EP1122418A3 - Method for adaptation of maximum injection pressure in high pressure accumulator - Google Patents

Method for adaptation of maximum injection pressure in high pressure accumulator Download PDF

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Publication number
EP1122418A3
EP1122418A3 EP01100564A EP01100564A EP1122418A3 EP 1122418 A3 EP1122418 A3 EP 1122418A3 EP 01100564 A EP01100564 A EP 01100564A EP 01100564 A EP01100564 A EP 01100564A EP 1122418 A3 EP1122418 A3 EP 1122418A3
Authority
EP
European Patent Office
Prior art keywords
pressure
injection
injection pressure
einspritzdrucks
des
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.)
Granted
Application number
EP01100564A
Other languages
German (de)
French (fr)
Other versions
EP1122418B1 (en
EP1122418A2 (en
Inventor
Thomas Frenz
Peter Klee
Hansjoerg Bochum
Winfried Langer
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1122418A2 publication Critical patent/EP1122418A2/en
Publication of EP1122418A3 publication Critical patent/EP1122418A3/en
Application granted granted Critical
Publication of EP1122418B1 publication Critical patent/EP1122418B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D41/1406—Introducing closed-loop corrections characterised by the control or regulation method with use of a optimisation method, e.g. iteration
    • 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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3827—Common rail control systems for diesel engines
    • 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
    • F02D2041/224—Diagnosis of the fuel system
    • 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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zur Adaption eines in einem Hochdruckspeicher eines Kraftstoffzumeßsystems einer direkt einspritzenden Brennkraftmaschine herrschenden maximalen Einspritzdrucks, wobei von dem Hochdruckspeicher mehrere Betriebsgrößen abhängig steuerbare Einspritzventile zum Zumessen von Kraftstoff aus dem Hochdruckspeicher in Brennräume der Brennkraftmaschine abzweigen. Um den maximalen Einspritzdruck in dem Hochdruckspeicher derart einzustellen, dass einerseits die Ressourcen des Kraftstoffzumeßsystems optimal ausgenutzt werden und andererseits aber noch alle Einspritzventile mit Sicherheit öffnen, werden die nachfolgenden Schritte vorgeschlagen:

  • Einstellen eines bestimmten Einspritzdrucks als Anfangsdruck;
  • Erhöhen des Einspritzdrucks ausgehend von dem Anfangsdruck bei gleichzeitigem Überprüfen, ob die Einspritzventile öffnen;
  • Beenden der Erhöhung des Einspritzdrucks, sobald mindestens eines der Einspritzventile nicht mehr öffnet;
  • Verringern des Einspritzdrucks um einen vorgegebenen Betrag; und
  • Heranziehen des verringerten Einspritzdrucks als maximalen Einspritzdruck des Hochdruckspeichers.
Figure 00000001
The invention relates to a method for adapting a maximum injection pressure prevailing in a high-pressure accumulator of a fuel metering system of a direct-injection internal combustion engine, wherein several operating variables, depending on the high-pressure accumulator, are used to control controllable injection valves for metering fuel from the high-pressure accumulator into combustion chambers of the internal combustion engine. In order to set the maximum injection pressure in the high-pressure accumulator in such a way that, on the one hand, the resources of the fuel metering system are optimally used and, on the other hand, all the injection valves are still opened with certainty, the following steps are proposed:
  • Setting a certain injection pressure as the initial pressure;
  • Increasing the injection pressure from the initial pressure while checking whether the injectors open;
  • Ceasing to increase the injection pressure as soon as at least one of the injection valves no longer opens;
  • Reducing the injection pressure by a predetermined amount; and
  • Using the reduced injection pressure as the maximum injection pressure of the high-pressure accumulator.
Figure 00000001
EP01100564A 2000-02-05 2001-01-10 Method for adaptation of maximum injection pressure in high pressure accumulator Expired - Lifetime EP1122418B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005208A DE10005208A1 (en) 2000-02-05 2000-02-05 Process for adapting the maximum injection pressure in a high pressure accumulator
DE10005208 2000-02-05

Publications (3)

Publication Number Publication Date
EP1122418A2 EP1122418A2 (en) 2001-08-08
EP1122418A3 true EP1122418A3 (en) 2003-01-22
EP1122418B1 EP1122418B1 (en) 2004-05-26

Family

ID=7630017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01100564A Expired - Lifetime EP1122418B1 (en) 2000-02-05 2001-01-10 Method for adaptation of maximum injection pressure in high pressure accumulator

Country Status (5)

Country Link
EP (1) EP1122418B1 (en)
JP (1) JP2001241351A (en)
KR (1) KR100730664B1 (en)
DE (2) DE10005208A1 (en)
ES (1) ES2220595T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0501459A2 (en) * 1991-02-27 1992-09-02 Nippondenso Co., Ltd. Common-rail fuel injection system and related method
DE19622757A1 (en) * 1995-11-09 1997-05-15 Bosch Gmbh Robert Fuel injection system for IC engine
DE19626689C1 (en) * 1996-07-03 1997-11-20 Bosch Gmbh Robert Common-rail fuel injection system monitoring method
EP0860600A2 (en) * 1997-02-21 1998-08-26 Toyota Jidosha Kabushiki Kaisha A fuel injection system for an internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421088A (en) * 1980-07-03 1983-12-20 Lucas Industries Limited Fuel system for compression ignition engine
US5492099A (en) * 1995-01-06 1996-02-20 Caterpillar Inc. Cylinder fault detection using rail pressure signal
JP3995118B2 (en) * 1995-11-09 2007-10-24 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Leak identification method and apparatus for fuel supply system in internal combustion engine with high pressure fuel injection device
DE19624001A1 (en) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Fuel injection device for internal combustion engines
DE29706625U1 (en) * 1997-04-12 1997-08-14 Schmidt, Ernst W., 83457 Bayerisch Gmain Electronic - magnetically operated injection nozzle
FR2775318B1 (en) * 1998-02-26 2000-04-28 Sagem MULTI-POINT INJECTION MODULE FOR INTERNAL COMBUSTION ENGINE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0501459A2 (en) * 1991-02-27 1992-09-02 Nippondenso Co., Ltd. Common-rail fuel injection system and related method
DE19622757A1 (en) * 1995-11-09 1997-05-15 Bosch Gmbh Robert Fuel injection system for IC engine
DE19626689C1 (en) * 1996-07-03 1997-11-20 Bosch Gmbh Robert Common-rail fuel injection system monitoring method
EP0860600A2 (en) * 1997-02-21 1998-08-26 Toyota Jidosha Kabushiki Kaisha A fuel injection system for an internal combustion engine

Also Published As

Publication number Publication date
ES2220595T3 (en) 2004-12-16
EP1122418B1 (en) 2004-05-26
EP1122418A2 (en) 2001-08-08
KR20010078311A (en) 2001-08-20
DE10005208A1 (en) 2001-08-16
KR100730664B1 (en) 2007-06-22
DE50102369D1 (en) 2004-07-01
JP2001241351A (en) 2001-09-07

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