EP2518297A3 - Detection and reduction of an injection volume difference in a combustion engine with multiple cylinders - Google Patents

Detection and reduction of an injection volume difference in a combustion engine with multiple cylinders Download PDF

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Publication number
EP2518297A3
EP2518297A3 EP12001303.2A EP12001303A EP2518297A3 EP 2518297 A3 EP2518297 A3 EP 2518297A3 EP 12001303 A EP12001303 A EP 12001303A EP 2518297 A3 EP2518297 A3 EP 2518297A3
Authority
EP
European Patent Office
Prior art keywords
pressure
pressure values
cylinder
cylinders
combustion engine
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
EP12001303.2A
Other languages
German (de)
French (fr)
Other versions
EP2518297B1 (en
EP2518297A2 (en
Inventor
Franz Kallage
Matthias Schultalbers
Olaf Magnor
Andreas Sprysch
Christian Steinbrecher
Martin Schewik
Andreas Berns
Lars Hentschel
Kay Dr. Schintzel
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP2518297A2 publication Critical patent/EP2518297A2/en
Publication of EP2518297A3 publication Critical patent/EP2518297A3/en
Application granted granted Critical
Publication of EP2518297B1 publication Critical patent/EP2518297B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2464—Characteristics of actuators
    • F02D41/2467—Characteristics of actuators for injectors
    • 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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
    • 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
    • F02D41/28—Interface circuits
    • F02D2041/286—Interface circuits comprising means for signal processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure

Abstract

Die vorliegende Erfindung betrifft ein Verfahren und eine Vorrichtung (61) zur Bestimmung eines Einspritzmengenunterschieds bei einem Verbrennungsmotor (1) mit mehreren Zylindern (2-5). Der Verbrennungsmotor (1) umfasst ein Druckrohr (14) zur Zuführung von Kraftstoff zu Einspritzventilen (6-9) der mehreren Zylinder (2-5). Für zumindest einen ersten Zylinder und einen zweiten Zylinder der mehreren Zylinder (2-5) werden jeweils mehrere zeitlich aufeinanderfolgende erste Druckwerte (23) in dem Druckrohr (14) vor einer Kraftstoffeinspritzung (22) in den jeweiligen Zylinder erfasst und mehrere zeitlich aufeinanderfolgende zweite Druckwerte (24) in dem Druckrohr (14) nach der Kraftstoffeinspritzung (22) in den jeweiligen Zylinder erfasst. Die mehreren ersten Druckwerte (23) und die mehreren zweiten Druckwerte (24) werden jeweils für den jeweiligen Zylinder statistisch analysiert und ein Druckdifferenzwert (25) wird für den jeweiligen Zylinder auf der Grundlage der mehreren ersten Druckwerte (23) und der mehren zweiten Druckwerte (24) bestimmt, wenn die mehreren ersten Druckwerte (23) und die mehreren zweiten Druckwerte (24) vorbestimmte statistische Eigenschaften erfüllen. In Abhängigkeit von den Druckdifferenzwerten (25) der jeweiligen Zylinder werden Einspritzmengenunterschiede zwischen den Zylindern bestimmt.

Figure imgaf001
The present invention relates to a method and an apparatus (61) for determining an injection quantity difference in a multi-cylinder internal combustion engine (1) (2-5). The internal combustion engine (1) comprises a pressure pipe (14) for supplying fuel to injection valves (6-9) of the plurality of cylinders (2-5). For at least one first cylinder and one second cylinder of the plurality of cylinders (2-5), a plurality of temporally successive first pressure values (23) in the pressure pipe (14) are detected before a fuel injection (22) into the respective cylinder and a plurality of chronologically successive second pressure values (24) in the pressure tube (14) after the fuel injection (22) detected in the respective cylinder. The plurality of first pressure values (23) and the plurality of second pressure values (24) are respectively statistically analyzed for the respective cylinder and a pressure differential value (25) is determined for the respective cylinder based on the plurality of first pressure values (23) and the plurality of second pressure values (23). 24) when the plurality of first pressure values (23) and the plurality of second pressure values (24) satisfy predetermined statistical characteristics. In dependence on the pressure difference values (25) of the respective cylinders, injection quantity differences between the cylinders are determined.
Figure imgaf001
EP12001303.2A 2011-04-30 2012-02-28 Detection and reduction of an injection volume difference in a combustion engine with multiple cylinders Active EP2518297B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011100109A DE102011100109A1 (en) 2011-04-30 2011-04-30 Determination and reduction of an injection quantity difference in a multi-cylinder internal combustion engine

Publications (3)

Publication Number Publication Date
EP2518297A2 EP2518297A2 (en) 2012-10-31
EP2518297A3 true EP2518297A3 (en) 2014-03-05
EP2518297B1 EP2518297B1 (en) 2016-02-24

Family

ID=45874638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12001303.2A Active EP2518297B1 (en) 2011-04-30 2012-02-28 Detection and reduction of an injection volume difference in a combustion engine with multiple cylinders

Country Status (2)

Country Link
EP (1) EP2518297B1 (en)
DE (1) DE102011100109A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019205687B4 (en) * 2019-04-18 2021-08-05 Vitesco Technologies GmbH Method and device for regulating the fuel mass injected into the cylinders of an internal combustion engine
DE102020210984B4 (en) * 2020-08-31 2022-07-07 Vitesco Technologies GmbH Method and device for determining a fluid injection quantity of an injection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1085193A2 (en) * 1999-09-20 2001-03-21 Isuzu Motors Limited Common-rail fuel-injection system
US6304208B1 (en) * 1999-01-19 2001-10-16 Kabushiki Kaisha Toshiba Successive approximation analog-to-digital converter circuit
US20090164086A1 (en) * 2007-12-20 2009-06-25 Mert Geveci System for determining critical on-times for fuel injectors
DE102008016662A1 (en) * 2008-04-01 2009-10-15 Continental Automotive Gmbh Method for injecting fuel in vehicle engine, involves maintaining fuel pressure in high pressure storage tank, and injecting fuel into cylinder of vehicle engine by temporally controlled injector
DE102008033754A1 (en) * 2008-07-18 2010-01-21 Continental Automotive Gmbh Method for determining the mass of the injected fuel

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186034A (en) 1986-02-10 1987-08-14 Toyota Motor Corp Fuel injector for internal combustion engine
JP2859049B2 (en) 1992-09-17 1999-02-17 株式会社日立製作所 Throttle valve control device for internal combustion engine
JP3155694B2 (en) 1995-11-09 2001-04-16 株式会社日立製作所 Apparatus and method for controlling throttle valve
DE102005006361A1 (en) * 2005-02-11 2006-08-24 Robert Bosch Gmbh Motor vehicle`s internal combustion engine operating method, involves detecting pressure difference arising in fuel manifold during fuel injection, where manifold is made into closed system for detection of pressure difference in manifold
DE102006002738A1 (en) * 2006-01-20 2007-08-02 Robert Bosch Gmbh Control system for fuel injectors, at a motor common rail assembly, uses signals and adapted correction values to maintain a long-term consistent performance without sensors/actuators
DE102007030713A1 (en) * 2007-07-02 2009-01-08 Robert Bosch Gmbh Method for plausibilizing the output signal of a rail pressure sensor
AT10073U9 (en) * 2008-01-14 2009-02-15 Avl List Gmbh METHOD AND DEVICE FOR ANALYZING AND EVALUATING MEASUREMENT DATA OF A MEASURING SYSTEM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304208B1 (en) * 1999-01-19 2001-10-16 Kabushiki Kaisha Toshiba Successive approximation analog-to-digital converter circuit
EP1085193A2 (en) * 1999-09-20 2001-03-21 Isuzu Motors Limited Common-rail fuel-injection system
US20090164086A1 (en) * 2007-12-20 2009-06-25 Mert Geveci System for determining critical on-times for fuel injectors
DE102008016662A1 (en) * 2008-04-01 2009-10-15 Continental Automotive Gmbh Method for injecting fuel in vehicle engine, involves maintaining fuel pressure in high pressure storage tank, and injecting fuel into cylinder of vehicle engine by temporally controlled injector
DE102008033754A1 (en) * 2008-07-18 2010-01-21 Continental Automotive Gmbh Method for determining the mass of the injected fuel

Also Published As

Publication number Publication date
DE102011100109A1 (en) 2012-10-31
EP2518297B1 (en) 2016-02-24
EP2518297A2 (en) 2012-10-31

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