EP2177747A1 - Injection valve and method for its manufacturing - Google Patents

Injection valve and method for its manufacturing Download PDF

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Publication number
EP2177747A1
EP2177747A1 EP08018063A EP08018063A EP2177747A1 EP 2177747 A1 EP2177747 A1 EP 2177747A1 EP 08018063 A EP08018063 A EP 08018063A EP 08018063 A EP08018063 A EP 08018063A EP 2177747 A1 EP2177747 A1 EP 2177747A1
Authority
EP
European Patent Office
Prior art keywords
module
fluid
actuator
housing
cavity
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Withdrawn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
EP08018063A
Other languages
German (de)
English (en)
French (fr)
Inventor
Paolo Bertini
Massimiliano Cipriani
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP08018063A priority Critical patent/EP2177747A1/en
Priority to US12/577,390 priority patent/US20100090035A1/en
Priority to CN200910206385A priority patent/CN101725444A/zh
Publication of EP2177747A1 publication Critical patent/EP2177747A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making

Definitions

  • the invention relates to an injection valve and its manufacturing.
  • Injection valves are in widespread use, in particular for internal combustion engines where they may be arranged in order to dose the fluid into an intake manifold of the internal combustion engine or directly into a combustion chamber of a cylinder of the internal combustion engine.
  • injection valves are manufactured in various forms in order to satisfy the various needs for the various combustion engines. Therefore, for example, their length, their diameter and also various elements of the injection valves being responsible for the way the fluid is dosed may vary in a wide range.
  • injection valves may accommodate an actuator for actuating a needle of the injection valve, which may, for example, be an electromagnetic actuator.
  • the object of the invention is to provide an injection valve and a method for manufacturing the injection valve which facilitates a reliable and precise function.
  • the invention is distinguished concerning a first aspect by an injection valve which comprises an actuator module with a cavity and an actuator unit.
  • the injection valve further comprises a fluid module, being disposed at least partially within the cavity of the actuator module and comprising a housing and a valve needle.
  • the valve needle is disposed in the housing and is actuatable by the actuator unit.
  • the valve needle is operable to prevent a fluid injection in a closing position and permit the fluid injection in further positions at a fluid module end.
  • the actuator module is adhered to the fluid module via a metal adhesive, which is arranged between a surface of the housing of the fluid module and a surface of a wall of the cavity of the actuator module.
  • the fluid module end may for example associate to an intake manifold of the internal combustion engine.
  • the injection valve may for example be a low pressure injection valve for dosing gasoline into the intake manifold.
  • the invention is distinguished concerning a second aspect by a method for manufacturing an injection valve, wherein a fluid module with a valve needle and a housing is provided.
  • the valve needle is disposed within the housing and is operable to prevent a fluid injection in a closing position and permit the fluid injection in further positions at a fluid module end.
  • An actuator module with a cavity and an actuator unit to actuate the valve needle is provided.
  • a metal adhesive is at least sectionally applied on a surface of the housing of the fluid module and/or on a surface of a wall of the cavity of the actuator module.
  • the actuator module is put over the fluid module in such a way, that the fluid module is disposed at least partially within the cavity of the actuator module.
  • the metal adhesive is in contact with the surface of the housing of the fluid module and the surface of the wall of the cavity of the actuator module. Afterwards the metal adhesive is hardened.
  • the metal adhesive is arranged or applied on an area of the surface of the housing of the fluid module and/or on an area of the surface of the wall of the cavity of the actuator module which is associated to the smallest gap between the housing of the fluid module and the wall of the actuator module. This contributes to efficiently prevent the permeation path of moisture.
  • the metal adhesive is arranged or applied on an area of the surface of the housing of the fluid module and/or on an area of the surface of the wall of the cavity of the actuator module which is located between the actuator unit of the actuator module and the fluid module end. This contributes to prevent the permeation of moisture to the actuator unit. By this a corrosion of the actuator unit can be avoided. Furthermore the permeation path going from the fluid module end to an opposite end of the fluid module can be stopped.
  • the actuator module comprises an electrical connector.
  • the electrical connector is electrically coupled to the actuator unit.
  • the metal adhesive is arranged or applied on an area of the surface of the housing of the fluid module and/or on an area of the surface of the wall of the cavity of the actuator module which is located between the electrical connector and the fluid module end. This contributes to prevent the permeation of the moisture to the electrical connector. Furthermore this contributes to stop the permeation path going from the fluid module end to the opposite end of the fluid module.
  • An injection valve 18 ( figure 1 ), that is in particular suitable for dosing fuel into an intake manifold, comprises a fluid module 2 and an actuator module 4.
  • the fluid module 2 comprises a housing 24 and a valve needle 8.
  • the valve needle 8 is disposed within the housing 24 and is operable to prevent a fluid injection into the intake manifold in a closing position and permit the fluid injection into the intake manifold in further positions.
  • a first fluid module end 6 is associated to the intake manifold, where the fluid is dosed into.
  • a second opposite fluid module end 7 may be hydraulically coupled to a fluid rail, in which fluid is reserved under a predetermined pressure.
  • the actuator module 4 comprises a cavity 20 ( figure 2 ) in which the fluid module 2 is at least partially disposed.
  • the actuator module 4 further comprises an actuator unit 14 which is for example a magnetic coil which is operable to magnetically actuate the valve needle 8 to move along a longitudinal axis L of the injection valve 18. Also other accomplishments of the actuator unit 14 are possible.
  • the actuator module 4 comprises an electrical connector 10 which is electrically coupled to the actuator unit 14 to electrically actuate the actuator unit 14.
  • the electrical connector 10 is electrically coupled to the actuator unit 14 via one or more wires, which are routed through an actuator housing of the actuator module 4 to the actuator unit 14.
  • At least the housing 24 of the fluid module 2 and at least the wall of the cavity 20 of the actuator module 4 are preferably made of stainless steel.
  • the injection valve 18 is attached to the intake manifold of for example an internal combustion engine, there can run a permeation path 12 between the wall of the cavity 20 of the actuator module 4 and the housing 24 of the fluid module 2. Additionally the permeation path 12 can run along the routing of the one or more wires which electrically couple the electrical connector 10 to the actuator unit 14.
  • the internal combustion engine comprises boost applications like turbochargers the intake manifold is typically pressurized. By this a permeation of moisture, for example air moisture with gasoline, can arise along the permeation path 12 from the intake manifold to the outside combustion engine environment.
  • Figure 2 depicts the fluid module 2 and the actuator module 4 of the injection valve 18.
  • Figure 2 further depicts a metal adhesive 16 which is applied on a surface of the housing 24 of the fluid module 2.
  • the metal adhesive 16 is applied sectionally on a predetermined area of the surface of the housing 24 of the fluid module 2 which is associated to the first fluid module end 6 of the fluid module 2.
  • the metal adhesive 16 is applied completely around the housing 24 of the fluid module 2.
  • the metal adhesive 16 is at least sectionally applied on an area of a surface of the wall of the cavity 20 of the actuator module 4.
  • the metal adhesive 16 is preferably liquid if it is not hardened and is preferably applied on the particular surface in liquid form.
  • the actuator module 4 After applying the metal adhesive 16 the actuator module 4 is put over the fluid module 2, whereas the metal adhesive 16 is in contact with the surface of the housing of the fluid module 2 and the surface of the wall of the cavity 20 of the actuator module 4. During this step the metal adhesive 16 is still liquid. After putting the actuator module 4 over the fluid module 2, the metal adhesive is hardened for a predetermined period of time, for example 5 min.
  • the metal adhesive 16 is preferably based on acrylate and is a single component metal adhesive. This metal adhesive 16 hardens if it is hermetically sealed and ensures a high tightness if hardened. The metal adhesive 16 is robust against movements between the fluid module 2 and the actuator module 4 for example due to vibrations or thermal expansions.
  • the metal adhesive may be for example LOCTITE® 648TM.
  • the permeation path 12 between the fluid module 2 and the actuator module 4 is at least stopped at the point where the metal adhesive 16 is arranged.
  • the metal adhesive 16 is arranged or applied on an area of the surface of the housing 24 of the fluid module 2 and/or on an area of the surface of the wall of the cavity 20 of the actuator module 4 which is located between the actuator unit 14 of the actuator module 4 and the first fluid module end 6. This stops the permeation path 12 before the moisture reaches the actuator unit 14 of the actuator module 4. By this a corrosion of the actuator unit 14 can be avoided.
  • the metal adhesive 16 is arranged or applied on an area of the surface of the housing 24 fluid module 2 and/or on an area of the surface of the wall of the cavity 20 of the actuator module 4 which is located between the electrical connector 10 and the first fluid module end 6 of the fluid module 2.
  • the fluid permeation path 12 is at least stopped before it runs along the routing of the one or more wires of the electrical connector 10 to the outside combustion engine environment.
  • the use of the metal adhesive 16 contributes to prevent the permeation of moisture between the fluid module 2 and the actuator module 4 may be combined with other facilities to contribute to prevent the permeation of moisture, for example the use of a sealing ring between the first fluid module end 6 and the actuator unit 14. Basically the use of the metal adhesive 16 is sufficient to prevent the permeation path 12 between the fluid module 2 and the actuator module 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP08018063A 2008-10-15 2008-10-15 Injection valve and method for its manufacturing Withdrawn EP2177747A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08018063A EP2177747A1 (en) 2008-10-15 2008-10-15 Injection valve and method for its manufacturing
US12/577,390 US20100090035A1 (en) 2008-10-15 2009-10-12 Injection valve and method for its manufacturing
CN200910206385A CN101725444A (zh) 2008-10-15 2009-10-15 喷射阀及其制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08018063A EP2177747A1 (en) 2008-10-15 2008-10-15 Injection valve and method for its manufacturing

Publications (1)

Publication Number Publication Date
EP2177747A1 true EP2177747A1 (en) 2010-04-21

Family

ID=40404116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018063A Withdrawn EP2177747A1 (en) 2008-10-15 2008-10-15 Injection valve and method for its manufacturing

Country Status (3)

Country Link
US (1) US20100090035A1 (zh)
EP (1) EP2177747A1 (zh)
CN (1) CN101725444A (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10022744B2 (en) * 2015-05-22 2018-07-17 Nordson Corporation Piezoelectric jetting system with quick release jetting valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712591A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils
WO2003016707A1 (de) * 2001-08-08 2003-02-27 Siemens Aktiengesellschaft Dosiervorrichtung
US20060076437A1 (en) * 2004-07-30 2006-04-13 Michael Dallmeyer Deep pocket seat assembly in modular fuel injector having a lift setting assembly for a working gap and methods
DE102004058803A1 (de) * 2004-12-07 2006-06-08 Robert Bosch Gmbh Einspritzventil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643359A (en) * 1985-03-19 1987-02-17 Allied Corporation Mini injector valve
US6676044B2 (en) * 2000-04-07 2004-01-13 Siemens Automotive Corporation Modular fuel injector and method of assembling the modular fuel injector
WO2005010474A2 (en) * 2003-07-18 2005-02-03 Chemimage Corporation Method and apparatus for multiwavelength imaging spectrometer
US7219847B2 (en) * 2003-12-19 2007-05-22 Siemens Vdo Automotive Corporation Fuel injector with a metering assembly with a polymeric support member and an orifice disk positioned at a terminal end of the polymeric housing
US20090224079A1 (en) * 2008-03-04 2009-09-10 Caterpillar Inc. Fuel injector, valve body remanufacturing process and machine component manufacturing method
CN101280798A (zh) * 2008-05-27 2008-10-08 中国船舶重工集团公司第七二五研究所 一种缠绕成型复合材料锥管各节之间的连接方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19712591A1 (de) * 1997-03-26 1998-10-01 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung sowie Verwendung eines Brennstoffeinspritzventils
WO2003016707A1 (de) * 2001-08-08 2003-02-27 Siemens Aktiengesellschaft Dosiervorrichtung
US20060076437A1 (en) * 2004-07-30 2006-04-13 Michael Dallmeyer Deep pocket seat assembly in modular fuel injector having a lift setting assembly for a working gap and methods
DE102004058803A1 (de) * 2004-12-07 2006-06-08 Robert Bosch Gmbh Einspritzventil

Also Published As

Publication number Publication date
US20100090035A1 (en) 2010-04-15
CN101725444A (zh) 2010-06-09

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