontrol system
- 55
- Istwert einer Regelgrößeactual value a controlled variable
- 66
- Sollwert einer Führungsgrößesetpoint a leader
- 77
- Stellsignalactuating signal
- 88th
- Controllercontroller
- 99
- PI-ReglerPI controller
- 1010
- Kennfelder (Steuerung)maps (Control)
- 1111
- Kennfelder (Regelung)maps (Regulation)
- 1212
- Gebergiver
- 1313
- Elektrisches Bauteilelectrical component
- 1414
- Steuersignalcontrol signal
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004051273 A1 [0003] DE 102004051273 A1 [0003]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048667A DE102007048667B4 (en) | 2007-10-10 | 2007-10-10 | Device for controlling electrical actuators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048667A DE102007048667B4 (en) | 2007-10-10 | 2007-10-10 | Device for controlling electrical actuators |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007048667A1 true DE102007048667A1 (en) | 2009-04-16 |
DE102007048667B4 DE102007048667B4 (en) | 2012-03-22 |
Family
ID=40435340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007048667A Expired - Fee Related DE102007048667B4 (en) | 2007-10-10 | 2007-10-10 | Device for controlling electrical actuators |
Country Status (1)
Country | Link |
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DE (1) | DE102007048667B4 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026556A1 (en) * | 2009-05-28 | 2010-12-02 | Ford Global Technologies, LLC, Dearborn | Method for holding nitrogen oxide emissions of internal combustion engine of motor vehicle, involves modifying basic setting point of combustion engine depending on deviation of monitored nitrogen oxide content from stored reference value |
DE102009037254A1 (en) | 2009-08-12 | 2011-02-17 | Man Diesel & Turbo Se | Method for controlling operation of internal combustion engine, involves defining control factor for controlling operation of internal combustion engine |
DE102011004190B4 (en) | 2011-02-16 | 2023-10-05 | Bayerische Motoren Werke Aktiengesellschaft | Method for specifying injection pulses |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3603137C2 (en) * | 1986-02-01 | 1994-06-01 | Bosch Gmbh Robert | Method and device for controlling / regulating operating parameters of an internal combustion engine |
DE10046570C2 (en) * | 2000-09-20 | 2003-01-30 | Siemens Ag | Control circuit for an electrically controllable valve |
DE10329328B4 (en) * | 2003-06-30 | 2005-10-13 | Siemens Ag | Method for controlling an internal combustion engine |
DE102004051273A1 (en) | 2004-10-21 | 2006-04-27 | Robert Bosch Gmbh | Fuel injection control method for internal combustion engine, involves controlling fuel injection in internal combustion engine based on dynamic changes in operating condition of engine, which can be pre-injection or post-injection |
DE102006002738A1 (en) * | 2006-01-20 | 2007-08-02 | Robert Bosch Gmbh | Control system for fuel injectors, at a motor common rail assembly, uses signals and adapted correction values to maintain a long-term consistent performance without sensors/actuators |
DE112005003241T5 (en) * | 2004-12-23 | 2007-10-31 | Cummins, Inc., Columbus | Apparatus, system and method for minimizing NOx in exhaust gases |
-
2007
- 2007-10-10 DE DE102007048667A patent/DE102007048667B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3603137C2 (en) * | 1986-02-01 | 1994-06-01 | Bosch Gmbh Robert | Method and device for controlling / regulating operating parameters of an internal combustion engine |
DE10046570C2 (en) * | 2000-09-20 | 2003-01-30 | Siemens Ag | Control circuit for an electrically controllable valve |
DE10329328B4 (en) * | 2003-06-30 | 2005-10-13 | Siemens Ag | Method for controlling an internal combustion engine |
DE102004051273A1 (en) | 2004-10-21 | 2006-04-27 | Robert Bosch Gmbh | Fuel injection control method for internal combustion engine, involves controlling fuel injection in internal combustion engine based on dynamic changes in operating condition of engine, which can be pre-injection or post-injection |
DE112005003241T5 (en) * | 2004-12-23 | 2007-10-31 | Cummins, Inc., Columbus | Apparatus, system and method for minimizing NOx in exhaust gases |
DE102006002738A1 (en) * | 2006-01-20 | 2007-08-02 | Robert Bosch Gmbh | Control system for fuel injectors, at a motor common rail assembly, uses signals and adapted correction values to maintain a long-term consistent performance without sensors/actuators |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026556A1 (en) * | 2009-05-28 | 2010-12-02 | Ford Global Technologies, LLC, Dearborn | Method for holding nitrogen oxide emissions of internal combustion engine of motor vehicle, involves modifying basic setting point of combustion engine depending on deviation of monitored nitrogen oxide content from stored reference value |
DE102009037254A1 (en) | 2009-08-12 | 2011-02-17 | Man Diesel & Turbo Se | Method for controlling operation of internal combustion engine, involves defining control factor for controlling operation of internal combustion engine |
DE102011004190B4 (en) | 2011-02-16 | 2023-10-05 | Bayerische Motoren Werke Aktiengesellschaft | Method for specifying injection pulses |
Also Published As
Publication number | Publication date |
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DE102007048667B4 (en) | 2012-03-22 |
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Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL & TURBO SE, 86153 AUGSBURG, DE |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |