EP1731753B1 - Injecteur et compensateur pour un injecteur - Google Patents
Injecteur et compensateur pour un injecteur Download PDFInfo
- Publication number
- EP1731753B1 EP1731753B1 EP06114511A EP06114511A EP1731753B1 EP 1731753 B1 EP1731753 B1 EP 1731753B1 EP 06114511 A EP06114511 A EP 06114511A EP 06114511 A EP06114511 A EP 06114511A EP 1731753 B1 EP1731753 B1 EP 1731753B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cup
- shaped body
- ring
- protrusion
- 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 - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims description 32
- 239000007924 injection Substances 0.000 title claims description 32
- 230000008878 coupling Effects 0.000 claims description 47
- 238000010168 coupling process Methods 0.000 claims description 47
- 238000005859 coupling reaction Methods 0.000 claims description 47
- 238000007789 sealing Methods 0.000 claims description 42
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 description 11
- 239000000446 fuel Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- 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
- 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
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
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- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8061—Fuel injection apparatus manufacture, repair or assembly involving press-fit, i.e. interference or friction fit
-
- 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
Definitions
- the invention relates to a compensation element for an injection valve, which comprises a cup-shaped body with a pot bottom and a recess in which a piston is arranged axially movable. Furthermore, the invention relates to an injection valve.
- an injection valve with a hydraulic compensating element is known.
- an existing clearance must be compensated.
- the compensation of the game can thereby be generated in that a closed hydraulic system is generated and a piston above an upper working volume and below the piston, a lower working volume is created.
- An approximately occurring pressure difference between the upper and lower working volume is compensated by a joint gap when the pressure difference builds up slowly.
- a metering device is known.
- a housing of the metering device has an orifice.
- a piezoactuator cooperates with a valve needle to control axial movement of the valve needle.
- a thermal compensator unit is provided to compensate for thermal expansion of the housing relative to the piezoactuator.
- the compensator unit includes a compensator housing and a piston.
- the compensator housing and the piston form a first fluid chamber.
- a second fluid chamber is formed between the piston and a sealing member sealingly sealing the compensator housing together with the piston.
- the object of the invention is to provide an injection valve and a compensation element for an injection valve, which is easy to manufacture and simply allows precise metering of fuel into a combustion chamber of an internal combustion engine.
- the invention is characterized by an injection valve and a compensation element for the injection valve.
- the compensating element comprises a cup-shaped body with a pot bottom and a recess.
- the compensation element comprises a piston, which has a clearance fit with respect to the recess of the pot-shaped body at an axially extending guide portion of the piston.
- the piston is arranged at least partially axially movable with the guide portion in the recess of the cup-shaped body.
- a sealing element is facing away from the bottom of the pot Side of the guide portion arranged and couples the pot-shaped body with the piston. Due to the cup-shaped body, the piston and the sealing element, a hydraulically and / or pneumatically sealed system is limited.
- the coupling of the sealing element with the cup-shaped body and / or the piston is non-positive.
- the sealing element comprises an outer ring and an inner ring.
- the outer ring and the inner ring are coupled together by a sealing ring.
- the sealing ring has a greater elasticity than the outer ring and the inner ring.
- the frictional coupling of the sealing element with the cup-shaped body and / or the piston is very simple and inexpensive to produce. In addition, only a negligible heat is generated during assembly of the sealing element on the cup-shaped body and / or the piston. This allows versatile design options in the construction of the sealing element and a large selection of materials for the compensation element.
- a relatively inelastic inner and outer ring for example, comprise a metal, allow easy frictional coupling between the inner ring and piston and / or outer ring and cup-shaped body.
- a relatively elastic sealing ring allows the formation of a hydraulically and / or pneumatically sealed system with simultaneous movement of the piston.
- the outer ring and / or the cup-shaped body in a cylindrical outer coupling region at least a first outer bulge.
- the sealing element is coupled to the cup-shaped body.
- the first outer protrusion extends around the entire circumference of the outer coupling region.
- the first outer bulge has an interference fit with respect to the cup-shaped body or the outer ring in the coupling region.
- the outer ring or the cup-shaped body are determined on the basis of the interference fit on the cup-shaped body or the outer ring. The interference fit of the first outer bulge allows easy frictional and tight coupling of the outer ring with the cup-shaped body.
- the outer ring and / or the cup-shaped body in the outer coupling region has a second outer bulge on.
- the second outer protrusion extends around the entire circumference of the outer coupling region.
- the second outer protrusion has a greater excess with respect to the cup-shaped body or outer ring in the coupling region than the former outer protrusion.
- the second outer bulge in the axial direction is offset from the first outer bulge such that, when the outer ring is mounted on the cup-shaped body, first the first outer bulge and then the second outer bulge are coupled to the pot-shaped body or the outer ring.
- the second outer bulge simply contributes to the positive and tight coupling.
- the inner ring and / or the piston in a cylindrical inner coupling region at least a first inner bulge.
- the sealing element is coupled to the piston.
- the first inner protrusion extends around the entire circumference of the inner coupling region.
- the first inner recess has an interference fit with respect to the piston or the inner ring in the coupling region. The inner ring and / or the piston are fixed due to the interference fit on the piston or the inner ring. The interference fit of the first inner recess simply allows a frictional coupling of the inner ring with the piston.
- the inner ring and / or the piston in the inner coupling region on a second inner bulge extends around the entire circumference of the inner coupling region. Furthermore, the second inner protrusion has a larger excess with respect to the piston or the inner ring in the coupling region than the first inner bulge.
- the second inner recess is formed so offset in the axial direction to the first inner recess that when mounting the inner ring to the piston first the first inner recess and then the second inner recess is coupled to the piston or the inner ring. The second inner recess simply contributes to the positive and tight coupling.
- the first and / or the second outer bulge and / or the first and / or the second inner bulge are rounded in profile. Due to the rounded formation, a punctiform contact surface is theoretically generated. This simply allows a plastic deformation of the bulges and the cup-shaped body and / or the piston in the coupling regions and thus a frictional coupling. In addition, a round formation of the bulges allows easy installation.
- the piston comprises a piston rod and a piston head, which comprises the guide section.
- the piston rod protrudes from the recess of the pot-shaped body so that its axial end, which faces away from the piston head, outside the dense system. This simply contributes to the compensatory effect of the compensating element.
- the compensation element of the inner ring is coupled to the piston rod.
- the entire surface of the piston head, which faces the piston rod is available as a hydraulically effective surface. This simply contributes to the advantageous effect of the compensating element.
- the sealing ring comprises an elastomer. This allows a high compressive strength with good elongation properties of the sealing ring.
- An injection valve ( FIG. 1 ) comprises a housing 1, a nozzle assembly 2 and an actuator.
- the injection valve is preferably designed as a fuel injection valve for injecting fuel into a combustion chamber of an internal combustion engine.
- the housing 1 of the injection valve may be formed double-tube.
- the nozzle assembly 2 comprises a nozzle body 4 with a recess and a nozzle needle 6, which is arranged axially movable in the recess of the nozzle body 4.
- the nozzle needle 6 is in the region of a guide 8 in the recess of the nozzle body 4 led.
- the nozzle needle 6 in cooperation with the nozzle body 4 prevents fluid flow through an injection opening.
- the injection opening is formed outside the closed position of the nozzle needle 6 by a cylindrical gap between the nozzle needle 6 and the nozzle body 4, through which the fuel can be metered into the combustion chamber of the internal combustion engine.
- the injection opening may be formed, for example, by one or more injection holes in the nozzle body 4.
- a nozzle spring 10 biases the nozzle needle 6 via a spring plate 12 in the direction of the actuator, which is preferably designed as a piezo actuator 14. This causes that when not actuated piezoelectric actuator 14, the injection port is closed.
- the piezoactuator 14 acts on the nozzle needle 6 via the bottom plate 16.
- a cover plate 18 is arranged on the side of the piezoactuator 14 facing away from the bottom plate 16.
- the ceiling plate 18 is coupled to a compensating element 30, which is supported on the side facing away from the ceiling plate 18 of the compensating element 30 at a terminal 20.
- the port 20 may include a plurality of leads, bores and recesses, for example, suitable for supplying fuel into the injection valve or for receiving electrical lines for conducting electrical signals, for example to the piezoelectric actuator 14.
- a fuel supply 22 is through the gap between the housing 1 and the inner tube 15 is formed. Alternatively, the fuel can also be guided via a recess in the housing 1 and / or the nozzle assembly 2 to the injection opening.
- the position of the nozzle needle 6 is determined by the forces that the nozzle spring 10 and the piezoelectric actuator 14 on the nozzle needle 6 exercise. As long as the force exerted by the piezoactuator 14 on the nozzle needle 6, is less than the force exerted by the nozzle spring 10 on the nozzle needle 6, the injection port is closed and a metering of fuel is prevented. As soon as the force which the piezoactuator 14 exerts on the nozzle needle 6 is greater than the force which the nozzle spring 10 exerts on the nozzle needle, the nozzle needle 6 is pressed in the direction away from the piezoactuator 14 and thus releases the injection opening.
- the extent of the piezoactuator 14 is regulated by the voltage applied to it.
- the electrical energy deposited in the piezoactuator 14, in particular the deposited electrical charges is representative of the extent of the piezoactuator 14.
- the extent of the piezoactuator 14 is determined by its temperature. The greater the temperature of the piezoactuator 14, the greater is its extent. Since the expansion of the piezoactuator 14 due to temperature fluctuations in the order of magnitude of the expansion due to the deposited electrical charges, it must be ensured that the injection valve works precisely even at very different temperatures.
- the piezoelectric actuator 14 is arranged axially movable in the housing and coupled to the compensation element 30.
- the compensation element 30 ( FIG. 2 ) comprises a pot-shaped body 32.
- the cup-shaped body 32 includes a pot bottom 34 and a pot wall which laterally bounds the recess in the cup-shaped body 32.
- the pot bottom 34 preferably comprises a recess, which is closed, for example, by a closure ball 35.
- a piston 36 is arranged axially movable.
- the piston 36 preferably comprises a piston rod 38 and a piston head 40.
- the piston head 40 has a guide portion 41. In the guide section 41, the piston head 40 has a clearance fit with respect to the recess in the cup-shaped body 32. The clearance fit allows a guide of the piston 36 in the recess of the cup-shaped body 32.
- a piston recess 42 extends at least partially in the axial direction from the side of the piston head 40, which faces the bottom of the pot 34, to the side of the piston head 40, the the pot bottom 34 is turned away.
- the piston 36 is coupled via a sealing element 44 with the cup-shaped body 32.
- the sealing element 44 is coupled to the piston rod 38.
- the sealing element 44 preferably comprises an inner ring 48 and an outer ring 50, which are coupled together via a sealing ring 46.
- the material of the sealing ring 46 is formed relatively elastic compared to the material of the inner ring 48 and the outer ring 50.
- the sealing ring 46 may be an elastomer and the inner and / or outer ring may comprise, for example, a metal.
- the modulus of elasticity of the material for the sealing ring may be less than 10 GPa, and the modulus of elasticity of the material for the inner and outer rings 48, 50 may be greater than 10 GPa.
- a first working volume 52 is formed between the piston head 40 and the pot bottom 34. Between the sealing ring 46 and the piston head 40, a second working volume 54 is formed. Through the piston recess 42 and / or by a suitable choice of clearance fit between the guide portion 41 and the pot wall of the cup-shaped body 32 communicates the first working volume 52 with the second working volume 54.
- the piston 36 is inserted into the cup-shaped body 32 be coupled via the sealing element 44 with the cup-shaped body 32.
- the inner ring and / or the outer ring 48, 50 coupled by a press fit with the piston 36 and the cup-shaped body 32.
- a gas-free oil in the first and second working volume 52, 54 is filled via the recess in the bottom of the pot 34.
- the recess in the pot bottom 34 is preferably closed by the closure ball 35, which has an interference fit with respect to the recess in the pot bottom 34.
- the sealing element 44, the piston 36 and the cup-shaped body 32 thus form a hydraulically sealed system.
- the piston recess 42 and / or the clearance between the piston head 40 and the pot wall of the pot-shaped body 32 are dimensioned so that during a slow movement of the piston 36 in the direction of the pot bottom 34, caused for example by a thermal expansion of the piezo actuator 14, a Oil exchange between the first working volume 52 and the second working volume 54 is easily possible. The thermal expansion of the piezo actuator 14 is thus compensated by the compensation element 30.
- the piezo actuator 14 is electrically actuated to open the injection opening, it expands rapidly, for example in the order of microseconds. With such a rapid expansion, a pressure compensation over the clearance or the piston recess 42 is not fast enough possible and the compensation element 30 acts as a whole as a rigid body. As a result, the force with which the piezoactuator 14 expands is transmitted to the nozzle needle 6, so that it releases the injection opening.
- the frictional connection between the inner ring 48 and the piston rod 38 can be produced in a particularly simple and effective manner, if preferably the piston rod 38 has a first inner recess 56 (FIG. FIG. 3 ) having.
- the first inner recess 56 may alternatively be formed on the inner ring 48.
- the first inner protrusion 56 has a rounded profile. Due to the rounded profile, a linear contact surface between the piston rod 38 and the inner ring 48 is theoretically formed in the profile. This results in a simple plastic or elastic deformability of the first inner recess 56 and the inner ring 48 or the piston rod 38 the first inner recess 56, the sealing element 44 are simply mounted on the piston rod 38.
- Both the sealing and non-positive action of the first inner protrusion 56 may be reinforced by a second inner protrusion 58.
- the second inner recess 58 may be formed on the piston rod 38 and / or the inner ring 48.
- the additional formation of the second inner dimple 58 provides the ability to select the first inner dimple 56 with its maximum diameter such that surface inaccuracies on the inner ring 48, or the piston rod 38 are compensated in an inner coupling region due to plastic deformation.
- the inner coupling region extends over the entire region where the inner ring 48 is coupled to the piston rod 38.
- first inner recess 56 and of the inner ring 48 or of the piston rod 38 is first of all smoothed. Another plastic deformation then takes place during further assembly by coupling the second inner bulge 58 to the inner ring 48 and the piston rod 38, respectively.
- further inner bulges may also be provided.
- the inner bulges may all have the same diameter or different diameters and may be formed according to the first or second inner bulge.
- the outer ring 50 with the cup-shaped body 32 (FIG. FIG. 4 ), preferably fixed by a press fit, via a first outer bulge 60 on the cup-shaped body 32 and / or the outer ring 50.
- the outer ring 50 can both have a larger diameter and a smaller diameter than the pot-shaped body 32 in an outer coupling region ( FIG. 5 ), in which the cup-shaped body 32 is coupled to the outer ring 50.
- the first outer bulge 60 is preferably rounded in profile. This simply allows an effective and tight coupling of the outer ring 50 with the pot-shaped body 32 and in addition a simple assembly of the outer ring 50 on the cup-shaped body 32nd
- the outer ring 50 and / or the cup-shaped body 32 may include a second outer protrusion 62.
- the second outer bulge 62 has a greater excess with respect to the cup-shaped body 32 and the outer ring 50 than the first outer bulge 60.
- first the first outer bulge 60 is coupled to the cup-shaped body 40 and the outer ring 50 and then the second outer bulge 62.
- first and second outer bulges 60, 62 further inner bulges may also be provided.
- the outer lobes may all have the same diameter or different diameters and may be formed corresponding to the first or second outer lobes 60, 62.
- a sealing element with a welding process is determined gas-tight on a cup-shaped body.
- a welding process creates a great heat, which heats the entire compensation element.
- the great heat development must also be taken into account in the construction of the compensating element of the prior art.
- the compensation element In addition to the expensive and time-consuming welding process, the compensation element must be laboriously cleaned after the welding process. In a non-positive coupling of the sealing element with the cup-shaped body and / or a piston, only a negligible heat. This allows a great deal of freedom in the design of the compensation element and in the choice of materials for the compensation element.
- the invention is not limited to the embodiments.
- further bulges may be formed.
- the further bulges can then be coordinated with each other in their training, so that an advantageous assembly and coupling is possible.
- the profiles of the bulges 56, 58, 60, 62 and the further bulges can be designed differently.
- a suitable profile may be triangular.
- one or more edges may be formed in the profile, as long as an assembly is still possible.
- the bulges 56, 58, 60, 62 may extend in a circle around the coupling regions, but they may also extend, for example, meander-shaped or zigzag-shaped around the coupling regions.
- the injection valve can also be provided with an inwardly opening nozzle needle or the nozzle needle can be indirectly driven by the piezoactuator 14, for example via a hydraulic coupling.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Claims (10)
- Elément de compensation (30) pour une soupape d'injection, comprenant- un corps en forme de pot (32) présentant un fond de pot (34) et une cavité,- un piston (36) qui dans une partie de guidage (41) s'étendant axialement et lui appartenant présente un ajustement avec jeu par rapport à la cavité du corps en forme de pot (32) et qui est mobile axialement, au moins partiellement avec la partie de guidage (41), dans la cavité du corps en forme de pot (32),- un élément d'étanchéité (44) qui est disposé du côté de la partie de guidage (41) opposé au fond du pot (32) et qui accouple le corps en forme de pot (32) et le piston (36), dans lequel le corps en forme de pot (32), le piston (36) et l'élément d'étanchéité (44), délimitent un système hydrauliquement et/ou pneumatiquement étanche dans lequel l'accouplement de l'élément d'étanchéité (44) conjugué sur le plan des forces est avec le corps en forme de pot (32) et/ou le piston (36),caractérisé en ce que l'élément d'étanchéité (44) comprend un anneau extérieur (50) et un anneau intérieur (48) couplés l'un à l'autre par un anneau d'étanchéité (46), ce dernier présentant une élasticité supérieure à celles de l'anneau extérieur (50) et de l'anneau intérieur (48).
- Elément de compensation (30) selon la revendication 1, dans lequel l'anneau extérieur (50) et/ou le corps en forme de pot (32) présente(nt) au moins un premier renflement extérieur (60) dans une zone d'accouplement cylindrique extérieure dans laquelle l'élément d'étanchéité (44) et le corps en forme de pot (32) sont accouplés, ce premier renflement extérieur s'étendant sur toute la périphérie de la zone extérieure d'accouplement et présentant dans la zone d'accouplement un ajustement surdimensionné par rapport au corps en forme de pot (32) ou par rapport à l'anneau extérieur (50), de sorte que le premier renflement extérieur est immobilisé vis-à-vis du corps en forme de pot (32) ou de l'anneau extérieur (50).
- Elément de compensation (30) selon la revendication 2, dans lequel dans la zone d'accouplement extérieure, l'anneau extérieur (50) et/ou le corps en forme de pot (32) présente(nt) un deuxième renflement extérieur (62) qui s'étend sur toute la périphérie de la zone d'accouplement extérieure, qui, dans la zone d'accouplement, présente un surdimensionnement par rapport au corps en forme de pot (32) ou à l'anneau extérieur (50) plus grand que le premier renflement extérieur (60) et qui est conformé en direction axiale de façon décalée par rapport au premier renflement extérieur (60) de telle façon que lors d'un montage de l'anneau extérieur (50) sur le corps en forme de pot (32), c'est d'abord le premier renflement extérieur (60) qui est couplé avec le corps en forme de pot (32) ou avec l'anneau extérieur (50) avant que n'y soit couplé le deuxième renflement extérieur (62).
- Elément de compensation (30) selon l'une des revendications précédentes, dans lequel, dans une zone d'accouplement intérieure cylindrique dans laquelle l'élément d'étanchéité (44) est accouplé au piston (36), l'anneau intérieur (48) et/ou le piston (36) présente(nt) au moins un premier renflement intérieur (56) qui s'étend sur toute la périphérie de la zone d'accouplement intérieure et qui dans la zone d'accouplement présente un ajustement surdimensionné par rapport au piston (36) ou à l'anneau intérieur (48) de manière à être immobilisé par rapport au piston (36) ou de l'anneau extérieur (50).
- Elément de compensation (30) selon la revendication 4, dans lequel, dans la zone d'accouplement intérieure, l'anneau intérieur (48) et/ou le piston (36) présente(nt) un deuxième renflement intérieur (58) qui s'étend sur toute la périphérie de la zone d'accouplement intérieure, qui présente dans la zone d'accouplement un surdimensionnement par rapport au piston (36) ou à l'anneau intérieur (48) plus grand que le premier renflement intérieur (56) et qui est conformé en direction axiale de façon décalée par rapport au premier renflement intérieur (56) de telle façon que lors d'un montage de l'anneau intérieur (48) sur le piston (36), c'est d'abord le premier renflement intérieur (56) qui est couplé avec le piston (36) ou avec l'anneau intérieur (48) avant que n'y soit couplé le deuxième renflement intérieur (58).
- Elément de compensation (30) selon l'une des revendications 2 à 5, dans lequel le premier et/ou le deuxième renflement extérieur (60, 62) et/ou le premier et/ou le deuxième renflement intérieur (56, 58) ont un profil arrondi.
- Elément de compensation (30) selon l'une des revendications précédentes, dans lequel le piston (36) comprend une tête de piston (40) comprenant la partie de guidage (41) et une tige de piston (38) qui s'étend hors de la cavité du corps en forme de pot (32) et dont l'extrémité axiale opposée à la tête de piston (40) se situe en dehors du système étanche.
- Elément de compensation (30) selon la revendication 7, dans lequel l'anneau intérieur (48) est accouplé à la tige de piston (38).
- Elément de compensation (30) selon l'une des revendications précédentes, dans lequel l'anneau d'étanchéité (46) comprend un élastomère.
- Soupape d'injection comprenant l'élément de compensation (30) selon l'une des revendications 1 à 9.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005025953A DE102005025953A1 (de) | 2005-06-06 | 2005-06-06 | Einspritzventil und Ausgleichselement für ein Einspritzventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1731753A1 EP1731753A1 (fr) | 2006-12-13 |
EP1731753B1 true EP1731753B1 (fr) | 2010-04-21 |
Family
ID=36952581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06114511A Expired - Fee Related EP1731753B1 (fr) | 2005-06-06 | 2006-05-24 | Injecteur et compensateur pour un injecteur |
Country Status (3)
Country | Link |
---|---|
US (1) | US7673811B2 (fr) |
EP (1) | EP1731753B1 (fr) |
DE (2) | DE102005025953A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007008863A1 (de) * | 2005-08-26 | 2008-08-28 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE102009024595A1 (de) | 2009-06-10 | 2011-03-24 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
DE102009024596A1 (de) * | 2009-06-10 | 2011-04-07 | Continental Automotive Gmbh | Einspritzventil mit Übertragungseinheit |
DE102011089247A1 (de) * | 2011-12-20 | 2013-06-20 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
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US5275387A (en) * | 1992-04-09 | 1994-01-04 | Power Components, Inc. | Gas spring |
US5380016A (en) * | 1992-11-12 | 1995-01-10 | Caterpillar Inc. | Radial lip seal |
DE19946841A1 (de) * | 1999-09-30 | 2001-05-03 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE19950760A1 (de) * | 1999-10-21 | 2001-04-26 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE19951004A1 (de) * | 1999-10-22 | 2001-04-26 | Bosch Gmbh Robert | Hydraulische Steuervorrichtung, insbesondere für einen Injektor |
DE60126380T2 (de) * | 2000-07-18 | 2007-11-15 | Delphi Technologies, Inc., Troy | Kraftstoffeinspritzventil |
WO2002031349A1 (fr) * | 2000-10-11 | 2002-04-18 | Siemens Vdo Automotive Corporation | Ensemble compensateur muni d'une soupape sensible a la pression destine a etre accouple a un actionneur a solide situe dans un injecteur de carburant |
WO2002038948A1 (fr) * | 2000-11-13 | 2002-05-16 | Siemens Vdo Automotive Corporation | Compensateur magnetique-hydraulique pour injecteur de carburant |
DE10115214A1 (de) * | 2001-03-28 | 2002-10-10 | Bosch Gmbh Robert | Kraftstoffhochdrucksystem für Brennkraftmaschinen |
DE10140799A1 (de) * | 2001-08-20 | 2003-03-06 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
US6766965B2 (en) * | 2001-08-31 | 2004-07-27 | Siemens Automotive Corporation | Twin tube hydraulic compensator for a fuel injector |
DE10145620B4 (de) * | 2001-09-15 | 2006-03-02 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10162045B4 (de) * | 2001-12-17 | 2005-06-23 | Siemens Ag | Vorrichtung zum Übersetzen einer Auslenkung eines Aktors, insbesondere für ein Einspritzventil |
US6749127B2 (en) * | 2002-02-11 | 2004-06-15 | Siemens Vdo Automotive Corporation | Method of filling fluid in a thermal compensator |
DE10233907A1 (de) | 2002-07-25 | 2004-02-12 | Siemens Ag | Vorrichtung zum Übertragen einer Auslenkung eines Aktors mit einem Elastomerring |
DE60204565T2 (de) * | 2002-08-20 | 2005-11-03 | Siemens Vdo Automotive S.P.A., Fauglia | Dosiergerät mit Thermalkompensationseinheit |
DE10360451B4 (de) | 2003-02-27 | 2014-01-09 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US7500648B2 (en) * | 2003-02-27 | 2009-03-10 | Robert Bosch Gmbh | Fuel-injection valve |
DE10332088A1 (de) | 2003-07-15 | 2005-02-03 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10344061A1 (de) | 2003-09-23 | 2005-04-28 | Siemens Ag | Einspritzventil mit einem hydraulischen Ausgleichselement |
DE102004005456A1 (de) * | 2004-02-04 | 2005-08-25 | Robert Bosch Gmbh | Kraftstoffinjektor mit direktgesteuertem Einspritzventilglied |
DE102004035313A1 (de) * | 2004-07-21 | 2006-02-16 | Robert Bosch Gmbh | Kraftstoffinjektor mit zweistufigem Übersetzer |
DE102005004738A1 (de) * | 2005-02-02 | 2006-08-10 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Nadelsteuerung für eine Brennkraftmaschine |
DE102005009147A1 (de) * | 2005-03-01 | 2006-09-07 | Robert Bosch Gmbh | Kraftstoffinjektor für Verbrennungskraftmaschinen |
-
2005
- 2005-06-06 DE DE102005025953A patent/DE102005025953A1/de not_active Withdrawn
-
2006
- 2006-05-24 DE DE502006006754T patent/DE502006006754D1/de active Active
- 2006-05-24 EP EP06114511A patent/EP1731753B1/fr not_active Expired - Fee Related
- 2006-06-05 US US11/446,719 patent/US7673811B2/en not_active Expired - Fee Related
Also Published As
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US20070028613A1 (en) | 2007-02-08 |
US7673811B2 (en) | 2010-03-09 |
DE502006006754D1 (de) | 2010-06-02 |
EP1731753A1 (fr) | 2006-12-13 |
DE102005025953A1 (de) | 2006-12-07 |
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