WO2002038947A1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- WO2002038947A1 WO2002038947A1 PCT/DE2001/004208 DE0104208W WO0238947A1 WO 2002038947 A1 WO2002038947 A1 WO 2002038947A1 DE 0104208 W DE0104208 W DE 0104208W WO 0238947 A1 WO0238947 A1 WO 0238947A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- fuel injection
- injection valve
- spray openings
- spray
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 51
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 70
- 238000007789 sealing Methods 0.000 claims description 20
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 5
- 238000013517 stratification Methods 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 210000002105 tongue Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F02M61/1853—Orifice plates
- F02M61/186—Multi-layered 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating 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
- 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
-
- 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
- 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
- F02M61/1806—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
-
- 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
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/7888—With valve member flexing about securement
- Y10T137/7891—Flap or reed
Definitions
- the invention relates to a fuel injector according to the preamble of the main claim.
- a fuel injector which can control several spray orifices separately.
- the fuel injector has two valve needles, which are acted upon by a spring against a respective sealing seat with a prestressing force. If one valve needle is lifted from its sealing seat by a certain forward stroke, it strikes against a stop of the other valve needle and takes this valve needle with it during the further stroke.
- the two sealing seats of the two valve needles close differently
- Spray openings that can be aligned at different angles.
- the structure is multi-part, and two sealing seats have to be manufactured precisely, which results in high costs.
- Another disadvantage is that only two groups of spray openings can be controlled separately and no further selection of spray openings to be opened is possible.
- AI is a fuel injector for internal combustion engines with a valve needle and one Auxiliary needle in a bore of the valve needle known.
- the valve needle on its combustion chamber side, which is designed as a valve closing body, cooperates with a valve seat surface to form a sealing seat which separates spray openings from a fuel inlet.
- the auxiliary needle guided in the valve needle also has a valve closing body which interacts with a second valve seat surface of the fuel injector.
- a spring located in the valve needle pulls the auxiliary needle against the valve needle, towards which it likewise forms a sealing seat with a valve seat surface in the valve needle.
- the auxiliary needle When the hydraulically actuated fuel injection valve begins to open due to an increase in the pressure in the fuel feed line, the auxiliary needle is pressed out of its sealing seat in the valve needle against the sealing seat in the valve body and closes a group of spray openings while another group of spray openings is open. If the pressure continues to rise, the valve needle is lifted from its sealing seat and takes the auxiliary needle with it after a certain stroke, which strikes against a stop of the valve needle. All spray openings are then released.
- the disadvantage is that a total of three precisely fitting sealing seats are required. With this fuel injection valve according to the prior art, only two groups of spray openings can be controlled separately.
- a fuel injector with two valve needles is also known from DE 31 20 044 C2, with which spray openings can be opened in two groups.
- One valve needle is guided inside the other valve needle, which is designed as a hollow needle.
- This valve needle which is designed as a hollow needle, has spray openings at its end on the combustion chamber side.
- the disadvantage is that the hollow needle is very expensive to manufacture, since it also has spray openings and thus on one Component two functions that each require precise manufacture of the component are combined.
- the fuel injector according to the invention with the characterizing features of the main claim has the advantage over the other hand to offer a cost-effective and technically implementable solution for the control of opening spray openings, since the spray openings do not require a further precise sealing seat to be opened, but the spray openings, which are assigned to a valve section, can then be opened independently if the respective heating element of the valve section is controlled separately from the valve closing body. In this way, a maximum of all spray openings can be selected separately if a valve section is assigned to all spray openings and the respective heating elements can be controlled separately from one another. As soon as the valve closing body opens, only the spray openings not covered by their valve sections spray fuel.
- the distribution of the fuel in the spray pattern of the fuel injector can be advantageously influenced by the selection of the spray openings.
- At least the valve section of the disc element may consist of bimetal and the stratification of the bimetal may be such that the valve section releases the spray openings when heated.
- at least the valve section of the disk element can consist of bimetal and the layering of the bimetal can be carried out such that the valve sections of the disk element cover the spray openings when heated.
- At least the valve section of the disk element is made of a shape memory alloy, in particular a shape memory alloy that has a two-way effect.
- the heating elements can advantageously consist of electrical heating wires attached to the valve sections.
- all valve sections can be selected and opened individually if a separate control line is provided for each of the heating wires.
- valve seat body or the spray opening plate advantageously has a second bolt circle made of spray openings, located radially on the outside of the first bolt circle, and valve sections of the disk element which are shaped accordingly are assigned to the spray openings of the second bolt circle.
- the spray openings can advantageously have different spray angles, opening diameters and axial lengths.
- FIG. 1 shows a section of an embodiment of a fuel injection valve according to the invention with a closed valve needle and covered spray openings in a sectional view
- FIG. 2 shows the same section as FIG. 1 with released spray openings
- Fig. 3 shows the section plane III-III in Fig. 1 in supervision
- FIG. 4 shows detail IV from FIG. 2.
- FIG. 1 shows a section of a section of a fuel injection valve according to the invention, which faces the combustion chamber (not shown here) of an internal combustion engine.
- a valve body 1 is, for. B. connected via a weld 3 with a spray opening plate 2, which has spray openings 4, and forms together with this a valve seat body 5.
- a valve needle 6 has at its end facing the combustion chamber, not shown, a valve closing body 7.
- the valve closing body 7 acts with a z. B. frustoconical valve seat 8 together to form a sealing seat 9.
- a disc member 10 is arranged on the spray opening plate 2 and is held on the spray opening plate 2 by the valve body 1.
- the disk element 10 has radially inwardly projecting valve sections 11 which cover outer spray openings 12 arranged in a bolt circle 19 at normal operating temperature. On the valve sections 11 heating elements 13 are arranged.
- the valve sections 11 are designed as tongues 17 pointing radially towards the center.
- the disk element 10 is formed from bimetal, the layering of which is shaped in such a way that the valve sections 11 cover the outer spray openings 12 at a low temperature if the heating elements 13 do not additionally heat the valve
- Fig. 1 shows the fuel injector in the closed state.
- the heating elements 13 are not controlled, and the
- Valve sections 11 of the disk element 10 have the normal operating temperature or a lower one. By designing the bimetal, the valve sections 11 are pressed onto the circularly arranged outer spray openings 12 and close them. If now the valve needle
- Spray openings 4 determine the spray pattern of the fuel.
- the valve body 1 is connected via the weld seam 3 to the spray opening plate 2 containing the spray openings 4 and together with this forms a valve seat body 5.
- the valve needle 6 is formed in one piece with the valve closing body 7.
- the valve closing body 7 interacts with the valve seat surface 8 formed in the valve body 1 to form a sealing seat 9.
- the disk element 10 is arranged on the spray opening plate 2 and is on the Spray port plate 2 held by the valve body 1.
- the valve sections 11 with the associated heating elements 13 are arranged above the outer spray openings 12 forming the second hole circle 19.
- the fuel injector is shown in the closed state.
- the heating elements 13 additionally heat the valve sections 11.
- the valve sections 11 bend away from the associated outer spray openings 12 and expose them. If the valve needle 6 is now lifted out of the sealing seat 9, the fuel can escape from all uncovered spray openings 4, 12.
- Two valve sections 11 are shown, which open their respective outer spray opening 12.
- the number of spray openings 12 which can be released separately therefore depends solely on the possibility of controlling the heating elements 13 separately. In the period in which the fuel injection valve is closed, the number of spray openings 12 to be released is advantageously selected by driving the associated heating elements 13.
- the valve needle 6 then opens the fuel injector just as precisely and quickly as with a fuel injector according to the prior art.
- FIG. 3 shows the section plane III-III of FIG. 1.
- the spray openings 4 are arranged.
- the valve sections 11 cover the outer spray openings 12.
- the heating elements 13 are arranged on the valve sections 11.
- the heating elements 13 are z. B. formed as heating wires which are connected via a common connecting wire 14.
- the heating elements 13 can be actuated together for the outer bolt circle 19 in the present embodiment of the invention.
- FIG. 4 shows the detail IV of FIG. 2.
- the spray opening 4 which is an outer spray opening 12, is arranged in the spray opening plate 2.
- Valve section 11 is heated by the heating element 13 and is therefore lifted off the outer spray opening 12.
- the edge of valve body 1, which fixes disc element 10 and valve section 11, can still be seen.
- the valve section 11 made of bimetal has an upper layer 15 with lower thermal expansion and a lower layer 16 with higher thermal expansion.
- the direction of flow of the fuel when the fuel injector is opened is indicated by arrows.
- valve section 11 can also be designed in a shape memory alloy, in particular one that shows a so-called two-way behavior. With this, the deformation depends on the temperature increase and is reversible when the temperature decreases.
- the angle of a fuel injection cone as a whole can be influenced by different design of the angles at which the outer spray openings 12 and the other spray openings 4 are introduced.
- the embodiment of a fuel injector according to the invention advantageously enables a high switching frequency.
- the embodiment according to the invention is also inexpensive to implement.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01993762A EP1332284B1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzventil |
KR1020027008894A KR20020063002A (ko) | 2000-11-11 | 2001-11-12 | 연료 분사 밸브 |
US10/169,962 US6814309B2 (en) | 2000-11-11 | 2001-11-12 | Fuel injector |
DE50102633T DE50102633D1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzventil |
JP2002541244A JP2004513296A (ja) | 2000-11-11 | 2001-11-12 | 燃料噴射弁 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10056039.3 | 2000-11-11 | ||
DE10056039A DE10056039A1 (de) | 2000-11-11 | 2000-11-11 | Brennstoffeinspritzventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002038947A1 true WO2002038947A1 (de) | 2002-05-16 |
Family
ID=7663020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/004208 WO2002038947A1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US6814309B2 (de) |
EP (1) | EP1332284B1 (de) |
JP (1) | JP2004513296A (de) |
KR (1) | KR20020063002A (de) |
DE (2) | DE10056039A1 (de) |
WO (1) | WO2002038947A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10124745A1 (de) * | 2001-05-21 | 2003-03-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US20040188550A1 (en) * | 2003-03-25 | 2004-09-30 | Hitachi Unisia Automotive, Ltd. | Fuel injection valve |
JP2005090233A (ja) * | 2003-09-12 | 2005-04-07 | Hitachi Unisia Automotive Ltd | 燃料噴射弁 |
FR2869573B1 (fr) * | 2004-04-30 | 2006-06-16 | Conception Et Dev Michelin Sa | Vehicule a carburant gazeux et systeme de purge automatique |
GB0421387D0 (en) * | 2004-09-25 | 2004-10-27 | Scion Sprays Ltd | Pulsed electrostatic atomiser |
JP2006152812A (ja) * | 2004-11-25 | 2006-06-15 | Denso Corp | 燃料噴射弁およびその製造方法 |
JP2006183657A (ja) * | 2004-12-02 | 2006-07-13 | Nissan Motor Co Ltd | インジェクタ |
DE102006025332A1 (de) * | 2006-05-31 | 2007-12-06 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Reinigung von Ventilen |
JP2007332804A (ja) * | 2006-06-12 | 2007-12-27 | Nissan Motor Co Ltd | 内燃機関の燃料噴射システムおよび内燃機関の燃料噴射方法 |
US7669789B2 (en) * | 2007-08-29 | 2010-03-02 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
US10639527B2 (en) | 2014-08-18 | 2020-05-05 | Douglas Nardini | Cleaning device |
US9878226B2 (en) * | 2014-08-18 | 2018-01-30 | Douglas Nardini | Cleaning device |
EP3587791B1 (de) * | 2018-06-21 | 2021-03-24 | Claverham Limited | Durchflussregeldüse |
KR102614976B1 (ko) | 2021-12-30 | 2023-12-19 | 주식회사 현대케피코 | 분무각과 분무유량조절이 가능한 인젝터 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048304A1 (de) | 1980-12-20 | 1982-07-29 | Robert Bosch Gmbh, 7000 Stuttgart | "kraftstoffeinspritzduese fuer brennkraftmaschinen" |
DE3120044A1 (de) | 1981-05-20 | 1982-12-09 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
DE3228079A1 (de) | 1982-07-28 | 1984-02-02 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
US5619177A (en) * | 1995-01-27 | 1997-04-08 | Mjb Company | Shape memory alloy microactuator having an electrostatic force and heating means |
DE19827219A1 (de) * | 1997-06-24 | 1999-01-07 | Toyota Motor Co Ltd | Kraftstoffeinspritzventil für einen Verbrennungsmotor |
US6019113A (en) * | 1998-10-26 | 2000-02-01 | General Motors Corporation | Method and apparatus for controlling a shape memory alloy fuel injector |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5140965A (en) * | 1990-04-17 | 1992-08-25 | Hitachi, Ltd. | System for and method of supplying fuel to internal combustion engine |
US5570841A (en) * | 1994-10-07 | 1996-11-05 | Siemens Automotive Corporation | Multiple disk swirl atomizer for fuel injector |
JP3164023B2 (ja) * | 1997-06-25 | 2001-05-08 | トヨタ自動車株式会社 | 内燃機関の燃料噴射弁 |
US6318641B1 (en) * | 2000-02-11 | 2001-11-20 | Delphi Technologies, Inc. | Shape memory alloy fuel injector small package integral design |
-
2000
- 2000-11-11 DE DE10056039A patent/DE10056039A1/de not_active Withdrawn
-
2001
- 2001-11-12 DE DE50102633T patent/DE50102633D1/de not_active Expired - Fee Related
- 2001-11-12 JP JP2002541244A patent/JP2004513296A/ja active Pending
- 2001-11-12 WO PCT/DE2001/004208 patent/WO2002038947A1/de active IP Right Grant
- 2001-11-12 US US10/169,962 patent/US6814309B2/en not_active Expired - Fee Related
- 2001-11-12 KR KR1020027008894A patent/KR20020063002A/ko not_active Application Discontinuation
- 2001-11-12 EP EP01993762A patent/EP1332284B1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3048304A1 (de) | 1980-12-20 | 1982-07-29 | Robert Bosch Gmbh, 7000 Stuttgart | "kraftstoffeinspritzduese fuer brennkraftmaschinen" |
DE3120044A1 (de) | 1981-05-20 | 1982-12-09 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
DE3228079A1 (de) | 1982-07-28 | 1984-02-02 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
US5619177A (en) * | 1995-01-27 | 1997-04-08 | Mjb Company | Shape memory alloy microactuator having an electrostatic force and heating means |
DE19827219A1 (de) * | 1997-06-24 | 1999-01-07 | Toyota Motor Co Ltd | Kraftstoffeinspritzventil für einen Verbrennungsmotor |
US6019113A (en) * | 1998-10-26 | 2000-02-01 | General Motors Corporation | Method and apparatus for controlling a shape memory alloy fuel injector |
Also Published As
Publication number | Publication date |
---|---|
US20030127543A1 (en) | 2003-07-10 |
DE10056039A1 (de) | 2002-05-16 |
DE50102633D1 (de) | 2004-07-22 |
EP1332284A1 (de) | 2003-08-06 |
US6814309B2 (en) | 2004-11-09 |
JP2004513296A (ja) | 2004-04-30 |
EP1332284B1 (de) | 2004-06-16 |
KR20020063002A (ko) | 2002-07-31 |
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