EP1236885B1 - Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine - Google Patents
Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1236885B1 EP1236885B1 EP20020002432 EP02002432A EP1236885B1 EP 1236885 B1 EP1236885 B1 EP 1236885B1 EP 20020002432 EP20020002432 EP 20020002432 EP 02002432 A EP02002432 A EP 02002432A EP 1236885 B1 EP1236885 B1 EP 1236885B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control valve
- control
- valve member
- fuel injection
- space
- 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
- 238000002347 injection Methods 0.000 title claims description 58
- 239000007924 injection Substances 0.000 title claims description 58
- 239000000446 fuel Substances 0.000 title claims description 56
- 238000002485 combustion reaction Methods 0.000 title claims description 18
- 230000008878 coupling Effects 0.000 claims description 38
- 238000010168 coupling process Methods 0.000 claims description 38
- 238000005859 coupling reaction Methods 0.000 claims description 38
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000002828 fuel tank Substances 0.000 description 20
- 238000007789 sealing Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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
- 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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable 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
- 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
- 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
- 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
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
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 injector is through the EP 0 823 549 A2.
- This fuel injection device has a control valve device with two electrically controlled control valves.
- the two control valves are controlled by a single solenoid and each have a control valve member which is against a Restoring force between two switching positions is movable.
- the control valve member of a first control valve has as Part of the electromagnet on a magnet armature, passing through Energizing a solenoid coil of the electromagnet movable is.
- the control valve member of the second control valve is with the control valve member of the first control valve via a Feder coupled and is with appropriate energization of the Solenoid coil via this coupling through the control valve member the first control valve moves.
- the control valve members of Both control valves must be coaxial one behind the other be arranged, whereby the control valve means a has a large overall length.
- the fuel injection device according to the invention with the Features according to claim 1 has the advantage that the control valve members of the control valves arbitrary can be arranged to each other, so that the Control valve device flexible to different Installation conditions at the fuel injection device can be adapted.
- FIG. 1 shows a Fuel injection device with a Control valve device for an internal combustion engine in schematic representation
- Figure 2 enlarges the Control valve device according to a first Embodiment
- Figure 3 the Fuel injection device according to a second Embodiment
- Figure 4 the control valve device according to a third embodiment
- Figure 5 the Control valve device according to a third Embodiment.
- FIG 1 is a fuel injection device for a Internal combustion engine, for example, a motor vehicle shown.
- the fuel injector is as so-called pump-nozzle system or pump-line-nozzle system trained and has for each cylinder the Internal combustion engine, respectively, a fuel pump 10, a Fuel injection valve 12 and a the Fuel injection valve 12 with the fuel pump 10th connecting line 14 on.
- a pump-nozzle system are the fuel pump 10 and the fuel injection valve 12 combined to form a unit and the line 14th runs in this unit.
- the fuel pump 10 and the Fuel injector 12 arranged separately from each other and the line 14 extends for example in the form of a Piping between these components.
- the fuel pump 10 has a tightly guided in a cylinder 16 Pump piston 18, by a cam 20 a Camshaft of the internal combustion engine against the force of a Return spring 21 is driven in a lifting movement.
- a Pump piston 18 limited in the cylinder 16 a Pump working chamber 22, in which by the pump piston 18th Fuel is compressed under high pressure.
- the Pump work chamber 22 becomes fuel from a Fuel tank 24 is supplied, for example by means of a low-pressure pump, not shown.
- the fuel injection valve 12 has a valve body 26 on, which may be formed in several parts, in the one piston-shaped 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 a valve seat 26 formed in the valve body 36th cooperates, from or after the injection ports 32 dissipate.
- In the valve body 26 is between the Injector member 28 and the bore 30 to the valve seat 36th towards an annular space 38 present, by a radial Extension of the bore 30 in an injection valve member 28 surrounding pressure chamber 40 passes.
- the Injection valve member 28 has in the region of the pressure chamber 40th by a reduction in cross-section to the combustion chamber through a Pressure shoulder 42 on. 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. To the spring chamber 46 closes at the bore 30 facing away from the end in Valve body 26 a further bore 48, in which a Piston 50 is guided tightly.
- the piston 50 can with the Injection valve member 28 may be connected or the piston 50th may alternatively also on the closing spring 44 and thus indirectly supported on the injection valve member 28.
- the piston 50 limited with its spring chamber 46 facing away Front side a control pressure chamber 52 in the valve body 26. Die Line 14 opens into the pressure chamber 40th
- the fuel injector has a Control valve device 60, preferably at Fuel injection valve 12 is arranged and in Figure 2 is shown according to a first embodiment.
- the Control valve device 60 has a first electrical controlled control valve 62 and a second electrically controlled control valve 72 on.
- the first control valve 62 has a control valve member 63, which by an actuator in Form of an electromagnet 64 against a restoring force, the is generated by a return spring 65, between two Switch positions is movable.
- the solenoid 64 is controlled by an electric control device 61.
- the Control valve member 63 is in a bore 66 of a Valve body of the control valve device 60 slidably guided.
- the control valve member 63 has a through Cross-section reduction an approximately conical sealing surface 67 on, with a through a corresponding Cross-sectional enlargement of the bore 66 formed approximately conical valve seat 68 cooperates. With the Control valve member 63 is at the return spring 65th opposite end portion of a flange Magnetic armature 69 of the electromagnet 64 is connected. Of the Electromagnet 64 also has a magnet armature 69 axially opposed fixed solenoid 70 on.
- the first control valve 62 can be used as a 2/2 or 2/3-way valve be educated.
- the bore 66 is remote from the magnetic coil 70 at its End connected to a fuel-filled coupling space 71.
- the end face of the control valve member 63 forms in the Bore 66 a movable boundary of the coupling space 71st Es can be provided that the control valve member 63 with its end region protrudes from the bore 66 and in the Coupling space 71 dips.
- the return spring 65 can between a wall of the coupling space 71 and the front side of the Control valve member 63 to be clamped.
- the control valve device 60th is the first control valve 62 by the force of Return spring 65 when not energized electromagnet 64 in an opened first switching position in which the Sealing surface 67 is lifted from the valve seat 68.
- the second control valve 72 has a control valve member 73 on, in a bore 76 of a valve body of the Control valve device 60 against a restoring force slidably guided by a return spring 75th is produced.
- the control valve member 73 has a through Cross-section reduction an approximately conical sealing surface 77 on, with one by a corresponding Cross-sectional enlargement of the bore 76 formed about conical valve seat 78 cooperates.
- the the Return spring 75 facing away from the front side Control valve member 73 is the pressure in the coupling chamber 71st applied.
- the end portion of the control valve member 73 may for example, in the coupling space 71 protrude.
- the second Control valve 72 When the pressure in the Coupling space 71 is low, so is the second Control valve 72 in an open first switching position, in which the sealing surface 77 is lifted from the valve seat 78.
- the pressure in the coupling chamber 71 is sufficiently increased, so becomes the control valve member 73 of the second control valve 72 moved against the force of the return spring 75 and the second Control valve 72 in a closed second switching position switched in the control valve member 73 with its Sealing surface 77 rests against the valve seat 78.
- the second Control valve 72 is designed as a 2/2-way valve.
- the first control valve 62 in not energized State of the electromagnet 64 in a first closed Switching position is located and by energizing the Electromagnet 64 in its second closed Switched position is switched.
- the second control valve 72 in not energized state of the electromagnet 64 and thus depressurized coupling space 71 in a first closed Switching position is located and by energizing the Electromagnet 64 and thus pressure increase in the coupling space 71st is switched to its second open switching position.
- the electromagnet 64 can be deactivated with different current, wherein the control valve member 63 of the first control valve 62nd starting from a first switching position with no current Electromagnet 64 when energized with a first Current is moved to a second switching position and when energized with a second higher current in one third shift position is moved. According to be through the control valve member 63 of the first control valve 62 in Coupling space 71 two different pressure levels set. It is envisaged that the second Control valve 72 already on reaching a first Pressure levels in the coupling chamber 71 in its second switching position is switched.
- Fuel injector is through the second Control valve 72 of the control valve device 60 at least indirectly a connection of the pump working chamber 22 with controlled a discharge space, as the example of the Can serve fuel tank 24.
- the second Control valve 72 can directly connect the Pump workspace 22 or the connection of the line 14th or the connection of the pressure chamber 40 with the Fuel tank 24 are controlled. If that is second control valve 72 in its open switching position is located in the connection to the Fuel tank 24 is open, so may in Pump workspace 22, the line 14 and the pressure chamber 40th do not build up high pressure.
- the second control valve 72 in its closed switching position is switched, in the connection to the fuel tank 24 is disconnected is, so may in the pump working chamber 22, the line 14th and the pressure chamber 40 high pressure according to the profile of Build up the pump piston 18 driving cam 20.
- the first control valve 62 of the control valve device 60 By the first control valve 62 of the control valve device 60, the pressure in the control pressure chamber 52 of the Fuel injection valve 12 controlled. This is by the first control valve 62, for example, a compound of Control pressure chamber 52 at least indirectly with the Pump workspace 22 controlled. In the connection of the Control pressure space 52 with the pump working space 22 may be a Throttle 57 may be provided. The control pressure chamber 52 is while constantly at least indirectly with a discharge space connected than serve the fuel tank 24 can. In the connection between the control pressure chamber 52 and the discharge chamber 24, a further throttle point 59th be provided.
- the first control valve 62 When not energized electromagnet 64th is the first control valve 62 in a first open switch position in which the connection of the Control pressure chamber 52 with the pump working chamber 22 open is and thus in the control pressure chamber 52, the same pressure as prevails in the pump working chamber 22.
- the second control valve 72 is in non-energized electromagnet 64 in its open position, so that the pump working space 22nd is connected to the discharge space 24.
- the first control valve 62 is in a third, closed position, so that the second Control valve 72 because of the pressure increase in the coupling chamber 71 in switches its closed position.
- the first control valve 62 in a second, closed closed position switched in the the connection of the control pressure chamber 52 with the Pump work chamber 22 is open, so that in Control pressure chamber 52 builds up high pressure and that Fuel injector 12 closes.
- the second Control valve 72 remains in its closed Position, so that the pump working chamber 22 from Relief space 24 is disconnected.
- the first control valve 62 For a post-injection is the first control valve 62 again in its third, brought closed position, so that the control pressure chamber 52 is relieved of pressure again and that Fuel injection valve 12 opens. To end the Post-injection, the first control valve 62 in his first opened position and the second Control valve 72 is also in its open position brought.
- the fuel injection device according to A second embodiment shown in which the Structure of the control valve device 60 is the same as the first Embodiment is.
- the first control valve 62 becomes controlled by an electromagnet 64.
- the first Control valve 62 is at least indirectly a compound of the Pump workspace 22 with the fuel tank 24th controlled as a discharge space, being in this connection at least one throttle restriction 58 is provided.
- the second control valve 72 is different from the first Embodiment also at least indirectly one Connection of the pump working chamber 22 with the Fuel tank 24 controlled as a discharge space.
- the first control valve 62 is thus a throttled Connection of the pump working chamber 22 with the Fuel tank 24 controlled and by the second Control valve 72 is an unthrottled connection of the Pump workspace 22 with the fuel tank 24th controlled.
- the first control valve 62 in his Switch position in which the throttled connection of the Pump workspace 22 with the fuel tank 24th is opened and the second control valve 72 is located in its switching position, in which the unthrottled connection the pump working space 22 with the fuel tank 24 is open.
- the first control valve 62 in a switching position, in the throttled connection of the pump working space 22 is still open with the fuel tank 24, however, the second control valve 72 by the pressure increase in Coupling space 71 is brought into a second switching position, in the unthrottled connection of the pump workspace 22 is separated with the fuel tank 24.
- the throttled connection of the pump work space 22 with the fuel tank 24 may be in Pump work space 22 does not build up the full high pressure, so that the fuel injection with relatively low pressure starts.
- the first Control valve 62 brought into a third switching position in the with the throttled connection of the pump chamber 22 with the fuel tank 24 is separated while the second control valve 72 in its closed position remains. That when switching the first control valve 62 displaced volume in its third switching position is in Coupling space 71 compressed.
- the pump working space 22 is then completely separated from the fuel tank 24 and in Pump work chamber 22 builds up high pressure according to the 20 cam profile on and the fuel injection takes place at high pressure.
- the arrangement of the control valves 62,72 can also be reversed as described above, so that by the first control valve 62, the unthrottled Connection is controlled and through the second control valve 72 the throttled connection is controlled.
- control valve device 160 is according to a illustrated in the third embodiment, in the following essentially only those of the first embodiment deviant features are explained.
- the Control valve member 163 of the first control valve 162 controls not directly the pressure in the coupling space 171, but the control valve member 163 is via a resilient element 180 for example in the form of a spring with a control piston 182 coupled, which limits the coupling space 171.
- Of the Control piston 182 is supported by a return spring 165 in Coupling room 171 from.
- the second control valve 172 is switched.
- the second control valve 172 is the same as formed in the first embodiment.
- control valve device 260 is according to a illustrated fourth embodiment, in which below essentially only those of the first embodiment deviant features are explained.
- the Control valve member 273 of the second control valve 272 is not directly acted upon by the pressure in the coupling space 271 but a control piston 282, which has a resilient element 280, for example in the form of a spring with the Control valve member 273 is coupled. If that Control valve member 263 of the first control valve 262 through Energization of the solenoid 264 is moved so leads this is not directly related to movement of the control valve member 273 of the second control valve 272 but first to a Movement of the control piston 282, in which the spring 280 is compressed.
- the first control valve 262 is the same as formed in the first or second embodiment.
- the stiffness of the Coupling between the control valve member 163 and 263 of the first control valve 162 and 262 and the control valve member 173 and 273 of the second control valve 172 and 272 targeted can be adjusted without the volume of the coupling space 171 or 271 must be very large.
- control valve means 60,160,260 can also any other connections one Fuel injector are controlled as the above-explained connections of the pump working space 22 with the fuel tank 24 and the connection the control pressure chamber 52 with the pump working chamber 22 or the fuel tank 24th
Description
Claims (8)
- Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine mit einer Steuerventileinrichtung (60;160;260), die wenigstens zwei elektrisch gesteuerte Steuerventile (62,72;162,172;262,272) aufweist, die durch einen einzigen elektromagnetischen Aktor (64;164;264) gesteuert werden und die jeweils ein Steuerventilglied (63,73;163,173;263,273) aufweisen, das gegen eine Rückstellkraft zwischen wenigstens zwei Schaltstellungen bewegbar ist, wobei das Steuerventilglied (63;163;263) eines ersten Steuerventils (62;162;262) durch den Aktor (64;164;264) bewegbar ist und das Steuerventilglied (73;173;273) wenigstens eines zweiten Steuerventils (72;172;272) zumindest mittelbar durch das Steuerventilglied (63;163;263) des ersten Steuerventils (62;162;262) bewegbar ist, dadurch gekennzeichnet, daß durch das Steuerventilglied (63;163;263) des ersten Steuerventils (62;162;262) zumindest mittelbar ein kraftstoffgefüllter Koppelraum (71;171;271) begrenzt wird, wobei bei der Schaltbewegung des Steuerventilglieds (63;163;263) der Druck im koppelraum (71;171;271) verändert wird und daß das Steuerventilglied (73;173;273) des zweiten Steuerventils (72;172;272) zumindest mittelbar vom Druck im Koppelraum (71;171;271) beaufschlagt ist und durch die im Koppelraum (71;171;271) erfolgende Druckänderung zwischen seinen wenigstens zwei Schaltstellungen bewegbar ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerventilglieder (63,73;163,173;263,273) der Steuerventile (62,72;162,172;262,272) nebeneinander angeordnet sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Koppelraum (71;171;271) ein derart großes Volumen aufweist, daß dieses durch Komprimierung eine Schaltbewegung des Steuerventilglieds (63) des ersten Steuerventils (62) unabhängig von einer Schaltbewegung des Steuerventilglieds (73) des zweiten Steuerventils (72) ermöglicht.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Steuerventilglied (163) des ersten Steuerventils (162) über ein federndes Element (180) mit einem beweglichen Steuerkolben (182) gekoppelt ist, durch den der Koppelraum (171) begrenzt wird.
- Kraftstoffeinspritzeinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Steuerventilglied (273) des zweiten Steuerventils (272) über ein federndes Element (280) mit einem beweglichen Steuerkolben (282) gekoppelt ist, der vom Druck im Koppelraum (271) beaufschlagt ist.
- Kraftstoffeinspritzeinrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß wenigstens eines der Steuerventile (62,72;162,172;262,272) als 2/2- oder 2/3-Wegeventil ausgebildet ist.
- Kraftstoffeinspritzeinrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß diese eine Kraftstoffpumpe (10) für jeden Zylinder der Brennkraftmaschine aufweist, die einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) aufweist, der einen Pumpenarbeitsraum (22) begrenzt, welcher mit einem an der Brennkraftmaschine angeordneten Kraftstoffeinspritzventil (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird und das durch den im Pumpenarbeitsraum (22) erzeugten Druck gegen eine Schließkraft in Öffnungsrichtung (29) bewegbar ist, daß durch eines der Steuerventile (62,72;162,172;262,272) zumindest mittelbar eine Verbindung des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert wird und daß durch ein anderes der Steuerventile (62,72;162,172;262,272) der in einem Steuerdruckraum (52) des Kraftstoffeinspritzventil (12) herrschende Druck gesteuert wird, durch den das Einspritzventilglied (28) zumindest mittelbar in Schließrichtung beaufschlagt ist.
- Kraftstoffeinspritzeinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß diese eine Kraftstoffpumpe (10) für jeden Zylinder der Brennkraftmaschine aufweist, die einen durch die Brennkraftmaschine in einer Hubbewegung angetriebenen Pumpenkolben (18) aufweist, der einen Pumpenarbeitsraum (22) begrenzt, welcher mit einem an der Brennkraftmaschine angeordneten Kraftstoffeinspritzventil (12) verbunden ist, das ein Einspritzventilglied (28) aufweist, durch das wenigstens eine Einspritzöffnung (32) gesteuert wird und das durch den im Pumpenarbeitsraum (22) erzeugten Druck gegen eine Schließkraft in Öffnungsrichtung (29) bewegbar ist, daß durch eines der Steuerventile (62,72;162,172;262,272) zumindest mittelbar eine ungedrosselte Verbindung des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert wird und daß durch ein anderes der Steuerventile (62,72;162,172;262,272) zumindest mittelbar eine gedrosselte Verbindung des Pumpenarbeitsraums (22) mit einem Entlastungsraum (24) gesteuert wird.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10109612 | 2001-02-28 | ||
DE10109612 | 2001-02-28 | ||
DE10160256 | 2001-12-07 | ||
DE10160256A DE10160256A1 (de) | 2001-02-28 | 2001-12-07 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1236885A2 EP1236885A2 (de) | 2002-09-04 |
EP1236885A3 EP1236885A3 (de) | 2004-01-21 |
EP1236885B1 true EP1236885B1 (de) | 2005-03-30 |
Family
ID=26008644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020002432 Expired - Lifetime EP1236885B1 (de) | 2001-02-28 | 2002-02-01 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1236885B1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1541860B1 (de) * | 2003-12-12 | 2007-07-04 | Delphi Technologies, Inc. | Einspritzventil mit Steuerungsventil, das den Druck im Steuerungsraum steuert |
US7255091B2 (en) * | 2005-05-31 | 2007-08-14 | Caterpillar, Inc. | Fuel injector control system and method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5893516A (en) * | 1996-08-06 | 1999-04-13 | Lucas Industries Plc | Injector |
DE19742320A1 (de) * | 1997-09-25 | 1999-04-01 | Bosch Gmbh Robert | Kraftstoffeinspritzventil |
DE19837332A1 (de) * | 1998-08-18 | 2000-02-24 | Bosch Gmbh Robert | Steuereinheit zur Steuerung des Druckaufbaus in einer Pumpeneinheit |
-
2002
- 2002-02-01 EP EP20020002432 patent/EP1236885B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1236885A3 (de) | 2004-01-21 |
EP1236885A2 (de) | 2002-09-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1236884B1 (de) | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen | |
EP1316717A2 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10113654A1 (de) | Kraftsotffeinspritzeinrichtung für Brennkraftmaschinen | |
DE10205185A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1260705B1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1236885B1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1260700A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1310668B1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1472454B1 (de) | Verfahren und vorrichtung zur detektion von betriebszuständen einer pumpe-düse-einheit | |
EP1346150A1 (de) | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine | |
EP1310666A2 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10160264A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2001031191A2 (de) | Kraftstoffeinspritzventil für brennkraftmaschinen | |
DE10154802A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10205749A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE19939447A1 (de) | Einrichtung zur Einspritzung von Kraftstoff | |
EP1318293A2 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10160256A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
EP1421274A1 (de) | Kraftstoffeinspritzvorrichtung für brennkraftmaschinen | |
DE10155674A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
DE10205750A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2003027490A1 (de) | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine | |
DE10162384A1 (de) | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine | |
WO2003067074A1 (de) | Verfahren und vorrichtung zur ansteuerung eines steuerventils einer pumpe-düse-einheit | |
WO2003027481A1 (de) | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 02M 45/12 B Ipc: 7F 02M 59/36 B Ipc: 7F 02M 47/02 B Ipc: 7F 02M 59/46 B Ipc: 7F 02M 57/02 A |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
17P | Request for examination filed |
Effective date: 20040721 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB IT SE |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050330 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 50202599 Country of ref document: DE Date of ref document: 20050504 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20050718 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060201 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20060102 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060901 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060201 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20061031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050630 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060228 |