FR3084113B1 - METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE - Google Patents

METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE Download PDF

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Publication number
FR3084113B1
FR3084113B1 FR1856701A FR1856701A FR3084113B1 FR 3084113 B1 FR3084113 B1 FR 3084113B1 FR 1856701 A FR1856701 A FR 1856701A FR 1856701 A FR1856701 A FR 1856701A FR 3084113 B1 FR3084113 B1 FR 3084113B1
Authority
FR
France
Prior art keywords
fuel
determined
determining
pressure
rail
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.)
Active
Application number
FR1856701A
Other languages
French (fr)
Other versions
FR3084113A1 (en
Inventor
Yves AGNUS
Nicolas Girard
George Weaver
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive GmbH
Continental Automotive France SAS
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 Continental Automotive GmbH, Continental Automotive France SAS filed Critical Continental Automotive GmbH
Priority to FR1856701A priority Critical patent/FR3084113B1/en
Priority to PCT/EP2019/069332 priority patent/WO2020016341A1/en
Publication of FR3084113A1 publication Critical patent/FR3084113A1/en
Application granted granted Critical
Publication of FR3084113B1 publication Critical patent/FR3084113B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/22Safety or indicating devices for abnormal conditions
    • F02D41/222Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/30Controlling fuel injection
    • F02D41/38Controlling fuel injection of the high pressure type
    • F02D41/3809Common rail control systems
    • F02D41/3836Controlling the fuel pressure
    • F02D41/3845Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/22Safety or indicating devices for abnormal conditions
    • F02D41/222Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
    • F02D2041/223Diagnosis of fuel pressure sensors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/02Input parameters for engine control the parameters being related to the engine
    • F02D2200/06Fuel or fuel supply system parameters
    • F02D2200/0602Fuel pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/02Input parameters for engine control the parameters being related to the engine
    • F02D2200/06Fuel or fuel supply system parameters
    • F02D2200/0602Fuel pressure
    • F02D2200/0604Estimation of fuel pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2250/00Engine control related to specific problems or objectives
    • F02D2250/14Timing of measurement, e.g. synchronisation of measurements to the engine cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/04Introducing corrections for particular operating conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012Valves
    • F02M63/0031Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/005Pressure relief valves
    • F02M63/0052Pressure relief valves with means for adjusting the opening pressure, e.g. electrically controlled

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (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

Procédé de détermination de la pression du carburant dans un rail commun d'injection d'un moteur à combustion interne alimenté en carburant par une pompe comprenant une soupape d'admission digitale et un piston entraîné par une came excentrique, le rail étant muni d'un moyen de détermination de la pression du carburant dans le rail commun, comprenant les étapes suivantes : • lorsque le moteur du véhicule est en fonction et qu'aucune injection de carburant n'est en cours, • on détermine la position angulaire de la came excentrique correspondant à l'instant auquel commander la fermeture de la soupape d'admission digitale pour obtenir un ratio de commande de la pompe à carburant égal à la variable prédéfinie, • on commande la fermeture de la soupape lorsque la position angulaire déterminée de la came excentrique est atteinte, et on détermine si une variation de pression a lieu par l'intermédiaire du moyen de détermination de la pression du carburant dans le rail commun, • si une telle variation n'est pas déterminée, la variable est incrémentée d'une deuxième valeur prédéfinie, et le procédé reprend à la détermination de la position angulaire, • si une telle variation est déterminée, on détermine le volume de carburant comprimé puis on détermine la pression effective à laquelle la pompe a comprimé le carburant admis dans le rail commun en fonction de la compressibilité du carburant.Method for determining the fuel pressure in a common injection rail of an internal combustion engine supplied with fuel by a pump comprising a digital intake valve and a piston driven by an eccentric cam, the rail being provided with means for determining the fuel pressure in the common rail, comprising the following steps: • when the vehicle engine is running and no fuel injection is in progress, • the angular position of the cam is determined eccentric corresponding to the instant at which to close the digital intake valve to obtain a fuel pump control ratio equal to the predefined variable, • the valve is closed when the determined angular position of the cam eccentric is reached, and it is determined whether a pressure variation takes place via the means for determining the fuel pressure in the common rail, • if such a var iation is not determined, the variable is incremented by a second predefined value, and the process resumes at the determination of the angular position, • if such a variation is determined, the volume of compressed fuel is determined then the pressure is determined effective at which the pump compressed the fuel admitted into the common rail as a function of the compressibility of the fuel.

FR1856701A 2018-07-19 2018-07-19 METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE Active FR3084113B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1856701A FR3084113B1 (en) 2018-07-19 2018-07-19 METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE
PCT/EP2019/069332 WO2020016341A1 (en) 2018-07-19 2019-07-18 Method for determining fuel pressure in a common-rail injection rail of an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1856701 2018-07-19
FR1856701A FR3084113B1 (en) 2018-07-19 2018-07-19 METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE

Publications (2)

Publication Number Publication Date
FR3084113A1 FR3084113A1 (en) 2020-01-24
FR3084113B1 true FR3084113B1 (en) 2020-06-19

Family

ID=63491777

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1856701A Active FR3084113B1 (en) 2018-07-19 2018-07-19 METHOD FOR DETERMINING THE FUEL PRESSURE IN A COMMON INJECTION RAIL OF AN INTERNAL COMBUSTION ENGINE

Country Status (2)

Country Link
FR (1) FR3084113B1 (en)
WO (1) WO2020016341A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8375922B2 (en) * 2009-04-15 2013-02-19 GM Global Technology Operations LLC Control of fuel pump by quantifying performance
US8220322B2 (en) * 2009-04-30 2012-07-17 GM Global Technology Operations LLC Fuel pressure sensor performance diagnostic systems and methods based on hydrostatics in a fuel system
JP2014084754A (en) 2012-10-22 2014-05-12 Bosch Corp Rail pressure sensor output characteristic diagnostic method, and common rail-type fuel injection control device
DE102013201576A1 (en) * 2013-01-31 2014-07-31 Robert Bosch Gmbh Method for checking the plausibility of a rail pressure sensor value
DE102016214007A1 (en) * 2016-07-29 2018-02-01 Robert Bosch Gmbh Method for determining a pressure in a high-pressure accumulator of an internal combustion engine

Also Published As

Publication number Publication date
FR3084113A1 (en) 2020-01-24
WO2020016341A1 (en) 2020-01-23

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