DE102007045258A1 - Internal-combustion engine, has heat conducting body formed in such manner that thermal energy is conducted to cylinder head by high pressure injecting valve and is elastically deformable in radial direction - Google Patents
Internal-combustion engine, has heat conducting body formed in such manner that thermal energy is conducted to cylinder head by high pressure injecting valve and is elastically deformable in radial direction Download PDFInfo
- Publication number
- DE102007045258A1 DE102007045258A1 DE102007045258A DE102007045258A DE102007045258A1 DE 102007045258 A1 DE102007045258 A1 DE 102007045258A1 DE 102007045258 A DE102007045258 A DE 102007045258A DE 102007045258 A DE102007045258 A DE 102007045258A DE 102007045258 A1 DE102007045258 A1 DE 102007045258A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion engine
- internal combustion
- engine according
- conducting body
- heat
- 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.)
- Granted
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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
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- 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
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- 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
- F02M2200/16—Sealing of fuel injection apparatus 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8038—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of adhesives, glue or the like
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- 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
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/07—Nozzles and injectors with controllable fuel supply
- F02M2700/077—Injectors having cooling or heating means
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine mit einem Zylinderkopf, welcher einen Brennraum wenigstens eines Arbeitszylinders begrenzt, und mit wenigstens einem Hockdruckeinspritzventil pro Arbeitszylinder für Kraftstoff, welches in einer Öffnung des Zylinderkopfes derart angeordnet ist, dass es Kraftstoff direkt in einen Brennraum eines Arbeitszylinders einspritzt, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an internal combustion engine with a cylinder head, which limits a combustion chamber of at least one working cylinder, and with at least one high pressure injector per cylinder for fuel, which in an opening of the Cylinder head is arranged so that it directly fuel injected into a combustion chamber of a working cylinder, according to the preamble of claim 1
Bei einer Brennkraftmaschine mit Hockdruckeinspritzventilen für flüssigen Kraftstoff, wie beispielsweise Benzin, kann es beim Einsatz von Gas als Treibstoff mittels separater Gasdüse zu einem Temperaturanstieg der Hockdruckeinspritzventile kommen, da kein flüssiger Kraftstoff das Hockdruckeinspritzventil durchströmt und kühlt. Dadurch kann es passieren, dass die Hockdruckeinspritzventile unzulässig hohen Temperaturen ausgesetzt werden.at an internal combustion engine with high pressure injection valves for liquid fuel, such as gasoline, it can be when using gas as fuel by means of a separate gas nozzle come to a rise in temperature of the high-pressure injection valves, there is no liquid Fuel flows through the high-pressure injection valve and cools. This can happen that the high-pressure injection valves exposed to impermissibly high temperatures become.
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine der o. g. Art hinsichtlich Aufbau und thermischer Eigenschaften bzgl. des Hockdruckeinspritzventils zu verbessern.Of the Invention is the object of an internal combustion engine of o. g. Type with respect to structure and thermal properties regarding. of the high pressure injector.
Diese Aufgabe wird erfindungsgemäß durch eine Brennkraftmaschine der o. g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by a Internal combustion engine o. G. Type with the characterized in claim 1 Characteristics solved. Advantageous embodiments of the invention are in the other claims described.
Dazu ist es bei einer Brennkraftmaschine der o. g. Art erfindungsgemäß vorgesehen, dass in der Öffnung des Zylinderkopfes zwischen einer Wandung des Zylinderkopfes und einer Wandung des Hockdruckeinspritzventils ein Wärmeleitkörper angeordnet ist, welcher derart ausgebildet ist, dass dieser thermische Energie von dem Hockdruckeinspritzventil zum Zylinderkopf leitet und in radialer Richtung elastisch verformbar ist.To it is in an internal combustion engine o. g. Art provided according to the invention, that in the opening the cylinder head between a wall of the cylinder head and a wall of the high pressure injection valve arranged a heat conducting body is, which is designed such that this thermal energy from the high pressure injection valve to the cylinder head and in Radial direction is elastically deformable.
Dies hat den Vorteil, dass unabhängig von Toleranzen und Wärmeausdehnung ein enger mechanischer Kontakt zwischen dem Hockdruckeinspritzventil und dem Zylinderkopf vorhanden ist, so dass eine gute Wärmeleitung von dem Hockdruckeinspritzventil zum Zylinderkopf mit entsprechender Kühlung des Hockdruckeinspritzventils sichergestellt ist. Dies verhindert auf einfache und wirksame Weise eine thermische Überbelastung des Hockdruckeinspritzventils.This has the advantage of being independent of tolerances and thermal expansion a close mechanical contact between the high pressure injector and the cylinder head is present, allowing good heat conduction from the high-pressure injection valve to the cylinder head with appropriate cooling of the High pressure injection valve is ensured. This prevents simple and effective way a thermal overload of the high pressure injector.
In einer bevorzugten Ausführungsform umfasst der Wärmeleitkörper mehrere, insbesondere zwei oder vier, separate Teile, wobei ein in radialer Richtung elastisch verformbares Halteelement vorgesehen ist, welches die Teile zusammen hält.In a preferred embodiment the heat-conducting body comprises several, in particular two or four, separate parts, one in the radial direction is provided elastically deformable retaining element, which is the Parts together.
Das Haltelement ist beispielsweise ein Sprengring oder eine Haltefeder, welche bevorzugt kleeblattförmig ausgebildet ist.The Holding element is for example a snap ring or a retaining spring, which prefers cloverleaf-shaped is trained.
In einer alternativen bevorzugten Ausführungsform ist der Wärmeleitkörper einstückig ausgebildet und weist wenigstens einen in axialer Richtung verlaufenden Schlitz auf. Dieser Schlitz erstreckt sich über die gesamte axiale Länge des Wärmeleitkörpers. Alternativ sind zwei oder mehr Schlitze vorgesehen, welche sich jeweils nur über einen Teil der axialen Länge des Wärmeleitkörpers erstrecken.In an alternative preferred embodiment, the heat conducting body is integrally formed and has at least one axially extending slot on. This slot extends over the entire axial length of the Thermal conductor. alternative two or more slots are provided, each of which has only one Part of the axial length extend the Wärmeleitkörpers.
In einer weiteren alternativen Ausführungsform umfasst der Wärmeleitkörper mehrere, insbesondere acht, separate Teile, wobei die Teile in radialer Richtung mittels eines elastisch verformbaren Werkstoffes miteinander unlösbar verbunden sind. Dieser elastisch verformbare Werkstoffe ist beispielsweise ein Elastomer.In a further alternative embodiment the heat-conducting body comprises several, in particular eight, separate parts, wherein the parts in the radial direction connected by means of an elastically deformable material undetachably are. This elastically deformable materials is for example an elastomer.
Einen guten Sitz und engen mechanischen Kontakt erzielt man dadurch, dass der Wärmeleitkörper an seiner der Wandung des Zylinderkopfes zugewandten Fläche und/oder an seiner der Wandung des Hockdruckeinspritzventils zugewandten Fläche konische ausgebildet ist.a good fit and close mechanical contact can be achieved by that the heat-conducting body its the wall of the cylinder head facing surface and / or facing at its the wall of the high pressure injector Surface conical is trained.
Eine entsprechende Andruckkraft für den Wärmeleitkörper mit entsprechend verbesserter Leitung von thermischer Energie erzielt man dadurch, dass zusätzlich ein Federelement angeordnet ist, welches sich am Hockdruckeinspritzventil abstützt und auf den Wärmeleitkörper eine Kraft in axialer Richtung ausübt. Hierdurch wird der Wärmeleitkörper in axialer Richtung in den Sitz im Zylinderkopf gedrückt.A corresponding pressure force for the heat-conducting body with achieved correspondingly improved thermal energy conduction one by that, in addition a spring element is arranged, which is located on the high-pressure injection valve supports and on the heat conducting body a Exerts force in the axial direction. As a result, the heat-conducting body in axial direction pressed into the seat in the cylinder head.
Dieses Federelement ist beispielsweise als Tellerfeder ausgebildet.This Spring element is designed for example as a plate spring.
Der Wärmeleitkörper ist bevorzugt aus einem wärmeleitfähigen Gestrick oder einem wärmeleitfähigen Werkstoff ausgebildet.Of the Wärmeleitkörper is preferably made of a thermally conductive knitted fabric or a thermally conductive material educated.
Zur weiteren Verbesserung der Wärmeleitung ist der Wärmeleitkörper mit einem wärmeleitfähigen Werkstoff, insbesondere einer Kupferpaste, versehen.to further improvement of heat conduction is the heat-conducting body with a thermally conductive material, in particular a copper paste provided.
In einer besonders bevorzugten Ausführungsform weist der Wärmeleitkörper wenigstens eine in radialer Richtung nach innen hervorstehende Haltenase auf, die in eine entsprechende Nut an der Wandung des Hockdruckeinspritzventils radial eingreift.In a particularly preferred embodiment the heat-conducting body has at least one in the radial direction inwardly projecting retaining lug, the in a corresponding groove on the wall of the high pressure injector engages radially.
Zweckmäßigerweise weist der Wärmeleitkörper ein Abdichtelement auf, welches in der Öffnung des Zylinderkopfes eine Abdichtung des Brennraumes ausbildet.Conveniently, the heat-conducting body on a sealing element, which in the opening of the cylinder head, a seal of the Brenn space forms.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt inThe The invention will be explained in more detail below with reference to the drawing. These shows in
Die
in
Erfindungsgemäß ist in
der Öffnung
Der
Wärmeleitkörper
In
einer bevorzugten Weiterbildung der Erfindung ist der Wärmeleitkörper mit
einem dichtenden Element ausgebildet, welches eine Abdichtung des Brennraumes
gegenüber
dem Hockdruckeinspritzventil
- 1010
- Zylinderkopfcylinder head
- 1212
- HockdruckeinspritzventilHigh-pressure injection valve
- 1414
- Öffnungopening
- 1616
- Kraftstoff-EinspritzstrahlFuel injection jet
- 100100
- Wärmeleitkörperthermal conductors
- 102102
- Teil der konischen Hülsepart the conical sleeve
- 104104
- Sprengringsnap ring
- 106106
- TellerfederBelleville spring
- 200200
- Wärmeleitkörperthermal conductors
- 202202
- Teil der konischen Hülsepart the conical sleeve
- 204204
- kleeblattförmige Haltefedercloverleaf-shaped retaining spring
- 208208
- Haltenaseretaining nose
- 300300
- Wärmeleitkörperthermal conductors
- 302302
- axiale Schlitzaxial slot
- 400400
- Wärmeleitkörperthermal conductors
- 402402
- Teil der konischen Hülsepart the conical sleeve
- 404404
- Elastomerelastomer
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007045258.8A DE102007045258B4 (en) | 2007-09-21 | 2007-09-21 | Internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007045258.8A DE102007045258B4 (en) | 2007-09-21 | 2007-09-21 | Internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102007045258A1 true DE102007045258A1 (en) | 2009-04-02 |
DE102007045258B4 DE102007045258B4 (en) | 2017-06-14 |
Family
ID=40384164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007045258.8A Active DE102007045258B4 (en) | 2007-09-21 | 2007-09-21 | Internal combustion engine |
Country Status (1)
Country | Link |
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DE (1) | DE102007045258B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004048395B4 (en) * | 2004-10-05 | 2015-12-10 | Continental Automotive Gmbh | Piezo injector with contact elements for heat dissipation |
US20180328326A1 (en) * | 2015-11-27 | 2018-11-15 | Robert Bosch Gmbh | Injector set-up having a thermal protection sleeve |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE873011C (en) * | 1951-04-24 | 1953-04-09 | Saurer Ag Adolph | Injection nozzle for diesel engines |
DE900030C (en) * | 1951-12-25 | 1953-12-17 | Julius Ortlieb & Cie Werkzeug | Clamping device with clamping element |
DD247490A1 (en) * | 1986-03-31 | 1987-07-08 | Eberswalde Kranbau | TIGHTENED BOLT CONNECTION |
DE19743103A1 (en) * | 1997-09-30 | 1999-04-01 | Bosch Gmbh Robert | Heat protection sleeve |
DE10234324A1 (en) * | 2001-02-07 | 2004-02-19 | Cummins Inc., Columbus | Fuel injector for internal combustion engine has nozzle with shank whose outer peripheral surface is tapered and engaged with tapered inner peripheral surface of nozzle support portion when nozzle is received in retainer |
DE102005006641A1 (en) * | 2005-02-14 | 2006-08-24 | Siemens Ag | Injection valve for injecting fuel and cylinder head |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2777431A (en) * | 1953-08-28 | 1957-01-15 | Maschf Augsburg Nuernberg Ag | Injection nozzle arrangement |
JPH10252609A (en) * | 1997-01-13 | 1998-09-22 | Yamaha Motor Co Ltd | Cylinder injection engine |
-
2007
- 2007-09-21 DE DE102007045258.8A patent/DE102007045258B4/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE873011C (en) * | 1951-04-24 | 1953-04-09 | Saurer Ag Adolph | Injection nozzle for diesel engines |
DE900030C (en) * | 1951-12-25 | 1953-12-17 | Julius Ortlieb & Cie Werkzeug | Clamping device with clamping element |
DD247490A1 (en) * | 1986-03-31 | 1987-07-08 | Eberswalde Kranbau | TIGHTENED BOLT CONNECTION |
DE19743103A1 (en) * | 1997-09-30 | 1999-04-01 | Bosch Gmbh Robert | Heat protection sleeve |
DE10234324A1 (en) * | 2001-02-07 | 2004-02-19 | Cummins Inc., Columbus | Fuel injector for internal combustion engine has nozzle with shank whose outer peripheral surface is tapered and engaged with tapered inner peripheral surface of nozzle support portion when nozzle is received in retainer |
DE102005006641A1 (en) * | 2005-02-14 | 2006-08-24 | Siemens Ag | Injection valve for injecting fuel and cylinder head |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004048395B4 (en) * | 2004-10-05 | 2015-12-10 | Continental Automotive Gmbh | Piezo injector with contact elements for heat dissipation |
US20180328326A1 (en) * | 2015-11-27 | 2018-11-15 | Robert Bosch Gmbh | Injector set-up having a thermal protection sleeve |
Also Published As
Publication number | Publication date |
---|---|
DE102007045258B4 (en) | 2017-06-14 |
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