EP2649297B1 - Fuel distributor for gasoline and natural gas - Google Patents
Fuel distributor for gasoline and natural gas Download PDFInfo
- Publication number
- EP2649297B1 EP2649297B1 EP11778599.8A EP11778599A EP2649297B1 EP 2649297 B1 EP2649297 B1 EP 2649297B1 EP 11778599 A EP11778599 A EP 11778599A EP 2649297 B1 EP2649297 B1 EP 2649297B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- distributor
- fuel
- fuel distributor
- space
- housing
- 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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Links
- 239000000446 fuel Substances 0.000 title claims description 100
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 48
- 239000003345 natural gas Substances 0.000 title claims description 24
- 239000003502 gasoline Substances 0.000 title description 14
- 238000002347 injection Methods 0.000 claims description 20
- 239000007924 injection Substances 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 5
- 238000005192 partition Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Images
Classifications
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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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
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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
- 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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0275—Arrangement of common rails
- F02M63/0285—Arrangement of common rails having more than one common rail
- F02M63/029—Arrangement of common rails having more than one common rail per cylinder bank, e.g. storing different fuels or fuels at different pressure levels per cylinder bank
Definitions
- the invention relates to a fuel feeder, in particular a combined fuel distributor strip for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
- a mixture-compression, spark-ignition internal combustion engine may be suitable for operation with gasoline and natural gas.
- different fuel injection systems with separate injection valves are required for the supply of gas and the supply of natural gas.
- the injection valves for the fuel injection can be connected to each other via a fuel rail. Accordingly, the injection valves for natural gas injection via a further fuel rail can be interconnected.
- an exclusive operation with gasoline the number of components thus increases considerably and the assembly times are correspondingly increased.
- an additional space is required to accommodate all these components specifically to the internal combustion engine.
- a fuel feeder in the form of a combined fuel rail for fuel injection systems of mixture-compression, spark-ignition internal combustion engines is already known, wherein a first fuel distributor, which serves for distributing natural gas to a plurality of terminals of the first fuel distributor, and a second fuel distributor, which is used to distribute gasoline to a plurality of terminals serves second fuel distributor, are provided.
- the first fuel distributor and the second fuel distributor are integrated in a common housing.
- the inflow paths to the respective connection points are formed as bores with circular cross sections, so that a separation between the inflow paths automatically results through the material of the housing therebetween.
- the fuel meter according to the invention with the features of claim 1 has the advantage that the design of a fuel injection system is improved. Specifically, the number of required components can be reduced and thus the required assembly time can be shortened. In addition, it is possible to reduce the required installation space, in particular on the internal combustion engine.
- the fuel feeder can distribute natural gas via the first fuel distributor to a plurality of injection valves, which can be connected to the connection points of the first fuel distributor. In this case, at least two connection points are provided for the injection valves. Another connection point is used for an inlet, which is connected in the assembled state with a gas storage.
- the natural gas is stored here preferably as compressed natural gas in a gas storage, for example at pressures of about 20 MPa (200 bar). Such a compressed natural gas is also called CNG.
- CNG compressed natural gas
- the concept of natural gas is not limited to natural gas but is generally understood.
- the natural gas can also be obtained artificially by coal gasification.
- gasoline is to be understood generally and not limited to pure mineral oil products. Specifically, the gasoline may also have a certain proportion of alcohols, especially ethanol.
- the term natural gas also means natural gas-like fuels and the term gasoline also gasoline-like fuels.
- a partition wall arranged in the interior of the housing which divides the interior of the housing into a first distributor space for the first fuel distributor piece and a second distributor space for the second fuel distributor piece.
- the first distributor space can also have the function of a memory.
- the second distributor space can also have the function of a memory.
- any resulting pressure pulsations can be damped.
- such memory can serve as an accumulator to improve the combustion behavior of the internal combustion engine in each operation. Due to the common housing a compact design of the fuel meter is possible. As a result of the partition wall arranged in the interior of the housing, it is possible with regard to the volumes of the two distributor spaces to realize a particularly compact embodiment of the fuel dispenser.
- a separating element is arranged in the interior of the housing, which comprises the partition, that the separating element at least partially abuts against an inner wall of the housing at the first distributor space and that the separating element at the second distributor space at least in sections on the inner wall of the Housing rests.
- the separating element has a Z-shaped profile.
- the separating element can in this case be designed as an internal sword which separates the first distributor space from the second distributor space and ensures a seal between the two distributor spaces.
- the separating element has a high rigidity. This can improve the dynamic behavior.
- first distributor space is configured at least approximately as a cuboid first distributor space. It is also advantageous that the second distributor space is configured at least approximately as a cuboid second distributor space. Moreover, it is advantageous that the first distributor space and the second distributor space are formed next to one another in the interior of the housing. It is also advantageous that the first distributor space and the second distributor space are at least approximately the same size. It is also advantageous here that the first distributor space and the second distributor space extend side by side and parallel to one another through the interior of the housing. Such embodiments of the two distribution spaces allow a compact design of the common housing and a favorable arrangement of the respective connection points to the fuel distributor pieces. As a result, the entire fuel feeder can be designed to save space.
- the interior of the housing is configured at least approximately cuboid. By a partition, this can be done a division into the two cuboid distribution spaces. It is also possible that the first fuel distributor and the second fuel distributor are arranged side by side and parallel to each other.
- the first Brennstoffverteiler Swiss is at least partially formed of a metallic material and that the second Brennstoffverteiler Swiss is at least partially formed of a plastic-based material, wherein the common housing partially formed of the metallic material and partially of the plastic-based material is.
- a combination of a steel rail for natural gas application and a plastic rail for gasoline application is possible. In this way, a reliable distribution and optionally storage of both the natural gas and the gasoline and at the same time a cost and weight-optimized design of the fuel meter can be achieved.
- connection points of the first Brennstoffverteiler Swisss and the connection points of the second fuel distributor are designed in an advantageous manner to the common housing.
- a reduction of cultivation sites on a suction pipe or a cylinder of the internal combustion engine is possible because the two injectors for the respective cylinder can be connected close to each other.
- Fig. 1 shows a fuel feeder 1 in an excerpt, schematic, spatial representation according to an embodiment of the invention.
- the fuel feeder 1 can serve, in particular, as a combined fuel distributor strip for fuel injection systems of mixture-compression, spark-ignited internal combustion engines.
- the fuel feeder 1 has a first fuel distributor 2 and a second fuel distributor 3.
- the first fuel distributor 2 is used for distributing natural gas to a plurality of connection points 4, of which in the Fig. 1 the connection point 4 is shown.
- the first fuel distributor 2 has a connection point 5, which is designed as a feed for natural gas.
- natural gas here preferably compressed natural gas (CNG) is used.
- the second fuel distributor 3 is used to distribute gasoline to a plurality of connection points 6, 7, 8 of the second fuel distributor 3.
- the second fuel distributor 3 has a connection point 9, which is designed as a feed 9 for gasoline.
- the two fuel distributor pieces 2, 3 are integrated in a common housing 10.
- the housing 10 has a first side 11 and a second side 12.
- the first side 11 may be configured from a first part 11, while the second side 12 is configured from a second part 12.
- the parts 11, 12 can then also be formed of different materials.
- the first part 11 may be formed of a metallic material, in particular a steel.
- the second part 12 may be formed of a plastic based material.
- a one-piece design is possible in which the housing 10 and thus both sides 11, 12 are formed of a single material, in particular a steel.
- a partition wall 16 is arranged, which divides the interior 15 of the housing 10 into a first distributor space 17 for the first fuel distributor 2 and a second distributor space 18 for the second fuel distributor 3.
- the first distributor space 17 can also be the Function of a memory, in particular pressure and volume memory, have.
- the second distributor chamber 18 can also have the function of a store, in particular a pressure and volume store.
- In the first distribution chamber 17 is in operation by high pressure compressed natural gas, which is stored, for example, in a suitable memory with a pressure of about 20 MPa (200 bar) and is fed via the inlet 5 in the first distribution chamber 17.
- the dividing wall 16 separates the compressed natural gas in the first fuel distributor 2 from the otherwise provided gasoline in the second fuel distributor 3.
- a partition member 19 is provided with a Z-shaped profile.
- the housing 10 is shown together with the separating element 19 in an open sectional view, so that the Z-shaped profile is shown in section.
- the separating element 19 has three sections 16, 20, 21 as a result of this embodiment.
- the section 20 is located on the side 11 of the first fuel distributor 2.
- the section 21 is located on the side 12 of the second fuel distributor 3.
- the two sections 20, 21 are interconnected by the partition 16.
- a right angle between the sections 16, 20 and between the sections 16, 21 is predetermined in this embodiment in the profile.
- the sections 20, 21 are oriented parallel to one another.
- the section 20 of the separating element 19 bears against a section 22 of an inner wall 23 of the housing 10.
- the section 21 bears against a section 24 of the inner wall 23.
- the separating element 19 is designed here with a high rigidity.
- the separating element 19 serves as an internal sword, which, by virtue of its rigidity, permits not only a separation of the two distribution spaces 17, 18 but also an advantageous dynamic behavior.
- the interior 15 of the housing 10 is designed cuboid in this embodiment.
- the two distribution spaces 17, 18 are of equal size.
- the two distribution spaces 17, 18 are adjacent to each other and these also extend parallel to each other through the housing 10 of the fuel meter 1.
- the first fuel distributor 2 and the second fuel distributor 3 are arranged side by side and parallel to each other.
- an injector 25 for injecting natural gas and an injector 26 for injecting gasoline are connected to the fuel feeder 1.
- securing clips 27, 28 are provided, by means of which the injection valves 25, 26 are mounted on the respective connection point 4, 6.
- the connection points 4, 6 can in this case be designed as valve cups 4, 6.
- a suitable injection valve can also be attached to the connection points 7, 8 or to the further connection points, not shown, adjacent to the connection points 7, 8, of the first fuel distributor 2. It should be noted, however, that the fuel distributor 1 can be manufactured independently of such injection valves and can also be distributed without injectors.
- the fuel feeder 1 also has holders 29, 30.
- the brackets 29, 30 may serve as mounting brackets 29, 30 for mounting the entire fuel feeder 1 to an intake manifold, a cylinder head, or the like of the internal combustion engine .
- the injection valves 25, 26 may in this case be assigned to a combustion chamber of a cylinder of the internal combustion engine.
- the fuel feeder 1 has a sensor 31 which measures the pressure and the temperature in the first distributor chamber 17 of the first fuel distributor 2 as well as the pressure and the temperature in the second distributor chamber 18 of the second fuel distributor 3.
- a single electrical connection point 32 an electrical connection with a control device or the like is possible in order to transmit the measurement signals or measurement data.
- the number of required signal or data transmission cables is optimized compared to a design with two separate fuel distributor pieces.
- the fuel feeder 1 of the embodiment of the invention can be configured in a compact manner. This reduces the required space in the vehicle. In addition, eliminates a separate fuel distributor main pipe with associated holders and end caps. Furthermore, the number of assembly items is reduced, which also has a favorable effect on the assembly time. The number of attachments on the intake manifold or cylinder can also be reduced. In addition, the fuel meter 1 can be adapted with little design effort to different cylinder spacings or to different numbers of cylinders of the internal combustion engine.
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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)
Description
Die Erfindung betrifft einen Brennstoffzuteiler, insbesondere eine kombinierte Brennstoffverteilerleiste für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen.The invention relates to a fuel feeder, in particular a combined fuel distributor strip for fuel injection systems of mixture-compressing, spark-ignited internal combustion engines.
Eine gemischverdichtende, fremdgezündete Brennkraftmaschine kann für den Betrieb mit Benzin und Erdgas geeignet sein. Hierbei sind allerdings für die Benzinzufuhr und die Erdgaszufuhr unterschiedliche Brennstoffeinspritzanlagen mit getrennten Einspritzventilen erforderlich. Die Einspritzventile für die Benzineinspritzung können über eine Brennstoffverteilerleiste miteinander verbunden sein. Entsprechend können auch die Einspritzventile für die Erdgaseinspritzung über eine weitere Brennstoffverteilerleiste miteinander verbunden sein. In Bezug auf einen ausschließlichen Betrieb mit Benzin vergrößert sich somit die Anzahl der Komponenten erheblich und die Montagezeiten werden entsprechend vergrößert. Außerdem wird ein zusätzlicher Bauraum benötigt, um all diese Komponenten speziell an der Brennkraftmaschine unterzubringen.A mixture-compression, spark-ignition internal combustion engine may be suitable for operation with gasoline and natural gas. Here, however, different fuel injection systems with separate injection valves are required for the supply of gas and the supply of natural gas. The injection valves for the fuel injection can be connected to each other via a fuel rail. Accordingly, the injection valves for natural gas injection via a further fuel rail can be interconnected. With regard to an exclusive operation with gasoline, the number of components thus increases considerably and the assembly times are correspondingly increased. In addition, an additional space is required to accommodate all these components specifically to the internal combustion engine.
Aus der
Aus der
Der erfindungsgemäße Brennstoffzuteiler mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass die Ausgestaltung einer Brennstoffeinspritzanlage verbessert wird. Speziell kann die Anzahl der benötigten Komponenten verringert und somit die erforderliche Montagezeit verkürzt werden. Außerdem ist es möglich, den erforderlichen Bauraum, insbesondere an der Brennkraftmaschine, zu verringern.The fuel meter according to the invention with the features of
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Anspruch 1 angegebenen Brennstoffzuteilers möglich.The measures listed in the dependent claims advantageous developments of the fuel meter specified in
Der Brennstoffzuteiler kann über das erste Brennstoffverteilerstück Erdgas an mehrere Einspritzventile verteilen, die an den Anschlussstellen des ersten Brennstoffverteilerstücks anschließbar sind. Hierbei sind zumindest zwei Anschlussstellen für die Einspritzventile vorgesehen. Eine weitere Anschlussstelle dient für einen Zulauf, der im montierten Zustand mit einem Gasspeicher verbunden ist. Das Erdgas ist hierbei vorzugsweise als komprimiertes Erdgas in einem Gasspeicher gespeichert, beispielsweise bei Drücken von etwa 20 MPa (200 bar). Solch ein komprimiertes Erdgas wird auch als CNG bezeichnet. Der Begriff des Erdgases ist allerdings nicht auf natürliches Erdgas beschränkt, sondern allgemein zu verstehen. Beispielsweise kann das Erdgas auch künstlich durch Kohlevergasung gewonnen werden. Außerdem ist auch der Begriff des Benzins allgemein zu verstehen und nicht auf reine Mineralölprodukte beschränkt. Speziell kann das Benzin auch einen gewissen Anteil an Alkoholen, insbesondere Ethanol, aufweisen. Somit sind unter dem Begriff Erdgas auch erdgasähnliche Brennstoffe und unter dem Begriff Benzin auch benzinähnliche Brennstoffe zu verstehen.The fuel feeder can distribute natural gas via the first fuel distributor to a plurality of injection valves, which can be connected to the connection points of the first fuel distributor. In this case, at least two connection points are provided for the injection valves. Another connection point is used for an inlet, which is connected in the assembled state with a gas storage. The natural gas is stored here preferably as compressed natural gas in a gas storage, for example at pressures of about 20 MPa (200 bar). Such a compressed natural gas is also called CNG. The concept of natural gas, however, is not limited to natural gas but is generally understood. For example, the natural gas can also be obtained artificially by coal gasification. In addition, the term of gasoline is to be understood generally and not limited to pure mineral oil products. Specifically, the gasoline may also have a certain proportion of alcohols, especially ethanol. Thus, the term natural gas also means natural gas-like fuels and the term gasoline also gasoline-like fuels.
Erfindungsgemäß ist es, dass eine im Inneren des Gehäuses angeordnete Trennwand vorgesehen ist, die das Innere des Gehäuses in einen ersten Verteilerraum für das erste Brennstoffverteilerstück und einen zweiten Verteilerraum für das zweite Brennstoffverteilerstück aufteilt. Der erste Verteilerraum kann hierbei auch die Funktion eines Speichers aufweisen. Ferner kann auch der zweite Verteilerraum die Funktion eines Speichers aufweisen. Durch solche Speicher können gegebenenfalls entstehende Druckpulsationen gedämpft werden. Außerdem können solche Speicher als Druckspeicher dienen, um das Verbrennungsverhalten der Brennkraftmaschine im jeweiligen Betrieb zu verbessern. Durch das gemeinsame Gehäuse ist eine kompakte Ausgestaltung des Brennstoffzuteilers möglich. Durch die im Inneren des Gehäuses angeordnete Trennwand ergibt sich hierbei in Bezug auf die Volumina der beiden Verteilerräume die Möglichkeit, eine besonders kompakte Ausgestaltung des Brennstoffzuteilers zu realisieren.According to the invention, a partition wall arranged in the interior of the housing is provided, which divides the interior of the housing into a first distributor space for the first fuel distributor piece and a second distributor space for the second fuel distributor piece. In this case, the first distributor space can also have the function of a memory. Furthermore, the second distributor space can also have the function of a memory. Through such storage, any resulting pressure pulsations can be damped. In addition, such memory can serve as an accumulator to improve the combustion behavior of the internal combustion engine in each operation. Due to the common housing a compact design of the fuel meter is possible. As a result of the partition wall arranged in the interior of the housing, it is possible with regard to the volumes of the two distributor spaces to realize a particularly compact embodiment of the fuel dispenser.
Erfindungsgemäß ist es hierbei auch, dass im Inneren des Gehäuses ein Trennelement angeordnet ist, das die Trennwand umfasst, dass das Trennelement an dem ersten Verteilerraum zumindest abschnittsweise an einer Innenwand des Gehäuses anliegt und dass das Trennelement an dem zweiten Verteilerraum zumindest abschnittsweise an der Innenwand des Gehäuses anliegt. Hierbei ist es vorteilhaft, dass das Trennelement ein Z-förmiges Profil aufweist. Das Trennelement kann hierbei als innenliegendes Schwert ausgestaltet sein, das den ersten Verteilerraum von dem zweiten Verteilerraum trennt und eine Abdichtung zwischen den beiden Verteilerräumen gewährleistet. Hierbei ist es ferner vorteilhaft, dass das Trennelement eine hohe Steifigkeit hat. Hierdurch kann das dynamische Verhalten verbessert werden.In this case, it is also according to the invention that a separating element is arranged in the interior of the housing, which comprises the partition, that the separating element at least partially abuts against an inner wall of the housing at the first distributor space and that the separating element at the second distributor space at least in sections on the inner wall of the Housing rests. It is advantageous that the separating element has a Z-shaped profile. The separating element can in this case be designed as an internal sword which separates the first distributor space from the second distributor space and ensures a seal between the two distributor spaces. Here, it is also advantageous that the separating element has a high rigidity. This can improve the dynamic behavior.
Vorteilhaft ist es außerdem, dass der erste Verteilerraum zumindest näherungsweise als quaderförmiger erster Verteilerraum ausgestaltet ist. Vorteilhaft ist es auch, dass der zweite Verteilerraum zumindest näherungsweise als quaderförmiger zweiter Verteilerraum ausgestaltet ist. Außerdem ist es vorteilhaft, dass der erste Verteilerraum und der zweite Verteilerraum nebeneinander im Inneren des Gehäuses ausgebildet sind. Vorteilhaft ist es ferner, dass der erste Verteilerraum und der zweite Verteilerraum zumindest näherungsweise gleich groß ausgestaltet sind. Vorteilhaft ist es hierbei auch, dass sich der erste Verteilerraum und der zweite Verteilerraum nebeneinander und parallel zueinander durch das Innere des Gehäuses erstrecken. Solche Ausgestaltungen der beiden Verteilerräume ermöglichen eine kompakte Ausgestaltung des gemeinsamen Gehäuses und eine günstige Anordnung der jeweiligen Anschlussstellen an die Brennstoffverteilerstücke. Hierdurch kann der gesamte Brennstoffzuteiler platzsparend ausgestaltet werden.It is also advantageous that the first distributor space is configured at least approximately as a cuboid first distributor space. It is also advantageous that the second distributor space is configured at least approximately as a cuboid second distributor space. Moreover, it is advantageous that the first distributor space and the second distributor space are formed next to one another in the interior of the housing. It is also advantageous that the first distributor space and the second distributor space are at least approximately the same size. It is also advantageous here that the first distributor space and the second distributor space extend side by side and parallel to one another through the interior of the housing. Such embodiments of the two distribution spaces allow a compact design of the common housing and a favorable arrangement of the respective connection points to the fuel distributor pieces. As a result, the entire fuel feeder can be designed to save space.
Vorteilhaft ist es somit auch, dass das Innere des Gehäuses zumindest näherungsweise quaderförmig ausgestaltet ist. Durch eine Trennwand kann hierbei eine Aufteilung in die beiden quaderförmigen Verteilerräume erfolgen. Möglich ist es auch, dass das erste Brennstoffverteilerstück und das zweite Brennstoffverteilerstück nebeneinander und parallel zueinander angeordnet sind.It is thus also advantageous that the interior of the housing is configured at least approximately cuboid. By a partition, this can be done a division into the two cuboid distribution spaces. It is also possible that the first fuel distributor and the second fuel distributor are arranged side by side and parallel to each other.
Vorteilhaft ist es, dass das erste Brennstoffverteilerstück zumindest teilweise aus einem metallischen Werkstoff ausgebildet ist und dass das zweite Brennstoffverteilerstück zumindest teilweise aus einem auf Kunststoff basierenden Werkstoff ausgebildet ist, wobei das gemeinsame Gehäuse teilweise aus dem metallischen Werkstoff und teilweise aus dem auf Kunststoff basierenden Werkstoff ausgebildet ist. Hierdurch ist insbesondere eine Kombination eines Stahlrails für die Erdgasanwendung und eines Kunststoffrails für die Benzinanwendung möglich. Hierdurch kann eine zuverlässige Verteilung und gegebenenfalls Speicherung sowohl des Erdgases als auch des Benzins und gleichzeitig eine kosten- und gewichtsoptimierte Ausgestaltung des Brennstoffzuteilers erreicht werden.It is advantageous that the first Brennstoffverteilerstück is at least partially formed of a metallic material and that the second Brennstoffverteilerstück is at least partially formed of a plastic-based material, wherein the common housing partially formed of the metallic material and partially of the plastic-based material is. As a result, in particular, a combination of a steel rail for natural gas application and a plastic rail for gasoline application is possible. In this way, a reliable distribution and optionally storage of both the natural gas and the gasoline and at the same time a cost and weight-optimized design of the fuel meter can be achieved.
Die Anschlussstellen des ersten Brennstoffverteilerstücks und die Anschlussstellen des zweiten Brennstoffverteilerstücks sind in vorteilhafter Weise an dem gemeinsamen Gehäuse ausgestaltet. Hierbei ist eine Reduzierung der Anbaustellen an einem Saugrohr oder einem Zylinder der Brennkraftmaschine möglich, da die beiden Einspritzventile für den jeweiligen Zylinder nahe beieinander angeschlossen werden können.The connection points of the first Brennstoffverteilerstücks and the connection points of the second fuel distributor are designed in an advantageous manner to the common housing. Here, a reduction of cultivation sites on a suction pipe or a cylinder of the internal combustion engine is possible because the two injectors for the respective cylinder can be connected close to each other.
Bevorzugte Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung anhand der beigefügten Zeichnung näher erläutert. Es zeigt:
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Fig. 1 eine schematische, auszugsweise, räumliche Darstellung eines Brennstoffzuteilers entsprechend einem Ausführungsbeispiel der Erfindung.
-
Fig. 1 a schematic, partial, spatial representation of a Brennstoffzuteilers according to an embodiment of the invention.
Das Gehäuse 10 weist eine erste Seite 11 und eine zweite Seite 12 auf. Hierbei kann die erste Seite 11 aus einem ersten Teil 11 ausgestaltet sein, während die zweite Seite 12 aus einem zweiten Teil 12 ausgestaltet ist. Die Teile 11, 12 können dann auch aus unterschiedlichen Werkstoffen gebildet sein. Speziell kann der erste Teil 11 aus einem metallischen Werkstoff, insbesondere einem Stahl, gebildet sein. Der zweite Teil 12 kann aus einem auf einem Kunststoff basierenden Werkstoff gebildet sein. Allerdings ist auch eine einteilige Ausgestaltung möglich, bei der das Gehäuse 10 und somit beide Seiten 11, 12 aus einem einzigen Werkstoff, insbesondere einem Stahl, gebildet sind.The housing 10 has a first side 11 and a second side 12. Here, the first side 11 may be configured from a first part 11, while the second side 12 is configured from a second part 12. The parts 11, 12 can then also be formed of different materials. Specifically, the first part 11 may be formed of a metallic material, in particular a steel. The second part 12 may be formed of a plastic based material. However, a one-piece design is possible in which the housing 10 and thus both sides 11, 12 are formed of a single material, in particular a steel.
Im Inneren (Innenraum) 15 des Gehäuses 10 ist eine Trennwand 16 angeordnet, die das Innere 15 des Gehäuses 10 in einen ersten Verteilerraum 17 für das erste Brennstoffverteilerstück 2 und einen zweiten Verteilerraum 18 für das zweite Brennstoffverteilerstück 3 aufteilt. Der erste Verteilerraum 17 kann hierbei auch die Funktion eines Speichers, insbesondere Druck- und Volumenspeichers, aufweisen. Ferner kann auch der zweite Verteilerraum 18 die Funktion eines Speichers, insbesondere eines Druck- und Volumenspeichers, aufweisen. In dem ersten Verteilerraum 17 befindet sich im Betrieb durch hohen Druck komprimiertes Erdgas, das beispielsweise in einem geeigneten Speicher mit einem Druck von etwa 20 MPa (200 bar) bevorratet ist und über den Zulauf 5 in den ersten Verteilerraum 17 geführt wird. Außerdem befindet sich im Betrieb im zweiten Verteilerraum 18 des zweiten Brennstoffverteilerstücks 3 unter einem gewissen Druck stehender Benzinbrennstoff, der über eine Pumpe aus einem Brennstofftank in den zweiten Verteilerraum 8 gefördert wird. Die Trennwand 16 trennt einerseits das komprimierte Erdgas im ersten Brennstoffverteilerstück 2 von dem andererseits vorgesehenen Benzin im zweiten Brennstoffverteilerstück 3.Inside (interior) 15 of the housing 10, a partition wall 16 is arranged, which divides the interior 15 of the housing 10 into a first distributor space 17 for the
In diesem Ausführungsbeispiel ist ein Trennelement 19 mit einem Z-förmigen Profil vorgesehen. In der
Der Abschnitt 20 des Trennelements 19 liegt an einem Abschnitt 22 einer Innenwand 23 des Gehäuses 10 an. Der Abschnitt 21 liegt an einem Abschnitt 24 der Innenwand 23 an. Das Trennelement 19 ist hierbei mit einer hohen Steifigkeit ausgestaltet. Das Trennelement 19 dient als innenliegendes Schwert, das durch seine Steifigkeit neben einer Trennung der beiden Verteilerräume 17, 18 auch ein vorteilhaftes dynamisches Verhalten ermöglicht.The section 20 of the separating element 19 bears against a section 22 of an inner wall 23 of the housing 10. The section 21 bears against a section 24 of the inner wall 23. The separating element 19 is designed here with a high rigidity. The separating element 19 serves as an internal sword, which, by virtue of its rigidity, permits not only a separation of the two distribution spaces 17, 18 but also an advantageous dynamic behavior.
Das Innere 15 des Gehäuses 10 ist in diesem Ausführungsbeispiel quaderförmig ausgestaltet. Durch die Aufteilung des Inneren 15 des Gehäuses 10 mittels des Trennelements 19 mit Z-förmigem Profil ergibt sich auch eine quaderförmige Ausgestaltung des ersten Verteilerraums 17 und eine quaderförmige Ausgestaltung des zweiten Verteilerraums 18. Hierbei sind die beiden Verteilerräume 17, 18 gleich groß ausgestaltet. Ferner liegen die beiden Verteilerräume 17, 18 nebeneinander und diese erstrecken sich auch parallel zueinander durch das Gehäuse 10 des Brennstoffzuteilers 1. Dadurch sind auch das erste Brennstoffverteilerstück 2 und das zweite Brennstoffverteilerstück 3 nebeneinander und parallel zueinander angeordnet.The interior 15 of the housing 10 is designed cuboid in this embodiment. By dividing the interior 15 of the housing 10 by means of the separating element 19 with a Z-shaped profile, there is also a parallelepiped configuration of the first distributor space 17 and a parallelepiped configuration of the second distributor space 18. Here, the two distribution spaces 17, 18 are of equal size. Further, the two distribution spaces 17, 18 are adjacent to each other and these also extend parallel to each other through the housing 10 of the
In
Der Brennstoffzuteiler 1 weist außerdem Halter 29, 30 auf. Wenn der Brennstoffzuteiler 1 mit geeigneten Einspritzventilen, insbesondere den Einspritzventilen 25, 26, an eine Brennkraftmaschine montiert ist, dann können die Halter 29, 30 als Befestigungshalter 29, 30 zum Befestigen des gesamten Brennstoffzuteilers 1 an einem Saugrohr, einem Zylinderkopf oder dergleichen der Brennkraftmaschine dienen. Die Einspritzventile 25, 26 können hierbei einen Brennraum eines Zylinders der Brennkraftmaschine zugeordnet sein. Außerdem weist der Brennstoffzuteiler 1 einen Sensor 31 auf, der den Druck und die Temperatur im ersten Verteilerraum 17 des ersten Brennstoffverteilerstücks 2 sowie den Druck und die Temperatur im zweiten Verteilerraum 18 des zweiten Brennstoffverteilerstücks 3 misst. Hierbei ist über eine einzige elektrische Anschlussstelle 32 eine elektrische Verbindung mit einem Steuergerät oder dergleichen möglich, um die Messsignale beziehungsweise Messdaten zu übertragen. Somit ist die Anzahl der erforderlichen Signal- beziehungsweise Datenübertragungskabel im Vergleich zu einer Ausgestaltung mit zwei getrennten Brennstoffverteilerstücken optimiert.The
Somit kann der Brennstoffzuteiler 1 des Ausführungsbeispiels der Erfindung in kompakter Weise ausgestaltet sein. Hierbei verringert sich der erforderliche Bauraum im Fahrzeug. Außerdem entfällt ein separates Brennstoffverteilerstück-Hauptrohr mit dazugehörigen Haltern und Endkappen. Ferner ist die Anzahl der Montageeinzelteile reduziert, was sich auch günstig auf die Montagezeit auswirkt. Die Anzahl der Anbaustellen am Saugrohr oder Zylinder kann ebenfalls reduziert werden. Außerdem kann der Brennstoffzuteiler 1 mit geringem konstruktiven Aufwand an unterschiedliche Zylinderabstände oder an verschiedene Zylinderanzahlen der Brennkraftmaschine angepasst werden.Thus, the
Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt.The invention is not limited to the described embodiments.
Claims (8)
- Fuel distributor (1), in particular a combined fuel distribution rail for fuel injection systems of mixture-compressing spark-ignition internal combustion engines, comprising a first fuel distributor piece (2) which serves for distributing natural gas to a plurality of connection points (4) of the first fuel distributor piece (2), and at least a second fuel distributor piece (3) which serves for distributing petrol to a plurality of connection points (6, 7, 8) of the second fuel distributor piece, wherein the first fuel distributor piece (2) and the second fuel distributor piece (3) are at least substantially integrated into a common housing (10), wherein a separating wall (16) arranged in the interior (15) of the housing (10) is provided, which separating wall divides the interior (15) of the housing (10) into a first distributor space (17) for the first fuel distributor piece (2) and into a second distributor space (18) for the second fuel distributor piece (3),
characterized in that
a separating element (19) which comprises the separating wall (16) is arranged in the interior (15) of the housing (10), in that the separating element (19) at the first distributor space (17) bears at least in certain portions against an inner wall (23) of the housing (10), and in that the separating element (19) at the second distributor space (18) bears at least in certain portions against the inner wall (23) of the housing (10). - Fuel distributor according to Claim 1,
characterized in that
the separating element (19) has a Z-shaped profile. - Fuel distributor according to Claim 1 or 2,
characterized in that
the separating element (19) has a high degree of rigidity. - Fuel distributor according to one of Claims 1 to 3,
characterized in that
the first distributor space (17) is configured at least approximately as a parallelepipedal first distributor space (17), and/or in that the second distributor space (18) is configured at least approximately as a parallelepipedal second distributor space space (18), and/or in that the first distributor space (17) and the second distributor space (18) are arranged next to one another in the interior (15) of the housing (10), and/or in that the first distributor space (17) and the second distributor space (18) are configured at least approximately to have the same size. - Fuel distributor according to one of Claims 1 to 4,
characterized in that
an interior (15) of the housing (10) is configured to be at least approximately parallelepipedal. - Fuel distributor according to one of Claims 1 to 5,
characterized in that
the first fuel distributor piece (2) and the second fuel distributor piece (3) are arranged next to one another and parallel to one another. - Fuel distributor according to one of Claims 1 to 6,
characterized in that
the first fuel distributor piece (2) is formed at least partially from a metallic material, and in that the second fuel distributor piece (3) is formed at least partially from a material based on at least one plastic, wherein the common housing (10) is formed partially from the metallic material and partially from the material based on plastic or plastics. - Fuel distributor according to one of Claims 1 to 7,
characterized in that
the connection points (4) of the first fuel distributor piece (2) and the connection points (6, 7, 8) of the second fuel distributor piece (3) are configured on the common housing (10), and/or in that a connection point (5) for feeding natural gas into the first fuel distributor piece (2) is configured on the common housing (10), and/or in that a connection point (9) for feeding petrol into the second fuel distributor piece (3) is configured on the common housing (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010062699 DE102010062699A1 (en) | 2010-12-09 | 2010-12-09 | Fuel feeder for gasoline and natural gas |
PCT/EP2011/069317 WO2012076265A1 (en) | 2010-12-09 | 2011-11-03 | Fuel distributor for gasoline and natural gas |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2649297A1 EP2649297A1 (en) | 2013-10-16 |
EP2649297B1 true EP2649297B1 (en) | 2015-02-25 |
Family
ID=44906121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11778599.8A Active EP2649297B1 (en) | 2010-12-09 | 2011-11-03 | Fuel distributor for gasoline and natural gas |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2649297B1 (en) |
CN (1) | CN103249942B (en) |
BR (1) | BR112013013922A2 (en) |
DE (1) | DE102010062699A1 (en) |
WO (1) | WO2012076265A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013217515A1 (en) | 2013-09-03 | 2015-03-05 | Robert Bosch Gmbh | Arrangement with a fuel feeder and several holders |
DE102015210756A1 (en) * | 2015-06-12 | 2016-12-15 | Robert Bosch Gmbh | Gas injector arrangement, operating method for a gas injector arrangement and internal combustion engine |
WO2019115857A1 (en) * | 2017-12-14 | 2019-06-20 | Wärtsilä Finland Oy | A fluid distribution element for a piston engine and a piston engine equipped with such a fluid distribution element |
CN113217242B (en) * | 2021-05-26 | 2022-04-19 | 河南柴油机重工有限责任公司 | Common rail system suitable for V-type dual-fuel engine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4131537A1 (en) * | 1991-09-21 | 1993-04-01 | Bosch Gmbh Robert | FUEL DISTRIBUTOR |
US6588406B2 (en) * | 2000-06-07 | 2003-07-08 | Radu Oprea | Dual fuel metering and supply system for internal combustion engines |
ITBO20040114A1 (en) * | 2004-02-27 | 2004-05-27 | Magneti Marelli Powertrain Spa | BI-MATERIAL FUEL MANIFOLD FOR AN INTERNAL COMBUSTION ENGINE WITH DIRECT FUEL INJECTION AND METHOD FOR ITS REALIZATION |
EP1598546B1 (en) * | 2004-05-17 | 2008-04-30 | Ford Global Technologies, LLC | Fuel Rail Component |
EP2009277B1 (en) * | 2007-06-28 | 2011-08-10 | Ford Global Technologies, LLC | An internal combustion engine system, and a method in such an engine system |
CN201513255U (en) * | 2009-06-01 | 2010-06-23 | 奉化市皓盛铁路电务器材有限公司 | Gas common rail device of dual-fuel combined power vehicle |
-
2010
- 2010-12-09 DE DE201010062699 patent/DE102010062699A1/en not_active Withdrawn
-
2011
- 2011-11-03 WO PCT/EP2011/069317 patent/WO2012076265A1/en active Application Filing
- 2011-11-03 EP EP11778599.8A patent/EP2649297B1/en active Active
- 2011-11-03 CN CN201180058952.3A patent/CN103249942B/en active Active
- 2011-11-03 BR BR112013013922A patent/BR112013013922A2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2012076265A1 (en) | 2012-06-14 |
BR112013013922A2 (en) | 2016-09-13 |
DE102010062699A1 (en) | 2012-06-21 |
EP2649297A1 (en) | 2013-10-16 |
CN103249942B (en) | 2017-03-01 |
CN103249942A (en) | 2013-08-14 |
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