EP3851663A1 - Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice - Google Patents

Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice Download PDF

Info

Publication number
EP3851663A1
EP3851663A1 EP20152340.4A EP20152340A EP3851663A1 EP 3851663 A1 EP3851663 A1 EP 3851663A1 EP 20152340 A EP20152340 A EP 20152340A EP 3851663 A1 EP3851663 A1 EP 3851663A1
Authority
EP
European Patent Office
Prior art keywords
valve seat
seat body
body assembly
ring surface
fluid
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Withdrawn
Application number
EP20152340.4A
Other languages
German (de)
English (en)
Inventor
Valerio Polidori
Stefano Filippi
Mauro Grandi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vitesco Technologies GmbH
Original Assignee
Vitesco Technologies GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Priority to EP20152340.4A priority Critical patent/EP3851663A1/fr
Publication of EP3851663A1 publication Critical patent/EP3851663A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M61/1853—Orifice plates

Definitions

  • the invention relates to a valve seat body assembly for a fluid injector of an internal combustion engine, wherein the valve seat body assembly comprises a valve seat body which extends in axial and radial direction with respect to a central longitudinal axis and an orifice part which is arranged at the valve seat body.
  • Fluid injectors are in widespread use, in particular for internal combustion engines, where they may be arranged in order to doze a fluid or fuel amount into an intake manifold of the internal combustion engine or directly into a combustion chamber of a cylinder of the internal combustion engine.
  • One possible starting point to reduce the pollutant emission and in particular to reduce particle emission is to increase the fluid pressure inside the fluid injector.
  • Conventional fluid injectors are designed to operate at a fluid pressure of below 10 MPa. If the fluid pressure is increased inside the fluid injector it is possible to reduce pollutant emission caused by the internal combustion engine. The increased fluid pressure inside the fluid injector requires a change of design of the fluid injector.
  • An important part of the fluid injector which has to be changed is the valve seat body assembly.
  • the valve seat body assembly is arranged at an outlet portion of the fluid injector.
  • the valve seat body assembly comprises two or more flow holes which are arranged to inject the fluid which is pressurized in the fluid injector in the combustion chamber of the internal combustion engine.
  • the valve seat body assembly forms together with a valve needle of the fluid injector a fluid tight sealing edge between the valve needle and the valve seat body assembly so that the fluid inside the fluid injector cannot flow out of the fluid injector when the valve needle contacts the valve seat body assembly.
  • the valve needle is arranged displaceable inside the fluid injector and is therefore designed to allow the fluid to flow out of the fluid injector to the flow holes of the valve seat body assembly when the valve needle is displaced away from a closing position or to create the fluid tight sealing edge when the valve needle is in the closing position.
  • the valve seat body assembly has therefore at least the following tasks: allowing or inhibiting the fluid flow out of the fluid injector, guiding of the valve needle and creating a desired fluid spray out of the flow holes into the internal combustion engine.
  • valve needle and the valve seat body assembly during the operation of the fluid injector is therefore responsible for accurate fluid release out of the fluid injector. If the fluid pressure inside the fluid injector is increased the requirements on the valve needle and especially on the valve seat body assembly change due to the reason that these parts have to handle the higher fluid pressure.
  • An object of the present disclosure is to create an improved valve seat body assembly for a fluid injector of an internal combustion engine which facilitates a reliable and precise function in particular with a high fluid pressure.
  • valve seat body assembly comprising the features of the independent claim.
  • Advantageous embodiment of the valve seat body and a fluid injector comprising the valve seat body are specified in the dependent claims.
  • a valve seat body assembly for a fluid injector of an internal combustion engine is specified. Further, a fluid injector for an internal combustion engine comprising the valve seat body assembly is specified.
  • the fluid injector is in particular a fuel injector.
  • the fuel injector is in particular configured to inject gasoline or diesel fuel. It may be provided for injecting fuel directly into a combustion chamber of the internal combustion engine.
  • the valve seat body assembly comprises a valve seat body which extends in axial and radial direction along a central longitudinal axis and an orifice part which is arranged at the valve seat body.
  • the valve seat body comprises an inlet opening and one, and only one, outlet opening.
  • the inlet opening is configured to allow a fluid to flow into a valve seat body cavity of the valve seat body.
  • the inlet opening is therefore for example a bore into the valve seat body.
  • the one, and only one, outlet opening is configured to allow the fluid to flow out of the valve seat body cavity.
  • the valve seat body cavity extends therefore through the valve seat body starting from the inlet opening to the one outlet opening. Fluid can therefore flow through the valve seat body from the inlet opening to the one outlet opening along the valve seat body cavity.
  • the valve seat body comprises according to the present disclosure an inner surface which defines the valve seat body cavity.
  • the inner surface extends therefore along the central longitudinal axis starting from the edge of the inlet opening to the one outlet opening of the valve seat body.
  • the inner surface can for example comprise cylindrical surfaces, truncated cone surfaces or different shapes.
  • the inner surface can for example be made by drilling or other manufacturing steps.
  • a portion of the inner surface of the valve seat body cavity is configured to form a sealing edge between the inner surface and a valve needle of the fluid injector when the fluid injector is in operation.
  • the valve needle can therefore engage with the portion of the inner surface to be in contact with the inner surface to form the sealing edge so that no fluid inside the valve seat body cavity can flow out of the valve seat body through the one outlet opening.
  • the valve seat body further comprises an outer surface which extends from the outlet opening in radial direction along the central longitudinal axis.
  • the outer surface is arranged coaxially with respect to the central longitudinal axis and extends from one edge of the outlet opening in radial direction with respect to the central longitudinal axis.
  • the outer surface is therefore a portion of the surface of the valve seat body, wherein the outer surface is arranged next to the one outlet opening.
  • the valve seat body assembly comprises further the orifice part which extends with respect to the central longitudinal axis.
  • the orifice part is arranged coaxially with respect to the central longitudinal axis.
  • the orifice part comprises a first surface and a second surface.
  • the first surface faces the valve seat body.
  • the first surface comprises a flat ring surface which contacts the outer surface of the valve seat body.
  • the first surface further comprises a curved ring surface which extends from the radial inner edge of the flat ring surface in radial inward direction with respect to the central longitudinal axis.
  • the curved ring surface is a for example portion of a surface of a torus or a three-dimensional ring.
  • the curved ring surface is, according to one embodiment, a concavely curved surface.
  • the curved ring surface forms together with a portion of the outer surface of the valve seat body a flow space for the fluid.
  • the flow space is a space between the valve seat body and the orifice part defined by at least the curved ring surface and the portion of the outer surface.
  • the orifice part is a machined a turned part.
  • the thickness of the orifice part can influence the penetration of the spray and is according to one embodiment customized. According to another embodiment is the thickness of the orifice part between 0,2 mm and 7 mm more preferably between 0,3 mm and 5 mm.
  • the second surface defines together with the first surface the orifice part.
  • the second surface defines a portion of an external surface of the valve seat body assembly.
  • the second surface is arranged coaxially with respect to the central longitudinal axis.
  • the first surface and the second surface face in opposite directions.
  • the surface of the orifice part comprises the first surface and the second surface and the first surface is arranged towards the valve seat body.
  • the orifice part comprises further flow holes which extend from the curved ring surface through the orifice part until the second surface.
  • the flow holes are configured to allow the fluid to flow out of the fluid injector. When the fluid injector is in operation, fluid flows from the inlet opening of the valve seat body through the valve seat body cavity out of the valve seat body through the one outlet opening into the flow space and further through the flow holes of the orifice part and out of the flow holes.
  • the valve seat body is configured, in combination with the valve needle, to provide the fluid tight sealing between the inner surface of the valve seat body and the valve needle so that no fluid can flow out of the valve seat body assembly when the valve needle is in contact with the valve seat body.
  • the spray out of the flow holes is according to the present disclosure achieved by the orifice part which comprises the flow holes. Therefore, the two functions are assigned to the specific parts.
  • the sealing function is assigned to the valve seat body and the spray development function is assigned to the orifice part. Therefore, it is possible that the valve seat body comprises only one outlet opening which creates the advantage that it is possible to have a very small sealing edge diameter. Due to the small sealing edge diameter it is possible to reduce the size of the valve needle.
  • valve seat body assembly With the reduced size of the sealing edge and the reduced size of the valve needle it is possible to achieve good sealing function even if the fluid pressure inside the valve seat body cavity increases to for example 50MPa or even 100MPa.
  • Operating the valve seat body assembly at such pressures requires a lot of energy to displace the valve needle away from the closing positions, because the force needed to actuate the valve needle depends from the interaction between the diameter of the sealing edge and the fluid pressure inside the valve cavity.
  • the diameter of the sealing edge is decreased, then the force needed to displace the valve needle away from the closing position is also decreased.
  • the diameter of the sealing edge is decreased and the fluid pressure is increased, then the force needed to displace the valve needle away from the closing position may be the same.
  • the fluid spray out of the flow holes can be designed as desired depending on different parameters which may change with different operation conditions for the fluid injector. It is also possible to place the inlet openings of the flow holes further away from the central longitudinal axis than the sealing edge, so that the design of the flow holes and especially the angle of the flow holes can be in particular freely chosen. In addition, it is possible to manufacture the flow holes in the orifice part before the orifice part is arranged at the valve seat body. This makes the manufacturing process of the flow holes in particular fast, simple and improves the design freedom of the flow holes. Overall, it is according to the present disclosure possible to increase the fluid pressure inside the valve seat body cavity, to create the needed fluid tight sealing and to create the desired fluid spray out of the flow holes with the valve seat body assembly. Pollutant emissions can be reduced and the whole valve seat body assembly is in particular improved.
  • the portion of the inner surface which is configured to form the sealing edge is a truncated cone surface.
  • the truncated cone surface is arranged coaxially with respect to the central longitudinal axis.
  • the valve seat body comprises a cylindrical surface which is arranged coaxially with respect to the central longitudinal axis.
  • the truncated cone surface extends to one longitudinal end of the cylindrical surface.
  • the cylindrical surface forms or defines the one outlet opening through which fluid flows out of the valve seat body when the fluid injector is in operation. During operation of the valve seat body assembly the fluid flows along the truncated cone surface and the cylindrical surface out of the one outlet opening.
  • the radial inner end of the truncated cone surface is adjacent to the longitudinal end of the cylindrical surface which is directed towards the valve seat body cavity. It is in particular possible to create a good fluid tight sealing between the truncated cone surface and the valve needle due to the specific design of the truncated cone surface wherein the truncated cone surface tapers in diameter towards the one outlet opening.
  • the valve needle comprises a valve needle ball wherein the valve needle ball is configured to form the sealing edge between the surface of the valve needle ball and the truncated cone surface of the valve seat body. A particular good sealing edge is at higher fluid pressures inside the valve seat body cavity achievable according to this embodiment.
  • the cylindrical surface is for example manufactured by drilling. The valve seat body and in particular the one outlet opening is therefore in particular fast manufacturable.
  • the outer surface of the valve seat body comprises a flat ring surface and a curved ring surface.
  • the flat ring surface and the curved ring surface are arranged coaxially with respect to the central longitudinal axis.
  • the curved ring extends from the one outlet opening to the flat ring surface.
  • the flat ring surface extends from the radial outer end of the curved ring surface in rectangular manner with respect to the central longitudinal axis further in radial direction.
  • the flat ring surface of the outer surface is in contact with the orifice part, in particular in full area contact. It is therefore particularly simple to arrange the orifice part at the valve seat body.
  • the curved ring surface may be portion of a torus surface.
  • the profile of the curved ring surface may comprise a portion of a circle.
  • the portion of the circle rotated by 360° around a longitudinal axis, wherein the circle segment does not contact the longitudinal axis creates the curved ring surface.
  • the curved ring surface is according to one embodiment, a convexly curved surface.
  • the outer surface comprising the flat ring surface and the curved ring surface creates an improved fluid flow out of the one outlet opening to the flow holes along the flow space to the flow holes.
  • the flat ring surface is arranged tangentially to the curved ring surface so that the curved ring surface is extended in radial outward direction by the flat ring surface. This means that the flat ring surface only touches the curved ring surface at one edge and that the curved ring surface extends smoothly along the flat ring surface. A particular good fluid flow along the outer surface is according to this embodiment achievable.
  • the radial inner end of the curved ring surface of the outer surface is closer to the inlet opening in axial direction with respect to the central longitudinal axis arranged than the flat ring surface of the outer surface.
  • a ring-shaped depression is formed by the curved ring surface in the valve seat body next to the one outlet opening.
  • the flat ring surface of the outer surface is arranged further away from the inlet opening of the valve seat body as the radial inner end of the curved ring surface.
  • the first surface of the orifice part comprises a circular surface.
  • the circular surface is arranged coaxially with respect to the central longitudinal axis.
  • the circular surface extends from the radial inner end of the curved ring surface of the first surface to the central longitudinal axis.
  • the first surface extends from the central longitudinal axis along the circular surface, the curved ring surface and the flat ring surface of the orifice part.
  • the circular surface is arranged adjacent to the one outlet opening of the valve seat body and defines therefore partially the flow space according to this embodiment.
  • the fluid flowing out of the one outlet opening into the flow space flows along the circular surface and the curved ring surface to the flow holes.
  • the circular surface is arranged closer to the one outlet opening in axial direction with respect to the central longitudinal axis than the flat ring surface of the first surface.
  • the circular surface and a portion of the curved ring surface of the first surface form a protrusion of the orifice part with respect to the flat ring surface of the first surface according to this embodiment.
  • the circular surface and the portion of the curved ring surface extend in axial direction towards the inlet opening beyond a virtual extension of the flat ring surface of the first surface to the central longitudinal axis.
  • the curved ring surface of the first surface forms a ring-shaped depression in the orifice part with respect to the flat ring surface of the first surface.
  • a portion of the curved ring surface of the first surface is arranged further away from the inlet opening of the valve seat body than the flat ring surface of the first surface in axial direction with respect to the central longitudinal axis.
  • the ring-shaped depression formed by the curved ring surface extends from the radial inner end of the flat ring surface of the first surface towards the central longitudinal axis.
  • the ring-shaped depression is therefore a portion of the flow space through which fluid flows when the fluid injector is in operation.
  • the inlet openings of the flow holes are, according to this embodiment, arranged at the ring-shaped depression. Fluid flowing out of the one outlet opening flows according to this embodiment along the flow space which is defined by the ring-shaped depression to the inlet openings of the flow holes. The fluid flow along the flow space is in particular improved.
  • the second surface of the orifice part comprises a spherical surface, a truncated cone surface and a cylindrical surface.
  • the cylindrical surface, the truncated cone surface and the spherical surface are, according to one embodiment, arranged coaxially with respect to the central longitudinal axis.
  • the second surface extends from the central longitudinal axis along the spherical surface, the truncated cone surface and the cylindrical surface.
  • the spherical surface, the truncated cone surface and the cylindrical surface face towards a combustion chamber when the valve seat body assembly is arranged in the internal combustion engine.
  • the spherical surface is arranged tangentially to the truncated cone surface of the second surface. It is in particular possible to improve the fluid spray out of the flow holes when the spherical surface of the second surface is arranged tangentially to the truncated cone surface of the second surface.
  • a longitudinal end of the cylindrical surface of the second surface is adjacent to the radial outer end of the flat ring surface of the first surface.
  • the radial outer edge of the orifice part is according to this embodiment formed by the cylindrical surface of the second surface, the radial outer end of the flat ring surface of the first surface and the radial outer end of the truncated cone surface of the second surface.
  • a rounding is arranged between the other longitudinal end of the cylindrical surface which faces away from the inlet opening of the valve seat body and the truncated cone surface of the second surface.
  • the transition edge between the truncated cone surface and the cylindrical surface of the second surface is according to this embodiment a rounding. This improves the fluid spray out of the flow holes and in addition, the combustion is improved due to the reason that less or no eddy currents are induced during the combustion by a sharp edge at this area.
  • the outer surface of the valve seat body comprises a cylindrical portion.
  • the cylindrical portion is arranged coaxially with respect to the central longitudinal axis and extends from the radial outer end of the flat ring surface of the outer surface away from the orifice part towards the inlet opening of the valve seat body.
  • the cylindrical portion has the same diameter as the cylindrical surface of the orifice part so that the cylindrical portion is arranged flush with the cylindrical surface. This helps to arrange the orifice part at the valve seat body. In addition, no sharp edges are between the valve seat body and the orifice part which might induce undesired eddy currents during the combustion.
  • the orifice part is fixed to the valve seat body by a weld connection.
  • the weld connection can for example be arranged between the cylindrical portion of the outer surface of the valve seat body and the cylindrical surface of the second surface of the orifice part. With the weld connection it is in particular easy to achieve the desired structural and sealing requirements.
  • the valve seat body assembly is configured to operate with fluid pressure above 30 MPa and below 100 MPa, preferably above 35 MPa or preferably above 45 MPa and below 80 MPa. Due to the specific design of the valve seat body assembly according to the present disclosure and the preferred embodiments it is possible to operate the valve seat body assembly at such high fluid pressure. The separation of the fluid spray development and the sealing allows to operate at such high fluid pressure and to reduce the pollutant emissions.
  • a fluid injector for an internal combustion engine comprises a valve seat body assembly with the features according to the present disclosure.
  • Fig. 1 shows a valve seat body assembly 10 of a fluid injector.
  • the valve seat body assembly 10 extends along a central longitudinal axis 30.
  • Fig. 1 shows a valve needle ball 20 of the fluid injector in dashed lines.
  • the valve needle ball 20 forms together with the valve seat body assembly 10 a sealing edge 40 so that no fluid can flow out of the valve seat body assembly 10 of the fluid injector.
  • the valve seat body assembly 10 comprises a valve seat body 100 and an orifice part 200.
  • the valve seat body 100 comprises a valve seat body cavity 110.
  • the valve seat body cavity 110 extends through the valve seat body 100 in axial direction starting from an inlet opening 120 and ends at one, and only one, outlet opening 130.
  • the valve seat body cavity 110 allows fluid to flow through the valve seat body 100.
  • the valve seat body cavity 110 is defined by an inner surface 140 of the valve seat body 100.
  • a portion of the inner surface 140 forms together with the valve needle ball 20 the sealing edge 40.
  • the portion of the inner surface 140 which forms the sealing edge 40 is a truncated cone surface which tapers in diameter towards the one outlet opening 130.
  • the outlet opening 130 is according to this embodiment formed by a cylindrical surface.
  • the cylindrical surface is arranged coaxially with respect to the central longitudinal axis 30 and is for example manufactured by drilling.
  • the valve seat body 100 further comprises an outer surface 150.
  • the outer surface 150 comprises, according to this embodiment, a flat ring surface 152, a curved ring surface 154 and a cylindrical surface 156.
  • the outer surface 150 extends from the outlet opening 130 along the curved ring surface 145, the flat ring surface 152 and the cylindrical portion 156.
  • the outer surface 150 defines therefore partially the shape of the valve seat body 100.
  • the flat ring surface 152 of the outer surface 150 is arranged further away from the inlet opening 120 in axial direction than the radial inner end of the curved ring surface 154 of the outer surface 150. This means that the curved ring surface 154 forms a depression in the valve seat body 100 next to the outlet opening 130 with respect to the flat ring surface 152.
  • the curved ring surface 154 is a portion of a torus surface. In other words, the profile of the curved ring surface 154 is a section of a circle.
  • the section of the circle forms when rotated by 360° around the central longitudinal axis 30 and when arranged in radial direction away from the central longitudinal axis 30 the curved ring surface 154.
  • the cylindrical portion 156 extends parallel to the central longitudinal axis 30 starting from the radial outer end of the flat ring surface 152 towards the inlet opening 120.
  • the valve seat body assembly 10 shown in fig. 1 further comprises the orifice part 200.
  • the orifice part 200 is arranged at a valve seat body 100 next to the outlet opening 130 of the valve seat body 100.
  • the valve seat body 100 and the orifice part 200 form together a flow space 210 between each other.
  • the orifice part 200 comprises a first surface 220.
  • the first surface 220 is arranged towards the inlet opening 120 of the valve seat body 100.
  • the first surface 220 comprises a flat ring surface 222 and a curved ring surface 224 and a circular surface 226.
  • the flat ring surface 222, the curved ring surface 224 and the circular surface 226 of the first surface are arranged coaxially with respect to the central longitudinal axis 30.
  • the first surface 220 extends from the central longitudinal axis 30 along the circular surface 226, the curved ring surface 224 and the flat ring surface 222.
  • the flat ring surface 222 is in contact with the flat ring surface 152 of the outer surface 150 of the valve seat body 100.
  • the flat ring surface 222 in combination with the flat ring surface 152 of the outer surface defines therefore the axial position of the orifice part 200 at the valve seat body 100.
  • the orifice part 200 further comprises a second surface 230 which comprises a cylindrical surface 232, a truncated cone surface 234 and a spherical surface 236.
  • the orifice part 200 is defined by the first surface 220 and the second surface 230 according to the embodiment shown in fig. 1 .
  • the second surface 230 extends from the central longitudinal axis 30 to the radial outer edge of the flat ring surface 222 of the first surface 220.
  • the cylindrical surface 232, the truncated cone surface 234, and the spherical surface 236 are arranged coaxially with respect to the central longitudinal axis 30.
  • the second surface 230 extends from the central longitudinal axis along the spherical surface 236, the truncated cone surface 234 and the cylindrical surface 232.
  • the spherical surface 236 is arranged tangentially with respect to the truncated cone surface 234.
  • the truncated cone surface 234 tapers in diameter towards the spherical surface 236.
  • the radial outer end of the truncated cone surface 234 is adjacent to the longitudinal end of the cylindrical surface 232 which faces away from the inlet opening 120 of the valve seat body 100. As it can be seen in fig. 1 a rounding is arranged between the cylindrical surface 232 and the truncated cone surface 234.
  • the other longitudinal end of the cylindrical surface 232 which faces towards the inlet opening 120 of the valve seat body 100 is arranged adjacent to the radial outer end of the flat ring surface 222 of the first surface 222.
  • the whole outer surface of the orifice part 200 according to this embodiment is therefore defined by the first surface which comprises the flat ring surface 222, the curved ring surface 224 and the circular surface 226 and the second surface 230 which comprises the cylindrical surface 232, the truncated cone surface 234 and the spherical surface 236.
  • the cylindrical surface 232 is according to this embodiment arranged flush with the cylindrical portion 156 of the outer surface 150 of the valve seat body 100. In other words, the diameter of the cylindrical portion 156 of the valve seat body 100 is the same than the diameter of the cylindrical surface 232 of the orifice part 200.
  • the orifice part 200 as shown in fig. 1 comprises flow holes 240 which extend through the orifice part 200.
  • the inlet openings of the flow holes 240 open into the flow space 210 so that fluid can flow out of the outlet opening 130 of the valve seat body 100 along the flow space 210 and through the flow holes 240.
  • the flow holes 240 can be created or manufactured in the orifice part 200 before the orifice part 200 is fixed to the valve seat body 100. This makes the manufacturing process of the flow holes 240 easier and faster.
  • the inlet openings of the flow holes 240 are placed further away from the central longitudinal axis 30 in radial direction than the sealing edge 40 between the valve needle ball 20 and the inner surface 140 of valve seat body 100. This is only possible due to the reason that the sealing functionality is separated from the spray development functionality. It is therefore in particular simple to adjust the drilling angle of the flow holes 240 with respect to the central longitudinal axis 30 as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
EP20152340.4A 2020-01-17 2020-01-17 Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice Withdrawn EP3851663A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20152340.4A EP3851663A1 (fr) 2020-01-17 2020-01-17 Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20152340.4A EP3851663A1 (fr) 2020-01-17 2020-01-17 Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice

Publications (1)

Publication Number Publication Date
EP3851663A1 true EP3851663A1 (fr) 2021-07-21

Family

ID=69177021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20152340.4A Withdrawn EP3851663A1 (fr) 2020-01-17 2020-01-17 Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice

Country Status (1)

Country Link
EP (1) EP3851663A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004063556A2 (fr) * 2003-01-09 2004-07-29 Siemens Vdo Automotive Corporation Regulation de la repartition de la pulverisation avec des orifices non inclines formes sur un disque de dosage d'injection en carburant a collerette dote d'un reducteur de volume de sac
US20050194458A1 (en) * 2004-03-04 2005-09-08 Siemens Vdo Automotive Corporation Compound-angled orifices in fuel injection metering disc
US20110163187A1 (en) * 2008-09-15 2011-07-07 Robert Bosch Gmbh Valve for atomizing a fluid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004063556A2 (fr) * 2003-01-09 2004-07-29 Siemens Vdo Automotive Corporation Regulation de la repartition de la pulverisation avec des orifices non inclines formes sur un disque de dosage d'injection en carburant a collerette dote d'un reducteur de volume de sac
US20050194458A1 (en) * 2004-03-04 2005-09-08 Siemens Vdo Automotive Corporation Compound-angled orifices in fuel injection metering disc
US20110163187A1 (en) * 2008-09-15 2011-07-07 Robert Bosch Gmbh Valve for atomizing a fluid

Similar Documents

Publication Publication Date Title
CN101680413B (zh) 用于燃料喷射阀的控制阀
US9297344B2 (en) Fuel injection valve for an internal combustion engine
EP0426205B1 (fr) Dispositif de commande d'injecteurs de combustible actionnés électro-hydrauliquement
US6684857B2 (en) Common rail fuel injector for internal combustion engines, as well as a fuel system and an internal combustion engine incorporating the injector
JP4194564B2 (ja) 噴射ノズル
JP2003506626A (ja) 燃料噴射弁及び、弁の吐出開口を製造するための方法
US20060081722A1 (en) Gaseous fuel injector for internal combustion engine
US20170321636A1 (en) Gas injector including an outwardly opening valve closure element
CN101529080B (zh) 用于将燃料喷入内燃机燃烧室中的喷射器
EP2905457B1 (fr) Ensemble de soupape et injecteur de fluide pour moteur à combustion
JP2009275646A (ja) 燃料噴射ノズル
US20040046062A1 (en) Needle alignment fuel injector
EP3851663A1 (fr) Ensemble corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne comportant un corps de siège de soupape et une partie d'orifice
JP2004519604A (ja) 半径方向の切欠きを備えた弁
EP1811166B1 (fr) Ensemble à vanne pour une soupape d'injection et soupape d'injection
JP2007231771A (ja) 燃料噴射弁
EP2282042B1 (fr) Ensemble de soupape et soupape d'injection
EP2896811B1 (fr) Ensemble de buse et soupape d'injection de carburant pour moteur à combustion interne
US7243902B2 (en) Pressure-compensated, directly controlled valve
EP1482170B1 (fr) Buse d'injecteur avec injection améliorée et procédé de fabrication
JP2002507695A (ja) 燃料噴射弁
EP1857669B1 (fr) Injecteur de carburant
US20200386199A1 (en) Valve for metering a fluid
EP3783220A1 (fr) Corps de siège de soupape pour un injecteur de fluide d'un moteur à combustion interne
CN113167203A (zh) 燃料喷射阀

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VITESCO TECHNOLOGIES GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220122