EP2788613B1 - Einspritzventil, insbesondere für eine brennkraftmaschine - Google Patents

Einspritzventil, insbesondere für eine brennkraftmaschine Download PDF

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Publication number
EP2788613B1
EP2788613B1 EP12797869.0A EP12797869A EP2788613B1 EP 2788613 B1 EP2788613 B1 EP 2788613B1 EP 12797869 A EP12797869 A EP 12797869A EP 2788613 B1 EP2788613 B1 EP 2788613B1
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EP
European Patent Office
Prior art keywords
sealing element
valve housing
sealing
injection valve
inlet
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.)
Active
Application number
EP12797869.0A
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German (de)
English (en)
French (fr)
Other versions
EP2788613A1 (de
Inventor
James PATCHETT
Rainer Haeberer
Andreas Kerst
Helko KLINGER
Ulrich Meingast
Elvis Spahic
Julian Lillich
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of EP2788613A1 publication Critical patent/EP2788613A1/de
Application granted granted Critical
Publication of EP2788613B1 publication Critical patent/EP2788613B1/de
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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet

Definitions

  • the invention relates to an injection valve, in particular for an internal combustion engine of a motor vehicle, having a valve housing, from which an inlet connection with an inlet region projects into a fluid inlet chamber formed by the valve housing together with a connection cap enclosing the valve housing in the circumferential direction, wherein - viewed in the radial direction the inlet nozzle and the connecting cap there is a flow path which is closed by means of a sealing element which engages directly around the inlet nozzle and is in contact with it.
  • the DE 10 2009 026 532 A1 shows an injection valve for a fluid.
  • this injection valve even after the connection cap has been applied, it may happen that moisture from an environment of the injection valve penetrates between the injection-side inlet connection and the valve housing, in which there is also a connection plug for the electrical contacting. This moisture may subsequently migrate through the injector and possibly lead to malfunction.
  • the ingress of moisture mainly occurs when the injection valve is flooded or submerged in water or the like. This is the case, in particular, when the injection valve is installed on an underbody of the motor vehicle.
  • a thermal shock can additionally be triggered, which further enhances the effect caused by the moisture.
  • injection valve has at his Inlet though via an O-ring. However, this only serves to seal a present after application of the connection cap via the inlet port fluid inlet chamber with respect to the surroundings of the injection valve. It can not prevent moisture from entering between the inlet port and the valve body.
  • a fuel injection valve which has at its inlet end an inlet inlet, on the outer circumference at least two sealing rings, which serve to seal the fuel injection valve relative to a valve seat, are provided.
  • the two sealing rings are axially spaced apart by an intermediate ring in each case in an annular chamber.
  • the intermediate ring is independent of the inlet nozzle and made in two parts.
  • DE 10 2011 006 500 A1 a device for metering a medium having a valve with an inlet for the medium and a housing portion close to the inlet and axially seated on a housing-fixed contact shoulder sealing ring made of elastically deformable material and acted upon by the medium connecting member for the medium flow to the valve a the inlet-close housing portion under radial clamping of the sealing ring receiving cup.
  • the valve housing is at least partially enclosed by a Kunststoffumspritzung with an abutment shoulder for the sealing ring forming end face.
  • JP 2003-49748 A an injection valve for an internal combustion engine.
  • the injection valve with the features mentioned in claim 1 has the advantage that penetration of moisture between the inlet nozzle and the valve housing is effectively prevented.
  • the sealing element is in permanent sealing contact with the valve housing, wherein on the connection cap at least one inclined surface is provided, against which the sealing element sealingly abuts, and wherein the inclined surface of the connection flap standing with the sealing element in touching contact support surface in the radial direction partially overlaps.
  • the injection valve presented here is usually used for introducing fluid, in particular fuel, into the internal combustion engine or its combustion chambers.
  • the internal combustion engine is for example part of the motor vehicle.
  • the injection valve may alternatively be used to introduce a liquid reducing agent, for example a urea-water solution, into an exhaust tract.
  • the injection valve consists among other things of the valve housing, the inlet nozzle and the connection cap.
  • the injection valve has an inlet side and an outlet side, wherein usually the inlet side is arranged in the axial direction on the side of the injection valve opposite to the outlet side.
  • the injection valve may be formed, for example, as a top-feed injection valve.
  • the valve housing preferably surrounds the inlet connection in the circumferential direction completely.
  • the inlet nozzle is encompassed directly by the valve housing, so it is in touching contact with this.
  • the valve housing is spaced in the radial direction from the inlet nozzle.
  • On the inlet side of the inlet nozzle is on the valve body over, so protrudes from this with its inlet area.
  • the inlet area is accordingly no longer encompassed by the valve housing.
  • the inlet portion protrudes into the fluid inlet chamber, which is formed by the valve housing and / or the inlet nozzle together with the connection cap.
  • the connection cap surrounds, for example, the valve housing in the circumferential direction at least in regions.
  • the terminal cap substantially completely covers the valve housing and the inlet port on the inlet side of the injection valve, so that the fluid inlet chamber is formed.
  • the fluid is introduced, which is introduced by means of the injection valve, in particular injected, to be.
  • the fluid is introduced, for example, through a connection opening of the connection cap in the fluid inlet chamber.
  • the connection cap can be a separate component to which a fluid line is connected.
  • the connection cap can also be formed by another element, for example the internal combustion engine, which has a recess into which the injection valve or its inlet connection is introduced together with at least one region of the valve housing during assembly of the injection valve. If the connection cap is mentioned below, such an element is always meant analogously.
  • connection cap After the attachment of the connection cap to the valve housing, there is a flow path between the inlet connection and the connection cap, viewed in the radial direction. Because the connection cap usually bears sealingly against the valve housing, this flow path is already at least partially closed. However, this is often not sufficient to prevent the ingress of moisture from the environment of the injection valve, in particular between the inlet nozzle and the valve housing. For this reason, the sealing element is provided in the flow path, which surrounds the inlet nozzle. In this case, not necessarily an immediate encompassing provided, but the sealing element may be present in the radial direction either directly to the inlet port or its inlet region or be spaced therefrom, so that there is only an indirect encompassing.
  • the sealing element In order to ensure reliable sealing against moisture from the environment of the injection valve, the sealing element should be in permanent sealing contact with the valve housing. This is to understand that even with relative movements (for example, caused by fluctuations in operation, pressure pulsations and / or thermal expansion) between the valve housing and inlet nozzle or when installing several injection valves always the sealing contact should be present in a consistent manner.
  • the injection valve is thus designed such that, for example, a different procedure during assembly of the injection valve or permissible assembly tolerances can not lead to the fact that there is no sealing contact between the sealing element and the valve housing.
  • the flow path can be present between the inlet region of the inlet nozzle and the connection cap, the flow path being limited by these elements in the radial direction.
  • the flow path is thus bordered directly by the inlet region of the inlet nozzle and the connection cap in the radial direction and thus limited.
  • the sealing element can now be arranged directly encompassing the inlet nozzle or its inlet region, so that the flow path is closed. In this case, the sealing element is arranged in the axial direction such that the permanent sealing contact with the valve housing is present.
  • the flow path may also be present between the valve housing and the connection cap.
  • the flow path is limited here in the radial direction of the valve housing and the connection cap. It is normally at least partially closed by the sealing engagement of the terminal cap on the valve housing.
  • the sealing element should additionally be provided, which is correspondingly present in the radial direction directly between the valve housing and the connection cap.
  • the sealing element surrounds the inlet nozzle here only indirectly, so it is spaced in the radial direction of this, in particular by the valve housing. Rather, it is directly on the valve body and in addition to the connection cap.
  • At least one inclined surface is provided on the valve housing and / or the connection cap, against which the sealing element bears in a sealing manner.
  • the oblique surface is to be understood as an area which, for example, is set at a nonzero angle relative to a radial direction.
  • the oblique surface is accordingly at the angle to the longitudinal axis of the injection valve or to a parallel to this straight line at an angle of not equal to 90 °.
  • the inclined surface is preferably oriented such that the space available to the sealing element, in particular in the radial direction, the smaller, the further it is urged in the direction of the valve housing.
  • the inclined surface can be provided either on the valve housing or on the connection cap or both. If the inclined surface on the valve housing, so it represents a sealing surface of the valve housing, with which the sealing element is in permanent sealing contact.
  • the inclined surface is provided in particular in the first embodiment of the injection valve.
  • the inclined surface of the connection cap is intended to partially overlap a supporting surface which is in touching contact with the sealing element in the radial direction. If the oblique surface is provided on the connection cap, then the oblique surface overlaps the support surface in the radial direction at least in regions. Usually, the inclined surface and the support surface are offset from each other in the axial direction. Between the inclined surface and the support surface is now the sealing element.
  • the support surface here represents the above-mentioned sealing surface of the valve housing.
  • the support surface is, for example, in a plane which is perpendicular to the longitudinal axis of the injection valve. However, it can also be designed as an inclined surface.
  • a development of the invention provides that the sealing element is urged in the direction of the valve housing. In this way, the sealing effect between the sealing element and the valve housing can be improved.
  • the urging of the sealing element takes place in particular in the axial direction, so that the sealing element in the axial direction on the Valve body is urged to or pressed onto a portion of the valve housing.
  • the sealing element is urged by the inlet nozzle in the direction of the valve housing.
  • the sealing element is urged inwards in the radial direction, so that it enters the valve housing. This can be effected for example by a spring action of the connection cap.
  • connection cap consists at least partially of an elastic or resilient material which is deformed outwards in the radial direction during the assembly of the sealing element. Subsequently, it tries to return by its spring action in its initial position, whereby the sealing element is urged in the radial direction inwardly on the valve housing.
  • connection cap has a contact surface corresponding to the oblique surface, which urges the sealing element in the direction of the valve housing.
  • the sealing element can be urged by the inlet nozzle in the direction of the valve housing.
  • the radial projection is provided at the inlet region, which is in particular present on its inlet side at the end and on which the contact surface is provided.
  • the contact surface is in permanent contact with the sealing element and urges this in the direction of the valve housing.
  • the contact surface can also be present on the connection cap. This is the case in particular in the second embodiment explained above.
  • the provided on the connection cap contact surface can also be used to urge the sealing element in the axial direction of the valve housing or the support surface.
  • the support surface and the contact surface are substantially opposite in the axial direction. They are in particular designed parallel to each other.
  • the sealing element is an O-ring.
  • the O-ring is a circumferentially continuous annular sealing element. It is inexpensive and does not have to be specially tailored to the geometry of the injector.
  • the O-ring is placed on the inlet port or its inlet area applied and occurs after attaching the connection cap with this in touch contact or sealing contact.
  • the present as an O-ring sealing element is provided in particular in the first embodiment of the injection valve.
  • the sealing element is present as a molded seal and having a sealing arm, with which the sealing element is supported on the contact surface.
  • the molded seal is matched to the geometry of the injector and deviates from the ring shape of the O-ring.
  • the molded seal consists of a base body from which at least one sealing arm extends in at least one direction.
  • a respective sealing arm is provided in the radial direction pointing inwards and outwards.
  • sealing arms can extend in the axial direction both in the direction of the inlet side and in the direction of the outlet side.
  • At least one sealing arm in each case extends in the radial direction inwards and outwards and in the axial direction towards the inlet side and towards the outlet side.
  • more than one sealing arm can also be provided on at least one side.
  • the sealing arm or at least one of the sealing arms is intended to come into touching contact with the contact surface, that is to say in particular the inlet region or the connection cap, and to urge the sealing element in the direction of the valve housing or at least fix it in the axial direction.
  • a development of the invention provides that the sealing element additionally closes a second flow path present in the radial direction between the valve housing and the inlet connection.
  • the second flow path is seen in the radial direction directly between the valve housing and the inlet nozzle, is thus limited by this in the radial direction.
  • a development of the invention provides that - seen in the radial direction - between the valve housing and the connection cap, a second sealing element is provided.
  • the second sealing element lies in particular in the first embodiment of the injection valve before. However, it may also be provided in the second embodiment, wherein in this case in particular two equal in the axial direction spaced-apart sealing elements are present. With the aid of the second sealing element, the sealing effect for closing the flow path or the second flow path is improved.
  • the sealing element and / or the second sealing element is present as a labyrinth sealing element which has at least one sealing finger extending from a sealing base body in the direction of the valve housing or the connecting cap.
  • the sealing element is formed in particular in the second embodiment as a labyrinth seal member.
  • the labyrinth seal element consists of the seal base body and the at least one sealing finger. This sealing finger extends in the direction of the valve housing or the connection cap. He stands on the seal body, usually in the radial direction, over.
  • a plurality of sealing fingers spaced apart in the axial direction are provided. In this way, the same sealing effect is achieved as with a plurality of spaced apart in the axial direction of sealing elements. Accordingly, the sealing effect of the sealing element or the second sealing element is significantly increased.
  • the FIG. 1 shows a partially sectioned side view of an injection valve 1 in a non-inventive embodiment.
  • the injection valve 1 is used for introducing a fluid, for example in a combustion chamber of an internal combustion engine, not shown here.
  • the injection valve 1 has an inlet side 2 and an outlet side 3.
  • the fluid is supplied to the injection valve 1 through the connection opening 4 via the fluid line.
  • the outlet side 3 the fluid can exit through an outlet opening (not shown here) when the injection valve 1 is actuated accordingly.
  • the injection valve 1 is mounted in a recess 5 of a housing 6, which is assigned for example to the internal combustion engine.
  • a seal 8 for sealing the recess 5 on the outlet side 3 of the injection valve 1 with respect to an environment 7 of the injection valve 1, a seal 8, here in the form of an O-ring, is provided.
  • the injection valve 1 has a valve housing 10 with an inlet-side end face 11.
  • the valve housing 10 forms with a connection cap 12 a fluid inlet chamber 13.
  • the fluid inlet chamber 13 is in fluid communication with the connection opening 4 and correspondingly with the fluid line. This means that the fluid can be introduced into the fluid inlet chamber 13 through the connection opening 4.
  • an inlet port 14 is provided which extends into an inlet region 15 into the fluid inlet chamber 13.
  • the inlet port 14 is thus in the axial direction with its inlet region 15 (With respect to a longitudinal axis 16 of the injection valve 1) on the inlet side 2 via the valve housing 10 and its end face 11 via.
  • connection cap 12 When mounting the injection valve 1, the connection cap 12 is arranged such that it completely surrounds a region of the valve housing 10 in the circumferential direction. Subsequently, it is fastened to the valve housing 10 by means of a holding element 17, which cooperates positively with both the valve housing 10 and the connection cap 12.
  • a flow path 18 is now present between the inlet connection 14 or its inlet region 15 and the connection cap 12. This is closed by means of a sealing element 19.
  • the sealing element 19 engages around the inlet port 14 or its inlet region 15 directly, that is in contact with it.
  • the flow path 18 in this embodiment is bounded on one side by the inlet region 15 of the inlet nozzle 14 and on the other side by the connection cap 12 in the radial direction.
  • This flow path 18 is now closed by means of the sealing element 19.
  • the sealing element 19 is present for example as an O-ring.
  • the sealing element 19 is not permanently in sealing contact with the valve housing 10, but only with the inlet portion 15 and the cap 12. As far as moisture from the environment 7 of the injector 1 through an opening 20 between the valve housing 10 and the Inlet port 14 arrive. This occurs in particular during humidification or immersion of the injection valve 11. The humidity may subsequently lead to malfunction of the injection valve 1. For this reason, the opening 20 should be permanently closed. This is achieved by the sealing element 19 is in permanent sealing contact with the valve housing 10. This is done by in the FIG. 1 described variant of the injection valve 1 achieved. In this, the sealing element 19 is permanently urged in the direction of the valve housing 10. This is achieved by the inlet region 15 of the inlet nozzle 14 having a contact surface 21 which urges the sealing element 19 in the direction of the valve housing 10.
  • the contact surface 21 projects, for example, against a radial projection which is provided on the inlet connection 14 on the inlet side.
  • the sealing element 19 is urged in the direction of a sealing surface 22, which is formed on the valve housing 10.
  • the sealing element 19 is held clamped so far between the contact surface 21 and the sealing surface 22.
  • the sealing element 19 has such dimensions in the radial direction that it rests both sealingly on the inlet pipe 14, and on the connection cap 12. At the same time there is now a sealing contact between the sealing element 19 and the valve housing 10. In this way, moisture is prevented from penetrating through the opening 20 into the injection valve 1 or between the valve housing 10 and the inlet connection 14.
  • the sealing effect of the sealing element 19 can be improved by the sealing surface 22 is formed as an inclined surface 23.
  • the inclined surface 23 is tilted with respect to a plane perpendicular to the longitudinal axis 16, so that it is not completely in or parallel to this. Rather, the inclined surface 23 or a receiving this level includes with the longitudinal axis 16 an angle of not equal to 90 °.
  • FIG. 2 shows a detailed section of the inlet side 2 of the injection valve 1.
  • the embodiment shown here corresponds to the basis of FIG. 1 described, so that reference is made to the above statements.
  • the inlet port 14 is fixed in the axial direction by means of a rear handle 24 with respect to the valve housing 10.
  • another attachment of the inlet nozzle 14 with respect to the valve housing 10 may be provided. With the aid of such a fastening of the inlet nozzle 14 is arranged with respect to the valve housing 10 such that the sealing element 19 is urged in the direction of the valve housing 10 or clamped between the contact surface 21 and the sealing surface 22 is held.
  • FIG. 3 shows a second embodiment of the injection valve according to the invention 1.
  • the sealing surface 22 is not present in the form of the inclined surface 23, but rather lies substantially in a plane which is perpendicular to the longitudinal axis 16.
  • the contact surface 21 is formed as an inclined surface 25.
  • the inclined surface 25 is so far on the connection cap 12 before.
  • the inclined surface 25 engages over the now serving as a support surface 26 sealing surface 22 in the radial direction at least partially, but is spaced in the axial direction to this. In this way, the sealing element 19 is held in the axial direction between the inclined surface 25 and the support surface 26 by clamping.
  • connection cap 12 By applying the connection cap 12 to the valve housing 10 during assembly of the injection valve 1, the sealing element 19 is accordingly set substantially in the axial direction. It is now in permanent sealing contact with the valve housing 10 and the sealing surface 22. In this way, the opening 20 relative to the environment 7 of the injection valve 1 is reliably sealed.
  • the FIG. 4 shows a non-inventive further embodiment of the injection valve 1.
  • the sealing element 19 is present here as a molded seal. It has a sealing arm 27 which, starting from a sealing base body 28, extends in the axial direction against the contact surface 21 which is now present on the connection cap 12.
  • the contact surface 21 and the sealing surface 22 may be substantially parallel to each other. However, other embodiments could be provided, for example, as inclined surfaces.
  • FIG. 5 shows a not inventive further embodiment of the injection valve, which of the basis of the FIG. 4 featured resembles. Accordingly, reference is made to the above statements.
  • the sealing arm 27 is now arranged such that it serves to urge the sealing element in the direction of the valve housing 10 with the contact surface 21, which in turn is present on the inlet connection 14.
  • Sealing element 19 and the seal arm 27 already made with a corresponding shape.
  • the according to the FIG. 4 formed seal arm 27 is bent during assembly of the injection valve 1, so that it generates a spring force caused by its elastic design, which urges the sealing element 19 in the direction of the valve housing 10 and the end face 11 thereof. In this way, a particularly good sealing effect between the sealing element 19 and the valve housing 10 is achieved.
  • FIG. 6 shows a not inventive fifth embodiment of the injection valve 1.
  • the basis of the FIGS. 1 to 5 described embodiments of the injection valve 1 have in common that the flow path 18 in the radial direction of the inlet region 15 and the connection cap 12 is limited. This corresponds to a first embodiment of the injection valve 1.
  • a second embodiment, according to the fifth embodiment of the injection valve 1, will now be described with reference to FIG FIG. 6 to be discribed.
  • a flow path 29 is only indirectly between the inlet port 14 and the connection cap 12. Rather, it is limited in the radial direction directly from the valve housing 10 and the connection cap 12.
  • a sealing element 30 is now provided for closing the flow path 29.
  • This sealing element 30 is as well as the sealing element 19 described above in permanent sealing contact with the valve housing 10. For this purpose, it is urged by the connection cap 12 in the radial direction (with respect to the longitudinal axis 16) inwardly in the direction of the valve housing 10.
  • the sealing element 30 is present as a labyrinth seal element which, starting from a sealing base body 31, has sealing fingers 32 extending.
  • the sealing fingers 32 point inwards in the radial direction and project beyond the sealing base body 31.
  • the sealing fingers 32 may also extend in the direction of the connection cap 12 or alternately in the direction of the two. They are in contact with the valve housing 10 for producing the permanent sealing contact.
  • the sealing element 30 lies preferably as a second sealing element, in addition to the sealing element 19 before.
  • the sealing element 19 may be arranged either according to the above embodiments, or, as in the FIG. 6 shown to be spaced from the valve housing 10 in a conventional manner.
  • the sealing element 19 is in permanent sealing contact with the valve housing 10.
  • the necessary sealing effect which prevents penetration of moisture through the opening 20, is already achieved by means of the sealing element 30. So it can either only the sealing element 19 according to the FIGS. 1 to 5 , Only the sealing element 30 or - particularly preferably - both the sealing element 19 in the arrangement described above and the sealing element 30 may be provided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP12797869.0A 2011-12-08 2012-12-03 Einspritzventil, insbesondere für eine brennkraftmaschine Active EP2788613B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110087954 DE102011087954A1 (de) 2011-12-08 2011-12-08 Einspritzventil, insbesondere für eine Brennkraftmaschine
PCT/EP2012/074254 WO2013083522A1 (de) 2011-12-08 2012-12-03 Einspritzventil, insbesondere für eine brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP2788613A1 EP2788613A1 (de) 2014-10-15
EP2788613B1 true EP2788613B1 (de) 2018-06-20

Family

ID=47297241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12797869.0A Active EP2788613B1 (de) 2011-12-08 2012-12-03 Einspritzventil, insbesondere für eine brennkraftmaschine

Country Status (4)

Country Link
EP (1) EP2788613B1 (zh)
CN (1) CN103975158B (zh)
DE (1) DE102011087954A1 (zh)
WO (1) WO2013083522A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9366167B2 (en) 2013-11-08 2016-06-14 Continental Automotive Systems, Inc. Injector water intrusion seal with blow out volume
DE102015223440A1 (de) * 2015-11-26 2017-06-01 Robert Bosch Gmbh Dichtelement und Kraftstoffinjektor mit einem Dichtelement
ITUB20161107A1 (it) * 2016-02-26 2017-08-26 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
DE102017207091A1 (de) * 2016-06-30 2018-01-04 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids, Anschlussstück für ein Ventil und Brennstoffeinspritzanlage
DE102020213354A1 (de) * 2020-10-22 2022-04-28 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffeinspritzventil

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Publication number Priority date Publication date Assignee Title
DE3428597C2 (de) * 1984-08-02 1986-11-27 Bayerische Motoren Werke AG, 8000 München Verbindung zweier koaxial hintereinander angeordneter Rohrabschnitte, insbesondere einer Einspritzdüse mit dem koaxial angeordneten Anschlußstutzen einer Einspritzleitung
DE19939132A1 (de) * 1999-08-18 2001-02-22 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10056038A1 (de) * 2000-11-11 2002-05-16 Bosch Gmbh Robert Brennstoffeinspritzanlage
DE10106168A1 (de) * 2001-02-10 2002-08-14 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Montage eines Brennstoffeinspritzventils in einer Ventilaufnahme
JP2003049748A (ja) * 2001-08-08 2003-02-21 Keihin Corp 燃料分配管への燃料噴射弁接続構造
EP1523619A1 (de) * 2002-07-12 2005-04-20 Robert Bosch Gmbh Brennstoffeinspritzventil und verfahren zur montage eines brennstoffeinspritzventils in einer ventilaufnahme
JP2005248846A (ja) * 2004-03-04 2005-09-15 Bosch Automotive Systems Corp 燃料通路のシール構造及びそのシール構造を備えた燃料噴射弁
JP2005248847A (ja) * 2004-03-04 2005-09-15 Bosch Automotive Systems Corp 燃料通路のシール構造及びそのシール構造を備えた燃料噴射弁
DE102009026532A1 (de) 2009-05-28 2010-12-02 Robert Bosch Gmbh Einspritzventil für ein Fluid
DE102011006500A1 (de) * 2011-03-31 2012-10-04 Robert Bosch Gmbh Vorrichtung zum Zumessen eines Mediums

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Publication number Publication date
CN103975158A (zh) 2014-08-06
CN103975158B (zh) 2016-12-28
EP2788613A1 (de) 2014-10-15
WO2013083522A1 (de) 2013-06-13
DE102011087954A1 (de) 2013-06-13

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