EP1398496A2 - Conduite haute-pression pour système d'injection de carburant de moteur à combustion interne - Google Patents

Conduite haute-pression pour système d'injection de carburant de moteur à combustion interne Download PDF

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Publication number
EP1398496A2
EP1398496A2 EP03008432A EP03008432A EP1398496A2 EP 1398496 A2 EP1398496 A2 EP 1398496A2 EP 03008432 A EP03008432 A EP 03008432A EP 03008432 A EP03008432 A EP 03008432A EP 1398496 A2 EP1398496 A2 EP 1398496A2
Authority
EP
European Patent Office
Prior art keywords
pressure line
pressure
constriction
fuel injection
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.)
Withdrawn
Application number
EP03008432A
Other languages
German (de)
English (en)
Other versions
EP1398496A3 (fr
Inventor
Peter Grabert
Ralf Dohms
Oksana Fuetterer
Helmar Alber
Michael Haug
Wolfgang Leuchtenmueller
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 EP1398496A2 publication Critical patent/EP1398496A2/fr
Publication of EP1398496A3 publication Critical patent/EP1398496A3/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Withdrawn legal-status Critical Current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
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/0245—Means for varying pressure in common rails by bleeding fuel pressure between the high pressure pump and the common rail
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/04—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • 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
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/28—Details of throttles in fuel-injection apparatus
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Definitions

  • the High pressure line for a Fuel injection system of internal combustion engines has the High pressure line at least one constriction, so that the desired cross-sectional constriction without additional Components and achieved with very low production costs becomes.
  • the constriction is fluidic cheaper than an inserted disc, which a has sudden cross-sectional constriction result.
  • the at least one constriction by forming in particular by rolling or rolling or by Squeezing is made. All these procedures are good to master production technology and allow that Introducing a constriction in a high-pressure line, the usually made of a ductile material, in particular Metal, exists. Depending on whether a circular Cross-sectional area in the area of the constriction or a Rectangular cross-sectional area is sought either the constriction by rolling or rolling or be made by squeezing.
  • the high pressure line between two Rails be arranged. This is especially beneficial if a fuel injection system with two rails, like it For example, is used in V8 engines, is provided. Also can the high-pressure line according to the invention between a Pump and a nozzle in a pump-line-nozzle fuel injection system be used.
  • Fig. 1 is a block diagram of a rail fuel injection system with a radial piston pump 1 represented, representing other types of construction Explanation of the high pressure line of the invention is used. However, the invention is not on such fuel injection systems limited, but can be used wherever advantageous where unwanted Pressure pulsations occur in high-pressure systems, especially in other fuel injection systems, such.
  • the radial piston pump 1 has a suction side 3 and a (High) -Printseite 5, which has a check valve 7 with a rail 9 is in communication.
  • the check valve 7 and the rail 9 are through a first high-pressure line. 8 hydraulically connected.
  • the fuel return 13 opens into the suction side 3 of Radial piston pump 1.
  • the suction side 3 is of one here Not shown fuel tank supplied with fuel.
  • a quantity control valve 15 is provided between the pressure side 5 and fuel return 13, the in turn hydraulically connected to the suction side 3 is, a quantity control valve 15 is provided. If that Volume control valve 15, as shown in Fig. 1, opened is, on the pressure side 5 of the radial piston pump 1 no Pressure build-up take place as a hydraulic connection over the fuel return 13 with the suction side 3 is. In this state, the radial piston pump 1 promotes none Fuel in the rail 9, because the pressure in the rail 9 very much higher than the pressure on the suction side 3 of Radial piston pump 1 is.
  • the quantity control valve 15 When the quantity control valve 15 is closed, the hydraulic connection between the suction side 3 and pressure side 5 is interrupted via the fuel return 13, so that a pressure build-up in the pump elements 17 of the radial piston pump 1 can take place. In this state, the radial piston pump 1 promotes fuel into the rail 9 as soon as the pressure built up by the pump elements 17 is greater than the pressure prevailing in the rail 9 pressure. Due to the non-steady promotion of the pump elements 17, by switching operations of the quantity control valve 15, the pressure control valve 11 or other transient processes can lead to undesirable pressure pulsations in the high pressure region of the fuel injection system.
  • the rail 9 is hydraulically connected by further high-pressure lines 19 with injectors 21 which inject the fuel into the combustion chambers or intake ports, not shown, of an internal combustion engine, not shown.
  • the second High-pressure line 10 or the high-pressure lines 19 can the mentioned pressure pulsations reduced or even be completely suppressed.
  • FIG. 2 shows a high-pressure line 23 according to the invention in longitudinal section and in cross section along the section line A-A shown.
  • the high-pressure line 23 according to the invention has, like other lines also, an inner diameter 25th and an outer diameter 27.
  • the inventive High pressure line 23 has a cylindrical cross section. in the Area of the section line A-A has the high pressure line 23rd a constriction 29 on. This constriction 29 is at the first embodiment shown in FIG. 2 by rotating roller burnishing tools 31 produced.
  • the Burnishing tools 31 rotate about their axis of rotation 33.
  • the high pressure line 23 is rotated.
  • the Rotary axes 33 and thus the rolling tools 31 are as long moved towards each other until the desired Constriction 29 made in the high pressure line 23 has been. It must be ensured that the Inner diameter of the high-pressure line 23 according to the invention in the area of constriction 29 not complete is closed.
  • Fig. 2 is a cross section through the first Embodiment of an inventive High pressure line 23 along the section line A-A shown.
  • Fig. 3 is a second embodiment of a High pressure line 23 according to the invention also in Longitudinal section and in cross section along the section line A-A shown. Same components are the same Reference numeral provided and it applies with respect to FIG. 2 Said accordingly.
  • the constriction 29 is not rotationally symmetrical, but the Constriction 29 is by squeezing the high pressure line 23rd been prepared. Consequently, the cross section is in Area of the constriction 29 not rotationally symmetric, but has two flats 35.
  • the constriction 29 is also very simple and inexpensive and also causes the desired narrowing of the Flow cross section of the high pressure line 23 in the area the constriction 29.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Pipe Accessories (AREA)
EP03008432A 2002-09-09 2003-04-11 Conduite haute-pression pour système d'injection de carburant de moteur à combustion interne Withdrawn EP1398496A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10241657 2002-09-09
DE10241657A DE10241657A1 (de) 2002-09-09 2002-09-09 Hochdruckleitung für Kraftstoffeinspitzsysteme von Brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP1398496A2 true EP1398496A2 (fr) 2004-03-17
EP1398496A3 EP1398496A3 (fr) 2005-04-20

Family

ID=31724537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03008432A Withdrawn EP1398496A3 (fr) 2002-09-09 2003-04-11 Conduite haute-pression pour système d'injection de carburant de moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP1398496A3 (fr)
JP (1) JP2004100705A (fr)
DE (1) DE10241657A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011047986A1 (fr) 2009-10-21 2011-04-28 Robert Bosch Gmbh Système d'injection de carburant
US10746147B2 (en) 2016-05-11 2020-08-18 Peter Fuchs Technology Group Ag High-pressure line

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009085403A (ja) * 2007-10-02 2009-04-23 Denso Corp 熱交換器用の配管および熱交換器
JP2009192487A (ja) * 2008-02-18 2009-08-27 Fuji Bourdon Seisakusho:Kk ブルドン管圧力計

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006501A1 (de) * 1990-03-02 1991-09-05 Bayerische Motoren Werke Ag Kraftstoffverteilerleitung
DE4131501A1 (de) * 1991-09-21 1993-03-25 Bosch Gmbh Robert Daempfervorrichtung
DE19548610A1 (de) * 1995-12-23 1997-06-26 Bosch Gmbh Robert Kraftstoffeinspritzeinirchtung für Brennkraftmaschinen
US6056263A (en) * 1996-10-02 2000-05-02 Robert Bosch Gmbh Valve with constrictions to adjust stroke length
EP1217202A1 (fr) * 2000-12-22 2002-06-26 Renault Procédé d'amortissement des ondes de pression dans une ligne hydraulique, et dispositif d'injection à rampe commune mettant en oeuvre ce procédé
US20020092502A1 (en) * 2000-11-29 2002-07-18 Horst Harndorf Pressure controlled injector for injection systems with high pressure collecting area

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4006501A1 (de) * 1990-03-02 1991-09-05 Bayerische Motoren Werke Ag Kraftstoffverteilerleitung
DE4131501A1 (de) * 1991-09-21 1993-03-25 Bosch Gmbh Robert Daempfervorrichtung
DE19548610A1 (de) * 1995-12-23 1997-06-26 Bosch Gmbh Robert Kraftstoffeinspritzeinirchtung für Brennkraftmaschinen
US6056263A (en) * 1996-10-02 2000-05-02 Robert Bosch Gmbh Valve with constrictions to adjust stroke length
US20020092502A1 (en) * 2000-11-29 2002-07-18 Horst Harndorf Pressure controlled injector for injection systems with high pressure collecting area
EP1217202A1 (fr) * 2000-12-22 2002-06-26 Renault Procédé d'amortissement des ondes de pression dans une ligne hydraulique, et dispositif d'injection à rampe commune mettant en oeuvre ce procédé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011047986A1 (fr) 2009-10-21 2011-04-28 Robert Bosch Gmbh Système d'injection de carburant
DE102009045898A1 (de) 2009-10-21 2011-04-28 Robert Bosch Gmbh Kraftstoffeinspritzsystem
US10746147B2 (en) 2016-05-11 2020-08-18 Peter Fuchs Technology Group Ag High-pressure line

Also Published As

Publication number Publication date
JP2004100705A (ja) 2004-04-02
EP1398496A3 (fr) 2005-04-20
DE10241657A1 (de) 2004-03-25

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