EP1045970B1 - Procede pour faire fonctionner un moteur a combustion interne - Google Patents

Procede pour faire fonctionner un moteur a combustion interne Download PDF

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Publication number
EP1045970B1
EP1045970B1 EP99960843A EP99960843A EP1045970B1 EP 1045970 B1 EP1045970 B1 EP 1045970B1 EP 99960843 A EP99960843 A EP 99960843A EP 99960843 A EP99960843 A EP 99960843A EP 1045970 B1 EP1045970 B1 EP 1045970B1
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EP
European Patent Office
Prior art keywords
operating mode
internal combustion
combustion engine
operating
control unit
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 - Lifetime
Application number
EP99960843A
Other languages
German (de)
English (en)
Other versions
EP1045970A1 (fr
Inventor
Dieter Volz
Ernst Wild
Werner Mezger
Juergen Pantring
Andreas Roth
Franco Baiocchi
Roland Herynek
Mirjam Steger
Gudrun Menrad
Lutz Reuschenbach
Michael Oder
Werner Hess
Georg Mallebrein
Christian Koehler
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.)
Robert Bosch GmbH
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
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Publication of EP1045970A1 publication Critical patent/EP1045970A1/fr
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Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/263—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the program execution being modifiable by physical parameters
    • 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
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • 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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • F02D41/3023—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode
    • F02D41/3029—Controlling fuel injection according to or using specific or several modes of combustion characterised by the mode(s) being used a mode being the stratified charge spark-ignited mode further comprising a homogeneous charge spark-ignited mode

Definitions

  • the invention relates to a method for operating a Internal combustion engine in particular of a motor vehicle according to the
  • the preamble of claim 1 also relates to the invention an internal combustion engine, in particular for a motor vehicle according to the preamble of claim 9.
  • Such a method and such an internal combustion engine are known for example from DE 196 50 518 C1.
  • direct injection is fuel in a homogeneous operation during the intake phase or in one Shift operation during the compression phase in the combustion chamber injected into the internal combustion engine.
  • the homogeneous operation is preferably for full load operation of the internal combustion engine provided for during idle and shift operation Partial load operation is suitable.
  • Partial load operation is suitable depending of the desired target mode.
  • This target operating mode results from the respective operating state of the internal combustion engine. So can for example for a cold start of the internal combustion engine Homogeneous operation may make sense. In contrast, it is possible that in the event of a defect, shift operation is preferable is. From these operating states of the internal combustion engine must permanently the correct target operating mode for the respective point in time be determined.
  • JP 1113548A and JP 63230937A Further prior art is from JP 1113548A and JP 63230937A.
  • the object of the invention is to provide a method for operating to create an internal combustion engine with which a flexible, but nevertheless effective determination of the target operating mode is possible.
  • the various possible operating states of the Internal combustion engine are certain functions in the Assigned control unit. These functions can Trigger operating mode requests. The same can Functions combined and with a common one Operating mode request can be provided. A Mode requirement may be specific to a desired one Limit operating mode, but can also operate in several modes include. The operating mode requirements of all functions the internal combustion engine are processed by the control unit. The control unit determines from these operating mode requirements the target operating mode.
  • Each of the operating mode requirements and each of the operating modes is assigned a priority and it will identify the Target operating mode depending on the priorities of the Operating mode requirements and the operating modes carried out. In this way it is possible to do the different Weight the operating mode requirements of the internal combustion engine.
  • the priorities for the mode requirements and for the Operating modes are in one in the control unit stored priority list contain and can there can be supplemented and / or changed at any time.
  • two mode requirements linked together and it the result of the link will be used further if in the two operating mode requirements at least one Match exists.
  • the operating mode request with the higher priority is called the link result further used if in the two operating mode requirements there is no match. After that it will Link result with the operating mode request with the linked to the next lower priority. Preferably one AND operation performed.
  • the method according to the invention can also be in the form of a Control can be realized for a control unit an internal combustion engine, in particular a motor vehicle, is provided. There is a program on the control element stored on a computing device, in particular on a microprocessor, executable and for executing the method according to the invention is suitable.
  • a control can in particular be an electrical storage medium for Use, for example, a read-only memory.
  • an internal combustion engine 1 is one Motor vehicle shown, in which a piston 2 in one Cylinder 3 can be moved back and forth.
  • the cylinder 3 is with a combustion chamber 4 provided, among other things, by the piston 2, an inlet valve 5 and an outlet valve 6 is limited.
  • an inlet valve 5 is a suction pipe 7 and with the outlet valve 6, an exhaust pipe 8 is coupled.
  • the intake pipe 7 there is a rotatable throttle valve 11 housed, through which the intake pipe 7 air can be supplied.
  • the amount of air supplied depends on the angular position of the throttle valve 11.
  • a catalytic converter 12 is located in the exhaust pipe 8 housed by the cleaning of the by burning the Exhaust gas generated serves.
  • An exhaust gas recirculation pipe 13 leads back from the exhaust pipe 8 the intake pipe 7.
  • a Exhaust gas recirculation valve 14 housed with which the amount of in the intake pipe 7 recirculated exhaust gas can be adjusted. Form the exhaust gas recirculation pipe 13 and the exhaust gas recirculation valve 14 a so-called exhaust gas recirculation.
  • a tank ventilation line 16 leads from a fuel tank 15 to the intake pipe 7.
  • a Tank vent valve 17 housed with which the amount of the fuel pipe supplied to the intake pipe 7 from the Fuel tank 15 is adjustable.
  • the tank ventilation line 16 and the tank vent valve 17 form a so-called Tank ventilation.
  • the piston 2 is burned by the fuel in the Combustion chamber 4 in a reciprocating motion that on a Not shown crankshaft is transmitted and on this one Exerts torque.
  • a control unit 18 is acted upon by input signals 19 which Operating variables of the internal combustion engine measured by means of sensors 1 represent.
  • the control unit 18 is equipped with a Air mass sensor, a lambda sensor, a speed sensor and the like connected.
  • Control unit 18 is also included connected to an accelerator pedal sensor that generates a signal that the Position of an accelerator pedal operated by a driver and so that the requested torque indicates.
  • the control unit 18 generates output signals 20 with which via actuators or actuators the behavior of the internal combustion engine 1 can be influenced.
  • the control unit 18 with the injection valve 9 the spark plug 10 and the throttle valve 11 and the like connected and generates the necessary for their control Signals.
  • control unit 18 is provided for the To control and / or to control operating variables of the internal combustion engine 1 regulate.
  • the injection valve 9 in the Combustion chamber 4 injected fuel mass from the control unit 18 especially with regard to low fuel consumption and / or controlled low pollutant development and / or regulated.
  • the control unit 18 is equipped with a Microprocessor provided in a storage medium, a program in particular in a read-only memory has saved, which is suitable for the control mentioned and / or carry out regulation.
  • a so-called homogeneous operation "hom” of the internal combustion engine 1 the throttle valve 11 in Depending on the desired torque partially opened or closed.
  • the fuel is supplied from the injection valve 9 during a suction phase caused by the piston 2 in the combustion chamber 4 injected.
  • intake air is the injected Fuel swirls and thus in the combustion chamber 4 in essentially evenly distributed.
  • Air / fuel mixture during the compression phase compressed to be ignited by the spark plug 10. Due to the expansion of the ignited fuel, the piston becomes 2 driven.
  • the resulting torque depends on Homogeneous operation essentially from the position of the Throttle valve 11.
  • a so-called homogeneous Lean operation "hmm" of the internal combustion engine 1 the fuel as in the homogeneous operation during the intake phase in the Combustion chamber 4 injected.
  • the fuel / air mixture can also be used with lambda> 1 occur.
  • a so-called shift operation "sch" of the internal combustion engine 1 the throttle valve 11 becomes wide open.
  • the fuel is supplied from the injector 9 during a compression phase caused by the piston 2 in the combustion chamber 4 injected, locally in the immediate vicinity of the spark plug 10 and in time suitable distance before the ignition point. Then with help the spark plug 10 ignites the fuel so that the piston 2 in the work phase that now follows through the expansion of the ignited fuel is driven.
  • the emerging Torque largely depends on the in shift operation injected fuel mass. Essentially, that is Shift operation for idle operation and partial load operation the internal combustion engine 1 is provided.
  • a so-called homogeneous shift operation "hos" of the internal combustion engine 1 a Double injection.
  • Fuel is injected from the injection valve 9 during the suction phase and during the compression phase in the Combustion chamber 4 injected.
  • the homogeneous shift operation links thus the properties of shift operation and Homogeneous operation. With the help of homogeneous shift operation for example, a particularly smooth transition from that Shift operation in homogeneous operation and vice versa achieved become.
  • a so-called layer heating "skh" of the internal combustion engine 1 there is also a Double injection. Fuel is injected from the injection valve 9 during the compression phase and during the work phase in the combustion chamber 4 injected. In this way essentially no additional torque reached, but it is due to the fuel injected into the working phase causes rapid heating of the catalyst 12. This is for example during a cold start of the internal combustion engine 1 from Importance.
  • the control unit 18 controls the switches.
  • the Switching is triggered by the individual Functions of the internal combustion engine 1. For example, at a cold start, the fifth operating mode, namely stratified heating can be requested with which the catalyst 12 quickly is heated to an operating temperature.
  • FIGS A method is shown in FIGS the control unit 18 can be executed, and suitable for this is the requirements of the operating modes by different Coordinate functions of the internal combustion engine 1.
  • the Indian Block 21 shown in FIG. 2 represents a placeholder for the method of Figure 3.
  • the method of Figure 3 is in the Control unit 18, in particular with a modular design Programs represented.
  • a plurality of functions act on the Block 21. This goes from the majority of those in the right pane shown arrows aligned on the block 21.
  • the catalyst Storage catalytic converter which for the temporary storage of Sitckoxiden is provided. This function ensures that the storage catalytic converter in time again after loading is discharged. It is also about the function of the start or warm-up, in which the internal combustion engine 1, for example cannot be operated in the shift mode may. It is also an operating mode map, the is intended for normal driving. Furthermore you can there are still a variety of other functions that the Apply block 21.
  • a target byte 22 is shown in FIG Storage of the operating modes described Internal combustion engine 1 is used in the control unit 18.
  • the target byte 22 has eight bits, three of which are unoccupied.
  • the figure 1 described internal combustion engine 1 and that with reference to Figures 2 and 3 described methods also with less or with more than five different modes of operation can be performed. In in this case there are no more or fewer bits in the target byte 22 occupied.
  • the homogeneous operation "hom”, the homogeneous lean operation “hmm”, the Shift operation “sch”, homogeneous shift operation “hos” and that Layer heating "skh” are by one of each remaining five bits represented.
  • the target byte 22 shown in FIG. 2 is provided for the target operating mode, i.e. the desired operating mode of the Label internal combustion engine 1.
  • the target operating mode i.e. the desired operating mode of the Label internal combustion engine 1.
  • the Internal combustion engine 1 for example, in homogeneous operation desired operating mode are operated, is in the Target byte 22 set the bit "hom” to "1" while the others four relevant bits are all set to "0".
  • the target byte 22 is therefore always one of the relevant bits set to "1", while the other bits are set to "0". That on "1"
  • the bit set indicates the desired target operating mode the internal combustion engine 1.
  • the target byte 22, in particular the target operating mode set therein is from block 21 on the basis of FIG shown method determined.
  • This Operating mode requests are each with the target byte 22 corresponding request bytes from each of the Operating states transmitted to block 21.
  • the request bits correspond to the individual bits corresponding bits of the target byte 22.
  • At least one bit is set to "1" in the request byte. However, all five bits can also be set. In the first case this means that the associated function only this, with the set bit requests specific operating mode. Otherwise it is irrelevant for the associated function which one Operating mode is available. The associated function demands therefore "pro forma” all possible operating modes. Any Intermediate options are also permitted. So can, for example, of a function of homogeneous operation be requested, regardless of the Lambda value to be set. In this case, this is in the associated request byte Bit for "hom” and for "hmm” each set to "1", the others However bits to "0".
  • Target byte 22 and the request bytes are involved are binary data words that are stored in the control unit 18 are stored, and in which each operating mode by a specific bit is represented. It should be noted that Target byte 22 and the request bytes - as described - have different meanings and therefore exactly different from each other must be distinguished.
  • FIG. 4 shows a list of priorities for the Operating mode requirements of the various functions specified.
  • the operating mode requirement of the "Monitoring" function has the highest priority "1", the operating mode requirement of Function “component protection” the next lower priority “2”, etc.
  • the operating mode request of the function “Start / warm-up” with priority "7” can still have a number further functions with corresponding subordinate priorities consequences.
  • the operating mode requirement is the function "Operating mode map" as the penultimate function with priority "x" present. This is followed by one with the lowest priority fixed priority list for the described operating modes.
  • the operating mode requirement becomes the priority "1”, ie the operating mode requirement of the "Monitoring" function in a link 23 with the operating mode request priority "2", that is, with the operating mode request of Function "component protection” AND-linked.
  • the associated request bytes from the control unit 18 ANDed.
  • This linking result is not equal to "0", so that the Switch 25 is not switched and the link result is passed on unchanged.
  • the respective link result is sent to another Link point 26 passed on to the Operating mode request with priority "3", ie with the Operating mode request of the "emergency operation" function AND-linked becomes.
  • the linkage result will be in a corresponding manner compared to "0" by a block 27 to be dependent of which to switch a switch 28.
  • operating mode map is a map the basis in which that required by the internal combustion engine 1 Torque is plotted against the speed of the same. In each A request byte is stored in the point of this map, in which it is specified in which operating mode the internal combustion engine 1 should generate the required torque. Any of these Request bytes therefore only contain a single set bit.
  • the internal combustion engine 1 Depending on the required torque and speed the internal combustion engine 1 becomes the associated request byte as an operating mode request with priority "x" to a Link point 29 given to there with the last generated Linking result to be AND linked.
  • the Linking result is in the manner already described by a block 30 compared to "0" to be dependent of which switch 31.
  • Linking result generated can be one or more bits be set.
  • link result generated by link 29 in the example above, the link result 00001100, 3 is fed to a block 32, in which from the Linking result with that of the set operating modes with the highest priority.
  • FIG. 5 shows a priority list of the operating modes of the Internal combustion engine 1 shown.
  • the aforementioned selection the operating mode with the highest priority is based on this list of priorities. In the above example, it will be off operating mode "sch" as the result of the link Highest priority mode selected.
  • Target operating mode the target byte 22 of Figure 2.
  • this target byte 22 as already mentioned, only a single bit is set. in the The above example is the target byte 00001000 and indicates the shift operation "sch" as the target operating mode.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (10)

  1. Procédé pour faire fonctionner un moteur à combustion interne (1), en particulier d'un véhicule automobile, selon lequel le carburant est injecté dans une chambre de combustion (4) d'après au moins deux types de fonctionnement, et selon lequel on bascule d'un type de fonctionnement à un autre, en fonction d'un type de fonctionnement théorique et selon lequel le type de fonctionnement théorique est établi à partir d'un grand nombre de demandes de type de fonctionnement,
    caractérisé en ce qu'
    une priorité est associée à chacune des demandes de type de fonctionnement (figure 4), une priorité (figure 5) est associée à chacun des types de fonctionnement et l'établissement du type théorique de fonctionnement est réalisé en fonction des priorités des demandes de type de fonctionnement ainsi qu'en fonction des priorités des types de fonctionnement.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    l'on combine l'une à l'autre deux demandes de type de fonctionnement (23) et le résultat de la combinaison est utilisé par la suite lorsqu'il y a au moins une correspondance dans les deux demandes de type de fonctionnement.
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    la demande de type de fonctionnement dont la priorité est la plus élevée est utilisée par la suite en tant que résultat de combinaison lorsqu'il n'y a pas de correspondance entre les deux demandes de type de fonctionnement.
  4. Procédé selon l'une des revendications 2 ou 3,
    caractérisé en ce que
    le résultat de combinaison est combiné à la demande de type de fonctionnement dont la priorité est immédiatement inférieure (26, 29).
  5. Procédé selon les revendications 2 à 4,
    caractérisé en ce que
    l'on exécute une combinaison ET.
  6. Procédé selon l'une des revendications 2 à 5,
    caractérisé en ce qu'
    au cas où l'on a plus d'un type de fonctionnement dans le résultat de combinaison établi en dernier lieu, on sélectionne celui des types de fonctionnement présents qui a la priorité la plus élevée.
  7. Programme informatique pour un appareil de commande (18) d'un moteur à combustion interne (1), en particulier d'un véhicule automobile,
    caractérisé en ce qu'
    il est programmé pour être utilisé dans un procédé selon l'une des revendications 1 à 6.
  8. Appareil de commande (18) pour un moteur à combustion interne (1), en particulier d'un véhicule automobile,
    caractérisé en ce qu'
    il est conçu pour être utilisé dans un procédé selon l'une des revendications 1 à 6.
  9. Moteur à combustion interne (1), en particulier d'un véhicule automobile, comportant une chambre de combustion (4), dans laquelle le carburant peut être injecté d'après au moins deux types de fonctionnement, et un appareil de commande (18) à l'aide duquel on peut basculer d'un type de fonctionnement à un autre en fonction d'un type théorique de fonctionnement et à l'aide duquel on peut établir le type théorique de fonctionnement à partir d'un grand nombre de demandes de type de fonctionnement,
    caractérisé en ce qu'
    une liste de priorité (figure 4) des demandes de type de fonctionnement et une liste de priorité (figure 5) des types de fonctionnement est mémorisée dans l'appareil de commande (18) et on prévoit des moyens qui se chargent d'établir le type théorique de fonctionnement de l'appareil de commande (18) en fonction des priorités des demandes de type de fonctionnement ainsi qu'en fonction des priorités des types de fonctionnement.
  10. Moteur à combustion interne (1) selon la revendication 9,
    caractérisé en ce que
    les demandes de type de fonctionnement et le type théorique de fonctionnement sont mémorisés dans l'appareil de commande (18) sous forme de mots de données binaires, chaque type de fonctionnement étant représenté par un bit donné dans les mots de données binaires.
EP99960843A 1998-11-03 1999-11-02 Procede pour faire fonctionner un moteur a combustion interne Expired - Lifetime EP1045970B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19850586 1998-11-03
DE19850586A DE19850586A1 (de) 1998-11-03 1998-11-03 Verfahren zum Betreiben einer Brennkraftmaschine
PCT/DE1999/003476 WO2000026526A1 (fr) 1998-11-03 1999-11-02 Procede pour faire fonctionner un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1045970A1 EP1045970A1 (fr) 2000-10-25
EP1045970B1 true EP1045970B1 (fr) 2004-08-18

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EP99960843A Expired - Lifetime EP1045970B1 (fr) 1998-11-03 1999-11-02 Procede pour faire fonctionner un moteur a combustion interne

Country Status (5)

Country Link
US (1) US6394063B1 (fr)
EP (1) EP1045970B1 (fr)
JP (1) JP4550284B2 (fr)
DE (2) DE19850586A1 (fr)
WO (1) WO2000026526A1 (fr)

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DE59910280D1 (de) 2004-09-23
DE19850586A1 (de) 2000-05-04
JP2002529640A (ja) 2002-09-10
JP4550284B2 (ja) 2010-09-22
EP1045970A1 (fr) 2000-10-25
WO2000026526A1 (fr) 2000-05-11

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