DE102004055267A1 - Fuel injecting device e.g. CR injector, for internal combustion engine, has gap formed between cylindrical section and piston, and control space confined between end surface of outer valve pin and side limitation - Google Patents
Fuel injecting device e.g. CR injector, for internal combustion engine, has gap formed between cylindrical section and piston, and control space confined between end surface of outer valve pin and side limitation Download PDFInfo
- Publication number
- DE102004055267A1 DE102004055267A1 DE200410055267 DE102004055267A DE102004055267A1 DE 102004055267 A1 DE102004055267 A1 DE 102004055267A1 DE 200410055267 DE200410055267 DE 200410055267 DE 102004055267 A DE102004055267 A DE 102004055267A DE 102004055267 A1 DE102004055267 A1 DE 102004055267A1
- Authority
- DE
- Germany
- Prior art keywords
- valve needle
- needle
- piston
- outer valve
- fuel
- 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.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims description 26
- 238000002485 combustion reaction Methods 0.000 title description 3
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
- F02M45/086—Having more than one injection-valve controlling discharge 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0059—Arrangements of valve actuators
- F02M63/0061—Single actuator acting on two or more 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/46—Valves, e.g. injectors, with concentric 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
Abstract
Description
Die Erfindung betrifft eine Kraftstoffeinspritzvorrichtung nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a fuel injection device according to Preamble of claim 1.
Ein bekannter CR-Injektor mit KVD-Düse der Anmelderin (KVD = Koaxial-Vario-Düse) hat eine so genannte erste Ventilnadel oder äußere Ventilnadel. Diese umgibt koaxial eine so genannte zweite Ventilnadel oder innere Ventilnadel. Diese ist im wesentlichen bolzenförmig und öffnet oder schließt mit ihrem im wesentlichen kegelförmigen unteren Endbereich eine Reihe von radial inneren Einspritzöffnungen für Kraftstoff. Die äußere Ventilnadel gibt im geöffneten Zustand eine Reihe von radial äußeren Einspritzöffnungen für den Kraftstoff frei. Im Betrieb können beide Ventilnadeln nacheinander angehoben werden, so dass bei Teillastbetrieb eine einzige Reihe von Einspritzöffnungen verwendet wird, und für Volllastbetrieb Kraftstoff zusätzlich durch die andere Reihe von Einspritzöffnungen in einen Brennraum eines Motors eingespritzt wird.One known CR injector with KVD nozzle Applicant's (KVD = Coaxial Vario Nozzle) a so-called first valve needle or outer valve needle. This surrounds coaxial with a so-called second valve needle or inner valve needle. This is essentially bolt-shaped and opens or closes with her im essential conical lower end region a series of radially inner injection openings for fuel. The outer valve needle are in the open state a series of radially outer injection openings for the Fuel free. In operation can both valve needles are raised one after the other, so that at partial load operation a single row of injection ports is used, and for Full load fuel additionally through the other row of injection ports into a combustion chamber an engine is injected.
Außerdem ist ein CR-Injektor der Firma Delphi mit direkter Nadelsteuerung bekannt.Besides that is a CR injector from Delphi with direct needle control known.
Die beiden bekannten Lösungen können nicht in einfacher Weise vorteilhaft miteinander verbunden werden.The both known solutions can not be connected in a simple manner advantageous to each other.
Vorteile der ErfindungAdvantages of invention
Demgegenüber hat die Erfindung gemäß dem kennzeichnenden Teil des Anspruchs 1 den Vorteil, dass eine kompakte Ausführung einer direkten Nadelsteuerung einer KVD-Düse ermöglicht wird, wobei ein hydraulischer Übersetzer in die Einspritzvorrichtung und dabei teilweise in die äußere Düsennadel integriert ist.In contrast, has the invention according to the characterizing Part of claim 1 has the advantage that a compact design of a direct needle control of a KVD nozzle is possible, using a hydraulic translator in the injection device and thereby partially in the outer nozzle needle is integrated.
Vorteilhaft ist, dass der Injektor keinen Rücklauf haben muss, weil ein Steuerventil zum Entlasten eines Steuerraums von Druck nicht vorhanden ist.Advantageous is that the injector has no return Must have because a control valve to relieve a control room of pressure is not present.
Bei der Ausführungsform nach Anspruch 3 kann einfach Kraftstoff gemäß dem Anspruch 4 zum Ventilsitz der inneren Düsennadel geleitet werden und der Steuerraum mit Kraftstoff gefüllt werdenat the embodiment according to claim 3 can simply fuel according to claim 4 to the valve seat the inner nozzle needle and the control room are filled with fuel
Die Ausführungsform nach Anspruch 5 ist für manche Anwendungsfälle zweckmäßig.The embodiment according to claim 5 is for some use cases appropriate.
Zeichnungdrawing
Ein Ausführungsbeispiel der erfindungsgemäßen Kraftstoffeinspritzvorrichtung ist in der nicht maßstäblichen Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert.One embodiment the fuel injection device according to the invention is in the not to scale Drawing and shown in the following description explained in more detail.
Es
zeigt
die einzige Figur die wesentlichen Komponenten einer
erfindungsgemäßen Kraftstoffeinspritzvorrichtung.It shows
the single figure the essential components of a fuel injection device according to the invention.
Beschreibung des Ausführungsbeispielsdescription of the embodiment
Die
Figur ist nicht maßstäblich. Insbesondere
können
die Außendurchmesser
der beiden Ventilnadeln in der Praxis relativ zueinander andere
Größen haben.
Die Einspritzvorrichtung
Die
Außenseite
der äußeren Ventilnadel
Die äußere Ventilnadel
Koaxial
in der äußeren Düsennadel
Oberhalb
des oberen Endes des Teils
Die
in die äußere Ventilnadel
Zu
den äußeren Einspritzöffnungen
In
Betrieb arbeitet die Anordnung so, dass der Betätiger
Damit
dies geschehen kann, ist vorzugsweise der Durchmesser s2 des Dichtsitzes
der Dichtkante
Im
Beispiel wird der Kolben
Wenn
der Aktor
Insgesamt
hat die erfindungsgemäße Vorrichtung
den Vorteil eines sehr kompakten Aufbaus einer Koaxial-Vario-Düse, die
im Emissionsbereich (Teillastbereich eines Verbrennungsmotors, insbesondere
zum Antrieb von Kraftfahrzeugen) nur die äußere Lochreihe (äußere Einspritzöffnungen
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410055267 DE102004055267A1 (en) | 2004-11-17 | 2004-11-17 | Fuel injecting device e.g. CR injector, for internal combustion engine, has gap formed between cylindrical section and piston, and control space confined between end surface of outer valve pin and side limitation |
PCT/EP2005/055627 WO2006079425A1 (en) | 2004-11-17 | 2005-10-28 | Fuel injection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410055267 DE102004055267A1 (en) | 2004-11-17 | 2004-11-17 | Fuel injecting device e.g. CR injector, for internal combustion engine, has gap formed between cylindrical section and piston, and control space confined between end surface of outer valve pin and side limitation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004055267A1 true DE102004055267A1 (en) | 2006-05-18 |
Family
ID=35464498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410055267 Withdrawn DE102004055267A1 (en) | 2004-11-17 | 2004-11-17 | Fuel injecting device e.g. CR injector, for internal combustion engine, has gap formed between cylindrical section and piston, and control space confined between end surface of outer valve pin and side limitation |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004055267A1 (en) |
WO (1) | WO2006079425A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2918818A1 (en) * | 2014-03-10 | 2015-09-16 | Delphi International Operations Luxembourg S.à r.l. | Fuel injector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017201908A1 (en) * | 2017-02-07 | 2018-08-09 | Robert Bosch Gmbh | Hydraulic coupler for a piezo injector, piezo injector |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10210927A1 (en) * | 2002-03-13 | 2003-10-02 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10222208A1 (en) * | 2002-05-18 | 2003-11-27 | Bosch Gmbh Robert | Fuel injection valve for combustion engine, has outer valve needle that is so moved in bore of housing that valve can be kept in intermediate position without resting at stop shoulder of inner valve needle |
DE10307002A1 (en) * | 2003-02-19 | 2004-09-09 | Volkswagen Mechatronic Gmbh & Co. Kg | Fuel injection nozzle has outer nozzle needle and control element in form of inner nozzle needle with first and second lower and higher fuel outlet cross-section positions |
DE10326045A1 (en) * | 2003-06-10 | 2004-12-30 | Robert Bosch Gmbh | Injection nozzle for internal combustion engines |
DE10348925A1 (en) * | 2003-10-18 | 2005-05-12 | Bosch Gmbh Robert | Fuel injector with multipart, directly controlled injection valve member |
-
2004
- 2004-11-17 DE DE200410055267 patent/DE102004055267A1/en not_active Withdrawn
-
2005
- 2005-10-28 WO PCT/EP2005/055627 patent/WO2006079425A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2918818A1 (en) * | 2014-03-10 | 2015-09-16 | Delphi International Operations Luxembourg S.à r.l. | Fuel injector |
Also Published As
Publication number | Publication date |
---|---|
WO2006079425A1 (en) | 2006-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed |
Effective date: 20111004 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |