EP1658428B1 - Fuel injection valve - Google Patents
Fuel injection valve Download PDFInfo
- Publication number
- EP1658428B1 EP1658428B1 EP04766521A EP04766521A EP1658428B1 EP 1658428 B1 EP1658428 B1 EP 1658428B1 EP 04766521 A EP04766521 A EP 04766521A EP 04766521 A EP04766521 A EP 04766521A EP 1658428 B1 EP1658428 B1 EP 1658428B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel injection
- injection valve
- seal
- valve according
- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 72
- 238000002347 injection Methods 0.000 title claims description 57
- 239000007924 injection Substances 0.000 title claims description 57
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000012809 cooling fluid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- 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
Definitions
- the invention relates to a fuel injection valve according to the preamble of the main claim ( US 2002/0157648 ).
- a fuel injection valve for direct injection of fuel into the combustion chamber of an internal combustion engine which has a device for temperature adjustment in this area to reduce deposits in the region of the valve tip.
- the device is designed in the form of a coating of a thermally conductive material on the valve tip.
- a fuel injection valve for direct injection of fuel into the combustion chamber of a mixture-compression, spark-ignited internal combustion engine known. It comprises a valve housing formed from a nozzle body and a sealing ring, the fuel injection valve against a Cylinder head of the internal combustion engine seals.
- the sealing ring is profiled convexly curved, wherein two ends of the sealing ring overlap axially stepped.
- a disadvantage of the from the DE 101 09 407 A1 known fuel injection valve is in particular the existing between fuel injector and cylinder head air gap, which only allows a reduced heat transfer. This is unfavorable for the reduction of deposits on the valve tip, since the temperature in the region of the injection openings must be as low as possible in order to avoid deposits.
- the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that a provided over the entire axial length, provided with a suitable structure seal between the cylinder head and the nozzle body is provided, on the one hand a reliable sealing effect and on the other hand effective heat dissipation from Nozzle body allows.
- the seal can also be constructed of several layers, which gives it a higher stability and less susceptible to damage during assembly.
- a cover plate may be attached, which fulfills the function of a heat shield.
- the cover plate may have an opening for the ejected fuel jets or multiple spray orifices.
- the seal is made of a metallic material of amorphous structure, whereby a smooth surface can be achieved.
- the fuel injection valve 1 is embodied in the form of a fuel injection valve for fuel injection systems of mixture-compression spark-ignition internal combustion engines.
- the fuel injection valve 1 is particularly suitable for the direct injection of fuel into a combustion chamber 2 of an internal combustion engine.
- the fuel injection valve 1 comprises a nozzle body 3, which is sealed by a sealing ring 4 against a cylinder head 5 of the internal combustion engine.
- the sealing ring 4 is for example made of an elastomer, for. As a Teflon-coated material and ensures by a slightly larger diameter compared to the nozzle body 3 for the sealing effect in the cylinder head. 5
- the fuel injection valve 1 further comprises a housing 6, an electrical plug contact 7 for actuating the fuel injection valve 1 and a fuel inlet 8, via which the fuel is supplied.
- the supply of the fuel can be done for example by means of a fuel distributor not shown.
- a disadvantage of the known from the prior art sealing rings 4 is in particular the poor heat transfer between the nozzle body 3 and the cylinder head 5 through a downstream existing air gap 9 between the fuel injector 1 and cylinder head 5.
- the lowest possible temperature in the region of the valve tip is desirable. This counteracts complete evaporation of the fuel remaining in the region of the valve tip after the injection process. If the fuel remains liquid, the combustion residues and impurities can not deposit in the area of the valve tip and are removed during the next injection cycle.
- the seals 10 described below are in common that they are corrugated and thereby on the one hand provide a good sealing effect and on the other hand a sufficiently large contact surface for effective heat transfer between the fuel injector 1 and cylinder head 5.
- the seals 10 are designed so that they are short in the non-installed state and are compressed by the installation something and thus lengthened. This allows a very good fit can be achieved.
- the seals 10 are made of a good thermal conductivity material such.
- a metal foil made with amorphous structure whereby a very smooth surface can be achieved with the advantage of a simple and damage-free installation.
- cavities 16 between the fuel injection valve 1 and the seal 10 can be used to pass a coolant.
- fuel injection valves 1 equipped with corresponding seals 10 will be described by way of example.
- the fuel injection valves 1 can be configured with the exception of the measures according to the invention similar to the fuel injection valve 1 shown in FIG. 1.
- FIG. 2 shows a first exemplary embodiment of a fuel injection valve 1 configured according to the invention.
- the seal 10 is designed as a corrugated pipe in the simplest way.
- the seal 10 is open at both ends and can be particularly easily mounted.
- the seal 10 can be preassembled on the nozzle body 3 of the fuel injection valve 1 and then used together with this in the cylinder head 5.
- FIG. 3 shows a second exemplary embodiment of a fuel injection valve 1 designed according to the invention.
- the gasket 10 is formed in this embodiment in the form of a tubular seal 10 with protuberances 11.
- the protuberances 11 are approximately semicircular in section.
- Advantage of this variant is a slightly larger contact surface on the nozzle body 3 with improved thermal conductivity.
- FIG. 4 shows a third exemplary embodiment of a fuel injection valve 1 designed according to the invention.
- the seal 10 is pleated and formed into a bellows 10.
- the thermal conductivity and sealing capacity approximately corresponds to the first embodiment described in FIG.
- FIG 5 shows a fourth exemplary embodiment of a fuel injection valve 1 designed according to the invention.
- the seal 10 is constructed of several layers 12 in the sandwich method. This increases in particular the durability of the seal 10, which can not easily distort during assembly and therefore is less susceptible to damage.
- the individual layers 12 can in turn be corrugated in each case and glued together or connected to each other only at their ends.
- the seal 10 may be designed here in section as the seals 10 according to the embodiments shown in FIGS. 2 to 5, wherein in Fig. 6, the corrugated tube shape was selected, and is additionally provided at a downstream end 13 with a cover plate 14, which an opening 15 for the injected from at least one ejection opening of the fuel injection valve 1 into the combustion chamber 2 fuel jets.
- the cover plate 14 additionally has the function of a heat shield and protects the ejection openings from the high temperature prevailing in the combustion chamber, which enhances the coking tendency of the same.
- a sixth embodiment of an inventively designed fuel injection valve 1 is shown.
- the seal 10 may here be designed as in the embodiment shown in FIG. 6 in section as the seals 10 according to the embodiments shown in FIGS. 2 to 5, wherein in Fig. 7 also the corrugated pipe shape was selected.
- the seal 10 is also provided at a downstream end 13 with a cover plate 14, in which the injection orifices can be incorporated directly.
- the cover plate 14 also takes the function of a heat shield true and protects the downstream end of the fuel injector 1 in front of the temperature prevailing in the combustion chamber.
- the invention is not limited to the illustrated embodiments and also for other cross-sectional shapes of seals 10 and for any construction of fuel injectors 1, for example, fuel injectors 1 with connection to a suction pipe or a common rail system applicable.
- the individual features of the different embodiments can be combined with one another as desired.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Hauptanspruchs (
Beispielsweise ist aus der
Nachteilig an dem aus der
Weiterhin ist aus der
Nachteilig an dem aus der
Das erfindungsgemäße Brennstoffeinspritzventil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß eine sich über die gesamte axiale Länge erstreckende, mit einer geeigneten Struktur versehene Dichtung zwischen dem Zylinderkopf und dem Düsenkörper vorgesehen ist, welche einerseits eine zuverlässige Dichtwirkung und andererseits eine effektive Wärmeableitung vom Düsenkörper ermöglicht.The fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that a provided over the entire axial length, provided with a suitable structure seal between the cylinder head and the nozzle body is provided, on the one hand a reliable sealing effect and on the other hand effective heat dissipation from Nozzle body allows.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.The measures listed in the dependent claims advantageous refinements of the fuel injection valve specified in the main claim are possible.
Von Vorteil ist insbesondere, daß beliebige Querschnitte wie z. B. Wellrohre, Faltenbälge und glatt rohrförmige Körper mit beliebig geformten Ausstülpungen möglich sind.The advantage is in particular that any cross-sections such. As corrugated pipes, bellows and smooth tubular body with arbitrarily shaped protuberances are possible.
Vorteilhafterweise kann die Dichtung auch aus mehreren Schichten aufgebaut sein, was ihr eine höhere Stabilität und geringere Beschädigungsanfälligkeit bei der Montage verleiht.Advantageously, the seal can also be constructed of several layers, which gives it a higher stability and less susceptible to damage during assembly.
Weiterhin ist von Vorteil, daß an einem abströmseitigen Ende der Dichtung ein Abdeckblech angebracht sein kann, welches die Funktion eines Hitzeschildes erfüllt. Das Abdeckblech kann eine Öffnung für die abgespritzten Brennstoffstrahlen oder mehrere Abspritzöffnungen aufweisen.Furthermore, it is advantageous that at a downstream end of the seal, a cover plate may be attached, which fulfills the function of a heat shield. The cover plate may have an opening for the ejected fuel jets or multiple spray orifices.
Vorteilhafterweise ist die Dichtung aus einem metallischen Material amorpher Struktur hergestellt, wodurch eine glatte Oberfläche erzielt werden kann.Advantageously, the seal is made of a metallic material of amorphous structure, whereby a smooth surface can be achieved.
Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
- Fig. 1
- einen schematischen Schnitt durch ein Brennstoffeinspritzventil gemäß dem Stand der Technik,
- Fig. 2
- eine schematische, teilweise geschnittene Ansicht eines ersten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 3
- eine schematische, teilweise geschnittene Ansicht eines zweiten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 4
- eine schematische, teilweise geschnittene Ansicht eines dritten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 5
- eine schematische, teilweise geschnittene Ansicht eines vierten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils,
- Fig. 6
- eine schematische, teilweise geschnittene Ansicht eines fünften Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils, und
- Fig. 7
- eine schematische, teilweise geschnittene Ansicht eines sechsten Ausführungsbeispiels eines erfindungsgemäßen Brennstoffeinspritzventils.
- Fig. 1
- a schematic section through a fuel injection valve according to the prior art,
- Fig. 2
- a schematic, partially sectioned view of a first embodiment of a fuel injection valve according to the invention,
- Fig. 3
- a schematic, partially sectioned view of a second embodiment of a fuel injection valve according to the invention,
- Fig. 4
- a schematic, partially sectioned view of a third embodiment of a fuel injection valve according to the invention,
- Fig. 5
- a schematic, partially sectioned view of a fourth embodiment of a fuel injection valve according to the invention,
- Fig. 6
- a schematic, partially sectioned view of a fifth embodiment of a fuel injection valve according to the invention, and
- Fig. 7
- a schematic, partially sectioned view of a sixth embodiment of a fuel injection valve according to the invention.
Bevor anhand der Fig. 2 bis 7 bevorzugte Ausführungsbeispiele eines erfindungsgemäßen Brennstoffeinspritzventils 1 näher beschrieben werden, soll zum besseren Verständnis der Erfindung zunächst anhand von Fig. 1 ein Brennstoffeinspritzventil 1 gemäß dem Stand der Technik bezüglich seiner wesentlichen Bauteile kurz erläutert werden.Before describing preferred embodiments of a
Das Brennstoffeinspritzventil 1 ist in der Form eines Brennstoffeinspritzventils für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen ausgeführt. Das Brennstoffeinspritzventil 1 eignet sich insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum 2 einer Brennkraftmaschine.The
Das Brennstoffeinspritzventil 1 umfaßt einen Düsenkörper 3, welcher durch einen Dichtring 4 gegen einen Zylinderkopf 5 der Brennkraftmaschine abgedichtet ist. Der Dichtring 4 ist beispielsweise aus einem Elastomer, z. B. einem teflonbeschichteten Material hergestellt und sorgt durch einen geringfügig größeren Durchmesser im Vergleich zum Düsenkörper 3 für die Dichtwirkung im Zylinderkopf 5.The
Das Brennstoffeinspritzventil 1 umfaßt weiter ein Gehäuse 6, eine elektrischen Steckkontakt 7 zur Betätigung des Brennstoffeinspritzventils 1 und einen Brennstoffzulauf 8, über welchen der Brennstoff zugeführt wird. Die Zuleitung des Brennstoffs kann dabei beispielsweise mittels einer nicht weiter dargestellten Brennstoffverteilerleitung erfolgen.The
Nachteilig an den aus dem Stand der Technik bekannten Dichtringen 4 ist dabei insbesondere der schlechte Wärmeübergang zwischen Düsenkörper 3 und Zylinderkopf 5 durch einen abströmseitig vorhandenen Luftspalt 9 zwischen Brennstoffeinspritzventil 1 und Zylinderkopf 5. Um der bei direkteinspritzenden Brennstoffeinspritzventilen 1 durch die hohen Temperaturen im Brennraum 2 drohenden Verkokung der Abspritzöffnungen zu begegnen, ist eine möglichst geringe Temperatur im Bereich der Ventilspitze wünschenswert. Dadurch wird einer vollständigen Verdampfung des nach dem Einspritzvorgang im Bereich der Ventilspitze verbliebenen Brennstoffs entgegengewirkt. Bleibt der Brennstoff flüssig, können sich die Verbrennungsrückstände und Verunreinigungen nicht im Bereich der Ventilspitze ablagern und werden beim nächsten Einspritzzyklus abtransportiert.A disadvantage of the known from the prior art sealing rings 4 is in particular the poor heat transfer between the
Dem mangelnden Wärmeübergang zwischen Brennstoffeinspritzventil 1 und Zylinderkopf 5 wirkt eine erfindungsgemäß ausgestaltete Dichtung 10 wie in den Fig. 2 bis 7 in bevorzugten Ausführungsbeispielen dargestellt entgegen.The lack of heat transfer between the
Den im folgenden beschriebenen Dichtungen 10 ist dabei gemeinsam, daß sie wellrohrförmig ausgeführt sind und dadurch einerseits eine gute Dichtwirkung und andererseits eine ausreichend große Anlagefläche für einen effektiven Wärmeübergang zwischen Brennstoffeinspritzventil 1 und Zylinderkopf 5 bieten. Die Dichtungen 10 sind dabei so konzipiert, daß sie in nicht eingebautem Zustand kurz und breit sind und durch den Einbau etwas zusammengedrückt und damit gelängt werden. Dadurch kann eine sehr gute Passung erzielt werden.The
Die Dichtungen 10 sind dabei aus einem gut wärmeleitfähigen Material wie z. B. einer Metallfolie mit amorpher Struktur gefertigt, wodurch eine sehr glatte Oberfläche mit dem Vorteil einer einfachen und beschädigungsfreien Montage erzielt werden kann.The
Durch die verschiedenen Querschnittsformen ausgebildete Hohlräume 16 zwischen dem Brennstoffeinspritzventil 1 und der Dichtung 10 können zur Durchleitung einen Kühlmittels genutzt werden.Formed by the different
Im folgenden werden Ausführungsbeispiele für mit entsprechenden Dichtungen 10 ausgestattete Brennstoffeinspritzventile 1 beispielhaft beschrieben. Die Brennstoffeinspritzventile 1 können dabei mit Ausnahme der erfindungsgemäßen Maßnahmen ähnlich wie das in Fig. 1 dargestellte Brennstoffeinspritzventil 1 ausgestaltet sein.In the following, exemplary embodiments of
Fig. 2 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1. Die Dichtung 10 ist hier in einfachster Weise wellrohrförmig ausgestaltet. Die Dichtung 10 ist dabei an beiden Enden offen und kann dadurch besonders einfach montiert werden. Die Dichtung 10 kann an dem Düsenkörper 3 des Brennstoffeinspritzventils 1 vormontiert und dann mit diesem gemeinsam in den Zylinderkopf 5 eingesetzt werden.FIG. 2 shows a first exemplary embodiment of a
Fig. 3 zeigt ein zweites Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1. Die Dichtung 10 ist in diesem Ausführungsbeispiel in Form einer rohrförmigen Dichtung 10 mit Ausstülpungen 11 ausgebildet. Die Ausstülpungen 11 sind im Schnitt dabei etwa halbkreisförmig. Vorteil dieser Variante ist eine etwas größere Anlagefläche am Düsenkörper 3 mit einer verbesserten Wärmeleitfähigkeit.3 shows a second exemplary embodiment of a
Fig. 4 zeigt ein drittes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1. Die Dichtung 10 ist in diesem Fall gefältelt ausgeführt und zu einem Faltenbalg 10 geformt. Die Wärmeleitfähigkeit und Dichtfähigkeit entspricht etwa dem in Fig. 2 beschriebenen ersten Ausführungsbeispiel.4 shows a third exemplary embodiment of a
Fig. 5 zeigt ein viertes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1.5 shows a fourth exemplary embodiment of a
Hier ist die Dichtung 10 im Sandwichverfahren aus mehreren Schichten 12 aufgebaut. Dies erhöht insbesondere die Haltbarkeit der Dichtung 10, welche sich bei der Montage nicht so leicht verziehen kann und daher weniger beschädigungsanfällig ist. Die einzelnen Schichten 12 können wiederum jeweils wellrohrförmig ausgeführt und miteinander verklebt oder nur an ihren Enden miteinander verbunden sein.Here, the
In Fig. 6 ist ein fünftes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1 dargestellt. Die Dichtung 10 kann hier im Schnitt wie die Dichtungen 10 gemäß den in den Fig. 2 bis 5 dargestellten Ausführungsbeispielen gestaltet sein, wobei in Fig. 6 die Wellrohrform gewählt wurde, und ist zusätzlich an einem abströmseitigen Ende 13 mit einem Abdeckblech 14 versehen, welches eine Öffnung 15 für die aus zumindest einer Abspritzöffnung des Brennstoffeinspritzventils 1 in den Brennraum 2 eingespritzten Brennstoffstrahlen aufweist. Das Abdeckblech 14 hat dabei zusätzlich die Funktion eines Hitzeschildes und schützt die Abspritzöffnungen vor der im Brennraum herrschenden hohen Temperatur, welche die Verkokungsneigung derselben verstärkt.6, a fifth embodiment of an inventively designed
In Fig. 7 ist ein sechstes Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Brennstoffeinspritzventils 1 dargestellt. Die Dichtung 10 kann hier wie in dem in Fig. 6 dargestellten Ausführungsbeispiel im Schnitt wie die Dichtungen 10 gemäß den in den Fig. 2 bis 5 dargestellten Ausführungsbeispielen gestaltet sein, wobei in Fig. 7 ebenfalls die Wellrohrform gewählt wurde. Die Dichtung 10 ist ebenfalls an einem abströmseitigen Ende 13 mit einem Abdeckblech 14 versehen, in welches die Abspritzöffnungen direkt eingearbeitet sein können. Das Abdeckblech 14 nimmt dabei ebenfalls die Funktion eines Hitzeschildes wahr und schützt das abströmseitige Ende des Brennstoffeinspritzventils 1 vor der im Brennraum herrschenden Temperatur.In Fig. 7, a sixth embodiment of an inventively designed
Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt und auch für andere Querschnittsformen von Dichtungen 10 sowie für beliebige Bauweisen von Brennstoffeinspritzventilen 1, beispielsweise für Brennstoffeinspritzventile 1 mit Anbindung an ein Saugrohr oder ein Common-Rail-System, anwendbar. Insbesondere sind die einzelnen Merkmale der unterschiedlichen Ausführungsbeispiele beliebig miteinander kombinierbar.The invention is not limited to the illustrated embodiments and also for other cross-sectional shapes of
Claims (12)
- Fuel injection valve (1) for the direct injection of fuel into the combustion chamber of a mixture-compressing, spark-ignition internal combustion engine, having a valve housing which comprises a nozzle body (3), and having a seal (10) which seals the fuel injection valve (1) which is inserted into a receptacle hole of a cylinder head (5) with respect to the cylinder head (5) of the internal combustion engine, the seal (10) being of sleeve-shaped configuration with a structured cross section and extending over the axial length of the nozzle body (3), characterized in that the seal (10) is in direct contact over its length both with the nozzle body (3) of the fuel injection valve (1) and with the wall of the receptacle hole of the cylinder head (5), in order to achieve a reliable sealing action and particularly effective heat dissipation from the nozzle body (3).
- Fuel injection valve according to Claim 1, characterized in that the seal (10) is configured in the shape of a corrugated tube.
- Fuel injection valve according to Claim 1, characterized in that the seal (10) is of tubular configuration with protuberances (11).
- Fuel injection valve according to Claim 3, characterized in that the protuberances (11) have a semicircular cross section.
- Fuel injection valve according to Claim 1, characterized in that the seal (10) is folded in the shape of a folding bellows.
- Fuel injection valve according to Claim 1, characterized in that the seal (10) is constructed from a plurality of layers (12).
- Fuel injection valve according to one of Claims 1 to 6, characterized in that the seal (10) has a covering plate (14) at one downstream end (13).
- Fuel injection valve according to Claim 7, characterized in that the covering plate (14) has an opening (15).
- Fuel injection valve according to Claim 8, characterized in that the opening (15) serves as a passage for fuel jets which are injected into the combustion chamber.
- Fuel injection valve according to Claim 7, characterized in that the covering plate (14) is provided with a plurality of ejection openings.
- Fuel injection valve according to one of Claims 1 to 10, characterized in that the seal (10) is manufactured from a metal foil having an amorphous structure and a smooth surface.
- Fuel injection valve according to one of Claims 1 to 11, characterized in that a cooling fluid flows through hollow spaces (16) which are formed between the seal (10) and the nozzle body (3) and/or between the seal (10) and the cylinder head (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10337892A DE10337892A1 (en) | 2003-08-18 | 2003-08-18 | Fuel injector |
| PCT/EP2004/051820 WO2005019640A1 (en) | 2003-08-18 | 2004-08-18 | Fuel injection valve |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1658428A1 EP1658428A1 (en) | 2006-05-24 |
| EP1658428B1 true EP1658428B1 (en) | 2007-11-14 |
| EP1658428B8 EP1658428B8 (en) | 2008-01-23 |
Family
ID=34201626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04766521A Expired - Lifetime EP1658428B8 (en) | 2003-08-18 | 2004-08-18 | Fuel injection valve |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7261089B2 (en) |
| EP (1) | EP1658428B8 (en) |
| JP (1) | JP4537398B2 (en) |
| DE (2) | DE10337892A1 (en) |
| WO (1) | WO2005019640A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10354465B4 (en) * | 2003-11-21 | 2014-07-17 | Robert Bosch Gmbh | Fuel injector |
| DE102005006641A1 (en) * | 2005-02-14 | 2006-08-24 | Siemens Ag | Injection valve for injecting fuel and cylinder head |
| DE102006009094A1 (en) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Damper for use between cylinder head and injector in region of injector foot, has sub-functional section e.g. inner ring and outer ring, for fixing injector with respect to cylinder head, where damper is formed as multipart structure |
| US7334571B1 (en) * | 2006-08-31 | 2008-02-26 | Gm Global Technology Operations, Inc. | Isolation system for high pressure spark ignition direct injection fuel delivery components |
| FR2906576B1 (en) * | 2006-10-03 | 2011-03-04 | Renault Sas | COOLING ARRANGEMENT OF AN INJECTOR COMPRISING A WASHER STACK. |
| FR2907854B1 (en) * | 2006-10-25 | 2008-12-26 | Renault Sas | COOLING ARRANGEMENT OF AN INJECTOR COMPRISING TWO BITTER SPRINGS IN EACH OTHER |
| US7406946B1 (en) | 2007-04-02 | 2008-08-05 | Hitachi, Ltd. | Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber |
| US7527038B2 (en) * | 2007-04-02 | 2009-05-05 | Hitachi, Ltd | Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber |
| CN101675241B (en) * | 2007-05-02 | 2014-12-17 | 罗伯特·博世有限公司 | Internal combustion engine with sealing protection for a fuel injection valve |
| US7513242B2 (en) * | 2007-05-03 | 2009-04-07 | Cummins Inc. | Fuel injector assembly with injector seal retention |
| JP2010138778A (en) * | 2008-12-11 | 2010-06-24 | Mitsubishi Heavy Ind Ltd | Cooling structure of fuel injection valve |
| DE102009029088A1 (en) * | 2009-09-02 | 2011-03-03 | Robert Bosch Gmbh | Fuel injection arrangement with optimized thermal coupling between the fuel injector and the cylinder head |
| US9382887B2 (en) | 2009-09-23 | 2016-07-05 | Cummins Intellectual Property. Inc. | Engine component seal assembly and method of sealing a coolant passage from an engine component |
| CN102510944B (en) * | 2009-09-23 | 2014-07-09 | 康明斯知识产权有限公司 | Injector seal assembly and method of sealing a coolant passage from an injector |
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| US20150059322A1 (en) * | 2013-08-30 | 2015-03-05 | Continental Automotive Systems, Inc. | Liquid cooled reductant delivery unit for automotive selective catalytic reduction systems |
| US9453486B1 (en) * | 2015-03-20 | 2016-09-27 | Continental Automotive Systems, Inc. | Gas direct injector with reduced leakage |
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| GB730432A (en) | 1952-05-17 | 1955-05-25 | Maschf Augsburg Nuernberg Ag | Improvements in and relating to fuel injection internal combustion engines |
| DE3000061C2 (en) * | 1980-01-03 | 1993-10-14 | Bosch Gmbh Robert | Fuel injection nozzle for internal combustion engines |
| FR2659115B1 (en) * | 1990-03-02 | 1992-05-15 | Procal | SEAL FOR INJECTOR OF INTERNAL COMBUSTION ENGINE. |
| US5381600A (en) * | 1993-10-06 | 1995-01-17 | Ford Motor Company | Heat exchanger and method of making the same |
| JPH1089192A (en) | 1996-09-10 | 1998-04-07 | Toyota Central Res & Dev Lab Inc | Deposit reducing-type fuel injection valve |
| US6009856A (en) * | 1998-05-27 | 2000-01-04 | Caterpillar Inc. | Fuel injector isolation |
| JP2000145581A (en) * | 1998-11-13 | 2000-05-26 | Sanshin Ind Co Ltd | Direct injection engine |
| DE19955896A1 (en) * | 1999-11-20 | 2001-05-31 | Daimler Chrysler Ag | Fuel injection jet for internal combustion engine, with push-out path of deflector bush on jet neck limited by stop at transition from annular cavity to annular gap |
| DE19962968A1 (en) * | 1999-12-24 | 2001-06-28 | Bosch Gmbh Robert | Compensating element for a fuel injection valve of an internal combustion engine comprises a compensating sleeve which is provided with a flexible section between its connector and support sections |
| DE50110145D1 (en) * | 2001-01-12 | 2006-07-27 | Ford Global Tech Inc | Noise-reducing arrangement of washers under an injection nozzle |
| DE10109407A1 (en) | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Fuel injector |
| DE10329121A1 (en) * | 2003-06-27 | 2005-01-20 | Siemens Ag | vent |
-
2003
- 2003-08-18 DE DE10337892A patent/DE10337892A1/en not_active Withdrawn
-
2004
- 2004-08-18 JP JP2006523635A patent/JP4537398B2/en not_active Expired - Fee Related
- 2004-08-18 US US10/566,534 patent/US7261089B2/en not_active Expired - Fee Related
- 2004-08-18 DE DE502004005519T patent/DE502004005519D1/en not_active Expired - Lifetime
- 2004-08-18 EP EP04766521A patent/EP1658428B8/en not_active Expired - Lifetime
- 2004-08-18 WO PCT/EP2004/051820 patent/WO2005019640A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| US7261089B2 (en) | 2007-08-28 |
| EP1658428B8 (en) | 2008-01-23 |
| DE10337892A1 (en) | 2005-03-17 |
| WO2005019640A1 (en) | 2005-03-03 |
| US20070000480A1 (en) | 2007-01-04 |
| EP1658428A1 (en) | 2006-05-24 |
| JP2007502931A (en) | 2007-02-15 |
| DE502004005519D1 (en) | 2007-12-27 |
| JP4537398B2 (en) | 2010-09-01 |
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