WO2005038205A1 - Brennkraftmaschine mit abgasnachbehandlungssystem - Google Patents
Brennkraftmaschine mit abgasnachbehandlungssystem Download PDFInfo
- Publication number
- WO2005038205A1 WO2005038205A1 PCT/DE2004/001692 DE2004001692W WO2005038205A1 WO 2005038205 A1 WO2005038205 A1 WO 2005038205A1 DE 2004001692 W DE2004001692 W DE 2004001692W WO 2005038205 A1 WO2005038205 A1 WO 2005038205A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal combustion
- combustion engine
- exhaust gas
- active substance
- injection
- Prior art date
Links
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
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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 first relates to an internal combustion engine, in particular with direct fuel injection, with an exhaust gas aftertreatment system for reducing pollutants in the exhaust gas, which comprises: a storage container with a liquid active substance, a conveying device for conveying the active substance, and an injection device for injecting the active substance into the exhaust.
- Nitrogen oxide emissions from internal combustion engines can be used, for example, so-called selective catalytic reduction (SCR).
- SCR selective catalytic reduction
- a defined amount of a reducing agent for example urea
- urea is solid under normal ambient conditions, it is present in a urea-water solution that is injected into the exhaust gas.
- the urea reacts with water to form ammonia and carbon dioxide.
- the ammonia reduces nitrogen oxides contained in exhaust gas to nitrogen, 'while producing water as a byproduct.
- the object of the present invention is to improve the efficiency of the exhaust gas aftertreatment.
- the exhaust gas aftertreatment system comprises a pressure accumulator into which the conveying device conveys, in which the active substance can be stored under pressure, and to which the
- a first advantage of the internal combustion engine according to the invention is that the active substance can be atomized particularly well by the injection device owing to the increased pressure in the pressure accumulator, which in principle is then also present in the injection device, so that the spray that arises as a result has good preparation quality. This leads to an improved conversion rate of the active substance in the exhaust gas. Di? Intermediate storage of the active substance in the pressure accumulator is permitted, in addition, if necessary, the use of a conveyor device with a smaller delivery capacity, since With a corresponding system configuration, "consumption peaks" are not covered by an increased delivery rate, but rather by the active substance temporarily stored in the pressure accumulator.
- the conveying device comprises a prefeed pump and a high-pressure pump.
- the pre-feed pump can be, for example, a diaphragm pump, the high-pressure pump a piston pump.
- the high-pressure pump a piston pump.
- the pressure accumulator is connected to a pressure control device. This allows either a high pressure constancy or, in the case of an adjustable pressure control device, a variability of the pressure in the pressure accumulator, which enables the pressure in the pressure accumulator to be optimally adapted to the current operating state of the exhaust gas aftertreatment system and / or the internal combustion engine.
- a particularly advantageous embodiment of the internal combustion engine according to the invention is characterized in that it comprises a control and / or regulating device which measures the delivery rate of the delivery device, the pressure in the pressure accumulator, the time of injection of the active substance, and / or the duration of an injection de * Active substance controls depending on the operating state of the internal combustion engine. This allows a particularly economical consumption of the Active substance with an optimal conversion rate of the active substance in the exhaust gas.
- the cost of the internal combustion engine according to the invention can be reduced if the conveyor, the
- Accumulator, and / or the injector are of the type used in direct injection fuel systems.
- those fuel systems that work with a fuel rail (“common rail") come into question here.
- the active substance comprises urea.
- the urea is generally bound in an aqueous solution and is harmless, but enables an effective reduction of the nitrogen oxides in the exhaust gas.
- the pressure accumulator can be heated.
- the urea-water solution commonly used has the property of freezing at temperatures below minus 11 ° C, that is to say from the liquid to the solid state. Due to the heatability of the pressure accumulator
- the invention also relates to a method for operating an internal combustion engine of the above type. It is proposed that the delivery capacity of the delivery device, the pressure in the pressure accumulator, the time of injection of the active substance, and / or the duration of the injection of the active substance be current Depend on the operating parameters of the internal combustion engine. This results in a particularly effective reduction in pollutant emissions in the exhaust gas while at the same time using less active substance.
- the operating parameters be a rotational speed of a crankshaft, a torque of the internal combustion engine, a fuel mass injected into a combustion chamber, a temperature of the internal combustion engine, a temperature of the ambient air, a humidity of the ambient air, a temperature upstream and / or downstream of a catalytic converter , an N0 ⁇ - and / or NH 3 content in the exhaust gas, and / or a fuel-air ratio in the combustion chamber, or each include an equivalent size.
- Many of these operating parameters be a rotational speed of a crankshaft, a torque of the internal combustion engine, a fuel mass injected into a combustion chamber, a temperature of the internal combustion engine, a temperature of the ambient air, a humidity of the ambient air, a temperature upstream and / or downstream of a catalytic converter , an N0 ⁇ - and / or NH 3 content in the exhaust gas, and / or a fuel-air ratio in the combustion chamber, or each include an equivalent size.
- Active substance required data can be determined using maps of the internal combustion engine. This could save an additional control unit, and certain quantity corrections could be made in parallel on the basis of corresponding correction coefficients used in the Control of the internal combustion engine are calculated to be performed.
- Figure 1 is a schematic diagram of an internal combustion engine with an exhaust gas aftertreatment system
- FIG. 2 shows the input and output variables for controlling or regulating the exhaust gas aftertreatment system from FIG. 1,
- an internal combustion engine bears the reference number 10 overall. It comprises a plurality of combustion chambers, of which only one is shown in FIG. 1 with reference number 12 for reasons of illustration.
- Combustion air enters the combustion chamber 12 via an inlet valve 14 and an intake pipe 16.
- a temperature TAMS and a humidity FANS of the intake ambient air are detected by sensors 15 and 17.
- the hot combustion exhaust gases are discharged from the combustion chamber 12 via an exhaust valve 18 and an exhaust pipe 20.
- a crankshaft 21 is rotated.
- Fuel enters combustion chamber 12 directly through a fuel injector 22.
- the injected fuel is diesel fuel.
- the fuel Einsprit ⁇ vorric 'ntung 22 manifold 24 ( "rail") is connected to a fuel.
- the fuel is stored under high pressure. It reaches the fuel collecting line 24 through a high-pressure fuel pump 26, which is fed by a prefeed pump 28. This delivers from a fuel tank 30.
- the pressure in the fuel manifold 24 is detected by a sensor 32 and set via a pressure regulator 34.
- a quantity control valve 36 is used to adjust the delivery rate of the high-pressure fuel pump 26.
- the above-mentioned components 22 to 36 are part of a fuel system 37.
- the latter includes an exhaust gas aftertreatment system 38.
- This comprises an oxidation catalytic converter 39 arranged in the exhaust pipe 20, which converts NO into NO 2 , and a catalytic converter 40 with which the pollutants initially contained in the exhaust gas are reduced.
- a temperature sensor 41 for detecting the temperature TSCR of the exhaust gas and an injection device 42 are arranged upstream of the catalytic converter 40 in the exhaust pipe 20.
- An active substance, urea 43 in the present exemplary embodiment can be injected through this into the exhaust gas flowing in the exhaust pipe 20. For this purpose, the urea is dissolved in water, so a urea-water solution is ultimately injected.
- a lambda probe 45 and an NO : ⁇ sensor 47 are present behind the catalytic converter 40.
- the urea-water solution 43 is stored in a urea container 44.
- a prefeed pump 46 urges the urea-water solution 43 from the urea container 44 to a high-pressure pump 48 (the two Pumps 46 and 48 together form a conveyor 49).
- the injection device 42 is in turn connected to it.
- the pressure in the urea pressure accumulator 50 is detected by a pressure sensor 52.
- the pressure in the pressure accumulator 50 is set by a pressure regulator 54, the delivery rate of the high-pressure urea pump 48 by a quantity control valve 56. All components of the exhaust gas aftertreatment system 38, with the exception of the catalytic converter 40 and the injection device 42, can be heated by an electric heating device 58.
- the operation of the internal combustion engine 10, including the fuel system 37, is controlled or regulated by a control and regulating device 60.
- This receives signals from numerous sensors, for example the two pressure sensors 32 and '52, but still further sensors, not shown in FIG. 1, and controls corresponding adjusting and regulating devices, for example the injectors 22 and 42, the quantity control valves 36 and 56 and the Pressure regulators 34 and 54, which result in the internal combustion engine 10 delivering a desired output with the lowest possible fuel consumption and optimal emission behavior.
- the operation of the exhaust gas aftertreatment system 38 is also controlled or regulated by the control and regulating device 60.
- a processing block for this purpose.
- This includes a speed N of the crankshaft 21, a relative air filling RL in the combustion chamber 12, an in Relative fuel mass RK injected into combustion chamber 12 by fuel injection device 22, a temperature TMOT of internal combustion engine 10 (for example a cooling water or cylinder head temperature), and the fuel-air ratio in combustion chamber 12, which is usually represented by the air ratio LAM3DA.
- Further variables can be a temperature TSCR of the catalyst 40, a relative humidity FANS of the intake air, for example a temperature TANS of the ambient air, or an MO ⁇ value.
- the manipulated variables required for the operation of the exhaust gas aftertreatment system 38 are determined from these variables. This includes a pressure PR_HDS in the urea pressure accumulator 50, one
- Control voltage U_HDS for the quantity control valve 56 which in turn sets a delivery quantity M_HDS of the delivery device 49, an injection duration TI_HDS of the urea 43 injection device 42, and a bit B_HEIZ, by means of which the heating device 58 is switched on or off.
- the pressure PR_HDS in the urea pressure accumulator 50 and the injection duration TI_HDS of the urea injection device 42 can, on the one hand, align the amount injected and, on the other hand, the degree of atomization of the urea / water solution 43 to the current operating conditions of the internal combustion engine 10. This ensures on the one hand an optimal implementation of the injected urea-water solution 43, which leads to a reduction in pollutant emissions, and on the other hand the urea-water reading 43 can be used very sparingly as it can be avoided that too much ammonia is generated, but at the same time an almost 100% conversion rate can be guaranteed.
- the pressure in the urea pressure accumulator 50 can be very high and in the range from 50 bar, possibly even a few hundred bar to over a thousand bar.
- the components used for the exhaust gas aftertreatment system 38 can be similar to the components of the fuel system 37. If necessary, identical components can also be used at least in some areas.
- the processing patterns used in processing block 62 can also be similar to or even identical to those used to control or regulate the
- Fuel system 37 can be used.
- pressure PR_HDS will usually depend primarily on the speed N of crankshaft 21 and on the temperature TSCR of the exhaust gas.
- a constant pressure in the urea pressure accumulator 50 can be set via the pressure regulator 54 and the quantity control valve 56.
- the urea-water solution 43 is injected directly into the exhaust pipe '20 by the urea injection device 42. It is also possible, however, that air is also fed into the urea injection device 42 and this is mixed with the urea-water solution 43 in the urea injection device 42 or when it emerges from it.
- urea 43 is mentioned as the active substance. It goes without saying that with the described configuration of the exhaust gas aftertreatment system 38 as the active substance, however, any other active agent can be used as long as it can be injected into the exhaust gas.
- urea components for example
- urea pressure accumulator for example
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005518349A JP2006515657A (ja) | 2003-09-23 | 2004-07-28 | 排出ガス後処理システムを備えた内燃機関 |
US10/573,184 US20070163239A1 (en) | 2003-09-23 | 2004-07-28 | Internal combustion engine with exhaust treatment system |
EP04762537A EP1668230A1 (de) | 2003-09-23 | 2004-07-28 | Brennkraftmaschine mit abgasnachbehandlungssystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346220.1 | 2003-09-23 | ||
DE10346220A DE10346220A1 (de) | 2003-09-23 | 2003-09-23 | Brennkraftmaschine mit Abgasnachbehandlungssystem |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005038205A1 true WO2005038205A1 (de) | 2005-04-28 |
Family
ID=34306270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/001692 WO2005038205A1 (de) | 2003-09-23 | 2004-07-28 | Brennkraftmaschine mit abgasnachbehandlungssystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070163239A1 (de) |
EP (1) | EP1668230A1 (de) |
JP (1) | JP2006515657A (de) |
DE (1) | DE10346220A1 (de) |
WO (1) | WO2005038205A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005099874A1 (de) * | 2004-04-15 | 2005-10-27 | Robert Bosch Gmbh | Verfahren und vorrichtung zum einbringen eines reagenzmittels in einen abgaskanal einer brennkraftmaschine |
DE102009003101A1 (de) | 2009-05-14 | 2010-11-18 | Robert Bosch Gmbh | Antriebsaggregat sowie Verfahren zum Betreiben eines Antriebsaggregats |
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US7591132B2 (en) * | 2006-09-20 | 2009-09-22 | Gm Global Technology Operations, Inc. | Apparatus and method to inject a reductant into an exhaust gas feedstream |
DE102006061732A1 (de) * | 2006-12-28 | 2008-07-03 | Robert Bosch Gmbh | Vorrichtung zum Dosieren eines flüssigen Reduktionsmittels |
DE102007034314B4 (de) * | 2007-07-24 | 2020-10-15 | Emcon Technologies Germany (Augsburg) Gmbh | Baugruppe sowie Verfahren zur Einbringung eines Reduktionsmittels in eine Abgasleitung |
DE102008039687B4 (de) * | 2008-08-26 | 2015-12-10 | Volkswagen Ag | Verfahren zur Nachbehandlung eines Abgasstroms eines Verbrennungsmotors |
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US8459012B2 (en) * | 2008-11-19 | 2013-06-11 | Caterpillar Inc. | Method for purging a dosing system |
US20100170225A1 (en) * | 2009-01-08 | 2010-07-08 | Caterpillar Inc. | Exhaust treatment system having a reductant supply system |
US20110283685A1 (en) * | 2009-04-27 | 2011-11-24 | Kotrba Adam J | Exhaust Treatment System With Hydrocarbon Lean NOx Catalyst |
US20120036843A1 (en) * | 2010-08-11 | 2012-02-16 | Agco Corporation | Air filter aspiration and aspiration fan drive for use with exhaust treatment |
DE102010042461A1 (de) * | 2010-10-14 | 2011-09-29 | Robert Bosch Gmbh | Dosiersystem für eine Vorrichtung zur Nachbehandlung von Abgasen |
DE102012002059A1 (de) * | 2012-02-03 | 2013-08-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zum Betrieb einer Dosiervorrichtung |
DE102012214369A1 (de) | 2012-08-13 | 2014-02-13 | Robert Bosch Gmbh | Abgasnachbehandlungsanordnung sowie Verfahren zur Eindosierung eines Reduktionsmittels in den Abgasstrang einer Brennkraftmaschine |
US9222388B2 (en) | 2013-02-28 | 2015-12-29 | Tenneco Automotive Operating Company Inc. | Urea common rail |
US20140241948A1 (en) * | 2014-05-07 | 2014-08-28 | Caterpillar Inc. | Reductant delivery system |
DE102014225200A1 (de) | 2014-12-09 | 2016-06-09 | Robert Bosch Gmbh | Verfahren und Steuereinheit zur Ansteuerung einer Hubkolbenpumpe |
DE102015212922A1 (de) | 2015-07-10 | 2017-01-12 | Robert Bosch Gmbh | Druckspeichereinrichtung, Abgasnachbehandlungssystem, Kraftfahrzeug |
DE102015118572B4 (de) | 2015-10-30 | 2022-10-06 | Purem GmbH | Verfahren zur Abgabe von Reaktionsmittel in den Abgasstrom einer Brennkraftmaschine |
DE102016215380A1 (de) | 2016-08-17 | 2018-02-22 | Robert Bosch Gmbh | Verfahren zur Erkennung einer blockierten Druckleitung |
DE102017204972A1 (de) | 2017-03-24 | 2018-09-27 | Robert Bosch Gmbh | Verfahren zur Steuerung eines SCR-Systems mit zwei Dosierventilen |
DE102017204973A1 (de) | 2017-03-24 | 2018-09-27 | Robert Bosch Gmbh | Verfahren zur Steuerung eines SCR-Systems mit zwei Dosierventilen |
DE102018203757A1 (de) | 2017-04-25 | 2018-10-25 | Robert Bosch Gmbh | Verfahren zum Betreiben eines SCR-Systems mit zumindest zwei Dosierventilen |
DE102017209836A1 (de) | 2017-06-12 | 2018-12-13 | Hyundai Motor Company | Kraftstoffeinspritzsystem, Kraftstoffeinspritzverfahren sowie Automobil |
DE102017211216A1 (de) | 2017-06-30 | 2019-01-03 | Robert Bosch Gmbh | Verfahren zum Abgleich eines Drucksensors in einem SCR-System |
DE102017212979A1 (de) | 2017-07-27 | 2019-01-31 | Robert Bosch Gmbh | Verfahren zur Prüfung eines Signals eines Stickoxid-Sensors |
DE102017216787A1 (de) | 2017-09-22 | 2019-03-28 | Robert Bosch Gmbh | Verfahren zur Steuerung einer Temperatur eines SCR-Katalysators |
DE102017223365A1 (de) | 2017-12-20 | 2019-06-27 | Robert Bosch Gmbh | Verfahren zum Betrieb eines Hydrauliksystems |
DE102018200471A1 (de) | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | Verfahren zur Detektion einer Funktionsstörung eines eine Förderpumpe aufweisenden Fördermoduls eines SCR-Katalysatorsystems |
DE102018200467A1 (de) * | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | Verfahren zum Einlernen von mindestens einem Pumpenmerkmal einer Pumpe eines Fördermoduls eines SCR-Katalysatorsystems |
DE102018200469A1 (de) | 2018-01-12 | 2019-07-18 | Robert Bosch Gmbh | Verfahren zur Überwachung einer Veränderung eines Pumpenmerkmals über Lebenszeit eines eine Förderpumpe aufweisenden Fördermoduls eines SCR-Katalysatorsystems |
DE102018200572A1 (de) * | 2018-01-15 | 2019-07-18 | Robert Bosch Gmbh | Verfahren zur Überprüfung eines SCR-Systems mit zumindest zwei Dosierventilen |
DE102018205132A1 (de) | 2018-04-05 | 2019-10-10 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Abgasnachbehandlungssystems |
DE102018205137A1 (de) | 2018-04-05 | 2019-10-10 | Robert Bosch Gmbh | Verfahren zur Überprüfung eines SCR-Systems mit zumindest zwei Dosierventilen |
DE102018212990A1 (de) | 2018-08-03 | 2020-02-06 | Robert Bosch Gmbh | Verfahren zum Betreiben eines SCR-Systems im Störfall |
DE102018213379A1 (de) * | 2018-08-09 | 2020-02-13 | Robert Bosch Gmbh | Verfahren zur Überwachung eines SCR-Katalysators |
DE102018213380A1 (de) * | 2018-08-09 | 2020-02-13 | Robert Bosch Gmbh | Verfahren zur Überwachung eines SCR-Katalysators |
DE102018216402A1 (de) * | 2018-09-26 | 2020-03-26 | Robert Bosch Gmbh | Verfahren zur Qualitätserkennung eines Reduktionsmittels |
DE102018221683A1 (de) | 2018-12-13 | 2020-06-18 | Hyundai Motor Company | Verfahren zum Betreiben eines Kraftstoffeinspritzsystems eines Kraftfahrzeugs und Kraftstoffeinspritzsystem |
DE102019218170A1 (de) * | 2019-11-25 | 2021-05-27 | Robert Bosch Gmbh | Verfahren zur Bestimmung einer Füllmenge einer Flüssigkeit in einem Behälter sowie Vorrichtung hierzu |
DE102020206336A1 (de) | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | System und Verfahren zur Temperaturregelung eines Dosierventils |
DE102020206335A1 (de) | 2020-05-20 | 2021-11-25 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Betreiben eines Förder- und Dosiersystems |
DE102020206789A1 (de) | 2020-05-29 | 2021-12-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | System zur Abgasnachbehandlung und Verfahren zu dessen Betrieb |
DE102021121029A1 (de) | 2021-08-12 | 2023-02-16 | Volkswagen Aktiengesellschaft | Dosiersystem zur Eindosierung eines Reduktionsmittels in die Abgasanlage eines Verbrennungsmotors |
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2003
- 2003-09-23 DE DE10346220A patent/DE10346220A1/de not_active Withdrawn
-
2004
- 2004-07-28 EP EP04762537A patent/EP1668230A1/de not_active Withdrawn
- 2004-07-28 US US10/573,184 patent/US20070163239A1/en not_active Abandoned
- 2004-07-28 WO PCT/DE2004/001692 patent/WO2005038205A1/de active Application Filing
- 2004-07-28 JP JP2005518349A patent/JP2006515657A/ja active Pending
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DE19925671A1 (de) * | 1998-06-04 | 1999-12-09 | Toyota Motor Co Ltd | Abgasemissionsreinigungsgerät für eine Brennkraftmaschine |
DE10139142A1 (de) * | 2001-08-09 | 2003-02-20 | Bosch Gmbh Robert | Abgasbehandlungseinheit und Messvorrichtung zur Ermittlung einer Konzentration einer Harnstoff-Wasser-Lösung |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005099874A1 (de) * | 2004-04-15 | 2005-10-27 | Robert Bosch Gmbh | Verfahren und vorrichtung zum einbringen eines reagenzmittels in einen abgaskanal einer brennkraftmaschine |
DE102009003101A1 (de) | 2009-05-14 | 2010-11-18 | Robert Bosch Gmbh | Antriebsaggregat sowie Verfahren zum Betreiben eines Antriebsaggregats |
Also Published As
Publication number | Publication date |
---|---|
US20070163239A1 (en) | 2007-07-19 |
DE10346220A1 (de) | 2005-04-14 |
EP1668230A1 (de) | 2006-06-14 |
JP2006515657A (ja) | 2006-06-01 |
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