WO1995006814A1 - Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne - Google Patents

Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne Download PDF

Info

Publication number
WO1995006814A1
WO1995006814A1 PCT/EP1994/002922 EP9402922W WO9506814A1 WO 1995006814 A1 WO1995006814 A1 WO 1995006814A1 EP 9402922 W EP9402922 W EP 9402922W WO 9506814 A1 WO9506814 A1 WO 9506814A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
value
duty cycle
control cycles
pump
Prior art date
Application number
PCT/EP1994/002922
Other languages
English (en)
Inventor
Paolo Tubetti
Riccardo Buratti
Stefano Maria Borrione
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
Priority to JP50796095A priority Critical patent/JP3727339B2/ja
Priority to EP94927543A priority patent/EP0668966B1/fr
Priority to DE69409222T priority patent/DE69409222T2/de
Publication of WO1995006814A1 publication Critical patent/WO1995006814A1/fr

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
    • 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
    • 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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
    • 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
    • F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • F02D2041/223—Diagnosis of fuel pressure sensors
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D2041/224—Diagnosis of the fuel system
    • F02D2041/225—Leakage detection
    • 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
    • F02D2041/228—Warning displays
    • 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
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure
    • 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

Definitions

  • the present invention relates to -a- method of diagnosing malfunctioning of the high-pressure circuit of internal combustion engine high-pressure injection systems.
  • a high-pressure injection system substantially comprises a fuel tank, and a high-pressure injector supply circuit in turn comprising a pump for supplying fuel at high pressure to a manifold in turn supplying a number of injectors.
  • the pump presents a pressure regulating solenoid valve for supplying fuel at a predetermined pressure.
  • the high-pressure circuit be monitored continually to prevent operation of the system from being impair e d by a shift in the pressure sensor setting, jamiu. ig or malfunctioning of the control members or injectors, or leakage in the circuit.
  • a method of diagnosing malfunctioning of the high-pressure circuit of internal combustion engine high-pressure injection systems comprising a high-pressure pump for supplying fuel at a pressure value controlled by means of control cycles; characterized in that it comprises the- steps of monitoring quantities correlated to the pressure generated by said pump in successive control cycles; comparing the pattern of said quantities in said successive control cycles with reference values; and generating fault signals in the event said pattern fails to present a predetermined relationship with said reference values.
  • Figure 1 shows an overall diagram of the hydraulic system of an injection system to which the diagnosis method according to the present invention is applied;
  • Figure 2 shows a detail of the pressure regulator of the Figure 1 system
  • Figure 3 shows a -block diagram of the method according to the present invention
  • Figure 4 shows a maximum and minimum reference pressure graph as a function of engine speed
  • Figures 5A, 5B and 5C show pressure and duty cycle graphs with an injector locked in the open position and in three different operating conditions
  • Figure 6 shows the pressure/duty cycle relationship used for congruency testing.
  • a general descri; ion will now be given, with reference to Figure 1, of a high-pressure injection system for internal combustion engines.
  • the system indicated by 1, comprises a tank 2 at atmospheric pressure, connected by a delivery line 5 to a radial-piston pump 6 presenting a pressure regulating solenoid valve (or pressure regulator) 7 connected by drain line 8 to tank 2.
  • Manifold 10 feeds the fuel at high pressure along line ii to a manifold 10 which provides for distributing the fuel to the injectors and damping any fluctuation in pressure caused by the action of the pump and opening of the injectors.
  • Manifold 10 consists of a steel body preferably in the form of a parallelepipedon and in which is formed a cylindrical cavity extending along the length of the manifold and connected to line 11 by a central hole 12.
  • Manifold 10 also presents four holes .:3 spaced along the length of the manifold and connected to four high-pressure (up to- 1500 bar) supply conduits 14 of four injectors 15 of an engine 16. Each injector 15 is also connected to a conduit 17 for recirculating the fuel (for operating the injector) into tank 2.
  • Manifold 10 is fitted at one end with a known pressure sensor 18.
  • Pressure regulator 7 is conveniently formed as shown in Figure 2, and comprises a body 20 defining a conical seat 21 for a spherical shutter 22.
  • shutter 22 is subjected to the combined force of a spring 24 and a solenoid 25 which " cooperates with a core 26 integral with a rod 27 in turn integral with push rod 23.
  • Shutter 22 separates an inlet conduit 28, connected to the body of pump 6, from an outlet conduit 29, connected to line 8; and varying the current supply to solenoid 25 regulates the force exerted on shutter 22 in the closing direction and, hence, the output pressure of pump 6.
  • Pressure is regulated by supplying solenoid 25 with a current whose duty cycle is modulated at a fixed oscillation frequency (PWM - Pulse Width Modulation - technique) and using a closed regulating loop which takes into account the actual pressure measured by pressure sensor 18, and the desired pressure value.
  • the method according to the present invention provides for periodically checking operation of the system 1 components, and more specifically for determining: the ability of pump 6 to generate the required pressure; correct- tightness of regulator 7; the absence of leakage in the circuit; the presence of injectors locked in the open position; correct operation of the electric circuit controlling regulator 7; and the sensitivity and correct operation of pressure sensor 18. According to a preferred embodiment shown schematically in Figure 3, four tests are performed periodically: maximum measured pressure (block 30) ; minimum measured pressure (block 31) ; duty cycle controlling the pressure regulator (block 32) ; and measured pressure/duty cycle congruency (block 33) .
  • the maximum measured pressure test (block 30) consists in determining the pressure measured by sensor 18 in manifold 10 does not exceed a maximum permissible externally set value, e.g. 1600 bar, in a predetermined number of consecutive checks (e.g. five) .
  • a pressure in excess of the maximum permissible value (shown by line A in Figure 4) indicates the following types of fault: a shift in the setting of sensor 18 (measuring error) ; or regulator 7 locked in the closed position (a fault on the regulator preventing or greatly reducing pressurized fuel flow from conduit 28 to conduit 29 of regulator 7) .
  • the minimum measured pressure test (block 31) consists in determining the measured pressure does not fall below a minimum permissible value in a predetermined number of consecutive checks, e.g. five.
  • the minimum permissible value varies according to engine speed, as shown by curve B in Figure 4; and a pressure below the minimum permissible value indicates the following types of fault: an injector locked in the open position; a fault on the pump (fails to ensure the required fuel flow) ; leakage in the circuit; or a shift in the sensor setting.
  • the increase in the minimum permissible value alongside engine speed is important for detecting the presence of an injector locked in the open position, in that, at high engine speed, even with an injector locked in the open position, pressure may fail to fall below values which are acceptable and correspond to efficient operation at low engine speed.
  • Testing of the duty cycle controlling the pressure regulator consists in determining the duty cycle (percentage measurement) does not exceed a predetermined maximum value K2 (e.g. 97%) or fall below a predetermined minimum value Kl (e»g. 2%) in a predetermined number of consecutive checks (e.g. five for the maximum and 25 for the minimum value) .
  • a duty cycle repeatedly in excess of the maximum value means the measured pressure in this period is permanently below the reference value of the system controlling the regulator, and indicates the same faults as the minimum pressure test as well as, possibly, malfunctioning of the electric circuit regulating the duty cycle.
  • a repeatedly low duty cycle value means the measured pressure is permanently in excess of the reference value of the system controlling the regulator, and indicates a shift in- the setting of sensor 18 or overtightness of regulator 7.
  • Figures 5A, 5B and 5C show the pressure curve (dotted line) and duty cycle curve (continuous line) in three different conditions following locking of the injector at cycle 2 of the engine. More specifically, Figure 5A relates to a high-pressure condition, in which case, the fault is detected on the basis of the duty cycle remaining repeatedly in excess of the predetermined limit; Figure 5B relates to a medium-pressure condition, in which case, the fault is again detected on the basis of the excessively high duty cycle value, though more slowly than in Figure 5A; and Figure 5C relates to a low-pressure condition, in which case, the fault is detected by detecting too low a pressure value a given number of times.
  • the measured pressure/duty cycle congruency test exploits the relationship between the duty cycle (or more specifically the effective current supplied to regulator 7) and the pressure measured in manifold 10, which relationship is as shown by curve C in Figure 6 which shows reference pressure PR as a function of effective current. Since curve C varies within certain limits according to the regulator used, reference value PR is assigned an upper and lower tolerance value T (e.g. 300 bar) to give two curves Dl, D2 defining a given acceptance range.
  • T e.g. 300 bar
  • the congruency test consists in determining the duty cycle value of the current supply to solenoid valve 7 according to conveniently proportional-integral algorithms and as a function of actual measured pressure and required pressure (the latter calculated as provided for, e.g. on the basis of engine parameters as described in a further patent application filed by the present Applicant) .
  • the reference value PR corresponding to the determined duty cycle is determined; and a check is made to determine whether the value of the pressure measured by sensor 18 corresponds to reference value PR within the given tolerance (i.e. whether the measured pressure value falls within the given tolerance range) .
  • a pressure value outside the given range in a given number of consecutive checks substantially indicates a shift in the setting of sensor 18 in that, the congruency test being slower than the others, other types of fault are generally detected earlier.

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

Méthode de diagnostic de défaillances d'un circuit à haute pression utilisant une pompe (6) d'alimentation en carburant sous une pression donnée régulée par une vanne électromagnétique (7) commandée par un courant cyclique. Ladite méthode consiste à suivre le volume en corrélation avec la pression engendrée par la pompe (6) au cours des cycles successifs, à comparer les schémas des variations du volume avec des valeurs de référence et à produire des signaux d'alarme lorsqu'un schéma donné ne présente pas certaines relations prédéterminées avec les valeurs de référence. La vérification établit en particulier si la pression d'alimentation en carburant se situe au-delà ou en deçà de valeurs maximales ou minimales, si le cycle de fonctionnement de l'alimentation de la vanne électromagnétique (7) se situe au-delà ou en deçà des limites prédéterminées et s'il y a congruence entre une valeur mesurée de la pression et une valeur de référence calculée en fonction du cycle de fonctionnement.
PCT/EP1994/002922 1993-09-03 1994-09-02 Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne WO1995006814A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50796095A JP3727339B2 (ja) 1993-09-03 1994-09-02 内燃機関高圧噴射装置の高圧回路における障害診断方法
EP94927543A EP0668966B1 (fr) 1993-09-03 1994-09-02 Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne
DE69409222T DE69409222T2 (de) 1993-09-03 1994-09-02 Verfahren zur feststellung von störungen im hochdruckkreis eines hochdruck-kraftstoffeinspritz-systems einer brennkraftmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITT093A000646 1993-09-03
ITTO930646A IT1261575B (it) 1993-09-03 1993-09-03 Metodo di diagnosi di malfunzionamenti del circuito ad alta pressione di impianti di iniezione ad alta pressione per motori a combustione interna

Publications (1)

Publication Number Publication Date
WO1995006814A1 true WO1995006814A1 (fr) 1995-03-09

Family

ID=11411710

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/002922 WO1995006814A1 (fr) 1993-09-03 1994-09-02 Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne

Country Status (5)

Country Link
EP (1) EP0668966B1 (fr)
JP (1) JP3727339B2 (fr)
DE (1) DE69409222T2 (fr)
IT (1) IT1261575B (fr)
WO (1) WO1995006814A1 (fr)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748930A2 (fr) * 1995-06-15 1996-12-18 Mercedes-Benz Ag Méthode de détection de fautes de fonctionnement d'un dispositif d'injection de carburant pour moteur à combustion
WO1997010423A1 (fr) * 1995-09-14 1997-03-20 Robert Bosch Gmbh Procede d'utilisation d'un dispositif d'injection de carburant
EP0780559A2 (fr) * 1995-12-22 1997-06-25 Robert Bosch Gmbh Méthode et dispositif pour commander un moteur à combustion interne
WO1997022791A1 (fr) * 1995-12-20 1997-06-26 Robert Bosch Gmbh Procede et dispositif de controle du systeme de dosage de carburant d'un moteur a combustion interne
FR2744765A1 (fr) * 1996-02-08 1997-08-14 Bosch Gmbh Robert Procede et dispositif de commande d'un moteur a combustion interne
GB2311817A (en) * 1996-04-02 1997-10-08 Daimler Benz Ag Method of detecting operational faults in a common-rail fuel injector system for i.c. engines
WO1997049909A1 (fr) * 1996-06-26 1997-12-31 Robert Bosch Gmbh Procede d'utilisation d'un systeme d'injection de carburant
FR2752881A1 (fr) * 1996-08-29 1998-03-06 Siemens Ag Procede de surveillance d'une pression de carburant
EP0857867A1 (fr) * 1997-02-03 1998-08-12 Robert Bosch Gmbh Méthode et dispositif de détection de fuite
EP0886056A1 (fr) * 1997-06-20 1998-12-23 Robert Bosch Gmbh Méthode et dispositif pour la surveillance d'un système d'alimentation en carburant
FR2797468A1 (fr) * 1999-08-11 2001-02-16 Bosch Gmbh Robert Procede et dispositif de commande d'une installation d'injection de moteur a combustion interne
EP0976921A3 (fr) * 1998-07-31 2001-03-07 Robert Bosch Gmbh Méthode et dispositif de surveillance d'un système d'alimentation en carburant
WO2002001058A1 (fr) * 2000-06-26 2002-01-03 Siemens Aktiengesellschaft Systeme d'injection pour moteur a combustion interne et procede de fonctionnement d'un systeme d'injection
FR2830050A1 (fr) * 2001-09-21 2003-03-28 Bosch Gmbh Robert Procede et dispositif de diagnostic d'un amortisseur de pression dans un systeme de dosage de carburant d'un moteur a combustion interne
WO2003027472A1 (fr) * 2001-09-25 2003-04-03 Robert Bosch Gmbh Procede d'exploitation d'un systeme d'alimentation en carburant de moteur a combustion interne d'automobile
EP1310655A2 (fr) * 2001-11-07 2003-05-14 Denso Corporation Système d'injection de carburant
EP1205657A3 (fr) * 2000-11-14 2003-08-13 C.R.F. Società Consortile per Azioni Méthode de diagnostic de fuite dans un système d'injection à rampe commune de moteur à combustion interne
WO2004057172A1 (fr) * 2002-12-19 2004-07-08 Siemens Aktiengesellschaft Dispositif et procede pour la reconnaissance de defauts dans un systeme d'injection de carburant
WO2006040617A1 (fr) * 2004-10-12 2006-04-20 Ford Otomativ Sanayi Anonim Sirketi Procede et appareil de surveillance de l'injection de carburant
WO2007097226A1 (fr) * 2006-02-21 2007-08-30 Aisan Kogyo Kabushiki Kaisha Système de diagnostic de panne dans un dispositif de commande de charge et système de commande de pompe à carburant
WO2009141199A1 (fr) * 2008-05-23 2009-11-26 Continental Automotive Gmbh Procédé de détection d'un mauvais fonctionnement, notamment d'un écart de capteur de pression de rampe dans un système d'injection à rampe commune
US8176726B2 (en) 2004-05-05 2012-05-15 Robert Bosch Gmbh Method for introducing a reagent medium into an exhaust gas conduit of an internal combustion engine, and apparatus for carrying out the method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493902A (en) * 1994-03-02 1996-02-27 Ford Motor Company On-board detection of pressure regulator malfunction
US5499538A (en) * 1994-03-03 1996-03-19 Ford Motor Company On-board detection of fuel pump malfunction
DE102004037963A1 (de) * 2004-08-05 2006-03-16 Robert Bosch Gmbh Prüfverfahren
JP4591390B2 (ja) * 2006-03-27 2010-12-01 株式会社デンソー ポンプ故障診断装置
WO2013089621A1 (fr) * 2011-12-13 2013-06-20 Scania Cv Ab Dispositif et procédé pour la détection d'anomalie dans un système d'alimentation en carburant d'un véhicule à moteur
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
US8775052B2 (en) 2011-12-15 2014-07-08 GM Global Technology Operations LLC Sensors bias detection for electronic returnless fuel system
DE102016205481A1 (de) * 2016-04-04 2017-10-05 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Dichtheitsprüfung einer Kraftstoff-Hochdruck-Einspritzvorrichtung
DE102018217327B4 (de) * 2018-10-10 2023-10-12 Vitesco Technologies GmbH Verfahren und Vorrichtung zur Plausibilisierung der Funktionsfähigkeit eines Hochdrucksensors einer Hochdruckkraftstoffeinspritzvorrichtung eines Kraftfahrzeugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133906A (en) * 1983-01-20 1984-08-01 Bosch Gmbh Robert Fuel feed control means for a compression ignition internal combustion engine
FR2672640A1 (fr) * 1991-02-08 1992-08-14 Bosch Gmbh Robert Procede de surveillance de defauts, notamment dans les circuits de regulation pour le dosage de carburant.
EP0501459A2 (fr) * 1991-02-27 1992-09-02 Nippondenso Co., Ltd. Système d'injection avec rampe à carburant commune et méthode à cet effet
US5241933A (en) * 1992-02-28 1993-09-07 Fuji Jukogyo Kabushiki Kaisha Abnormality warning system for a direct fuel injection engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133906A (en) * 1983-01-20 1984-08-01 Bosch Gmbh Robert Fuel feed control means for a compression ignition internal combustion engine
FR2672640A1 (fr) * 1991-02-08 1992-08-14 Bosch Gmbh Robert Procede de surveillance de defauts, notamment dans les circuits de regulation pour le dosage de carburant.
EP0501459A2 (fr) * 1991-02-27 1992-09-02 Nippondenso Co., Ltd. Système d'injection avec rampe à carburant commune et méthode à cet effet
US5241933A (en) * 1992-02-28 1993-09-07 Fuji Jukogyo Kabushiki Kaisha Abnormality warning system for a direct fuel injection engine

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0748930A3 (fr) * 1995-06-15 1998-01-14 Daimler-Benz Aktiengesellschaft Méthode de détection de fautes de fonctionnement d'un dispositif d'injection de carburant pour moteur à combustion
EP0748930A2 (fr) * 1995-06-15 1996-12-18 Mercedes-Benz Ag Méthode de détection de fautes de fonctionnement d'un dispositif d'injection de carburant pour moteur à combustion
WO1997010423A1 (fr) * 1995-09-14 1997-03-20 Robert Bosch Gmbh Procede d'utilisation d'un dispositif d'injection de carburant
WO1997022791A1 (fr) * 1995-12-20 1997-06-26 Robert Bosch Gmbh Procede et dispositif de controle du systeme de dosage de carburant d'un moteur a combustion interne
EP0780559A2 (fr) * 1995-12-22 1997-06-25 Robert Bosch Gmbh Méthode et dispositif pour commander un moteur à combustion interne
EP0780559A3 (fr) * 1995-12-22 1998-03-11 Robert Bosch Gmbh Méthode et dispositif pour commander un moteur à combustion interne
FR2744765A1 (fr) * 1996-02-08 1997-08-14 Bosch Gmbh Robert Procede et dispositif de commande d'un moteur a combustion interne
DE19613184A1 (de) * 1996-04-02 1997-10-16 Daimler Benz Ag Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage
DE19613184C2 (de) * 1996-04-02 1998-01-22 Daimler Benz Ag Verfahren zum Erkennen von Betriebsstörungen in einer Kraftstoffeinspritzanlage
GB2311817B (en) * 1996-04-02 1998-02-25 Daimler Benz Ag Method for detecting operational faults in a fuel injection system
US5727516A (en) * 1996-04-02 1998-03-17 Mercedes - Benz Ag Method of controlling an internal combustion engine upon detection of a fault inn a fuel injection system
GB2311817A (en) * 1996-04-02 1997-10-08 Daimler Benz Ag Method of detecting operational faults in a common-rail fuel injector system for i.c. engines
WO1997049909A1 (fr) * 1996-06-26 1997-12-31 Robert Bosch Gmbh Procede d'utilisation d'un systeme d'injection de carburant
US6055961A (en) * 1996-08-29 2000-05-02 Siemens Aktiengesellschaft Method for monitoring a fuel pressure
FR2752881A1 (fr) * 1996-08-29 1998-03-06 Siemens Ag Procede de surveillance d'une pression de carburant
EP0857867A1 (fr) * 1997-02-03 1998-08-12 Robert Bosch Gmbh Méthode et dispositif de détection de fuite
EP0886056A1 (fr) * 1997-06-20 1998-12-23 Robert Bosch Gmbh Méthode et dispositif pour la surveillance d'un système d'alimentation en carburant
EP0976921A3 (fr) * 1998-07-31 2001-03-07 Robert Bosch Gmbh Méthode et dispositif de surveillance d'un système d'alimentation en carburant
FR2797468A1 (fr) * 1999-08-11 2001-02-16 Bosch Gmbh Robert Procede et dispositif de commande d'une installation d'injection de moteur a combustion interne
WO2002001058A1 (fr) * 2000-06-26 2002-01-03 Siemens Aktiengesellschaft Systeme d'injection pour moteur a combustion interne et procede de fonctionnement d'un systeme d'injection
EP1205657A3 (fr) * 2000-11-14 2003-08-13 C.R.F. Società Consortile per Azioni Méthode de diagnostic de fuite dans un système d'injection à rampe commune de moteur à combustion interne
FR2830050A1 (fr) * 2001-09-21 2003-03-28 Bosch Gmbh Robert Procede et dispositif de diagnostic d'un amortisseur de pression dans un systeme de dosage de carburant d'un moteur a combustion interne
US7121265B2 (en) 2001-09-25 2006-10-17 Robert Bosch Gmbh Method for operating a fuel supply system for an internal combustion engine in a motor vehicle
WO2003027472A1 (fr) * 2001-09-25 2003-04-03 Robert Bosch Gmbh Procede d'exploitation d'un systeme d'alimentation en carburant de moteur a combustion interne d'automobile
EP1310655A2 (fr) * 2001-11-07 2003-05-14 Denso Corporation Système d'injection de carburant
EP1310655A3 (fr) * 2001-11-07 2006-10-25 Denso Corporation Système d'injection de carburant
WO2004057172A1 (fr) * 2002-12-19 2004-07-08 Siemens Aktiengesellschaft Dispositif et procede pour la reconnaissance de defauts dans un systeme d'injection de carburant
US7137294B2 (en) 2002-12-19 2006-11-21 Siemens Aktiengesellschaft Device and method for identifying defects in a fuel injection system
US8176726B2 (en) 2004-05-05 2012-05-15 Robert Bosch Gmbh Method for introducing a reagent medium into an exhaust gas conduit of an internal combustion engine, and apparatus for carrying out the method
WO2006040617A1 (fr) * 2004-10-12 2006-04-20 Ford Otomativ Sanayi Anonim Sirketi Procede et appareil de surveillance de l'injection de carburant
WO2007097226A1 (fr) * 2006-02-21 2007-08-30 Aisan Kogyo Kabushiki Kaisha Système de diagnostic de panne dans un dispositif de commande de charge et système de commande de pompe à carburant
US8195355B2 (en) 2006-02-21 2012-06-05 Aisan Kogyo Kabushiki Kaisha Fault diagnosis system in load driving arrangement and fuel pump control system
WO2009141199A1 (fr) * 2008-05-23 2009-11-26 Continental Automotive Gmbh Procédé de détection d'un mauvais fonctionnement, notamment d'un écart de capteur de pression de rampe dans un système d'injection à rampe commune
CN102037229A (zh) * 2008-05-23 2011-04-27 欧陆汽车有限责任公司 用于在共轨喷射系统中识别故障及尤其轨压传感器的漂移的方法
US8725391B2 (en) 2008-05-23 2014-05-13 Continental Automotive Gmbh Method for identifying an error function and in particular a drift of a rail pressure sensor in a common rail injection system

Also Published As

Publication number Publication date
DE69409222D1 (de) 1998-04-30
JP3727339B2 (ja) 2005-12-14
ITTO930646A0 (it) 1993-09-03
EP0668966A1 (fr) 1995-08-30
DE69409222T2 (de) 1998-07-16
EP0668966B1 (fr) 1998-03-25
JPH08503053A (ja) 1996-04-02
ITTO930646A1 (it) 1995-03-03
IT1261575B (it) 1996-05-23

Similar Documents

Publication Publication Date Title
EP0668966B1 (fr) Methode de diagnostic de defaillances d'un circuit a haute pression d'un systeme d'injection a haute pression d'un moteur a combustion interne
KR100413305B1 (ko) 내연기관의연료량조정장치의감시방법및감시장치
US5715786A (en) Device for detecting leakage in a fuel supply
US5773716A (en) Method and unit for diagnosing leakage of an internal combustion engine high-pressure injection system
EP2188517B1 (fr) Injecteur de carburant et système d'injection de carburant
US8333109B2 (en) Method and device for diagnosing an injection valve, connected to a fuel rail, of an internal combustion engine
US7899603B2 (en) Fuel injection controller
US10526994B2 (en) Methods and system for diagnosing a high-pressure fuel pump in a fuel system
US5816220A (en) Process and device for monitoring a fuel delivery system
CN102428264B (zh) 燃料喷射系统中的故障定位
US20110016959A1 (en) Method and device for controlling a fuel metering system
US11506165B2 (en) Method for ascertaining a variable characterizing a flow rate of a fuel injector
JP2000054903A (ja) 燃料調量システムの監視方法および装置
US9284904B2 (en) Method and device for monitoring a high-pressure fuel system
US4761608A (en) In use position measuring device calibration
US7171952B2 (en) Method, computer program, control and/or regulation device for operation of an internal combustion engine and fuel system for an internal combustion engine
EP0668965B1 (fr) Regulateur du systeme d'injection de carburant a haute pression d'un moteur a combustion interne
CN101466934B (zh) 用于检查燃油喷射系统部件的功能的方法
WO2021252109A1 (fr) Systèmes et procédés de détection et de compensation de dérive d'avance à l'injection de carburant et procédés de détection et de compensation de dérive d'avance à l'injection de carburant
GB2325275A (en) A device for measuring the quantity of fuel supplied to a fuel injection valve of an internal combustion engine
CN114981531B (zh) 用于测量在共轨燃料系统中的多脉冲燃料喷射事件期间的燃料量的方法
US11293370B1 (en) Method and system for valve position monitoring
WO2017129394A1 (fr) Dispositif et procédé permettant de déterminer une pression de carburant au niveau d'un injecteur de carburant
CN108798928B (zh) 共轨式燃料喷射系统中燃料供应的控制方法
CN113494404A (zh) 用于检测喷油器的电磁阀的阀座磨损的方法控制装置和可读存储介质

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CN JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

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

WWE Wipo information: entry into national phase

Ref document number: 1994927543

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1994927543

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1994927543

Country of ref document: EP