EP0882885A2 - Système d'injection de combustible pour moteurs à combustion interne - Google Patents

Système d'injection de combustible pour moteurs à combustion interne Download PDF

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Publication number
EP0882885A2
EP0882885A2 EP98102762A EP98102762A EP0882885A2 EP 0882885 A2 EP0882885 A2 EP 0882885A2 EP 98102762 A EP98102762 A EP 98102762A EP 98102762 A EP98102762 A EP 98102762A EP 0882885 A2 EP0882885 A2 EP 0882885A2
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
internal combustion
control valve
fuel injection
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.)
Withdrawn
Application number
EP98102762A
Other languages
German (de)
English (en)
Other versions
EP0882885A3 (fr
Inventor
Ulrich Koelle
Detlev Dr. Straub
Peter Schubert
Andreas Kellner
Marcus Lenz
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 EP0882885A2 publication Critical patent/EP0882885A2/fr
Publication of EP0882885A3 publication Critical patent/EP0882885A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a fuel injection system for Internal combustion engines according to the preamble of claim 1 out.
  • the fuel injection system becomes the high-pressure fuel reservoir powered by a high pressure fuel pump and the pressure in the high-pressure fuel accumulator through a pressure control valve controlled.
  • the fuel injection system according to the invention has the advantage that the inserted filter impairs the function of the pressure control valve is avoided. Especially the filter is advantageously designed so that it before all things hold back the components that function of the pressure control valve could significantly affect. These are in particular parts that are on the passage cross sections of the pressure control valve would be retained. A in contrast dimensioned filter according to claim 2 basically a sufficient flow cross-section for Available, the clear width of the several passage cross sections certainly holds back parts Outflow cross section of the pressure control valve could clog.
  • FIG. 1 is a fuel injection system for internal combustion engines reproduced in a schematic representation.
  • This consists of a high-pressure fuel pump 5, the Fuel from a fuel tank 6 if necessary with the interposition of a fuel pump and sucks a filter.
  • the high pressure fuel pump delivers the high pressure fuel via a Pressure line 7 in a high-pressure fuel reservoir 8.
  • Von this lead pressure lines 15 to electrically controlled Fuel injectors 14 from that of each Injection point of the internal combustion engine not shown are assigned and controlled there depending bring fuel to injection from operating parameters.
  • the fuel injectors are replaced by a Control device 18 according to the time of opening and duration of opening controlled.
  • This control device also serves Monitoring the pressure in the high-pressure fuel reservoir 8, in which they receive pressure signals from a pressure sensor 9 on the high-pressure fuel reservoir receives.
  • a Relief line 12 is provided to the fuel tank returns and in which a pressure control valve 11 is appropriate.
  • This can be done mechanically in a known manner work as a pressure relief valve and in addition the Opening pressure of this pressure control valve still electrically the control device 18 can be controlled.
  • Such one Pressure control valve is e.g. known from EP 0 267 162.
  • This filter can of course in a suitable manner either in the pressure control valve 11 be integrated or in the area of an outlet fitting on High-pressure fuel accumulator 8 may be arranged.
  • a filter executable is such as This filter.
  • This filter can be used as a gap filter or as Mesh filters are executed, the filtering Passage cross section in its clear width like this is small that it is preferably equal to or less than that clear cross-section of the pressure control valve is. Consequently are certain components of the pressure control valve withheld the outflow cross section of the Pressure control valve can clog.
  • the filtering Passage cross section in its clear width like this is small that it is preferably equal to or less than that clear cross-section of the pressure control valve is. Consequently are certain components of the pressure control valve withheld the outflow cross section of the Pressure control valve can clog.
  • the individual Passage cross sections on the filter ensures that a sufficient flow cross-section is available, the on the other hand, the relief effect when open Pressure control valve guaranteed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Filtration Of Liquid (AREA)
EP98102762A 1997-06-04 1998-02-18 Système d'injection de combustible pour moteurs à combustion interne Withdrawn EP0882885A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997123329 DE19723329A1 (de) 1997-06-04 1997-06-04 Kraftstoffeinspritzsystem für Brennkraftmaschinen
DE19723329 1997-06-04

Publications (2)

Publication Number Publication Date
EP0882885A2 true EP0882885A2 (fr) 1998-12-09
EP0882885A3 EP0882885A3 (fr) 2001-10-17

Family

ID=7831322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102762A Withdrawn EP0882885A3 (fr) 1997-06-04 1998-02-18 Système d'injection de combustible pour moteurs à combustion interne

Country Status (3)

Country Link
EP (1) EP0882885A3 (fr)
JP (1) JPH1150934A (fr)
DE (1) DE19723329A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087131A2 (fr) * 1999-09-21 2001-03-28 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electrovanne régulant la pression de carburant dans un système d'injection de machine à combustion interne
EP1126162A2 (fr) * 2000-02-15 2001-08-22 Robert Bosch Gmbh Soupape électromagnétique pour la régulation de la pression de combustible d'un moteur à combustion interne

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19911068A1 (de) * 1999-03-12 2000-09-14 Bayerische Motoren Werke Ag Kraftstoffanlage für ein Kraftfahrzeug

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267162A2 (fr) 1986-11-07 1988-05-11 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electrovannes régulant la pression, notamment pour circuits à haute pression pour systèmes d'injection de machines à combustion interne
EP0299337A2 (fr) 1987-07-08 1989-01-18 IVECO FIAT S.p.A. Système d'injection de carburant pour un moteur à combustion interne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2689226B2 (ja) * 1994-12-02 1997-12-10 株式会社ゼクセル 高圧燃料噴射装置用燃料ポンプ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0267162A2 (fr) 1986-11-07 1988-05-11 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electrovannes régulant la pression, notamment pour circuits à haute pression pour systèmes d'injection de machines à combustion interne
EP0299337A2 (fr) 1987-07-08 1989-01-18 IVECO FIAT S.p.A. Système d'injection de carburant pour un moteur à combustion interne

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1087131A2 (fr) * 1999-09-21 2001-03-28 ELASIS SISTEMA RICERCA FIAT NEL MEZZOGIORNO Società Consortile per Azioni Electrovanne régulant la pression de carburant dans un système d'injection de machine à combustion interne
EP1087131A3 (fr) * 1999-09-21 2001-09-05 Robert Bosch Gmbh Electrovanne régulant la pression de carburant dans un système d'injection de machine à combustion interne
EP1126162A2 (fr) * 2000-02-15 2001-08-22 Robert Bosch Gmbh Soupape électromagnétique pour la régulation de la pression de combustible d'un moteur à combustion interne
EP1126162A3 (fr) * 2000-02-15 2002-12-18 Robert Bosch Gmbh Soupape électromagnétique pour la régulation de la pression de combustible d'un moteur à combustion interne

Also Published As

Publication number Publication date
DE19723329A1 (de) 1998-12-10
EP0882885A3 (fr) 2001-10-17
JPH1150934A (ja) 1999-02-23

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