DE102010030925A1 - Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream a valve opening that stands in connection with medium inflow - Google Patents

Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream a valve opening that stands in connection with medium inflow

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Publication number
DE102010030925A1
DE102010030925A1 DE201010030925 DE102010030925A DE102010030925A1 DE 102010030925 A1 DE102010030925 A1 DE 102010030925A1 DE 201010030925 DE201010030925 DE 201010030925 DE 102010030925 A DE102010030925 A DE 102010030925A DE 102010030925 A1 DE102010030925 A1 DE 102010030925A1
Authority
DE
Germany
Prior art keywords
valve
magnetic core
valve seat
metering
characterized
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.)
Pending
Application number
DE201010030925
Other languages
German (de)
Inventor
Ferdinand Reiter
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
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE201010030925 priority Critical patent/DE102010030925A1/en
Publication of DE102010030925A1 publication Critical patent/DE102010030925A1/en
Application status is Pending legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066Selective catalytic reduction [SCR]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/02Adding substances to exhaust gases the substance being ammonia or urea
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/14Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/14Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486Means to prevent the substance from freezing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/20Exhaust after-treatment
    • Y02T10/24Selective Catalytic Reactors for reduction in oxygen rich atmosphere

Abstract

The invention relates to a valve for a flowing medium, in particular a metering valve for metering a freezable liquid, which has a valve chamber (12) connected upstream of a valve opening (11) and communicating with a fluid inlet (13), a valve chamber (12). extending through the valve needle (14) for controlling the valve opening (11) and an electromagnet (16) with a valve needle (14) attached to the valve chamber (12) limiting armature (17) and with the magnetic tanker (17) aligned magnetic core (18). To produce the freezer capability of the valve in the sense of avoiding damage to the valve during freezing of the medium, the magnetic core (18) is axially displaceable and by means of an elastically deformable element, which is preferably designed as a spring element (34), to a first axial stop ( 33) pressed.

Description

  • State of the art
  • The invention is based on a valve for a flowing medium, in particular a metering valve for metering a freezable liquid, according to the preamble of claim 1.
  • In the exhaust aftertreatment of internal combustion engines, a urea-water solution is injected by means of a metering valve in metered quantities into the exhaust gas to reduce nitrogen oxides. Due to the high proportion of water, the solution under pressure during operation of the internal combustion engine freezes below zero even at low temperatures. The solution present in the dosing valve expands during freezing and damages the valve, rendering it inoperative.
  • To counter this, a known, freezer-suitable metering valve for injecting a urea-water solution ( DE 10 2004 025 062 B4 ) on a separate hydraulic part of a hydraulic part with a housing and a valve chamber formed therein, on the one hand bounded by a valve seat and on the other hand is closed by an elastic, annular membrane. The membrane is fixed in each case liquid-tight with its outer edge in the valve housing and with its inner edge on a cooperating with the valve seat for releasing and closing a valve opening, driven by the solenoid valve needle. In the valve chamber opens an inlet for the pressurized urea-water solution. When freezing the solution, the elastic membrane provides by expansion a volume compensation space, so that the valve is not damaged by the increasing volume of existing in the metering valve amount of urea-water solution. In dosing, the fluid pressure in the valve chamber acts on the elastic diaphragm, whereby a directed against the spring force of the valve closing spring displacement force is generated on the valve lifter. Since the valve is sealed by the adjustment of the closing force of the valve closing spring and the magnetic force of the electromagnet, this displacement force generated by the fluid pressure in the valve chamber causes the valve to securely close and open only in a narrow pressure range for a given maximum magnetic force ,
  • A known fuel or fuel injection valve ( DE 199 32 763 A1 ) has a pot-shaped valve housing, in which a sleeve-shaped valve seat carrier is fixed. The valve seat carrier protrudes axially from the valve housing and is closed at its end facing away from the valve housing with a valve seat body in which a valve opening is formed with a circumferential valve seat. A centrally in the valve seat carrier extending valve needle is provided at its valve seat body end facing with a closing member which cooperates with the valve seat for controlling the valve opening. At the end facing away from the closing member, the valve needle is fastened to a hollow cylindrical magnet armature, which is displaceably guided in the valve seat carrier, of an electromagnet arranged in the valve housing. On the valve seat carrier, a solenoid coil of the electromagnet is pushed, and in the valve seat carrier, a hollow cylindrical magnetic core of the electromagnet is used, which closes together with the serving as a magnetic return valve housing the magnetic circuit via the armature and a present between the magnetic tanker and magnetic core working air gap. The armature is loaded with a valve closing spring, and the hollow interior of the magnetic core and armature is in communication with a fuel supply. The supplied via the fuel flow under system pressure fuel flows through at least one held in the armature radial or oblique bore in the limited valve seat carrier, armature and valve seat body valve chamber. By energizing the solenoid, the valve needle lifts with its closing member against the closing force of the valve closing spring more or less far from the valve seat, and a metered amount of fuel is sprayed through the valve opening. Even a valve constructed in this way is used as a metering valve for metering a urea-water solution, but is less suitable for freezing.
  • Disclosure of the invention
  • The valve according to the invention with the features of claim 1 has the advantage that in production technology simple way in the valve a compensation chamber for the freezing medium is available, so that during freezing no damaging ice pressure charged the components in the valve. Due to the resulting increase in freezing volume of the present in the valve chamber medium and thereby acting on the armature, increasing ice pressure, the magnetic core is axially displaced via the armature under elastic deformation of the elastically deformable element, whereby the valve chamber increases in volume and the freezing medium There is room to stretch. After the medium has thawed, the magnet core is pressed against the first axial stop by the elastically deformed element, and the magnet armature displaced thereby restores the original volume of the valve chamber. Since this structural measure to achieve the Gefriertauglichkeit the valve does not interfere with the functional chain of the valve, the vote remains Magnetic force of the electromagnet and the spring force of the normally existing valve closing spring untouched, so that the valve can safely close and open in a large pressure range.
  • The measures listed in the further claims advantageous refinements and improvements of the claim 1 valve are possible.
  • According to an advantageous embodiment of the invention, the elastically deformable element is a prestressed spring element, which is supported between the front of the magnet core facing away from the magnetic core and a second axial stop. Such a spring element, which may be a cylindrical helical compression spring, a plate spring or a plate spring package with several superimposed disc springs, is robust and inexpensive.
  • According to an advantageous embodiment of the invention, the spring element to a biasing force which is slightly larger than the pressure exerted during operation of the valve by the medium pressure on the assembly of armature and valve needle pressure force. By this design of the biasing force of the spring element, the valve remains in its operating function and influences, so that no restrictions on the pressure range in which the valve closes safely during operation must be accepted.
  • According to an advantageous embodiment of the invention, the valve opening is formed with a circumferential valve seat in a valve seat body which closes a tubular valve seat carrier at one end. Magnetic armature and magnetic core are arranged axially aligned in the valve seat carrier. The first axial stop for the magnet armature is likewise arranged in the valve seat carrier, while the second axial stop is arranged on an extension sleeve which dips into the valve seat carrier and is fixed immovably to the valve seat carrier. For this purpose, the valve seat carrier advantageously has at its end remote from the valve seat body a larger diameter pipe section, which accommodates the immersion section of the extension sleeve. The first axial stop for the armature is formed by the present at the transition to the larger diameter pipe section of the valve seat carrier oblique and Geradschulter and the second stop of the front end of the extension sleeve. By these measures, the two axial stops for magnetic core and spring element can be realized with low production costs.
  • Short description of the drawing
  • The invention is explained in more detail in the following description with reference to an embodiment shown in the drawing. The single figure shows a detail of a longitudinal section of a valve for a flowing medium.
  • The sketched in the drawing valve for a flowing medium is preferably used as a metering valve for metering a freezable liquid in the exhaust pipe of an internal combustion engine. Such a liquid is z. B. a urea-water solution. The valve has a valve opening 11 and one of the valve opening 11 upstream, medium-filled valve chamber 12 on that with a medium inflow 13 communicates. The medium inflow 13 is realized in the drawing by an arrow indicating the direction of flow. To control the valve opening 11 extends an electromagnetically actuated valve needle 14 through the valve chamber 12 therethrough. The valve needle 14 is hollow and at its the valve opening 11 facing needle end with a closing head 15 completed. The valve needle 14 actuating electromagnet 16 has one with the valve needle 14 z. B. by the weld 25 firmly connected, hollow cylindrical magnet armature 17 , one with the magnet armature 17 aligned, hollow cylindrical magnetic core 18 , sometimes called inner pole, an annular solenoid 19 , which partly have magnetic core 18 and magnet armature 16 extends, and a magnet pot 20 , sometimes called Außenpol, on, with a larger diameter pot section 201 the magnetic coil 19 surrounds and with a smaller diameter pot section 202 a magnetic conclusion to the armature 17 manufactures. Between the annular end faces of magnetic core 18 and magnet armature 17 is the working air gap 21 of the electromagnet 16 locked in.
  • The valve opening 11 is with a circumferential valve seat 22 on a valve seat body 23 formed, the a tubular valve seat carrier 24 at one end closes. The valve opening 11 is usually still a spray perforated disk 37 downstream, which has at least one of the sake of clarity here not shown injection hole and on the valve seat 22 abgekehrten end face of the valve seat body 23 is present and attached to this, preferably welded. armature 17 and magnetic core 18 are in the valve seat carrier 24 arranged and the magnetic coil 19 on the valve seat carrier 24 postponed and committed to this. The valve seat carrier 24 indicates its from the valve seat body 23 opposite end a Rohrendabschnitt 241 with a larger inner diameter. In this pipe end section 241 dives an extension sleeve 26 one in the submersion area with the valve seat carrier 24 by means of a circumferential weld 27 is firmly connected. At the valve seat carrier 24 facing away from the extension sleeve 26 is the medium inflow 13 educated. To the extension sleeve 26 to a part of the from the larger diameter pot section 201 of the magnet pot 20 protruding valve seat carrier 24 and a part of the larger diameter pot section 201 is a plastic jacket 32 overmolded, in which also a connector, not shown here for the solenoid coil 19 is integrated. Plastic sheath 32 and magnet pot 20 form the valve housing 31 in which the valve seat carrier 24 is fixed and from which the valve seat carrier 24 on the side of the smaller diameter pot section 202 of the magnet pot 20 projects axially. That about the inflow of media 13 in the extension sleeve 26 inflowing medium passes over the hollow cylindrical magnetic core 18 , the hollow cylindrical magnet armature 17 and the hollow valve needle 14 in the area of the valve chamber 12 wall openings 28 has, in the valve chamber 12 in the valve seat carrier 24 of valve seat body 23 and magnet armature 17 is limited. The one with the valve seat 22 for controlling the valve opening 11 cooperating closing head 15 the valve needle 14 is by means of a valve closing spring 29 on the valve seat 22 pressed and with excitation of the solenoid 19 against the restoring force of the valve closing spring 29 more or less from the valve seat 22 lifted, creating a predetermined amount of in the valve chamber 12 under system pressure medium via the valve opening 11 is hosed. The trained as a compression spring valve closing spring 29 is in the hollow cylindrical magnetic core 18 arranged and extends partially into the hollow cylindrical armature 17 into it, around here at the front end of the hollow cylindrical valve needle 14 support. By means of one in the magnetic core 18 specified, z. B. pressed or screwed adjusting member 30 , at which the other spring end of the valve closing spring 29 is supported, the closing force of the valve closing spring 29 set.
  • To establish the freezer capability of the valve is the magnetic core 18 arranged axially displaceable and by means of an elastically deformable element at a first axial stop 33 pressed. The elastically deformable element is here a prestressed spring element 34 that is between the magnet armature 17 Abgewandten front end of the magnetic core 18 and a second axial stop 35 supported. The biasing force of the spring element 34 is set so that it is greater than that in the metering operation of the valve when the magnet armature hits 17 - or the unit of magnet armature 17 and valve needle 14 - on the magnetic core 18 on the latter acting impact force. This ensures that the magnet armature 18 does not shift in the dosing operation and thereby does not distort the dosing rate of the medium sprayed off via the valve opening. In the illustrated embodiment, the spring element 34 as a plate spring package 36 educated. But it can also be a correspondingly strong single disc spring or a cylindrical helical compression spring. The first axial stop 33 is in the valve seat carrier 24 arranged and from one at the transition to the larger diameter pipe end 241 existing shoulder 242 educated. In the embodiment, this shoulder 242 a sloping shoulder, but it can also be a radially extending shoulder. The second axial stop 35 for supporting the spring element 34 is at the in the larger diameter Rohrendabschnitt 241 of the valve seat carrier 24 immersed extension sleeve 26 arranged and from the annular front end of the extension sleeve 26 educated.
  • When dosing the valve is in the valve chamber 12 enclosed medium under a system pressure of a few bar, which is required to a metered amount of medium when opening the valve via the valve opening 11 z. B. in the exhaust gas of the internal combustion engine. At the end of the metering operation, the valve is usually emptied automatically by sucking back, alo freed from the medium to exclude freeze damage in the valve. For some systems, e.g. B. at dangerous goods transporters, there is an emergency stop switch, after the operation of the sucking back is omitted. Since this emergency stop switch is sometimes also operated improperly to stop the vehicle, there is the risk of freezing damage by the increasing in freezing during freezing volume in the valve chamber by the retention of the medium in the valve when the outside temperatures fall below freezing 12 enclosed medium. In the valve described here, this increase in volume generates an axial displacement force on the assembly of magnetic armature 17 and magnetic core 18 with adjusting sleeve 30 and valve closing spring 29 that is greater than the biasing force of the spring element 34 , The magnetic core 18 is under elastic compression of the spring element 34 away from the first axial stop 33 moved and thus creates in the Vetnilkammer 12 an additional space to accommodate the increase in volume of the freezing medium. This results in the valve chamber 12 no ice pressure that could mechanically damage components in the valve. With thawing of the freezing medium pushes the relaxing spring element 34 the magnetic core 18 again against the axial stop 33 , as shown in the drawing.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • DE 102004025062 B4 [0003]
    • DE 19932763 A1 [0004]

Claims (8)

  1. Valve for a flowing medium, in particular a metering valve for metering a freezable liquid, having a valve opening ( 11 ) upstream valve chamber ( 12 ), with a medium inflow ( 13 ), with one through the valve chamber ( 12 ) extending through valve needle ( 14 ) for controlling the valve opening ( 11 ) and with an electromagnet ( 16 ), one on the valve needle ( 14 ), the valve chamber ( 12 ) on the valve opening ( 11 ) opposite side limiting armature ( 17 ) and one with the tanker ( 17 ) axially aligned magnetic core ( 18 ), characterized in that the magnetic core ( 18 ) arranged axially displaceable and by means of an elastically deformable element to a first axial stop ( 33 ) is pressed.
  2. Valve according to claim 1, characterized in that the elastically deformable element comprises a prestressed spring element ( 34 ), which is between the gas tanker ( 17 ) facing away from the end of the magnetic core ( 18 ) and a second axial stop ( 35 ) is supported.
  3. Valve according to claim 2, characterized in that the spring element ( 34 ) has a biasing force which is greater than that during operation of the valve when the magnet armature ( 17 ) on the magnetic core ( 18 ) on the magnetic core ( 18 ) acting impact force.
  4. Valve according to claim 2 or 3, characterized in that the spring element ( 34 ) a cylindrical helical compression spring, a plate spring or a plate spring package ( 36 ) is with several superimposed disc springs.
  5. Valve according to one of claims 2 to 4, characterized in that the valve opening ( 11 ) with a circumferential valve seat ( 22 ) in a valve seat body ( 23 ) is formed, the a tubular valve seat carrier ( 24 ) terminates at one end that armature ( 17 ) and magnetic core ( 18 ) in the valve seat carrier 24 ) are arranged and that the first axial stop ( 33 ) in the valve seat carrier ( 24 ) and the second axial stop ( 35 ) at one in the valve seat carrier ( 24 ) dipping and attached to this extension sleeve ( 26 ) is arranged.
  6. Valve according to claim 5, characterized in that the valve seat carrier ( 24 ) at its from the valve seat body ( 23 ) turned away end a larger diameter pipe end portion ( 241 ) and that the first axial stop ( 33 ) from one at the transition to the larger diameter pipe section ( 241 ) existing shoulder ( 242 ) and the second stop ( 35 ) from the annular front end of the extension sleeve ( 26 ) is formed.
  7. Valve according to claim 5 or 6, characterized in that the valve seat carrier ( 24 ) in one a magnetic coil ( 19 ) of the electromagnet ( 16 ) receiving valve housing ( 31 ) is determined that magnetic core ( 18 ) and magnetic armature ( 17 ) are formed hollow cylindrical, that the valve needle ( 14 ) hollow, at its valve opening end with one with the valve seat ( 22 ) cooperating closing head ( 15 ) and with at least one connection of the hollow interior to the valve chamber ( 12 ) producing opening ( 28 ) and that the extension sleeve ( 26 ) at the medium inflow ( 13 ) connected.
  8. Valve according to claim 7, characterized in that in the hollow magnetic core ( 18 ) an adjusting sleeve ( 20 ) is arranged and that a valve closing spring ( 29 ) on the adjusting sleeve ( 30 ) and on the assembly of magnetic armature ( 17 ) and valve needle ( 14 ) is supported.
DE201010030925 2010-07-05 2010-07-05 Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream a valve opening that stands in connection with medium inflow Pending DE102010030925A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201010030925 DE102010030925A1 (en) 2010-07-05 2010-07-05 Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream a valve opening that stands in connection with medium inflow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010030925 DE102010030925A1 (en) 2010-07-05 2010-07-05 Valve for flowing medium, particularly metering valve for metering freezing liquid, comprises valve chamber, which upstream a valve opening that stands in connection with medium inflow

Publications (1)

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DE102010030925A1 true DE102010030925A1 (en) 2012-01-05

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013113881A1 (en) * 2012-02-03 2013-08-08 Emitec Gesellschaft Für Emissionstechnologie Mbh Dosing valve for additives at risk of freezing
WO2013141780A1 (en) * 2012-03-20 2013-09-26 Scania Cv Ab Method pertaining to an scr system and an scr system
DE102012213699A1 (en) 2012-08-02 2014-02-06 Robert Bosch Gmbh Solenoid valve for dosing fluid with fluid-carrying housing assembly, has hollow coil assembly seated on housing assembly with inner casing, where inner casing is provided with elastic sealant layer in area of bobbin
WO2014072018A1 (en) * 2012-11-07 2014-05-15 L'orange Gmbh Injector for reduction agent
WO2018017462A1 (en) * 2016-07-21 2018-01-25 Continental Automotive Systems, Inc. Diesel exhuast fluid injector calibration freeze protection insert

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932763A1 (en) 1999-07-14 2001-01-18 Bosch Gmbh Robert Fuel injector
DE102004025062B4 (en) 2004-05-18 2006-09-14 Hydraulik-Ring Gmbh Freezer-compatible metering valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932763A1 (en) 1999-07-14 2001-01-18 Bosch Gmbh Robert Fuel injector
DE102004025062B4 (en) 2004-05-18 2006-09-14 Hydraulik-Ring Gmbh Freezer-compatible metering valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013113881A1 (en) * 2012-02-03 2013-08-08 Emitec Gesellschaft Für Emissionstechnologie Mbh Dosing valve for additives at risk of freezing
US9982583B2 (en) 2012-02-03 2018-05-29 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Dosing valve for additives at risk of freezing, method for producing a dosing valve and motor vehicle
WO2013141780A1 (en) * 2012-03-20 2013-09-26 Scania Cv Ab Method pertaining to an scr system and an scr system
EP2828495A4 (en) * 2012-03-20 2015-09-02 Scania Cv Ab Method pertaining to an scr system and an scr system
DE102012213699A1 (en) 2012-08-02 2014-02-06 Robert Bosch Gmbh Solenoid valve for dosing fluid with fluid-carrying housing assembly, has hollow coil assembly seated on housing assembly with inner casing, where inner casing is provided with elastic sealant layer in area of bobbin
WO2014072018A1 (en) * 2012-11-07 2014-05-15 L'orange Gmbh Injector for reduction agent
WO2018017462A1 (en) * 2016-07-21 2018-01-25 Continental Automotive Systems, Inc. Diesel exhuast fluid injector calibration freeze protection insert
US10227906B2 (en) 2016-07-21 2019-03-12 Continental Powertrain USA, LLC Diesel exhaust fluid injector calibration freeze protection insert

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