DE102006008647A1 - Fuel injector for internal combustion engine, has sliding sleeve that is axially and adjustably guided to coupler piston and presses with sealing edge, such that control chamber is hydraulically separated from high pressure chamber - Google Patents
Fuel injector for internal combustion engine, has sliding sleeve that is axially and adjustably guided to coupler piston and presses with sealing edge, such that control chamber is hydraulically separated from high pressure chamber Download PDFInfo
- Publication number
- DE102006008647A1 DE102006008647A1 DE200610008647 DE102006008647A DE102006008647A1 DE 102006008647 A1 DE102006008647 A1 DE 102006008647A1 DE 200610008647 DE200610008647 DE 200610008647 DE 102006008647 A DE102006008647 A DE 102006008647A DE 102006008647 A1 DE102006008647 A1 DE 102006008647A1
- Authority
- DE
- Germany
- Prior art keywords
- nozzle needle
- fuel injector
- piston
- nozzle
- control
- 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- Withdrawn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 abstract description 18
- 238000007789 sealing Methods 0.000 title claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 title claims description 4
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000007639 printing Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000543 intermediate Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009715 pressure infiltration Methods 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
- 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
- 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
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
Stand der TechnikState of technology
Die Erfindung betrifft einen Kraftstoffinjektor mit einer direkt betätigbaren Düsennadel nach dem Oberbegriff des Anspruchs 1.The The invention relates to a fuel injector with a directly operable nozzle needle according to the preamble of claim 1.
Ein
Kraftstoffinjektor mit den Merkmalen des Oberbegriffs des Anspruchs
1 ist aus
Aufgabe der vorliegenden Erfindung ist es, den genannten Kraftstoffinjektor mit weniger Führungsflächen einfacher auszuführen.task It is the object of the present invention to provide said fuel injector easier with fewer guide surfaces perform.
Vorteile der ErfindungAdvantages of invention
Die Aufgabe der Erfindung wird mit den gekennzeichneten Maßnahmen des Anspruchs 1 gelöst. Durch die Ausbildung einer Schieberhülse, die im Hochdruckraum des Injektorkörpers axial verschiebbar am aktorseitigen Kopplerkolben geführt ist, wird eine einfache Ausführung einer hydraulischen Abdichtung des Steuerraums geschaffen. Durch die Verwendung der Schieberhülse entfällt eine Führung des aktorseitigen Kopplerkolbens im Injektorkörper.The The object of the invention is with the marked measures of claim 1. By forming a sliding sleeve in the high pressure chamber of the injector axially slidably guided on the actuator-side coupler piston is a simple design created a hydraulic seal of the control room. By the use of the sliding sleeve deleted a guided tour of the Actuator-side coupler piston in the injector body.
Vorteilhafte Weiterbildungen der Erfindung sind durch die Maßnahmen der Unteransprüche möglich. Zur Ausbildung eines hydraulisch dichten Steuerraums ist die Schieberhülse mit eine Druckfeder vorgespannt, die die Schieberhülse mit einer Dichtkante gegen die Stirnfläche drückt, wobei die Stirnfläche zweckmäßigerweise an einer Zwi schenplatte ausgebildet ist, die zwischen dem Injektorkörper und dem Düsenkörper angeordnet ist. Zur Einstellung der Zwischenhubstellung ist es vorteilhaft, eine Ringscheibe vorzusehen, die im Düsenkörper angeordnet ist und die die Anschlagfläche für die Steuerhülse ausbildet. Bei einer ersten Ausführungsform ist die Düsennadel mit einem am Düsennadelkolben ausgebildeten Führungsabschnitt in der Steuerhülse und mit einem weiteren Führungsabschnitt zusätzlich im Düsenkörper und die Steuerhülse selbst in einer Führungsbohrung des Düsenkörpers axial verschiebbar geführt. Bei einer zweiten Ausführungsform ist die Düsennadel nur mit einem am Düsennadelkolben ausgebildeten Führungsabschnitt in der Steuerhülse und die Steuerhülse selbst in einer Führungsbohrung des Düsenkörpers axial verschiebbar geführt.advantageous Further developments of the invention are possible by the measures of the subclaims. to Formation of a hydraulically tight control chamber is the sliding sleeve with a compression spring biased against the sliding sleeve with a sealing edge the face suppressed, the end face expediently is formed on a inter mediate plate, between the injector body and arranged the nozzle body is. To set the Zwischenhubstellung it is advantageous to a To provide annular disc disposed in the nozzle body is and the the stop surface forms for the control sleeve. In a first embodiment is the nozzle needle with one on the nozzle needle piston trained leadership section in the control sleeve and with another guide section in addition Nozzle body and the control sleeve itself in a guide hole of the nozzle body axially slidably guided. In a second embodiment is the nozzle needle only with one at the nozzle needle piston trained leadership section in the control sleeve and the control sleeve even in a pilot hole of the nozzle body axially slidably guided.
Ausführungsbeispieleembodiments
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert.Two embodiments The invention are illustrated in the drawing and in the following Description closer explained.
Es zeigen:It demonstrate:
Der
Kraftstoffinjektor gemäß
Im
Düsenkörper
Die
Düsennadel
Im
Hochdruckraum
Beim
Ausführungsbeispiel
gemäß
In
der Zwischenplatte
Beim
Ausführungsbeispiel
in
Der
Kraftstoffinjektor gemäß
Im
geschlossenen Zustand der Einspritzöffnungen
In the closed state of injection ports
Im
geschlossenen Zustand der Düsennadel
Die
Düsennadel
Der
zweite kritische Öffnungsdruck
hängt im Wesentlichen
davon ab, wie groß der
Druck unter der Spitze der Düsennadel
Zum
Schließen
der Düsennadel
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610008647 DE102006008647A1 (en) | 2006-02-24 | 2006-02-24 | Fuel injector for internal combustion engine, has sliding sleeve that is axially and adjustably guided to coupler piston and presses with sealing edge, such that control chamber is hydraulically separated from high pressure chamber |
EP07703974A EP1989433A1 (en) | 2006-02-24 | 2007-01-18 | Fuel injector having directly actuable nozzle needle and variable actuator lift transmission |
PCT/EP2007/050478 WO2007098989A1 (en) | 2006-02-24 | 2007-01-18 | Fuel injector having directly actuable nozzle needle and variable actuator lift transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610008647 DE102006008647A1 (en) | 2006-02-24 | 2006-02-24 | Fuel injector for internal combustion engine, has sliding sleeve that is axially and adjustably guided to coupler piston and presses with sealing edge, such that control chamber is hydraulically separated from high pressure chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006008647A1 true DE102006008647A1 (en) | 2007-08-30 |
Family
ID=37814332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200610008647 Withdrawn DE102006008647A1 (en) | 2006-02-24 | 2006-02-24 | Fuel injector for internal combustion engine, has sliding sleeve that is axially and adjustably guided to coupler piston and presses with sealing edge, such that control chamber is hydraulically separated from high pressure chamber |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1989433A1 (en) |
DE (1) | DE102006008647A1 (en) |
WO (1) | WO2007098989A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2218900A1 (en) * | 2009-02-16 | 2010-08-18 | Continental Automotive GmbH | Valve assembly for an injection valve and injection valve |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2451820C1 (en) * | 2010-10-05 | 2012-05-27 | Открытое акционерное общество холдинговая компания "Коломенский завод" | Nozzle for ice |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10352736A1 (en) * | 2003-11-12 | 2005-07-07 | Robert Bosch Gmbh | Fuel injector with direct needle injection |
DE102004005456A1 (en) * | 2004-02-04 | 2005-08-25 | Robert Bosch Gmbh | Fuel injector with direct-acting injection valve member |
DE102004027824A1 (en) * | 2004-06-08 | 2006-01-05 | Robert Bosch Gmbh | Fuel injector with variable actuator ratio |
DE102004028522A1 (en) * | 2004-06-11 | 2005-12-29 | Robert Bosch Gmbh | Fuel injector with variable Aktorhubübersetzung |
DE102004031790A1 (en) * | 2004-07-01 | 2006-01-26 | Robert Bosch Gmbh | Common rail injector |
DE102005025133A1 (en) * | 2005-06-01 | 2006-12-07 | Robert Bosch Gmbh | Common rail injector |
-
2006
- 2006-02-24 DE DE200610008647 patent/DE102006008647A1/en not_active Withdrawn
-
2007
- 2007-01-18 EP EP07703974A patent/EP1989433A1/en not_active Ceased
- 2007-01-18 WO PCT/EP2007/050478 patent/WO2007098989A1/en active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2218900A1 (en) * | 2009-02-16 | 2010-08-18 | Continental Automotive GmbH | Valve assembly for an injection valve and injection valve |
Also Published As
Publication number | Publication date |
---|---|
WO2007098989A1 (en) | 2007-09-07 |
EP1989433A1 (en) | 2008-11-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |