DE102008001281A1 - injector - Google Patents
injector Download PDFInfo
- Publication number
- DE102008001281A1 DE102008001281A1 DE200810001281 DE102008001281A DE102008001281A1 DE 102008001281 A1 DE102008001281 A1 DE 102008001281A1 DE 200810001281 DE200810001281 DE 200810001281 DE 102008001281 A DE102008001281 A DE 102008001281A DE 102008001281 A1 DE102008001281 A1 DE 102008001281A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- space
- control valve
- injector
- valve body
- 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- Withdrawn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
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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
- F02M63/008—Hollow valve members, e.g. members internally guided
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Zwischen der Ausgangsseite eines Steuerventils (13) und einem Ablaufraum (5) ist ein Übergangsraum (19) angeordnet, der mit dem Ablaufraum nur über einen drosselwirksamen Weg (20) kommuniziert.Between the output side of a control valve (13) and a discharge space (5) a transition space (19) is arranged, which communicates with the discharge space only via a throttle effective path (20).
Description
Technisches GebietTechnical area
Die Erfindung bezieht sich auf einen Injektor zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine entsprechend dem Oberbegriff des Anspruches 1.The The invention relates to an injector for injecting fuel in a combustion chamber of an internal combustion engine according to the preamble of claim 1.
Derartige Injektoren werden bei sog. Common-Rail-Systemen serienmäßig eingesetzt.such Injectors are used as standard in so-called common-rail systems.
Auch wenn sich derartige Systeme einschließlich der zugehörigen Injektoren bewährt haben, bleiben Verbesserungen wünschenswert. Denn einerseits treten beim Schließen des Ventilgliedes des Steuerventils aufgrund der schnellen Schaltbewegungen Prellschläge auf, andererseits können beim Öffnen dieses Ventilgliedes auf der Niederdruckseite des Injektors unerwünschte Schwingungen erzeugt werden.Also if such systems including the associated injectors proven improvements remain desirable. Because on the one hand occur when closing the valve member of the control valve due to the fast switching movements bouncing, On the other hand, when opening this Valve member on the low pressure side of the injector undesirable vibrations be generated.
Offenbarung der ErfindungDisclosure of the invention
Deshalb ist es Aufgabe der Erfindung, einen Injektor mit besonders gutem Schaltverhalten zu schaffen.Therefore It is an object of the invention to provide an injector with particularly good To create switching behavior.
Diese Aufgabe wird bei einem Injektor der eingangs angegebenen Art durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.These Task is in an injector of the type specified by the characterizing features of claim 1 solved.
Die Erfindung beruht auf dem allgemeinen Gedanken, die Schließbewegung des Ventilgliedes des Steuerventils zu dämpfen. Dabei wird die Tatsache ausgenutzt, dass das Ventilglied des Steuerventils innerhalb eines durch den Übergangsraum und die Eingangsseite des Steuerventils gebildeten Gesamtraumes nach Art eines Verdrängers arbeiten kann, wobei der Schließhub des Ventilkörpers des Steuerventils gegen den von den Drosselstellen des Übergangsraumes verursachten Gegendruck im vorgenannten Gesamtraum erfolgt und dementsprechend verzögert, d. h. gedämpft, wird.The Invention is based on the general idea, the closing movement to damp the valve member of the control valve. This is the fact exploited that the valve member of the control valve within a through the transitional space and the input side of the control valve formed total space in the manner of a repressor can work, with the closing stroke of the valve body of the control valve against that of the throttle points of the transitional space caused back pressure occurs in the aforementioned total space and accordingly delayed d. H. steamed, becomes.
Gemäß einer vorteilhaften Ausführungsform der Erfindung kann vorgesehen sein, dass das Steuerventil in grundsätzlich bekannter Weise einen ringförmigen Ventilsitz sowie einen damit zusammenwirkenden hülsenförmigen Ventilkörper aufweist, wobei der Übergangsraum konzentrisch zum Ventilkörper angeordnet ist.According to one advantageous embodiment of the Invention may be provided that the control valve in basically known Way an annular Having valve seat and a cooperating sleeve-shaped valve body, being the transitional space arranged concentrically to the valve body is.
Dabei kann der Ventilsitz des Steuerventils an einem Ventilsitzkörper angeordnet sein, welcher im Injektorkörper als Trennwand zwischen dem Zuströmraum und dem Abströmraum angeordnet ist. Gemäß einer besonders bevorzugten Ausführungsform der Erfindung kann der Übergangsraum ein in den Abströmraum mündendes Druckbegrenzungsventil aufweisen, wobei dessen Schließkörper als auf dem hülsenförmigen Ventilkörper des Steuerventils verschiebbare Hülse ausgebildet sein kann.there the valve seat of the control valve can be arranged on a valve seat body be, which in the injector body as a partition between the inflow space and the outflow space is arranged. According to one particularly preferred embodiment The invention can be the transitional space one in the outflow space which opens Have pressure relief valve, wherein the closing body as on the sleeve-shaped valve body of Control valve sliding sleeve can be trained.
Im übrigen wird hinsichtlich bevorzugter Merkmale der Erfindung auf die Ansprüche sowie die nachfolgende Erläuterung der Zeichnung verwiesen, anhand der besonders bevorzugte Ausführungsformen der Erfindung näher erläutert werden.Otherwise, will in terms of preferred features of the invention to the claims and the following explanation referred to the drawing, based on the particularly preferred embodiments closer to the invention explained become.
Schutz wird nicht nur für ausdrücklich dargestellte Merkmalskombinationen sondern auch für prinzipiell beliebige Kombinationen der dargestellten oder angegebenen Einzelmerkmale beansprucht.protection will not only for expressly illustrated feature combinations but also in principle any combination of the illustrated or indicated individual features claimed.
Erläuterung der Zeichnungexplanation the drawing
In der Zeichnung zeigtIn the drawing shows
Der
Kraftstoffinjektor der
Der
Steuerraum
Auf
der dem Ablaufraum
Der
in
Wenn
die Düsennadel
If the nozzle needle
Wenn
nun zu Beginn einer Einspritzphase die Düsennadel
Innerhalb
des von dem Übergangsraum
Wenn
der Elektromagnet
Desweiteren
ist vorteilhaft, dass durch die Drosselwirkung der Drosselbohrungen
Die
Ausführungsform
der
Auf
diese Weise wird der im Übergangsraum
Im übrigen gelten
für die
Ausführungsform der
Die
Ausführungsform
der
Desweiteren
zeigt die
Desweiteren
ist der Boden
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810001281 DE102008001281A1 (en) | 2008-04-21 | 2008-04-21 | injector |
PCT/EP2009/051233 WO2009130063A1 (en) | 2008-04-21 | 2009-02-04 | Injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810001281 DE102008001281A1 (en) | 2008-04-21 | 2008-04-21 | injector |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008001281A1 true DE102008001281A1 (en) | 2009-10-22 |
Family
ID=40433915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810001281 Withdrawn DE102008001281A1 (en) | 2008-04-21 | 2008-04-21 | injector |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008001281A1 (en) |
WO (1) | WO2009130063A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017207134A1 (en) * | 2016-06-01 | 2017-12-07 | Robert Bosch Gmbh | Fuel injection valve |
EP3333408A1 (en) * | 2016-12-06 | 2018-06-13 | Robert Bosch GmbH | Electromagnetically operated control valve for a fuel injector, fuel injector |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1289794B1 (en) * | 1996-12-23 | 1998-10-16 | Elasis Sistema Ricerca Fiat | IMPROVEMENTS TO AN ELECTROMAGNETICALLY OPERATED DOSING VALVE FOR A FUEL INJECTOR. |
DE10052604A1 (en) * | 2000-10-24 | 2002-05-02 | Bosch Gmbh Robert | Solenoid valve for control of injection valve of IC engine with solenoid and movable armature and control valve element working together with valve seat for opening/closing fuel |
EP1612406B1 (en) * | 2004-06-30 | 2008-06-04 | C.R.F. Società Consortile per Azioni | An injection system for an internal combustion engine |
DE102006021741A1 (en) * | 2006-05-10 | 2007-11-15 | Robert Bosch Gmbh | Fuel injector with pressure compensated control valve |
-
2008
- 2008-04-21 DE DE200810001281 patent/DE102008001281A1/en not_active Withdrawn
-
2009
- 2009-02-04 WO PCT/EP2009/051233 patent/WO2009130063A1/en active Application Filing
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017207134A1 (en) * | 2016-06-01 | 2017-12-07 | Robert Bosch Gmbh | Fuel injection valve |
CN109312702A (en) * | 2016-06-01 | 2019-02-05 | 罗伯特·博世有限公司 | Fuel injection valve |
KR20190014508A (en) * | 2016-06-01 | 2019-02-12 | 로베르트 보쉬 게엠베하 | Fuel injection valve |
KR102303559B1 (en) * | 2016-06-01 | 2021-09-23 | 로베르트 보쉬 게엠베하 | fuel injection valve |
EP3333408A1 (en) * | 2016-12-06 | 2018-06-13 | Robert Bosch GmbH | Electromagnetically operated control valve for a fuel injector, fuel injector |
Also Published As
Publication number | Publication date |
---|---|
WO2009130063A1 (en) | 2009-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20150128 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |