EP1299638B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1299638B1 EP1299638B1 EP01989419A EP01989419A EP1299638B1 EP 1299638 B1 EP1299638 B1 EP 1299638B1 EP 01989419 A EP01989419 A EP 01989419A EP 01989419 A EP01989419 A EP 01989419A EP 1299638 B1 EP1299638 B1 EP 1299638B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl
- fuel injection
- injection valve
- fuel
- membrane
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 62
- 238000002347 injection Methods 0.000 title claims description 17
- 239000007924 injection Substances 0.000 title claims description 17
- 239000012528 membrane Substances 0.000 claims description 28
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 210000004379 membrane Anatomy 0.000 description 20
- 239000000203 mixture Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
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
- 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
-
- 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
- F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
-
- 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
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
Definitions
- the invention is based on a fuel injector according to the genus of the main claim.
- DE 197 36 682 A1 describes a fuel injector for injecting fuel directly into the combustion chamber a mixture-compressing, spark-ignited Internal combustion engine known, which at the downstream end the fuel injector a guide and Seating area of three disc-shaped Elements is formed.
- a swirl element between a guide element and a valve seat element embedded.
- the guide element serves to guide it protruding, axially movable valve needle, while a Valve closing section of the valve needle with a Valve seat surface of the valve seat element cooperates.
- the Swirl element has an inner opening area multiple swirl channels that are not related to the outer circumference of the swirl element are connected. The whole Opening area extends completely over the axial Thickness of the swirl element.
- a disadvantage of that from the above publication known fuel injector is in particular the fixed twist angle that is not the different operating conditions such as partial and Full load operation of an internal combustion engine can be adapted can. This also allows the cone opening angle of the injected mixture cloud not to the different Operating conditions are adjusted, which leads to inhomogeneities of combustion, increased fuel consumption and increased Exhaust emissions leads.
- the fuel injector according to the invention with the has characteristic features of the main claim on the other hand the advantage that the swirl depends on Operating state of the internal combustion engine is adjustable, whereby a the operating state of the internal combustion engine adapted beam pattern can be generated. This allows the mixture formation and the combustion process are optimized become.
- the beam opening angle is influenced advantageously about the pressure of that Fuel injector flowing through fuel, the a change in cross section of the swirl channels by a causes elastic membrane according to the operating state and thereby directly influencing the twist intensity allows.
- the training of the Membrane as a disc-shaped membrane that between the Swirl disc and a guide disc is arranged.
- This Embodiment is particularly light and inexpensive can be manufactured and for any shape of swirl disc applicable.
- Another advantage is that the disc-shaped membrane is connected to the outside of the guide washer because leakage losses can thereby be avoided.
- the membrane can advantageously also be elastic Be executed on any layer Side surface of the swirl channel can be arranged.
- FIGS. 2 to 4 embodiments of a fuel injector 1 according to the invention closer should be described for a better understanding of the Invention first with reference to FIG. 1 the invention Fuel injector 1 in an overall view explained briefly with regard to its essential components become.
- the fuel injector 1 is in the form of a Fuel injection valve for fuel injection systems of mixture-compressing, spark-ignited Running internal combustion engines.
- the Fuel injection valve 1 is particularly suitable for not directly injecting fuel into one Shown combustion chamber of an internal combustion engine.
- the fuel injection valve 1 comprises a nozzle body 2, in which the valve needle 3 is arranged.
- the valve needle 3 is operatively connected to a valve closing body 4, the one arranged on a valve seat body 5 Valve seat surface 6 cooperates to form a sealing seat.
- Fuel injector 1 is in the Embodiment around an inward opening Fuel injector 1, which has at least one Spray opening 7 has.
- the nozzle body 2 is through a Seal 8 against the outer pole 9 of a magnetic circuit sealed.
- a solenoid 10 is in a coil housing 11 encapsulated and wound on a bobbin 12, which bears against an inner pole 13 of the magnetic circuit.
- the Inner pole 13 and outer pole 9 are through a gap 26 separated from each other and are based on one Connecting component 29 from.
- the solenoid 10 is a Line 19 from via an electrical plug contact 17th supplyable electric current excited.
- the plug contact 17 is surrounded by a plastic sheath 18, which on Inner pole 13 can be molded.
- the valve needle 3 is in a valve needle guide 14 led, which is disc-shaped.
- a paired shim 15 is used for stroke adjustment the other side of the shim 15 is a Anchor 20.
- This stands over a first flange 21 non-positively in connection with the valve needle 3, which through a weld seam 22 with the first flange 21 connected is.
- One is supported on the first flange 21 Return spring 23, which in the present design of the Fuel injector 1 through a sleeve 24 Bias is brought.
- a second flange 31, which with the valve needle 3 over a weld 33 is connected serves as the lower one Armature stop.
- a guide washer 35 is located on the inlet side of the sealing seat trained for a central alignment of the Valve needle 3 ensures and thus tilting the Valve needle 3 and subsequent inaccuracies in the counteracts the metered amount of fuel.
- Swirl disk 34 is arranged between the Guide disc 35 and the valve seat body 5 , which has swirl channels 36.
- a membrane 37 is provided, which preferably consists of a elastic material exists and which under the influence of system pressure prevailing in fuel injector 1 is deformable.
- valve needle guide 14 in the armature 20 and in the Guide disc 35 run fuel channels 30a to 30c.
- the fuel is supplied via a central fuel supply 16 supplied and filtered by a filter element 25.
- the Fuel injector 1 is against by a seal 28 a fuel line, not shown sealed.
- valve needle 3 If the coil current is switched off, the armature 20 falls sufficient degradation of the magnetic field by the pressure of the Return spring 23 from the inner pole 13, whereby the valve needle 3 is in operative connection with the flange 21 moved against the stroke direction. The valve needle 3 will thereby moving in the same direction, causing the Valve closing body 4 is placed on the valve seat 6 and the fuel injector 1 is closed.
- Fig. 2 shows a schematic representation of a exemplary swirl disk 34, which the below membrane 37 according to the invention described is particularly simple and effectively supported.
- the swirl disk 34 has in present exemplary embodiment four swirl channels 36, that tangent to a center of the swirl disk 34 are offset.
- the offset of the swirl channels 36 and theirs radial length, their number and arrangement are included any.
- the cross section of the swirl channels 36 is directed according to the fuel pressure and the requirements for the Swirl intensity and can be achieved by simple changes in the Width of the swirl channels 36 or the axial thickness of the Swirl disk 34 and through the membrane 37 according to the invention be adjusted.
- Fig. 3 shows an excerpted sectional view Section of the swirl disk 34 shown in FIG. 2 of the fuel injector 1 according to the invention Area III in Fig. 2.
- the one shown in FIG. 3, for example cuboid Swirl channel 36 has a cover plate similar to the end the membrane 37, which covers the swirl channel 36.
- the Membrane 37 can be a disk-shaped membrane 37a between the swirl disk 34 and the guide disk 35 be arranged or in the form of an elastic layer 37b on one end of the swirl disk 34 facing the Guide disc 35 may be formed.
- the arrow indicates the direction of flow of the fuel.
- the arrangement of the Membrane 37 is not on the position between the Guide disk 35 and the swirl disk 34 limited, but can in principle be used on any of the radial ones Side surfaces 41 take place.
- the disc-shaped formation and the arrangement between the swirl disk 34 and the Guide disc 35 is due to the particularly simple shape and Arrangement type as a preferred embodiment shown.
- FIGS. 4A and 4B illustrate the operation of the disc-shaped membrane 37a or the elastic layer 37b.
- the membrane 37a or the layer 37b is in the 4A and 4B each shown above.
- Fig. 4A the operation of the disc-shaped Diaphragm 37a is shown schematically.
- the swirl channel 36 is thereby in a side sectional view along the in Fig. 2 indicated line IV-IV shown.
- the disc-shaped Membrane 37a is between the swirl disk 34 and the Guide disc 35 arranged and to avoid Leakage losses with the guide disc 35 on a radial outer edge 40 of the guide plate 35 glued or welded.
- FIG. 4B shows the same view as FIG. 4A elastic layer 37b made membrane 37.
- 4A is the elastic shown in FIG. 4B
- Layer 37b is not a loose disc between the swirl disc 34 and the guide disc 35, but in the form one on the outlet end 38 of the Guide disc 35 formed elastic layer 37b, in its entire extent with the guide disc 35 connected, executed.
- the invention is not shown on the Embodiments limited and especially in Fuel injectors 1 with piezoelectric or magnetostrictive actuators 10 and in any form of Swirl disks 34 with swirl channels 36 of any shape applicable.
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)
Description
- Fig. 1
- einen axialen Schnitt durch ein Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 2
- eine schematische Ansicht einer beispielhaften Drallscheibe des in Fig. 1 dargestellten erfindungsgemäß ausgestalteten Brennstoffeinspritzventils,
- Fig. 3
- eine schematische Ansicht eines Drallkanals der in Fig. 2 dargestellten Drallscheibe, und
- Fig. 4A-4B
- eine schematische Darstellung der Funktionsweise des ersten und eines zweiten Ausführungsbeispiels einer an der Drallscheibe angeordneten Membran.
Claims (8)
- Brennstoffeinspritzventil (1), insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer gemischverdichtenden, fremdgezündeten Brennkraftmaschine, mit einem Aktor (10), einer durch den Aktor (10) betätigbaren Ventilnadel (3) zur Betätigung eines Ventilschließkörpers (4), der zusammen mit einer Ventilsitzfläche (6) einen Dichtsitz bildet, und einer Drallscheibe (34), die über mindestens einen Drallkanal (36) verfügt,
dadurch gekennzeichnet, daß eine elastische Membran (37) so an der Drallscheibe (34) angeordnet ist, daß ein Zumeßquerschnitt des zumindest einen Drallkanals (36) abhängig von einem im Brennstoffeinspritzventil (1) während des Betriebs herrschenden Brennstoffdruck veränderbar ist. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß die Membran (37) zumindest eine Seitenfläche (41) des zumindest einen Drallkanals (36) bildet. - Brennstoffeinspritzventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die elastische Membran (37) in Form einer scheibenförmigen Membran (37a) ausgeführt ist. - Brennstoffeinspritzventil nach Anspruch 3,
dadurch gekennzeichnet, daß die scheibenförmige Membran (37a) zwischen der Drallscheibe (34) und einer zulaufseitig der Drallscheibe (34) angeordneten Führungsscheibe (35) angeordnet ist. - Brennstoffeinspritzventil nach Anspruch 4,
dadurch gekennzeichnet, daß die scheibenförmige Membran (37a) zumindest an einem radial äußeren Rand (40) mit der Führungsscheibe (35) verbunden ist. - Brennstoffeinspritzventil nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß ein Querschnitt des zumindest einen Drallkanals (36) bei zunehmendem Brennstoffdruck durch die scheibenförmige Membran (37a) abnimmt. - Brennstoffeinspritzventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Membran (37) in Form einer elastischen Schicht (37b) ausgebildet ist. - Brennstoffeinspritzventil nach Anspruch 7,
dadurch gekennzeichnet, daß ein Querschnitt des zumindest einen Drallkanals (36) bei zunehmendem Brennstoffdruck durch die elastische Schicht (37a) zunimmt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10063259A DE10063259A1 (de) | 2000-12-19 | 2000-12-19 | Brennstoffeinspritzventil |
DE10063259 | 2000-12-19 | ||
PCT/DE2001/004751 WO2002050427A1 (de) | 2000-12-19 | 2001-12-15 | Brennstoffeinspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1299638A1 EP1299638A1 (de) | 2003-04-09 |
EP1299638B1 true EP1299638B1 (de) | 2004-05-26 |
Family
ID=7667764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01989419A Expired - Lifetime EP1299638B1 (de) | 2000-12-19 | 2001-12-15 | Brennstoffeinspritzventil |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050072864A1 (de) |
EP (1) | EP1299638B1 (de) |
JP (1) | JP2004516409A (de) |
DE (2) | DE10063259A1 (de) |
WO (1) | WO2002050427A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5880872B2 (ja) * | 2013-01-14 | 2016-03-09 | 株式会社デンソー | 燃料噴射弁及び燃料噴射装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4647013A (en) * | 1985-02-21 | 1987-03-03 | Ford Motor Company | Silicon valve |
US4756508A (en) * | 1985-02-21 | 1988-07-12 | Ford Motor Company | Silicon valve |
DE19736682A1 (de) * | 1997-08-22 | 1999-02-25 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US5996912A (en) * | 1997-12-23 | 1999-12-07 | Siemens Automotive Corporation | Flat needle for pressurized swirl fuel injector |
US6145496A (en) * | 1998-04-07 | 2000-11-14 | Siemens Automotive Corporation | Fuel injector with porous element for atomizing fuel under air pressure |
JP2000055226A (ja) * | 1998-08-03 | 2000-02-22 | Zexel Corp | 流体噴射弁 |
EP1049871B1 (de) * | 1998-08-27 | 2003-07-30 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US6168098B1 (en) * | 1999-06-09 | 2001-01-02 | Siemens Automotive Corporation | Fuel injector with tubular lower needle guide |
DE10034445A1 (de) * | 2000-07-15 | 2002-01-24 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
-
2000
- 2000-12-19 DE DE10063259A patent/DE10063259A1/de not_active Withdrawn
-
2001
- 2001-12-15 JP JP2002551288A patent/JP2004516409A/ja active Pending
- 2001-12-15 US US10/204,865 patent/US20050072864A1/en not_active Abandoned
- 2001-12-15 EP EP01989419A patent/EP1299638B1/de not_active Expired - Lifetime
- 2001-12-15 DE DE50102422T patent/DE50102422D1/de not_active Expired - Fee Related
- 2001-12-15 WO PCT/DE2001/004751 patent/WO2002050427A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
US20050072864A1 (en) | 2005-04-07 |
JP2004516409A (ja) | 2004-06-03 |
WO2002050427A1 (de) | 2002-06-27 |
EP1299638A1 (de) | 2003-04-09 |
DE50102422D1 (de) | 2004-07-01 |
DE10063259A1 (de) | 2002-07-11 |
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Inventor name: HUEBEL, MICHAEL Inventor name: YILDIRIM, FEVZI Inventor name: HOHL, GUENTHER Inventor name: KEIM, NORBERT |
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