DE4007516A1 - Reduction of exhaust pollution of diesel engine - by fitting particle filter and oxidising catalyser - Google Patents

Reduction of exhaust pollution of diesel engine - by fitting particle filter and oxidising catalyser

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Publication number
DE4007516A1
DE4007516A1 DE19904007516 DE4007516A DE4007516A1 DE 4007516 A1 DE4007516 A1 DE 4007516A1 DE 19904007516 DE19904007516 DE 19904007516 DE 4007516 A DE4007516 A DE 4007516A DE 4007516 A1 DE4007516 A1 DE 4007516A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
exhaust gas
diesel engine
particle filter
exhaust
reduction
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
Application number
DE19904007516
Other languages
German (de)
Other versions
DE4007516C2 (en )
Inventor
Hans Houben
Manfred Hoecker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DEUTZ AKTIENGESELLSCHAFT, 51063 KOELN, DE
Original Assignee
Klockner-Humboldt-Deutz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust 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
    • F01N3/24Exhaust 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
    • F01N3/28Construction of catalytic reactors
    • F01N3/2882Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/04EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/06Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23Layout, e.g. schematics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52Systems for actuating EGR valves
    • F02M26/59Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • F02M26/60Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to air intake pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00Combinations of different methods of purification
    • F01N2250/02Combinations of different methods of purification filtering and catalytic conversion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00Engines characterised by air compression and subsequent fuel addition
    • F02B3/06Engines characterised by air compression and subsequent fuel addition with compression ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/09Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system

Abstract

The diesel engine has a superchanger (7) which is driven by an exhaust gas turbine (4). The turbine (4) is fitted in the exhaust pipe (5, 6) which is fitted with a particle filter (2). The supercharger is fitted in the combustion air pipe (8, 9). In the upstream direction from the exhaust gas turbine there is an oxidising catalyser (12) and behind this, the particle filter is mounted. An exhaust gas cooler (10) is mounted in the pipe (3) which connects the particle filter to the compressor inlet pipe (9). USE - Diesel engines.

Description

Die Erfindung betrifft einen Dieselmotor mit geringer Schadstoffemission und niedrigem Kraftstoffverbrauch, insbesondere nach dem Oberbegriff des Anspruches 1. The invention relates to a diesel engine with low emissions and low fuel consumption, in particular according to the preamble of claim 1.

Zunehmende Umweltverschmutzung und schwindende Energiereserven erfordern Brennkraftmaschinen mit geringer Schadstoffemission und niedrigem Kraftstoffverbrauch. Increasing pollution and dwindling energy reserves require engines with low emissions and low fuel consumption. Diese Forderungen gelten insbesondere auch für stationäre Brennkraftmaschinen, die den Vorschriften der 1986 novellierten Technischen Anleitung Luft (TA Luft) genügen müssen. These requirements also apply in particular for stationary internal combustion engines that must comply with the provisions of the 1986 revised Technical Instructions on Air Quality (TA Luft).

In der DE 36 01 703 werden Maßnahmen zur Verminderung der Schadstoffemission von Dieselmotoren beschrieben. In DE 36 01 703 measures to reduce the emission of pollutants from diesel engines are described. Es handelt sich dabei um eine Anordnung mit katalytisch beschichteten Partikelfiltern in den einzelnen Zweigen einer Abgasleitung kurz hinter den jeweiligen Zylinderköpfen in Verbindung mit einer Rückführung von gefiltertem Abgas in die Ansaugkanäle der einzelnen Zylinderköpfe. This is an arrangement with a catalytically coated particulate filters in the individual branches of an exhaust line just behind the respective cylinder heads in combination with a recirculation of filtered exhaust gas into the intake ports of the individual cylinders heads. Dadurch sollen die Partikelemission und die Emission des gasförmigen Schadstoffes NOX sowie durch die katalytische Beschichtung des Partikelfilters die gasförmigen Schadstoffe CO und HC vermindert werden. This is intended to particulate emissions and the emission of the gaseous pollutant NOX and be reduced by the catalytic coating of the particulate filter the gaseous pollutants CO and HC.

Ein Nachteil dieser Anordnung ist, daß die gerade bei Vollast besonders hohe Stickoxidemission nicht gesenkt werden kann, da in diesem Betriebsbereich wegen der thermischen Belastung des Motors keine Abgasrückführung möglich ist. A disadvantage of this arrangement is that the particularly high just at full load nitrogen oxide emissions can not be reduced, because in this operating range because of the thermal load of the engine exhaust gas recirculation is possible. Außerdem ist die katalytische Beschichtung eines Partikelfilters bei Rußbelegung weitgehend unwirksam. Moreover, the catalytic coating of a particulate filter with soot covering is largely ineffective.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die Schadstoffemission des Dieselmotors im gesamten Betriebsbereich zu minimieren. The present invention has for its object to minimize the emission of pollutants of the diesel engine throughout the operating range.

Die Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. The object is solved by the characterizing features of claim 1. Durch die Rückführung gekühlter Abgase ist auch bei Vollastbetrieb des Motors eine gewisse Abgasrückführung möglich ohne den Motor thermisch zu überlasten. By the recirculation of cooled exhaust gases a certain exhaust gas recirculation is also at full load operation of the engine thermal overloading possible without the motor. Die dabei ansteigende Rußemission ist unkritisch, da der Ruß im Partikelfilter zurückgehalten wird und das rückgeführte Abgas gereinigt ist. The thereby increasing soot emissions is not critical because the soot is retained in the particulate filter and the recirculated exhaust gas is cleaned.

Während die Abgasrückführung im gesamten Betriebsbereich der Dieselbrennkraftmaschine für eine Absenkung der Stickoxidemission sorgt, werden die unverbrannten Kohlenwasserstoffe und das Kohlenmonoxid durch einen Oxidationskatalysator beseitigt. While the exhaust gas recirculation in the entire operating range of the diesel engine, makes for a reduction of nitrogen oxide emissions, the unburned hydrocarbons and carbon monoxide are removed by an oxidation catalyst. Dessen Lage kurz hinter der Abgasturbine sichert durch die dort herrschende Temperatur seine Wirksamkeit bei schon relativ niedriger Last. Its location just behind the exhaust turbine assured by the prevailing temperature its effectiveness in already relatively low load.

Eine vorteilhafte Ausgestaltung der Erfindung gestattet eine freie Wahl der Abgasrückführmenge. An advantageous embodiment of the invention allows a free choice of the EGR amount. Während bei höheren Lasten ein natürliches Druckgefälle zwischen der Abgasleitung und der Verbrennungsluftleitung besteht, kann es bei Teillast notwendig werden, die Ansaugluft zu drosseln, um die gewünschte Abgasrückführmenge zu verwirklichen. While at higher loads a natural pressure gradient between the exhaust pipe and combustion air line is, it may be necessary to throttle the intake air to achieve the desired EGR amount at partial load. Die Drossel in der Abgasrückführleitung dient zur Begrenzung der Abgasrückführmenge bei höheren Lasten. The throttle in the exhaust gas recirculation line is used to limit the amount of exhaust gas recirculation at higher loads.

Eine weitere vorteilhafte Ausbildung der Erfindung gestattet das Partikelfilter auch während des Betriebes des Dieselmotors zu regenerieren, um auf diese Weise einen kontinuierlichen Motorbetrieb zu gewährleisten. A further advantageous embodiment of the invention allows to regenerate the particulate filter during operation of the diesel engine in order to ensure in this manner a continuous motor operation.

Weitere Merkmale der Erfindung gehen aus der nachfolgenden Beschreibung und der Zeichnung hervor, in der ein Ausführungsbeispiel der Erfindung schematisch dargestellt ist. Further features of the invention will become apparent from the following description and the drawing, in which an embodiment of the invention is shown schematically.

Die Figur zeigt eine schematische Darstellung des Dieselmotors mit Abgasrückführung und Abgasnachbehandlungsanlage. The figure shows a schematic representation of the diesel engine with exhaust gas recirculation and exhaust gas aftertreatment system.

Der Dieselmotor 14 ist als 8-Zylinder-V-Motor ausgebildet. The diesel engine 14 is formed as an 8-cylinder V-engine. Er ist über eine erste Abgasleitung 5 mit einer Abgasturbine 4 eine Turboladers 1 verbunden, die einen Lader 7 antreibt. It is connected via a first exhaust pipe 5 having an exhaust gas turbine 4, a turbocharger 1, which drives a supercharger. 7

Nach Verlassen der Abgasturbine 4 strömen die Abgase durch einen Oxidationskatalysator 12 , der in einer zweiten Abgasleitung 6 kurz hinter der Abgasturbine 4 angeordnet ist. After leaving the exhaust turbine 4. The exhaust gases flow through an oxidation catalyst 12 which is disposed in a second exhaust gas line 6 just after the exhaust gas turbine. 4 Danach gelangen die Abgase über eine Regenerationsvorrichtung 13 in ein Partikelfilter 2 . Thereafter, the exhaust gases pass via a regeneration device 13 into a particle filter. 2 Diesem schließt sich eine dritte Abgasleitung 15 an, von der eine Abgasrückführleitung 3 abzweigt. This is a third exhaust gas line 15 connects, by an exhaust gas recirculation line branches off. 3 In der Abgasrückführleitung 3 befindet sich ein Abgaskühler 10 und eine regelbare Drossel 11 . In the exhaust gas recirculation line 3 there is an exhaust gas cooler 10, and a variable throttle. 11

Die Abgasrückführleitung 3 mündet in eine Ansaugluftleitung 9 , die den Lader 7 mit einem Luftfilter 16 verbindet. The exhaust gas recirculation line 3 opens into an intake air passage 9, which connects the charger 7 with an air filter sixteenth In der Ansaugleitung 9 befindet sich eine regelbare Drossel 11 a. In the intake pipe 9 there is a variable throttle 11a. Der Lader 7 ist über eine Ladeluftleitung 8 und einen Ladeluftkühler 17 mit dem Dieselmotor 14 verbunden. The loader 7 is connected via a charge air line 8 and a charge air cooler 17 to the diesel engine fourteenth

Die Anlage funktioniert folgendermaßen: The system works as follows:
Die heißen, ungereinigten Abgase des Dieselmotors 14 gelangen über die erste Abgasleitung 5 zur Abgasturbine 4 , werden dort entspannt und strömen in den Oxidationskatalysator 12 . The hot, unpurified exhaust gases of the diesel engine 14 pass through the first exhaust pipe 5 to the exhaust gas turbine 4 can be expanded there, and flow into the oxidation catalyst 12th Dort werden die nicht verbrannten Kohlenwasserstoffe und das Kohlenoxid oxidiert. There, the unburned hydrocarbons and the carbon monoxide are oxidized. Das so vorgereingte Abgas strömt durch die zweite Abgasleitung 6 und die Regenerationsvorrichtung 13 zum Partikelfilter 2 . The so vorgereingte exhaust gas flows through the second exhaust line 6 and the regeneration device 13 to the particulate filter. 2 Dort werden die Rußpartikel ausgefiltert, so daß sich in der dritten Abgasleitung 15 gereinigtes Abgas befindet. There, the soot particles are filtered out so that cleaned exhaust gas 15 is in the third exhaust gas line. Von der dritten Abgasleitung 15 strömt das gereinigte Abgas durch die Abgasrückführleitung 3 zum Abgaskühler 10 , wo es gekühlt wird. Of the third exhaust pipe 15, the purified exhaust gas through the exhaust gas recirculation line 3 flows to the exhaust gas cooler 10, where it is cooled. Die über die regelbare Drossel 11 dosierte Abgasrückführmenge gelangt in die vom Luftfilter 16 zum Lader 7 führende Ansaugluftleitung 9 . The dosed via the variable throttle 11 exhaust gas recirculation amount reaches the leading from the air filter 16 to the intake-air charger 7. 9 In der Ansaugluftleitung 9 wird bei Teillast der zur Förderung der Abgasrückführmenge erforderliche Unterdruck mit der regelbaren Ansaugluftdrossel 11 a erzeugt. In the induction manifold 9 of the required for the promotion of the exhaust gas recirculation amount with the variable vacuum Ansaugluftdrossel 11 a is formed at part load. Die Drosseln 11, 11 a dienen zum Steuern einer optimalen Rückführmenge im gesamten Betriebsbereich des Dieselmotors. The throttles 11, 11 a are used to control an optimum recirculation quantity in the entire operating range of the diesel engine. Dazu können bekannte elektronische Steuermittel verwendet werden. These known electronic control means can be used. Die Ladeluft vermischt mit der rückgeführten Abgasmenge gelangt über den Lader 7 , die Ladeluftleitung 8 und den Ladeluftkühler 17 zum Dieselmotor 14 . The charge air is mixed with the recirculated exhaust gas quantity passes via the charger 7, the charge air line 8 and the intercooler 17 to the diesel engine fourteenth

Das gereinigte Abgas in der Ladeluft bewirkt eine Absenkung der Stickoxidemission ohne den Verschleiß des Dieselmotors zu erhöhen. The purified exhaust gas in the charge air causes a reduction of nitrogen oxide emissions without the wear of the diesel engine to increase. Durch die Rückführung gekühlten Abgases ist eine Abgasrückführung auch bei hohen Lasten möglich, die zur Absenkung der dann besonders hohen Stickoxidemission führt. By recirculating cooled exhaust gas, exhaust gas recirculation is possible even at high loads, which leads to the lowering of the then very high emissions of nitrogen oxides. Die Anordnung des Oxidationskatalysators kurz hinter der Abgasturbine macht diesen schon bei niedrigen Lasten wirksam. The arrangement of the oxidation catalyst just behind the exhaust turbine makes this already effective at low loads. Auf diese Weise wird im gesamten Betriebsbereich des Motors eine weitgehende Abgasreinigung erreicht. In this way, a high degree of emission control is achieved of the motor in the entire operating range. Die Regenerationsvorrichtung 13 gestattet eine vollautomatische Regeneration des Partikelfilters 2 während des Betriebes des Dieselmotors. The regeneration device 13 allows a fully automatic regeneration of the particulate filter 2 during the operation of the diesel engine. Das saubere rückgeführte Abgas verschmutzt weder den Abgaskühler 10 noch erhöht es den Motorverschleiß. The clean recirculated exhaust gas does not pollute the exhaust gas cooler 10 nor does it increase engine wear. Der Oxidationskatalysator 12 ist gegen partikelbeladene Abgase unempfindlich und behält seine Wirksamkeit über lange Zeit. The oxidation catalyst 12 is not sensitive to particle-loaded exhaust gases and maintains its effectiveness over time. Aufgrund dieser Tatsachen erfüllt die Anlage die strengen Auflagen der TA Luft im Dauerbetrieb. From these facts, the equipment meets the strict requirements of the Clean Air Act in continuous operation.

Claims (3)

  1. 1. Dieselmotor mit einer Abgasleitung ( 5, 6 ), in der eine Abgasturbine ( 4 ) eines Abgasturboladers ( 1 ) und ein Partikelfilter ( 2 ) angeordnet sind und mit einer Verbrennungsluftleitung ( 8, 9 ), in der ein Lader ( 7 ) des Abgasturboladers ( 1 ) vorgesehen ist, sowie mit einer Abgasrückführleitung ( 3 ), die in Strömungsrichtung hinter dem Partikelfilter ( 2 ) von der Abgasleitung ( 5, 6 ) abzweigt und diese mit der Verbrennungsluftleitung ( 8, 9 ) verbindet, dadurch gekennzeichnet, daß in Strömungsrichtung hinter der Abgasturbine ( 4 ) ein Oxidationskatalysator ( 12 ) und hinter diesem das Partikelfilter ( 2 ) in der Abgasleitung ( 6 ) angeordnet sind und daß in der Abgasrückführleitung ( 3 ) ein Abgaskühler ( 10 ) vorgesehen ist. 1. Diesel engine with an exhaust line (5, 6) in which an exhaust gas turbine (4) of an exhaust gas turbocharger (1) and a particulate filter (2) are arranged, and with a combustion air line (8, 9), in which a supercharger (7) of the is provided the exhaust gas turbocharger (1), and also branches off to an exhaust gas recirculation line (3) in the flow direction after the particle filter (2) from the exhaust line (5, 6) and this with the combustion air line (8, 9), characterized in that in downstream of the exhaust gas turbine (4), an oxidation catalyst (12) and behind the particulate filter (2) in the exhaust line (6), and in that an exhaust gas cooler (10) is provided in the exhaust gas recirculation line (3).
  2. 2. Dieselmotor nach Anspruch 1, dadurch gekennzeichnet, daß in der Verbrennungsluftleitung ( 8, 9 ) in Strömungsrichtung vor der Einmündung der Abgasrückführleitung ( 3 ) und in der Abgasrückführleitung ( 3 ) Drosseln ( 11, 11 a) angeordnet sind, die im gesamten Betriebsbereich des Dieselmotors regelbar sind. 2. Diesel engine according to claim 1, characterized in that in the combustion air line (8, 9) upstream of the confluence of the exhaust gas recirculation line (3) and in the exhaust gas recirculation line (3) throttles (11, 11 a) are arranged in the entire operating range can be controlled the diesel engine.
  3. 3. Dieselmotor nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dem Partikelfilter ( 2 ) eine Regenerationsvorrichtung ( 13 ) zugeordnet ist, wobei die Regenerationsvorrichtung ( 13 ) während des Betriebes des Dieselmotors betreibbar ist. 3. A diesel engine according to claim 1 or 2, characterized in that the particle filter (2) a regeneration device (13) is associated, wherein the regeneration device (13) is operable during operation of the diesel engine.
DE19904007516 1990-03-09 1990-03-09 diesel engine Expired - Fee Related DE4007516C2 (en)

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DE4007516A1 true true DE4007516A1 (en) 1991-09-12
DE4007516C2 DE4007516C2 (en) 1997-03-06

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Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328085A1 (en) * 1992-08-28 1994-03-03 Fuji Heavy Ind Ltd Recycling system for waste gases
DE4240239A1 (en) * 1992-12-01 1994-06-09 Wolfgang Schmitz Turbo-charged combustion engine with bypass valve serving intake air-cooler - allows cooling of recirculated combustion prods. or of fresh air for combustion purposes according to engine load.
DE4320045A1 (en) * 1993-06-17 1994-07-28 Daimler Benz Ag Supercharged internal combustion engine
DE4422966C1 (en) * 1994-06-30 1995-05-18 Mtu Friedrichshafen Gmbh Device for back-feed of cooled exhaust gas in IC engine
DE4340742A1 (en) * 1993-11-30 1995-06-01 Emitec Emissionstechnologie A process for reducing harmful emissions from a diesel engine with a downstream oxidation catalyst
DE4446730A1 (en) * 1994-12-24 1996-06-27 Man Nutzfahrzeuge Ag Exhaust gas recirculation system for an internal combustion engine with supercharging
DE19524603C1 (en) * 1995-07-06 1996-08-22 Daimler Benz Ag IC engine with exhaust gas recirculation
DE19618868A1 (en) * 1996-05-10 1997-11-13 Daimler Benz Ag Turbocharged diesel engine with exhaust gas feedback system
DE19728353C1 (en) * 1997-07-03 1998-09-24 Daimler Benz Ag IC engine with turbo charger
EP0879946A2 (en) * 1997-05-21 1998-11-25 Toyota Jidosha Kabushiki Kaisha An internal combustion engine
WO1998055759A1 (en) * 1997-06-06 1998-12-10 Turbodyne Systems, Inc. Method and apparatus for exhaust gas recirculation control and power augmentation in an internal combustion engine
DE19755817A1 (en) * 1997-12-16 1999-06-24 Daimler Chrysler Ag Device for feedback of exhaust gas from internal combustion engine
WO2000028203A1 (en) * 1998-11-09 2000-05-18 Stt Emtec Aktiebolag A method and device for an egr-system and a valve as well as a regulation method and device
US6138649A (en) * 1997-09-22 2000-10-31 Southwest Research Institute Fast acting exhaust gas recirculation system
US6216458B1 (en) * 1997-03-31 2001-04-17 Caterpillar Inc. Exhaust gas recirculation system
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US6820599B2 (en) 2003-02-03 2004-11-23 Ford Global Technologies, Llc System and method for reducing Nox emissions during transient conditions in a diesel fueled vehicle with EGR
US6863058B2 (en) 2003-02-03 2005-03-08 Ford Global Technologies, Llc System and method for reducing NOx emissions during transient conditions in a diesel fueled vehicle
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FR2883039A1 (en) * 2005-03-14 2006-09-15 Renault Sas Internal combustion engine e.g. diesel engine, has valve with shutters displaced by single actuator, where one shutter is displaced to regulate flow of recirculation gas circulating in duct
KR100749706B1 (en) * 1998-11-09 2007-08-16 에스티티 엠텍 에이비 A method and device for an egr-system and a valve as well as a regulation method and device
EP1840348A1 (en) * 2006-03-31 2007-10-03 Mazda Motor Corporation EGR System for Engine
DE10112521B4 (en) * 2000-03-16 2007-10-25 Ford Global Technologies, LLC (n.d.Ges.d. Staates Delaware), Dearborn diesel engine
DE102008004133A1 (en) 2008-01-11 2009-07-16 Volkswagen Ag Heating device for motor vehicle, has heating circuit provided with heat exchanger arranged in exhaust gas discharge pipe between exhaust gas outlet of internal-combustion engine and surrounding outlet
US8250865B2 (en) 2008-11-05 2012-08-28 Ford Global Technologies, Llc Using compressed intake air to clean engine exhaust gas recirculation cooler
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DE4222087C2 (en) * 1992-07-04 2002-07-18 Motoren Werke Mannheim Ag Reduced pollutant diesel engine
DE4328085A1 (en) * 1992-08-28 1994-03-03 Fuji Heavy Ind Ltd Recycling system for waste gases
DE4328085C2 (en) * 1992-08-28 1998-08-20 Fuji Heavy Ind Ltd Recycling system for waste gases
DE4240239A1 (en) * 1992-12-01 1994-06-09 Wolfgang Schmitz Turbo-charged combustion engine with bypass valve serving intake air-cooler - allows cooling of recirculated combustion prods. or of fresh air for combustion purposes according to engine load.
DE4320045A1 (en) * 1993-06-17 1994-07-28 Daimler Benz Ag Supercharged internal combustion engine
DE4340742A1 (en) * 1993-11-30 1995-06-01 Emitec Emissionstechnologie A process for reducing harmful emissions from a diesel engine with a downstream oxidation catalyst
US5839273A (en) * 1993-11-30 1998-11-24 Emitec Gesellschaft Fuer Emissionstechnologie Mbh Method for reducing pollutant emissions of a diesel engine with a downstream oxidation-type catalytic converter
EP0693621A1 (en) 1994-06-30 1996-01-24 MTU Motoren- und Turbinen-Union Friedrichshafen GmbH Cooled exhaust gas recirculation device
DE4422966C1 (en) * 1994-06-30 1995-05-18 Mtu Friedrichshafen Gmbh Device for back-feed of cooled exhaust gas in IC engine
DE4446730C2 (en) * 1994-12-24 1998-03-19 Man Nutzfahrzeuge Ag Exhaust gas recirculation system for an internal combustion engine with supercharging
DE4446730A1 (en) * 1994-12-24 1996-06-27 Man Nutzfahrzeuge Ag Exhaust gas recirculation system for an internal combustion engine with supercharging
US5669365A (en) * 1995-07-06 1997-09-23 Mercedes-Benz Ag Internal combustion engine with exhaust gas recirculation
DE19524603C1 (en) * 1995-07-06 1996-08-22 Daimler Benz Ag IC engine with exhaust gas recirculation
DE19618868A1 (en) * 1996-05-10 1997-11-13 Daimler Benz Ag Turbocharged diesel engine with exhaust gas feedback system
DE19618868C2 (en) * 1996-05-10 1998-07-02 Daimler Benz Ag Internal combustion engine with an exhaust gas recirculation system
US5740786A (en) * 1996-05-10 1998-04-21 Mercedes-Benz Ag Internal combustion engine with an exhaust gas recirculation system
US6216458B1 (en) * 1997-03-31 2001-04-17 Caterpillar Inc. Exhaust gas recirculation system
EP0879946A2 (en) * 1997-05-21 1998-11-25 Toyota Jidosha Kabushiki Kaisha An internal combustion engine
EP0879946A3 (en) * 1997-05-21 1999-05-26 Toyota Jidosha Kabushiki Kaisha An internal combustion engine
WO1998055759A1 (en) * 1997-06-06 1998-12-10 Turbodyne Systems, Inc. Method and apparatus for exhaust gas recirculation control and power augmentation in an internal combustion engine
US5927075A (en) * 1997-06-06 1999-07-27 Turbodyne Systems, Inc. Method and apparatus for exhaust gas recirculation control and power augmentation in an internal combustion engine
DE19728353C1 (en) * 1997-07-03 1998-09-24 Daimler Benz Ag IC engine with turbo charger
US5937651A (en) * 1997-07-03 1999-08-17 Daimler-Benz A.G. Internal combustion engine with exhaust gas turbocharger
EP0889226A2 (en) 1997-07-03 1999-01-07 Daimler-Benz Aktiengesellschaft Combustion engine with turbocharger and exhaust gas recirculation
US6138649A (en) * 1997-09-22 2000-10-31 Southwest Research Institute Fast acting exhaust gas recirculation system
DE19755817C2 (en) * 1997-12-16 2001-02-15 Daimler Chrysler Ag A method for recirculation of exhaust gas
DE19755817A1 (en) * 1997-12-16 1999-06-24 Daimler Chrysler Ag Device for feedback of exhaust gas from internal combustion engine
KR100749706B1 (en) * 1998-11-09 2007-08-16 에스티티 엠텍 에이비 A method and device for an egr-system and a valve as well as a regulation method and device
US7017560B2 (en) 1998-11-09 2006-03-28 Stt Emtec Ab Method and device for an EGR-system and a valve as well as a regulation method and device
US6925992B1 (en) 1998-11-09 2005-08-09 Stt Emtec Ab Method and device for an EGR-system and a valve as well as a regulation method and device
EP1426605A2 (en) 1998-11-09 2004-06-09 STT Emtec Aktiebolag A regulation method and device for exhaust gas recirculation
WO2000028203A1 (en) * 1998-11-09 2000-05-18 Stt Emtec Aktiebolag A method and device for an egr-system and a valve as well as a regulation method and device
DE19957715C2 (en) * 1998-12-01 2002-01-17 Toyota Motor Co Ltd Exhaust emission control device for an internal combustion engine
US7189374B1 (en) 1999-06-15 2007-03-13 Johnson Matthey Public Limited Company Emissions control
WO2000077353A3 (en) * 1999-06-15 2001-05-31 Johnson Matthey Plc Improvements in emissions control
DE19955324A1 (en) * 1999-11-17 2001-05-23 Volkswagen Ag Apparatus and method for reducing harmful components in the exhaust gas of an internal combustion engine, especially a diesel internal combustion engine
DE10112521B4 (en) * 2000-03-16 2007-10-25 Ford Global Technologies, LLC (n.d.Ges.d. Staates Delaware), Dearborn diesel engine
USRE42609E1 (en) 2003-02-03 2011-08-16 Ford Global Technologies, Llc System and method for reducing NOx emissions during transient conditions in a diesel fueled vehicle with EGR
US7273045B2 (en) 2003-02-03 2007-09-25 Ford Global Technologies, Llc System and method for reducing NOx emissions during transient conditions in a diesel fueled vehicle with EGR
US6863058B2 (en) 2003-02-03 2005-03-08 Ford Global Technologies, Llc System and method for reducing NOx emissions during transient conditions in a diesel fueled vehicle
US6820599B2 (en) 2003-02-03 2004-11-23 Ford Global Technologies, Llc System and method for reducing Nox emissions during transient conditions in a diesel fueled vehicle with EGR
DE102004036562A1 (en) * 2004-07-28 2006-03-23 Bayerische Motoren Werke Ag Clean low-pressure exhaust gas recirculation
FR2883039A1 (en) * 2005-03-14 2006-09-15 Renault Sas Internal combustion engine e.g. diesel engine, has valve with shutters displaced by single actuator, where one shutter is displaced to regulate flow of recirculation gas circulating in duct
EP1707781A1 (en) * 2005-03-14 2006-10-04 Renault Internal combustion engine with a valve system for regulating an exhaust gas recirculation rate and an automotive vehicle comprising such an engine.
EP1840348A1 (en) * 2006-03-31 2007-10-03 Mazda Motor Corporation EGR System for Engine
DE102008004133A1 (en) 2008-01-11 2009-07-16 Volkswagen Ag Heating device for motor vehicle, has heating circuit provided with heat exchanger arranged in exhaust gas discharge pipe between exhaust gas outlet of internal-combustion engine and surrounding outlet
US8250865B2 (en) 2008-11-05 2012-08-28 Ford Global Technologies, Llc Using compressed intake air to clean engine exhaust gas recirculation cooler
DE102013020642A1 (en) 2013-12-16 2015-06-18 Deutz Aktiengesellschaft Exhaust gas recirculation cooler cleaning procedures

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