EP1476655B1 - Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine - Google Patents
Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine Download PDFInfo
- Publication number
- EP1476655B1 EP1476655B1 EP02792635A EP02792635A EP1476655B1 EP 1476655 B1 EP1476655 B1 EP 1476655B1 EP 02792635 A EP02792635 A EP 02792635A EP 02792635 A EP02792635 A EP 02792635A EP 1476655 B1 EP1476655 B1 EP 1476655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- pressure
- space
- fuel
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
-
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
- F02M45/08—Injectors peculiar thereto
-
- 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
Definitions
- the invention is based on a Fuel injection device for an internal combustion engine according to the preamble of claim 1.
- Such a fuel injection device is characterized by the EP 0 987 431 A2.
- These Fuel injection device has a High-pressure fuel pump and a connected to this Fuel injector for each cylinder of Internal combustion engine.
- the high-pressure fuel pump points one by the internal combustion engine in a reciprocating motion powered pump piston having a pump working space limited.
- the fuel injection valve has one with the Pump work space associated pressure room and one Injection valve member, through which at least one Injection opening is controlled and by the in the Pressure chamber prevailing pressure against a closing force in Opening direction for releasing the at least one Injection opening is movable. It is a first electric actuated control valve provided by the one Connection of pump work space with a discharge chamber is controlled.
- control pressure chamber is replaced by a Control piston limited, the control piston of the im Control pressure chamber prevailing pressure applied in one Closing direction acts on the injection valve member and is movable together with the injection valve member.
- the Control pressure chamber has a connection with the Pump workroom on.
- To a fuel injection is the first control valve closed and the second Control valve open, so that in the control pressure chamber no High pressure can build up and the fuel injector can open.
- With opened second control valve flows however, from the pump working space via the control pressure chamber Fuel off, so that available for injection standing amount of fuel through the pump piston subsidized fuel quantity is reduced and also the reduced pressure available for injection becomes. It follows that the efficiency of Fuel injector is not optimal.
- the fuel injection device according to the invention with the Features according to claim 1 has the advantage that acted upon by the pressure prevailing in the control pressure chamber pressure End face of the control piston can be kept low, whereby required for the function réelle beflußquerroughen the throttle bodies at opened second control valve outflowing amount of fuel can be kept low and thus the efficiency of Fuel injection device is improved.
- FIG. 1 shows a Fuel injection device for an internal combustion engine in a schematic representation
- Figure 2 a in Figure 1 with II designated section of the Fuel injection device according to a modified Execution in an enlarged view
- Figure 3 the Section II of the fuel injection device according to a another modified embodiment
- Figure 4 shows a course a pressure at injection ports of a Fuel injection valve of the Fuel injector.
- FIG. 1 to 3 is a Fuel injection device for an internal combustion engine a motor vehicle shown.
- the internal combustion engine is preferably a self-igniting internal combustion engine.
- the Fuel injection device is preferably as So-called pump-nozzle unit is designed and has for each cylinder of the internal combustion engine one each High-pressure fuel pump 10 and connected to this Fuel injection valve 12, which has a common Form building unit.
- the Fuel injection device as a so-called pump-line-nozzle system be trained in which the High-pressure fuel pump and the fuel injection valve each cylinder is arranged separately from each other and over a line are connected together.
- the High-pressure fuel pump 10 has a pump body 14 with a cylinder bore 16 in which a pump piston 18th is tightly guided, at least indirectly by a Cam 20 of a camshaft of the internal combustion engine opposite the force of a return spring 19 in a lifting movement is driven.
- the pump piston 18 limited in the Cylinder bore 16 a pump working chamber 22, in the at Delivery stroke of the pump piston 18 Fuel under high pressure is compressed.
- the pump working chamber 22 becomes fuel from a fuel tank 24 of the motor vehicle fed.
- the fuel injection valve 12 has one with the Pump body 14 connected valve body 26, the may be formed in several parts, and in the one Injection valve member 28 in a bore 30th is guided longitudinally displaceable.
- the valve body 26 indicates its the combustion chamber of the cylinder of the internal combustion engine facing end region at least one, preferably a plurality Injection openings 32.
- the injection valve member 28 has at its the combustion chamber end facing a For example, about conical sealing surface 34, which with one in the valve body 26 in the combustion chamber facing End region formed valve seat 36 cooperates, from or after which the injection openings 32 dissipate.
- valve body 26 is between the injection valve member 28 and the bore 30 to the valve seat 36 toward an annular space 38th present, in its the valve seat 36 facing away End region by a radial extension of the bore 30 in a pressure chamber 40 surrounding the injection valve member 28 passes.
- the injection valve member 28 has the height of the Pressure chamber 40 by a cross-sectional reduction a Pressure shoulder 42 on.
- a biased Closing spring 44 At the end of the combustion chamber facing away from the Injector member 28 engages a biased Closing spring 44, through which the injection valve member 28th is pressed toward the valve seat 36.
- the closing spring 44 is arranged in a spring chamber 46 of the valve body 26, the adjoins the bore 30.
- the bore 48 is stepped in diameter and has a to Spring chamber 46 arranged portion 148 with a large Diameter on and facing away from the spring chamber 46 arranged portion 248 with a small diameter.
- the Control piston 50 is correspondingly in diameter as well stepped formed and has a in the bore portion 148th tightly guided area 150 with large diameter on and a tightly guided in the bore portion 248 area 250th with a small diameter.
- In the bore section 248 becomes through the end face of the area 250 of the control piston 50 limited as a movable wall, a control pressure chamber 52.
- an annular pressure surface 53rd formed with the area 150 of the control piston 50 in Bore portion 148 defines a further pressure chamber 54.
- the control piston 50 is one opposite this in the Diameter smaller piston rod 51 with the Injection valve member 28 connected.
- the control piston 50 can formed integrally with the injection valve member 28 is but preferably for reasons of assembly as a separate Part connected to the injection valve member 28.
- a channel 60 to the pressure chamber 40 of the Fuel injection valve 12.
- a channel 62 leads to the control pressure chamber 52.
- the control pressure chamber 52 also opens a channel 64, the makes a connection to a relief room when the at least indirectly, the fuel tank 24 or another area may serve in which a low pressure prevails.
- From the pump chamber 22 or channel 60 leads a connection 66 to a discharge space 24 from, through a first electrically operated control valve 68 controlled becomes.
- the control valve 68 may be as shown in FIG be designed as a 2/2-way valve.
- the connection 64 of Control pressure chamber 52 with the discharge chamber 24 is through controlling a second electrically operated control valve 70, which can be designed as a 2/2-way valve.
- a throttle point 63 is provided in the Connection 62 of the control pressure chamber 52 with the Pump work chamber 22 and in the connection of the control pressure chamber 52 with the Relief space 24, a throttle point 65 is provided.
- the throttle bodies 63,65 By suitable dimensioning of the throttle bodies 63,65 the inflow of fuel from the pump working space 22 in the control pressure chamber 52 and the outflow of fuel the control pressure chamber 52 to a required extent be set.
- a sufficient inflow of fuel in the control pressure chamber 52 is for a quick closing required and the fuel injection valve 12 sufficient drainage of fuel from the control pressure chamber 52 is for a quick opening of the Fuel injection valve 12 required.
- the Control valves 68,70 may be an electromagnetic actuator or have a piezoelectric actuator and are by a electronic control device 72 is controlled.
- the further pressure chamber 54 has a connection 56, for example, in the form of a channel, with the Pumping room 22, for example, in the channel 60 can lead.
- connection 56 is not a throttle point available.
- the additional pressure chamber 54 is thus bypassed the throttle point 63 of the connection 62 of the control pressure chamber 52 with the pump work chamber 22 directly to the Pumping room 22 connected and on the pressure surface 53rd the control piston 50 acts the same pressure as in Pump work chamber 22 and in the pressure chamber 40th
- a closing spring 44 supporting force in the closing direction on the Injection valve member 28 generated.
- FIG 2 is a detail of a modified embodiment the fuel injection device shown in which the basic structure is the same as described above, However, the pressure surface 53 at one of the control piston 50th separate piston 55 is formed.
- the control piston 50 in this case has only the tightly guided in the bore section 248 Control piston area 250, with its end face the Control pressure chamber 52 limited.
- the control piston 50 is over the piston rod 51 with the injection valve member 28th connected.
- the piston 55 replaces the spool area 150 the embodiment of Figure 1 and is also about a Piston rod 57 connected to the injection valve member 28, wherein the piston rod 51 of the control piston 50 through the Piston 55 and the piston rod 57 passes.
- FIG 3 is fragmentary a modified embodiment the fuel injection device shown in which the basic structure again the same as in the execution according to Figure 1, but the design of the control piston and the connection of the control pressure chamber 52 to the Pump working space 22 is modified.
- the control piston 50 in turn has the in the bore section 148 with larger diameter tightly guided area 150 and the im Bore portion 248 of smaller diameter tight guided area 250 on.
- the control pressure chamber 52nd limited and by the annular pressure surface 53 of the Control piston area 150, the further pressure chamber 54th limited.
- the further pressure chamber 54 is over the connection 56 with the channel 60 and over this with the Pump workspace 22 connected.
- connection 162 In the control piston area 250 is a connection 162, for example in the form of a Hole formed through which the control pressure chamber 52 with the further pressure chamber 54 is connected.
- connection 162 In the connection 162 is a throttle point 163 provided by the Compound 162 itself may be formed when using this is designed according to a small cross-section.
- the Bore portion 148 the same diameter as the Spring chamber 46.
- an intermediate disc 58th provided at which the closing spring 44 in the spring chamber 46th supported.
- Between the piston rod 51 and the Injection valve member 28 may be a shim 59th be arranged with the distance between the Control piston 50 and the injection valve member 28 is set can be.
- FIG. 4 is the Course of the pressure p at the injection openings 32 of the Fuel injection valve 12 over the time t during a Injection cycle shown.
- the suction stroke of the pump piston 18 gets this fuel from the fuel tank 24 supplied.
- the delivery stroke of the pump piston 18 begins the fuel injection with a pilot injection, wherein the first control valve 68 by the controller 72nd is closed, so that the pump chamber 22 from Relief space 24 is disconnected.
- the second control valve 70 is also opened so that the control pressure chamber 52 connected to the discharge chamber 24 is. In this case, in the control pressure chamber 52 no Build high pressure, as this to the relief space 24 out is relieved.
- Control valve 70 is closed, so that the control pressure chamber 52nd is separated from the discharge space 24.
- the first control valve 68 remains in its closed position. in the Control pressure chamber 52 builds up high pressure as in Pumping work chamber 22, so that on the control piston 50th a large pressure force acts in the closing direction. Furthermore increases with closed second control valve 70 of Pressure in the pump working chamber 22 and thus also in the other Pressure chamber 54, so that over the pressure surface 53 a increased force in the closing direction on the Injection valve member 28 is generated. Since now on the Injection valve member 28 acting in the opening direction 29 Force is less than the sum of the force of the closing spring 44, the pressure force on the control piston 50 and the Pressure force on the pressure surface 53 closes the Fuel injection valve 12.
- the pilot injection corresponds a designated in Figure 4 with I injection phase.
- the one in FIG 4 corresponds to II designated injection phase
- the second control valve 70 by the controller 72nd opened, so that the pressure in the control pressure chamber 52 decreases.
- the Fuel injection valve 12 then opens as a result of reduced pressure force on the control piston 50 and the Injector member 28 moves above its maximum Opening stroke.
- the Pressure surface 53 at the transition between the Bore sections 148 and 248 formed annular shoulder for Plant come.
- the injection valve member 28 may also another stroke stop to limit this Opening movement to be provided.
- the first Control valve 68 by the controller 72 in his opened switch position, so that the Pump working space 22 connected to the discharge chamber 24 is and on the injection valve member 28 in the opening direction 29 only a small pressure force acts and that Fuel injection valve 12 due to the force of Closing spring 44, by the control pressure in the space 52nd prevailing residual pressure on the control piston 50 generated Force and by the in the further pressure chamber 54 on the Pressure surface 53 generated force closes.
- the second Control valve 70 may terminate the Main injection in its open or closed Position.
- Fuel injection device can be additionally provided be that the flow area from the control pressure chamber 52 to the discharge chamber 24 by the control piston 50 dependent is variably controlled by its stroke.
- the Control piston 50 is doing in a stroke position accordingly the closed position of the injection valve member 28 a large flow area released and in one Lift position corresponding to the open position of the Injection valve member 28 a small flow area Approved.
Description
Claims (6)
- Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine mit einer Kraftstoffhochdruckpumpe (10) und einem mit dieser verbundenen Kraftstoffeinspritzventil (12) für jeden Zylinder der Brennkraftmaschine, wobei die Kraftstoffhochdruckpumpe (10) einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) aufweist, der einen Pumpenarbeitsraum (22) begrenzt, dem Kraftstoff aus einem Kraftstoffvorratsbehälter (24) zugeführt wird, wobei das Kraftstoffeinspritzventil (12) einen mit dem Pumpenarbeitsraum (22) verbundenen Druckraum (40) und ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird, das von dem im Druckraum (40) herrschenden Druck beaufschlagt gegen eine Schließkraft in einer Öffnungsrichtung (29) zur Freigabe der wenigstens einen Einspritzöffnung (32) bewegbar ist, mit einem ersten Steuerventil (68), durch das eine Verbindung (66) des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert wird und mit einem zweiten Steuerventil (70), durch das eine Verbindung (64) eines Steuerdruckraums (52) mit einem Entlastungsraum (24) gesteuert wird, wobei der Steuerdruckraum (52) durch einen Steuerkolben (50) begrenzt wird, der vom im Steuerdruckraum (52) herrschenden Druck beaufschlagt in einer Schließrichtung auf das Einspritzventilglied (28) wirkt und der zusammen mit dem Einspritzventilglied (28) bewegbar ist, wobei der Steuerdruckraum (52) eine Verbindung (62) mit dem Pumpenarbeitsraum (22) aufweist, dadurch gekennzeichnet, daß in den Verbindungen (62,64) des Steuerdruckraums (52) mit dem Pumpenarbeitsraum (22) und mit dem Entlastungsraum (24) jeweils eine Drosselstelle (63,65) vorgesehen ist, daß ein weiterer Druckraum (54) vorgesehen ist, der mit dem Pumpenarbeitsraum (22) verbunden ist und der durch eine Druckfläche (53) begrenzt wird, über die eine weitere Kraft in Schließrichtung auf das Einspritzventilglied (28) erzeugt wird.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckfläche (53) an einem den Steuerkolben (50) umgebenden separaten Kolben (55) als ringförmige Fläche ausgebildet ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Druckfläche (53) am Steuerkolben (50) ausgebildet ist, der im Querschnitt gestuft ausgebildet ist, daß der Steuerkolben (50) mit der Stirnfläche eines Bereichs (250) mit kleinem Querschnitt den Steuerdruckraum (52) begrenzt und daß die Druckfläche (53) an einem im Querschnitt großen Bereich (150) des Steuerkolbens (50) am Übergang zum Bereich (250) mit kleinem Querschnitt als ringförmige Fläche ausgebildet ist.
- Kraftstoffeinspritzeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der weitere Druckraum (54) mit dem Pumpenarbeitsraum (22) direkt unter Umgehung der Drosselstelle (63) der Verbindung (62) des Steuerdruckraums (52) mit dem Pumpenarbeitsraum (22) verbunden ist.
- Kraftstoffeinspritzeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Steuerdruckraum (52) über den weiteren Druckraum (54) mit dem Pumpenarbeitsraum (22) verbunden ist und daß die Drosselstelle (163) in der Verbindung (162) zwischen dem Steuerdruckraum (52) und dem weiteren Druckraum (54) angeordnet ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Verbindung (162) des Steuerdruckraums (52) mit dem weiteren Druckraum (54) über wenigstens einen Kanal im Steuerkolben (50) erfolgt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10205750 | 2002-02-12 | ||
DE10205750A DE10205750A1 (de) | 2002-02-12 | 2002-02-12 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
PCT/DE2002/004480 WO2003069154A1 (de) | 2002-02-12 | 2002-12-06 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1476655A1 EP1476655A1 (de) | 2004-11-17 |
EP1476655B1 true EP1476655B1 (de) | 2005-06-15 |
Family
ID=27618562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02792635A Expired - Lifetime EP1476655B1 (de) | 2002-02-12 | 2002-12-06 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7025284B2 (de) |
EP (1) | EP1476655B1 (de) |
JP (1) | JP2005517859A (de) |
DE (2) | DE10205750A1 (de) |
WO (1) | WO2003069154A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502006008648D1 (de) * | 2005-10-25 | 2011-02-17 | Crt Common Rail Technologies Ag | Injektor für eine Kraftstoffeinspritzanlage sowie Kraftstoffeinspritzanlage mit einem solchen Injektor |
FI123513B (fi) * | 2010-12-02 | 2013-06-14 | Waertsilae Finland Oy | Polttoaineen syöttöyksikkö, menetelmä sen käyttämiseksi ja polttomoottori |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1335128A2 (de) * | 2002-02-08 | 2003-08-13 | Robert Bosch Gmbh | Ventil zur Steuerung einer Verbindung in einem Hochdruckflüssigkeitssystem, insbesondere einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
EP1335126A1 (de) * | 2002-02-12 | 2003-08-13 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9616521D0 (en) | 1996-08-06 | 1996-09-25 | Lucas Ind Plc | Injector |
GB9820237D0 (en) * | 1998-09-18 | 1998-11-11 | Lucas Ind Plc | Fuel injector |
DE10031576C2 (de) * | 2000-06-29 | 2002-07-11 | Bosch Gmbh Robert | Druckgesteuerter Injektor zum Einspritzen von Kraftstoff |
JP2002039031A (ja) * | 2000-07-10 | 2002-02-06 | Robert Bosch Gmbh | 後置された圧力制御エレメントを備えた、燃料を噴射するためのインジェクタ |
DE10109610A1 (de) | 2001-02-28 | 2002-09-05 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
SE523482C2 (sv) | 2001-03-02 | 2004-04-20 | Volvo Lastvagnar Ab | Dieselmotor med katalysator |
DE10123995A1 (de) * | 2001-05-17 | 2002-11-21 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10123993A1 (de) * | 2001-05-17 | 2002-11-21 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10158659A1 (de) * | 2001-11-30 | 2003-06-12 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
-
2002
- 2002-02-12 DE DE10205750A patent/DE10205750A1/de not_active Withdrawn
- 2002-12-06 EP EP02792635A patent/EP1476655B1/de not_active Expired - Lifetime
- 2002-12-06 DE DE50203434T patent/DE50203434D1/de not_active Expired - Lifetime
- 2002-12-06 US US10/474,754 patent/US7025284B2/en not_active Expired - Fee Related
- 2002-12-06 WO PCT/DE2002/004480 patent/WO2003069154A1/de active IP Right Grant
- 2002-12-06 JP JP2003568246A patent/JP2005517859A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1335128A2 (de) * | 2002-02-08 | 2003-08-13 | Robert Bosch Gmbh | Ventil zur Steuerung einer Verbindung in einem Hochdruckflüssigkeitssystem, insbesondere einer Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
EP1335126A1 (de) * | 2002-02-12 | 2003-08-13 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
WO2003069154A1 (de) | 2003-08-21 |
DE10205750A1 (de) | 2003-08-21 |
US20040144365A1 (en) | 2004-07-29 |
JP2005517859A (ja) | 2005-06-16 |
US7025284B2 (en) | 2006-04-11 |
EP1476655A1 (de) | 2004-11-17 |
DE50203434D1 (de) | 2005-07-21 |
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