WO2000079122A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2000079122A1 WO2000079122A1 PCT/DE2000/000494 DE0000494W WO0079122A1 WO 2000079122 A1 WO2000079122 A1 WO 2000079122A1 DE 0000494 W DE0000494 W DE 0000494W WO 0079122 A1 WO0079122 A1 WO 0079122A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve seat
- seat body
- valve
- fuel injection
- coating
- 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
- F02M61/18—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
- 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
- F02M51/0682—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 the body being hollow and its interior communicating with the 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
- 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
-
- 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
-
- 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
- Y10T29/49405—Valve or choke making
- Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
Definitions
- the invention is based on a fuel injection valve according to the preamble of independent claim 1 or according to the preamble of independent claim 7.
- Valve seat surface of a valve seat body cooperates.
- a spray orifice plate is firmly connected by means of a weld seam.
- This valve seat part consisting of an orifice plate and valve seat body, is tightly fastened in a valve seat support.
- the fixed connection between the valve seat part and the valve seat support takes place at a holding edge of the spray-perforated disk, which is under radial tension, with a circumferential weld seam.
- a fuel injector is already known from DE-PS 41 25 155, in which at least one spray hole is already provided in the valve seat body.
- the cylindrical valve seat body is therefore not permanently connected to the valve seat support via a spray orifice plate, but directly on its outer circumference via a circumferential weld seam.
- an electromagnetically actuated fuel injection valve which, among other things, has a non-magnetic thin-walled sleeve as a connecting part between a core and a valve seat body. With its two axial ends, the sleeve is firmly connected to the core and to the valve seat body, so that the sleeve serves as a valve seat support for the valve seat body.
- the core and the valve seat body are designed with an outer diameter such that they extend into the sleeve at the two ends, so that the sleeve completely surrounds the two components core and valve seat body in these protruding areas.
- the fixed connections of the sleeve to the core and the valve seat body are, for. B. achieved by pressing. There is a risk that the connection area will not remain completely hydraulically sealed after being pressed in or over the operating period of the injection valve.
- the fuel injection valves according to the invention with the characterizing features of claim 1 and claim 7 have the advantage of a simple and inexpensive solution to achieve complete hydraulic tightness between a valve seat body and a valve seat body receiving the valve seat body.
- FIG. 1 shows a known fuel injector, shown in part
- FIG. 2 shows two exemplary embodiments, one in one
- valve seat body to be fastened in a valve seat carrier.
- FIG. 1 partially shows an already known valve in the form of an injection valve for fuel injection systems of mixed-compression spark-ignition internal combustion engines.
- the injection valve has a tubular valve seat support 1, in which a longitudinal opening 3 is formed concentrically with a valve longitudinal axis 2.
- a longitudinal opening 3 is formed concentrically with a valve longitudinal axis 2.
- tubular valve needle 5 arranged at its downstream end 6 with a spherical Valve closing body 7, on the circumference of which, for example, five flats 8 are provided, is connected.
- the injection valve is actuated in a known manner, for example electromagnetically.
- piezoelectric or magnetostrictive actuators are also conceivable as excitation elements.
- An indicated electromagnetic circuit with a magnet coil 10, an armature 11 and a core 12 is used for the axial movement of the valve needle 5 and thus for opening against the spring force of a return spring (not shown) or closing the injection valve.
- the armature 11 is facing away from the valve closing body 7 End of the valve needle 5 by z.
- Magnetic coil 10 surrounds the core 12, which represents the end of an inlet connector (not shown in more detail) which is enclosed by the magnetic coil 10 and which serves to supply the fuel to be metered by means of the valve.
- a guide opening 15 of a valve seat body 16 is used to guide the valve closing body 7 during the axial movement.
- the valve opening extends concentrically to the longitudinal axis 2 of the valve
- valve seat body 16 Longitudinal opening 3 of the cylindrical valve seat body 16 tightly mounted by welding.
- the circumference of the valve seat body 16 has a slightly smaller diameter than the longitudinal opening 3 of the valve seat carrier 1. At its one, the
- Valve closing body 7 facing away from the lower end face 17, the valve seat body 16 is concentrically and firmly connected to a base part 20 of, for example, a cup-shaped spray nozzle disk 21.
- the connection of the valve seat body 16 and the spray plate 21 is made by a circumferential and sealed, for. B. by means of a laser-formed first weld seam 22.
- This type of assembly avoids the risk of undesired deformation of the base part 20 in its central region 24, in which there are at least one, for example four, spray openings 25 formed by eroding or punching.
- a circumferential holding edge 26 which extends in the axial direction away from the valve seat body 16 and is conically bent outwards up to its end 27.
- the holding edge 26 exerts a radial spring action on the wall of the longitudinal opening 3.
- valve seat part consisting of valve seat body 16 and cup-shaped spray orifice disk 21 into the longitudinal opening 3 determines the size of the stroke of the valve needle 5, since the one end position of the valve needle 5 when the magnet coil 10 is not excited due to the valve closing body 7 resting against one
- Valve seat surface 29 of the valve seat body 16 is fixed.
- the other end position of the valve needle 5 is determined when the solenoid 10 is excited, for example by the armature 11 resting on the core 12. The way between these two end positions of the valve needle 5 thus represent the stroke.
- the spherical valve closing body 7 interacts with the valve seat surface 29 of the valve seat body 16 which tapers in the shape of a truncated cone, which is formed in the axial direction between the guide opening 15 and the lower end face 17 of the valve seat body 16.
- the diameter of the guide opening 15 is designed such that the spherical valve closing body 7 projects through the guide opening 15 outside of its flattened portions 8 with a small radial distance.
- FIGS. 2 and 3 show several exemplary embodiments of valve seat bodies 16 to be fastened in a valve seat support 1.
- the valve seat support 1 and valve seat body 16 shown in FIGS. 2 and 3 are designed in a slightly different manner from the components shown in FIG. 1 in order to make various embodiments clear.
- the valve seat support 1 according to FIGS. 2 and 3 is sleeve-shaped with the longitudinal opening 3.
- Such a thin-walled valve seat support 1 can, for example, be at least partially surrounded by a plastic coating, not shown.
- the valve seat support 1 has been formed, for example, by deep drawing, the material being a non-magnetic material, for example a rust-proof stainless steel is used. Another difference from the valve seat support 1 shown in FIG.
- valve seat support 1 of FIGS. 2 and 3 comprises a jacket section 39 and a base section 40, the base section 40 forming the downstream end of the valve seat support 1.
- the longitudinal opening 3 of the valve seat carrier 1 continues in the bottom section 40 as an outlet opening 41.
- the valve seat body 16 shown in FIGS. 2 and 3 is distinguished by the fact that it has a recess 43 downstream of the valve seat surface 29 into which e.g. a spray plate 21 can be used.
- a spray plate 21 e.g. a spray plate 21
- spray perforated disks 21 made of sheet metal, silicon or with a metallic, galvanically produced multilayer structure, etc. be used.
- the valve seat body 16 With its lower end face 17, the valve seat body 16 bears against the bottom section 40 of the valve seat carrier 1 in an edge region surrounding the outlet opening 41.
- valve seat body 16 and valve seat support 1 in order to achieve hydraulic tightness.
- the assembly of these two components 1, 16 is simplified by coating a lateral surface 44 of the cylindrical valve seat body 16 in whole or in part, so that a weld seam can be dispensed with.
- the valve seat body 16 is usually made of a Cr steel. According to the invention, a thin coating 45 is applied to the lateral surface 44 of the valve seat body 16 before it is installed in the valve seat carrier 1. The coating 45 is with a specifically applied in such a thickness that a press connection is created in the pairing of valve seat body 16 / valve seat support 1. When the valve seat body 16 is pressed into the valve seat support 1, the relatively soft coating material deforms in the
- Suitable coating materials are, for example, metals, such as copper, tin or nickel, or plastics, such as PTFE, which is known under the registered name Teflon®.
- the coating is carried out either by galvanic deposition, by spraying technology or by vulcanization.
- the coating 45 is applied to the outer lateral surface 44 of the easy-to-use valve seat body 16, the production of the coating 45 is simple and reliable. It is also an easy one
- Coating thickness is not to scale. It is made clear on the left-hand side that the coating 45 can only be carried out in an axial partial region of the lateral surface 44; the right side, on the other hand, shows a coating 45 which extends over the entire axial extent of the lateral surface 44 of the
- Valve seat body 16 extends.
- Figure 3 illustrates an embodiment in which a circumferential groove 48 is provided on the lateral surface 44, which is slightly recessed to the remaining lateral surface 44.
- This groove 48 is with a coating 45 made of metal or plastic. Ultimately, this is again a partially coated lateral surface 44.
- the coating 45 can also be achieved by applying an adhesive.
- a fuel-resistant, microencapsulated adhesive is used.
- Such an adhesive can e.g. be a liquid capillary gap adhesive.
- the encapsulation of the adhesive is broken open and the adhesive released can harden in the connection area.
- a subsequent hydraulic sealing weld 30 and / or fixing for axial securing is no longer necessary.
- the adhesive is applied, for example, only in an axial partial area of the outer surface 44 of the valve seat body 16, as is e.g. is already indicated on the left in FIG. 2 for the coating 45.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/763,347 US6454188B1 (en) | 1999-06-18 | 2000-02-22 | Fuel injection valve |
EP00909055A EP1108134B1 (de) | 1999-06-18 | 2000-02-22 | Brennstoffeinspritzventil |
DE50009101T DE50009101D1 (de) | 1999-06-18 | 2000-02-22 | Brennstoffeinspritzventil |
JP2001505448A JP2003502575A (ja) | 1999-06-18 | 2000-02-22 | 燃料噴射弁 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19927898.9 | 1999-06-18 | ||
DE19927898A DE19927898A1 (de) | 1999-06-18 | 1999-06-18 | Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000079122A1 true WO2000079122A1 (de) | 2000-12-28 |
Family
ID=7911708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/000494 WO2000079122A1 (de) | 1999-06-18 | 2000-02-22 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US6454188B1 (de) |
EP (1) | EP1108134B1 (de) |
JP (1) | JP2003502575A (de) |
KR (1) | KR100691204B1 (de) |
CN (1) | CN1133809C (de) |
DE (2) | DE19927898A1 (de) |
WO (1) | WO2000079122A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6422486B1 (en) * | 2000-03-31 | 2002-07-23 | Siemens Automotive Corporation | Armature/needle assembly for a fuel injector and method of manufacturing same |
DE10103933A1 (de) * | 2001-01-30 | 2002-08-14 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
JP2004278521A (ja) * | 2003-02-28 | 2004-10-07 | Denso Corp | 燃料噴射弁およびその噴射量調整方法 |
CN100447464C (zh) * | 2003-10-21 | 2008-12-31 | 精工爱普生株式会社 | 止回阀及具有止回阀的泵 |
US7306168B2 (en) * | 2003-12-19 | 2007-12-11 | Siemens Vdo Automotive Corporation | Polymeric bodied fuel injector with a seat and elastomeric seal molded to a polymeric support member |
US7334746B2 (en) * | 2004-03-08 | 2008-02-26 | Continental Automotive Systems Us, Inc. | Seat-lower guide combination |
DE102005061424A1 (de) * | 2005-12-22 | 2007-07-05 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102006011000B3 (de) | 2006-03-09 | 2007-10-25 | Siemens Ag | Pressverband |
EP1918574A1 (de) * | 2006-11-02 | 2008-05-07 | Siemens Aktiengesellschaft | Einspritzventil und Verfahren zum Montieren des Einsptritzventils |
ATE488677T1 (de) | 2007-07-09 | 2010-12-15 | Delphi Technologies Holding | Dosierungssystem für reagensmittel |
DE102007051584A1 (de) | 2007-10-29 | 2009-04-30 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
DE102007051585A1 (de) | 2007-10-29 | 2009-04-30 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
DE102008040822A1 (de) | 2008-07-29 | 2010-02-04 | Robert Bosch Gmbh | Einspritzventil zum Zerstäuben von Fluid |
DE102008044242A1 (de) | 2008-12-01 | 2010-06-02 | Robert Bosch Gmbh | Brennkraftmaschine |
DE102008044243A1 (de) | 2008-12-01 | 2010-06-02 | Robert Bosch Gmbh | Brennkraftmaschine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711400A (en) * | 1985-02-07 | 1987-12-08 | Alfa Romeo Auto S.P.A. | Electromagnetic injector for an I.C. engine |
US4946107A (en) | 1988-11-29 | 1990-08-07 | Pacer Industries, Inc. | Electromagnetic fuel injection valve |
DE4125155C1 (de) | 1991-07-30 | 1993-02-04 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
US5193747A (en) * | 1989-08-19 | 1993-03-16 | Robert Bosch Gmbh | Protective cap for a fuel injection valve |
DE4408875A1 (de) | 1994-03-16 | 1995-09-21 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19727414A1 (de) * | 1997-06-27 | 1999-01-07 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Magnetspule für ein Ventil und Ventil mit einer Magnetspule |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4134572A (en) * | 1977-02-16 | 1979-01-16 | Schmidt Alfred C | Adjustable flow metering orifice |
US4830558A (en) * | 1978-08-24 | 1989-05-16 | Theodore J. Sweeney & Co. | Adhesively securable fastener |
US4741352A (en) * | 1985-05-09 | 1988-05-03 | General Motors Corporation | Adhesive for high temperature thread locking in hydraulic system |
US4783009A (en) * | 1987-04-27 | 1988-11-08 | Brunswick Corporation | Calibration adjustment of electromagnetic fuel injectors |
US4790055A (en) * | 1987-06-15 | 1988-12-13 | Stanadyne, Inc. | Method of assembling a fuel nozzle assembly |
US5649358A (en) * | 1993-07-20 | 1997-07-22 | Yamaha Hatsudoki Kabushiki Kaisha | Method of making a valve seat |
DE19547406B4 (de) * | 1995-12-19 | 2007-10-31 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE19639117A1 (de) * | 1996-09-24 | 1998-03-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
1999
- 1999-06-18 DE DE19927898A patent/DE19927898A1/de not_active Withdrawn
-
2000
- 2000-02-22 KR KR1020017001682A patent/KR100691204B1/ko not_active IP Right Cessation
- 2000-02-22 CN CNB008011346A patent/CN1133809C/zh not_active Expired - Fee Related
- 2000-02-22 WO PCT/DE2000/000494 patent/WO2000079122A1/de active IP Right Grant
- 2000-02-22 DE DE50009101T patent/DE50009101D1/de not_active Expired - Lifetime
- 2000-02-22 US US09/763,347 patent/US6454188B1/en not_active Expired - Fee Related
- 2000-02-22 EP EP00909055A patent/EP1108134B1/de not_active Expired - Lifetime
- 2000-02-22 JP JP2001505448A patent/JP2003502575A/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4711400A (en) * | 1985-02-07 | 1987-12-08 | Alfa Romeo Auto S.P.A. | Electromagnetic injector for an I.C. engine |
US4946107A (en) | 1988-11-29 | 1990-08-07 | Pacer Industries, Inc. | Electromagnetic fuel injection valve |
US5193747A (en) * | 1989-08-19 | 1993-03-16 | Robert Bosch Gmbh | Protective cap for a fuel injection valve |
DE4125155C1 (de) | 1991-07-30 | 1993-02-04 | Robert Bosch Gmbh, 7000 Stuttgart, De | |
DE4408875A1 (de) | 1994-03-16 | 1995-09-21 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19727414A1 (de) * | 1997-06-27 | 1999-01-07 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Magnetspule für ein Ventil und Ventil mit einer Magnetspule |
Also Published As
Publication number | Publication date |
---|---|
KR100691204B1 (ko) | 2007-03-09 |
CN1313931A (zh) | 2001-09-19 |
EP1108134A1 (de) | 2001-06-20 |
EP1108134B1 (de) | 2004-12-29 |
KR20010072346A (ko) | 2001-07-31 |
CN1133809C (zh) | 2004-01-07 |
US6454188B1 (en) | 2002-09-24 |
DE19927898A1 (de) | 2000-12-21 |
JP2003502575A (ja) | 2003-01-21 |
DE50009101D1 (de) | 2005-02-03 |
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