EP2412965A3 - Fuel injector valve - Google Patents

Fuel injector valve Download PDF

Info

Publication number
EP2412965A3
EP2412965A3 EP11170708.9A EP11170708A EP2412965A3 EP 2412965 A3 EP2412965 A3 EP 2412965A3 EP 11170708 A EP11170708 A EP 11170708A EP 2412965 A3 EP2412965 A3 EP 2412965A3
Authority
EP
European Patent Office
Prior art keywords
valve
chamber
control
pin
valve pin
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Withdrawn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
EP11170708.9A
Other languages
German (de)
French (fr)
Other versions
EP2412965A2 (en
Inventor
Bernd Streicher
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 EP2412965A2 publication Critical patent/EP2412965A2/en
Publication of EP2412965A3 publication Critical patent/EP2412965A3/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Withdrawn legal-status Critical Current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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/0047—Four-way valves or valves with more than four ways
    • 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
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
    • 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
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0077—Valve seat details

Landscapes

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

Abstract

Ein Brennstoffeinspritzventil (1), das insbesondere als Injektor für
Brennstoffeinspritzanlagen von luftverdichtenden, selbstzündenden Brennkraftmaschinen dient, umfasst ein Steuerventil (30) und einen Steuerraum (27), wobei der Steuerraum (27) über eine Ablaufbohrung (34) mit einem Ventilraum (31) des Steuerventils (30) verbunden ist, wobei das Steuerventil (30) einen Ventilbolzen (38) und ein in dem Ventilraum (31) angeordnetes Federelement (45) aufweist. Hierbei weist der Ventilbolzen (38) einen Ventilkörper (39) auf, der mit einer Ventilsitzfläche (40) zu einem Dichtsitz (41) zusammen wirkt, wobei über den Dichtsitz (41) ein Brennstofffluss aus dem Ventilraum (31) steuerbar ist. Ferner ist eine Zwischenplatte (8) vorgesehen, die eine Führungsbohrung (51) aufweist. Der Ventilbolzen (38) ist abschnittsweise in der Führungsbohrung (51) geführt. Hierbei begrenzt eine Seite (12) der Zwischenplatte (8) den Ventilraum (31). Hierdurch ist eine zuverlässige Führung des Ventilbolzens (38) mit dem Ventilkörper (39) gewährleistet, so dass insbesondere ein Verkippen des Ventilbolzens (38) und somit eine auftretende Leckage verhindert sind.

Figure imgaf001
A fuel injection valve (1), in particular as an injector for
Fuel injection systems of air-compressing, self-igniting internal combustion engines, comprising a control valve (30) and a control chamber (27), wherein the control chamber (27) via a drain bore (34) with a valve chamber (31) of the control valve (30) is connected, wherein the control valve (30) has a valve pin (38) and in the valve chamber (31) arranged spring element (45). In this case, the valve pin (38) on a valve body (39) which cooperates with a valve seat surface (40) to a sealing seat (41), wherein via the sealing seat (41), a fuel flow from the valve chamber (31) is controllable. Further, an intermediate plate (8) is provided which has a guide bore (51). The valve pin (38) is guided in sections in the guide bore (51). In this case, one side (12) of the intermediate plate (8) limits the valve space (31). In this way, a reliable guidance of the valve pin (38) with the valve body (39) is ensured, so that in particular a tilting of the valve pin (38) and thus an occurring leakage are prevented.
Figure imgaf001
EP11170708.9A 2010-07-27 2011-06-21 Fuel injector valve Withdrawn EP2412965A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010038451 DE102010038451A1 (en) 2010-07-27 2010-07-27 Fuel injector

Publications (2)

Publication Number Publication Date
EP2412965A2 EP2412965A2 (en) 2012-02-01
EP2412965A3 true EP2412965A3 (en) 2014-05-07

Family

ID=44864919

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11170708.9A Withdrawn EP2412965A3 (en) 2010-07-27 2011-06-21 Fuel injector valve

Country Status (2)

Country Link
EP (1) EP2412965A3 (en)
DE (1) DE102010038451A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015220056A1 (en) * 2015-10-15 2017-04-20 Continental Automotive Gmbh piezoinjector
CN106762289A (en) * 2017-01-18 2017-05-31 哈尔滨工程大学 Pressure accumulation orifice-plate type electric-controlled fuel injector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999360A1 (en) * 1998-11-05 2000-05-10 Siemens Aktiengesellschaft Fluid metering control valve
DE102008001330A1 (en) * 2008-04-23 2009-10-29 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102008040170A1 (en) * 2008-07-04 2010-01-07 Robert Bosch Gmbh Fuel injection valve, particularly injector for fuel injection system of air-compression, self-igniting internal combustion engine, has actuator and nozzle needle, where nozzle needle is actuated by control valve of actuator
EP2275667A1 (en) * 2009-07-15 2011-01-19 Robert Bosch GmbH Fuel injection valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10353169A1 (en) 2003-11-14 2005-06-16 Robert Bosch Gmbh Injector for injecting fuel into combustion chambers of internal combustion engines, in particular piezo-controlled common rail injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0999360A1 (en) * 1998-11-05 2000-05-10 Siemens Aktiengesellschaft Fluid metering control valve
DE102008001330A1 (en) * 2008-04-23 2009-10-29 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
DE102008040170A1 (en) * 2008-07-04 2010-01-07 Robert Bosch Gmbh Fuel injection valve, particularly injector for fuel injection system of air-compression, self-igniting internal combustion engine, has actuator and nozzle needle, where nozzle needle is actuated by control valve of actuator
EP2275667A1 (en) * 2009-07-15 2011-01-19 Robert Bosch GmbH Fuel injection valve

Also Published As

Publication number Publication date
DE102010038451A1 (en) 2012-02-02
EP2412965A2 (en) 2012-02-01

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