EP1262657A3 - Fuel injection system for internal combustion engines, in particular for diesel engines - Google Patents

Fuel injection system for internal combustion engines, in particular for diesel engines Download PDF

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Publication number
EP1262657A3
EP1262657A3 EP02008680A EP02008680A EP1262657A3 EP 1262657 A3 EP1262657 A3 EP 1262657A3 EP 02008680 A EP02008680 A EP 02008680A EP 02008680 A EP02008680 A EP 02008680A EP 1262657 A3 EP1262657 A3 EP 1262657A3
Authority
EP
European Patent Office
Prior art keywords
valve
fuel
internal combustion
engines
injection system
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Withdrawn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
EP02008680A
Other languages
German (de)
French (fr)
Other versions
EP1262657A2 (en
Inventor
Kurt Frank
Friedrich Boecking
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 EP1262657A2 publication Critical patent/EP1262657A2/en
Publication of EP1262657A3 publication Critical patent/EP1262657A3/en
Withdrawn legal-status Critical Current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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M55/025—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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0043—Two-way valves
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/005—Pressure relief valves
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
    • 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
    • F02M63/0275—Arrangement of common rails
    • F02M63/028—Returnless common rail system

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Ein Kraftstoffeinspritzsystem für Brennkraftmaschinen, insbesondere Dieselmotoren, mit einem von einer Hochdruckpumpe (14) gespeisten Kraftstoffspeicher (15, 15a, 15b) (sog. Rail), der eine der Zylinderzahl der Brennkraftmaschine entsprechende Anzahl Injektoren (22-25) mit Kraftstoff versorgt, weist ein an den Kraftstoffspeicher dichtend angeschlossenes Druckbegrenzungsventil (49, 49a, 49b) mit einem Ventilgehäuse (51, 51b), einem Hochdruckbereich (Zulauf 56), einem Niederdruckbereich (Rücklauf 57; 73, 74), einem dem Zulauf zugewandten Ventilsitz (55), einem axial verschieblichen Ventilkörper (54) und einer den Ventilkörper in Richtung des Ventilsitzes beaufschlagenden Ventilfeder (52) auf.A fuel injection system for internal combustion engines, in particular Diesel engines, powered by a high pressure pump (14) Fuel storage (15, 15a, 15b) (so-called. Rail), one of the number of cylinders Internal combustion engine corresponding number of injectors (22-25) with fuel supplied, has a seal connected to the fuel storage Pressure relief valve (49, 49a, 49b) with a valve housing (51, 51b), a high pressure area (inlet 56), a low pressure area (return 57; 73, 74), a valve seat (55) facing the inlet, one axially sliding valve body (54) and one the valve body in the direction of Valve spring acting on the valve seat (52).

Eine wesentliche Besonderheit besteht darin, dass das Druckbegrenzungsventil (49, 49a, 49b) - zumindest teilweise - in den Kraftstoffspeicher (15, 15a, 15b) integriert ist, derart dass zumindest der Ventilsitz (55) und der Ventilkörper (54) räumlich dem Kraftstoffspeicher (15, 15a, 15b) und die Abdichtung (69) des Druckbegrenzungsventils (49, 49a, 49b) gegenüber dem Kraftstoffspeicher (15, 15a, 15b) dem Niederdruckbereich des Druckbegrenzungsventils (49, 49a, 49b) zugeordnet ist.

Figure 00000001
An essential peculiarity is that the pressure limiting valve (49, 49a, 49b) is - at least partially - integrated in the fuel accumulator (15, 15a, 15b), so that at least the valve seat (55) and the valve body (54) spatially face the fuel accumulator (15, 15a, 15b) and the seal (69) of the pressure relief valve (49, 49a, 49b) with respect to the fuel accumulator (15, 15a, 15b) is assigned to the low pressure area of the pressure relief valve (49, 49a, 49b).
Figure 00000001
EP02008680A 2001-05-29 2002-04-18 Fuel injection system for internal combustion engines, in particular for diesel engines Withdrawn EP1262657A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10125944 2001-05-29
DE10125944A DE10125944A1 (en) 2001-05-29 2001-05-29 Fuel injection system for internal combustion engines, in particular diesel engines

Publications (2)

Publication Number Publication Date
EP1262657A2 EP1262657A2 (en) 2002-12-04
EP1262657A3 true EP1262657A3 (en) 2004-12-01

Family

ID=7686395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02008680A Withdrawn EP1262657A3 (en) 2001-05-29 2002-04-18 Fuel injection system for internal combustion engines, in particular for diesel engines

Country Status (4)

Country Link
US (1) US6675774B2 (en)
EP (1) EP1262657A3 (en)
JP (1) JP2002364490A (en)
DE (1) DE10125944A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10138756A1 (en) * 2001-08-07 2003-02-20 Bosch Gmbh Robert High-pressure fuel storage
DE10222895A1 (en) * 2002-05-23 2003-12-11 Bosch Gmbh Robert High pressure accumulator for fuel injection systems with integrated pressure control valve
ATE397723T1 (en) * 2004-06-30 2008-06-15 Fiat Ricerche INJECTION SYSTEM FOR COMBUSTION ENGINE
US20060196476A1 (en) 2005-02-28 2006-09-07 Caterpillar Inc. Pressure relief valve
EP1741923B1 (en) * 2005-07-08 2009-09-02 C.R.F. Societa Consortile per Azioni A connection system of a tubular rail for high-pressure fuel
JP4921886B2 (en) * 2006-08-16 2012-04-25 ヤンマー株式会社 Engine fuel supply system
DE102007019076A1 (en) * 2007-04-23 2008-10-30 Poppe & Potthoff Gmbh Distribution pipe for a common rail injection system of a diesel engine comprises a pressure limiting valve having a valve seat formed on a step of a multi-step bore of the pipe passing through the wall of the pipe
FR2969217B1 (en) * 2010-12-20 2013-01-18 Bosch Gmbh Robert HIGH PRESSURE INJECTION ACCUMULATOR ACCUMULATOR PRESSURE LIMITATION VALVE
FR2973092B1 (en) * 2011-03-25 2016-09-02 Bosch Gmbh Robert SHUTTERING DEVICE, PRESSURE REGULATOR COMPRISING SUCH A DEVICE, DIESEL INJECTION DEVICE COMPRISING SUCH A REGULATOR, DIESEL ENGINE AND VEHICLE COMPRISING SUCH AN ENGINE
AT512438B1 (en) * 2012-01-27 2015-09-15 Bosch Gmbh Robert VALVE BLOCK FOR A HIGH-PRESSURE MEMORY OF A COMMON-RAIL HEAVY-OIL INJECTION SYSTEM
FR3009344B1 (en) * 2013-07-31 2015-08-07 Delphi Technologies Holding INTEGRATED ARRANGEMENT OF A HIGH PRESSURE VALVE AND AN INJECTION RAMP
JP6201504B2 (en) * 2013-08-09 2017-09-27 株式会社デンソー Fuel injection device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093619B (en) * 1956-01-31 1960-11-24 Pierre Etienne Bessiere Fuel injector for multi-cylinder engines
DE10012533A1 (en) * 1999-03-16 2000-09-28 Honda Motor Co Ltd Fuel injection system has injection pressure regulator housing divided into body contg. fuel chamber, cover contg. pressure regulating chamber; body is integrated with fuel delivery tube
US6135092A (en) * 1997-10-29 2000-10-24 General Motors Corporation Fuel injection system
US6148798A (en) * 1999-10-01 2000-11-21 Delphi Technologies, Inc. Coaxial flow through fuel rail with a damper for a recirculating fuel system
DE10022275A1 (en) * 1999-05-07 2000-12-28 Aisan Ind Overpressure valve for fuel supply system has valve seat guide part that accepts valve ball and is of width up to 60 microns larger than ball diameter so ball can slide within guide part

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4205637A (en) * 1976-12-13 1980-06-03 Toyota Jidosha Kogyo Kabushiki Kaisha Electronic fuel injection system for an internal combustion engine having electromagnetic valves and a fuel damper upstream thereof
US4653528A (en) * 1986-02-18 1987-03-31 General Motors Corporation Multi-adaptive fuel pressure regulator
US4732131A (en) * 1986-08-26 1988-03-22 Brunswick Corporation Fuel line purging device
IT208326Z2 (en) 1986-11-07 1988-05-28 Altecna Azienda Della Weber S PRESSURE REGULATING SOLENOID VALVE PARTICULARLY FOR HIGH PRESSURE CIRCUITS OF FUEL INJECTION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
DE19822671A1 (en) 1998-05-20 1999-11-25 Bosch Gmbh Robert Pressure limiting valve for internal combustion engine
US6336442B1 (en) * 2000-05-05 2002-01-08 Siemens Automotive Corporation Assembly for attachment of a housing to a structural member

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093619B (en) * 1956-01-31 1960-11-24 Pierre Etienne Bessiere Fuel injector for multi-cylinder engines
US6135092A (en) * 1997-10-29 2000-10-24 General Motors Corporation Fuel injection system
DE10012533A1 (en) * 1999-03-16 2000-09-28 Honda Motor Co Ltd Fuel injection system has injection pressure regulator housing divided into body contg. fuel chamber, cover contg. pressure regulating chamber; body is integrated with fuel delivery tube
DE10022275A1 (en) * 1999-05-07 2000-12-28 Aisan Ind Overpressure valve for fuel supply system has valve seat guide part that accepts valve ball and is of width up to 60 microns larger than ball diameter so ball can slide within guide part
US6148798A (en) * 1999-10-01 2000-11-21 Delphi Technologies, Inc. Coaxial flow through fuel rail with a damper for a recirculating fuel system

Also Published As

Publication number Publication date
EP1262657A2 (en) 2002-12-04
DE10125944A1 (en) 2002-12-05
US6675774B2 (en) 2004-01-13
JP2002364490A (en) 2002-12-18
US20020179056A1 (en) 2002-12-05

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