WO2011064050A1 - Verfahren zur bestimmung des zustandes eines reduktionsmittels in einem reduktionsmitteltank - Google Patents
Verfahren zur bestimmung des zustandes eines reduktionsmittels in einem reduktionsmitteltank Download PDFInfo
- Publication number
- WO2011064050A1 WO2011064050A1 PCT/EP2010/065643 EP2010065643W WO2011064050A1 WO 2011064050 A1 WO2011064050 A1 WO 2011064050A1 EP 2010065643 W EP2010065643 W EP 2010065643W WO 2011064050 A1 WO2011064050 A1 WO 2011064050A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reducing agent
- exhaust gas
- determining
- tank
- recorded
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
-
- 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
- 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
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- 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
-
- 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
- F01N2610/1406—Storage means for substances, e.g. 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
-
- 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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/18—Parameters used for exhaust control or diagnosing said parameters being related to the system for adding a substance into the exhaust
- F01N2900/1806—Properties of reducing agent or dosing system
- F01N2900/1818—Concentration of the reducing agent
-
- 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 a method for determining the condition of a reducing agent in a Redukti ⁇ onskartank, wherein the reducing agent to the exhaust after ⁇ treatment of the exhaust gases produced by an internal combustion engine is used.
- exhaust gas aftertreatment units are known from the prior art, in which a reducing agent (urea water solution) stored in a reducing agent tank is fed to the exhaust gas line of an internal combustion engine.
- a reducing agent urea water solution
- NOx nitrogen oxide
- SCR Selective Catalytic Reduction
- the so-called Selective Catalytic Reduction (SCR) Ver ⁇ drive is used here. Since the reducing agent is consumed by the injection into the exhaust system of the internal combustion engine in the region of an SCR catalyst over a long term, fresh reducing agent must be refilled from time to time in the Reduktionsmit ⁇ tank.
- the reduction of nitrogen oxides (NOx) is only possible if the urea-water solution has a sufficiently high quality.
- Reducing agents in this context are generally urea-water solutions of a certain quality, ie a certain mixing ratio between urea and water.
- This urine ⁇ material-water solutions are well known under the trade name AdBlue, urea, Denoxium and OFF 32nd
- AdBlue urea
- urea Denoxium
- OFF 32nd A sufficient reduction of nitric oxide is therefore only mög ⁇ exist if the reducing agent solution having a sufficiently high quality.
- a reduction of the nitrogen oxides in the exhaust gas of the internal combustion ⁇ machine is not sufficiently secured.
- the invention solves the problem by the following method steps: determination and recording of the filling and removal amounts of the reducing agent from the reducing agent tank with a level sensor over the entire life of the exhaust aftertreatment unit,
- the conductivity of the reducing agent is additionally determined with a conductivity sensor and recorded in a memory.
- the conductivity of the reducing agent is an important clue to Be ⁇ urannon reductant quality.
- the conductivity of the refilled Reduktionsmit ⁇ means with a conductivity sensor which is arranged in the filler neck of the reducing agent tank, is determined and recorded in a memory.
- the conductivity of the refilling agent is an important one
- the NOx concentration in the exhaust gas of the internal combustion engine with at least one NOx sensor is additionally determined and recorded in a memory.
- the NOx concentration in the exhaust gas is a direct measure of the effectiveness of the exhaust gas purification in the SCR catalytic converter and thus also for the quality of the reducing agent. It is for example, it is conceivable to place a NOx sensor in front of the SCR catalytic converter and to place a NOx sensor behind the SCR catalytic converter and to compare the measured values of the two NOx sensors. The results of this comparison provide a direct indication of the quality of the exhaust gas purification with the reducing agent in the SCR catalytic converter.
- the theoretically necessary amount of reduction ⁇ means for completely reducing the NOx concentration in the exhaust gas with the actual required amount of Reduktionsmit- means for complete reduction of the NOx concentration in the exhaust gas with at least one NOx sensor can be determined and in one Memory to be recorded.
- FIG. 1 shows an internal combustion engine 6 with an exhaust gas system 7.
- Internal combustion engines in particular diesel engines, generate a not inconsiderable amount of environmentally harmful nitrogen oxides, the NOx.
- the output from the internal combustion engine 6 Stick ⁇ oxyde NOx are emitted with the exhaust gas 23 through the exhaust line 7 to the environment if not appropriate measures to re- prise the nitrogen oxides NOx in the exhaust system are made.
- the exhaust system shows an exhaust aftertreatment unit made of catalysts and other components, which are described below.
- an oxidation catalyst 8 is provided which is followed by a so-called SCR catalyst for decomposing the nitrogen oxides NOx contained in the exhaust gas.
- SCR stands here as abbreviation Selective Cataly- tic reduction.
- the conversion of the nitrogen oxides NOx into harmless nitrogen 2 and water H 2 O takes place in the SCR catalytic converter 9.
- a urea-water solution which is also referred to as reducing agent 2
- the reducing agent 2 then reacts with the nitrogen oxides NOx into the harmless components H 2 O and N 2 .
- the reducing agent tank 1 can Age reducing agent 2, wherein, for example organic Subs ⁇ dance reflected in the reducing agent 2 or the Redukti ⁇ onsstoff due to low temperatures (below -11 ° C) temporarily freezes and possibly loses its composition and quality ⁇ composition. Even high temperatures can damage the reducing agent 2, in particular the evaporation of water from the reducing agent 2 leads to a changed mixing ratio between the urea and the water. In addition, the urea can crystallize out under the action of oxygen and deposit as a crystalline precipitate in the reducing agent tank 1. Moreover, it is conceivable that the reducing agent tank 1 is intentionally or negligently filled with an inferior reducing agent 2 or even with pure water.
- the reducing agent tank contains, for example, at the filler neck 3, a conductivity sensor 22, which can measure the quality of the filled reducing agent 2 during a filling process.
- the tank cap 5 can be seen on the filler neck 3, at the opening of the conductivity measurement could be initiated with the conductivity sensor 22 in the filler neck 3.
- a conductivity sensor 22 and a temperature sensor 17 and a level sensor 21 is formed in the reducing agent tank 1, a conductivity sensor 22 and a temperature sensor 17 and a level sensor 21 is formed.
- the conductivity of the reducing agent 2 present in the reducing agent tank 1 can be detected permanently.
- the temperature of the reducing agent 2 present in the reducing agent tank 1 can be detected constantly with the temperature sensor 17.
- the temperature sensor 17 it can be determined with the temperature sensor 17 whether the reducing agent 2 is frozen in the reduction tank ⁇ 1, is in the liquid state or has become too hot.
- the level sensor 21 makes it possible to measure the level of the reducing agent 2 in the reducing agent tank 1 over the entire service life of the exhaust gas aftertreatment unit. All recorded data on the state of the reduction means 2 are stored in an electronic memory 25.
- an ultrasonic transmitter / receiver can be recognized, with which the speed of sound ei ⁇ ner ultrasonic wave of a certain frequency of Reduk- in the Reduk- tion medium tank 1 located reducing agent 2 can be determined.
- Ultrasonic transmitter 20 emitted ultrasonic pulse is also known, the sound velocity of Ultraschallpul ⁇ ses in the reducing agent 2 can be determined.
- This Ultra ⁇ speed of sound in the reducing agent 2 can formality to the square and in particular closed on the composition of the Redukti ⁇ onsffens 2 in the reducing agent tank. 1
- the ultrasound velocity of an ultrasound pulse having a specific frequency in pure water differs markedly from the ultrasound velocity of an ultrasound wave having a specific frequency in a twenty, fifty or ninety percent reductant solution.
- a removal tube 4 can be seen in the reducing agent tank 1, which leads with a pipe 24 to a filter and a pump 13, which pumps the reducing agent 2 from the reduction ⁇ medium tank 1 via an SCR valve 11 to the SCR nozzle 10 in the SCR catalyst , With the SCR valve 11, the amount of the injected reducing agent 2 can be regulated.
- the SCR valve 11 is electrically connected to the SCR control unit 15.
- the SCR control unit 15 thus controls the SCR valve 11.
- the SCR control unit 15 holds a plurality ⁇ number of signals from the following sensors:
- NOx sensors 18 which are arranged in the exhaust gas line 7 directly behind the internal combustion engine 6 or between the oxidation catalytic converter 8 and the SCR catalytic converter 9 and / or behind the SCR catalytic converter 9 at the outlet of the exhaust line 7;
- Ultrasonic transmitter and receiver 20 arranged in or on the reducing agent tank 1,
- a return line 29 which leads to much promoted reducing agent 2 back into the reducing agent tank 1.
- a return is provided entil 28, with which the amount of the back-promoted reducing agent 2 can be adjusted by the SCR control unit 15.
- the return line 29 may also be arranged temperature sensors 17 which determine the temperature of the back-promoted reducing agent 2 over the entire life of the exhaust aftertreatment unit.
- All these sensors provide their signals to the SCR control unit 15, which in turn tet an electronic memory 25 beinhal- in which all the signals provided over the entire service life of exhaust gas aftertreatment unit Le ⁇ ⁇ recorded to.
- the control unit 16 of the internal combustion engine also keeps Informa ⁇ functions from the SCR control unit 15 with which the internal combustion engine can be controlled in accordance with the reducing agent ⁇ quality. It is Z. B. conceivable that after the refilling of pure water in the reducing agent tank. 1 "
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012540340A JP5680104B2 (ja) | 2009-11-26 | 2010-10-18 | 還元剤容器における還元剤の状態を特定するための方法 |
US13/512,294 US20130074590A1 (en) | 2009-11-26 | 2010-10-18 | Method For Determining The State Of A Reducing Agent In A Reducing Agent Tank |
CN2010800538279A CN102667085A (zh) | 2009-11-26 | 2010-10-18 | 用于确定还原剂箱中还原剂的状态的方法 |
EP10773015A EP2504539A1 (de) | 2009-11-26 | 2010-10-18 | Verfahren zur bestimmung des zustandes eines reduktionsmittels in einem reduktionsmitteltank |
RU2012126529/06A RU2522234C2 (ru) | 2009-11-26 | 2010-10-18 | Способ определения состояния восстановителя в баке для восстановителя |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009055738.5 | 2009-11-26 | ||
DE102009055738A DE102009055738A1 (de) | 2009-11-26 | 2009-11-26 | Verfahren zur Bestimmung des Zustandes eines Reduktionsmittels in einem Reduktionsmitteltank |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011064050A1 true WO2011064050A1 (de) | 2011-06-03 |
Family
ID=43217179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/065643 WO2011064050A1 (de) | 2009-11-26 | 2010-10-18 | Verfahren zur bestimmung des zustandes eines reduktionsmittels in einem reduktionsmitteltank |
Country Status (8)
Country | Link |
---|---|
US (1) | US20130074590A1 (de) |
EP (1) | EP2504539A1 (de) |
JP (1) | JP5680104B2 (de) |
KR (1) | KR20120095400A (de) |
CN (1) | CN102667085A (de) |
DE (1) | DE102009055738A1 (de) |
RU (1) | RU2522234C2 (de) |
WO (1) | WO2011064050A1 (de) |
Cited By (10)
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WO2013009240A1 (en) * | 2011-07-11 | 2013-01-17 | Scania Cv Ab | Method and device for testing a liquid |
WO2013127804A1 (de) * | 2012-03-02 | 2013-09-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Fördereinheit für ein flüssiges additiv zur abgasnachbehandlung |
WO2013156286A1 (de) * | 2012-04-19 | 2013-10-24 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Vorrichtung zum bereitstellen eines flüssigen additivs |
WO2014063760A1 (en) * | 2012-10-25 | 2014-05-01 | Kautex Textron Gmbh & Co. Kg | Device for storing and delivering a liquid additive, in particular for catalytic exhaust gas nox removal in a motor vehicle |
WO2014108148A1 (de) * | 2013-01-08 | 2014-07-17 | Hydac Electronic Gmbh | Vorrichtung zur ermittlung funktionsrelevanter eigenschaften von fluiden |
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US20160195421A1 (en) * | 2012-12-20 | 2016-07-07 | Continental Automotive Gmbh | Reducing Agent Tank |
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US9708959B2 (en) * | 2013-07-11 | 2017-07-18 | Ford Global Technologies, Llc | Filtering method for intermittent ultrasonic level sensors |
DE102013108158A1 (de) | 2013-07-30 | 2015-02-19 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zur Herstellung eines Tanks mit einem kalibrierten Sensor |
DE102013108505A1 (de) * | 2013-08-07 | 2015-03-05 | Emitec Denmark A/S | Verfahren zum Bestimmen der Qualität von Reduktionsmittel |
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DE112015004193T5 (de) * | 2014-09-15 | 2017-06-01 | Tenneco Automotive Operating Company Inc. | Vertikales Ultraschallzersetzungsrohr |
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US9465000B1 (en) | 2015-08-18 | 2016-10-11 | Intellectual Reserves, LLC | System and method for electronically determining fluid parameters |
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JP2014521931A (ja) * | 2011-07-11 | 2014-08-28 | スカニア シーブイ アクチボラグ | 液体を試験するための方法およびデバイス |
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RU2564687C2 (ru) * | 2011-07-11 | 2015-10-10 | Сканиа Св Аб | Способ и устройство для тестирования жидкости |
WO2013127804A1 (de) * | 2012-03-02 | 2013-09-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Fördereinheit für ein flüssiges additiv zur abgasnachbehandlung |
US9556774B2 (en) | 2012-03-02 | 2017-01-31 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Conveying unit for a liquid additive for exhaust gas after-treatment, tank for storing liquid additive, motor vehicle having the conveying unit and method for determining a liquid additive quantity in a tank |
CN104204436A (zh) * | 2012-03-02 | 2014-12-10 | 排放技术有限公司 | 用于在废气后处理中使用的液体添加剂的输送单元 |
RU2599091C2 (ru) * | 2012-04-19 | 2016-10-10 | Эмитек Гезельшафт Фюр Эмиссионстехнологи Мбх | Устройство для обеспечения жидкой добавки |
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US9512768B2 (en) | 2012-04-19 | 2016-12-06 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Device for supplying a liquid additive and motor vehicle having the device |
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CN104755717A (zh) * | 2012-10-25 | 2015-07-01 | 考特克斯·特克斯罗恩有限公司及两合公司 | 用于储存和输送液体添加剂、特别是用于催化机动车中废气脱硝的液体添加剂的装置 |
WO2014063760A1 (en) * | 2012-10-25 | 2014-05-01 | Kautex Textron Gmbh & Co. Kg | Device for storing and delivering a liquid additive, in particular for catalytic exhaust gas nox removal in a motor vehicle |
JP2016501377A (ja) * | 2012-12-14 | 2016-01-18 | コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツングContinental Automotive GmbH | 液体の充填レベルの超音波測定方法 |
US20160195421A1 (en) * | 2012-12-20 | 2016-07-07 | Continental Automotive Gmbh | Reducing Agent Tank |
US10001399B2 (en) * | 2012-12-20 | 2018-06-19 | Continental Automotive Gmbh | Reducing agent tank |
WO2014108148A1 (de) * | 2013-01-08 | 2014-07-17 | Hydac Electronic Gmbh | Vorrichtung zur ermittlung funktionsrelevanter eigenschaften von fluiden |
CN106164432A (zh) * | 2014-04-02 | 2016-11-23 | 卡特彼勒公司 | 用于检测尿素沉积物形成的装置和方法 |
CN106164432B (zh) * | 2014-04-02 | 2018-11-30 | 珀金斯发动机有限公司 | 用于检测尿素沉积物形成的装置和方法 |
WO2019105774A1 (de) * | 2017-11-28 | 2019-06-06 | Robert Bosch Gmbh | Ultraschallsensor, tankeinbaueinheit mit einem ultraschallsensor |
Also Published As
Publication number | Publication date |
---|---|
KR20120095400A (ko) | 2012-08-28 |
US20130074590A1 (en) | 2013-03-28 |
RU2012126529A (ru) | 2014-01-10 |
RU2522234C2 (ru) | 2014-07-10 |
JP5680104B2 (ja) | 2015-03-04 |
JP2013512375A (ja) | 2013-04-11 |
EP2504539A1 (de) | 2012-10-03 |
DE102009055738A1 (de) | 2011-06-09 |
CN102667085A (zh) | 2012-09-12 |
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