WO2014206541A1 - Procédé permettant la régulation d'une énergie d'allumage - Google Patents

Procédé permettant la régulation d'une énergie d'allumage Download PDF

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Publication number
WO2014206541A1
WO2014206541A1 PCT/EP2014/001662 EP2014001662W WO2014206541A1 WO 2014206541 A1 WO2014206541 A1 WO 2014206541A1 EP 2014001662 W EP2014001662 W EP 2014001662W WO 2014206541 A1 WO2014206541 A1 WO 2014206541A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
current
tzs
internal combustion
ignition system
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
Application number
PCT/EP2014/001662
Other languages
German (de)
English (en)
Inventor
Stephan BRENDLER
Markus Raindl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen 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 MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of WO2014206541A1 publication Critical patent/WO2014206541A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • 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
    • F02P5/1502—Digital data processing using one central computing unit
    • F02P5/151—Digital data processing using one central computing unit with means for compensating the variation of the characteristics of the engine or of a sensor, e.g. by ageing
    • 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
    • F02P17/12—Testing characteristics of the spark, ignition voltage or current
    • F02P2017/121—Testing characteristics of the spark, ignition voltage or current by measuring spark voltage
    • 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 present invention relates to a method for controlling the ignition energy according to the preamble of claim 1.
  • the present invention has the object to provide an executable in particular with a pre-chamber spark plug method, which allows an improved energy-optimized and thus wear-optimized control of ignition.
  • a method for regulating the ignition energy, wherein the method is provided for execution with an ignition system of an internal combustion engine with spark ignition.
  • the spark-ignition internal combustion engine is e.g. a gas engine.
  • the ignition system which can be used with the method has an ignition coil with a primary (current) circuit and a secondary (current) circuit and a spark plug arranged in the secondary circuit on a combustion chamber (cylinder) of the internal combustion engine, particularly preferably a prechamber spark plug.
  • the setting for setting a minimum ignition energy in the current working cycle is preferably provided.
  • the Hätpielaufaims invention can be provided over the operation of the internal combustion engine advantageously always optimized, especially minimal ignition energy, so that the wear of the spark plug significantly reduced and thus the service life is increased, woneben breakdown voltage and actual ignition energy can be determined in an advantageous simple manner, For example, be provided by commercially available ignition control devices at an output as tappable information already.
  • the expended ignition energy or the control target for the current cycle further depending on a molecular concentration or density (of the mixture) in the combustion chamber and the electrode gap of the spark plug and / or at least one engine operating variable load, calorific value , Burning rate and combustion air ratio, in particular each of the previous cycle to determine.
  • O.A. specified (engine operating) variables (density, electrode spacing, load, calorific value, burning rate and combustion air ratio), which are, for example, measured variables or can be correlated for the provision of the control input in a respective control loop, for example, with a map (which eg Test stand was generated).
  • the burning rate function of pressure, temperature, fuel concentration
  • the electrode spacing for the determination of the respective setting parameter (s) that represent significant quantities and are preferably taken into account.
  • the consideration of the actual electrode spacing makes it possible to regulate the minimum energy in the respective working cycle. It has been found that the higher the breakdown voltage, the lower the spark duration requirement, ie the time required for the glow phase (which is essentially determined by a default value for tzs.i or the spark duration).
  • the breakdown voltage can be calculated, for example, from the course of the primary current or the primary voltage (each in the primary circuit).
  • the primary current can be measured for this purpose, for example.
  • the mean secondary current level can preferably be predetermined.
  • An adjustment or default values for current or spark duration can or can be determined based on a map.
  • a start parameter set can be provided, which is predetermined by the motor parameter set, for example.
  • a parameter set which contains a start specification can be determined, for example, at the (engine) test bench.
  • the invention also proposes an ignition system for carrying out the method described above.
  • the ignition system preferably has an ignition energy regulator, which may furthermore preferably be provided in the form of the engine controller (ECU).
  • an ignition control device may be provided, which cooperates with the ignition energy regulator.
  • the ignition energy regulator may also have the functionality of the control unit according to the invention.
  • the controller may provide the ignition controller with information about the secondary voltage or breakdown voltage for the control, and in particular also the ignition energy used.
  • the ignition energy regulator in turn can transmit the control variable determined therefor for the current working cycle to the ignition control device for the provision of the ignition energy by the same.
  • the method proposed according to the invention can be carried out in particular with a multi-cylinder internal combustion engine such that the ignition energy is regulated individually for each cylinder.
  • a setpoint can be determined for each cylinder for a respective working cycle.
  • Such a setting specification comprises in particular a cylinder-individual specification for the spark duration, in particular also the current, for example - as described above - for the mean secondary current level.
  • FIG. 1 shows an example and schematically an ignition system of an internal combustion engine for carrying out the method according to a possible embodiment of the invention
  • FIG. 2 shows by way of example and schematically a diagram for illustrating the method sequence according to a possible embodiment of the invention.
  • the ignition system 1 which is provided for an internal combustion engine (not shown), has an ignition coil 3 with a primary (current) circuit 5 and a secondary där (current) circuit 7, wherein the ignition coil 3 acts as an energy storage and transformer.
  • the primary side 5 of the ignition coil 3 can be supplied via an ignition controller 9 with a current or primary current, which primary current for generating a high voltage on the secondary side 7 is suitably interrupted, for example via a switch of the primary side 5 (not shown).
  • the switch is, for example, an IGBT or generally a transistorized switch, which may be part of the control unit 9 in particular.
  • the induction-based generated high voltage on the secondary side 7 is intended to generate at a secondary circuit 7 to a combustion chamber or cylinder of the internal combustion engine (not shown) arranged spark plug 11, in particular in the form of a Vorschfflekerze, a spark, ie. between the electrodes 11a, 11b.
  • a spark ie. between the electrodes 11a, 11b.
  • an ignition energy regulator 13 cooperates, which is preferably formed by an engine controller (ECU) of the internal combustion engine is.
  • the ignition regulator 13 is e.g. connected to one or more sensors (not shown), which provide provided for the method engine operating information to the controller 13.
  • FIG. 2 illustrates by way of example the method according to the invention for regulating the ignition energy, which can be carried out with the above-described ignition system 1 of an internal combustion engine.
  • the control unit 9 accordingly sets current lzs, i + i and spark duration tzs, i + i at the spark plug 11 via ignition coil 3 according to lzs, i + i and tzs, i +
  • the new spark duration tzs, i + i can be determined in the proposed method, wherein the new or current spark duration tzs, i + i is set the lower, the higher the breakdown voltage Uz in the previous work game is. Furthermore, the height of the (feed) current Izs is correlated with the ignition time (ZZP) and the burn rate estimable from the calorific value, lambda, pressure and temperature in the combustion chamber. In this case, the (feed) current Iz can be reduced with increasing burning speed and later ZZP.
  • the adjustment limits for the parameters spark duration t z and supply current l z are given upwards by the performance of the ignition control unit 9 and down, for example, from the requirement for engine running rest.
  • the breakdown voltage Uz and the actual ignition energy Ezi, ie that of the respective working cycle, is preferably reported by the ignition controller 9 to the controller 13, s. Feedback path or interface 15 in Figs. 1 and 2.
  • the breakdown voltage Uz of the respective working cycle is estimated, in particular advantageously calculated inexpensively from a primary current profile of the working cycle.
  • the control unit 9 can be suitably designed for this purpose.
  • the breakdown voltage Uz may be measured, for example.
  • the starting values can be stored in the controller 13.
  • the ignition energy E z to be expended for the current working cycle (i + 1) is furthermore preferably dependent on a density in the combustion chamber and the electrode spacing of the spark plug 11 and / or at least one engine operating variable from load P, calorific value H u and combustion air ratio ⁇ je 2, according to which the setting input (s) E Z s, i + i or -zs, tzs) i + i is / are determined as a function of H u , ⁇ , P and Uz.
  • the electrode spacing EA at the spark plug 11 in particular also the calorific value Hu, the combustion air ratio ⁇ and the instantaneous power output P (all influencing variables of the combustion speed) are determined from a multiplicity of chemical and physical influencing factors which could be considered in the context of the ignition energy application ), are considered as essential. Their influence can be compensated in the context of the method according to the invention for optimized ignition energy supply or is corrected.
  • Ez ⁇ U (t) z l (t) dt (2)
  • an adjustment (Ezs, i + i in Fig. 2) for the energy Ez, in particular for a corresponding adjustment of the current lz and / or the Spark duration tz can be determined.
  • the disturbances P, ⁇ , Hu, EA are to be regarded as differentiated with regard to their effect as such.
  • E Z s is taken into account in the context of the method for the determination of a respective setting input, which may apply
  • EA electrode gap of the spark plug [m] wherein the density pz (ZZP) can be determined, for example, based on the engine operating point.
  • both the electrode spacing EA and the spark duration tzs to be set for the ignition energy E Z s or the mean secondary current Izs to be set can be estimated.
  • proposed control method is to adjust the spark duration t z, and the current I z (primary or secondary current) or of the expended ignition energy E z preferably also the burning rate as a function of pressure, temperature, heating value and lambda of the mixture in the combustion chamber taken into account as far as than at a certain
  • the secondary voltage or breakdown voltage Uzj is fed back via the interface 15 from the ignition control unit 9 to the ignition energy regulator 13. Together with further variables such as P ,, H Uii and ⁇ , (b) the transmitted breakdown voltage Uzj is used to recalculate E Z s, i + i in the controller 13. After (c) calculation of E Z s, i + i, this determined setting is reported back to the ignition controller 9 via the communication interface 15 (d).
  • the spark plug 1 is supplied with energy as required as a function of power, calorific value, emission of the engine and the state of wear of the spark plug 11.
  • the Kerzenverschl constituent is significantly reduced and thus achieved a significant operating cost reduction for the engine operator.
  • spark plug electrode distances can be operated with this method, without having to drive the disproportionately high ignition energies over the entire service life of a spark plug 11, since the wear state of the plug 11 can be estimated at any time via the secondary voltage.
  • a service or replacement recommendation can be issued to the engine operator via the engine controller 13 and a connected alarm communication interface, whereby the wear can also be optimized application-related - this applies individually for each cylinder, each operating load of the engine and any chemical stress from the main combustion chamber, all of which determine the wear of the spark plug 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé permettant la régulation de l'énergie d'allumage. Ce procédé est destiné à être mis en œuvre avec un système d'allumage (1) d'un moteur à combustion interne à allumage commandé. Ce système d'allumage (1) comporte une bobine d'allumage (3) pourvue d'un circuit primaire (5) et d'un circuit secondaire (7) ainsi qu'une bougie d'allumage (11) disposée dans le circuit secondaire (7) sur une chambre de combustion du moteur à combustion interne. Pour un cycle de travail actuel (i+1) du moteur à combustion interne, une prescription de réglage (EZS,i+1 = f(lZS,i+1, tZS,i+1)) est déterminée en fonction d'une tension de claquage (UZ, i) déterminée de chaque cycle de travail précédent (i) et fournie pour la régulation de l'énergie d'allumage (EZ) dans le cycle de travail actuel.
PCT/EP2014/001662 2013-06-26 2014-06-18 Procédé permettant la régulation d'une énergie d'allumage Ceased WO2014206541A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013010685.0 2013-06-26
DE102013010685.0A DE102013010685A1 (de) 2013-06-26 2013-06-26 Verfahren zur Regelung der Zündenergie

Publications (1)

Publication Number Publication Date
WO2014206541A1 true WO2014206541A1 (fr) 2014-12-31

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PCT/EP2014/001662 Ceased WO2014206541A1 (fr) 2013-06-26 2014-06-18 Procédé permettant la régulation d'une énergie d'allumage

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DE (1) DE102013010685A1 (fr)
WO (1) WO2014206541A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009248B4 (de) * 2015-07-17 2020-01-02 Mtu Friedrichshafen Gmbh Verfahren zur Ausführung mit dem Betrieb einer Brennkraftmaschine
EP3587792B1 (fr) * 2018-06-27 2024-07-24 Caterpillar Energy Solutions GmbH Contrôle dynamique d'énergie d'allumage d'une bougie d'allumage dans un moteur à combustion interne
JP7281385B2 (ja) 2019-10-30 2023-05-25 株式会社Soken 点火装置
DE102024119237B3 (de) * 2024-07-05 2025-10-30 Rolls-Royce Solutions GmbH Verfahren zum Betreiben einer Brennkraftmaschine, Computerprogramm, Steuervorrichtung und Brennkraftmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513620A (en) * 1995-01-26 1996-05-07 Chrysler Corporation Ignition energy and breakdown voltage circuit and method
DE19608526A1 (de) * 1996-03-06 1997-09-11 Bremicker Auto Elektrik Verfahren zur Regelung der Mindestzündenergie
US6408242B1 (en) * 1997-12-11 2002-06-18 Cummins, Inc. Apparatus and method for diagnosing and controlling an ignition system of an internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT500692B1 (de) * 2003-01-16 2008-01-15 Ge Jenbacher Gmbh & Co Ohg Verbrennunsmotor mit mindestens einem zylinder
DE102007029953A1 (de) * 2007-06-28 2009-01-02 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Regelung der Zündenergie
DE102010015998A1 (de) 2010-03-17 2011-09-22 Motortech Gmbh Zündverfahren und Zündanlage dafür

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513620A (en) * 1995-01-26 1996-05-07 Chrysler Corporation Ignition energy and breakdown voltage circuit and method
DE19608526A1 (de) * 1996-03-06 1997-09-11 Bremicker Auto Elektrik Verfahren zur Regelung der Mindestzündenergie
US6408242B1 (en) * 1997-12-11 2002-06-18 Cummins, Inc. Apparatus and method for diagnosing and controlling an ignition system of an internal combustion engine

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