DE102010005064A1 - Cylinder head for internal combustion engine, has fuel injector for insertion of fuel directly in cylinder of internal combustion engine, where fuel injector has valve needle that is movable in axial direction by control element - Google Patents
Cylinder head for internal combustion engine, has fuel injector for insertion of fuel directly in cylinder of internal combustion engine, where fuel injector has valve needle that is movable in axial direction by control element Download PDFInfo
- Publication number
- DE102010005064A1 DE102010005064A1 DE201010005064 DE102010005064A DE102010005064A1 DE 102010005064 A1 DE102010005064 A1 DE 102010005064A1 DE 201010005064 DE201010005064 DE 201010005064 DE 102010005064 A DE102010005064 A DE 102010005064A DE 102010005064 A1 DE102010005064 A1 DE 102010005064A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder head
- valve needle
- fuel
- fuel injector
- internal combustion
- 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.)
- Ceased
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/242—Arrangement of spark plugs or 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
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
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
Die Erfindung betrifft einen Zylinderkopf für eine Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1.The invention relates to a cylinder head for an internal combustion engine with the features of the preamble of
Sie geht von der deutschen Offenlegungsschrift
Gattungsgemäße Injektoren sind sehr kostenintensiv. Weiter führen die notwendigen Befestigungselemente zu weiteren Mehrkosten. Außerdem haben heute bekannte Kraftstoffinjektoren teilweise große Toleranzen bezüglich der Lage der Spraybohrungen relativ zur Zündkerze, was zu einem schlechten Brennkraftmaschinenlauf (Laufunruhe) führen kann.Generic injectors are very expensive. Next, the necessary fasteners lead to additional costs. In addition, today known fuel injectors have sometimes large tolerances with respect to the position of the spray holes relative to the spark plug, which can lead to a poor engine running (rough running).
Aufgabe der vorliegenden Erfindung ist es, oben genannte Nachteile zu vermeiden.Object of the present invention is to avoid the above-mentioned disadvantages.
Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is solved by the features in the characterizing part of
Die erfindungsgemäße Ausgestaltung führt zu in vorteilhafter Weise zu einer Kostenersparnis durch Wegfall von einzelnen Injektorbauelementen. Weiterhin kann eine Brennraumabdichtung zwischen Injektor und Zylinderkopf entfallen. Ferner ergibt sich durch die erfindungsgemäße Ausgestaltung eine Verbesserung der Genauigkeit der Lage der Spritzlöcher, bzw. Spraybohrungen bezüglich der Zündkerze, wodurch die Laufruhe im Falle einer fremd gezündeten Brennkraftmaschine verbessert wird. Weiter ergibt sich in vorteilhafter Weise eine Kraftstofftemperaturkontrolle durch ein Temperaturmanagement des Zylinderkopfes.The embodiment of the invention leads to an advantageous manner to a cost savings by eliminating individual Injektorbauelementen. Furthermore, a combustion chamber seal between the injector and the cylinder head can be omitted. Furthermore, the embodiment of the invention results in an improvement in the accuracy of the position of the injection holes, or spray holes with respect to the spark plug, whereby the smoothness is improved in the case of an externally ignited internal combustion engine. Next results in an advantageous manner, a fuel temperature control by a temperature management of the cylinder head.
Die Ausgestaltungen gemäß den Unteransprüchen sind besonders bevorzugte Weiterbildungen der Erfindung.The embodiments according to the subclaims are particularly preferred developments of the invention.
Die Erfindung beschreibt somit eine teilweise Integration des Kraftstoffinjektors in den Zylinderkopf. Dabei wird die Nadelgruppe mit Spritzlöchern, bzw. Spraybohrungen und ggf. ein Dichtelement zwischen dem Kraftstoffinjektor und dem Zylinderkopf in den Zylinderkopf integriert. Die übrigen Bauelemente des Kraftstoffinjektors werden in eine Montagestelle eingesetzt, besonders bevorzugt eingeschraubt. Zusätzliche Befestigungselemente für den Kraftstoffinjektor können somit entfallen. Insbesondere bietet ein solches erfindungsgemäßes Prinzip in Kombination mit der Integration anderer kraftstoffführender Bauteile, insbesondere dem Kraftstoffrail und den Kraftstoffleitungen in den Zylinderkopf große dichtungstechnische Vorteile. Durch die erfindungsgemäße Ausgestaltung kann somit der gesamte Hochdruckbereich des Kraftstoffinjektors in den Zylinderkopf integriert werden.The invention thus describes a partial integration of the fuel injector in the cylinder head. In this case, the needle group with spray holes, or spray holes and possibly a sealing element between the fuel injector and the cylinder head is integrated into the cylinder head. The remaining components of the fuel injector are inserted into a mounting location, particularly preferably screwed. Additional fasteners for the fuel injector can thus be omitted. In particular, such an inventive principle in combination with the integration of other fuel-carrying components, in particular the fuel rail and the fuel lines in the cylinder head offers great sealing advantages. As a result of the embodiment according to the invention, the entire high-pressure region of the fuel injector can thus be integrated into the cylinder head.
Als Ventilnadelführung kann eine in den Zylinderkopf eingebrachte Vertiefung, wie z. B. eine Bohrung, dienen. Ebenfalls ist denkbar, in eine im Zylinderkopf eingebrachte Vertiefung ein zusätzliches Bauteil als Ventilnadelführung einzupressen oder einzugießen, welches dann auch den Ventilsitz und ggf. auch die Spraybohrungen, diese evtl. auch mit dem Zylinderkopf gemeinsam, bildet. Der kraftstoffführende Teil des Kraftstoffinjektors wird auf der dem Brennraum abgewandten Seite dicht verschraubt. Das Kraftstoffsystem ist somit bis auf eine Schnittstelle, ggf. zu einem Drucksensor und/oder einer zu einer Kraftstoffzuleitung komplett verschlossen.As a valve needle guide introduced into the cylinder head recess, such. B. a hole serve. It is also conceivable to press or insert an additional component as a valve needle guide into a recess introduced in the cylinder head, which then also forms the valve seat and possibly also the spray bores, possibly also together with the cylinder head. The fuel-carrying part of the fuel injector is tightly screwed on the side facing away from the combustion chamber. The fuel system is thus completely closed except for an interface, possibly to a pressure sensor and / or to a fuel supply line.
Die Einstellung des Ventilnadelhubs kann durch eine definierte Einschraubtiefe des Funktionsteils (Nadelantrieb, bzw. Stellelement) des Kraftstoffinjektors erfolgen. Besonders bevorzugt wird auch die Kraftstoffversorgungsleitung, das sog. Kraftstoffrail, evtl. mit den Kraftstoffleitungen, in den Zylinderkopf integriert. Somit sind weder ein separates Kraftstoffrail noch eine separate Kraftstoffleitung noch ein separates Niederhaltesystem für den Kraftstoffinjektor nötig. Ebenfalls ist eine Brennraumabdichtung zwischen Zylinderkopf und Kraftstoffinjektor nicht zwingend notwendig.The adjustment of the valve needle stroke can be effected by a defined screw-in depth of the functional part (needle drive or actuating element) of the fuel injector. Particularly preferably, the fuel supply line, the so-called fuel rail, possibly with the fuel lines, integrated into the cylinder head. Thus, neither a separate fuel rail nor a separate fuel line nor a separate hold-down system for the fuel injector are needed. Likewise, a combustion chamber seal between the cylinder head and the fuel injector is not absolutely necessary.
Ein besonderer Vorteil des erfindungsgemäßen Prinzips ist, dass unabhängig von der Temperatur die Lage der Spritzlöcher zum Brennraum immer gleich bleibt. Ein weiterer Vorteil der Erfindung ist, dass durch die steife Anbindung des Kraftstoffinjektors an den Zylinderkopf geringere Schwingungsbelastungen auf den Kraftstoffinjektor zu erwarten sind, als bei Systemen, welche mittels o. g. separater Bauteile am Zylinderkopf oder anderen Zylinderkopfteilen montiert werden.A particular advantage of the principle according to the invention is that regardless of the temperature, the position of the injection holes to the combustion chamber always remains the same. Another advantage of the invention is that due to the rigid connection of the fuel injector to the cylinder head, lower vibration loads on the fuel injector are to be expected than in systems which by means of o. G. separate components are mounted on the cylinder head or other cylinder head parts.
Im Folgenden ist die Erfindung anhand eines Ausführungsbeispieles in einer einzigen Figur näher erläutert. In the following the invention with reference to an embodiment in a single figure is explained in more detail.
In
In einem geschlossenen Zustand des Kraftstoffinjektors
Selbstverständlich kann in weiteren Ausführungsbeispielen auch ein anderer für den Antrieb der Ventilnadel
Durch die erfindungsgemäße Ausgestaltung wird eine Kostenersparnis durch den Wegfall von separaten Injektorbauelementen erzielt. Weiter kann eine Brennraumabdichtung zwischen Kraftstoffinjektor
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Zylinderkopfcylinder head
- 22
- Kraftstoffinjektorfuel injector
- 33
- Zylindercylinder
- 44
- Stellelementactuator
- 55
- Ventilnadelvalve needle
- 66
- Ventilsitzvalve seat
- 77
- Spraybohrungspray hole
- 88th
- VentilnadelführungValve needle guide
- 99
- Dichtelementsealing element
- 1010
- Gehäusecasing
- 1111
- KraftstoffversorgungsleitungFuel supply line
- 1212
- SpuleKitchen sink
- 1313
- Elektrischer SteckerElectric plug
- 1414
- RückstellfederReturn spring
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005058317 A1 [0002] DE 102005058317 A1 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010005064 DE102010005064A1 (en) | 2010-01-20 | 2010-01-20 | Cylinder head for internal combustion engine, has fuel injector for insertion of fuel directly in cylinder of internal combustion engine, where fuel injector has valve needle that is movable in axial direction by control element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010005064 DE102010005064A1 (en) | 2010-01-20 | 2010-01-20 | Cylinder head for internal combustion engine, has fuel injector for insertion of fuel directly in cylinder of internal combustion engine, where fuel injector has valve needle that is movable in axial direction by control element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010005064A1 true DE102010005064A1 (en) | 2011-07-21 |
Family
ID=44313978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE201010005064 Ceased DE102010005064A1 (en) | 2010-01-20 | 2010-01-20 | Cylinder head for internal combustion engine, has fuel injector for insertion of fuel directly in cylinder of internal combustion engine, where fuel injector has valve needle that is movable in axial direction by control element |
Country Status (1)
Country | Link |
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DE (1) | DE102010005064A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528263A (en) * | 1946-04-29 | 1950-10-31 | Chapman Charles Wallace | Internal-combustion engine of the compression ignition type |
DE3903493A1 (en) * | 1988-02-12 | 1989-08-24 | Outboard Marine Corp | INTERNAL COMBUSTION ENGINE |
JPH09228926A (en) * | 1996-02-22 | 1997-09-02 | Zexel Corp | Solenoid fuel injection valve and its mounting structure |
JP2003193934A (en) * | 2001-12-25 | 2003-07-09 | Toyota Motor Corp | Fuel feeder of internal combustion engine |
WO2005052359A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Fuel injection system |
DE102005058317A1 (en) | 2005-12-07 | 2007-06-21 | Daimlerchrysler Ag | Injector for a motor vehicle's internal combustion engine uses an injector valve to inject fuel into an internal combustion engine's combustion chamber |
DE102006051326A1 (en) * | 2006-10-31 | 2008-05-08 | Robert Bosch Gmbh | Valve with a sealing area made of metallic glass |
-
2010
- 2010-01-20 DE DE201010005064 patent/DE102010005064A1/en not_active Ceased
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2528263A (en) * | 1946-04-29 | 1950-10-31 | Chapman Charles Wallace | Internal-combustion engine of the compression ignition type |
DE3903493A1 (en) * | 1988-02-12 | 1989-08-24 | Outboard Marine Corp | INTERNAL COMBUSTION ENGINE |
JPH09228926A (en) * | 1996-02-22 | 1997-09-02 | Zexel Corp | Solenoid fuel injection valve and its mounting structure |
JP2003193934A (en) * | 2001-12-25 | 2003-07-09 | Toyota Motor Corp | Fuel feeder of internal combustion engine |
WO2005052359A1 (en) * | 2003-11-28 | 2005-06-09 | Robert Bosch Gmbh | Fuel injection system |
DE102005058317A1 (en) | 2005-12-07 | 2007-06-21 | Daimlerchrysler Ag | Injector for a motor vehicle's internal combustion engine uses an injector valve to inject fuel into an internal combustion engine's combustion chamber |
DE102006051326A1 (en) * | 2006-10-31 | 2008-05-08 | Robert Bosch Gmbh | Valve with a sealing area made of metallic glass |
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R012 | Request for examination validly filed | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |