DE102011082668A1 - Fuel injection device for internal combustion engine, determines amount of fuel sprayed by fuel injector into the valve which is integrated with high-pressure accumulator - Google Patents
Fuel injection device for internal combustion engine, determines amount of fuel sprayed by fuel injector into the valve which is integrated with high-pressure accumulator Download PDFInfo
- Publication number
- DE102011082668A1 DE102011082668A1 DE201110082668 DE102011082668A DE102011082668A1 DE 102011082668 A1 DE102011082668 A1 DE 102011082668A1 DE 201110082668 DE201110082668 DE 201110082668 DE 102011082668 A DE102011082668 A DE 102011082668A DE 102011082668 A1 DE102011082668 A1 DE 102011082668A1
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- Germany
- Prior art keywords
- fuel
- pressure
- valve
- injection device
- fuel injection
- 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.)
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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
- 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
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
- F02M63/0007—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using electrically actuated valves
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way valves
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- 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 eine Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine, aufweisend eine Hochdruckpumpe, einen Kraftstoffhochdruckspeicher und einen Kraftstoffinjektor, die hydraulisch verschaltet sind und wobei ein die von dem Kraftstoffinjektor verspritzte Kraftstoffmenge bestimmendes Ventil vorgesehen ist. Weiterhin betrifft die Erfindung eine Brennkraftmaschine mit einer Kraftstoffeinspritzvorrichtung.The invention relates to a fuel injection device for an internal combustion engine, comprising a high-pressure pump, a high-pressure fuel accumulator and a fuel injector, which are hydraulically interconnected and wherein one of the fuel injector spurting fuel quantity determining valve is provided. Furthermore, the invention relates to an internal combustion engine with a fuel injection device.
Stand der TechnikState of the art
Eine derartige Kraftstoffeinspritzvorrichtung ist aus der
Eine weitere Kraftstoffeinspritzvorrichtung ist aus der
Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoffeinspritzvorrichtung mit einem Hochdruckspeicher bereit zu stellen, deren Aufbau gegenüber einem Common-Rail-Einspritzsystem vereinfacht ist.The invention has for its object to provide a fuel injection device with a high pressure accumulator, the structure of which is simplified compared to a common rail injection system.
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Diese Aufgabe wird dadurch gelöst, dass das Ventil in den Kraftstoffhochdruckspeicher integriert ist. Gegenüber der zum Stand der Technik bekannten Kraftstoffeinspritzvorrichtung ist das Ventil nicht als eigenständiges Bauteil in der Hochdruckleitung zwischen dem Kraftstoffhochdruckspeicher und dem Kraftstoffinjektor angeordnet oder aber in den Kraftstoffinjektor integriert, sondern in den Kraftstoffhochdruckspeicher einbezogen. Dadurch kann der Kraftstoffinjektor, der zum Anbau an unterschiedliche Brennkraftmaschinen ein jeweils angepasstes Design aufweisen muss, kostengünstig produziert werden, da der aufwendige Ventilbereich entfällt. Der Kraftstoffinjektor ist somit auf das Vorhandensein der für die Einspritzfunktion notwendigen Bauteile beschränkt. Gegenüber einem in die Hochdruckleitung eingebauten Ventil bietet die erfindungsgemäße Ausgestaltung den Vorteil, dass der Anbau des Ventils an den Kraftstoffhochdruckspeicher schon allein dadurch verbessert wird, dass weniger Leitungsteile und Verschraubungen benötigt werden, die kostenintensiv sind und eine Beeinträchtigung der hydraulischen Steifheit des Kraftstoffeinspritzsystems darstellen.This object is achieved in that the valve is integrated in the high-pressure fuel storage. Compared to the fuel injection device known from the prior art, the valve is not arranged as an independent component in the high pressure line between the high-pressure fuel storage and the fuel injector or integrated into the fuel injector, but included in the high-pressure fuel storage. As a result, the fuel injector, which must have a respectively adapted design for attachment to different internal combustion engines, can be produced cost-effectively, since the complex valve region is eliminated. The fuel injector is thus limited to the presence of the necessary components for the injection function. Compared with a built-in valve in the high pressure line, the embodiment of the invention has the advantage that the attachment of the valve to the high-pressure fuel storage is already improved solely by the fact that fewer line parts and fittings are needed, which are costly and represent an impairment of the hydraulic stiffness of the fuel injection system.
In Weiterbildung der Erfindung weist das Ventil einen Magnetaktor oder einen magnetostriktiven Aktor oder einen Piezo-Aktor auf und in weiterer Ausgestaltung ist das Ventil ein Servoventil. Ein solches Ventil kann zudem kraftreduziert ausgebildet sein und beispielsweise eine Dauerleckage aufweisen, um die auf das Ventil einwirkende Kraft durch den zu steuernden Kraftstoff zu reduzieren. Damit wird die Dynamik des Ventils erhöht. Das Ventil ist beispielsweise mit dem Magnetaktor so aufgebaut, dass bei bestromtem Magnetaktor das Ventil auf Durchgang geschaltet ist. In diesem Betriebszustand strömt aus dem Kraftstoffhochdruckspeicher durch das Ventil und die Hochdruckleitung Kraftstoff in den Kraftstoffinjektor. Durch diesen in den Kraftstoffinjektor einströmenden Kraftstoff wird eine Düsennadel des Kraftstoffinjektors gegen die Kraft einer Düsennadelfeder axial verschoben und es werden Einspritzöffnungen in dem Kraftstoffinjektor zur Einspritzung von Kraftstoff in einen zugeordneten Brennraum einer Brennkraftmaschine freigegeben. Wird die Bestromung des Magnetaktors aufgehoben, baut sich der Druck in der Hochdruckleitung beispielsweise über einen Rücklauf oder eine Leckageleitung ab und die Düsennadel schließt und beendet damit die Einspritzung. Bei dem Kraftstoffinjektor braucht bei dieser Ausgestaltung lediglich der Düsennadelkörper und die Düsennadel aus hochdruckfestem Werkstoff gefertigt sein, während der die Düsennadelfeder aufnehmende Bereich des Kraftstoffinjektors wegen der hier herrschenden geringeren Kräfte aus einem kostengünstigeren Werkstoff gefertigt sein kann.In a further development of the invention, the valve has a magnetic actuator or a magnetostrictive actuator or a piezoactuator, and in a further embodiment, the valve is a servo valve. Such a valve may also be designed to be reduced in force and, for example, have a permanent leakage in order to reduce the force acting on the valve by the fuel to be controlled. This increases the dynamics of the valve. The valve is constructed, for example, with the solenoid actuator so that when the solenoid actuator is energized, the valve is switched to passage. In this operating state, fuel flows from the high-pressure fuel accumulator through the valve and the high-pressure line into the fuel injector. As a result of this fuel flowing into the fuel injector, a nozzle needle of the fuel injector is axially displaced against the force of a nozzle needle spring, and injection openings in the fuel injector for the injection of fuel into an associated combustion chamber of an internal combustion engine are released. If the current supply of the magnetic actuator is removed, the pressure in the high-pressure line, for example, builds up via a return line or a leakage line and the nozzle needle closes and thus ends the injection. In the case of the fuel injector, in this embodiment only the nozzle needle body and the nozzle needle need to be made of high-pressure-resistant material, while the nozzle needle spring receiving area of the fuel injector may be made of a less expensive material because of the lower forces prevailing here.
In Weiterbildung der Erfindung bildet das Gehäuse des Hochdruckspeichers gleichzeitig (mit einem Teilbereich) einen Ventilkörper des Ventils. Diese Ausgestaltung ist besonders vorteilhaft, da das Gehäuse des Kraftstoffhochdruckspeichers schon aufgrund seiner Funktion her aus einem hochdruckfesten Werkstoff gefertigt wird und daher die Funktion eines Ventilkörpers für das Ventil durch eine entsprechende konstruktive Ausgestaltung einfach durch beispielsweise eine zusätzliche Bearbeitung aufnehmen kann.In a development of the invention, the housing of the high-pressure accumulator simultaneously forms (with a partial region) a valve body of the valve. This embodiment is particularly advantageous since the housing of the high-pressure fuel accumulator already out of a due to its function high pressure resistant material is made and therefore can easily accommodate the function of a valve body for the valve by a corresponding structural design, for example, an additional processing.
In Weiterbildung der Erfindung ist ein Druckregelventil in den Kraftstoffhochdruckspeicher integriert, das einen Eingang in den Innenraum des Kraftstoffhochdruckspeichers und einen Ausgang in ein Niederdrucksystem aufweist und wobei das Druckregelventil baugleich zu dem Ventil ausgebildet ist. Auch diese Ausgestaltung ist besonders günstig, da somit ohne zusätzlichen Aufwand mit gleichen Teilen auch die Funktion eines Druckregelventils, das zum Regeln des in dem Kraftstoffhochdruckspeicher herrschenden Kraftstoffdrucks eingesetzt wird, bereitgestellt ist. Das Druckregelventil steuert von der Hochdruckpumpe geförderten Kraftstoff bei Erreichen eines vorgegebenen Drucks in dem Kraftstoffhochdruckspeicher in ein Niederdrucksystem ab. Im Grunde ist bei dieser Ausgestaltung der Ausgang des Druckregelventils im Unterschied zu dem Ventil mit dem Niederdrucksystem verschaltet. In a further development of the invention, a pressure regulating valve is integrated into the high-pressure fuel accumulator, which has an input into the interior of the high-pressure fuel accumulator and an outlet in a low-pressure system and wherein the pressure regulating valve is constructed identical to the valve. This embodiment is also particularly favorable, since the function of a pressure regulating valve, which is used for regulating the fuel pressure prevailing in the high-pressure fuel accumulator, is thus provided without additional expenditure with equal parts. The pressure control valve controls fuel delivered by the high-pressure pump when a predetermined pressure in the high-pressure fuel accumulator is reached in a low-pressure system. Basically, in this embodiment, the output of the pressure control valve is connected in contrast to the valve with the low pressure system.
In Weiterbildung der Erfindung ist der Kraftstoffhochdruckspeicher seitlich an einen Zylinderkopf einer Brennkraftmaschine anbaubar. Diese Ausgestaltung ermöglicht es, dass in weiterer Ausgestaltung das Gehäuse des Kraftstoffhochdruckspeichers einen seitlichen Hochdruckausgang für das Ventil aufweist, der wiederum in weiterer Ausgestaltung in einen Anschlusskanal des Zylinderkopfes hineinragt und direkt oder indirekt mit einem Hochdruckeingang des Kraftstoffinjektors zusammenwirkt. Diese konstruktive Ausgestaltung ermöglicht einen sehr kompakten Aufbau der an dem Zylinderkopf der Brennkraftmaschine verbauten Teile der Kraftstoffeinspritzvorrichtung.In a further development of the invention, the high-pressure fuel accumulator is laterally attachable to a cylinder head of an internal combustion engine. This refinement makes it possible, in a further refinement, for the housing of the high-pressure fuel accumulator to have a high-pressure side outlet for the valve, which in turn projects into a connecting channel of the cylinder head in a further embodiment and interacts directly or indirectly with a high-pressure inlet of the fuel injector. This structural configuration allows a very compact design of the parts of the fuel injection device installed on the cylinder head of the internal combustion engine.
Dabei weist in Weiterbildung der Erfindung der Zylinderkopf einen zumindest angenähert quer zu dem Anschlusskanal ausgerichteten Schacht zur Aufnahme des Kraftstoffinjektors auf. Dadurch kann der Kraftstoffhochdruckspeicher mit dem integrierten Ventil ohne zusätzliche Hochdruckleitung mit dem Kraftstoffinjektor verbunden sein. Diese Ausgestaltung spart Bauteile und zusätzlich ist die Anzahl der Dichtstellen minimiert. In this case, in a further development of the invention, the cylinder head has a shaft aligned at least approximately transversely to the connection channel for receiving the fuel injector. As a result, the high-pressure fuel accumulator with the integrated valve can be connected to the fuel injector without additional high-pressure line. This design saves components and in addition the number of sealing points is minimized.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in den Figuren dargestelltes Ausführungsbeispiel der Erfindung näher beschrieben ist.Further advantageous embodiments of the invention are described in the drawings, in which an illustrated in the figures embodiment of the invention is described in detail.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Es zeigen:Show it:
Ausführungsform der ErfindungEmbodiment of the invention
In
Wenn das Ventil
Der konstruktive Anbau der entsprechenden Komponenten der Kraftstoffeinspritzvorrichtung ist in
Zwischen der Abdeckung
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 102004058184 A1 [0002] DE 102004058184 A1 [0002]
- DE 3910793 A1 [0003] DE 3910793 A1 [0003]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110082668 DE102011082668A1 (en) | 2011-09-14 | 2011-09-14 | Fuel injection device for internal combustion engine, determines amount of fuel sprayed by fuel injector into the valve which is integrated with high-pressure accumulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110082668 DE102011082668A1 (en) | 2011-09-14 | 2011-09-14 | Fuel injection device for internal combustion engine, determines amount of fuel sprayed by fuel injector into the valve which is integrated with high-pressure accumulator |
Publications (1)
Publication Number | Publication Date |
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DE102011082668A1 true DE102011082668A1 (en) | 2013-03-14 |
Family
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Application Number | Title | Priority Date | Filing Date |
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DE201110082668 Withdrawn DE102011082668A1 (en) | 2011-09-14 | 2011-09-14 | Fuel injection device for internal combustion engine, determines amount of fuel sprayed by fuel injector into the valve which is integrated with high-pressure accumulator |
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DE (1) | DE102011082668A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022268567A1 (en) * | 2021-06-21 | 2022-12-29 | Robert Bosch Gmbh | Gas storage device, gas supply system and gas engine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3910793A1 (en) | 1989-04-04 | 1990-10-11 | Kloeckner Humboldt Deutz Ag | FUEL INJECTION DEVICE |
DE102004058184A1 (en) | 2004-12-02 | 2006-06-08 | Robert Bosch Gmbh | Valve for controlling injection of fuel in fuel injection system has step bore with three different sections of varying diameter and in between two adjacent sections there is valve seat on which pilot piston rests |
-
2011
- 2011-09-14 DE DE201110082668 patent/DE102011082668A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3910793A1 (en) | 1989-04-04 | 1990-10-11 | Kloeckner Humboldt Deutz Ag | FUEL INJECTION DEVICE |
DE102004058184A1 (en) | 2004-12-02 | 2006-06-08 | Robert Bosch Gmbh | Valve for controlling injection of fuel in fuel injection system has step bore with three different sections of varying diameter and in between two adjacent sections there is valve seat on which pilot piston rests |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022268567A1 (en) * | 2021-06-21 | 2022-12-29 | Robert Bosch Gmbh | Gas storage device, gas supply system and gas engine |
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