DE102004034672A1 - Fuel injection device for an internal combustion engine - Google Patents
Fuel injection device for an internal combustion engine Download PDFInfo
- Publication number
- DE102004034672A1 DE102004034672A1 DE200410034672 DE102004034672A DE102004034672A1 DE 102004034672 A1 DE102004034672 A1 DE 102004034672A1 DE 200410034672 DE200410034672 DE 200410034672 DE 102004034672 A DE102004034672 A DE 102004034672A DE 102004034672 A1 DE102004034672 A1 DE 102004034672A1
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- pressure
- fuel injection
- pump
- 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.)
- Withdrawn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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
-
- 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
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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
Die Kraftstoffeinspritzeinrichtung weist jeweils eine Kraftstoffhochdruckpumpe (10) und ein mit dieser verbundenes Kraftstoffeinspritzventil (12) für jeweils einen Zylinder der Brennkraftmaschine auf. Die Kraftstoffhochdruckpumpe (10) weist einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) auf, der einen Pumpenarbeitsraum (22) begrenzt, welcher mit dem Kraftstoffeinspritzventil (12) verbunden ist. Es ist ein elektrisch betätigtes Steuerventil (23) vorgesehen, durch das zumindest mittelbar eine Verbindung (21) des Pumpenarbeitsraums (22) mit einem Niederdruckbereich (54) gesteuert wird, wobei das Steuerventil (23) beim Förderhub des Pumpenkolbens (18) zu einer Kraftstoffeinspritzung geschlossen wird und zu einer Beendigung der Kraftstoffeinspritzung geöffnet wird, wobei unter Hochdruck stehender Kraftstoff in den Niederdruckbereich (54) abgesteuert wird. In der Verbindung (21) des Pumpenarbeitsraums (22) mit dem Niederdruckbereich (54) ist zwischen dem Steuerventil (23) und dem Niederdruckbereich (54) eine Druckschwingungsdämpfungseinrichtung (62) angeordnet.The fuel injection device has in each case a high-pressure fuel pump (10) and a fuel injection valve (12) connected thereto for each cylinder of the internal combustion engine. The high-pressure fuel pump (10) has a pump piston (18) which is driven by the internal combustion engine in a lifting movement and which delimits a pump working space (22) which is connected to the fuel injection valve (12). An electrically actuated control valve (23) is provided, by which at least indirectly a connection (21) of the pump working chamber (22) is controlled with a low-pressure region (54), wherein the control valve (23) during the delivery stroke of the pump piston (18) to a fuel injection is closed and is opened to a termination of the fuel injection, wherein high-pressure fuel is diverted into the low-pressure region (54). In the connection (21) of the pump working chamber (22) with the low-pressure region (54), a pressure-vibration damping device (62) is arranged between the control valve (23) and the low-pressure region (54).
Description
Die Erfindung geht aus von einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine nach der Gattung des Anspruchs 1.The The invention is based on a fuel injection device for an internal combustion engine according to the preamble of claim 1.
Eine
solche Kraftstoffeinspritzeinrichtung ist durch die
Vorteile der ErfindungAdvantages of invention
Die erfindungsgemäße Kraftstoffeinspritzeinrichtung mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, dass die Belastung der im Niederdruckbereich angeordneten Komponenten durch die Druckschwingungsdämpfungseinrichtung verringert ist, so dass deren Haltbarkeit verbessert ist und diese gegebenenfalls kostengünstiger und mit geringerer Festigkeit ausgeführt werden können.The Fuel injection device according to the invention with the features according to claim 1 has in contrast the advantage that the load arranged in the low pressure area Components reduced by the pressure vibration damping device is so that their durability is improved and this if necessary cost-effective and can be carried out with less strength.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Kraftstoffeinspritzeinrichtung angegeben. Die Ausbildung gemäß den Ansprüchen 2 und 3 ermöglicht einen geringen Fertigungsaufwand, da nur eine einzige Druckschwingungsdämpfungseinrichtung erforderlich ist. Die Ausbildung gemäß Anspruch 4 ermöglicht auf einfache Weise eine Zusammenführung der Verbindungen der einzelnen Kraftstoffhochdruckpumpen zu der gemeinsamen Leitung. Die Ausbildung gemäß Anspruch 5 ermöglicht eine Befüllung des Pumpenarbeitsraums beim Saughub des Pumpenkolbens aus dem Niederdruckbereich. Die Ausbildung gemäß Anspruch 7 ermöglicht einen einfachen und wirkungsvollen Aufbau der Druckschwingungsdämpfungseinrichtung. Durch die Ausbildung gemäß Anspruch 8 ist sichergestellt, dass auch bei einer Beschädigung des Dämpfungselements kein Kraftstoff austreten kann.In the dependent claims are advantageous embodiments and refinements of the fuel injection device according to the invention specified. The training according to claims 2 and 3 allows a low production cost, since only a single pressure damping device is required. The training according to claim 4 allows easy way to merge the connections of the individual high-pressure fuel pumps to the common line. The training according to claim 5 allows a filling the pump working chamber during the suction stroke of the pump piston from the low pressure range. The training according to claim 7 allows a simple and effective construction of the pressure vibration damping device. By training according to claim 8 ensures that even with damage to the damping element no fuel can escape.
Zeichnungdrawing
Ein
Ausführungsbeispiel
der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung
näher erläutert. Es
zeigen
Beschreibung des Ausführungsbeispielsdescription of the embodiment
In
Die
Kraftstoffhochdruckpumpe
Das
Kraftstoffeinspritzventil
Im
Ventilkörper
Die
Schließfeder
Die
Verbindung
Erfindungsgemäß ist in
der Verbindung
Vorzugsweise
sind bei einer mehrzylindrigen Brennkraftmaschine
Die
Druckschwingungsdämpfungseinrichtung
Das
Dämpfungselement
Die
Verbindungen
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410034672 DE102004034672A1 (en) | 2004-07-17 | 2004-07-17 | Fuel injection device for an internal combustion engine |
EP05103971A EP1617072A3 (en) | 2004-07-17 | 2005-05-12 | Fuel-injection device for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410034672 DE102004034672A1 (en) | 2004-07-17 | 2004-07-17 | Fuel injection device for an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004034672A1 true DE102004034672A1 (en) | 2006-02-16 |
Family
ID=35149383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410034672 Withdrawn DE102004034672A1 (en) | 2004-07-17 | 2004-07-17 | Fuel injection device for an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1617072A3 (en) |
DE (1) | DE102004034672A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006027780A1 (en) | 2006-06-16 | 2007-12-20 | Robert Bosch Gmbh | fuel injector |
GB2538711A (en) * | 2015-05-22 | 2016-11-30 | Delphi Automotive Systems Lux | Damper for high pressure fuel pump |
DE102016209546A1 (en) * | 2016-06-01 | 2017-12-07 | Robert Bosch Gmbh | Fuel injection valve |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19844891A1 (en) * | 1998-09-30 | 2000-04-06 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engines |
DE10000384A1 (en) * | 2000-01-07 | 2001-07-12 | Volkswagen Ag | Damper for fuel injection pressure fluctuations comprises variable volume body or elastic layer or fuelproofly sheathed body or air volume directly at pump intake for immediate pressure smoothing. |
EP1411236B1 (en) * | 2002-10-19 | 2012-10-10 | Robert Bosch Gmbh | Device for damping of pressure pulsations in a fluid system, especially in a fuel system of an internal combustion engine |
-
2004
- 2004-07-17 DE DE200410034672 patent/DE102004034672A1/en not_active Withdrawn
-
2005
- 2005-05-12 EP EP05103971A patent/EP1617072A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP1617072A2 (en) | 2006-01-18 |
EP1617072A3 (en) | 2006-05-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |