EP0846222B1 - Verfahren zum betrieb einer kraftstoffeinspritzeinrichtung - Google Patents

Verfahren zum betrieb einer kraftstoffeinspritzeinrichtung Download PDF

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Publication number
EP0846222B1
EP0846222B1 EP97914154A EP97914154A EP0846222B1 EP 0846222 B1 EP0846222 B1 EP 0846222B1 EP 97914154 A EP97914154 A EP 97914154A EP 97914154 A EP97914154 A EP 97914154A EP 0846222 B1 EP0846222 B1 EP 0846222B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pressure
fuel injection
pressure accumulator
measuring device
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
EP97914154A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0846222A1 (de
Inventor
Eric Schmidt
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
Priority claimed from DE1996125487 external-priority patent/DE19625487A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0846222A1 publication Critical patent/EP0846222A1/de
Application granted granted Critical
Publication of EP0846222B1 publication Critical patent/EP0846222B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02M63/00—Other 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
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/088—Safety, indicating, or supervising devices relating to tightness
    • 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
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type

Definitions

  • the invention is based on one of US Pat. No. 5,197,438 known methods for operating a fuel injection device, where the fuel in under high pressure in a high-pressure accumulator is promoted, the pressure of a pressure control valve is controlled and out of fuel for injection via electrically controlled injection valves is removed.
  • Fuel injector it can happen that High pressure fuel storage system is leaking what especially with regard to the high injection pressures for injection of fuel in self-igniting internal combustion engines is particularly critical.
  • the device can advantageously be used for Claim 3 a leakage amount occurring in the high pressure part capture or check according to claim 4 whether the controlled fuel injection quantity also the actually injected amount of carbon corresponds.
  • a high-pressure fuel accumulator 1 is shown in the figure, via a delivery line 2 from a fuel pump 3, which sucks fuel from a fuel tank 4 with Fuel is supplied at high injection pressure brought. There are pressures that essentially are above 1,000 bar.
  • the pressure in the high-pressure fuel reservoir is detected by a pressure sensor 6, the Signal is supplied to a control device 7 through which if a fixed or one is exceeded desired pressure, which depends on a particular Operating state of the associated internal combustion engine can, by a corresponding signal, a pressure control valve 9 is controlled. This is located in a fuel return line 10 from the high-pressure fuel store the fuel tank 4.
  • the fuel pump is z. B. in sync with that of the Fuel injector operated Internal combustion engine driven, that is at a speed that is also already detected to control the injection.
  • the Fuel pump can also be separated by a special Drive can be operated, and the related Drive speed of the fuel pump is also detected be, e.g. B. by a speed sensor 15.
  • this Drive speed With the help of this Drive speed and the fact that the fuel pump promotes a constant flow rate per revolution, lets now with the help of this speed in the high-pressure fuel accumulator indirectly record the amount of fuel supplied, so that on a flow meter for immediate Measurement of the fuel quantity dispensed with can be. But also when the fuel pump is off certain reasons with a variable funding volume works, the amount of fuel delivered by this can also from the control signals or advantageous by a quantity measuring device 22.
  • the Pressure control valve controlled fuel quantity by means of a Flow meter 17 in the fuel return line 10 can be measured.
  • the one corresponding to this crowd Signal added to one of the total fuel injection quantity corresponding in time unit, from the control device emitted signal is now using a comparison device 18 with the corresponding processed signal for the delivery rate of the delivery pump 3 compared from the speed signal. If there is a deviation from The amount of fuel supplied and discharged is now by the control device 7 a, triggered by the Comparison device 18, a signal for a display 20 or for an intervention in the operation of the Fuel injector issued. You can use this signal z. B. the drive of the fuel pump 3 be turned off or the entire fuel injector stopped in the internal combustion engine or on emergency operation can be reduced.
  • a flow rate measuring device 17 can be known in itself Way inserted into the fuel return line 10 Throttle are provided and the pressure in front and after the throttle are compared to each other around to form a quantity signal from it.
  • Such flow measuring devices e.g. in connection with injectors described in DE-A-3722264. It is also possible to use other suitable sensors. For example, can advantageously a sensor already used for another purpose are used economically, e.g. Sensors that also be used for air mass measurement and by physical structure are known from DE-A-29 19 433.

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)
EP97914154A 1996-06-26 1997-02-14 Verfahren zum betrieb einer kraftstoffeinspritzeinrichtung Expired - Lifetime EP0846222B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1996125487 DE19625487A1 (de) 1995-09-14 1996-06-26 Verfahren zum Betrieb einer Kraftstoffeinspritzeinrichtung
DE19625487 1996-06-26
PCT/DE1997/000293 WO1997049909A1 (de) 1996-06-26 1997-02-14 Verfahren zum betrieb einer kraftstoffeinspritzeinrichtung

Publications (2)

Publication Number Publication Date
EP0846222A1 EP0846222A1 (de) 1998-06-10
EP0846222B1 true EP0846222B1 (de) 2001-11-28

Family

ID=7798016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97914154A Expired - Lifetime EP0846222B1 (de) 1996-06-26 1997-02-14 Verfahren zum betrieb einer kraftstoffeinspritzeinrichtung

Country Status (10)

Country Link
US (1) US6119656A (ko)
EP (1) EP0846222B1 (ko)
JP (1) JPH11511832A (ko)
KR (1) KR19990043977A (ko)
CN (1) CN1079898C (ko)
BR (1) BR9702321A (ko)
DE (1) DE59705538D1 (ko)
ES (1) ES2169369T3 (ko)
RU (1) RU2170360C2 (ko)
WO (1) WO1997049909A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69916363T2 (de) * 1998-05-29 2005-03-24 Toyota Jidosha K.K., Toyota Kraftstoffversorgung für Verbrennungsmotor
JP3695213B2 (ja) * 1999-04-02 2005-09-14 いすゞ自動車株式会社 コモンレール式燃料噴射装置
KR100448356B1 (ko) * 2001-08-11 2004-09-10 현대자동차주식회사 차량의 자기진단방법
DE10141821C1 (de) * 2001-08-27 2003-04-24 Bosch Gmbh Robert Verfahren, Computerprogramm und Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine
JP2005127164A (ja) * 2003-10-21 2005-05-19 Denso Corp コモンレール式燃料噴射装置
DE102008001670B4 (de) * 2008-05-08 2022-03-31 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine
DE102013201997A1 (de) * 2013-02-07 2014-08-07 Robert Bosch Gmbh Verfahren und Vorrichtung zum Betrieb einer Kraftstoffeinspritzeinrichtung insbesondere eines Kraftfahrzeuges

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922986A1 (de) * 1969-05-06 1971-01-21 Erdoel Raffinerie Mannheim Gmb Verfahren zum schnellen Erkennen einer Leckage beim Transport von Fluessigkeiten in Rohrleitungen
US4727748A (en) * 1984-12-25 1988-03-01 Nippon Kokan Kabushiki Kaisha Method and apparatus for detecting leaks in a gas pipe line
EP0545450A1 (en) * 1991-11-06 1993-06-09 Shell Internationale Researchmaatschappij B.V. Statistically detecting leakage of fluid from a conduit
JPH06213051A (ja) * 1993-01-19 1994-08-02 Nippondenso Co Ltd 蓄圧式燃料噴射装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1801156A1 (de) * 1968-10-04 1970-04-16 Teldix Luftfahrt Ausruestung Kraftstoff-Einspritzvorrichtung mit einer durch eine bewegliche Wand abgeteilten Doppelkammer
US3598096A (en) * 1970-01-28 1971-08-10 Gen Motors Corp Fuel metering system
US4109669A (en) * 1973-01-19 1978-08-29 Regie Nationale Des Usines Renault Electronic fuel injection system for internal combustion engines
JPS5323860B2 (ko) * 1973-08-30 1978-07-17
US3933135A (en) * 1974-05-01 1976-01-20 Zillman Jack H Electronic controlled manifold injection system
US4048964A (en) * 1975-07-24 1977-09-20 Chrysler Corporation Fuel metering apparatus and method
JPS5840829B2 (ja) * 1975-12-12 1983-09-08 日立マクセル株式会社 ヒスイデンカイエキデンチ
US4205648A (en) * 1977-05-19 1980-06-03 Chrysler Corporation Fuel circuit for an internal combustion engine
JPS60145438A (ja) * 1983-09-07 1985-07-31 Hitachi Ltd 内燃機関の燃料制御装置
JPH0199056U (ko) * 1987-12-23 1989-07-03
JP2869464B2 (ja) * 1989-05-30 1999-03-10 富士重工業株式会社 ２サイクルエンジンの燃料噴射制御装置
US4971005A (en) * 1989-07-28 1990-11-20 United Technologies Corporation Fuel control utilizing a multifunction valve
JP3147460B2 (ja) * 1991-04-26 2001-03-19 株式会社デンソー 内燃機関の燃料噴射装置
JPH056857A (ja) * 1991-06-27 1993-01-14 Sanyo Electric Co Ltd 多層レジスト層の形成方法
JP3191388B2 (ja) * 1992-03-27 2001-07-23 株式会社デンソー ディーゼル機関の蓄圧式燃料供給装置
IT1261575B (it) * 1993-09-03 1996-05-23 Fiat Ricerche Metodo di diagnosi di malfunzionamenti del circuito ad alta pressione di impianti di iniezione ad alta pressione per motori a combustione interna
US5507266A (en) * 1994-04-11 1996-04-16 Siemens Automotive L.P. Fuel pressure control using hysteresis pump drive
DE19534051A1 (de) * 1995-09-14 1997-03-20 Bosch Gmbh Robert Verfahren zum Betrieb einer Kraftstoffeinspritzeinrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922986A1 (de) * 1969-05-06 1971-01-21 Erdoel Raffinerie Mannheim Gmb Verfahren zum schnellen Erkennen einer Leckage beim Transport von Fluessigkeiten in Rohrleitungen
US4727748A (en) * 1984-12-25 1988-03-01 Nippon Kokan Kabushiki Kaisha Method and apparatus for detecting leaks in a gas pipe line
EP0545450A1 (en) * 1991-11-06 1993-06-09 Shell Internationale Researchmaatschappij B.V. Statistically detecting leakage of fluid from a conduit
JPH06213051A (ja) * 1993-01-19 1994-08-02 Nippondenso Co Ltd 蓄圧式燃料噴射装置

Also Published As

Publication number Publication date
EP0846222A1 (de) 1998-06-10
WO1997049909A1 (de) 1997-12-31
US6119656A (en) 2000-09-19
CN1079898C (zh) 2002-02-27
CN1194681A (zh) 1998-09-30
RU2170360C2 (ru) 2001-07-10
KR19990043977A (ko) 1999-06-25
BR9702321A (pt) 1999-03-09
DE59705538D1 (de) 2002-01-10
JPH11511832A (ja) 1999-10-12
ES2169369T3 (es) 2002-07-01

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