Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust 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
  • F01N3/18—Exhaust 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
  • F01N3/20—Exhaust 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust 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
  • F01N3/18—Exhaust 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
  • F01N3/20—Exhaust 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
  • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
  • F01N3/2066—Selective catalytic reduction [SCR]
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust 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
  • F01N3/24—Exhaust 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 constructional aspects of converting apparatus
  • F01N3/36—Arrangements for supply of additional fuel
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N2610/00—Adding substances to exhaust gases
  • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N2610/00—Adding substances to exhaust gases
  • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
  • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
• • Y—GENERAL 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
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the present invention relates to an injector holder for receiving an injector.
• injectors can be used in particular for adding a reducing agent to an exhaust system.
• SCR selective catalytic reduction
• the exhaust gas is fed to an immediately reducing substance such as ammonia or a precursor thereof.
• an immediately reducing substance such as ammonia or a precursor thereof.
• a precursor for example, a urea-water solution can be used.
• Ammonia is converted to molecular nitrogen and water by selective catalytic reduction with nitrogen monoxide and nitrogen dioxide.
• the selective catalytic reduction takes place in an SCR catalyst.
• the introduction of reducing agent in the exhaust gas via an injector This injector regularly has a fastening device, by means of which the injector is attached to an exhaust pipe.
• the injector injects the reducing agent in this way directly into the exhaust pipe.
• the injector is regularly exposed to high thermal and mechanical loads, so that it must be replaced in case of damage.
• replacement of the injector is usually not inexpensive and easy.
• the object of the invention is therefore to at least partially solve the problems described with reference to the prior art and, in particular, to provide an injector holder which reduces the thermal and mechanical loads on the injector and enables a simple and cost-effective replacement of the injector.
• an exhaust pipe should be specified, which allows a particularly simple connection of an injector with an injector.
• the injector holder according to the invention serves to fully receive at least one injector and has a housing with at least one injector, wherein the at least one injector has a first opening and a second opening, wherein the first opening of the injector is connectable to an exhaust gas conducting region of an exhaust pipe and the second opening of the injector can be closed by a closure.
• the housing is in particular a metallic body, which preferably consists of a tubular hollow profile.
• the housing has a length that extends along a center axis (or in the case of a tubular housing) along a central axis. In the case of a tubular housing, the length also extends from a first end face of the housing to a second end face of the housing.
• the length is a maximum of 20 cm, preferably a maximum of 15 cm and more preferably a maximum of 10 cm.
• the housing further has a width (or in the case of a tubular housing a diameter) which extends orthogonal to the length (or center axis or central axis) and the maximum of 10 cm, preferably at most 5 cm, and more preferably at most 2.5 cm is.
• the housing of the injector holder also has at least one injector chamber, where concerns with it to define a cavity into which an injector can be arranged entirely, at least. "Complete" means insbesonde ⁇ re that the injector at any point on a perimeter of the housing (the apertures z. B.) the injector holding augmentation protrudes.
• the injector consists of at least one injector with a Redukti ⁇ onskarzulauf, a nozzle and a valve for controlling a reductive ⁇ tion agent delivery of the injector.
• the injector can also include a check circuit for control signals to a SCR control.
• the first opening of the injector chamber is arranged and clearedstal ⁇ tet that through the injector, a reducing agent can be introduced into an exhaust pipe.
• the first opening is aligned with a nozzle of the injector and is located, in particular in the case of a tubular housing, in the region of a first end face of the
• the second opening of the injector chamber is arranged un d lateststal ⁇ tet that the injector is easily replaceable and / or accessible.
• the second opening is preferably located opposite the first Publ ⁇ voltage, especially in the area of a second end of the housing.
• the second opening can be closed further by a closure, wherein the second opening is preferably closed during an operational state of the injector and opened during maintenance of the Injek ⁇ sector.
• the closure can be attached by known means to the housing of the injector holder, in particular also by a crimp connection.
• the closure is repeatably closable.
• the closure to the housing of Injektorhalterung can be screwed particular published in the area of the second opening.
• the housing has in the region of the second Publ ⁇ voltage and the closure on a corresponding thread.
• the second opening of the injector chamber may also be secured to the housing of the injector holder by clamping the closure or by a bayonet lock of the closure.
• an injector is arranged, which is mounted with a first seal and with a second seal in the injector.
• the injector is mounted with the first seal and with the second seal in the injector chamber such that the injector is vibration-damped or even vibration-decoupled from the housing of the injector holder.
• the injector with the aid of the first seal and the second seal is mounted in particular spaced from the housing.
• the second seal is in particular a rubber O-ring.
• the first seal is a radially acting seal which consists at least partially of rubber, or at least partially of mica.
• the first seal is particularly suitable for sealing the injector chamber (together with the injector) with respect to an exhaust gas-conducting region of an exhaust gas line.
• Alumosilicates are minerals in which silicon is tetrahedrally surrounded by four oxygen atoms.
• the second seal consists at least partially of rubber, or at least partially of mica Rubber is found to be particularly vibration-damping and mica to be particularly resistant to heat.Almost preferred is that the first seal (only) with mica and the second seal (only) are formed with rubber.
• the injector chamber has at least one recess, preferably a plurality of recesses, in the housing. These recesses extend starting from the injector chamber, preferably completely through the housing of the injector holder.
• the recesses are preferably radially, in particular about 360 ", distributed over a circumferential surface of the Ge ⁇ reheatuses (equal). It has been found, surprisingly, that produced by such recesses by vibration noise and / or produced by the injector noise can be reduced.
• the injector holder has at least one radiation collar.
• This at least one radiation collar is arranged radially on the circumferential surface of the housing of the injector holder and consists of a thermally conductive material, in particular metal.
• the supply line is preferably a line which conducts a reducing agent from a reducing agent reservoir to the injector and / or vice versa.
• the control line is preferably an electrical line which connects the injector to a control device of an SCR system in a data-conducting and / or electrical manner.
• the closure has at least one plug holder.
• This is, for example, a clamping device which secures a plug which secures the supply line and / or control line to the closure against slipping.
• the plug preferably sits on a supply orifice of the closure and / or control port of the closure.
• the supply connection of the closure and the control connection of the closure serve to connect the supply line and / or control line to the injector arranged in the injector.
• an exhaust gas line comprising a connecting element fixed to the exhaust gas line and an injector holder detachably connected to the connecting element, are also proposed.
• the connecting element is in particular a sleeve, a nut or another element which is suitable for receiving an injector holder, the connecting element being fixed in particular to the exhaust pipe by a welded connection.
• An injector holder is detachably connected to this connecting element, for example by a screw connection.
• Fig. 1 an exhaust pipe with an injector holder.
• Fig. 1 shows an exhaust pipe 8, on the outer wall 27, a connecting element 7 is attached by a welded joint 11.
• This connecting element 7 has a receptacle 28 for an injector holder 1.
• the receptacle 28 of the connecting element 7 have a thread, not shown here.
• the diameter of the receptacle 28 substantially corresponds to the width 22 of the housing 20 of the Injektorhalterung l.
• the housing 20 is tubular in this embodiment.
• the housing 20 of the injector holder 1 also has a length 21 which extends in the direction of a central axis 23 shown here as a central axis from a first opening 2 to a second opening 3, or from a first end face 24 to a second end face 25, extends.
• an injector chamber 9 This injector chamber 9 is connected via the first opening 2 to an exhaust-gas-conducting region 12 of the exhaust gas line 8.
• the second opening 3 is closed by a closure 6 repeatable.
• an injector 10 is mounted with the aid of a first seal 4 and a second seal 5 so that a nozzle 32 of the injector 10 is aligned with the first opening 2 of the housing 20.
• the first seal 4 seals the injector chamber 9 together with the injector 10 with respect to the exhaust-gas-conducting region 12 of the exhaust gas line 8.
• the injector 10 has an injector housing 33 and a valve 34 connected to an SCR controller 31, the connection of the valve 34 to the SCR controller 31 not being shown here.
• the closure 6 has a supply connection 18 and a control connection 19.
• a supply line 15 and a control line 16 are connected to the injector 10 via this supply connection 18 and this control connection 19 with the aid of a plug 29.
• the supply line 15 is connected to a reducing agent reservoir 30 and the control line 16 to the SCR control 31.
• the closure 6 has a plug holder 15 for securing the plug 29 against slipping.
• the housing 20 of the injector holder 1 has a plurality of radially arranged recesses 13 which extend from the injector chamber 9 to a circumferential surface 26 of the housing 20.
• a plurality of radiation collars 14 are arranged on the peripheral surface 26 of the housing 20.
• connection element 7 first seal 4, recesses 13, radiation collar 14, second seal 5 and closure. 6
• an injector can be effectively protected against thermal and mechanical stresses and can be exchanged in a particularly simple and cost-effective manner.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Exhaust Gas After Treatment (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=42813063

Family Applications (1)

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Family Cites Families (15)

• 2009
  • 2009-10-07 DE DE102009048514A patent/DE102009048514A1/de not_active Withdrawn
• 2010
  • 2010-08-18 EP EP10743158A patent/EP2486252A1/de not_active Withdrawn
  • 2010-08-18 IN IN2273DEN2012 patent/IN2012DN02273A/en unknown
  • 2010-08-18 JP JP2012532512A patent/JP2013507555A/ja active Pending
  • 2010-08-18 RU RU2012118242/06A patent/RU2012118242A/ru not_active Application Discontinuation
  • 2010-08-18 CN CN201080044886XA patent/CN102667088A/zh active Pending
  • 2010-08-18 KR KR1020127011677A patent/KR20120064129A/ko not_active Ceased
  • 2010-08-18 WO PCT/EP2010/062071 patent/WO2011042247A1/de not_active Ceased
• 2012
  • 2012-04-09 US US13/442,083 patent/US20120222409A1/en not_active Abandoned

Non-Patent Citations (1)

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