EP1813805A1 - Ensemble de compensation pour un injecteur - Google Patents
Ensemble de compensation pour un injecteur Download PDFInfo
- Publication number
- EP1813805A1 EP1813805A1 EP06001744A EP06001744A EP1813805A1 EP 1813805 A1 EP1813805 A1 EP 1813805A1 EP 06001744 A EP06001744 A EP 06001744A EP 06001744 A EP06001744 A EP 06001744A EP 1813805 A1 EP1813805 A1 EP 1813805A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compensation
- fluid
- piston
- recess
- compensation assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012530 fluid Substances 0.000 claims abstract description 163
- 239000012528 membrane Substances 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
-
- 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
- F02M61/166—Selection of particular materials
-
- 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
- F02M61/167—Means for compensating clearance or thermal expansion
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/705—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for filling or emptying hydraulic chamber, e.g. for compensating clearance or thermal expansion
- F02M2200/706—Valves for filling or emptying hydraulic chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
- F02M2200/707—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic with means for avoiding fuel contact with actuators, e.g. isolating actuators by using bellows or diaphragms
-
- 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
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/08—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series the valves opening in direction of fuel flow
Definitions
- the invention relates to a compensation assembly for an injector.
- the compensation assembly comprises a cup shaped compensation assembly body having a bottom portion and a recess.
- a piston is arranged in the recess of the cup shaped compensation assembly body movable in axial direction.
- a transferring device is arranged intermediate a piezoelectric actuator and a piston.
- the transferring device comprises at least one pressure chamber.
- the pressure chamber is sealed by a first membrane.
- the pressure chamber is connected with a compensation chamber by a throttle.
- the throttle as well is arranged in the transferring device.
- DE 102 45 109 A1 discloses an injector, especially for injecting fuel comprising a piezoelectric actuator.
- a shell of a body of the piezoelectric actuator is surrounded by a wall of a recess of an injector housing comprising a clearance fit to the wall of the recess of the injector housing. Further, the shell is cooled by a direct contact to an inert, electrically non-conductible thermally coupling fluid.
- the injector housing comprises a fluid chamber which is nearly completely filled with a fluid. The rest volume of the fluid chamber which is not filled with the fluid has at least such a size that the rest volume is able to compensate a thermal expansion of the thermally coupling fluid at the highest working temperature of the actuator body.
- the object of the invention is to create a compensation assembly for an injector which enables a precise compensation of an axial expansion of the injector in a simple way.
- the invention is distinguished concerning a first aspect of the invention by a compensation assembly for an injector.
- the compensation assembly comprises a cup shaped compensation assembly body having a bottom portion and a recess.
- a piston is arranged in the recess of the cup shaped compensation assembly body movable in axial direction.
- a first fluid chamber is bordered in axial direction by a first side of the piston and by the bottom portion of the cup shaped compensation assembly body.
- a second fluid chamber is bordered in axial direction by a first membrane and by a second side of the piston facing away from the first side of the piston.
- a fluid path extends from the first to the second fluid chamber.
- An elastic compensation device is checklessly hydraulically coupled to the second fluid chamber.
- the compensation assembly is arranged in an injector coupling an actor of the injector with a wall of the injector or with a needle of the injector, the compensation assembly enables a compensation of a thermal expansion of the injector housing relative to the actor. If a fluid in the compensation assembly expands with increasing temperature, the elastic compensation device is deformed elastically. The elastic deformation of the elastic compensation device in that way compensates the increasing need for volume of the fluid in the compensation assembly. This contributes to a precise compensation of a thermal expansion of the injector, especially of the injector housing and so contributes to a precise dosing of fluid by the injector.
- the elastic compensation device comprises a first elastic compensation element which is arranged in a compensation element recess of the piston. This enables in a simple way a checkless hydraulic coupling to the second fluid chamber without modification of the cup shaped compensation assembly body.
- the elastic compensation device comprises a second elastic compensation element being arranged in the second fluid chamber. This enables in a simple way a checkless hydraulic coupling to the second fluid chamber without modification of the compensation assembly.
- the elastic compensation device comprises a third elastic compensation element which is arranged in a compensation element recess of the cup shaped compensation assembly body. This enables in a simple way a checkless hydraulic coupling to the second fluid chamber without modification of the piston.
- the fluid path comprises a clearance fit between the piston and the wall of the recess of the cup shaped compensation assembly body. This enables in a simple way a hydraulic connection between the first and the second fluid chamber without forming a recess in the piston. If the piston in the recess of the cup shaped compensation assembly body comprises the clearance fit, this may be used for throttling the fluid while passing the space between the piston and the recess.
- the fluid path comprises a fluid recess of the piston.
- the compensation assembly comprises a first throttle and/or a first control valve and/or a first check valve being arranged in such a way that the fluid which passes the fluid recess of the piston has to pass the first throttle and/or, respectively, the first control valve and/or, respectively, the first check valve.
- the elastic compensation device and/or the first and/or the second and/or the third elastic compensation element comprise rubber and/or polychloroprene and/or silicon. This contributes to a proper elastic deformation-ability of the elastic compensation device and/or of the elastic compensation elements.
- the invention is distinguished concerning a second aspect of the invention by the compensation assembly for the injector.
- the compensation assembly comprises the cup shaped compensation assembly body having the bottom portion and the recess.
- the piston is arranged in the recess of the cup shaped compensation assembly body movable in axial direction.
- the first fluid chamber is bordered in axial direction by the first side of the piston and the first side of the bottom portion of the cup shaped compensation assembly body.
- a third fluid chamber is bordered in axial direction by a second membrane and by a second side of the bottom portion facing away from the first side of the bottom portion.
- a fluid recess of the bottom portion extends from the first to the third fluid chamber.
- a second throttle and/or a second control valve and/or a second check valve is arranged in such a way that the fluid which passes the fluid recess of the bottom portion has to pass the second throttle and/or the second control valve and/or the second check valve.
- the elastic compensation device is checklessly hydraulically coupled to the third fluid chamber. If a fluid in the compensation assembly expands with increasing temperature, the elastic compensation device is deformed elastically. The elastic deformation of the elastic compensation device in that way compensates the increasing need for volume of the fluid in the compensation assembly. This contributes to a precise compensation of a thermal expansion of the injector, especially of the injector housing and so contributes to a precise dosing of fluid by the injector.
- the compensation assembly comprises the second fluid chamber which is bordered in axial direction by the first membrane and by the second side of the piston facing away from the first side of the piston.
- the fluid path extends from the first to the second fluid chamber.
- the elastic compensation device is checklessly hydraulically coupled to the second fluid chamber. The combination of the second and the third fluid chamber may contribute to a proper compensation of the thermal expansion of the injector.
- the elastic compensation device comprises a fourth compensation element which is arranged in the third fluid chamber. This enables in a simple way a checkless hydraulic coupling to the third fluid chamber without modification of the compensation assembly.
- the elastic compensation device comprises a fifth compensation element which is arranged in a compensation element recess of the bottom portion and which is checklessly hydraulically coupled to the third fluid chamber. This enables in a simple way a checkless hydraulic coupling of the elastic compensation device and the third fluid chamber.
- the elastic compensation device and/or the first and/or the second and/or the third and/or the fourth and/or the fifth elastic compensation element comprises rubber and/or polychloroprene and/or silicon. This contributes to a proper elastic deformation-ability of the elastic compensation device and/or of the elastic compensation elements.
- An injector (figure 1) comprises an injector housing 1 and a valve group 2.
- the valve group 2 comprises a nozzle body 4 having a nozzle body recess 6, a needle 8, a spring 10, and a spring washer 12.
- the needle 8 is arranged movable in axial direction in the nozzle body recess 6.
- the spring 10 is arranged circumferential the needle 8 and in axial direction intermediate the nozzle body 4 and the spring washer 12.
- the spring 10 acts on the needle 8 via the spring washer 12 in direction away from the nozzle body 4.
- the injector is preferably suited for injecting fluid into a combustion chamber of an internal combustion engine.
- the nozzle body 4 may be made of two or more pieces.
- the actor 14 is arranged in an inner tube 15 of the injector housing 1.
- the actor 14 comprises a ground plate 16 and a top plate 18.
- the injector is arranged intermediate the spring washer 12 and a compensation device 13.
- the actor 14 acts on the needle 8 and on the spring washer 12 via the ground plate 16.
- the actor 14 acts on the compensation assembly 30 via the top plate 18.
- the compensation assembly 30 may be arranged intermediate the actor 14 and the spring washer 12 and the needle 8.
- a fluid which is in this embodiment preferably fuel, may flow from a connection 20 to the nozzle body 4 through a free volume between the inner tube 15 and the injector housing 1.
- the needle 8 and the nozzle body 4 prevent a fluid flow into the combustion chamber of the internal combustion engine.
- the closing position of the needle 8 there is a nozzle formed between a tip of the needle 8 and a tip of the nozzle body 4 facing away from the actor 14.
- the actor 14 preferably is a piezoelectric actuator. If the actor 14 gets energized, the actor 14 expands its axial length. If the actor 14 gets de-energized, the axial length decreases.
- the injector especially the injector housing 1, expands its axial length.
- the injector housing 1 which is preferably made of stainless steel, expands more with the temperature than the actor 14.
- the compensation device 30 is arranged in order to compensate that thermal expansion of the injector housing 1.
- the compensation assembly 30 comprises a cup shaped compensation assembly body 32 having a recess 33 and a bottom portion 34 (figure 2).
- the cup shaped compensation assembly body 32 is sealed by a first membrane 35.
- a piston 36 is arranged movable in axial direction in the recess 33 of the cup shaped compensation assembly body 32.
- the piston 36 comprises a piston head 40 and, preferably, a piston rod 38. In case, the piston rod 38 protrudes through a recess of the first membrane 35.
- the piston head 40 separates the recess 33 of the cup shaped compensation assembly body 32 in a first fluid chamber 44 and a second fluid chamber 46.
- the piston head 40 comprises a clearance fit to the wall of the recess 33.
- the clearance fit preferably is formed in such a way that a fluid in the first or the second fluid chamber 44, 46 may flow to the second or, respectively, the first fluid chamber 46, 44.
- the fluid flow from the first to the second fluid chamber 44, 46 or vice versa in that way may be throttled by the clearance fit.
- the first and the second fluid chamber 44, 46 are filled with fluid, preferably oil.
- the fluid in the first and the second fluid chamber 44, 46 is pressurized.
- the fluid may be pressurized by a compensation assembly spring which is arranged in such a way that the compensation assembly spring acts on the first membrane 35.
- the first side 37 of the piston 36 has a larger surface than the second side 39 of the piston 39 because of the piston rod 38. The pressure acting on the larger surface of the first side 37 of the piston 36 causes a bigger force on the piston 36 then the pressure acting on the second side 39 of the piston 36.
- the compensation assembly 30 is arranged in the injector, it is arranged in such a way that the compensation assembly 30 is preloaded. So, the actor 14 never loses contact to the piston rod 38. If the injector housing 1 expands with the changing temperature, the force on the piston 36 is decreasing. The fluid presses the piston 36 away from the bottom portion 34. So the thermal expansion of the injector housing 1 is compensated.
- the actor 14 may expand in a few microseconds. This duration is too short for the fluid to pass the clearance fit between the piston 36 and the recess 33 of the cup shaped compensation assembly body 32. So in that duration the piston 36 stays nearly in its position and the actor 14 has a nearly solid base to act on so that the ground plate 16 of the actor 14 acts on the needle 8 and on the spring washer 12 in order to move the needle 8 out of its closing position.
- a first compensation element 41 which may be arranged in a compensation element recess 48 of the piston 36 gets deformed elastically. By its elastic deformation, the first compensation element 41 compensates the thermal expansion of the fluid in the second fluid chamber 46 and because of the clearance fit between the piston 36 and the recess 33, it compensates the thermal expansion of the fluid in the first fluid chamber 44.
- a fluid recess 50 (figure 3) in the piston 36.
- the fluid recess 50 extends from the first fluid chamber 44 to the second fluid chamber 46.
- the fluid recess 50 of the piston 36 may be formed in such a way that the fluid which passes the fluid recess 50 gets throttled.
- the second compensation element 42 compensates the thermal expansion of the fluid of the compensation assembly 30 in the same manner as the first compensation element 41.
- the fluid recess 50 and the clearance fit between the piston 36 and the fluid recess 33 of the cup shaped compensation assembly body 32 enable a hydraulic coupling of the first and the second fluid chamber 44, 46.
- first check valve 54 in such a way that the fluid which passes the fluid recess 50 of the piston 36 has to pass the first check valve 54.
- the first check valve 54 may be of a sheet-like check valve type.
- the sheet-like check valve may be made of a thin metal sheet covering the fluid recess 50 of the piston 36 and being fixed only at one side of the fluid recess 50 of the piston 36 comprising a given flexibility. If the piston 36 moves very slowly, for example because of the thermal expansion of the injector housing 1, there is nearly the same pressure on both sides of the sheet-like check valve. So, the fluid may pass the sheet-like check valve.
- the sheet-like check valve gets pressed against the piston 36 next to the fluid recess 50 of the piston 36 because of the fluid pressure in the first fluid chamber 44. In that way, the fluid recess 50 gets sealed by the sheet-like check valve. So the piston 36 is not able to move further towards the bottom portion 34.
- the compensation assembly 30 reacts like a stiff body. So, the actor 14 is able to act on the needle 8 via its ground plate 16.
- a third compensation element 43 (figure 4) in a compensation element recess 49 of the cup shaped compensation assembly body 32.
- the compensation element recess 49 is formed like a groove circumferential the wall of the recess 33 of the cup shaped compensation assembly body 32.
- the third compensation element 43 compensates the thermal expansion of the fluid in the first and the second fluid chamber 44, 46 in the same manner as the first and/or the second compensation element 41, 42.
- the bottom portion 34 may comprise a fluid recess 56 (figure 5) of the bottom portion 34 which extends from the first side of the bottom portion 51 to the second side of the bottom portion 53. Then, the second side of the bottom portion 53 preferably is covered by the second membrane 57 forming a third fluid chamber 55 between the second membrane 57 and the second side of the bottom portion 53.
- the compensation device spring may be arranged in this embodiment in such a way that the compensation device spring acts on the second membrane 57.
- the fluid recess 56 of the bottom portion 34 may be formed in such a way that the fluid which passes the fluid recess 56 of the bottom portion 34 is throttled by passing the fluid recess 56 of the bottom portion 34.
- a second throttle arranged in the fluid recess 56 of the bottom portion 34 and/or a control valve and/or a second check valve 58.
- the second check valve 58 for example comprises two sheet-like pieces of metal which are fixed on one side of the wall of the fluid recess 56 of the bottom portion 34 and which are pressed together on the other side of the sheet-like check valve.
- the second check valve alternatively comprises only one sheet-like piece of metal.
- the control valve in this context is a valve which enables a direct controlling of the valve, for example an electric valve which could be controlled via a controlling device.
- the compensation assembly 30 reacts like a stiff body and the force caused by the expansion of the actor 14 is transferred to the needle 8.
- the needle 8 is forced outside of its closing position and enables the fluid flow into the combustion chamber of the internal combustion engine.
- the first compensation element 41 in the compensation element recess 48 of the piston 36.
- a fluid supply 64 for example, arranged in the bottom portion 34 of the cup shaped compensation assembly body 32.
- the fluid supply 64 preferably gets sealed by a sealing ball 62.
- a spring acts on the first and/or the second membrane 35, 57.
- a fourth compensation element 61 (figure 6) in a compensation element recess 59 of the bottom portion 34 of the cup shaped compensation assembly body 32.
- the control valve 66 may be arranged. If the control valve is normally open, the fluid can flow from the first to the third fluid chamber 44, 55 in order to compensate, for example, the thermal expansion of the injector housing 1. If the actor 14 gets energized, the control valve 66 has to be closed simultaneously. Then, the piston 36 is not able to move towards the bottom portion 34 and the actor 14 is able to open the needle 8.
- the compensation assembly 30 does not comprise the second fluid chamber 46 (figure 7).
- the recess 33 of the cup shaped compensation assembly body 32 then preferably is sealed by a sealing 68 at the piston 36.
- the piston 36 may not comprise the piston rod 33 and acts directly on the top plate of the actor 40.
- the check valve 58 may be of a sheet-like type covering the fluid recess 56 of the bottom portion 34.
- a fifth compensation element may be arranged directly in the third fluid chamber 55.
- the second compensation element 42 may comprise a ring shaped circumferential piston rod 38.
- the alternative embodiments may be combined.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06001744A EP1813805A1 (fr) | 2006-01-27 | 2006-01-27 | Ensemble de compensation pour un injecteur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06001744A EP1813805A1 (fr) | 2006-01-27 | 2006-01-27 | Ensemble de compensation pour un injecteur |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1813805A1 true EP1813805A1 (fr) | 2007-08-01 |
Family
ID=36405987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06001744A Withdrawn EP1813805A1 (fr) | 2006-01-27 | 2006-01-27 | Ensemble de compensation pour un injecteur |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1813805A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2141346A1 (fr) * | 2008-07-03 | 2010-01-06 | Continental Automotive GmbH | Agencement de compensation thermique et soupape d'injection |
EP2228575A1 (fr) * | 2009-03-06 | 2010-09-15 | Firma SVM Schultz | Electroaimant |
WO2013135460A1 (fr) * | 2012-03-16 | 2013-09-19 | Robert Bosch Gmbh | Groupe composé |
EP3181888A1 (fr) * | 2015-12-17 | 2017-06-21 | Robert Bosch Gmbh | Injecteur de carburant |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19708304A1 (de) | 1997-02-28 | 1998-09-10 | Siemens Ag | Vorrichtung zur Übertragung einer Bewegung und Einspritzventil mit einer Vorrichtung zur Übertragung einer Bewegung |
DE10245109A1 (de) | 2002-09-27 | 2004-04-08 | Siemens Ag | Injektor, insbesondere Kraftstoff-Einspritzventil, mit einem piezoelektrischen Aktor |
EP1445479A1 (fr) * | 2003-02-04 | 2004-08-11 | Siemens VDO Automotive S.p.A. | Compensateur pour la compensation de dilatations thermiques pour un dispositif de dosage |
WO2005026528A1 (fr) * | 2003-09-12 | 2005-03-24 | Siemens Aktiengesellschaft | Element de compensation hydraulique |
EP1519035A1 (fr) * | 2003-09-17 | 2005-03-30 | Robert Bosch GmbH | Soupape d'injection de combustible |
EP1519037A1 (fr) * | 2003-09-29 | 2005-03-30 | Robert Bosch Gmbh | Soupape d'injection de carburant |
EP1538331A1 (fr) * | 2003-12-03 | 2005-06-08 | Robert Bosch Gmbh | Soupape d'injection de carburant |
DE102004002081A1 (de) * | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
-
2006
- 2006-01-27 EP EP06001744A patent/EP1813805A1/fr not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19708304A1 (de) | 1997-02-28 | 1998-09-10 | Siemens Ag | Vorrichtung zur Übertragung einer Bewegung und Einspritzventil mit einer Vorrichtung zur Übertragung einer Bewegung |
DE10245109A1 (de) | 2002-09-27 | 2004-04-08 | Siemens Ag | Injektor, insbesondere Kraftstoff-Einspritzventil, mit einem piezoelektrischen Aktor |
EP1445479A1 (fr) * | 2003-02-04 | 2004-08-11 | Siemens VDO Automotive S.p.A. | Compensateur pour la compensation de dilatations thermiques pour un dispositif de dosage |
WO2005026528A1 (fr) * | 2003-09-12 | 2005-03-24 | Siemens Aktiengesellschaft | Element de compensation hydraulique |
EP1519035A1 (fr) * | 2003-09-17 | 2005-03-30 | Robert Bosch GmbH | Soupape d'injection de combustible |
EP1519037A1 (fr) * | 2003-09-29 | 2005-03-30 | Robert Bosch Gmbh | Soupape d'injection de carburant |
EP1538331A1 (fr) * | 2003-12-03 | 2005-06-08 | Robert Bosch Gmbh | Soupape d'injection de carburant |
DE102004002081A1 (de) * | 2004-01-15 | 2005-08-04 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2141346A1 (fr) * | 2008-07-03 | 2010-01-06 | Continental Automotive GmbH | Agencement de compensation thermique et soupape d'injection |
EP2228575A1 (fr) * | 2009-03-06 | 2010-09-15 | Firma SVM Schultz | Electroaimant |
WO2013135460A1 (fr) * | 2012-03-16 | 2013-09-19 | Robert Bosch Gmbh | Groupe composé |
CN104169566A (zh) * | 2012-03-16 | 2014-11-26 | 罗伯特·博世有限公司 | 组件 |
JP2015517059A (ja) * | 2012-03-16 | 2015-06-18 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | 構成アッセンブリ |
US9709181B2 (en) | 2012-03-16 | 2017-07-18 | Robert Bosch Gmbh | Assembly |
EP3181888A1 (fr) * | 2015-12-17 | 2017-06-21 | Robert Bosch Gmbh | Injecteur de carburant |
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