EP2890471A1 - Einrichtung zur saugfiltration von fluiden - Google Patents
Einrichtung zur saugfiltration von fluidenInfo
- Publication number
- EP2890471A1 EP2890471A1 EP13744966.6A EP13744966A EP2890471A1 EP 2890471 A1 EP2890471 A1 EP 2890471A1 EP 13744966 A EP13744966 A EP 13744966A EP 2890471 A1 EP2890471 A1 EP 2890471A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- filter
- suction
- filter medium
- filter element
- 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- Withdrawn
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 15
- 238000000967 suction filtration Methods 0.000 title claims abstract description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004202 carbamide Substances 0.000 claims abstract description 21
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
-
- 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 ; Methods of operation or control of catalytic converters
- 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
- 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
- F01N2610/1426—Filtration means
-
- 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 invention relates to a device for suction filtration of fluids, such as urea solutions for exhaust aftertreatment systems, with a fluid-storing tank and a filter element arranged in this, which has a filter medium which separates the tank filling from a clean-side, inner filter cavity and from the Bottom area of the tank extends to a level height corresponding to a portion of the filling volume of the tank, wherein the filter cavity is provided with a suction port through which the cleaned fluid can be discharged by a suction pressure corresponding to a system operating pressure. Furthermore, the invention relates to a filter element provided for use in such a device.
- Impurities in the injector system could lead to blockage of channels and / or metering pumps and / or valves. Since the urea solution provided for refueling may contain different impurities and in particular there is the risk that a quantity of dirt may be introduced into the tank during the refueling process, it is necessary to filter the urea solution which is taken from the tank.
- document WO 201 1/124637 A1 discloses a device of the aforementioned type, in which the filter element serving as a suction filter is integrated into the tank storing the urea solution.
- the performance of this device is not optimal for the use in motor vehicles in question.
- the safe operation of the system is dependent on the level in the tank does not fall below the upper edge of the filter medium of the filter element. Once this is the case, there is a risk that air will be sucked out of the tank via the unused, ie exposed part of the filter medium and into the system.
- the invention has the object to provide a device for suction filtration available, which is characterized by a particularly favorable performance in a built-in tank in question filter element. According to the invention this object is achieved by a device having the features of claim 1 in its entirety.
- the filter element comprises a filter medium that is impermeable to air at suction pressures within the range of a low operating system pressure.
- the suction connection is arranged on the filter cavity at its upper end remote from the tank bottom. This arrangement not only solves the problem that air could be sucked in during operation at filling level dropped over the upper edge of the filter element, but moreover a particularly safe starting of the system after downtimes is guaranteed. Due to the lack of air permeability of the filter medium, air initially contained within the filter cavity of the filter element can not escape during filling of the tank. When the pump is put into operation, this amount of air contained in the filter element is removed via the head-side suction connection. Since no urea solution is conveyed during this process, the amount of air can be eliminated by normal venting, for example automatic pump venting, after which the system is ready to operate without air.
- An air-impermeable filter medium which is air-permeable for the candidate pressure gradients can be formed by a melt-blown fiber material, wherein plastic fibers, in particular of PA 66, can be provided.
- a filter medium is provided with a wall thickness in the range of 5 mm and a fineness in the range of 10 ⁇ . In the case of filter media constructed in this way, it completely sucks completely with the fluid in question as a result of the capillary action, even if parts of the filter medium lie above the filling mirror, so that the filter medium is airtight over its entire height for low suction pressures.
- the invention is also according to claim 6, a filter element, which is provided for use in a device for Saugfi ltration in one of the claims 1 to 5.
- FIG. 1 shows a device of the prior art for the suction filtration of a urea solution in the manner of a greatly simplified functional sketch, wherein the filling stand height in the associated tank lies above the upper edge of the relevant filter element;
- Fig. 2 is a FIG. 1 corresponding presen- tation of the device of
- Fig. 4 is a corresponding sketch-like representation of the embodiment of the invention, wherein a state is shown after commissioning, and
- FIGS. 5 and 6 are sketchy representations corresponding to the states of the
- Embodiment of the invention with differently far lowered level heights in the tank show.
- the filter medium 12 of the filter element 4 extends from a resting on the tank bottom 10 Fu plate 14 to a located on the upper edge 16 of the filter element 4 cover plate 18 and limited with base plate 14 and cover plate 18 a clean side during Filt- rationsvorgang forming inner filter cavity 20.
- On the base plate 14 is a suction port 22, from which, via an opening 24 in Tank bottom 10, cleaned urea solution can be discharged, as indicated by flow arrows 26.
- FIG. 2 illustrates, compared with FIG. 1, an operating state of the device of the prior art in which the fill level 28 in the tank 2 has fallen below the upper edge 16 of the filter element 4.
- FIGS. 3 to 6 illustrate the different functioning of the device according to the invention compared to the prior art shown in FIGS. 1 and 2.
- the filter element 34 which is arranged on the bottom 10 of the tank 2 and provided for suction filtration as in the prior art shown in Figs. 1 and 2, a filter medium 32 which is impermeable to air for low suction pressures.
- FIGS. Embodiment of the suction port 22 not on the lower base plate 14 of the filter element 34, but on the upper cover plate 18.
- FIG. 3 illustrates a state of the device prior to commissioning of the system and when filling the tank 2 to a level above the filter element 34 level 28.
- an initial amount of air in the filter cavity 20 is included in the filter cavity 20 prior to commissioning of the downstream pumping device, so that during refueling by geodetic pressure of the filter element 34 surrounded urea solution in the filter cavity 20, an overpressure develops, so that Only a slight bottom layer 36 of inflowing urea solution is formed, above which there is an amount of air, see Fig. 3. If, starting from the state shown in Fig. 3, the system is put into operation, then by the associated pump, this air amount discharged from the filter cavity 20, see arrow 38.
- the entire air content is removed from the filter cavity 20 for a venting operation to be carried out by means of a pump, until the cleaned fluid, initially forming only the bottom layer 36, has risen to the suction connection 22 , The filter element 34 is now free of air and the device is ready.
- FIG. 5 and 6 show further operating phases with different levels of lowered level 28. Thanks to the air-impermeable filter medium 34 of the filter cavity 20 is completely filled with the cleaned urea solution, ie, air free. Therefore, the entire capacity of the tank 2 can be used without the risk of air entering the system, see Fig. 6, where the state of the substantially completely empty tank 2 is shown.
- such a filter medium 32 is characterized by a high Kapi l larrial, so that it even with only tei lweiser wetting with a fluid, such as aqueous urea solution, over its entire Length is aspirated and thus impermeable for eligible, low suction pressures. While the suction filtration takes place by means of a relevant suction pump (not shown) connected to the suction connection 22, it is understood that downstream pumping devices
- + can be provided as a pressure booster to produce desired operating pressures, for example, injection pressures for Adblue applications.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23212700.1A EP4321740A3 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012017288.5A DE102012017288A1 (de) | 2012-08-31 | 2012-08-31 | Einrichtung zur Saugfiltration von Fluiden |
PCT/EP2013/002207 WO2014032752A1 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23212700.1A Division EP4321740A3 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2890471A1 true EP2890471A1 (de) | 2015-07-08 |
Family
ID=48915973
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13744966.6A Withdrawn EP2890471A1 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
EP23212700.1A Pending EP4321740A3 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP23212700.1A Pending EP4321740A3 (de) | 2012-08-31 | 2013-07-25 | Einrichtung zur saugfiltration von fluiden |
Country Status (4)
Country | Link |
---|---|
US (1) | US9808749B2 (de) |
EP (2) | EP2890471A1 (de) |
DE (1) | DE102012017288A1 (de) |
WO (1) | WO2014032752A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018208643A1 (de) * | 2018-05-30 | 2019-12-05 | Röchling Automotive SE & Co. KG | Kfz-Tankbaugruppe und Entnahmemodul mit einem porösen Förderkörper |
GB2610228B (en) * | 2021-08-31 | 2023-08-23 | Perkins Engines Co Ltd | A filter arrangement for a selective catalytic reduction system |
GB2626196A (en) * | 2023-01-16 | 2024-07-17 | Perkins Engines Co Ltd | Tank with replaceable filter unit, e.g. for diesel exhaust fluid |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090084736A1 (en) * | 2007-10-01 | 2009-04-02 | Alain Rocheux | Apparatus, system, and method for filtration of a dosing fluid in an exhaust aftertreatment system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2298151T3 (es) * | 2000-07-12 | 2008-05-16 | Philip Morris Products S.A. | Filtro con receso y articulo fumable conteniendo un filtro con receso. |
DE10340246B3 (de) * | 2003-08-29 | 2005-03-10 | Siemens Ag | Kraftstoffbehälter für ein Kraftfahrzeug und Kraftstoff-Fördereinheit |
JP4005569B2 (ja) * | 2004-01-27 | 2007-11-07 | 三菱電機株式会社 | 燃料供給装置 |
DE102009029400B4 (de) * | 2009-09-11 | 2023-09-28 | Robert Bosch Gmbh | Fahrzeugtank |
DE102010014314A1 (de) * | 2010-04-09 | 2011-10-13 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Vorrichtung zur Bereitstellung von flüssigem Reduktionsmittel |
DE102010051072B4 (de) * | 2010-11-12 | 2012-11-08 | Kautex Textron Gmbh & Co. Kg | Flüssigkeitsbehälter, insbesondere für eine wässrige Harnstofflösung |
-
2012
- 2012-08-31 DE DE102012017288.5A patent/DE102012017288A1/de active Pending
-
2013
- 2013-07-25 US US14/424,211 patent/US9808749B2/en active Active
- 2013-07-25 WO PCT/EP2013/002207 patent/WO2014032752A1/de active Application Filing
- 2013-07-25 EP EP13744966.6A patent/EP2890471A1/de not_active Withdrawn
- 2013-07-25 EP EP23212700.1A patent/EP4321740A3/de active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090084736A1 (en) * | 2007-10-01 | 2009-04-02 | Alain Rocheux | Apparatus, system, and method for filtration of a dosing fluid in an exhaust aftertreatment system |
Also Published As
Publication number | Publication date |
---|---|
EP4321740A3 (de) | 2024-03-20 |
EP4321740A2 (de) | 2024-02-14 |
WO2014032752A1 (de) | 2014-03-06 |
DE102012017288A1 (de) | 2014-03-06 |
US20150202553A1 (en) | 2015-07-23 |
US9808749B2 (en) | 2017-11-07 |
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