EP1167731A2 - Méthode pour surveiller le fonctionnement de pompes pour véhicules ayant au moins deux pompes électriques à carburant - Google Patents

Méthode pour surveiller le fonctionnement de pompes pour véhicules ayant au moins deux pompes électriques à carburant Download PDF

Info

Publication number
EP1167731A2
EP1167731A2 EP01110524A EP01110524A EP1167731A2 EP 1167731 A2 EP1167731 A2 EP 1167731A2 EP 01110524 A EP01110524 A EP 01110524A EP 01110524 A EP01110524 A EP 01110524A EP 1167731 A2 EP1167731 A2 EP 1167731A2
Authority
EP
European Patent Office
Prior art keywords
fuel
lambda
pumps
combustion engine
internal combustion
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
EP01110524A
Other languages
German (de)
English (en)
Other versions
EP1167731B1 (fr
EP1167731A3 (fr
Inventor
Klaus Joos
Klaus Kroepke
Gerd Grass
Ruediger Weiss
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 EP1167731A2 publication Critical patent/EP1167731A2/fr
Publication of EP1167731A3 publication Critical patent/EP1167731A3/fr
Application granted granted Critical
Publication of EP1167731B1 publication Critical patent/EP1167731B1/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
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel pumps
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps

Definitions

  • the invention is based on a method for recognizing the Pump function in motor vehicles with at least two electric fuel pumps according to the genus of Main claim. Often used in motor vehicles especially with a high fuel requirement two or more electric fuel pumps used to suit everyone Load torque required amount of fuel To be able to supply internal combustion engine. If one of the falls Fuel pumps, then usually the Internal combustion engine can still be operated in the partial load range, but not at full load. Is still from Combustion engine demands full load, then it can be considered Under a failed fuel pump to one Pressure drop in the fuel supply come. this has consequence that the internal combustion engine with a lean Mixture runs as intended by the setpoint.
  • the inventive method for the detection of Pump function in vehicles with at least two electric fuel pumps with the distinctive Features of the main claim has the advantage over this that without much additional effort by simply switching the Fuel pumps and watching them at the same time Flow detected a faulty fuel pump can be. It is considered particularly advantageous that thereby measures can be taken that are expensive Consequential damage to the internal combustion engine and its aggregates avoid in time.
  • the delivery rate of the active fuel pump from the signal of the Derive lambda control. Because when reducing the Delivery rate of the fuel, i.e. in the event of a defect
  • the control unit operates the fuel pump by means of the lambda control an extension of the injection time to that required air / fuel mixture (lambda ratio) adjust. This can be easily determined whether a fuel pump is its intended Pumping performance brings or under-fueling because it is faulty.
  • the delivery rate is also considered cheap a balance sheet from that supplied to the internal combustion engine
  • Amount of fuel or that taken from the internal combustion engine Determine fuel quantity. This is by simple means possible, for example, using a model calculation in which the amount of fuel supplied to the fuel pump system, Pressure regulator and suction jet pump is determined and with the amount of fuel taken from the internal combustion engine from the Injection time, speed and measured lambda value compared.
  • a warning signal is advantageously output and / or the power of the internal combustion engine is limited, to avert damage from overheating.
  • a lambda value that deviates from the target value can be advantageous as a possible cause of a malfunction Fuel pump can be viewed.
  • Other features that also use the lambda signal as an input variable, can then be switched off. This also prevents that the other functions incorrectly fail diagnose.
  • Figure 1 shows a block diagram
  • Figure 2 shows a flowchart
  • FIG. 1 shows a block diagram of a fuel delivery system in a schematic representation.
  • the solid lines 6, 7 and 8 are said to Fuel lines and the dashed lines represent electrical connections.
  • FIG. 1 is with a tank 3 via suction lines 8 two electrically operated fuel pumps 1,2 connected. On the output side, they convey via pressure lines 7 individual fuel injectors 5 the required fuel.
  • a mixing valve 4 is preferably interposed, via that two pressure lines 7 are brought together. Not the electrical control of the is shown Injectors 5 by a corresponding control unit 9 can be controlled.
  • the fuel pumps 1, 2 can identical or with different performances be trained.
  • the fuel pumps are dashed over the Lines 11 shown by a control unit 9 both with Energy supplied as well as controlled and generated in the High pressure line 7 a predetermined pressure when in Are okay.
  • the control unit 9 also contains one Evaluation stage 10, with which the pump function on their proper function is monitored. An error occurs this error is preferably visual to the driver and / or acoustically reported and in a corresponding Fault memory stored, which also for other functions can be provided.
  • the control device 9 Inputs for sensors or signals based on the Evaluation of the pump function are necessary. For example is a pressure signal P, the lambda signal L and / or Flow rate Q can be entered via these inputs.
  • the corresponding sensors are usually in the vehicle already exists, so that their signals from control unit 9 can also be used.
  • the control unit 9 determines the fuel quantity to be delivered due to the operating parameters currently received z. B. P, L, Q by determining the line pressure in the High pressure line 7 and the specification of the injection duration for the injection valves 5. For example, at full load "Bold" pilot controlled, which with a lambda setpoint ⁇ 1 is set. However, it has been found that at pressure drop, d. H. if the delivery rate of the Fuel pumps is too low, the lambda setpoint ⁇ 1 at Full load cannot be set. In particular, could previously with a two-point control lambda at full load cannot be measured satisfactorily. Because with the two-point controller the internal combustion engine can become leaner can be recognized when lambda exceeds the threshold value, 1 ' exceeds.
  • the basic consideration of the invention is a defective fuel pump 1.2 (EKP) both in Partial operation as well as at full load.
  • EKP defective fuel pump 1.2
  • Both fuel pumps are operated at partial load reciprocal operation with each other in their conveying capacity compared.
  • Do the fuel pumps 1,2 the same Conveying capacity, this results in mutual operation no significant difference in the output.
  • This is easiest to do when the fuel pumps checked at an operating point of the internal combustion engine be where the required flow rate from only one pump can be applied to meet fuel requirements Internal combustion engine in every case and error-free sure.
  • the control output can be used for the comparison Lambda control are used and the two lambda Signals are compared.
  • the Fuel pumps an at least approximately the same Conveyed capacity recognized, then it can also be concluded from it that errors of the lambda probe or the load detection are to be excluded.
  • the fuel pumps at different lambda values with alternating operation of the Fuel pumps at the same engine operating point be excluded that it is an error detection as a result of other errors, for example with the lambda sensor itself or load detection related.
  • the delivery rate of the individual fuel pumps 1,2 by determining the supply to the internal combustion engine Amount of fuel and that taken from the internal combustion engine To calculate fuel quantity. This procedure is especially for pumps with different delivery rates advantageous because here (except in the event of a total failure of one Fuel pump the comparison is not the same Operating point can be carried out. For example influences of the fuel system should also be taken into account become.
  • the program also comes to this step if in Item 23 the fuel requirement was less than that Delivery rate of a fuel pump is. In this case the program jumps to position 27 and checks whether the Fuel requirement of the delivery rate of a fuel pump equivalent. If this is not the case, position 23 jumps back.

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)
  • Fuel-Injection Apparatus (AREA)
EP01110524A 2000-06-20 2001-04-28 Méthode pour surveiller le fonctionnement de pompes pour véhicules ayant au moins deux pompes électriques à carburant Expired - Lifetime EP1167731B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10030247A DE10030247A1 (de) 2000-06-20 2000-06-20 Verfahren zur Erkennung der Pumpenfunktion bei Fahrzeugen mit wenigstens zwei elektrischen Kraftstoffpumpen
DE10030247 2000-06-20

Publications (3)

Publication Number Publication Date
EP1167731A2 true EP1167731A2 (fr) 2002-01-02
EP1167731A3 EP1167731A3 (fr) 2002-10-30
EP1167731B1 EP1167731B1 (fr) 2004-12-08

Family

ID=7646309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110524A Expired - Lifetime EP1167731B1 (fr) 2000-06-20 2001-04-28 Méthode pour surveiller le fonctionnement de pompes pour véhicules ayant au moins deux pompes électriques à carburant

Country Status (2)

Country Link
EP (1) EP1167731B1 (fr)
DE (2) DE10030247A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085603A1 (fr) 2008-01-31 2009-08-05 Caterpillar Motoren GmbH & Co. KG Système et procédé pour éviter la surchauffe de pompe CR
WO2016173986A1 (fr) * 2015-04-27 2016-11-03 Continental Automotive Gmbh Procédé de régulation d'un système d'alimentation en carburant

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10319397B4 (de) * 2003-04-30 2006-06-29 Dr.Ing.H.C. F. Porsche Ag Verfahren zur Überwachung eines Kraftstoffsystems für Brennkraftmaschinen mit mehreren Kraftstofffördereinheiten
CN113503216A (zh) * 2021-08-25 2021-10-15 一汽解放汽车有限公司 一种柴油机燃油供给系统及其测试方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247915A1 (de) * 1982-12-24 1984-07-12 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffoerderanlage fuer brennkraftmaschinen, insbesondere in kraftfahrzeugen
DE3520660A1 (de) * 1985-06-08 1986-12-11 Bosch Gmbh Robert Verfahren und vorrichtung zum sicheren betrieb einer brennkraftmaschine
JPH0374564A (ja) * 1989-08-11 1991-03-29 Japan Electron Control Syst Co Ltd 燃料ポンプ制御装置
US5623907A (en) * 1995-06-09 1997-04-29 Walbro Corporation Liquid propane fuel delivery system
DE10002112C2 (de) * 2000-01-19 2002-04-11 Bosch Gmbh Robert Verfahren zur Diagnose eines Kraftstoffversorgungssystems für Brennkraftmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085603A1 (fr) 2008-01-31 2009-08-05 Caterpillar Motoren GmbH & Co. KG Système et procédé pour éviter la surchauffe de pompe CR
WO2016173986A1 (fr) * 2015-04-27 2016-11-03 Continental Automotive Gmbh Procédé de régulation d'un système d'alimentation en carburant
KR20170137873A (ko) * 2015-04-27 2017-12-13 콘티넨탈 오토모티브 게엠베하 연료 전달 시스템을 피드백 제어하는 방법
US10247126B2 (en) 2015-04-27 2019-04-02 Continental Automotive Gmbh Feedback control method for a fuel delivery system

Also Published As

Publication number Publication date
EP1167731B1 (fr) 2004-12-08
DE50104742D1 (de) 2005-01-13
EP1167731A3 (fr) 2002-10-30
DE10030247A1 (de) 2002-01-03

Similar Documents

Publication Publication Date Title
DE19941329B4 (de) Steueranordnung für eine Brennkraftmaschine mit einer Fehlfunktionserfassungsfunktion
EP1745197B1 (fr) Procede pour introduire une substance reactive dans un conduit de gaz d'echappement d'un moteur a combustion interne
EP1157201B1 (fr) Systeme pour faire fonctionner un moteur a combustion interne, notamment d'un vehicule automobile
DE102012113108B4 (de) Fahrzeug mit einem system und einem verfahren zum diagnostizieren von sekundärlufteinblas-vorrichtung
DE69829140T2 (de) Diagnosesystem für das Treibstoffversorgungssystem eines Verbrennungsmotors
DE102010018445B4 (de) Maschinensteuersystem und Verfahren zur Kraftstoffdrucksensorleistungs-Diagnose auf der Grundlage der Hydrodynamik der Einspritzung
DE60117090T2 (de) Verfahren zur Bestimmung von Leckagen in einem Einspritzungsystem mit Verteilerleitung in einem Verbrennungsmotor
DE102004016418B4 (de) Fehlerdiagnosevorrichtung für eine Zufuhrvorrichtung für Sekundärluft
DE102015108515B4 (de) Vorrichtung und Verfahren zum Steuern eines Sauerstoffsensors
DE102004050989B4 (de) Verfahren zum Betreiben einer Abgasbehandlungsvorrichtung einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens
DE60215069T2 (de) Gerät zum Bestimmen von Fehlern eines Drucksensors
EP3298260B1 (fr) Système d'injection pour moteur à combustion interne et moteur à combustion interne équipé de ce système d'injection
DE102004028515B3 (de) Verfahren und Vorrichtung zum Überwachen einer Kraftstoffzuführeinrichtung einer Brennkraftmaschine
DE19836845B4 (de) Verfahren und Vorrichtung zur Steuerung einer Antriebseinheit eines Kraftfahrzeugs
EP1711704B1 (fr) Procede pour surveiller le bon fonctionnement d'un systeme d'injection de carburant
DE19859913B4 (de) Kraftstoffzufuhrvorrichtung für Brennkraftmaschinen
DE4309854C2 (de) Verfahren und Vorrichtung zur Steuerung der Sekundärluftzufuhr für eine Brennkraftmaschine
DE102006007698B4 (de) Verfahren zum Betreiben einer Brennkraftmaschine, Computerprogramm-Produkt, Computerprogramm und Steuer- und/oder Regeleinrichtung für eine Brennkraftmaschine
EP1167731B1 (fr) Méthode pour surveiller le fonctionnement de pompes pour véhicules ayant au moins deux pompes électriques à carburant
DE102010018006B4 (de) Diagnosesystem für Steuerungsschaltungen von Systemen mit Funkenzündung und Direkteinspritzung
EP1180210B2 (fr) Procede et dispositif pour commander un moteur a combustion interne equipe d'un systeme de retraitement des gaz d'echappement
DE10138045B4 (de) Vorrichtung und Verfahren zur CPU-Diagnose
DE102007060634A1 (de) Verfahren zum Betreiben einer Brennkraftmaschine
DE112014001033B4 (de) Überwachungseinheit und Verfahren zur Überwachung eines Kraftstoffsystems
DE19641942B4 (de) Verfahren und Vorrichtung zur Fehlererkennung bei einer Brennkraftmaschine

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

AK Designated contracting states

Kind code of ref document: A2

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 02D 41/22 A, 7F 02M 37/18 B

17P Request for examination filed

Effective date: 20030502

AKX Designation fees paid

Designated state(s): DE FR IT SE

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

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JOOS, KLAUS

Inventor name: WEISS, RUEDIGER

Inventor name: KROEPKE, KLAUS

Inventor name: GRASS, GERD

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT SE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50104742

Country of ref document: DE

Date of ref document: 20050113

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

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

ET Fr: translation filed
26N No opposition filed

Effective date: 20050909

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

Ref country code: DE

Payment date: 20130627

Year of fee payment: 13

Ref country code: SE

Payment date: 20130423

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20130523

Year of fee payment: 13

Ref country code: IT

Payment date: 20130427

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50104742

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20141231

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50104742

Country of ref document: DE

Effective date: 20141101

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

Ref country code: SE

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

Effective date: 20140429

Ref country code: DE

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

Effective date: 20141101

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: 20140430

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 NON-PAYMENT OF DUE FEES

Effective date: 20140428