WO2019129412A1 - Ventil zum zumessen eines fluids, insbesondere brennstoffeinspritzventil - Google Patents
Ventil zum zumessen eines fluids, insbesondere brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2019129412A1 WO2019129412A1 PCT/EP2018/079545 EP2018079545W WO2019129412A1 WO 2019129412 A1 WO2019129412 A1 WO 2019129412A1 EP 2018079545 W EP2018079545 W EP 2018079545W WO 2019129412 A1 WO2019129412 A1 WO 2019129412A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve seat
- valve
- sealing element
- seat body
- fuel injection
- Prior art date
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
- F02M61/166—Selection of particular materials
-
- 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
-
- 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
- F02M55/004—Joints; Sealings
-
- 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
-
- 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
- F02M61/1853—Orifice plates
-
- 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
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
Definitions
- Valve for metering a fluid in particular fuel injection valve
- the invention is based on a valve for metering a fluid
- Fuel injection device shown in which a built-in bore in a cylinder head of an internal combustion engine fuel injection valve is provided.
- the fuel injector is particularly suitable for use in fuel injection systems of mixture-compression spark-ignition internal combustion engines.
- the valve has a valve housing which i.a. a valve seat carrier accommodating a valve seat body and fixedly connected to the valve seat body. The two components are firmly connected to each other by means of a weld.
- the valve seat body is in the mounted state on an inner stop shoulder of the valve seat carrier, whereby a radial annular gap remains on the outer circumference of the two components between them
- valve according to the invention for metering a fluid with the
- Characteristic features of claim 1 has the advantage of improved sealing of valve housing components at its discharge-side valve end, the when the valve is designed as a direct-injection fuel injection valve, it is influenced by the aggressive combustion chamber atmosphere because of its proximity to the combustion chamber. According to the invention is in an annular gap between a
- Valve seat carrier and a valve seat body introduced a plastically deformable sealing element.
- the compressed sealing element ensures that moisture and other corrosive media can not penetrate into the annular gap on the discharge-side valve end.
- it is advantageously ensured that the quality of the weld in the axial overlap region of valve seat carrier and valve seat body is not impaired. Any risks with regard to corrosion near the weld and resulting component damage and changes in the installation position of the valve seat body are excluded.
- Valve seat support such a pressing or biasing force F applied in the axial direction, which plastically deforms the sealing element and pressed in the annular gap that its axial extent is reduced, but a
- Fig. 1 shows a schematic section through a fuel injection valve in a known embodiment having a spray-discharge openings
- Valve seat body at the downstream end of the valve
- FIG. 2 shows the downstream end of the valve as a section II of Fig. 1 in an enlarged view
- 3 shows a first embodiment according to the invention of a valve end in a cutaway view analogous to FIG. 2 with a first sealing element between the valve seat body and the valve seat carrier
- FIG. 3 shows a first embodiment according to the invention of a valve end in a cutaway view analogous to FIG. 2 with a first sealing element between the valve seat body and the valve seat carrier
- FIGS. 6A and 4B show a fourth embodiment according to the invention of a sealing element between the valve seat body and the valve seat carrier.
- a known example of a fuel injection valve 1 shown in FIG. 1 is in the form of a fuel injection valve 1 for fuel injection systems of mixture-compression spark-ignition internal combustion engines.
- the fuel injection valve 1 is particularly suitable for the direct injection of fuel into a combustion chamber 25, not shown
- the invention is applicable to valves for metering a fluid.
- the fuel injection valve 1 With a downstream end, the fuel injection valve 1 is in a
- a sealing ring 2 in particular Teflon ®, ensures optimum sealing of the
- the fuel injection valve 1 has at its upstream end 3 a
- the fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.
- a decoupling element 24 is inserted, which serves to compensate for manufacturing and assembly tolerances and ensures a lateral force-free storage even with slight misalignment of the fuel injector 1. In addition, this is an optimized noise decoupling.
- the decoupling element 24 is secured, for example, by means of a lock washer 39.
- the valve housing 22 of the fuel injection valve 1 is u.a. through the
- Inlet nozzle 7 but also formed by a nozzle body 10, in which a
- Valve needle 11 is arranged.
- the valve needle 11 is connected to a e.g. spherical valve closing body 12 in operative connection, which cooperates with a arranged on a valve seat body 13 valve seat surface 14 to a sealing seat.
- the fuel injection valve 1 in the exemplary embodiment is an inwardly opening fuel injection valve 1, which has at least one
- the fuel injection valve 1 is ideally designed as a multi-hole injection valve and therefore has between four and thirty
- the drive is e.g. an electromagnetic circuit comprising a magnetic coil 15 as an actuator, which is encapsulated in a coil housing and on a
- Coil carrier is wound, which surrounds an inner pole 16. To that
- Electro-magnetic circuit further includes an armature 17 which is arranged on the valve needle 11. At rest of the fuel injection valve 1, the anchor
- Valve needle 11 associated valve closing body 12 lifts from the
- Valve seat surface 14 from, and the fuel is sprayed through the spray openings 4. If the coil current is turned off, the armature 17 drops after sufficient degradation of the magnetic field by the pressure of the return spring 18 from the inner pole 16, whereby the valve needle 11 moves against the stroke direction. As a result, the valve closing body 12 is seated on the valve seat surface 14, and the
- Fuel injection valve 1 is closed.
- This embodiment of the fuel injector is a gasoline direct injection system having fuel injectors 1 operated as shown with an electromagnetic actuator, but also with piezoactuators, and e.g. be used in a constant pressure system.
- valve member which also as
- Valve seat carrier can be called, since it receives the valve seat body 13.
- Figure 2 shows the downstream end of the valve as a section II of Fig. 1 in an enlarged view.
- the valve seat carrier 10 and the valve seat body 13 are fixedly connected to each other, usually by means of a weld 30, which in the circumferential direction on the outer periphery of the valve seat carrier 10, for example. is generated with a laser.
- the valve seat body 13 has on its side opposite the ejection openings 4 side an annular collar 31, such a
- Outer diameter has that fit into an inner opening of the
- Valve seat carrier 10 is inserted.
- the weld 30 is exactly in
- Valve seat carrier 10 set. In a known manner, the valve seat body 13 is inserted so far into the valve seat carrier 10 until the annular collar 31 at a
- Stop shoulder 33 of the valve seat carrier 10 abuts.
- the annular collar 31 of the valve seat body 13 is provided with an axial length which is slightly greater than the length of the inner opening of the valve seat carrier 10 of the stop shoulder 33 from in
- valve seat carrier 10 and valve seat body 13 are downstream directions. This avoids that there is a disadvantageous stop the components valve seat carrier 10 and valve seat body 13 at a different location. However, this sizing also means that between Valve seat carrier 10 and valve seat body 13 in the outer circumferential region an annular gap 35 is formed.
- annular gap 35 at the ejection-side valve end may have the disadvantage that, in addition to the aggressive combustion chamber atmosphere, moisture and other corrosive media can penetrate, leading in the extreme case to corrosion on the components valve seat carrier 10 and valve seat body 13 in the vicinity of the annular gap and the quality of the weld 30 in the axial overlap area of
- Valve seat carrier 10 and valve seat body 13 may affect. This would adversely and undesirably affect the quality of the fixed connection of valve seat carrier 10 and valve seat body 13 and possibly leave the valve seat body 13 in the exact correct mounting position.
- a deformable sealing element 45 is introduced into the annular gap 35 between the valve seat carrier 10 and the valve seat body 13.
- FIG. 3 shows a first embodiment of the invention
- the valve seat body 13 is thus sealed to the valve seat carrier 10 by an axial seal so that no corrosive medium can reach the radial annular gap 35 or the weld seam 30.
- an annular sealing element 45 with a round cross-section is used.
- Such a round ring may be made of a material such as a corrosion-resistant soft iron (1.4511 or 1.4307 soft annealed), copper, brass, bronze,
- Sealing element 45 is axially plastically deformable during assembly of the valve seat body 13 on the valve seat carrier 10. As shown in Figure 3, the originally round sealing element 45 in the installed state has an oval cross section, since the sealing element 45 undergoes a plastic deformation in the axial direction due to an acting on the valve seat body 13 during assembly biasing force F, wherein the material of the sealing element 45th dodges in the radial direction in the annular gap 35 and it comes to this overall "depressed" shape. The plastic deformation of the sealing element 45 provides for a further improvement of Sealing properties of the sealing element 45. Only after the plastic deformation of the sealing element 45, the attachment of the weld 30 takes place.
- the sealing element 45 designed as a round ring should, in the undeformed state, have an approximately equal inner diameter as the outer diameter of the valve seat body 13 in the region of its
- the inner diameter of the sealing element 45 may of course be slightly larger than the outer diameter of the valve seat body 13 in the region of its annular collar 31. Should the transition region to the annular collar 31 on the valve seat body 13 be rounded, it is expedient to the sealing element 45 with a radius provided, which corresponds to the radius of the rounding of the transition area largely.
- FIGS. 4A and 4B a second embodiment according to the invention of a sealing element 45 is shown between the valve seat body 13 and the valve seat carrier 10, wherein in FIG. 4A the sealing element 45 can be seen undeformed prior to axial pressing, while FIG. 4B deforms the sealing element 45 after the axial one Pressing shows.
- the sealing element 45 is e.g. made of a corrosion resistant spring steel, such as 1.4310.
- the sealing element 45 has a flat lying U-profile in cross section. For the axial plastic deformation only small biasing forces F are required here.
- FIGS. 5A and 5B show a third embodiment according to the invention of a sealing element 45 between the valve seat body 13 and the valve seat carrier 10, wherein in FIG. 5A the sealing element 45 can be seen undeformed prior to axial pressing, while FIG. 5B deforms the sealing element 45 after the axial one Pressing shows.
- the sealing element 45 is e.g. made of a corrosion resistant spring steel, such as 1.4310.
- the sealing element 45 has a wave-shaped profile in cross section. For the axial plastic deformation only small preload forces F are necessary here.
- FIGS. 6A and 6B show a fourth embodiment according to the invention of a sealing element 45 between the valve seat body 13 and the valve seat carrier 10
- the sealing element 45 can be seen undeformed before the axial pressing
- FIG. 6B shows the sealing element 45 deformed after the axial pressing.
- the sealing element 45 is, for example, a stamped part with a cross-shaped cross section, in which the axially extending cross knuckles are plastically pushed during axial pressing.
- Other contours for sealing elements 45 as a stamping part are also conceivable.
- valve seat body 13 steel As a typical material for the valve seat body 13 steel can be used.
- the production can therefore be carried out by means of machining (eg turning, grinding, honing), by forming (eg extruding) or by primary forming (eg metal
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880084701.4A CN111527300B (zh) | 2017-12-29 | 2018-10-29 | 用于计量流体的阀、尤其是燃料喷射阀 |
BR112020009012-3A BR112020009012B1 (pt) | 2017-12-29 | 2018-10-29 | Válvula para dosagem de um fluido, especialmente válvula de injeção de combustível |
US16/955,528 US11092125B2 (en) | 2017-12-29 | 2018-10-29 | Valve for metering a fluid, in particular, a fuel injector |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017223866.6 | 2017-12-29 | ||
DE102017223866.6A DE102017223866A1 (de) | 2017-12-29 | 2017-12-29 | Ventil zum Zumessen eines Fluids, insbesondere Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019129412A1 true WO2019129412A1 (de) | 2019-07-04 |
Family
ID=64049241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2018/079545 WO2019129412A1 (de) | 2017-12-29 | 2018-10-29 | Ventil zum zumessen eines fluids, insbesondere brennstoffeinspritzventil |
Country Status (5)
Country | Link |
---|---|
US (1) | US11092125B2 (de) |
CN (1) | CN111527300B (de) |
BR (1) | BR112020009012B1 (de) |
DE (1) | DE102017223866A1 (de) |
WO (1) | WO2019129412A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020084951A (ja) * | 2018-11-30 | 2020-06-04 | 株式会社デンソー | 燃料噴射弁 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4951878A (en) * | 1987-11-16 | 1990-08-28 | Casey Gary L | Pico fuel injector valve |
DE19533290A1 (de) * | 1994-09-09 | 1996-03-14 | Zexel Corp | Kraftstoff-Einspritzventil |
US5755386A (en) * | 1995-12-26 | 1998-05-26 | General Motors Corporation | Fuel injector deep drawn valve guide |
US5785024A (en) * | 1996-08-22 | 1998-07-28 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head device for internal combustion engine |
DE102005052255A1 (de) | 2005-11-02 | 2007-05-03 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102007051585A1 (de) * | 2007-10-29 | 2009-04-30 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19730202A1 (de) * | 1997-07-15 | 1999-01-21 | Bosch Gmbh Robert | Elektromagnetisch betätigbares Ventil |
DE19736682A1 (de) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6015103A (en) * | 1998-06-08 | 2000-01-18 | General Motors Corporation | Filter for fuel injector |
US6629650B2 (en) * | 2001-07-10 | 2003-10-07 | Delphi Technologies, Inc. | Fuel injector with integral damper |
EP1679147A3 (de) * | 2004-12-23 | 2008-01-23 | RS elektronik GmbH | Verfahren, Einrichtung und Hilfsmittel zum elektrischen Pressschweissen |
DE102006021020A1 (de) * | 2006-05-05 | 2007-11-08 | Man Nutzfahrzeuge Ag | Behälter in einem Kraftfahrzeug |
KR101160043B1 (ko) * | 2010-06-23 | 2012-06-25 | 주식회사 케피코 | 연료 분사 밸브 |
CN103384791B (zh) * | 2010-08-06 | 2016-02-17 | 滨特尔水务有限公司 | 在两个金属管之间的管接头及其形成该管接头的方法 |
DE102012005921A1 (de) * | 2012-03-26 | 2013-09-26 | Poppe & Potthoff Gmbh & Co | Verschweißte Baugruppe |
US9366355B2 (en) * | 2012-08-17 | 2016-06-14 | Continental Automotive Systems, Inc. | Sealed armature ball tube assembly |
DE102012112593A1 (de) * | 2012-12-19 | 2014-06-26 | Elringklinger Ag | Dichtring für ein Druckregelventil |
DE102016211451A1 (de) * | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Injektor mit exakter Ausrichtung eines Ventilsitzes |
DE102017218007A1 (de) * | 2017-10-10 | 2019-04-11 | Robert Bosch Gmbh | Entkopplungselement für eine Brennstoffeinspritzvorrichtung |
DE102017218002A1 (de) * | 2017-10-10 | 2019-04-11 | Robert Bosch Gmbh | Entkopplungselement für eine Brennstoffeinspritzvorrichtung |
-
2017
- 2017-12-29 DE DE102017223866.6A patent/DE102017223866A1/de active Pending
-
2018
- 2018-10-29 US US16/955,528 patent/US11092125B2/en active Active
- 2018-10-29 WO PCT/EP2018/079545 patent/WO2019129412A1/de active Application Filing
- 2018-10-29 CN CN201880084701.4A patent/CN111527300B/zh active Active
- 2018-10-29 BR BR112020009012-3A patent/BR112020009012B1/pt active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4951878A (en) * | 1987-11-16 | 1990-08-28 | Casey Gary L | Pico fuel injector valve |
DE19533290A1 (de) * | 1994-09-09 | 1996-03-14 | Zexel Corp | Kraftstoff-Einspritzventil |
US5755386A (en) * | 1995-12-26 | 1998-05-26 | General Motors Corporation | Fuel injector deep drawn valve guide |
US5785024A (en) * | 1996-08-22 | 1998-07-28 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Cylinder head device for internal combustion engine |
DE102005052255A1 (de) | 2005-11-02 | 2007-05-03 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102007051585A1 (de) * | 2007-10-29 | 2009-04-30 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020084951A (ja) * | 2018-11-30 | 2020-06-04 | 株式会社デンソー | 燃料噴射弁 |
JP7167666B2 (ja) | 2018-11-30 | 2022-11-09 | 株式会社デンソー | 燃料噴射弁 |
Also Published As
Publication number | Publication date |
---|---|
US11092125B2 (en) | 2021-08-17 |
BR112020009012A2 (pt) | 2020-10-27 |
DE102017223866A1 (de) | 2019-07-04 |
BR112020009012B1 (pt) | 2023-10-24 |
CN111527300A (zh) | 2020-08-11 |
CN111527300B (zh) | 2022-09-23 |
US20210010448A1 (en) | 2021-01-14 |
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