EP3215739A1 - Pumpeneinheit für reduktionsmittel einer abgasreinigungsanlage - Google Patents
Pumpeneinheit für reduktionsmittel einer abgasreinigungsanlageInfo
- Publication number
- EP3215739A1 EP3215739A1 EP15790158.8A EP15790158A EP3215739A1 EP 3215739 A1 EP3215739 A1 EP 3215739A1 EP 15790158 A EP15790158 A EP 15790158A EP 3215739 A1 EP3215739 A1 EP 3215739A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- pump
- pump unit
- housing
- unit according
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
-
- 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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/008—Spacing or clearance between cylinder and piston
Definitions
- the invention relates to a pump unit for reducing agent of an exhaust gas purification system of a membrane carrier disposed on a membrane and with a pump housing for supporting a radially outer collar of the membrane.
- An emission control system for such a pump unit is known from DE 4410022 AI.
- a metering system is provided, via which a reducing agent can be fed to a catalyst.
- the invention is based on the problem, a pump unit of the type mentioned so on to form that it has a particularly reliable tightness.
- the radially outer collar with the reinforcing ring can be clamped and pressed under pretension between two housing parts of the pump housing. This ensures a particularly reliable seal already at the outer collar of the membrane. As a result, leaks are avoided in the radially inner region of the membrane seen from the radially outer collar. This design also ensures reliable operation of the entire emission control system.
- this pump stage is particularly suitable for use in so-called SCR pump units.
- a particularly reliable fit of the reinforcing ring on the pump housing can be easily ensured according to another advantageous embodiment of the invention, when the reinforcing ring is pressed onto the pump housing.
- FIG. 1 is a sectional view through a pump stage
- Fig. 2 shows another embodiment of the pump stage.
- FIG. 1 shows a sectional view through a pump stage 1 designed as an orbital pump for reducing agent of an emission control system (not shown) for an internal combustion engine of a motor vehicle.
- an emission control system is known for example from DE 44 10 022 AI.
- the pump stage 1 has a pump housing 2, which is composed of several housing parts 3-5.
- the pump housing 2 has a connection 6 for conveying the reducing agent.
- a drive shaft 7 is rotatably mounted and mounted on a roller bearing 8 on a membrane carrier 9.
- the membrane carrier 9 is connected to the radially inner region of a membrane 10.
- the membrane 10 has two radially outer coils 11, 12, which are each clamped between two housing parts 3-5.
- the housing parts 3 - 5 have for the edges 11, 12 circumferential retaining grooves 13, 14. It can be clearly seen that the collars 11, 12 of the membrane 10 completely fill the retaining grooves 13, 14.
- the collars 11, 12 each form a reinforcing ring 15, 16 of the membrane 10 due to their shape.
- FIG. 1 shows a separating chamber pin 17 of the pump stage 1.
- FIG. 2 shows a partial area of a further embodiment of a pump stage 18 with a pump housing 19 before mounting on a membrane 20.
- the pump housing 19 has three housing parts 21-23.
- the membrane 20 has two circumferential coils 24, 25 at its radially outer area completely filling a retaining groove 26, 27 formed by the housing parts.
- the collars 24, 25 also each have a reinforcing ring 28, 29 made of metal.
- the Ver ⁇ reinforcing rings 28 on the housing parts 21 29 - pressed 23rd The membrane 20 is mounted on a membrane support 30.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
- Exhaust Gas After Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014222743.7A DE102014222743A1 (de) | 2014-11-06 | 2014-11-06 | Pumpeneinheit für Reduktionsmittel einer Abgasreinigungsanlage |
| PCT/EP2015/075806 WO2016071443A1 (de) | 2014-11-06 | 2015-11-05 | Pumpeneinheit für reduktionsmittel einer abgasreinigungsanlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3215739A1 true EP3215739A1 (de) | 2017-09-13 |
| EP3215739B1 EP3215739B1 (de) | 2020-04-22 |
Family
ID=54396904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15790158.8A Active EP3215739B1 (de) | 2014-11-06 | 2015-11-05 | Pumpeneinheit für reduktionsmittel einer abgasreinigungsanlage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10378528B2 (de) |
| EP (1) | EP3215739B1 (de) |
| CN (1) | CN107076135B (de) |
| DE (1) | DE102014222743A1 (de) |
| WO (1) | WO2016071443A1 (de) |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2070738A (en) * | 1934-01-03 | 1937-02-16 | Klein Wilhelm | Pump with cam drive |
| DE859477C (de) * | 1951-01-30 | 1952-12-15 | Christian Dr Groeber | Kolbenverdichter fuer Kaeltemaschinen |
| US2946291A (en) * | 1957-01-14 | 1960-07-26 | Roebig Christ & Co Inc | Suction and pressure pump |
| US3408947A (en) * | 1967-03-14 | 1968-11-05 | William J Easton Jr | Diaphragm pump with single compression roller |
| US4332534A (en) * | 1978-12-14 | 1982-06-01 | Erich Becker | Membrane pump with tiltable rolling piston pressing the membrane |
| DE3414006C2 (de) * | 1984-04-13 | 1986-03-06 | Bran & Lübbe GmbH, 2000 Norderstedt | Kolbenmembranpumpe |
| DE3706338A1 (de) * | 1987-02-27 | 1988-09-08 | Wagner Gmbh J | Membranpumpvorrichtung |
| DE3928949A1 (de) | 1989-08-31 | 1991-03-14 | Wagner Gmbh J | Membranpumpe |
| DE4136805A1 (de) * | 1991-11-08 | 1993-05-13 | Almatec Tech Innovationen Gmbh | Doppelmembranpumpe |
| DE4410022A1 (de) | 1994-03-23 | 1995-10-05 | Siemens Ag | Abgasreinigungsanlage für eine Brennkraftmaschine |
| DE29708906U1 (de) * | 1997-05-21 | 1997-07-17 | Lang Apparatebau Gmbh, 83313 Siegsdorf | Kolbenmembranpumpe mit dichtungsloser Kolben-Zylindereinheit |
| JP3542990B2 (ja) * | 2001-12-05 | 2004-07-14 | 株式会社ヤマダコーポレーション | ダイヤフラムポンプ装置 |
| DE102008054686A1 (de) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Fluidfördereinrichtung |
| DE102010028850A1 (de) | 2010-05-11 | 2011-11-17 | Robert Bosch Gmbh | Fördervorrichtung |
| DE102011015110B3 (de) * | 2011-03-19 | 2012-01-26 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Dosiersystem |
| DE102011075726A1 (de) * | 2011-05-12 | 2012-11-15 | Robert Bosch Gmbh | Vorratstank und Funktionseinheit hierzu |
| DE102012221492B4 (de) * | 2012-11-23 | 2021-12-30 | Robert Bosch Gmbh | Membranpumpe mit Exzenterantrieb und integriertem Absperrventil |
| DE102014112391A1 (de) * | 2014-08-28 | 2016-03-03 | Continental Automotive Gmbh | Pumpe zur Förderung einer Flüssigkeit, insbesondere zur Förderung eines Abgasreinigungsadditivs |
-
2014
- 2014-11-06 DE DE102014222743.7A patent/DE102014222743A1/de not_active Withdrawn
-
2015
- 2015-11-05 WO PCT/EP2015/075806 patent/WO2016071443A1/de not_active Ceased
- 2015-11-05 EP EP15790158.8A patent/EP3215739B1/de active Active
- 2015-11-05 US US15/524,771 patent/US10378528B2/en active Active
- 2015-11-05 CN CN201580060245.6A patent/CN107076135B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107076135B (zh) | 2020-08-11 |
| WO2016071443A1 (de) | 2016-05-12 |
| US10378528B2 (en) | 2019-08-13 |
| DE102014222743A1 (de) | 2016-05-12 |
| US20180306177A1 (en) | 2018-10-25 |
| EP3215739B1 (de) | 2020-04-22 |
| CN107076135A (zh) | 2017-08-18 |
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