EP1541839B1 - Méthode de commande d'un moteur à combustion interne - Google Patents

Méthode de commande d'un moteur à combustion interne Download PDF

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Publication number
EP1541839B1
EP1541839B1 EP20030104619 EP03104619A EP1541839B1 EP 1541839 B1 EP1541839 B1 EP 1541839B1 EP 20030104619 EP20030104619 EP 20030104619 EP 03104619 A EP03104619 A EP 03104619A EP 1541839 B1 EP1541839 B1 EP 1541839B1
Authority
EP
European Patent Office
Prior art keywords
ignition
mode
spark
cycle
stroke cylinder
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.)
Expired - Fee Related
Application number
EP20030104619
Other languages
German (de)
English (en)
Other versions
EP1541839A1 (fr
Inventor
Martin Wirth
Patrick Joseph Phlips
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to EP20030104619 priority Critical patent/EP1541839B1/fr
Priority to DE50312910T priority patent/DE50312910D1/de
Publication of EP1541839A1 publication Critical patent/EP1541839A1/fr
Application granted granted Critical
Publication of EP1541839B1 publication Critical patent/EP1541839B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F02D41/30—Controlling fuel injection
    • F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
    • F02D41/3076—Controlling fuel injection according to or using specific or several modes of combustion with special conditions for selecting a mode of combustion, e.g. for starting, for diagnosing
    • 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
    • F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
    • 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
    • F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
    • F02D41/3017—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used
    • F02D41/3035—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the premixed charge compression-ignition mode
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
    • 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
    • F02D41/0002—Controlling intake air
    • F02D2041/001—Controlling intake air for engines with variable valve actuation
    • 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
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/006—Controlling exhaust gas recirculation [EGR] using internal EGR

Definitions

  • the invention relates to a method for operating an internal combustion engine having at least one four-stroke cylinder with controlled auto-ignition and spark ignition, wherein the four-stroke cylinder is operable at least in a controlled auto-ignition mode, having the features of the preamble of claim 1.
  • the internal combustion engine is, for example, a gasoline engine with one or more four-stroke cylinders.
  • Gasoline engines are mainly operated with a stoichiometric mixture, which allow aftertreatment of exhaust gases.
  • the fuel consumption loss at part load associated with throttling and stoichiometric operation may be reduced by lean operation, either by a homogeneous or stratified mixture by direct injection.
  • nitrogen emissions (NOx) can not be treated by conventional three-way catalysts (TWC).
  • TWC three-way catalysts
  • LNT lean nitrogen separators
  • the disadvantage of these LNT-based systems is that they are much more expensive than conventional TWCs.
  • the controlled auto-ignition in four-stroke gasoline engines is a new development, which is constantly being developed with a rapidly changing state of the art.
  • the WO 01/46571 and the WO 01/46573 each relate to a method for operating a four-stroke internal combustion engine in which the combustion is achieved with a self-ignition.
  • the internal combustion engine has a spark plug for spark ignition in order to supplement the auto-ignition process, in particular during the first ignition of the internal combustion engine.
  • the autoignition is used only in partial load ranges / low speed ranges, while the spark ignition is used at full load ranges / high speed ranges.
  • deterioration of the combustion may be registered so that the combustion is very quickly switched from the auto-ignition mode to the spark ignition. This is intended to prevent deterioration of the exhaust gas cleaning performance even during the auto-ignition mode.
  • valvetrain provides early exhaust valve closing (EEVC) and late intake valve opening (LIVO) to separate residual gas in a combustion chamber with minimal heat loss.
  • EEVC early exhaust valve closing
  • LIVO late intake valve opening
  • EP 1 201 903 A1 a method of controlling the combustion process in a four-stroke engine having means for spark ignition, intake and exhaust valves in at least one cylinder.
  • the spark igniters are activated or deactivated, with the exhaust valve being transitioned from an early close before the piston reaches its top dead center to a late close (near top dead center).
  • the exhaust valve closes much earlier than in the previous cycle, so that the fuel-air mixture is heated due to the residual gases.
  • the fresh fuel / air mixture is obliquely hatched, the residual gas is characterized as a bar. If the above limits are exceeded, it will be a misfire. This is in FIG. 1 denoted by n.
  • the four-stroke cylinder is still in CAI mode.
  • n + 1 to n + 4 is clearly shown that the proportion of residual gas relative to the fresh fuel / air mixture proportion is always lower, with no residual gas content is present in the cycles n + 3 and n + 4. This causes the four-stroke cylinder to fail.
  • the cycles n-1 to n-4 respectively represent a cycle performed before the misfire, where n + 1 to n + 4 each represent a cycle following the misfire.
  • the invention has for its object to provide an improved method for operating an internal combustion engine, in particular a gasoline engine available, which can continue to operate after a misfire occurring in CAI operation.
  • an internal combustion engine with a four-stroke cylinder which is re-ignited after a occurring in CAI operation misfire by igniting a following on the misfire cycle in the spark mode and can continue to operate.
  • FIG. 2 For example, the inventive method of operating an internal combustion engine having at least one four-stroke controlled auto-ignition (CAI) cylinder and spark ignition is illustrated, wherein the four-stroke cylinder is operable at least in a controlled auto-ignition mode.
  • FIG. 2 represents cycles n-4 to n-1, which show a normal CAI mode with normal ignition and normal torque.
  • the normal ignition is shown in each case with a dickliniertem square 1, in which a ratio of fresh fuel / air mixture 2 and residual gas 3 is located.
  • the fresh fuel / air mixture 2 is obliquely hatched, wherein the residual gas 3 is marked as a bar.
  • the CAI mode requires compliance with certain limits, such as a relatively high level of residual gas and a certain temperature of the mixture. If the specified limits are exceeded, there is a misfire.
  • the misfire is in FIG. 2 denoted by n (arrow 4).
  • the time is shown by the arrow 5.
  • n + 1 In a cycle n + 1 is clearly shown that the residual gas content 3 based on the fresh fuel / air mixture proportion 2 is lower.
  • the four-stroke cylinder In the cycle n + 1, the four-stroke cylinder is re-ignited by spark ignition.
  • the four-stroke engine In cycle n + 2, the four-stroke engine returns to CAI mode. The four-stroke cylinder continues to operate in this mode, as clearly indicated by cycles n + 3 and n + 4.
  • Cycles n-1 through n-4 each represent a pre-misfire cycle, where n + 1 through n + 4 each represent a misfire cycle.
  • the four-stroke cylinder is operated at moderate load and engine speeds with a significant portion of residual gas 3 being separated or recycled from the previous cycle, thereby initiating the CAI.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Claims (3)

  1. Procédé pour faire fonctionner un moteur à combustion interne comprenant au moins un cylindre à quatre temps avec auto-allumage contrôlé et allumage par étincelle, dans lequel le cylindre à quatre temps peut fonctionner au moins dans un mode d'auto-allumage contrôlé, le cylindre à quatre temps, après un raté d'allumage se produisant dans le mode d'auto-allumage contrôlé, étant à nouveau allumé dans le cycle suivant le raté d'allumage, dans un mode d'allumage par étincelle dans lequel plus de carburant est injecté dans le cylindre à quatre temps,
    caractérisé en ce que
    l'allumage pendant le mode d'auto-allumage contrôlé reste branché, et le cylindre à quatre temps, après le réallumage, c'est-à-dire après l'allumage en mode d'allumage par étincelle, revenant dans le mode d'auto-allumage contrôlé et continuant d'être commandé ensuite dans celui-ci dans le cycle suivant directement le cycle en mode d'allumage par étincelle.
  2. Procédé selon la revendication 1,
    caractérisé par
    un ajustement de pré-allumage sélectionné de telle sorte, que l'allumage soit optimisé de telle sorte que dans le cas de l'allumage par étincelle, on obtienne le même couple du moteur qu'en mode d'auto-allumage contrôlé.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    dans le cycle de réallumage, dans le cas de la réalisation du moteur avec une injection directe, une injection stratifiée du carburant a lieu juste avant l'allumage.
EP20030104619 2003-12-10 2003-12-10 Méthode de commande d'un moteur à combustion interne Expired - Fee Related EP1541839B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20030104619 EP1541839B1 (fr) 2003-12-10 2003-12-10 Méthode de commande d'un moteur à combustion interne
DE50312910T DE50312910D1 (de) 2003-12-10 2003-12-10 Verfahren zum Betreiben eines Verbrennungsmotors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030104619 EP1541839B1 (fr) 2003-12-10 2003-12-10 Méthode de commande d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP1541839A1 EP1541839A1 (fr) 2005-06-15
EP1541839B1 true EP1541839B1 (fr) 2010-07-21

Family

ID=34486382

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030104619 Expired - Fee Related EP1541839B1 (fr) 2003-12-10 2003-12-10 Méthode de commande d'un moteur à combustion interne

Country Status (2)

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EP (1) EP1541839B1 (fr)
DE (1) DE50312910D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007053775A1 (de) * 2007-11-12 2009-05-14 Ford Global Technologies, LLC, Dearborn Verfahren zum Betreiben einer Brennkraftmaschine, welche einen Betrieb in zwei unterschiedlichen Betriebsmodi zuläßt, und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760487B1 (fr) 1997-03-07 1999-04-30 Inst Francais Du Petrole Procede de controle de l'auto-allumage dans un moteur 4 temps
JP3835142B2 (ja) * 1999-09-07 2006-10-18 日産自動車株式会社 自己着火・火花点火式内燃機関の制御装置
WO2001046573A1 (fr) 1999-12-22 2001-06-28 Lotus Cars Limited Moteur a quatre temps a injection directe a auto-allumage
JP3880296B2 (ja) * 2000-08-02 2007-02-14 株式会社日立製作所 エンジンの制御装置
EP1201903B1 (fr) * 2000-10-25 2011-04-13 Ford Global Technologies, Inc. Methode pour contrôler le processus de combustion d'un moteur à combustion interne avec moyens de commande des soupapes
AT5646U1 (de) * 2001-08-27 2002-09-25 Avl List Gmbh Verfahren zum betrieb einer brennkraftmaschine
JP3927395B2 (ja) * 2001-09-28 2007-06-06 株式会社日立製作所 圧縮着火エンジンの制御装置
JP2003343312A (ja) * 2002-05-22 2003-12-03 Hitachi Ltd ターボ過給機を備えた筒内噴射型内燃機関の制御方法及びターボ過給機を備えた筒内噴射型内燃機関
DE10233611A1 (de) * 2002-07-24 2004-02-19 Siemens Ag Verfahren und Vorrichtung zum Überwachen und Steuern des Verbrennungsvorganges einer HCCI-Brennkraftmaschine

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Publication number Publication date
DE50312910D1 (de) 2010-09-02
EP1541839A1 (fr) 2005-06-15

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