EP1105641A1 - Fuel injection valve - Google Patents
Fuel injection valveInfo
- Publication number
- EP1105641A1 EP1105641A1 EP00940207A EP00940207A EP1105641A1 EP 1105641 A1 EP1105641 A1 EP 1105641A1 EP 00940207 A EP00940207 A EP 00940207A EP 00940207 A EP00940207 A EP 00940207A EP 1105641 A1 EP1105641 A1 EP 1105641A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel injection
- guide
- hole
- injection valve
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- a thin filter element is additionally formed as a further component on the upstream end face of the guide element.
- a middle circular filter zone countless circular filter openings are provided.
- the filter element completely covers the guide element with its through holes.
- the functional integration is achieved, which is achieved in a particularly cost-effective manner by a simplified manufacturability and a reduced number of manufacturing processes.
- the functional integration is achieved in that only one opening is provided in a component designed as a guide disk for axially guiding a valve needle, which serves both as a guide opening and as a flow opening.
- the inner through hole in the guide disk is advantageously produced by punching. In this way, an opening is introduced in one process step, with which both the guiding of the valve needle and the passage of the fuel is realized. Further Openings are not required in the guide disc, so that no further manufacturing processes are necessary.
- FIG. 1 shows a partially illustrated fuel injector with a guide disk according to the invention
- FIG. 2 shows a guide disk in a plan view.
- FIG. 1 shows a valve in the form of an injection valve for
- 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.
- an axially movable valve needle 5 is arranged, which has a z.
- B. has cylindrical valve closing body 7.
- the injection valve is actuated in a known manner, for example electromagnetically.
- a schematically 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 connected to the valve closing body 7 opposite end of the valve needle 5 by z. B. a weld seam connected by a laser and aligned with the core 12.
- the injection valve can also be actuated piezoelectrically or magnetostrictively.
- a valve seat body 16 is tightly mounted on the downstream end of the valve seat carrier 1 facing away from the core 12 in the longitudinal opening 3 which is concentric to the longitudinal axis 2 of the valve by welding.
- the valve seat body 16 having a fixed valve seat 18 is provided with a z.
- the cylindrical, the valve seat 18 facing a contour of a spherical portion valve closing body 7 cooperates with the frustoconical tapered valve seat 18 of the valve seat body 16.
- the perforated disk 21 has at least one, for example four, injection openings 36 formed by erosion, stamping or etching. A retaining edge of the perforated disk 21 is conically bent outwards so that it bears against the inner wall of the valve seat carrier 1 determined by the longitudinal opening 3, a radial one Pressure is present.
- the perforated disk 21 is tightly connected to the wall of the valve seat support 1, for example by welding.
- the insertion depth of the valve seat body 16 determines the size of the stroke of the valve needle 5.
- the one end position of the valve needle 5 when the solenoid 10 is not energized is determined by the valve closing body 7 resting on the valve seat 18, while the other end position of the valve needle 5 is established when the solenoid 1 is excited results from the installation of the anchor 11 at the lower core end.
- the guide disk 33 is used for the radial guidance of the valve needle 5 during its axial movement in the longitudinal opening 3 to avoid excessive wear on the valve seat 18 and asymmetrical flow conditions between the valve seat 18 and the spray openings 36.
- the guide disk 33 also fulfills one
- the guide disk 33 has a thickness of approximately 80 ⁇ m to 150 ⁇ m.
- the guide disk 33 is usually produced by means of
- stamping, etching or electroforming (LIGA, MIGA technology).
- Figure 2 shows a guide plate 33 as a single component in a plan view.
- a central through hole 43 is provided, which from a circular shape is shaped differently.
- the guide disk 33 has a plurality of spaced-apart guide regions 44, which prescribe a slightly larger diameter than the outer diameter of the valve closing body 7 of the valve needle 5.
- Flow regions 45 which extend the opening width of the through hole 43, are provided circumferentially distributed between the guide areas 44 restricting the opening width of the through hole 43. Seen over the circumference of the through hole 43, guide regions 44 and are alternately located on its boundary edge
- FIG. 2 shows a guide disk 33, each with five guide areas 44 and flow areas 45.
- the guide disk 33 is fastened e.g. with four welding points that are offset by 90 ° and can be achieved with a laser.
- the guide disc 33 is used for assembly with a pin that has a slightly larger diameter than the valve closing body 7
- Valve seat 18 centered.
- the guide disk 33 is pressed against the end face 32 of the valve seat body 16 and subsequently z. B. with a resistance weld or with a laser weld.
- the guide disk 33 lies with its upper end face, which is opposite the valve seat body 16, for. B. on an optionally installable sleeve-shaped support element 48.
- the guide disk 33 with its upper end face in its outer area at a step or on a paragraph of the valve seat support 1 similar to that known from US 5,642,862 to bring to the plant.
- the valve seat body 16 can also be fixed in the valve seat carrier 1 instead of weld seams, for example by means of flanging.
- valve seat body 16 and the guide disk 33 Possible methods for connecting the valve seat body 16 and the guide disk 33 are e.g. Laser welding, resistance welding, soldering or clamping.
- the inner through hole 43 in the guide disc 33 is e.g. introduced by punching.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19927899A DE19927899A1 (en) | 1999-06-18 | 1999-06-18 | Fuel injection valve for fuel injection device for IC engine has guide disc infront of valve seat provided with opening having alternating guide regions for valve closure element and fuel flow regions |
DE19927899 | 1999-06-18 | ||
PCT/DE2000/001593 WO2000079123A1 (en) | 1999-06-18 | 2000-05-18 | Fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1105641A1 true EP1105641A1 (en) | 2001-06-13 |
EP1105641B1 EP1105641B1 (en) | 2008-02-13 |
Family
ID=7911709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00940207A Expired - Lifetime EP1105641B1 (en) | 1999-06-18 | 2000-05-18 | Fuel injection valve |
Country Status (5)
Country | Link |
---|---|
US (1) | US6575428B1 (en) |
EP (1) | EP1105641B1 (en) |
JP (1) | JP2003502576A (en) |
DE (2) | DE19927899A1 (en) |
WO (1) | WO2000079123A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10133166A1 (en) * | 2001-07-07 | 2003-01-16 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
US8430078B2 (en) | 2007-12-21 | 2013-04-30 | Robert Bosch Gmbh | Fuel injection valve |
EP3076004B1 (en) * | 2015-04-02 | 2018-09-12 | Continental Automotive GmbH | Valve assembly with a particle retainer element and fluid injection valve |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1309824A (en) | 1970-08-03 | 1973-03-14 | Barkas Werke Ifa Kom Fuer Kraf | Fuel injection valves for internal combustion engines |
DE3427526A1 (en) * | 1984-07-26 | 1986-02-06 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTROMAGNETICALLY ACTUABLE VALVE |
DE3916459A1 (en) | 1989-05-20 | 1990-11-22 | Bosch Gmbh Robert | ELECTROMAGNETICALLY ACTUATED VALVE |
DE3935148A1 (en) * | 1989-10-21 | 1991-05-02 | Bosch Gmbh Robert | ELECTROMAGNETICALLY ACTUABLE FUEL INJECTION VALVE |
US5285969A (en) * | 1989-11-25 | 1994-02-15 | Robert Bosch Gmbh | Electromagnetically operated fuel injection valve |
US4971254A (en) | 1989-11-28 | 1990-11-20 | Siemens-Bendix Automotive Electronics L.P. | Thin orifice swirl injector nozzle |
JPH04311674A (en) * | 1991-04-08 | 1992-11-04 | Zexel Corp | Fuel injection nozzle |
DE69306766T2 (en) | 1992-03-05 | 1997-05-28 | Siemens Automotive Corp Lp | FUEL INJECTION NOZZLE WITH INTERNAL FILTER |
US5642862A (en) | 1995-07-28 | 1997-07-01 | Siemens Automotive Corporation | Fuel injection valve having a guide diaphragm and method for assembling |
DE19631066A1 (en) * | 1996-08-01 | 1998-02-05 | Bosch Gmbh Robert | Fuel injector |
DE19633260A1 (en) * | 1996-08-17 | 1998-02-19 | Bosch Gmbh Robert | Injection valve, in particular for injecting fuel directly into a combustion chamber of an internal combustion engine |
DE19653832A1 (en) * | 1996-12-21 | 1998-06-25 | Bosch Gmbh Robert | Valve with combined valve seat body and spray orifice plate |
DE19703200A1 (en) * | 1997-01-30 | 1998-08-06 | Bosch Gmbh Robert | Fuel injector |
US5875972A (en) * | 1997-02-06 | 1999-03-02 | Siemens Automotive Corporation | Swirl generator in a fuel injector |
DE19736682A1 (en) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Fuel injector for internal combustion engine |
-
1999
- 1999-06-18 DE DE19927899A patent/DE19927899A1/en not_active Withdrawn
-
2000
- 2000-05-18 WO PCT/DE2000/001593 patent/WO2000079123A1/en active IP Right Grant
- 2000-05-18 DE DE50014959T patent/DE50014959D1/en not_active Expired - Lifetime
- 2000-05-18 EP EP00940207A patent/EP1105641B1/en not_active Expired - Lifetime
- 2000-05-18 US US09/763,269 patent/US6575428B1/en not_active Expired - Fee Related
- 2000-05-18 JP JP2001505449A patent/JP2003502576A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO0079123A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1105641B1 (en) | 2008-02-13 |
JP2003502576A (en) | 2003-01-21 |
WO2000079123A1 (en) | 2000-12-28 |
DE19927899A1 (en) | 2000-12-21 |
US6575428B1 (en) | 2003-06-10 |
DE50014959D1 (en) | 2008-03-27 |
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