DE102008044056A1 - Fuel injector - Google Patents
Fuel injector Download PDFInfo
- Publication number
- DE102008044056A1 DE102008044056A1 DE102008044056A DE102008044056A DE102008044056A1 DE 102008044056 A1 DE102008044056 A1 DE 102008044056A1 DE 102008044056 A DE102008044056 A DE 102008044056A DE 102008044056 A DE102008044056 A DE 102008044056A DE 102008044056 A1 DE102008044056 A1 DE 102008044056A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- fuel injection
- channels
- injection
- group
- 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.)
- Withdrawn
Links
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the combustion chamber
-
- 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
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/046—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into both the combustion chamber and the intake conduit
-
- 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
- F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
- F02M69/36—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages
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
Es wird eine Kraftstoffeinspritzvorrichtung für einen Mehrzylinder-Verbrennungsmotor angegeben, die einen Luftströmungsweg (18) zum Zuführen von Verbrennungsluft mit endseitig voneinander getrennten, zu den einzelnen Zylindern (11) führenden Strömungskanälen (17) und ein duales Einspritzsystem mit einer ersten Gruppe von Kraftstoffeinspritzventilen (19), die Kraftstoff direkt in jeweils einen Zylinder (11) einspritzen, und mit einer zweiten Gruppe von Kraftstoffeinspritzventilen (20), die Kraftstoff in die Strömungskanäle (17) einspritzen, aufweist. Zur Reduzierung der Fertigungskosten für die Kraftstoffeinspritzvorrichtung, verbunden mit Gewichtsreduzierung und Systemvereinfachung, sind die Kraftstoffeinspritzventile (20) der zweiten Gruppe als Mehrstrahl-Einspritzventile (26 27), die mindestens zwei separate Kraftstoffstrahlen (24, 25) gleichzeitig abspritzen, ausgebildet und im Luftführungsweg (18) so angeordnet, dass die abgespritzten Kraftstoffstrahlen (24, 25) in verschiedene Strömungskanäle (17) gelangen.There is provided a fuel injection apparatus for a multi-cylinder internal combustion engine having an air flow path (18) for supplying combustion air with end-to-end flow channels (17) leading to the individual cylinders (11) and a dual injection system having a first group of fuel injection valves (19 ) injecting fuel directly into each one of the cylinders (11) and with a second group of fuel injection valves (20) injecting fuel into the flow channels (17). In order to reduce the manufacturing costs of the fuel injection device, combined with weight reduction and system simplification, the fuel injection valves (20) of the second group as multi-jet injectors (26 27), the at least two separate fuel jets (24, 25) simultaneously spray, formed and in Luftführungsweg ( 18) arranged so that the sprayed fuel jets (24, 25) reach different flow channels (17).
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Kraftstoffeinspritzvorrichtung für einen Mehrzylinder-Verbrennungsmotor nach dem Oberbegriff des Anspruchs 1.The The invention is based on a fuel injection device for a multi-cylinder internal combustion engine according to the preamble of the claim 1.
Ein
bekanntes Kraftstoffeinspritzsystem, ein sog. Dual-Injection-System
für einen vierzylindrigen Verbrennungsmotor (
Eine
bekannte Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine
mit mindestens zwei Zylindern (
Offenbarung der ErfindungDisclosure of the invention
Die erfindungsgemäße Kraftstoffeinspritzvorrichtung mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch die Einspritzung von Kraftstoff in mehrere, zu verschiedenen Zylindern führende Strömungskanäle mittels eines einzigen Mehrstrahl-Einspritzventils, das mindestens zwei Kraftstoffstrahlen in verschiedene, divergierende Richtungen abspritzt, ein Teil der Kraftstoffeinspritzventile der zweiten Gruppe, die in der Regel nur als Hilfskomponenten eingesetzt werden, eingespart und damit Fertigungs- und Montagekosten für das duale Einspritzsystem reduziert werden können. Mit der reduzierten Zahl der Kraftstoffeinspritzventile geht eine Gewichtseinsparung und eine Systemvereinfachung einher.The Fuel injection device according to the invention with the features of claim 1 has the advantage that by the Injection of fuel into several, to different cylinders leading flow channels by means of a single multi-jet injector, the at least two fuel jets in different, divergent directions cums, part of Fuel injection valves of the second group, which usually only used as auxiliary components, saved and thus Production and assembly costs for the dual injection system can be reduced. With the reduced number of fuel injectors goes along with a weight saving and a system simplification.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Kraftstoffeinspritzvorrichtung möglich.By the measures listed in the further claims are advantageous developments and improvements in the claim 1 specified fuel injection possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung sind die Kraftstoffstrahlen eines jeden Mehrstrahl-Einspritzventils von dem Mehrstrahl-Einspritzventil bis zu den Strömungskanälen in voneinander hermetisch getrennten Einspritzkanälen geführt. Dadurch wird eine pneumatische Kopplung der Strömungskanäle durch das Einfügen des Mehrstrahl-Einspritzventils vermieden, so dass einerseits eine exakte Gleichverteilung der Kraftstoffmenge auf die Strömungskanäle sichergestellt und andererseits ein Luftübersprechen zwischen den Strömungskanälen durch Schwingen der Luftsäulen in den Strömungskanälen vermieden wird, was zu einer ungleichen Verteilung von Kraftstoff und Luft auf die Zylinder führen würde.According to one advantageous embodiment of the invention are the fuel jets of each multi-jet injection valve from the multi-jet injection valve hermetically up to the flow channels in each other guided separate injection channels. This will a pneumatic coupling of the flow channels avoided by inserting the multi-jet injector, so that on the one hand an exact equal distribution of fuel quantity ensured on the flow channels and on the other hand Air crosstalk between the flow channels by swinging the air columns in the flow channels is avoided, resulting in an unequal distribution of fuel and air would lead to the cylinders.
Gemäß einer vorteilhaften Ausführungsform der Erfindung weist der Luftströmungsweg mindestens ein Saugmodul mit zwei getrennten, jeweils einen Strömungskanal bildenden Saugkanälen auf. In dem Saugmodul ist eine Aufnahmekammer für ein Zweistrahl-Einspritzventil und die zwei zu den Saugkanälen führenden Einspritzkanälen ausgebildet, die von der Aufnahmekammer abgehen. Das Saugmodul wird vorzugsweise als Spritz- oder Druckguß ausgeführt, in den sich Kammer und Kanäle leicht einformen lassen. Nach Platzieren des Zweistrahl-Einspritzventils in der Aufnahmekammer ist sichergestellt, dass jeder Kraftstoffstrahl in einen separaten, hermetisch von dem anderen Strömungskanal getrennten Strömungskanal einspritzt, so dass die gewünschte Gleichverteilung der Kraftstoffmenge auf beide Zylinder gewährleistet ist. Eine pneumatische Kopplung der beiden Strömungskanäle über die Einspritzkanäle und die Aufnahmekammer ist ausgeschlossen bzw. auf ein Minimum reduziert.According to one advantageous embodiment of the invention, the air flow path at least one suction module with two separate, one flow channel forming suction channels. In the suction module is a receiving chamber for a two-jet injector and the two to the Suction channels leading injection channels formed, which depart from the receiving chamber. The suction module is preferably designed as injection or pressure casting, in which chamber and channels can easily be molded. After placing the two-jet injection valve in the receiving chamber Ensures that every fuel spray into a separate, hermetic separate from the other flow channel flow channel injected so that the desired uniform distribution of Fuel quantity is guaranteed on both cylinders. A pneumatic coupling of the two flow channels via the injection channels and the receiving chamber is excluded or reduced to a minimum.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The The invention is based on an embodiment shown in the drawings explained in more detail in the following description. Show it:
Der
hier beispielhaft für einen Mehrzylinder-Verbrennungsmotors
eines Kraftfahrzeugs angezogene Vierzylinder-Verbrennungsmotor weist
vier Zylinder
Die
Kraftstoffeinspritzvorrichtung umfasst einen Luftströmungsweg
Die
erste Gruppe von Kraftstoffeinspritzventilen
Um
die Fertigungskosten für die Kraftstoffeinspritzvorrichtung
zu senken sind die Kraftstoffeinspritzventile
In
einer konstruktiven Ausführung der Kraftstoffeinspritzvorrichtung
weist der Luftströmungsweg
Ein
identisch ausgebildetes Saugmodul
Stromaufwärts
sind das Saugmodul
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - US 2006/0096572 A1 [0002] US 2006/0096572 A1 [0002]
- - DE 3808396 A1 [0003, 0015] - DE 3808396 A1 [0003, 0015]
- - DE 4420063 A1 [0015] - DE 4420063 A1 [0015]
Claims (5)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008044056A DE102008044056A1 (en) | 2008-11-25 | 2008-11-25 | Fuel injector |
KR1020117011871A KR101677916B1 (en) | 2008-11-25 | 2009-11-24 | Fuel injection device |
PCT/EP2009/065701 WO2010060893A1 (en) | 2008-11-25 | 2009-11-24 | Fuel injection device |
EP09759727A EP2370688B1 (en) | 2008-11-25 | 2009-11-24 | Fuel injection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008044056A DE102008044056A1 (en) | 2008-11-25 | 2008-11-25 | Fuel injector |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008044056A1 true DE102008044056A1 (en) | 2010-05-27 |
Family
ID=41667535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008044056A Withdrawn DE102008044056A1 (en) | 2008-11-25 | 2008-11-25 | Fuel injector |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2370688B1 (en) |
KR (1) | KR101677916B1 (en) |
DE (1) | DE102008044056A1 (en) |
WO (1) | WO2010060893A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012072346A1 (en) * | 2010-11-29 | 2012-06-07 | Robert Bosch Gmbh | Fuel injection system for an internal combustion engine |
DE102015214595A1 (en) | 2015-07-31 | 2017-02-02 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine, in particular a motor vehicle with dual fuel injection |
DE102015215038A1 (en) | 2015-08-06 | 2017-02-09 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine, in particular a motor vehicle with dual fuel injection |
DE102014221817B4 (en) | 2013-11-01 | 2024-03-21 | Suzuki Motor Corporation | Fuel injector |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3808396A1 (en) | 1988-03-12 | 1989-09-21 | Bosch Gmbh Robert | FUEL INJECTION VALVE |
DE4420063A1 (en) | 1994-06-08 | 1995-12-14 | Bayerische Motoren Werke Ag | Fuel injection valve for IC engines |
US20060096572A1 (en) | 2004-11-11 | 2006-05-11 | Toyota Jidosha Kabushiki Kaisha | Control apparatus for internal combustion engine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07119590A (en) * | 1993-10-22 | 1995-05-09 | Mitsubishi Motors Corp | Air assist fuel injection device |
JPH0972264A (en) * | 1995-09-07 | 1997-03-18 | Hitachi Ltd | Fuel supplying device and method for internal combustion engine |
JPH1061531A (en) * | 1996-08-20 | 1998-03-03 | Hitachi Ltd | Mixture forming device and engine system for internal combustion engine |
JP2005201188A (en) * | 2004-01-19 | 2005-07-28 | Toyota Motor Corp | Spark ignition internal combustion engine |
DE102007056555A1 (en) * | 2007-11-23 | 2009-05-28 | Robert Bosch Gmbh | Fuel injector |
-
2008
- 2008-11-25 DE DE102008044056A patent/DE102008044056A1/en not_active Withdrawn
-
2009
- 2009-11-24 KR KR1020117011871A patent/KR101677916B1/en active IP Right Grant
- 2009-11-24 WO PCT/EP2009/065701 patent/WO2010060893A1/en active Application Filing
- 2009-11-24 EP EP09759727A patent/EP2370688B1/en not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3808396A1 (en) | 1988-03-12 | 1989-09-21 | Bosch Gmbh Robert | FUEL INJECTION VALVE |
DE4420063A1 (en) | 1994-06-08 | 1995-12-14 | Bayerische Motoren Werke Ag | Fuel injection valve for IC engines |
US20060096572A1 (en) | 2004-11-11 | 2006-05-11 | Toyota Jidosha Kabushiki Kaisha | Control apparatus for internal combustion engine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012072346A1 (en) * | 2010-11-29 | 2012-06-07 | Robert Bosch Gmbh | Fuel injection system for an internal combustion engine |
DE102014221817B4 (en) | 2013-11-01 | 2024-03-21 | Suzuki Motor Corporation | Fuel injector |
DE102015214595A1 (en) | 2015-07-31 | 2017-02-02 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine, in particular a motor vehicle with dual fuel injection |
DE102015215038A1 (en) | 2015-08-06 | 2017-02-09 | Robert Bosch Gmbh | Method and device for operating an internal combustion engine, in particular a motor vehicle with dual fuel injection |
Also Published As
Publication number | Publication date |
---|---|
KR20110086713A (en) | 2011-07-29 |
EP2370688A1 (en) | 2011-10-05 |
WO2010060893A1 (en) | 2010-06-03 |
KR101677916B1 (en) | 2016-11-21 |
EP2370688B1 (en) | 2013-01-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R005 | Application deemed withdrawn due to failure to request examination |