EP2029875A1 - Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant - Google Patents

Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant

Info

Publication number
EP2029875A1
EP2029875A1 EP07728787A EP07728787A EP2029875A1 EP 2029875 A1 EP2029875 A1 EP 2029875A1 EP 07728787 A EP07728787 A EP 07728787A EP 07728787 A EP07728787 A EP 07728787A EP 2029875 A1 EP2029875 A1 EP 2029875A1
Authority
EP
European Patent Office
Prior art keywords
values
injection system
fuel injection
pressure
component
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
EP07728787A
Other languages
German (de)
English (en)
Other versions
EP2029875B1 (fr
Inventor
Thomas Dingler
Stefan Keller
Johannes Zeidler
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 EP2029875A1 publication Critical patent/EP2029875A1/fr
Application granted granted Critical
Publication of EP2029875B1 publication Critical patent/EP2029875B1/fr
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a method, a computer program and a device for checking a component of a fuel injection system contained in a motor vehicle according to the preambles of the independent claims.
  • Modern internal combustion engines are provided with a common rail fuel injection system, with which fuel is supplied by means of a pump in a common rail (pressure accumulator) and pressurized. The fuel is then injected from the common rail via controllable injectors into the combustion chambers of the internal combustion engine.
  • the common rail is provided with a rail pressure sensor with which the pressure in the common rail is measured, wherein a pressure valve and / or the pump of the fuel injection system is controlled and / or regulated in dependence on the measured pressure.
  • the above-mentioned requirements, which are made on the internal combustion engine can not be met in an inaccurate measurement of the pressure, which may be caused by a drift or defect of the rail pressure sensor, or by a malfunctioning of the other components of the fuel injection system. Therefore, for the reasons mentioned above, it is necessary to perform an accurate, non-time consuming and reliable inspection of the components of a fuel injection system contained in a motor vehicle in order to eliminate any changes and errors.
  • the injectors of the injection system are supplied with drive signals which control the fuel metering.
  • further plausibility checks of the measured values of the rail pressure sensor can be carried out over the activation duration of the injectors.
  • this is only possible in service.
  • An object of the present invention is therefore to provide a method, a computer program and a device for checking the function of at least one component of a fuel injection system contained in a vehicle, by which an identification of the component causing the error is made possible with an increased reliability of the test.
  • This problem is solved by a method for checking a component of a fuel injection system contained in a vehicle, wherein the check is carried out during operation of an internal combustion engine, and in the case of deviations from the values permissible for the component to be tested, activates a further test in a further method step is used to confirm and / or narrow down the error.
  • This solution according to the invention ensures that the testing of the component of a fuel injection system can be carried out continuously and not only when the engine is stopped or in service.
  • the method according to the invention in which two tests are carried out in succession, if the first test has an abnormality, it is further ensured that an error memory entry is only set if an error from both the first and the subsequent second Verification detected and thus confirmed.
  • a preferred embodiment of the method according to the invention provides as a first method step the determination of an amount of fuel injected into a combustion chamber of the internal combustion engine.
  • the determination may be made by direct or indirect measurement, e.g. via the opening time of an injection valve of the injector, the energization time of a piezoelectric actuator of the injector, the rail pressure or the like take place.
  • it is automatically switched, for example by a control unit, to a pressure regulation via a pressure regulating valve or a pump, whereby if the output values of the pressure regulating valve or the pump deviate from the values given values to one
  • a further preferred embodiment of the method according to the invention provides, as a first method step, for the determination and checking of a control duration of injectors contained in the fuel injection system, via which the fuel metering is controlled.
  • this is automatically canceled, e.g. switched by the controller to pressure control via a pressure control valve or a pump, wherein in case of a deviation of the output values of the pressure regulating valve or the pump of the predetermined values automatically e.g. is detected by the control unit to a malfunction of one of the rail pressure sensors.
  • the inventive method is performed constantly idling the internal combustion engine.
  • the problem mentioned at the outset is also solved by a device for checking a component of a fuel injection system contained in a vehicle, wherein the check can be carried out in the operating state of an internal combustion engine, and if deviations from the values permissible for the component to be tested, a further test in a further method step is activated to confirm the error and / or limit.
  • the input mentioned problem is further solved by a computer program with program code for carrying out the method according to the invention, when the program is executed in a computer.
  • Fig. 1 is a schematic diagram of a common rail fuel injection system
  • FIG. 2 shows a flow chart of the method according to the invention for checking a rail pressure sensor of a fuel injection system.
  • FIG. 1 is a sketch of a schematic representation of a common rail
  • the injection system has a reservoir, which is also referred to as rail 110, injectors 111, a controller 100 and a rail pressure sensor 112.
  • the rail 110 is in contact with the injector 111.
  • the rail is connected via a high-pressure line 122 to a high-pressure pump 123, which in turn is connected to a prefeed pump 124 for conveying the fuel via a filter 125 from the tank.
  • the high-pressure line 122 is also in contact via a pressure regulating valve 120 with a return line 121.
  • the high-pressure pump 123 conveys the fuel under high pressure via the high-pressure line 122 into the rail 110, which stores the high-pressure fuel.
  • the pressure regulating valve 120 is connected to a coil 115, wherein depending on the current I, which flows through the coil 115 and / or voltage applied to the coil, the pressure value is set at which the pressure regulating valve 120 releases the connection to the return line 121.
  • the coil 115 is connected via switching means 102 with a pressure control 101, which controls the switching means 102 and with output signals of a current measuring means 103 aufschlagt.
  • the pressure can also be controlled and / or regulated by influencing the high-pressure pump 123.
  • the fuel pressure in the rail 110 is detected by the rail pressure sensor 112 and supplied to the controller 100.
  • the Rail pressure sensor 112 In response to a pressure signal P, the Rail pressure sensor 112 provides, as well as the output signals from other sensors 102, the controller 100, the injector 111 with drive signals that control the fuel metering. The injector 111 then injects the fuel stored in the rail 110.
  • FIG. 2 shows one of the possible embodiments of the method according to the invention.
  • This flowchart shows a method of checking a rail pressure sensor RDS. The test is performed in steady state operation of the engine - step 101 - with the engine idling. When the engine is in the
  • the injection quantity is checked in a next step 102 and an actual value q q determined .
  • a further step 103 it is checked whether the determined actual injection quantity q is in a predetermined range, ie whether it corresponds to a desired injection quantity q ED c.
  • an engine-specific permissible bandwidth is determined, which is corrected by the generator load.
  • the potential cause of this difference may be a metering problem caused by a faulty injector or by a faulty rail pressure sensor.
  • another cause can also be a wrong implementation of the injected fuel quantity, in the event that the increased torque is caused by the engine mechanics.
  • pressure control valve step 104.
  • step 106 If the output of the pressure regulator is within the permissible range, in a step 106 all control modes are released. However, should the output of the pressure regulator, eg setpoint current or duty cycle, move within an impermissible range, there is an error in the rail pressure sensor (step 107). It is particularly advantageous that a
  • Rail pressure sensor with too large a gauge which indicates a too small pressure in the rail, leads to an increased (idling) injection quantity and at the same time to a smaller regulator output, since a smaller current is necessary for the smaller rail pressure. If the gauge pressure sensor is too small, the same applies in the reverse direction. The signals to be tested thus behave in opposite directions. Thus, the inspection of the rail pressure sensor can be performed reliably. Similarly, a check of an injector may be performed. It is also conceivable for systems without pressure control valve to combine the method with the controller output of the metering unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un procédé, un programme informatique et un dispositif pour le contrôle d'un composant contenu dans un véhicule d'un système d'injection de carburant, le contrôle étant effectué à l'état de fonctionnement d'un moteur à combustion. En cas de divergences de valeurs autorisées pour les composants à tester, un autre contrôle est activé dans une autre étape de procédé pour valider et/ou délimiter est le défaut.
EP07728787.8A 2006-06-08 2007-05-04 Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant Ceased EP2029875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006026639A DE102006026639A1 (de) 2006-06-08 2006-06-08 Verfahren zur Überprüfung der Funktion einer Komponente eines Kraftstoffeinspritzsystems
PCT/EP2007/054334 WO2007141097A1 (fr) 2006-06-08 2007-05-04 Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2029875A1 true EP2029875A1 (fr) 2009-03-04
EP2029875B1 EP2029875B1 (fr) 2018-11-07

Family

ID=38293340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728787.8A Ceased EP2029875B1 (fr) 2006-06-08 2007-05-04 Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant

Country Status (6)

Country Link
EP (1) EP2029875B1 (fr)
JP (1) JP2009540178A (fr)
KR (1) KR20090006874A (fr)
CN (1) CN101466934B (fr)
DE (1) DE102006026639A1 (fr)
WO (1) WO2007141097A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009018654B3 (de) 2009-04-23 2011-01-05 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
JP5387538B2 (ja) 2010-10-18 2014-01-15 株式会社デンソー 筒内噴射式内燃機関のフェールセーフ制御装置
CN111140390B (zh) * 2018-11-06 2022-12-23 长城汽车股份有限公司 车辆燃油系统的控制方法及装置
DE102019220121A1 (de) * 2019-12-19 2021-06-24 Robert Bosch Gmbh Verfahren und Vorrichtung zum Überprüfen der Funktionsfähigkeit einer Erdgas-Brennkraftmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757655C2 (de) * 1997-12-23 2002-09-26 Siemens Ag Verfahren und Vorrichtung zur Funktionsüberwachung eines Drucksensors
DE19908352A1 (de) * 1999-02-26 2000-08-31 Bosch Gmbh Robert Kraftstoffeinspritzverfahren für eine Brennkraftmaschine
DE10155252B4 (de) * 2001-11-09 2004-01-08 Siemens Ag Verfahren zur Überprüfung der Plausibilität eines von einem Drucksensor gelieferten Kraftstoffdruckwertes in eine Einspritzanlage für Brennkraftmaschinen und entsprechende Einspritzanlage
DE10348610B4 (de) * 2003-10-20 2009-07-09 Continental Automotive Gmbh Verfahren und Vorrichtung zum Überwachen eines Kraftstoffdrucksensors
CN100343502C (zh) * 2005-07-25 2007-10-17 无锡油泵油嘴研究所 共轨燃油喷射系统喷油器故障诊断方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007141097A1 *

Also Published As

Publication number Publication date
WO2007141097A1 (fr) 2007-12-13
KR20090006874A (ko) 2009-01-15
DE102006026639A1 (de) 2007-12-13
CN101466934A (zh) 2009-06-24
EP2029875B1 (fr) 2018-11-07
JP2009540178A (ja) 2009-11-19
CN101466934B (zh) 2012-11-07

Similar Documents

Publication Publication Date Title
EP1157201A1 (fr) Systeme pour faire fonctionner un moteur a combustion interne, notamment d'un vehicule automobile
DE102010013602B4 (de) Verfahren zur Erkennung eines Fehlverhaltens eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors
EP0976921B1 (fr) Méthode et dispositif de surveillance d'un système d'alimentation en carburant
DE102008044050A1 (de) Verfahren zum Betreiben eines Kraftstoffsystems
WO2004057172A1 (fr) Dispositif et procede pour la reconnaissance de defauts dans un systeme d'injection de carburant
EP1711704B1 (fr) Procede pour surveiller le bon fonctionnement d'un systeme d'injection de carburant
DE102007032509A1 (de) Verfahren zum Betreiben eines Kraftstoffeinspritzsystems, insbesondere einer Brennkraftmaschine
DE102010027675B4 (de) Verfahren zur Erkennung fehlerhafter Komponenten oder fehlerhafter Teilsysteme eines elektronisch geregelten Kraftstoffeinspritzsystems eines Verbrennungsmotors durch Evaluierung des Druckverhaltens
EP2029875B1 (fr) Procédé pour le contrôle de la fonction d'un composant d'un système d'injection de carburant
DE102008024545A1 (de) Verfahren und Vorrichtung zur Diagnose eines Fehlers, insbesondere in einem Niederdruckbereich eines Kraftstoff-Einspritzsystems eines Verbrennungsmotors
DE102011005527A1 (de) Verfahren zur Prüfung der Kraftstoffmengenbilanz in einem Common Rail System, entsprechende Motorsteuerung sowie entsprechendes Diagnosegerät
DE112008000659B4 (de) Verfahren für die Diagnose eines Verbrennungsmotors
DE10309720A1 (de) Verfahren und Vorrichtung zur mengendriftkompensierenden Steuerung von Injektoren eines Kraftstoffzumesssystems einer Brennkraftmaschine
DE102016214760B4 (de) Verfahren zum Betrieb einer Brennkraftmaschine, Einrichtung zum Steuern und/oder Regeln einer Brennkraftmaschine, Einspritzsystem und Brennkraftmaschine
DE102019210340B3 (de) Verfahren und Vorrichtung zur Vermeidung von Überdruck in einem Kraftstoff-Hochdruckeinspritzsystem eines Kraftfahrzeugs
DE19957732B4 (de) Verfahren zur Überprüfung einer betriebssicherheitsrelevanten Komponente einer Anlage
EP2044317A1 (fr) Procédé de détermination d'une erreur dans une unité de dosage de carburant d'un système d'injection
DE102014208874A1 (de) Verfahren zur Bestimmung einer mittels eines Injektors in einen Zylinder eines Verbrennungsmotors eines Kraftfahrzeugs eingespritzten Kraftstoffmenge
DE102016200991A1 (de) Verfahren zur Fehlerdiagnose für den Drucksensor und Common-Rail-Kraftstoffeinspritzsteuergerät
DE102007003150A1 (de) Verfahren zur Ermittlung eines unkontrollierten Beschleunigens einer Brennkraftmaschine
EP1698777B1 (fr) Procédé pour faire fonctionner un injecteur pour moteur à combustion interne
DE10317654B4 (de) Verfahren und Vorrichtung zur driftkompensierenden Steuerung von Injektoren eines Kraftstoffzumesssystems einer Brennkraftmaschine
DE102022209727B4 (de) Verfahren zum Betreiben eines Kraftstoff-Einspritzsystems eines Verbrennungsmotors
DE10145194C1 (de) Prüfverfahren für einen Drucksensor einer Einspritzanlage
DE102013210909A1 (de) Verfahren zur Plausibilisierung eines Raildrucksensors

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: 20090108

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17Q First examination report despatched

Effective date: 20090403

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: F02D 41/22 20060101ALI20180615BHEP

Ipc: F02D 41/38 20060101ALI20180615BHEP

Ipc: F02D 41/14 20060101AFI20180615BHEP

INTG Intention to grant announced

Effective date: 20180716

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 ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007016479

Country of ref document: DE

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181107

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181107

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007016479

Country of ref document: DE

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: 20190808

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190504

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

Ref country code: GB

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

Effective date: 20190504

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: 20190531

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

Ref country code: DE

Payment date: 20220725

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007016479

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: 20231201