EP1905994B1 - Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine - Google Patents

Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine Download PDF

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Publication number
EP1905994B1
EP1905994B1 EP06425629.0A EP06425629A EP1905994B1 EP 1905994 B1 EP1905994 B1 EP 1905994B1 EP 06425629 A EP06425629 A EP 06425629A EP 1905994 B1 EP1905994 B1 EP 1905994B1
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EP
European Patent Office
Prior art keywords
engine
fuel combustion
cylinder pressure
determining
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.)
Not-in-force
Application number
EP06425629.0A
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English (en)
French (fr)
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EP1905994A1 (de
Inventor
Roberto Morone
Stefano Prone
Andrea Ruggiero
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.)
Centro Ricerche Fiat SCpA
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Centro Ricerche Fiat SCpA
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Publication date
Application filed by Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Priority to EP06425629.0A priority Critical patent/EP1905994B1/de
Publication of EP1905994A1 publication Critical patent/EP1905994A1/de
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Publication of EP1905994B1 publication Critical patent/EP1905994B1/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
    • F02D41/30—Controlling fuel injection
    • F02D41/3005—Details not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/028—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the combustion timing or phasing

Definitions

  • the electronic control unit 11 samples each signal of pressure in the cylinder P ( t ) at a constant sampling frequency f c chosen appropriately as a function of the characteristics of the signal generated by the pressure sensor 15, for example, 20 kHz, thus generating a sequence of pressure samples P [ i ], in the example considered every 50 ⁇ s (block 20), and, simultaneously, measuring the times ⁇ t [ j ] taken by the drive shaft 9 to cover angular intervals of constant width that are linked to the resolution of the phonic-wheel signal (block 21).
  • the two sets of acquisitions are moreover synchronized, by the electronic control unit 11, with respect to the instant of start of acquisition, taking as starting position a pre-set value of engine angle (block 22).
  • the electronic control unit 11 determines the corresponding engine angle ⁇ [ i ], the instant of sampling of P[ i ] and the angular travel times ⁇ t [ j ] being known(block 23).
  • the electronic control unit 11 determines:

Claims (5)

  1. Elektronisches Steuersystem (11, 13, 14, 15), konfiguriert zum Regeln einer Brennstoffverbrennungszeitgebung in einem Verbrennungsmotor (1), insbesondere einem Dieselmotor, vermittels:
    - bestimmen einer Brennstoffverbrennungseigenschaft (ϑMFB50%), indikativ für eine Position eines Brennstoffverbrennungszyklus in einem Motorzylinder (4) mit Bezug auf einen Motorzyklus; und
    - regeln der Brennstoffverbrennungszeitgebung in dem Verbrennungsmotor (1), basierend auf der Brennstoffverbrennungscharakteristik (ϑMFB50%) und einem Zielwert (ϑMFB50%-TARG) für die Brennstoffverbrennungscharakteristik (ϑMFB50%);
    - dadurch gekennzeichnet, dass das Bestimmen einer Brennstoffverbrennungscharakteristik (ϑMFB50%) umfasst:
    - bestimmen von In-Zylinder Druckwerten (P[i]) bei sukzessiven und gleichmäßig beabstandeten Zeitpunkten, während zumindest einem Teil des Brennstoffverbrennungszyklus in dem Motorzylinder (4);
    - messen von Bewegungszeiten (Δt[j]) gebraucht von der Motorkurbelwelle zum Zurücklegen sukzessiver konstant breiten Winkelabständen (Δϑ);
    - bestimmen von Motorkurbelwellenwinkeln (ϑ[i]), entsprechend den In-Zylinder Druckwerten (P[i]), basierend auf den Bewegungszeiten (Δt[j]); und
    - bestimmen der Brennstoffverbrennungscharakteristik (ϑMFB50%), basierend auf den In-Zylinder Druckwerten (P[i]) und den Motorkurbelwellenwinkeln (ϑ[i]).
  2. Elektronisches Steuersystem nach Anspruch 1, bei welchem das Bestimmen der Brennstoffverbrennungscharakteristik (ϑMFB50%), basierend auf den In-Zylinder Druckwerten (P[i]) und den Motorkurbelwellenwinkeln (ϑ[i]) umfasst:
    - bestimmen von winkelmäßigen Versetzungen (Δ[i]) der Motorkurbelwelle zwischen aufeinanderfolgenden Zeitpunkten, wenn die In-Zylinder Druckwerte (P[i]) bestimmt sind oder werden, basierend auf den Bewegungszeiten (Δt[j]);
    - bestimmen von Motorkurbelwellenwinkeln ϑ[i], entsprechend den In-Zylinder Druckwerten (P[i]), basierend auf den winkelmäßigen Versetzungen (Δϑ[i]); und
    - bestimmen der Brennstoffverbrennungscharakteristik (ϑMFB50%), basierend auf den In-Zylinder Druckwerten (P[i]) und den Motorkurbelwellenwinkeln (ϑ[i]).
  3. Elektronisches Steuersystem nach Anspruch 1 oder 2, bei welchem die In-Zylinder Druckwerte (P[i]) bestimmt werden während Kompressions- und Expansionshüben in dem Motorzylinder (4).
  4. Elektronisches Steuersystem nach einem der vorangegangenen Ansprüche, bei welchem das Bestimmen der In-Zylinder Druckwerte (P[i]) umfasst:
    - erzeugen eines In-Zylinder Drucksignales (P(t)), indikativ für einen Druck in dem Motorzylinder (4); und
    - konstant-Frequenz sampeln des In-Zylinder Drucksignales (P(t)).
  5. Elektronisches Steuersystem nach einem der vorangegangenen Ansprüche, bei welchem die Brennstoffverbrennungscharakteristik (ϑMFB50%) eine ist unter einem Motorkurbelwellenwinkel entsprechend einem Start einer Brennstoffverbrennung in dem Motorzylinder, einem Motorkurbelwellenwinkel, entsprechend einer Spitze in einem In-Zylinder Druck, und einem Motorkurbelwellenwinkel, bei welchem ein gegebener Massenanteil (MFB50%) von in dem Motorzylinder (4) eingespritztem Brennstoff verbrannt ist oder wurde.
EP06425629.0A 2006-09-13 2006-09-13 Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine Not-in-force EP1905994B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06425629.0A EP1905994B1 (de) 2006-09-13 2006-09-13 Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06425629.0A EP1905994B1 (de) 2006-09-13 2006-09-13 Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1905994A1 EP1905994A1 (de) 2008-04-02
EP1905994B1 true EP1905994B1 (de) 2014-11-05

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Application Number Title Priority Date Filing Date
EP06425629.0A Not-in-force EP1905994B1 (de) 2006-09-13 2006-09-13 Verfahren zum Steuern des Verbrennungszeitpunkts in einer Brennkraftmaschine

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5167928B2 (ja) 2008-04-24 2013-03-21 株式会社デンソー 燃焼制御装置
DE102010043966A1 (de) * 2010-11-16 2012-05-16 Robert Bosch Gmbh Verfahren und Vorrichtung zur Regelung eines Ottomotors im Selbstzündungsbetrieb

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0112338D0 (en) * 2001-05-21 2001-07-11 Ricardo Consulting Eng Improved engine management
US6805099B2 (en) * 2002-10-31 2004-10-19 Delphi Technologies, Inc. Wavelet-based artificial neural net combustion sensing
US7021287B2 (en) * 2002-11-01 2006-04-04 Visteon Global Technologies, Inc. Closed-loop individual cylinder A/F ratio balancing

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