EP0272290B1 - Procede de dosage de carburant - Google Patents

Procede de dosage de carburant Download PDF

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Publication number
EP0272290B1
EP0272290B1 EP19870903861 EP87903861A EP0272290B1 EP 0272290 B1 EP0272290 B1 EP 0272290B1 EP 19870903861 EP19870903861 EP 19870903861 EP 87903861 A EP87903861 A EP 87903861A EP 0272290 B1 EP0272290 B1 EP 0272290B1
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EP
European Patent Office
Prior art keywords
fuel
acceleration
injected
state
determined
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
EP19870903861
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German (de)
English (en)
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EP0272290B2 (fr
EP0272290A1 (fr
Inventor
Helmut Gross
Wolfgang HÖPTNER
Günther KAISER
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Robert Bosch GmbH
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Robert Bosch GmbH
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0272290A1 publication Critical patent/EP0272290A1/fr
Publication of EP0272290B1 publication Critical patent/EP0272290B1/fr
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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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • 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
    • F02D41/10—Introducing corrections for particular operating conditions for acceleration
    • F02D41/105—Introducing corrections for particular operating conditions for acceleration using asynchronous injection
    • 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
    • F02D41/32—Controlling fuel injection of the low pressure type
    • F02D41/34—Controlling fuel injection of the low pressure type with means for controlling injection timing or duration

Definitions

  • the invention relates to a method for fuel allocation during acceleration processes in a plurality of cylinders of an internal combustion engine according to the preamble of the main claim.
  • the US-PS 4463732 discloses an injection control system, in which an extension of the currently running injection is provided after detection of an acceleration request, otherwise an intermediate spatter is metered.
  • the method according to the invention for allocating fuel during acceleration processes with the characterizing features of the main claim has the advantage over the known method that an immediate and rapid allocation of the amount of fuel corresponding to the state of acceleration takes place and thus also enables an improvement in fuel processing.
  • the difference quantity to the fuel quantity determined in the previous work cycle is determined. This excess is allocated to the cylinders whose regular fuel injection has started and whose intake stroke has not yet been completed. This takes place on the one hand in the form of additional fuel injections for cylinders whose fuel allocation has been completed or by extending current fuel injections by the calculated additional quantity.
  • the injection valves for all fuel injections are opened immediately.
  • special emphasis is placed on quickly allocating the increased amount of fuel. This takes place primarily the termination of a fuel injection predetermined by the advance angle.
  • the sequential injections of the set quantity of fuel take place in a predetermined sequence at a point in time dependent on the operating point of the internal combustion engine within the work cycle specified by the trigger signal.
  • the fuel injections are provided earlier than for a steady-state operating state or are started immediately in order to ensure the end of the injection process before the inlet valve closes.
  • the method according to the invention is shown in the drawing and is explained in more detail in the description below.
  • the drawing shows a time diagram of the fuel allocation after detection of an acceleration state.
  • the trigger signals TS being shown in the top line.
  • This trigger signal TS is shifted early by an application-specific angle with respect to the top dead centers of the individual cylinders.
  • the time period TC corresponds to a crankshaft rotation of 180 °.
  • the opening times of the intake valves V1 to V4 are shown for each of the cylinders 1 to 4.
  • the operating state of the internal combustion engine is recorded synchronously with the trigger signal TS.
  • the acceleration state is defined on the basis of the current operating state and the data from previous operating states, in particular the load, load changes, speed, etc. being recorded.
  • the fuel allocation is increased by an additional amount appropriate to the respective acceleration state during the acceleration state of the internal combustion engine.
  • the allocation is carried out for all the cylinders whose regular fuel allocation has started and whose intake process has not yet ended, i. that is, the inlet valve is not yet closed. It is assumed below that the acceleration state is recognized at time t.
  • the inlet valve V2 is just opened by the cylinder 2.
  • an additional fuel injection called an intermediate spray
  • the punctual fuel injection which is adapted to the new load, is then carried out in the same cylinder, which is ensured by the Si gnal d is shown.
  • the on-schedule sequential fuel injection takes place in accordance with the amount of fuel, the battery voltage, the advance angle and the speed. The advance angle determines the position of the end of the sequential injection with respect to the opening of the associated intake valve. After each trigger signal, the fuel injection to be triggered is initiated within the subsequent work cycle.
  • the next fuel injection which is indicated by the signal c, is started immediately in the cylinder 4.
  • the injection would normally only have started at a later point in time, ie without the acceleration state having been recognized and without the method according to the invention becoming effective. Due to the illustrated immediate start of fuel injection, the amount of fuel corresponding to the acceleration state is allocated quickly according to the invention.

Abstract

Procédé de dosage de carburant, pendant les accélérations, dans une pluralité de cylindres d'un moteur à combustion interne à injection séquentielle. La quantité de carburant à injecter est calculée en fonction du régime, et après détermination du niveau d'accélération, des injections supplémentaires de carburant sont effectuées. Un perfectionnement de ce procédé doit permettre un dosage plus rapide de la quantité accrue de carburant dans le moteur pendant le processus d'accélération. A cet effet, la quantité de carburant calculée est injectée dans au moins un, et de préférence dans chaque cylindre dont la quantité injectée n'a pas encore été aspirée et dont la soupape d'admission n'a pas encore été fermée ou dont le cycle d'admission n'est pas encore terminé. Cela intervient notamment au moment de la production d'un signal de déclenchement (TS) correspondant à la quantité supplémentaire de carburant déterminée en vue de l'accélération.

Claims (3)

1. Procédé de dosage de carburant pour des phases d'accélération dans plusieurs cylindres d'un moteur à combustion interne, à injection séquentielle, procédé selon lequel la quantité de carburant à injecter se détermine en fonction de l'état de fonctionnement et selon lequel on détermine l'état d'accélération, et après avoir déterminé l'état d'accélération on injecte une quantité complémentaire de carburant dans un cylindre dont la soupape d'admission n'est pas encore fermée et en accord avec l'accélération souhaitée, procédé caractérisé en ce qu'à l'instant où l'on exécute les injections complémentaires de carburant, on prolonge les injections de carburant en cours, d'une quantité complémentaire (b), calculée, et pour les injections de carburant qui n'ont pas encore commencé avant la détection de l'état d'accélération, on commence de manière anticipée par rapport au fonctionnement stationnaire.
2. Procédé selon la revendication 1, caractérisé en ce que l'injection qui suit la détection de l'accélération commence de préférence immédiatement.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les injections de carburant à un instant dépendant de l'état de fonctionnement du moteur à combustion interne, se font en fonction d'une cadence de travail déterminée par le signal de déclenchement (TS).
EP87903861A 1986-07-09 1987-06-23 Procede de dosage de carburant Expired - Lifetime EP0272290B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863623041 DE3623041A1 (de) 1986-07-09 1986-07-09 Verfahren zur kraftstoffzuteilung
DE3623041 1986-07-09

Publications (3)

Publication Number Publication Date
EP0272290A1 EP0272290A1 (fr) 1988-06-29
EP0272290B1 true EP0272290B1 (fr) 1990-01-31
EP0272290B2 EP0272290B2 (fr) 1993-01-27

Family

ID=6304733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87903861A Expired - Lifetime EP0272290B2 (fr) 1986-07-09 1987-06-23 Procede de dosage de carburant

Country Status (6)

Country Link
US (1) US4893602A (fr)
EP (1) EP0272290B2 (fr)
JP (1) JP2711543B2 (fr)
KR (1) KR970007390B1 (fr)
DE (2) DE3623041A1 (fr)
WO (1) WO1988000285A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803952A1 (de) * 1988-02-10 1989-08-24 Pierburg Gmbh Verfahren zum betreiben einer elektronisch geregelten brennstoffeinspritzeinrichtung fuer brennkraftmaschinen
DE3991570C2 (de) * 1989-01-20 1997-01-30 Mitsubishi Motors Corp Verfahren zur Steuerung der Kraftstoffzufuhr bei Beschleunigung einer Brennkraftmaschine mit elektronischer Einspritzung
US5187015A (en) * 1989-02-17 1993-02-16 Minnesota Mining And Manufacturing Company Ice release composition, article and method
JP2735870B2 (ja) * 1989-04-10 1998-04-02 マツダ株式会社 エンジンの燃料制御装置
DE3939548A1 (de) * 1989-11-30 1991-06-06 Bosch Gmbh Robert Elektronisches steuersystem fuer die kraftstoffzumessung bei einer brennkraftmaschine
DE4040637C2 (de) * 1990-12-19 2001-04-05 Bosch Gmbh Robert Elektronisches Steuersystem für die Kraftstoffzumessung bei einer Brennkraftmaschine
US5137000A (en) * 1991-03-29 1992-08-11 Cummins Electronics Company Device and method for decreasing delays in fuel injected internal combustion engines
JP3325392B2 (ja) * 1994-07-06 2002-09-17 本田技研工業株式会社 内燃エンジンの燃料噴射制御装置
JP2001342885A (ja) 2000-05-31 2001-12-14 Denso Corp 内燃機関の燃料噴射制御装置
DE10111260A1 (de) * 2001-03-09 2002-09-12 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ermittlung von Einspritzventilzeitgaben und Füllungsvorgaben bei einer Brennkraftmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463732A (en) 1982-03-02 1984-08-07 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic controlled non-synchronous fuel injecting method and device for internal combustion engines
US4541388A (en) 1983-05-16 1985-09-17 Toyota Jidosha Kabushiki Kaisha Fuel injection timing control unit for an electronic controlled fuel injection apparatus mounted on an internal combustion engine
DE3418387C2 (fr) 1983-06-15 1989-04-27 Honda Giken Kogyo K.K., Tokio/Tokyo, Jp
DE3012424C2 (de) 1979-04-02 1992-02-06 Nissan Motor Co., Ltd., Yokohama, Kanagawa Kraftstoffeinspritzsteuereinrichtung für eine Brennkraftmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825534A (ja) * 1981-08-10 1983-02-15 Toyota Motor Corp 電子制御エンジンの燃料噴射方法
JPS59162334A (ja) * 1983-03-04 1984-09-13 Toyota Motor Corp 多気筒内燃機関の燃料噴射制御方法
JPS59203840A (ja) * 1983-05-04 1984-11-19 Toyota Motor Corp 内燃機関の燃料噴射制御方法
JPS6098144A (ja) * 1983-11-02 1985-06-01 Hitachi Ltd 多気筒内燃機関用電子式燃料噴射装置
JPS60122238A (ja) * 1983-12-02 1985-06-29 Toyota Motor Corp 内燃機関の燃料噴射方法
JPS60122244A (ja) * 1983-12-07 1985-06-29 Mazda Motor Corp エンジンの燃料噴射装置
JPS60132043A (ja) * 1983-12-19 1985-07-13 Toyota Motor Corp 燃料噴射制御装置
JPS61182440A (ja) * 1985-02-08 1986-08-15 Honda Motor Co Ltd 内燃エンジンの燃料噴射時期制御方法
US4723524A (en) * 1985-06-05 1988-02-09 Hitachi, Ltd. Fuel injection controlling method for an internal combustion engine
JPH0650078B2 (ja) * 1985-10-30 1994-06-29 マツダ株式会社 電子制御燃料噴射装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012424C2 (de) 1979-04-02 1992-02-06 Nissan Motor Co., Ltd., Yokohama, Kanagawa Kraftstoffeinspritzsteuereinrichtung für eine Brennkraftmaschine
US4463732A (en) 1982-03-02 1984-08-07 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic controlled non-synchronous fuel injecting method and device for internal combustion engines
US4541388A (en) 1983-05-16 1985-09-17 Toyota Jidosha Kabushiki Kaisha Fuel injection timing control unit for an electronic controlled fuel injection apparatus mounted on an internal combustion engine
DE3418387C2 (fr) 1983-06-15 1989-04-27 Honda Giken Kogyo K.K., Tokio/Tokyo, Jp

Also Published As

Publication number Publication date
JPH01500209A (ja) 1989-01-26
EP0272290B2 (fr) 1993-01-27
JP2711543B2 (ja) 1998-02-10
KR880701819A (ko) 1988-11-05
DE3761579D1 (de) 1990-03-08
EP0272290A1 (fr) 1988-06-29
KR970007390B1 (en) 1997-05-08
WO1988000285A1 (fr) 1988-01-14
US4893602A (en) 1990-01-16
DE3623041A1 (de) 1988-01-14

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