EP0272290B2 - Verfahren zur kraftstoffzuteilung - Google Patents

Verfahren zur kraftstoffzuteilung Download PDF

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Publication number
EP0272290B2
EP0272290B2 EP87903861A EP87903861A EP0272290B2 EP 0272290 B2 EP0272290 B2 EP 0272290B2 EP 87903861 A EP87903861 A EP 87903861A EP 87903861 A EP87903861 A EP 87903861A EP 0272290 B2 EP0272290 B2 EP 0272290B2
Authority
EP
European Patent Office
Prior art keywords
fuel
acceleration
injected
state
injection
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
EP87903861A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0272290A1 (de
EP0272290B1 (de
Inventor
Helmut Gross
Wolfgang HÖPTNER
Günther KAISER
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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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0272290A1 publication Critical patent/EP0272290A1/de
Application granted granted Critical
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Publication of EP0272290B2 publication Critical patent/EP0272290B2/de
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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.
  • US Pat. No. 4,463,732 discloses an injection control system in which an extension of the current injection is provided after detection of an acceleration request, otherwise an intermediate spatter is metered.
  • DE 30 12 424 C2 relates to a "fuel injection control device for an internal combustion engine", in which, following an acceleration detection, the subsequent fuel injection occurs at the next reference signal. (Column 2, line 60ff).
  • US-A-4 541 388 shows a fuel injection control unit with the feature of an acceleration enrichment, in which the injection start angle can be advanced, among other things, depending on the speed according to a specified formula (column 4, lines 62 to column 5, line 30).
  • 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 immediately opened.
  • particular importance is attached to a rapid allocation of the increased fuel quantity. This takes place primarily the termination of a fuel injection predetermined by the advance angle.
  • the sequential injections of the set amount of fuel take place in a predetermined sequence at a time dependent on the operating point of the internal combustion engine within the work cycle specified by the trigger signal.
  • the fuel injections, the beginning of which was still in the future before the acceleration state was recognized, are provided earlier than for a steady-state operating state or are started immediately in order to ensure that the injection process is ended 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 TK 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 definition of the acceleration state is based on the ak current operating state and the data of previous operating states, in particular the load, load changes, speed, etc. are 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 takes place for all the cylinders whose regular fuel allocation has started and whose intake process has not yet ended, ie 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 on-time fuel injection which is represented by the signal d, takes place again in the same cylinder, adapted to the new load.
  • the on-schedule sequential fuel injection takes place in accordance with the fuel quantity, 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.
  • 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.

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)
EP87903861A 1986-07-09 1987-06-23 Verfahren zur kraftstoffzuteilung Expired - Lifetime EP0272290B2 (de)

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 (de) 1988-06-29
EP0272290B1 EP0272290B1 (de) 1990-01-31
EP0272290B2 true EP0272290B2 (de) 1993-01-27

Family

ID=6304733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87903861A Expired - Lifetime EP0272290B2 (de) 1986-07-09 1987-06-23 Verfahren zur kraftstoffzuteilung

Country Status (6)

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

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
DE3991570T1 (de) * 1989-01-20 1990-11-22 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

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018823B2 (ja) 1979-04-02 1985-05-13 日産自動車株式会社 燃料噴射装置
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
JPS58150048A (ja) * 1982-03-02 1983-09-06 Toyota Motor Corp 内燃機関の電子制御燃料噴射方法
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
JPS59211731A (ja) 1983-05-16 1984-11-30 Toyota Motor Corp 内燃機関用電子制御燃料噴射装置の噴射時期制御装置
JPS606041A (ja) * 1983-06-15 1985-01-12 Honda Motor Co Ltd 多気筒内燃エンジン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

Also Published As

Publication number Publication date
EP0272290A1 (de) 1988-06-29
KR970007390B1 (en) 1997-05-08
DE3761579D1 (de) 1990-03-08
JPH01500209A (ja) 1989-01-26
DE3623041A1 (de) 1988-01-14
JP2711543B2 (ja) 1998-02-10
KR880701819A (ko) 1988-11-05
US4893602A (en) 1990-01-16
EP0272290B1 (de) 1990-01-31
WO1988000285A1 (en) 1988-01-14

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