WO2012104122A1 - Procédé et dispositif de modélisation d'un rendement de couple d'un moteur à combustion pour une injection multiple de carburant dans un cycle de combustion - Google Patents

Procédé et dispositif de modélisation d'un rendement de couple d'un moteur à combustion pour une injection multiple de carburant dans un cycle de combustion Download PDF

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Publication number
WO2012104122A1
WO2012104122A1 PCT/EP2012/050412 EP2012050412W WO2012104122A1 WO 2012104122 A1 WO2012104122 A1 WO 2012104122A1 EP 2012050412 W EP2012050412 W EP 2012050412W WO 2012104122 A1 WO2012104122 A1 WO 2012104122A1
Authority
WO
WIPO (PCT)
Prior art keywords
crankshaft
injection
angle
internal combustion
combustion engine
Prior art date
Application number
PCT/EP2012/050412
Other languages
German (de)
English (en)
Inventor
Frank Ottusch
Jean-Philippe Bronner
Sabine Wegener
Stefan Gottlieb
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201280006972.0A priority Critical patent/CN103339361B/zh
Publication of WO2012104122A1 publication Critical patent/WO2012104122A1/fr

Links

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
    • F02D41/30—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
    • F02D41/402—Multiple injections
    • 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
    • F02D41/1497—With detection of the mechanical response of the engine
    • 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
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
    • 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
    • F02D2200/1002—Output torque
    • F02D2200/1004—Estimation of the output torque
    • 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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • 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

Definitions

  • the invention relates to a method for modeling a torque efficiency of an internal combustion engine for a multiple fuel injection in a combustion cycle, in which the torque efficiency of each single injection of the multiple fuel injection in dependence on a first angle of a crankshaft of the internal combustion engine during the single injection and a second crankshaft Wnkel the internal combustion engine is determined during the same single injection and an apparatus for performing the method.
  • the torque efficiency is understood to mean how much of the burned fuel is converted into a torque of the internal combustion engine, which is used to drive a motor vehicle. It is known that for modeling the torque efficiency a first angle of the crankshaft of the internal combustion engine at the beginning of the fuel injection and a second angle of the crankshaft of the internal combustion engine at the end of the fuel injection are used to estimate the torque efficiency. In addition, it is also possible to consider a third angle of the crankshaft of the internal combustion engine, which occupies this at a middle time during the injection process. However, the accuracy of the torque of the internal combustion engine determined by means of these different angles is insufficient to sufficiently model the efficiency of the internal combustion engine so that it approximately matches measured values.
  • the invention is thus based on the object of specifying a method for modeling a torque efficiency of an internal combustion engine for a multiple fuel injection in a combustion cycle, which has a high accuracy.
  • this object is achieved in that a weighted average is formed from the first angle of a crankshaft of the internal combustion engine during the individual injection and the second angle of the crankshaft of the internal combustion engine during the same single injection, wherein the weighted average of the individual injections forming the multiple fuel injection in the combustion cycle of an estimate of the Tornenhovsgrades be supplied.
  • the second angle of the crankshaft is weighted more heavily than the first angle of the crankshaft.
  • a weighting factor for weighting the mean value is greater than 0.5.
  • the first angle of the crankshaft at the beginning of the individual injection and the second angle of the crankshaft at the end of the same single injection are determined.
  • a difference is formed from the second angle of the crankshaft at the end of the single injection and the first angle of the crankshaft at the beginning of the same single injection, which is multiplied by the weighting factor, the product of difference and weighting factor being the first Wnkel the crankshaft is added at the beginning of the single injection.
  • the thus determined weighted average value thus represents a significant influencing variable for modeling the torque efficiency of the internal combustion engine for a multiple-injection fuel injection system.
  • the weighted average of each individual injection is fed to a characteristic correction.
  • a plausibility of the weighted mean value is achieved, so that only meaningful values of the weighted mean value are passed on to the further processing.
  • weighted average values of the single injections forming the multiple fuel injection in the combustion stroke are added and supplied after the addition of the correction of an ignition angle of the internal combustion engine.
  • the use of the weighted mean value in the correction of the ignition angle of the internal combustion engine results in that the ignition angle is adjusted such that the torque engagement of the crankshaft is transferred without lifting.
  • a development of the invention relates to a device for modeling a torque efficiency of an internal combustion engine for a fuel injection in a combustion cycle, in which the torque efficiency of each individual injection of the multiple fuel injection in dependence on a first angle of a crankshaft of the internal combustion engine during the single injection and a second angle of the crankshaft of the internal combustion engine during the same single injection is determined.
  • means which form a weighted average of the first angle of the crankshaft of the internal combustion engine during the single injection and the second crankshaft angle of the internal combustion engine during the same single injection, the weighted averages being the more fuel - Special injection in the combustion cycle forming individual injections are fed to an estimate of the torque efficiency.
  • the use of the weighted average achieves a significant improvement in model accuracy compared to the start angle of the crankshaft of the injection, the end angle of the crankshaft of the injection, or an arithmetic mean from both angles of the crankshaft during the same combustion stroke.
  • Figure 1 schematic diagram of an internal combustion engine with a control unit.
  • Figure 2 an embodiment of the inventive method.
  • FIG. 1 shows a schematic diagram of an internal combustion engine 1, which is controlled by a control unit 2.
  • the internal combustion engine 1 consists of four cylinders 3, 4, 5, 6, which are connected to one another via a suction pipe 7.
  • Each cylinder 3, 4, 5, 6 has a connecting rod 3a, 4a, 5a, 6a connected to a crankshaft 9 and a fuel injection valve 10, of which only one is shown by way of example in FIG.
  • crankshaft 9 and the injection valve 10 and the throttle valve 8 are electrically connected to the control unit 2, which in response to the position of the crankshaft 9, the air supply via the throttle valve 8 and the fuel supply via the injection valve 10 in the cylinders 3, 4, 5th , 6 sets.
  • the crankshaft 9 which is connected to the connecting rods 3a, 4a, 5a, 6a, driven.
  • the crankshaft 9 carries out a rotational movement, wherein the rotational movement of the crankshaft 9 thus generated is used to drive a motor vehicle.
  • control unit 2 forms a weighted mean value which is used to estimate the torque efficiency or to correct the ignition angle which is caused by the crankshaft 9 is set, is used.
  • FIG. 1 One way to determine the weighted average is shown in FIG.
  • a first angle of the crankshaft 9 of the internal combustion engine is detected, which represents the angle of the crankshaft 9 at which the injection begins.
  • a second angle of the crankshaft 9 is determined in block 102, at which the injection ends. From the first angle and the second angle, a difference is formed in block 103, which is multiplied in block 104 by a weighting factor x, which is stored in block 105 in control unit 2.
  • the weighting factor x is between 0.6 and 0.9.
  • the product formed in block 104 from the difference between the second and the first angle of the crankshaft 9 and the weighting factor x is determined in block 106 to the first angle of the crankshaft 9, which was measured in block 101, added.
  • the weighted mean value determined in block 106 is subjected to a characteristic correction in block 107.
  • the method described in connection with blocks 101 to 107 repeats for each individual injection that takes place during a combustion cycle of the internal combustion engine. Subsequently, the thus determined weighted average values of the individual injections, which form a multiple fuel injection within a combustion cycle of the internal combustion engine, are added. From this added weighted average, a correction of the ignition angle of the crankshaft 9 is now determined (block 108). This correction is made by the control unit 2, which controls the timing of the injection and the amount of fuel to be injected into the cylinders 3, 4, 5, 6.
  • the weighted average value of the individual injection formed in block 106 is subjected to a further characteristic correction in block 109. Subsequently, the weighted average values of the individual injections are added to a second weighted overall mean value. It can be assumed that the characteristic corrections made in blocks 107 and 109 are different in nature. In block 1 10, the second total mean value is now fed to an estimate of the torque efficiency of the internal combustion engine.

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)

Abstract

L'invention concerne un procédé de modélisation d'un rendement de couple d'un moteur à combustion pour une injection multiple dans un cycle de combustion, caractérisé en ce que le rendement de couple de chaque injection individuelle de l'injection multiple de carburant est déterminé en fonction d'un premier angle (101) d'un vilebrequin (9) du moteur à combustion interne pendant l'injection individuelle et d'un second angle (102) du vilebrequin (9) du moteur à combustion pendant la même injection individuelle. L'invention vise à améliorer la précision de modélisation du rendement de couple. A cet effet, une valeur moyenne pondérée (106) est obtenue à partir du premier angle (101) d'un vilebrequin (9) pendant l'injection individuelle et du second angle (102) du vilebrequin (9) pendant la même injection individuelle, les valeurs moyennes pondérées (106) des injections individuelles formant l'injection multiple de carburant lors du cycle de combustion étant transmises à un dispositif d'évaluation (110) du rendement de couple.
PCT/EP2012/050412 2011-02-02 2012-01-12 Procédé et dispositif de modélisation d'un rendement de couple d'un moteur à combustion pour une injection multiple de carburant dans un cycle de combustion WO2012104122A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280006972.0A CN103339361B (zh) 2011-02-02 2012-01-12 用于模拟在一个燃烧冲程中燃料多次喷射的内燃机的转矩效率的方法及装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011003491.9 2011-02-02
DE102011003491A DE102011003491A1 (de) 2011-02-02 2011-02-02 Vefahren und Vorrichtung zur Modellierung eies Momentwirkungsgrades eines Verbrennungsmotors für eine Kraftstoffmehrfacheinspritzung in einem Verbrennungstakt

Publications (1)

Publication Number Publication Date
WO2012104122A1 true WO2012104122A1 (fr) 2012-08-09

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PCT/EP2012/050412 WO2012104122A1 (fr) 2011-02-02 2012-01-12 Procédé et dispositif de modélisation d'un rendement de couple d'un moteur à combustion pour une injection multiple de carburant dans un cycle de combustion

Country Status (3)

Country Link
CN (1) CN103339361B (fr)
DE (1) DE102011003491A1 (fr)
WO (1) WO2012104122A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013108878A1 (de) 2013-08-16 2015-02-19 Denso Corporation Drehmomentbestimmung an einem Verbrennungsmotor mit Mehrfachinjektion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016217306A1 (de) * 2016-09-12 2018-03-15 Robert Bosch Gmbh Verfahren zur Steuerung von Mehrfacheinspritzungen bei einem Einspritzsystem
DE102016217308A1 (de) * 2016-09-12 2018-03-15 Robert Bosch Gmbh Verfahren zur Steuerung von Mehrfacheinspritzungen bei einem Einspritzsystem
CN107060883A (zh) * 2017-03-10 2017-08-18 王明忠 水动力、油水三次动力(活塞式)组合动力发动机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850581C1 (de) * 1998-11-03 2000-02-10 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ermittlung des Drehmoments einer Brennkraftmaschine mit Benzindirekteinspritzung
WO2001051794A1 (fr) * 2000-01-12 2001-07-19 Volkswagen Aktiengesellschaft Procede et dispositif pour commander un moteur a combustion interne
WO2002052137A2 (fr) * 2000-12-27 2002-07-04 Siemens Aktiengesellschaft Procede de commande d'un moteur a combustion interne
DE102007061732A1 (de) * 2007-12-20 2009-06-25 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
EP2080885A2 (fr) * 2008-01-18 2009-07-22 Robert Bosch Gmbh Procédé et dispositif destinés à la surveillance d'une unité de commande du moteur

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101762391B (zh) * 2008-12-25 2012-07-11 本田技研工业株式会社 发动机负荷检测装置以及发动机负荷检测方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19850581C1 (de) * 1998-11-03 2000-02-10 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ermittlung des Drehmoments einer Brennkraftmaschine mit Benzindirekteinspritzung
WO2001051794A1 (fr) * 2000-01-12 2001-07-19 Volkswagen Aktiengesellschaft Procede et dispositif pour commander un moteur a combustion interne
WO2002052137A2 (fr) * 2000-12-27 2002-07-04 Siemens Aktiengesellschaft Procede de commande d'un moteur a combustion interne
DE102007061732A1 (de) * 2007-12-20 2009-06-25 Robert Bosch Gmbh Verfahren zum Betreiben einer Brennkraftmaschine
EP2080885A2 (fr) * 2008-01-18 2009-07-22 Robert Bosch Gmbh Procédé et dispositif destinés à la surveillance d'une unité de commande du moteur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013108878A1 (de) 2013-08-16 2015-02-19 Denso Corporation Drehmomentbestimmung an einem Verbrennungsmotor mit Mehrfachinjektion
DE102013108878B4 (de) 2013-08-16 2022-08-11 Denso Corporation Drehmomentbestimmung an einem Verbrennungsmotor mit Mehrfachinjektion

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Publication number Publication date
CN103339361A (zh) 2013-10-02
DE102011003491A1 (de) 2012-08-02
CN103339361B (zh) 2016-11-02

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