EP1478840A1 - Kraftstoffeinspritzventil f r brennkraftmaschinen - Google Patents
Kraftstoffeinspritzventil f r brennkraftmaschinenInfo
- Publication number
- EP1478840A1 EP1478840A1 EP03704252A EP03704252A EP1478840A1 EP 1478840 A1 EP1478840 A1 EP 1478840A1 EP 03704252 A EP03704252 A EP 03704252A EP 03704252 A EP03704252 A EP 03704252A EP 1478840 A1 EP1478840 A1 EP 1478840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- valve
- chamber
- control
- fuel
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 78
- 239000007924 injection Substances 0.000 title claims abstract description 78
- 239000000446 fuel Substances 0.000 title claims abstract description 55
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 description 10
- 230000004913 activation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- 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
- 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
- F02M45/086—Having more than one injection-valve controlling discharge orifices
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements
-
- 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
- F02M2200/46—Valves, e.g. injectors, with concentric valve bodies
-
- 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
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
Definitions
- the invention is based on a fuel injection valve for internal combustion engines according to the preamble of claim 1.
- a fuel injection valve for example from the published patent application DE 41 15 477 AI.
- An outer valve needle and an inner valve needle guided therein are located in a housing. Both valve needles cooperate with their end on the combustion chamber side with a valve seat surface in which two rows of injection openings are formed.
- the outer row of injection openings is controlled by the outer valve needle, the inner row of injection openings accordingly by the inner valve needle.
- fuel under high pressure is fed to the injection openings, which fuel exits through the injection openings under the control of the valve needles and is injected from there into the combustion chamber of the internal combustion engine.
- a control chamber is formed in the housing of the fuel injection valve, the pressure of which acts on the end face of a pressure piston which is connected to the inner valve needle.
- the pressure in the control chamber results in a closing force on the inner valve needle, which holds it in contact with the valve seat surface.
- the control room can over a control valve can be connected to the injection pressure or relieved into a leakage oil chamber, so that the pressure in the control chamber can be controlled in this way.
- the opening force on the inner or outer valve needle is generated by the application of fuel pressure to a pressure surface formed on the valve needles, the pressure at which the valve needles open being referred to as the opening pressure.
- the known fuel injection valve has the disadvantage that the closing force on the outer valve needle is not generated hydraulically, but rather via a firmly pre-tensioned closing spring. Therefore, the opening pressure of the outer valve needle cannot be regulated, and it can only be injected through the outer row of injection openings with a minimum pressure that corresponds to the opening pressure of the outer valve needle.
- the prior art has the disadvantage that the control valve, which regulates the pressure in the control chamber, is designed as a 3/2-way valve with a slide seat, so that it is relatively complicated and therefore expensive to manufacture. It is therefore not possible in the known fuel injection valve to control the injection cross section as desired.
- the fuel injection valve according to the invention with the characterizing features of patent claim 1 has the advantage over the fact that both the inner and the outer valve needle can be controlled via only one control valve.
- a control chamber is formed in the housing, which is connected to the high-pressure duct and also to a control pressure chamber. The pressure in the control chamber exerts a closing force on the outer valve needle, at least indirectly.
- a control valve is formed in the housing, through which the control chamber can be connected to a leakage oil chamber, so that the pressure in the control room and, because of the connection to the control room, also in the control pressure room via the control valve can be reduced significantly below the injection pressure, so that the closing force on the inner or outer valve needle can be controlled.
- control valve has a valve chamber connected to the control chamber and a valve member which is controlled by an actuator.
- the actuator is advantageously designed as an electrical actuator and in this case in particular as a piezo actuator. This allows the valve member to be precisely controlled and the valve member to be moved directly to the desired position.
- valve member interacts with a first valve seat in a first switching position and with a second valve seat in a second switching position, the valve chamber being sealed against the leakage oil chamber in the first switching position and connected to the leakage oil chamber in the second switching position.
- valve chamber of the control valve can be connected to the high-pressure channel via a connecting channel, the valve member closing the connecting channel when it is in contact with the second valve seat.
- the connecting channel becomes ineffective and does not interfere with the further function of the pressure control in the control room.
- the high pressure channel is released, and fuel can flow with the injection pressure into the valve chamber and from there into the control chamber.
- a high pressure is built up very quickly in the control chamber after the end of the injection, so that there is a strong closing force on the outer valve needle and thus also on the inner valve needle.
- an outer pressure piston is arranged in the housing, which is connected to the outer valve needle and the end face of which delimits the control chamber.
- a hydraulic force results from the pressure in the control chamber on the end face of the outer pressure piston, so that a closing force is exerted on the outer valve needle.
- the outer pressure piston comes to bear against a wall of the control chamber during the opening stroke movement of the outer valve needle, so that the connection of the control chamber to the high-pressure channel is interrupted.
- control pressure chamber is formed in the outer pressure piston and is connected to the control chamber by a bore in the outer pressure piston.
- This design allows direct control of the inner valve needle, which is located in the outer valve needle, and also results in a very space-saving design.
- the pressure in the leakage oil chamber is significantly lower than the injection pressure, preferably atmospheric pressure. The lower the pressure in the oil leakage chamber, the greater the pressure differences compared to the injection pressure, so that correspondingly larger forces on the inner or outer valve needle can be realized and thus shorter switching times.
- FIG. 1 shows a longitudinal section through a fuel injection valve according to the invention in its essential area
- FIG. 2 shows an enlargement of FIG. 1 in the region of the end of the injection valve on the combustion chamber side, this section being designated II in FIG. 1,
- Figure 3 is an enlargement of Figure 1 in the area designated III and
- FIG. 1 shows a longitudinal section through a fuel injection valve according to the invention.
- the fuel injection valve has a housing 1, which comprises a valve body 3, an intermediate body 7, an intermediate disk 9, a control body 12 and a holding body 14, these components each abutting one another in the order listed. All these parts of the housing 1 are here pressed together by a clamping nut 5 with their contact surfaces.
- a high-pressure channel 10 is formed, which is connected at one end to a high-pressure fuel source, not shown in the drawing, and extends through the holding body 14, the control body 12, the intermediate disk 9 and the intermediate body 7 into the valve body 3.
- the high-pressure channel 10 opens into a pressure chamber 26, which is designed as a radial extension of a bore 16 formed in the valve body 3.
- the bore 16 is closed at its end on the combustion chamber side by a seat surface 24, injection openings 30 being formed in the seat surface 24, which connect the bore 16 to the combustion chamber of the internal combustion engine.
- a piston-shaped, outer valve needle 20 is arranged in the bore 16 and is sealingly guided in a section of the bore 16 facing away from the combustion chamber. Starting from the guided section, the outer valve needle 20 tapers towards the combustion chamber to form a pressure shoulder 27 and merges at its end on the combustion chamber side into a valve sealing surface 32 with which it rests on the seat surface 24 in the closed position.
- An annular channel 28 is formed between the outer valve needle 20 and the wall of the bore 16, which connects the pressure chamber 26 to the seat surface 24, the pressure shoulder 27 being arranged at the level of the pressure chamber 26.
- the outer valve needle 20 closes the injection openings 30 against the fuel in the annular channel 28, so that fuel can flow to the injection openings 30 only when the outer valve needle 20 is lifted off the seat surface 24.
- the outer valve needle 20 is designed as a hollow needle and has a longitudinal bore 21.
- an inner valve needle 22 is arranged to be longitudinally displaceable, and its end on the combustion chamber side also comes into contact with the seat surface 24 in the closed position.
- FIG. 2 shows an enlargement of the section of FIG. 1 designated II, that is to say the area of the seat surface 24.
- the Spray openings 30 in the seat surface 24 are grouped in an outer row of injection openings 130 and an inner row of injection openings 230.
- the outer valve needle 20 has at its combustion chamber end a conical valve sealing surface 32 which has a larger opening angle than the likewise conical seat surface 24.
- sealing edge 34 On the outer edge of the sealing surface 32, which in the closed position of the outer valve needle 20 the seat 24 comes to rest.
- the sealing edge 34 is arranged upstream of the outer row of injection openings 130, so that when the sealing edge 34 is in contact with the seat surface 24, the injection openings of the outer row of injection openings 130 are sealed against the annular channel 28.
- a conical pressure surface 36 is formed at the end of the inner valve needle 22 on the combustion chamber side, which in turn borders on a likewise conical conical surface 38 which forms the end of the inner valve needle 22.
- a sealing edge 37 is formed, which comes into contact with the seat surface 24 in the closed position of the inner valve needle 22.
- the sealing edge 37 is positioned between the outer row of injection openings 130 and the inner row of injection openings 230, so that when the inner valve needle 22 is seated on the seat surface 24, only the inner row of injection openings 230 is sealed against the annular space 28, but not the outer row of injection openings 130.
- FIG. 3 shows an enlargement of FIG. 1 in the section designated III, that is to say in the area of the intermediate body 7, the intermediate disk 9 and the control body 12.
- a piston bore 45 is formed in the intermediate body 7, in which a pressure piston 40 is arranged, with its end facing the combustion chamber the outer valve needle 20 abuts.
- a radial expansion of the piston bore 45 forms a spring chamber 43, in which between an abutment surface 41 of the spring chamber 43 and an annular surface 39 of the outer pressure piston 40, a closing spring 44 is arranged under pressure, which surrounds the outer pressure piston 40 over part of its length.
- a guide bore 47 is formed in the longitudinal direction, in which an inner pressure piston 42 is guided which rests with its combustion chamber end on the inner valve needle 22.
- the inner pressure piston 42 is longitudinally displaceable in the outer pressure piston 40 and moves synchronously with the inner valve needle 22.
- a control chamber 50 is delimited by the piston bore 45, the end face 51 of the outer pressure piston 40 facing away from the combustion chamber, and the intermediate disk 9, which is connected via a connecting bore 55 formed in the outer pressure piston 40 to a control pressure chamber 52 which is guided by the guide bore 47 and the end face 53 facing away from the combustion chamber of the inner pressure piston 42 is limited.
- the control chamber 50 is connected to the high-pressure duct 10 via an inlet throttle 70 and via an outlet throttle 72 to a valve chamber 68 formed in the control body 12.
- a valve member 60 is arranged in the valve chamber 68, which is essentially hemispherical and forms a control valve 58.
- the flattened side faces the intermediate disk 9, while the hemispherical side of the valve member 60 is connected to a pressure piece 48, which is guided in a receiving body 13 arranged in the holding body 14.
- the pressure piece 48 is in this case longitudinally displaceable by an actuator 46 and thereby also moves the valve member 60 in the valve chamber 68, the actuator being embodied here, for example, as a piezo actuator.
- the pressure piece 48 is surrounded by a leak oil chamber 78 which, because of its connection to a leak oil system, not shown in the drawing, always has a low pressure.
- the intermediate disk 9 facing away is tilraum 68 a first valve seat 62 is formed, on which the valve member 60 with its spherical valve sealing surface 66 can come to rest.
- a second valve seat 64 is formed in the valve chamber 68, on which the flattened side of the valve member 60 can come to rest.
- a connecting channel 74 is closed, which also opens into the valve chamber 68 and is connected to the high-pressure channel 10 via a transverse channel 76.
- Figure 4 shows a cross section through Figure 3 along the line IV-IV. The course of the transverse channel 76 as a semicircular groove on the contact surface of the intermediate disk 9 facing the intermediate body 7 becomes clear here.
- the inlet throttle 70, the outlet throttle 72, the connecting duct 74 and the high-pressure duct 10 are also clearly visible in the cross section shown there.
- the function of the fuel injector is as follows: At the beginning of the injection cycle, the fuel injector is in the closed position, ie both the outer valve needle 20 and the inner valve needle 22 are in contact with the seat surface 24 and close both the inner row of injection openings 230 and the outer row of injection openings 130. Since the valve member 60 rests on the first valve seat 62, both the control chamber 50 and the control pressure chamber 52 are connected to the high-pressure duct 10 via the inlet throttle 70, so that the high fuel pressure of the high-pressure duct 10 prevails in both the control chamber 50 and the control pressure chamber 52 that corresponds to the injection pressure.
- the end face 51 of the outer pressure piston 40 has a larger hydraulically effective area than the pressure shoulder 27 of the outer valve needle 20, so that the outer valve needle 20 remains in the closed position.
- the force of the closing spring 44 only plays a minor role here; the closing spring 44 mainly serves to hold the outer valve needle 20 in the closed position when the internal combustion engine is not working.
- the pressure in the high-pressure duct 10 also prevails in the valve chamber 68 due to the connection via the connecting duct 74 and also via the outlet throttle 72.
- the leak oil chamber 78 has a low pressure, which generally corresponds approximately to atmospheric pressure.
- the actuator 46 is actuated and the valve member 60 moves together with the pressure piece 48 away from the first valve seat 62 to the second valve seat 64.
- the valve chamber 68 is connected to the leakage oil chamber 78, so that the valve chamber 68 and the control chamber 50 can be relieved of pressure via the outlet throttle 72.
- the connecting channel 74 is closed, so that no more fuel can flow into the valve chamber 68 via the transverse channel 76.
- the inlet throttle 70 and the outlet throttle 72 are dimensioned in such a way that the pressure in the control chamber 50 drops, but not to the level of the leakage oil chamber 78.
- the pressure in the control chamber 50 drops, causing the hydraulic force to decrease on the end face 51 of the outer one Pressure piston 40 so that the hydraulic force on the pressure shoulder 27 now predominates.
- the outer valve needle 20 then lifts off the seat surface 24 and fuel flows from the annular space 28 to the outer row of injection openings 130 and is injected from there into the combustion chamber of the internal combustion engine.
- the pressure surface 36 of the inner valve needle 22 is now acted upon by the fuel, but this force is not sufficient to overcome the hydraulic force on the end face 53 of the inner pressure piston 42, since the pressure in the control chamber 50 is still therefor is too high.
- the outer valve needle 20 or the outer pressure piston 40 move away from the combustion chamber until the end face 51 of the outer pressure piston 40 comes into contact with the intermediate disk 9.
- valve member 60 If it is intended, for example for a pilot injection, to inject fuel into the combustion chamber of the internal combustion engine only through the outer row of injection openings 130, the valve member 60 must be moved again at this time by actuating the actuator 46, so that the connection of the valve chamber 68 to the leakage oil chamber 78 is interrupted. As a result, the connection of the high-pressure channel 10 via the connecting channel 74 to the valve chamber 68 is restored, so that fuel with injection pressure flows from the high-pressure channel 10 via the outlet throttle 72 and via the inlet throttle 70 into the control chamber 50. A high fuel pressure level builds up again there, which pushes the outer pressure piston 40 and thus also the outer valve needle 20 back into the closed position.
- valve member 60 remains in contact with the second valve seat 64.
- the inlet throttle 70 is closed by the end face 51 of the outer pressure piston 40 resting on the intermediate disk 9.
- the pressure in the control pressure chamber 52 can thus continue to drop via the outlet throttle 72 and the connection of the valve chamber 68 to the leakage oil chamber 78 until the hydraulic force on the pressure surface 36 of the inner valve needle 22 is greater than the hydraulic force on the end face 53 of the inner pressure piston 42.
- the inner valve needle 22 now lifts off from the seat surface 24 with the sealing edge 37, and fuel is additionally injected through the inner row of injection openings 230.
- the injection is also ended here by actuating the actuator 46 so that the valve member 60 moves back into contact with the first valve seat 62.
- high fuel pressure is now conducted into the control chamber 50 and, via the connecting bore 55, also into the control pressure chamber 52.
- both the inner valve needle 22 and outer valve needle 20 the injection openings 30 again against the annular channel 28.
- selective opening can also be achieved by a central position of the control valve 58.
- the valve member 60 is moved by means of the piezo actuator 48 into a central position between the first valve seat 62 and the second valve seat 64, so that all connections to the valve chamber 68 are open.
- fuel flows from the valve chamber 68 into the leak oil chamber 78 on the one hand, and constantly into the valve chamber 68 via the connecting channel 74, so that only a certain pressure drop occurs in the valve chamber 68, which is still significantly above the pressure of the leak oil chamber 78.
- This pressure is sufficient to hold the inner valve needle 22 in its closed position, but the closing force on the outer valve needle 20 is reduced to such an extent that it opens.
- the injection is ended here again in the manner already described above by switching the control valve 58.
- the actuator 46 is preferably a piezo actuator.
- the valve member 60 in the valve chamber 68 requires only a small stroke for its function, as can generally be applied by a piezo actuator. If necessary, a hydraulic translator can be provided, with which larger strokes can be implemented and which is sufficiently known from the prior art.
- piezo actuators have the advantage that they can switch extremely quickly. It is thus possible without problems in the manner described above to carry out a precise pre-injection only through the outer row of injection openings 130.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10205970 | 2002-02-14 | ||
| DE10205970A DE10205970A1 (de) | 2002-02-14 | 2002-02-14 | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| PCT/DE2003/000210 WO2003069151A1 (de) | 2002-02-14 | 2003-01-27 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1478840A1 true EP1478840A1 (de) | 2004-11-24 |
| EP1478840B1 EP1478840B1 (de) | 2009-12-30 |
Family
ID=27674611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03704252A Expired - Lifetime EP1478840B1 (de) | 2002-02-14 | 2003-01-27 | Kraftstoffeinspritzventil für brennkraftmaschinen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7051958B2 (de) |
| EP (1) | EP1478840B1 (de) |
| JP (1) | JP2005517858A (de) |
| KR (1) | KR20040091522A (de) |
| CN (1) | CN100366889C (de) |
| AT (1) | ATE453798T1 (de) |
| DE (2) | DE10205970A1 (de) |
| PL (1) | PL201040B1 (de) |
| WO (1) | WO2003069151A1 (de) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10222196A1 (de) * | 2002-05-18 | 2003-11-27 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE10304605A1 (de) * | 2003-02-05 | 2004-08-19 | Robert Bosch Gmbh | Kraftstoffeinspritzventil mit zwei koaxialen Ventilnadeln |
| DE10338768A1 (de) * | 2003-08-25 | 2005-03-24 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE10343998A1 (de) * | 2003-09-23 | 2005-04-14 | Robert Bosch Gmbh | Einspritzdüse |
| DE10348925A1 (de) * | 2003-10-18 | 2005-05-12 | Bosch Gmbh Robert | Kraftstoffinjektor mit mehrteiligem, direktgesteuertem Einspritzventilglied |
| DE10355806A1 (de) * | 2003-11-28 | 2005-06-23 | Robert Bosch Gmbh | Einspritzdüse |
| DE10357769B4 (de) * | 2003-12-10 | 2007-06-21 | Siemens Ag | Kraftstoffeinspritzventil |
| DE10357873A1 (de) * | 2003-12-11 | 2005-07-07 | Robert Bosch Gmbh | Einspritzventil |
| DE102004002082A1 (de) | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Einspritzventil |
| EP1559904B1 (de) * | 2004-01-28 | 2007-03-07 | Siemens VDO Automotive S.p.A. | Ventilkörper, Fluidinjektor und Herstellungsmethode für einen Ventilkörper |
| DE102004010760A1 (de) * | 2004-03-05 | 2005-09-22 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit Nadelhubdämpfung |
| DE102004011095A1 (de) * | 2004-03-06 | 2005-09-22 | Robert Bosch Gmbh | Kraftstoffeinspritzventil |
| DE102004015360A1 (de) | 2004-03-30 | 2005-10-20 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE102004017305A1 (de) | 2004-04-08 | 2005-10-27 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit direkt ansteuerbaren Düsennadeln |
| DE102004051756A1 (de) * | 2004-10-23 | 2006-04-27 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE102004061800A1 (de) * | 2004-12-22 | 2006-07-06 | Robert Bosch Gmbh | Injektor eines Kraftstoffeinspritzsystems einer Brennkraftmaschine |
| CN100385109C (zh) * | 2005-01-18 | 2008-04-30 | 侯德洋 | 微位移变截面均匀细雾化复合式喷油器 |
| DE102005014180A1 (de) * | 2005-03-29 | 2006-10-05 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
| EP1717435B1 (de) * | 2005-04-28 | 2009-08-12 | Delphi Technologies, Inc. | Einspritzdüse |
| ATE439515T1 (de) * | 2005-04-28 | 2009-08-15 | Delphi Tech Inc | Einspritzdüse |
| DE102005020832A1 (de) * | 2005-05-04 | 2006-11-09 | Robert Bosch Gmbh | Kraftstoffeinspritzdüse |
| JP4475250B2 (ja) * | 2005-06-06 | 2010-06-09 | 株式会社デンソー | 燃料噴射弁およびその製造方法 |
| DE102005027853A1 (de) * | 2005-06-16 | 2006-12-21 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| JP4535037B2 (ja) * | 2006-02-08 | 2010-09-01 | 株式会社デンソー | インジェクタおよび燃料噴射装置 |
| DE102006009069A1 (de) * | 2006-02-28 | 2007-08-30 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
| DE102008001330A1 (de) * | 2008-04-23 | 2009-10-29 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| JP5195602B2 (ja) * | 2009-04-14 | 2013-05-08 | 株式会社デンソー | 燃料噴射弁 |
| DE102009028979A1 (de) * | 2009-08-28 | 2011-03-03 | Robert Bosch Gmbh | Kraftstoffinjektor für eine Brennkraftmaschine |
| JP5375762B2 (ja) * | 2010-07-14 | 2013-12-25 | 株式会社デンソー | 燃料噴射装置 |
| FI20115418A0 (fi) * | 2011-05-03 | 2011-05-03 | Waertsilae Finland Oy | Polttoaineenruiskutusyksikkö ja-järjestelmä |
| EP2674608B1 (de) * | 2012-06-13 | 2015-08-12 | Delphi International Operations Luxembourg S.à r.l. | Kraftstoffeinspritzdüse |
| DE102013206383A1 (de) * | 2013-04-11 | 2014-10-16 | Robert Bosch Gmbh | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| GB201309122D0 (en) | 2013-05-21 | 2013-07-03 | Delphi Tech Holding Sarl | Fuel Injector |
| CN103410642A (zh) * | 2013-07-02 | 2013-11-27 | 中国兵器工业集团第七0研究所 | 一种高压共轨喷油器喷油规律控制体 |
| CN103603757B (zh) * | 2013-12-10 | 2015-12-16 | 广西壮族自治区汽车拖拉机研究所 | 电磁驱动的无背压电控柴油喷油器 |
| DE102014215450B4 (de) | 2014-08-05 | 2016-03-31 | Engineering Center Steyr Gmbh & Co. Kg | Fluid-Einspritzvorrichtung |
| CN104196665B (zh) * | 2014-08-29 | 2017-06-23 | 龙口龙泵燃油喷射有限公司 | 一种高压共轨喷油器 |
| DE102016225776A1 (de) | 2016-12-21 | 2018-06-21 | Robert Bosch Gmbh | Ventil zum Zumessen eines Fluids |
| CN108547717B (zh) * | 2018-02-08 | 2020-09-29 | 龙口龙泵燃油喷射有限公司 | 电控柴油喷射器 |
| CN111075624B (zh) * | 2019-12-20 | 2021-04-09 | 一汽解放汽车有限公司 | 喷油装置 |
| DE102020007299B4 (de) * | 2020-11-30 | 2022-10-20 | Daimler Truck AG | lnjektor zum Einbringen, insbesondere zum direkten Einblasen, von gasförmigem Kraftstoff in einen Brennraum einer Verbrennungskraftmaschine, sowie Gasmotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4115477C2 (de) | 1990-05-17 | 2003-02-06 | Avl Verbrennungskraft Messtech | Einspritzdüse für eine Brennkraftmaschine |
| GB9709678D0 (en) * | 1997-05-14 | 1997-07-02 | Lucas Ind Plc | Fuel injector |
| AT2164U3 (de) * | 1997-08-07 | 1999-02-25 | Avl List Gmbh | Einspritzdüse für eine direkt einspritzende brennkraftmaschine |
| EP0978649B1 (de) * | 1998-08-06 | 2004-05-12 | Siemens Aktiengesellschaft | Kraftstoffeinspritzdüse |
| EP1338788B1 (de) * | 1999-04-01 | 2005-05-18 | Delphi Technologies, Inc. | Brennstoffeinspritzventil |
| GB9916464D0 (en) * | 1999-07-14 | 1999-09-15 | Lucas Ind Plc | Fuel injector |
| AT3763U3 (de) * | 1999-08-05 | 2000-12-27 | Avl List Gmbh | Nockenbetätigte einspritzeinrichtung für eine brennkraftmaschine |
| DE19949528A1 (de) * | 1999-10-14 | 2001-04-19 | Bosch Gmbh Robert | Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit hydraulischer Verstärkung des Aktors |
| ATE353118T1 (de) * | 2000-07-18 | 2007-02-15 | Delphi Tech Inc | Kraftstoffeinspritzventil |
| US6557779B2 (en) * | 2001-03-02 | 2003-05-06 | Cummins Engine Company, Inc. | Variable spray hole fuel injector with dual actuators |
| DE10121892A1 (de) * | 2001-05-05 | 2002-11-07 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
| DE10122241A1 (de) * | 2001-05-08 | 2002-12-05 | Bosch Gmbh Robert | Kraftstoffeinspritzventil für Brennkraftmaschinen |
-
2002
- 2002-02-14 DE DE10205970A patent/DE10205970A1/de not_active Ceased
-
2003
- 2003-01-27 EP EP03704252A patent/EP1478840B1/de not_active Expired - Lifetime
- 2003-01-27 CN CNB038001438A patent/CN100366889C/zh not_active Expired - Fee Related
- 2003-01-27 US US10/474,681 patent/US7051958B2/en not_active Expired - Fee Related
- 2003-01-27 JP JP2003568243A patent/JP2005517858A/ja active Pending
- 2003-01-27 KR KR10-2003-7013406A patent/KR20040091522A/ko not_active Abandoned
- 2003-01-27 DE DE50312286T patent/DE50312286D1/de not_active Expired - Lifetime
- 2003-01-27 PL PL363037A patent/PL201040B1/pl not_active IP Right Cessation
- 2003-01-27 AT AT03704252T patent/ATE453798T1/de not_active IP Right Cessation
- 2003-01-27 WO PCT/DE2003/000210 patent/WO2003069151A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03069151A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| PL201040B1 (pl) | 2009-02-27 |
| CN100366889C (zh) | 2008-02-06 |
| ATE453798T1 (de) | 2010-01-15 |
| CN1533474A (zh) | 2004-09-29 |
| JP2005517858A (ja) | 2005-06-16 |
| US7051958B2 (en) | 2006-05-30 |
| US20040129804A1 (en) | 2004-07-08 |
| KR20040091522A (ko) | 2004-10-28 |
| WO2003069151A1 (de) | 2003-08-21 |
| EP1478840B1 (de) | 2009-12-30 |
| DE50312286D1 (de) | 2010-02-11 |
| DE10205970A1 (de) | 2003-09-04 |
| PL363037A1 (en) | 2004-11-15 |
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