[go: up one dir, main page]

EP1226355B1 - Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant - Google Patents

Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant Download PDF

Info

Publication number
EP1226355B1
EP1226355B1 EP00984821A EP00984821A EP1226355B1 EP 1226355 B1 EP1226355 B1 EP 1226355B1 EP 00984821 A EP00984821 A EP 00984821A EP 00984821 A EP00984821 A EP 00984821A EP 1226355 B1 EP1226355 B1 EP 1226355B1
Authority
EP
European Patent Office
Prior art keywords
fuel
supply system
fuel supply
frequency
frequency spectrum
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
EP00984821A
Other languages
German (de)
English (en)
Other versions
EP1226355A1 (fr
Inventor
Thomas Frenz
Hansjoerg Bochum
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 EP1226355A1 publication Critical patent/EP1226355A1/fr
Application granted granted Critical
Publication of EP1226355B1 publication Critical patent/EP1226355B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • 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
    • 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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • 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
    • F02D2041/1413—Controller structures or design
    • F02D2041/1432—Controller structures or design the system including a filter, e.g. a low pass or high pass filter
    • 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
    • F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the 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
    • F02D41/22—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
    • F02D41/24—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
    • F02D2041/288—Interface circuits comprising means for signal processing for performing a transformation into the frequency domain, e.g. Fourier transformation
    • 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
    • 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
    • F02D2200/0604—Estimation of fuel pressure

Definitions

  • a fuel supply system of an internal combustion engine serves to fuel the engine from a Supply fuel tank.
  • the fuel is here from a fuel pump from the fuel tank a pressure line to one of the internal combustion engine located fuel rail with injectors pumped.
  • At the fuel rail or elsewhere in the fuel supply system is usually a Pressure sensor arranged.
  • the pressure sensor is the Fuel pressure measured in the fuel supply system and forwarded to a scheme.
  • the regulation holds the Pressure in the fuel supply system, in particular in the fuel rail, to a predetermined value.
  • the Not required by the internal combustion engine amount of fuel is usually from the fuel rail over a Return line led back into the fuel tank.
  • the fuel supply system may be referred to as a high pressure fuel delivery system, in particular as a common rail accumulator injection system for a direct injection Internal combustion engine, be formed in the one High-pressure fuel storage as fuel distributor is provided.
  • a high pressure fuel delivery system in particular as a common rail accumulator injection system for a direct injection Internal combustion engine, be formed in the one High-pressure fuel storage as fuel distributor is provided.
  • Fuel is removed from the fuel tank by a Electric fuel pump trained prefeed pump initially fed to a downstream high-pressure pump.
  • the High-pressure pump then delivers the fuel with a very high pressure in the high-pressure fuel storage, from where from he about the trained as injectors Injectors in a combustion chamber of the internal combustion engine ' arrives.
  • Pressure sensors arranged to control the fuel pressure in the High-pressure fuel storage for the regulation of To measure fuel pressure.
  • Such Fuel supply system is, for example, from the DE 195 39 885 A1.
  • the invention proposes starting from the method for diagnosing a Fuel supply system of the type mentioned suggest that when the amplitude of the Frequency component of the n-times the fundamental frequency of Fuel pump the deviation than from a fault of the Fuel pump is called, where n the number of cylinders of the fuel pump corresponds.
  • the course of the fuel pressure in the Fuel supply system can, for example, on the basis of a physical model of the fuel supply system be determined. This will be the physical model State variables of the fuel supply system and / or supplied to the internal combustion engine, from which the course of the Fuel pressure is modeled.
  • the fuel pressure in the Fuel supply system by means of a Pressure sensor measured.
  • a pressure sensor is usually in the fuel supply system for Detecting the fuel pressure for a control of Fuel pressure in the fuel supply system already available and can also be used to hold the Fuel pressure curve according to the present invention be used.
  • the frequency spectrum of the Fuel pressure curve formed is advantageously by means of a Fourier transformation of the Fuel pressure curve formed.
  • a characteristic frequency spectrum of the Fuel pressure curve By the way of working the fuel pump in the fuel supply system it comes to a characteristic frequency spectrum of the Fuel pressure curve.
  • a failure of the fuel supply system is the Frequency spectrum analyzed.
  • the frequency spectrum of the Fuel pressure curve in a faultless Fuel supply system one for each Fuel supply system characteristic course. Change certain errors of the fuel supply system the characteristic course of the frequency spectrum in a certain way. As part of the analysis of Frequency spectrum is trying these changes of the to recognize characteristic course and from the To close changes on the causative error. To recognize the changes of the characteristic Gradually, the frequency spectrum is, for example, with Thresholds compared. An increase or a fall The amplitude of the frequency spectrum can by a Comparison with corresponding amplitude thresholds be recognized. Similarly, a move of characteristic frequency components towards higher or lower frequencies by comparing with corresponding frequency thresholds are detected. The Linking a certain change in the characteristic course of the frequency spectrum with the causing error can, for example, by means of a Expert system. With the invention Procedure is thus a differentiated diagnosis of a Fault of the fuel supply system possible.
  • the course of the recorded Frequency spectrum is preferably with the course of the Frequency spectrum of a fault-free at this operating point working fuel supply system compared.
  • a Fuel supply system in which an n-cylinder fuel pump with a certain fundamental frequency is arranged, with a decrease in the amplitude of the Frequency component of the n-times the fundamental frequency of Fuel pump the deviation than from a fault of the Fuel pump caused classified.
  • a direct injection Internal combustion engine arise during operation of the Fuel pump pressure pulsations with n times Fundamental frequency of a work cycle.
  • the invention is prior to classifying the deviations the nature of the error the relevance of the deviations assessed. Slight deviations of the characteristic Course of the frequency spectrum, which is the cause in Temperature fluctuations or tolerances of Fuel supply system may have so remain unconsidered. Only such deviations as be judged significantly in the diagnosis of the Fuel supply system considered.
  • Invention is proposed that with an increase in the Amplitude of the frequency component of the 1-fold fundamental frequency the fuel pump's deviation than from a fault one of the pump cylinder of the fuel pump caused is classified.
  • the fundamental frequency of Fuel pump In the characteristic course of the Frequency spectrum of a faultless working Fuel supply system is at the fundamental frequency of Fuel pump only a frequency share with a to recognize relatively low amplitude.
  • the frequency component at the fundamental frequency of the fuel pump increases is This is a sure sign that a mistake is one of Pump cylinder of the fuel pump is present.
  • the present invention relates to a method for Diagnosis of a fuel supply system of a Internal combustion engine.
  • Method a differentiation of the error to individual Components of the fuel supply system.
  • an error of Fuel pump of the fuel supply system be diagnosed.
  • the fuel supply system in which the inventive method is used is preferably as a common rail accumulator injection system a direct-injection internal combustion engine is formed.
  • Common rail accumulator injection systems become fuel from a fuel tank by an as Electric fuel pump trained prefeed pump initially fed to a downstream high-pressure pump.
  • the High-pressure pump promotes the fuel with a very high pressure in a high-pressure fuel storage, from where from he injectors into a combustion chamber of the Internal combustion engine passes.
  • the of the internal combustion engine Unnecessary fuel quantity usually flows through the high-pressure fuel storage via a return line back into the fuel tank.
  • High-pressure fuel storage is a high-pressure sensor arranged, the fuel pressure in the High-pressure fuel storage measures and one High pressure control feeds the fuel pressure in the High-pressure fuel storage to a predetermined value regulates.
  • a function block 1 in Figure 1 is the inventive method started.
  • the recording of the course of the fuel pressure can be continuous, at regular times or too selected times.
  • a functional block 3 the frequency spectrum of the measured fuel pressure curve formed.
  • the Frequency spectrum is, for example, by means of a Fourier transform formed. Subsequently, the Frequency spectrum analyzed. This is done in one Function block 4, first, the frequency component of n times Basic frequency of the fuel pump with a speed-dependent amplitude threshold compared. Of Furthermore, the frequency component of the fundamental frequency of Fuel pump with another speed-dependent Amplitude threshold compared.
  • a diagnosis of a common rail storage injection system performed in which a 3-cylinder high-pressure pump is working.
  • the pressure pulsations are in the Frequency spectrum of the fuel pressure curve at 3 times Basic frequency of the high pressure pump with a Recognize frequency component with a relatively large amplitude.
  • An error in the high-pressure pump causes a drop the amplitude of this frequency component being detected.
  • an error causes one of the pump cylinders of the High pressure pump in addition to an increase in Amplitude of the frequency component at the fundamental frequency of High pressure feed pump.
  • the decrease or increase in the amplitudes of these Frequency components can be determined by amplitude thresholds be determined, which fell below or exceeded become. For this purpose, it is checked in a query block 5, if the Course of the frequency spectrum at 1-fold and 3-fold Basic frequency of the high-pressure pump above or is below a predetermined amplitude threshold. If No, the high-pressure pump is OK (Function block 6) and the inventive method returns back to the function block 1.
  • the dashed line between the function block 6 and the function block 1 should clarify that the method according to the present Embodiment not continuous, but cyclic or triggered.
  • Function block 7 If the frequency spectrum recorded Fuel pressure curve has deviations in the 1-fold or at the 3-fold fundamental frequency of High-pressure pump the predetermined amplitude thresholds exceed or fall short, is the High pressure pump defective (function block 7). In one Function block 8 is then set a fault memory.
  • FIG. 2 shows the measured course of the fuel pressure in the high-pressure fuel storage over a period of 0.5 seconds.
  • the fuel pressure was at a speed of the internal combustion engine of 2080 U / min measured.
  • the fundamental frequency of the working cycle of the 3-cylinder high-pressure pump of the common rail storage injection system is 17.3 Hz.

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)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé et un dispositif de diagnostic d'un système d'alimentation en carburant d'un moteur à combustion interne. L'invention a pour objet la différenciation de l'erreur en fonction des différents composants du système d'alimentation en carburant. A cet effet, un procédé est caractérisé en ce que: on détecte l'allure de la pression du carburant dans le système d'alimentation en carburant (2); on forme le spectre de fréquences de l'allure de pression de carburant (3); et on analyse le spectre de fréquences (4, 5). L'analyse du spectre de fréquences comprend, de préférence, les étapes suivantes: - comparaison de la courbe du spectre de fréquences enregistré et de la courbe du spectre de fréquences d'un système d'alimentation en carburant fonctionnant sans erreur dans ce point de fonctionnement; et classification des écarts d'après la nature des erreurs du système d'alimentation en carburant, par lesquels ces erreurs sont produites, lorsque des écarts se produisent entre les courbes des spectres de fréquences.

Claims (8)

  1. Procédé de diagnostic d'un système d'alimentation en carburant qui, dans un moteur à combustion interne, comporte une pompe à carburant à n cylindres et à une fréquence de base définie, et dont les étapes de procédé sont les suivantes :
    on enregistre le tracé de la pression de carburant dans le système d'alimentation en carburant (2),
    on forme le spectre de fréquences du tracé de la pression de carburant (3),
    on compare le tracé du spectre de fréquences enregistré au tracé du spectre de fréquences dans un système d'alimentation en carburant qui fonctionne sans erreur, et
    s'il y a des différences entre les tracés des spectres de fréquences, on classe les différences d'après le type des erreurs - dans le système d'alimentation en carburant - qui ont provoqué les différences,
    caractérisé en ce que
    lorsque la partie de fréquence qui représente n fois la fréquence de base de la pompe à carburant baisse en amplitude, la différence est mise au compte (4) d'une erreur de la pompe de carburant, n étant le nombre des cylindres de la pompe à carburant.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la pression de carburant dans le système d'alimentation en carburant est mesurée à l'aide d'un capteur de pression.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'
    avant de classer les différences d'après le type d'erreur, on évalue l'importance des différences.
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que le spectre de fréquences du tracé de la pression de carburant est formé à l'aide d'une transformation de Fourier réalisée sur le tracé de la pression de carburant.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que
    lorsque la partie de fréquence qui représente 1 fois la fréquence de base de la pompe à carburant augmente en amplitude, la différence est mise au compte (4) d'une erreur du cylindre de pompe dans la pompe à carburant.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que
    des seuils d'amplitudes qui sont dépassés ou ne sont pas atteints (5) servent à déterminer que l'amplitude de la partie de fréquence augmente ou diminue.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    avant d'analyser le spectre de fréquences, on soustrait la moyenne de la pression à carburant enregistrée.
  8. Dispositif pour diagnostiquer un système d'alimentation en carburant dans un moteur à combustion interne, qui comporte une pompe à carburant à n cylindres et à une fréquence de base définie, avec :
    des moyens pour enregistrer le tracé de la pression de carburant dans le système d'alimentation en carburant (2),
    des moyens pour former le spectre de fréquence du tracé de la pression de carburant (3),
    des moyens pour comparer le tracé du spectre de fréquences enregistré au tracé du spectre de fréquences dans un système d'alimentation en carburant qui fonctionne sans erreur, et
    s'il y a des différences entre les tracés des spectres de fréquences, des moyens pour classer les différences d'après le type des erreurs - dans le système d'alimentation en carburant - qui ont provoqué les différences,
    caractérisé en ce que
    lorsque la partie de fréquence qui représente n fois la fréquence de base de la pompe à carburant baisse en amplitude, les moyens pour classer les différences mettent la différence au compte d'une erreur de la pompe à carburant, n étant le nombre des cylindres de la pompe à carburant.
EP00984821A 1999-10-19 2000-10-07 Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant Expired - Lifetime EP1226355B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19950222 1999-10-19
DE19950222A DE19950222A1 (de) 1999-10-19 1999-10-19 Verfahren und Vorrichtung zur Diagnose eines Kraftstoffversorgungssystems
PCT/DE2000/003531 WO2001029411A1 (fr) 1999-10-19 2000-10-07 Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant

Publications (2)

Publication Number Publication Date
EP1226355A1 EP1226355A1 (fr) 2002-07-31
EP1226355B1 true EP1226355B1 (fr) 2005-08-31

Family

ID=7926089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00984821A Expired - Lifetime EP1226355B1 (fr) 1999-10-19 2000-10-07 Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant

Country Status (6)

Country Link
US (1) US6901791B1 (fr)
EP (1) EP1226355B1 (fr)
JP (1) JP2003512566A (fr)
KR (1) KR100668576B1 (fr)
DE (2) DE19950222A1 (fr)
WO (1) WO2001029411A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127510A1 (fr) * 2008-04-15 2009-10-22 Robert Bosch Gmbh Procédé et dispositif de détermination du volume déplacé par une pompe d'injection

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7029238B1 (en) * 1998-11-23 2006-04-18 Mykrolis Corporation Pump controller for precision pumping apparatus
US8172546B2 (en) * 1998-11-23 2012-05-08 Entegris, Inc. System and method for correcting for pressure variations using a motor
US6840222B2 (en) 2000-05-03 2005-01-11 Robert Bosch Gmbh Method and device for monitoring a fuel system of an internal combustion engine
US7013223B1 (en) * 2002-09-25 2006-03-14 The Board Of Trustees Of The University Of Illinois Method and apparatus for analyzing performance of a hydraulic pump
DE10259797A1 (de) 2002-12-19 2004-07-15 Siemens Ag Vorrichtung und Verfahren zum Erkennen von Fehlern in einem Kraftstoffeinspritzsystem
DE10302806B4 (de) * 2003-01-24 2004-12-09 Siemens Ag Verfahren zur Berechnung von Druckschwankungen in einem Kraftstoffversorgungssystem einer mit Kraftstoff-Direkteinspritzung arbeitenden Brennkraftmaschine und zur Steuerung derer Einspritzventile
DE10305372B4 (de) 2003-02-10 2009-01-08 Continental Automotive Gmbh Vorrichtung und Verfahren zum Erkennen von Fehlern in einem einen Kraftstoffdruckdämpfer aufweisenden Kraftstoffeinspritzsystem
DE10347517B3 (de) * 2003-10-13 2005-06-02 Siemens Ag Verfahren und Vorrichtung zum Überwachen eines Impulsladeventils einer Brennkraftmaschine
KR101231945B1 (ko) 2004-11-23 2013-02-08 엔테그리스, 아이엔씨. 가변 홈 위치 토출 장치용 시스템 및 방법
DE102004062029A1 (de) * 2004-12-23 2006-07-13 Robert Bosch Gmbh Überwachung einer Mehrkolbenpumpe
JP4866682B2 (ja) * 2005-09-01 2012-02-01 株式会社フジキン 圧力センサを保有する流量制御装置を用いた流体供給系の異常検出方法
WO2007061956A2 (fr) 2005-11-21 2007-05-31 Entegris, Inc. Systeme et procede pour une pompe avec facteur de forme reduit
US8753097B2 (en) 2005-11-21 2014-06-17 Entegris, Inc. Method and system for high viscosity pump
US8025486B2 (en) * 2005-12-02 2011-09-27 Entegris, Inc. System and method for valve sequencing in a pump
US8083498B2 (en) 2005-12-02 2011-12-27 Entegris, Inc. System and method for position control of a mechanical piston in a pump
US7850431B2 (en) * 2005-12-02 2010-12-14 Entegris, Inc. System and method for control of fluid pressure
JP5366555B2 (ja) 2005-12-02 2013-12-11 インテグリス・インコーポレーテッド ポンプ内の圧力補償のためのシステムおよび方法
US7878765B2 (en) * 2005-12-02 2011-02-01 Entegris, Inc. System and method for monitoring operation of a pump
CN101356488B (zh) 2005-12-02 2012-05-16 恩特格里公司 与泵控制器对接的i/o系统、方法和设备
WO2007067343A2 (fr) * 2005-12-02 2007-06-14 Entegris, Inc. Raccords et ensembles raccords peu volumineux sans joint torique
CN101360678B (zh) * 2005-12-05 2013-01-02 恩特格里公司 用于泵的误差容积系统和方法
TWI402423B (zh) 2006-02-28 2013-07-21 Entegris Inc 用於一幫浦操作之系統及方法
US7684446B2 (en) * 2006-03-01 2010-03-23 Entegris, Inc. System and method for multiplexing setpoints
US7494265B2 (en) * 2006-03-01 2009-02-24 Entegris, Inc. System and method for controlled mixing of fluids via temperature
EP1870586B1 (fr) * 2006-06-16 2018-12-05 Delphi International Operations Luxembourg S.à r.l. Appareil pour détecter et identifier les défaillances de composants dans un système de carburant
US20080006089A1 (en) * 2006-07-07 2008-01-10 Sarmad Adnan Pump integrity monitoring
US7643945B2 (en) * 2006-12-28 2010-01-05 Schlumberger Technology Corporation Technique for acoustic data analysis
US7710121B2 (en) * 2007-02-28 2010-05-04 Federal Mogul Corporation Electrical connector integrity tester
DE102007030713A1 (de) * 2007-07-02 2009-01-08 Robert Bosch Gmbh Verfahren zur Plausibilisierung des Ausgangssignals eines Raildrucksensors
JP2009191778A (ja) * 2008-02-15 2009-08-27 Hitachi Ltd 高圧燃料システムの制御診断装置
US20100101785A1 (en) * 2008-10-28 2010-04-29 Evgeny Khvoshchev Hydraulic System and Method of Monitoring
DE102010005049B4 (de) 2009-02-05 2021-12-09 Robert Bosch Gmbh Verfahren zum Erkennen von Fehlern in hydraulischen Verdrängermaschinen
US8494706B2 (en) 2011-08-19 2013-07-23 Federal-Mogul Corporation Electric fuel pump tester and method
DE102011082459B4 (de) 2011-09-09 2013-11-07 Continental Automotive Gmbh Verfahren zur Analyse des Wirkungsgrades der Hochdruckpumpe eines Kraftstoffeinspritzsystems
EP2791496B1 (fr) * 2011-12-13 2017-09-20 Scania CV AB Dispositif et procédé pour la détection d'anomalie dans un système d'alimentation en carburant d'un véhicule à moteur
CN104114849A (zh) * 2011-12-13 2014-10-22 斯堪尼亚商用车有限公司 用于在机动车辆的燃料供应系统中进行故障检测的设备和方法
US9032788B2 (en) 2012-04-13 2015-05-19 Caterpillar Inc. Common rail system fault diagnostic using digital resonating filter
US9797395B2 (en) * 2015-09-17 2017-10-24 Schlumberger Technology Corporation Apparatus and methods for identifying defective pumps
JP6281580B2 (ja) * 2016-01-27 2018-02-21 トヨタ自動車株式会社 内燃機関の制御装置
DE102017217113A1 (de) * 2017-09-26 2019-03-28 Robert Bosch Gmbh Verfahren zum Betreiben eines Verbrennungsmotors und elektronisches Steuergerät für einen Verbrennungsmotor
GB2569579A (en) * 2017-12-20 2019-06-26 Delphi Tech Ip Ltd Method of determining rail pressure in a common rail fuel system
DE102018210470A1 (de) * 2018-06-27 2020-01-02 Robert Bosch Gmbh Verfahren zur Schadensfrüherkennung, sowie Programm und Steuergerät zum Ausführen des Verfahrens
US20200125123A1 (en) * 2018-10-18 2020-04-23 Parker-Hannifin Corporation Hydraulic pump health monitoring
DE102018127686A1 (de) * 2018-11-06 2020-05-07 Mtu Friedrichshafen Gmbh Verfahren zur Überwachung einer Hochdruckpumpe einer ein Common-Rail-System aufweisenden Brennkraftmaschine, Motorsteuergerät und Brennkraftmaschine
KR20200144246A (ko) * 2019-06-18 2020-12-29 현대자동차주식회사 연료분사량 보정방법 및 시스템
DE102020207332A1 (de) * 2020-06-12 2021-12-16 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und System zum Erkennen einer Einschränkung einer Brennstoffversorgung eines Common-Rail-Systems
CN113062811B (zh) * 2021-03-08 2022-02-22 哈尔滨工程大学 一种根据喷油器入口压力信号的频谱特征对喷油过程关键时间特征识别的方法
CN115387903B (zh) * 2022-05-20 2024-04-19 潍柴动力股份有限公司 柴油机的故障检测方法、装置、动力装置及介质

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5445019A (en) * 1993-04-19 1995-08-29 Ford Motor Company Internal combustion engine with on-board diagnostic system for detecting impaired fuel injectors
US5499538A (en) 1994-03-03 1996-03-19 Ford Motor Company On-board detection of fuel pump malfunction
DE19539885A1 (de) * 1995-05-26 1996-11-28 Bosch Gmbh Robert Kraftstoffversorgungsanlage und Verfahren zum Betreiben einer Brennkraftmaschine
DE19520300A1 (de) * 1995-06-02 1996-12-05 Bosch Gmbh Robert Einrichtung zur Erkennung eines Lecks in einem Kraftstoffversorgungssystem
DE19548279B4 (de) * 1995-09-28 2006-12-14 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems
US6053147A (en) 1998-03-02 2000-04-25 Cummins Engine Company, Inc. Apparatus and method for diagnosing erratic pressure sensor operation in a fuel system of an internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127510A1 (fr) * 2008-04-15 2009-10-22 Robert Bosch Gmbh Procédé et dispositif de détermination du volume déplacé par une pompe d'injection
DE102008001182A1 (de) 2008-04-15 2009-10-22 Robert Bosch Gmbh Verfahren bzw. Vorrichtung zur Ermittlung des Fördervolumens einer Einspritzpumpe
CN102007288A (zh) * 2008-04-15 2011-04-06 罗伯特·博世有限公司 用于求得喷射泵的供给量的方法以及装置
CN102007288B (zh) * 2008-04-15 2014-01-08 罗伯特·博世有限公司 用于求得喷射泵的供给量的方法以及装置

Also Published As

Publication number Publication date
JP2003512566A (ja) 2003-04-02
KR20020038957A (ko) 2002-05-24
EP1226355A1 (fr) 2002-07-31
US6901791B1 (en) 2005-06-07
WO2001029411A1 (fr) 2001-04-26
DE50011078D1 (de) 2005-10-06
KR100668576B1 (ko) 2007-01-18
DE19950222A1 (de) 2001-04-26

Similar Documents

Publication Publication Date Title
EP1226355B1 (fr) Procede et dispositif destine au diagnostic d'un systeme d'alimentation de carburant
DE102009056790B4 (de) Diagnostiksystem und -Verfahren für eine Kraftstoffeinspritzeinrichtung für einen Motor mit Direkteinspritzung
DE102005043017B4 (de) Common-Rail-Kraftstoffeinspritzsystem
EP0748930B1 (fr) Méthode de détection de fautes de fonctionnement d'un dispositif d'injection de carburant pour moteur à combustion
DE102010013602B4 (de) Verfahren zur Erkennung eines Fehlverhaltens eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors
DE102012218176B4 (de) Verfahren zum Betreiben eines Kraftstoffeinspritzsystems
DE102012111162B4 (de) Kraftstoffdrucksensor-Diagnosevorrichtung
DE102007028900A1 (de) Verfahren und Vorrichtung zur Diagnose eines mit einer Kraftstoffverteilerleiste in Verbindung stehenden Einspritzventils einer Brennkraftmaschine
DE112015005027B4 (de) Kraftstoffeinspritzsteuervorrichtung für eine interne Verbrennungsmaschine
WO2017021183A1 (fr) Procédé de détection de composants défectueux dans un système d'injection de carburant
EP1856394B1 (fr) Procede et dispositif pour surveiller un dispositif d'injection d'un moteur a combustion interne
EP3814619B1 (fr) Procédé de réglage du comportement d'injection d'injecteurs d'un moteur à combustion, appareil de commande de moteur et moteur à combustion interne
DE69704681T2 (de) Verfahren und Einrichtung zur Feststellung von Störungen der Einspritzdüse eines Hochdruck-Kraftstoffeinspritzsystems einer Brennkraftmaschine
WO2013034479A1 (fr) Procédé d'analyse du rendement d'une pompe haute pression d'un système d'injection de carburant
DE69822090T2 (de) Steuerungsverfahren für luftverdichtende Brennkraftmaschinen
DE102011052137B4 (de) Detektionsabweichungs-Bestimmungsvorrichtung für einen Kraftstoffdrucksensor
EP1526269A2 (fr) Méthode et dispositif de surveillance d'un capteur de pression de carburant
DE102019212214B3 (de) Verfahren zur Diagnose einer Injektorleckage bei einer Brennkraftmaschine, Brennkraftmaschine sowie Computerprogrammprodukt
DE102008032741B3 (de) Verfahren und Diagnosegerät zum Erkennen einer Fehlfunktion an einer Einspritzanlage
WO2016128126A1 (fr) Système d'alimentation en carburant d'un moteur à combustion interne
DE102019212215B3 (de) Verfahren zur Diagnose einer Injektorenfunktionsfähigkeit bei einer Brennkraftmaschine mit einer Mehrzahl von Injektoren, Brennkraftmaschine zur Durchführung eines solchen Verfahrens und Computerprogrammprodukt
DE102012011484A1 (de) Überwachen eines Einspritzvorgangs in einen Verbrennungsmotor
DE102008030870A1 (de) Diagnose bei Brennkraftmaschinen
DE102022122171B4 (de) Verfahren zum Erkennen einer Leckage eines Kraftstoffinjektors während eines Motorbetriebs
WO2020152228A1 (fr) Procédé et unité d'évaluation servant à identifier un dysfonctionnement d'un système d'alimentation en carburant d'un moteur à combustion interne

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020521

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): DE FR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR

REF Corresponds to:

Ref document number: 50011078

Country of ref document: DE

Date of ref document: 20051006

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060601

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20091110

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101102

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20131217

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50011078

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150501