EP0553310A1 - Brennstoffeinspritzventil. - Google Patents
Brennstoffeinspritzventil.Info
- Publication number
- EP0553310A1 EP0553310A1 EP92911364A EP92911364A EP0553310A1 EP 0553310 A1 EP0553310 A1 EP 0553310A1 EP 92911364 A EP92911364 A EP 92911364A EP 92911364 A EP92911364 A EP 92911364A EP 0553310 A1 EP0553310 A1 EP 0553310A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- valve seat
- valve
- disc
- perforated
- 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.)
- Granted
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
-
- 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
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- a fuel injector has already been proposed in which the perforated disk is attached to the valve seat body by means of a circumferential weld seam.
- the perforated disk must be made relatively thick in order to prevent the perforated disk from lifting due to the prevailing fuel pressure, as a result of which the spray pattern of the sprayed fuel changes in an undesired manner. Due to the relatively large thickness of the perforated disk, there is the disadvantage that the fuel emerging from the spray openings of the perforated disk is not broken up into the finest fuel droplets in the desired manner, ie optimum fuel conditioning is not achieved.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage that a thinner perforated disk can be used compared to the known perforated disks, which leads to an optimal fuel preparation with the finest fuel droplets without a deterioration in the spray pattern of the sprayed fuel jet.
- Advantageous further developments and improvements of the fuel injector specified in the main claim are possible through the measures listed in the subclaims.
- the support disk in a pot shape and to tightly connect its circumferential retaining edge to the seat support in its axial position after the adjustment of the valve seat body, so that this makes it possible to adjust the valve lift and thus the amount of fuel injected.
- the holding edge of the support disk is bent outwards towards its free end and with this free end rests under radial tension on the wall of a longitudinal opening of the seat carrier, so that the valve seat body is held in its axial position during the adjustment process until the desired setting is reached and the retaining edge of the support disk is welded to the wall of the longitudinal opening of the seat support for final fixing.
- the through-opening of the support disk encompasses the area of the perforated disk that is provided with the at least one spray opening and is curved toward the dome in a downstream manner in order to avoid undesired deflection of the perforated disk due to the prevailing fuel pressure.
- the fuel injection valve has a tubular seat support 1, in which a longitudinal opening 3 is formed concentrically with a valve longitudinal axis 2. In the longitudinal opening 3 is a z. B. tubular valve needle 5 is arranged, which is connected at its downstream end 6 with a, for example, spherical valve closing body 7.
- the fuel injector is actuated in a known manner, for example electromagnetically.
- An indicated electromagnetic circuit with a solenoid 10, an armature 11 and a core 12 is used for the axial movement of the valve needle 5 and thus for opening or closing the fuel injector.
- the armature 11 is with the end of the valve needle facing away from the valve closing body 7 5 connected and aligned to the core 12.
- a guide opening 16 of a valve seat body 18 serves to guide the valve closing body 7 during the axial movement.
- the circumference of the valve seat body 18 has a slightly smaller diameter than the diameter of the longitudinal opening 3 of the seat carrier 1.
- a metal perforated disk 22 is arranged concentrically on its one end face 19 facing away from the valve needle 5 on the valve seat body 18 and is firmly connected to it.
- the perforated disk 22 has a thickness of 0.1 mm, for example.
- the metal support disk 26 has a cup-shaped cross-sectional shape and has a thickness of 0.2 mm, for example.
- a circumferential holding edge 28 adjoins a bottom part 27 of the support disk 26 which bears against the end face 25 of the perforated body 22 and extends in the axial direction away from the valve seat body 18 and is conically bent outwards as far as one end 29.
- the holder 29 has at its end 29 a slightly larger diameter than the diameter of the longitudinal opening 3 of the seat carrier 1.
- the connection of the valve seat body 18, perforated disk 22 and support disk 26 is carried out, for example, by a circumferential and dense, e.g. B. first weld seam 24 formed by a laser. For this reason, good weldability must also be ensured in the material selection for the perforated disk 22 and the support disk 26.
- valve seat body 18 with the perforated disk 22 and the support disk 26 attached is pushed into the longitudinal opening 3. Due to the somewhat smaller diameter of the circumference of the valve seat body 18 compared to the longitudinal opening 3 of the seat support 1, there is a radial pressure only between the longitudinal opening 3 and the slightly conical outwardly formed retaining edge 28 of the support disk 26, the retaining edge 28 exerts a radial spring action on the wall of the longitudinal opening 3. As a result, chip formation is avoided when the valve seat body 18 with the perforated disk 22 and the support disk 26 is inserted into the longitudinal opening 3 of the seat carrier 1.
- valve seat body 18 In addition, in the manufacture of the valve seat body 18, it is not necessary to maintain a narrow dimensional tolerance on its circumference, since the valve seat body 18 has a slight play in the radial opening in the longitudinal opening 3 of the seat carrier 1, so that the manufacturing costs compared to one in the Longitudinal opening 3 pressed valve seat body can be significantly reduced.
- the insertion depth of the valve seat body 18 into the longitudinal opening 3 of the seat support 1 determines the presetting of the stroke of the valve needle 5 guided radially through the guide opening 16, since the one end position of the valve needle 5 when the magnet coil 10 is not energized due to the valve closing body 7 resting against a downstream one the valve seat surface 32 of the valve seat body 18 formed in the guide opening 16.
- 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 path between these two end positions represents the stroke of the valve needle 5.
- the holding edge 28 of the support disk 26 is connected to the wall of the longitudinal opening 3, for example by a circumferential and tight second weld 30.
- the second weld 30 is just like the first weld 24 z. B. generated by a laser, so that there is a safe and reliable, easy to produce welding, in which the heating of the parts to be welded together is low.
- valve seat body 18 and perforated disk 22 or support disk 26 and of support disk 26 and seat support 1 is required so that the medium used, for example a fuel, does not pass between the longitudinal opening 3 of the seat support 1 and the circumference of the valve seat body 18 or between the longitudinal opening 3 of the seat support 1 and the holding edge 28 of the support disk 26 can flow directly into an intake line of the internal combustion engine.
- medium used for example a fuel
- the spherical valve closing body 7 interacts with the valve seat surface 32 of the valve seat body 18, which tapers conically in the flow direction, for example, and is formed in the axial direction between the guide opening 16 and the end face 19 of the valve seat body 18, and has a plurality of flats 33 , preferably five, which allow a flow of the medium from the valve interior 35, which is delimited in the radial direction through the longitudinal opening 3 of the seat carrier 1, to the valve seat surface 32, from where the medium in the open state of the valve via a short one formed downstream in the valve seat body 18 Intermediate opening 36 reaches spray openings 37 of perforated disk 22.
- the diameter of the guide opening 16 is designed such that the spherical valve closing body 7 projects into the guide opening 16 with a small radial distance.
- the exact setting of the stroke of the valve needle 5 and thus of the static flow quantity of the medium given off during the stationary opening state of the valve is carried out on the fully assembled fuel injector, ie among other things that the support disk 26 welded to the valve seat body 18 is on its holder edge 28 is welded to the seat support 1.
- the support disc 26 becomes in the area for the exact adjustment of the stroke of the valve needle 5 in the axial direction stretched between the second weld seam 30 and the first weld seam 24 by means of a tool 39 and, if necessary, plastically deformed until the measured actual medium quantity corresponds to the predetermined medium target quantity.
- a protective cap 45 is arranged on the circumference of the seat support 1 at its downstream end and is connected to the circumference of the seat support 1 by means of a latching connection 46.
- the protective cap 45 rests with a first end radial section 47 on an end face 48 of the seat support 1.
- the first radial section 47 of the protective cap 45 is first adjoined by an axially extending parallel section 49 and by a second radial section 50 pointing radially outward.
- a sealing ring 51 is arranged in an annular groove 53, the side surfaces of which, through an end face 54 of the second radial section 50 of the protective cap 45 facing the magnetic coil 10 and through a radially outwardly facing contact surface 55 of the seat support 1 and its groove bottom 57 through the circumference of the seat support 1 are formed.
- the sealing ring 51 is used to seal between the circumference of the fuel injection valve and a valve holder (not shown), for example the intake line of the internal combustion engine.
- the intermediate opening 36 downstream of the valve seat surface 32 of the valve seat body 18 encompasses a central region 60 of the perforated disk 22, in which the at least one spray opening 37 is, but for example four spray openings 37 are formed.
- a through opening 61 is provided in the support disk 26 approximately concentrically to the valve longitudinal axis 2, which likewise encompasses the area 60 of the perforated disk 22 on the opposite side. The fuel sprayed through the spray openings 37 is thus sprayed through the through opening 61 of the support disk 26.
- the area 60 of the perforated disk 22 encompassed by the through opening 61 of the support disk 26 can be curved in the direction of flow such that it has the shape of a spherical cap.
- the first weld 24 has a sufficiently large radial distance from the area 60 of the perforated disk 22 in order to avoid the formation of deformations in the area 60.
- the axial distance between the area 60 of the perforated disk 22 and the lower end of the valve closing body 7 is kept as small as possible in order to form the smallest possible dead volume.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4123692 | 1991-07-17 | ||
DE4123692A DE4123692C2 (de) | 1991-07-17 | 1991-07-17 | Brennstoffeinspritzventil |
PCT/DE1992/000477 WO1993002285A1 (de) | 1991-07-17 | 1992-06-10 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0553310A1 true EP0553310A1 (de) | 1993-08-04 |
EP0553310B1 EP0553310B1 (de) | 1995-09-13 |
Family
ID=6436375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92911364A Expired - Lifetime EP0553310B1 (de) | 1991-07-17 | 1992-06-10 | Brennstoffeinspritzventil |
Country Status (7)
Country | Link |
---|---|
US (1) | US5335864A (de) |
EP (1) | EP0553310B1 (de) |
JP (1) | JP3107825B2 (de) |
KR (1) | KR100254305B1 (de) |
DE (2) | DE4123692C2 (de) |
ES (1) | ES2078745T3 (de) |
WO (1) | WO1993002285A1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4141930B4 (de) * | 1991-12-19 | 2007-02-08 | Robert Bosch Gmbh | Elektromagnetisch betätigbares Einspritzventil |
US5484108A (en) * | 1994-03-31 | 1996-01-16 | Siemens Automotive L.P. | Fuel injector having novel multiple orifice disk members |
KR100386218B1 (ko) * | 1994-10-17 | 2003-08-19 | 지멘스 비디오 오토모티브 코포레이션 | 축선이탈분사스트림의감소된스트림분산을가진연료인젝터 |
DE4445358A1 (de) * | 1994-12-20 | 1996-06-27 | Bosch Gmbh Robert | Ventil und Verfahren zur Herstellung eines Ventiles |
DE4446241A1 (de) | 1994-12-23 | 1996-06-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
EP0781917A1 (de) * | 1995-12-26 | 1997-07-02 | General Motors Corporation | Ventilsitzhalterung eines Brennstoffeinspritzventils |
JP3750126B2 (ja) * | 1996-03-26 | 2006-03-01 | 株式会社デンソー | 燃料噴射弁 |
DE19625059A1 (de) * | 1996-06-22 | 1998-01-02 | Bosch Gmbh Robert | Einspritzventil, insbesondere zum direkten Einspritzen von Kraftstoff in einen Brennraum eines Verbrennungsmotors |
DE19724075A1 (de) * | 1997-06-07 | 1998-12-10 | Bosch Gmbh Robert | Verfahren zur Herstellung einer Lochscheibe für ein Einspritzventil und Lochscheibe für ein Einspritzventil und Einspritzventil |
DE19822896A1 (de) | 1998-05-22 | 1999-11-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19855568A1 (de) * | 1998-12-02 | 2000-06-08 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19856920A1 (de) | 1998-12-10 | 2000-06-15 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19935262A1 (de) * | 1999-07-27 | 2001-02-01 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10059007A1 (de) * | 2000-11-28 | 2002-05-29 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10118164B4 (de) * | 2001-04-11 | 2007-02-08 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6966499B2 (en) * | 2003-01-09 | 2005-11-22 | Siemens Vdo Automotive Corporation | Spray pattern control with non-angled orifices formed on a generally planar metering disc and reoriented on subsequently dimpled fuel injection metering disc |
US6948665B2 (en) * | 2003-06-30 | 2005-09-27 | Siemens Vdo Automotive Corporation | Fuel injector including an orifice disc, and a method of forming the orifice disc with an asymmetrical punch |
US7163159B2 (en) * | 2003-07-15 | 2007-01-16 | Siemens Vdo Automotive Corporation | Fuel injector including a compound angle orifice disc |
US7744020B2 (en) * | 2003-07-21 | 2010-06-29 | Continental Automotive Systems Us, Inc. | Fuel injector including an orifice disc, and a method of forming the orifice disc including punching and shaving |
US7159436B2 (en) * | 2004-04-28 | 2007-01-09 | Siemens Vdo Automotive Corporation | Asymmetrical punch |
US7201329B2 (en) * | 2004-04-30 | 2007-04-10 | Siemens Vdo Automotive Corporation | Fuel injector including a compound angle orifice disc for adjusting spray targeting |
US7086615B2 (en) | 2004-05-19 | 2006-08-08 | Siemens Vdo Automotive Corporation | Fuel injector including an orifice disc and a method of forming an oblique spiral fuel flow |
US20060157595A1 (en) * | 2005-01-14 | 2006-07-20 | Peterson William A Jr | Fuel injector for high fuel flow rate applications |
US20060192036A1 (en) * | 2005-02-25 | 2006-08-31 | Joseph J M | Fuel injector including a multifaceted dimple for an orifice disc with a reduced footprint of the multifaceted dimple |
US20060200988A1 (en) | 2005-03-11 | 2006-09-14 | Siemens Vdo Automotive Corporation | Sandwich orifice disc |
EP1712776B1 (de) * | 2005-04-14 | 2008-07-02 | Siemens Aktiengesellschaft | Ventilkörper und Flüssigkeitsinjektor mit Ventilkörper |
JP5161853B2 (ja) * | 2009-09-29 | 2013-03-13 | 三菱電機株式会社 | 燃料噴射弁 |
US20180283339A1 (en) * | 2015-09-30 | 2018-10-04 | Nostrum Energy Pte. Ltd. | Spray targeting and plume shaping for colliding jet atomizer with asymmetrical radial distribution |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1589247A (en) * | 1926-01-07 | 1926-06-15 | Super Diesel Tractor Corp | Reed-type spray nozzle |
US4030668A (en) * | 1976-06-17 | 1977-06-21 | The Bendix Corporation | Electromagnetically operated fuel injection valve |
US4934653A (en) * | 1987-12-23 | 1990-06-19 | Siemens-Bendix Automotive Electronics L.P. | Multi-stream thin edge orifice disks for valves |
DE3841142C2 (de) * | 1988-12-07 | 1994-09-29 | Bosch Gmbh Robert | Einspritzventil |
US4971254A (en) * | 1989-11-28 | 1990-11-20 | Siemens-Bendix Automotive Electronics L.P. | Thin orifice swirl injector nozzle |
-
1991
- 1991-07-17 DE DE4123692A patent/DE4123692C2/de not_active Expired - Fee Related
-
1992
- 1992-06-10 ES ES92911364T patent/ES2078745T3/es not_active Expired - Lifetime
- 1992-06-10 EP EP92911364A patent/EP0553310B1/de not_active Expired - Lifetime
- 1992-06-10 US US08/030,188 patent/US5335864A/en not_active Expired - Lifetime
- 1992-06-10 WO PCT/DE1992/000477 patent/WO1993002285A1/de active IP Right Grant
- 1992-06-10 DE DE59203684T patent/DE59203684D1/de not_active Expired - Lifetime
- 1992-06-10 JP JP04511209A patent/JP3107825B2/ja not_active Expired - Lifetime
-
1993
- 1993-03-16 KR KR1019930700780A patent/KR100254305B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9302285A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1993002285A1 (de) | 1993-02-04 |
US5335864A (en) | 1994-08-09 |
KR930702610A (ko) | 1993-09-09 |
DE4123692A1 (de) | 1993-01-21 |
JPH06501087A (ja) | 1994-01-27 |
DE4123692C2 (de) | 1995-01-26 |
JP3107825B2 (ja) | 2000-11-13 |
EP0553310B1 (de) | 1995-09-13 |
KR100254305B1 (ko) | 2000-06-01 |
ES2078745T3 (es) | 1995-12-16 |
DE59203684D1 (de) | 1995-10-19 |
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