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EP0872636A3 - Fuel injection valve for internal combustion engines - Google Patents

Fuel injection valve for internal combustion engines Download PDF

Info

Publication number
EP0872636A3
EP0872636A3 EP98106006A EP98106006A EP0872636A3 EP 0872636 A3 EP0872636 A3 EP 0872636A3 EP 98106006 A EP98106006 A EP 98106006A EP 98106006 A EP98106006 A EP 98106006A EP 0872636 A3 EP0872636 A3 EP 0872636A3
Authority
EP
European Patent Office
Prior art keywords
valve
valve member
bore
internal combustion
combustion engines
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Withdrawn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
EP98106006A
Other languages
German (de)
French (fr)
Other versions
EP0872636A2 (en
Inventor
Detlev Dr. Potz
Roger Potschin
Stephan Haas
Thomas Kuegler
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 EP0872636A2 publication Critical patent/EP0872636A2/en
Publication of EP0872636A3 publication Critical patent/EP0872636A3/en
Withdrawn legal-status Critical Current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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
    • 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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel passages
    • F02M61/045—The valves being provided with fuel discharge orifices

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

Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem in einer Bohrung (7) eines Ventilkörpers (1) axial verschiebbaren Ventilglied (9) das an seinem brennraumseitigen Ende einen Ventilgliedkopf (11) aufweist, der auf seiner dem Ventilkörper (1) zugewandten Seite eine Dichtfläche (13) aufweist, mit der er mit einer an der brennraumseitigen Stirnseite des Ventilkörpers (1) vorgesehenen Ventilsitzfläche (17) zusammenwirkt und mit Einspritzöffnungen (29) im Ventilgliedkopf (11), die von einem zwischen dem Ventilglied (9) und der Wand der Bohrung (7) gebildeten Druckraum (19) abführend an der Umfangswand des Ventilgliedkopfes (11) austreten, wobei die Einspritzöffnungen (29) bei am Ventilsitz (17) anliegendem Ventilglied (9) von der Wand der Bohrung (7) verschlossen sind und erst während der nach außen gerichteten Öffnungshubbewegung des Ventilgliedes (9) durch Austauchen aus der Bohrung (7) aufgesteuert werden. Dabei soll das Ventilglied (9) unabhängig vom Kraftstoffhochdruck am Einspritzventil durch einen Piezoaktor (61) betätigt werden.

Figure 00000001
Figure 00000002
Fuel injection valve for internal combustion engines with a valve member (9) which is axially displaceable in a bore (7) of a valve body (1) and which has a valve member head (11) on its combustion chamber end, which has a sealing surface (13) on its side facing the valve body (1) , with which it interacts with a valve seat surface (17) provided on the end face of the valve body (1) on the combustion chamber and with injection openings (29) in the valve member head (11) which are formed by a valve valve (9) and the wall of the bore (7) The pressure chamber (19) formed exits on the circumferential wall of the valve member head (11), the injection openings (29) being closed by the wall of the bore (7) when the valve member (9) is in contact with the valve seat (17) and only during the outward direction Opening stroke movement of the valve member (9) can be controlled by emerging from the bore (7). The valve member (9) is to be actuated by a piezo actuator (61) regardless of the high fuel pressure at the injection valve.
Figure 00000001
Figure 00000002
EP98106006A 1997-04-18 1998-04-02 Fuel injection valve for internal combustion engines Withdrawn EP0872636A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19716226 1997-04-18
DE1997116226 DE19716226C2 (en) 1997-04-18 1997-04-18 Fuel injection valve for internal combustion engines

Publications (2)

Publication Number Publication Date
EP0872636A2 EP0872636A2 (en) 1998-10-21
EP0872636A3 true EP0872636A3 (en) 2002-01-23

Family

ID=7826893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106006A Withdrawn EP0872636A3 (en) 1997-04-18 1998-04-02 Fuel injection valve for internal combustion engines

Country Status (2)

Country Link
EP (1) EP0872636A3 (en)
DE (1) DE19716226C2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753162A1 (en) * 1997-11-29 1999-06-02 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19839125C1 (en) * 1998-08-27 2000-04-20 Siemens Ag Device and method for dosing fluid
DE19854508C1 (en) * 1998-11-25 2000-05-11 Siemens Ag Dosing device
DE19905152C1 (en) * 1999-02-08 2000-07-27 Univ Dresden Tech Fuel injection nozzle for internal combustion engine has pressure accumulator with nozzle body in which nozzle needle, with central bore open to combustion chamber, is fitted
DE19922964C2 (en) 1999-05-19 2003-03-27 Daimler Chrysler Ag Method of injecting diesel fuel
GB9919424D0 (en) * 1999-08-18 1999-10-20 Lucas Industries Ltd Fuel injector
DE19943142A1 (en) * 1999-09-09 2001-04-12 Siemens Ag Direct fuel injection dosing/proportioning device especially for petrol and diesel-powered combustion engines
DE19946603B4 (en) * 1999-09-29 2009-01-15 Robert Bosch Gmbh Fuel injection valve with compensating sealing elements
DE10004810A1 (en) * 2000-02-04 2001-08-16 Bosch Gmbh Robert Hydraulic stroke translation system
DE10007735A1 (en) * 2000-02-19 2001-09-06 Daimler Chrysler Ag Fuel injection valve for IC engines has pressure-reducing throttle between high-pressure fuel in fuel chamber/line and lower pressure fuel in valve needle actuator area
EP1511932B1 (en) 2002-04-04 2006-11-29 Siemens Aktiengesellschaft Injection valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324905A1 (en) * 1988-01-21 1989-07-26 Toyota Jidosha Kabushiki Kaisha A fuel injector for an engine
US5031841A (en) * 1989-02-28 1991-07-16 Volkswagen Ag Metering valve, particularly fuel injection valve
DE4306072A1 (en) * 1993-02-26 1994-09-08 Siemens Ag Device for opening and closing a passage opening in a housing
DE4325904A1 (en) * 1993-08-02 1995-02-09 Daimler Benz Ag Fuel injection system provided for a diesel internal combustion engine with a high-pressure pump delivering the fuel into a common supply line (common rail) for all injection nozzles
DE4442764A1 (en) * 1994-12-01 1996-06-05 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19534445A1 (en) * 1995-09-16 1997-03-20 Man Nutzfahrzeuge Ag Fuel injection valve e.g. for IC engine of commercial vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19500706C2 (en) * 1995-01-12 2003-09-25 Bosch Gmbh Robert Metering valve for dosing liquids or gases

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324905A1 (en) * 1988-01-21 1989-07-26 Toyota Jidosha Kabushiki Kaisha A fuel injector for an engine
US5031841A (en) * 1989-02-28 1991-07-16 Volkswagen Ag Metering valve, particularly fuel injection valve
DE4306072A1 (en) * 1993-02-26 1994-09-08 Siemens Ag Device for opening and closing a passage opening in a housing
DE4325904A1 (en) * 1993-08-02 1995-02-09 Daimler Benz Ag Fuel injection system provided for a diesel internal combustion engine with a high-pressure pump delivering the fuel into a common supply line (common rail) for all injection nozzles
DE4442764A1 (en) * 1994-12-01 1996-06-05 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE19534445A1 (en) * 1995-09-16 1997-03-20 Man Nutzfahrzeuge Ag Fuel injection valve e.g. for IC engine of commercial vehicle

Also Published As

Publication number Publication date
DE19716226A1 (en) 1998-10-29
DE19716226C2 (en) 1999-04-22
EP0872636A2 (en) 1998-10-21

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