EP1260703A3 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

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Publication number
EP1260703A3
EP1260703A3 EP02010912A EP02010912A EP1260703A3 EP 1260703 A3 EP1260703 A3 EP 1260703A3 EP 02010912 A EP02010912 A EP 02010912A EP 02010912 A EP02010912 A EP 02010912A EP 1260703 A3 EP1260703 A3 EP 1260703A3
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
valve seat
seat body
elevations
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
EP02010912A
Other languages
German (de)
French (fr)
Other versions
EP1260703A2 (en
EP1260703B1 (en
Inventor
Joerg Heyse
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 EP1260703A2 publication Critical patent/EP1260703A2/en
Publication of EP1260703A3 publication Critical patent/EP1260703A3/en
Application granted granted Critical
Publication of EP1260703B1 publication Critical patent/EP1260703B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/188—Spherical or partly spherical shaped valve member ends
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector

Landscapes

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

Abstract

Ein Brennstoffeinspritzventil (1) für Brennstoffeinspritzanlagen von Brennkraftmaschinen umfaßt eine Magnetspule (10), eine mit der Magnetspule (10) in Wirkverbindung stehende und in einer Schließrichtung von einer Rückstellfeder (23) beaufschlagte Ventilnadel (3) zur Betätigung eines Ventilschließkörpers (4), der zusammen mit einer an einem Ventilsitzkörper (5) ausgebildeten Ventilsitzfläche (6) einen Dichtsitz bildet, und zumindest eine Abspritzöffnung (7), die in dem Ventilsitzkörper (5) ausgebildet ist. Die Abspritzöffnungen (7) münden aus Erhebungen (36) aus, welche eine innere Stirnseite (37) des Ventilsitzkörpers (5) überragen, wobei der Brennstoff durch Strömungskanäle (39) in den Erhebungen (36) geleitet wird.

Figure 00000001
Figure 00000002
A fuel injection valve (1) for fuel injection systems of internal combustion engines comprises a magnet coil (10), a valve needle (3), which is operatively connected to the magnet coil (10) and acted upon in a closing direction by a return spring (23), for actuating a valve closing body (4) forms a sealing seat together with a valve seat surface (6) formed on a valve seat body (5), and at least one spray opening (7) formed in the valve seat body (5). The spray openings (7) open out from elevations (36) which protrude beyond an inner end face (37) of the valve seat body (5), the fuel being conducted through flow channels (39) in the elevations (36).
Figure 00000001
Figure 00000002
EP02010912A 2001-05-21 2002-05-16 Fuel injection valve Expired - Lifetime EP1260703B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10124745 2001-05-21
DE2001124745 DE10124745A1 (en) 2001-05-21 2001-05-21 Fuel injector

Publications (3)

Publication Number Publication Date
EP1260703A2 EP1260703A2 (en) 2002-11-27
EP1260703A3 true EP1260703A3 (en) 2004-01-28
EP1260703B1 EP1260703B1 (en) 2007-07-04

Family

ID=7685600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02010912A Expired - Lifetime EP1260703B1 (en) 2001-05-21 2002-05-16 Fuel injection valve

Country Status (2)

Country Link
EP (1) EP1260703B1 (en)
DE (2) DE10124745A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10341790A1 (en) * 2003-09-10 2005-04-21 Bosch Gmbh Robert Fuel injector valve and nozzle for internal combustion engine has electromagnetic coil moving valve needle with spherical end engaging nozzle lining with thickened portions round nozzle bores
DE102008041676A1 (en) * 2008-08-29 2010-03-04 Robert Bosch Gmbh Fuel injector

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736264A (en) * 1952-09-04 1955-09-07 Daimler Benz Ag Improvements in liquid fuel injection nozzle devices
DE2711350A1 (en) * 1977-03-16 1978-09-21 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES
GB2097471A (en) * 1981-04-23 1982-11-03 Lucas Ind Plc I.C. engine fuel injection nozzle
EP0520659A1 (en) * 1991-06-25 1992-12-30 Oy Wärtsilä Diesel International Ltd. Improved fuel injection valve arrangement and engine using such an arrangement
US5540200A (en) * 1993-12-28 1996-07-30 Nissan Motor Co., Ltd. Fuel injection valve
US5752316A (en) * 1995-02-27 1998-05-19 Aisan Kogyo Kabushiki Kaisha Orifice plate for injector and method of manufacturing the same
DE19847460A1 (en) * 1998-10-15 2000-04-20 Bosch Gmbh Robert Fuel injection valve nozzle with orifice at first converges then diverges to combustion chamber as circular elliptical or slot orifice section.
DE10056039A1 (en) * 2000-11-11 2002-05-16 Bosch Gmbh Robert Fuel injection valve, for an IC motor, has a disk at the injection openings with a bi-metal or shape memory alloy section which is distorted by a heater to free selected injection openings with the same sealed seat

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT378244B (en) * 1982-12-14 1985-07-10 Steyr Daimler Puch Ag INJECTION NOZZLE FOR AIR COMPRESSING, SELF-IGNITIONING PISTON PISTON COMBUSTION ENGINES
DE4202387C2 (en) * 1991-11-11 1999-09-09 Bosch Gmbh Robert Valve with a spray opening
DE4222137B4 (en) * 1992-07-06 2006-05-04 Robert Bosch Gmbh Fuel injector for diesel internal combustion engines
US5484108A (en) * 1994-03-31 1996-01-16 Siemens Automotive L.P. Fuel injector having novel multiple orifice disk members
DE19530995A1 (en) * 1995-08-23 1997-02-27 Bosch Gmbh Robert Fuel injector
JP3329239B2 (en) * 1997-09-05 2002-09-30 トヨタ自動車株式会社 Fuel injection valve
DE19804463B4 (en) 1998-02-05 2006-06-14 Daimlerchrysler Ag Fuel injection system for gasoline engines
JP2000291513A (en) * 1999-04-08 2000-10-17 Toyota Motor Corp Diesel engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736264A (en) * 1952-09-04 1955-09-07 Daimler Benz Ag Improvements in liquid fuel injection nozzle devices
DE2711350A1 (en) * 1977-03-16 1978-09-21 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES
GB2097471A (en) * 1981-04-23 1982-11-03 Lucas Ind Plc I.C. engine fuel injection nozzle
EP0520659A1 (en) * 1991-06-25 1992-12-30 Oy Wärtsilä Diesel International Ltd. Improved fuel injection valve arrangement and engine using such an arrangement
US5540200A (en) * 1993-12-28 1996-07-30 Nissan Motor Co., Ltd. Fuel injection valve
US5752316A (en) * 1995-02-27 1998-05-19 Aisan Kogyo Kabushiki Kaisha Orifice plate for injector and method of manufacturing the same
DE19847460A1 (en) * 1998-10-15 2000-04-20 Bosch Gmbh Robert Fuel injection valve nozzle with orifice at first converges then diverges to combustion chamber as circular elliptical or slot orifice section.
DE10056039A1 (en) * 2000-11-11 2002-05-16 Bosch Gmbh Robert Fuel injection valve, for an IC motor, has a disk at the injection openings with a bi-metal or shape memory alloy section which is distorted by a heater to free selected injection openings with the same sealed seat

Also Published As

Publication number Publication date
EP1260703A2 (en) 2002-11-27
DE10124745A1 (en) 2003-03-27
EP1260703B1 (en) 2007-07-04
DE50210406D1 (en) 2007-08-16

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