EP0072059A1 - Supercharged internal-combustion engine with a filter for exhaust gas particles - Google Patents

Supercharged internal-combustion engine with a filter for exhaust gas particles Download PDF

Info

Publication number
EP0072059A1
EP0072059A1 EP82200907A EP82200907A EP0072059A1 EP 0072059 A1 EP0072059 A1 EP 0072059A1 EP 82200907 A EP82200907 A EP 82200907A EP 82200907 A EP82200907 A EP 82200907A EP 0072059 A1 EP0072059 A1 EP 0072059A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
filter
pressure wave
exhaust
wave machine
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
EP82200907A
Other languages
German (de)
French (fr)
Other versions
EP0072059B1 (en
Inventor
Andreas Mayer
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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
Application filed by BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to AT82200907T priority Critical patent/ATE19676T1/en
Publication of EP0072059A1 publication Critical patent/EP0072059A1/en
Application granted granted Critical
Publication of EP0072059B1 publication Critical patent/EP0072059B1/en
Expired legal-status Critical Current

Links

Images

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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust 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
    • F01N3/023—Exhaust 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
    • F01N3/0236—Exhaust 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 using turbine waste gate valve
    • 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
    • F01N13/00—Exhaust 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust 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
    • F01N3/022—Exhaust 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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust 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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust 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
    • F01N3/023—Exhaust 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/32—Engines with pumps other than of reciprocating-piston type
    • F02B33/42—Engines with pumps other than of reciprocating-piston type with driven apparatus for immediate conversion of combustion gas pressure into pressure of fresh charge, e.g. with cell-type pressure exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/14—Exhaust treating devices having provisions not otherwise provided for for modifying or adapting flow area or back-pressure
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/04—Fitting ceramic monoliths in a metallic housing with means compensating thermal expansion
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/06—Fitting ceramic monoliths in a metallic housing with means preventing gas flow by-pass or leakage
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like

Definitions

  • the invention relates to a device and a method for limiting the exhaust gas particle emission when charging internal combustion engines, consisting essentially of a pressure wave machine with charge air flap and / or recirculation flap, and / or exhaust gas bypass valve, and exhaust manifolds opening into an exhaust gas receiver.
  • a reduction of the particle emission in internal combustion engines by measures within the internal combustion engine is not yet possible as of today, however progress has already been made in influencing the particle emission by exhaust gas aftertreatments.
  • the main focus is on processes for the post-combustion of free-floating soot and unburned high-boiling hydrocarbons as well as soot separation by exhaust gas filtering.
  • the exhaust gas temperature after the pressure wave machine is lower than, for example, when charging with a turbocharger because of the purge air.
  • the external energy supply for burning the soot is greater when it is charged with a pressure wave machine.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, achieves the object of providing a device whereby the particle emission from internal combustion engines charged with pressure wave machines is optimally limited by the exhaust gas particle filter being arranged in the high pressure part of the exhaust system in front of the pressure wave machine.
  • the filter is arranged in the exhaust gas receiver itself.
  • the advantage of this arrangement can be seen in the fact that the hot exhaust gases flowing out of the internal combustion engine can be used for soot combustion without losses.
  • the filter is arranged in a separate section from the actual exhaust gas receiver in the exhaust gas direction immediately before the pressure wave machine.
  • the filter is designed as an interchangeable unit.
  • the filter consists of a monolithic porous and heat-resistant core.
  • the particles present in the exhaust gas hit the surface of the exhaust gas particle filter and agglomerate there in larger particles, whereby the surface quality and the porosity of the exhaust gas particle filter material play a decisive role for the accumulation and agglomeration processes of the soot particles as well as for their combustion.
  • the core of the filter is surrounded by a fibrous mat-like and heat-resistant covering.
  • the core of the filter assembly of the casing is arranged in a cylindrical support tube which is held at one end by the retaining ring provided in the exhaust gas receiver and at the other end by the retaining cam provided in the exhaust gas receiver.
  • the cylindrical support tube is fixed between the flange of the exhaust gas receiver and the flange of the section.
  • the core of the filter is rigidly integrated with the interposition of the fibrous mat-like covering through the cylindrical support tube and its position is precisely fixed in the axial and radial directions.
  • the support tube consists of heat-resistant sheet metal and an elastic, heat-resistant layer is arranged between it and the solid jacket of the section of the exhaust gas receiver.
  • the monolithic porous core of the filter consists of a ceramic material with high thermal shock resistance or steel wool. With these two materials, optimal filter properties are achieved at higher temperatures, taking into account the temperature change.
  • the charge air flap in the charge air line is briefly closed and operated again after the filter has been successfully regenerated.
  • the recirculation flap in the fresh air intake line of the pressure wave machine is closed at short notice and is operated again normally after the filter has been successfully regenerated.
  • the exhaust gas temperature upstream of the filter is increased by briefly opening the exhaust gas bypass valve and operated again after the filter has been successfully regenerated.
  • the exhaust gas bypass valve is arranged in the bypass between the exhaust gas housing and the exhaust line of the pressure wave machine.
  • the method steps according to claims 15-17 are used alternatively. Thus, a number of process options are available to control the exhaust temperature increase in front of the filter and burn soot deposits on the surface of the filter.
  • FIG. 1 shows a cylinder head 1 with six cylinders 2.
  • an inlet / suction channel 3 is arranged for each cylinder, which open into a manifold 4.
  • the manifold 4 is connected to the pressure wave machine 7 through the charge air line 5, in which the charge air flap 6 is located.
  • the exhaust gas channel 8 for each cylinder, to which the exhaust manifolds 9 are connected and which open into an exhaust gas receiver 10.
  • the exhaust gas receiver 10 is connected to the Intermediate piece 11 connected to the exhaust housing 13 of the pressure wave machine 7.
  • the charge air line 5 opens into the pressure wave machine 7, and the fresh air intake line 14 with recirculation flap 37 and the exhaust line 15 are also connected.
  • the exhaust gas bypass valve 36 is located in a bypass 35 between the exhaust gas housing 13 and the exhaust line 15.
  • the mode of operation of the charge air flap 6, the recirculation flap 37 and the exhaust gas bypass valve 36 is subsequently described in more detail in connection with the description of FIG. 4 in connection with the mode of operation of the filter 18 during driving operation explained.
  • the pressure wave machine 7 is driven via a pulley 16 by the motor shaft 17, the connection of V-belts 16 'between the pulley 16 and the motor shaft 17 or the motor pulley 17' being shown only schematically in the drawing for reasons of better clarity.
  • the exhaust gas particle filter 18 is arranged in the exhaust gas receiver 10 itself.
  • the particle filter 18 is only indicated in FIG. 1, but is shown and explained in detail in FIG. 3.
  • the end plate 27 by means of a screw bolt 29, washer 30 and nut 31 with the flange 22 of the exhaust gas receiver 10 and on the other hand the flange 21 of the exhaust gas receiver 10 is also screwed to the flange 19 of the intermediate piece 11 releasably connected.
  • the intermediate piece 11 in turn connects the exhaust gas receiver 10 to the exhaust gas housing 13 of the pressure wave machine 7 and is removably arranged by the flange connection 19, 21 and the flange connection 20, 23.
  • FIG. 2 shows a schematic illustration of a second variant of the exhaust gas particle filter arrangement.
  • the filter 18 is arranged in a section 12 separated from the actual exhaust gas receiver 10 in the exhaust gas direction directly in front of the pressure wave machine 7.
  • the exhaust gas receiver 10 has a smaller diameter than the first variant (FIG. 1) and extends to the section 12.
  • the intermediate piece 11 is omitted in this arrangement.
  • the section 12 is also arranged to be removable.
  • the flange 12 'of the section 12 is detachably connected to one another by a screw connection with the flange 21 of the exhaust gas receiver 10, and on the other hand the flange 1.2 "is also connected to the flange 23 of the exhaust gas housing 13 of the pressure wave machine 7 with a screw connection.
  • Fig. 3 - here the same reference numbers apply as in Fig. 1 - a section through the exhaust gas particle filter arrangement according to the first variant in Fig. 1 is shown. For the sake of clarity, however, only the exhaust gas receiver ends and part of the exhaust gas receiver 10 and part of the filter 18 are shown.
  • the filter 18 consists of a monolithic, porous, heat-resistant and cylindrical core made of ceramic material cf. e.g. SAE-Paper No. 810114 of February 23, 1981 "Cellular Ceramic Diesel Particulate Filters” by John S. Howitt et al, and is provided with a fibrous and heat-resistant mat-like covering 24 made of ceramic or mineral fiber material, the ends 24 ' of the mat-like covering 24 protrude beyond the cylindrical filter 18 in the axial direction and are inclined inwards towards the axis, as a result of which the position of the filter 18 is fixed in the longitudinal direction.
  • the filter 18 together with the cover 24 is fastened in a support tube 25, which consists of heat-resistant sheet metal, which encloses the filter 18 together with the cover 24 under contact pressure, the ends of the support tube 25 being welded along a surface line.
  • the annular exhaust gas inflow space 39 is located between the support tube 25 and the solid casing of the exhaust gas receiver 10. According to the direction of the arrows with the reference number 40, the exhaust gas flows out of the exhaust gas channels 8 into the agas inflow space 39 and from there into the filter antechamber 41.
  • the exhaust gas inflow space 39 and the filter anteroom 41 are connected to one another. After the exhaust gas has passed through the filter 18, it reaches the intermediate piece 11 and is fed from there to the exhaust gas housing 13 of the pressure wave machine 7.
  • a retaining ring 26 is arranged at the downstream end of the exhaust gas receiver 10 and at least four retaining cams 28 are each arranged concentrically at the other end of the exhaust gas receiver 10.
  • An asbestos seal 33 is located between the holding ring 26 and the support tube 25 in order to prevent exhaust gas from reaching the intermediate piece 11 g bypassing the filter 18, while the asbestos seals 33 ′ take over the sealing against the environment.
  • Fig. 4 - here the essentially the same reference numerals as in Fig. 3 apply - a section through the exhaust gas particle filter arrangement according to the variant in Fig. 2 is shown.
  • the construction of the filter 18 is the same as described in detail in FIG. 3.
  • a flange 25 ' is provided, which is clamped between the flange 21 of the exhaust gas receiver 10 and the flange 12' of the section 12 and is fastened by a screw connection 29, 30, 31.
  • An elastic heat-resistant layer 34 made of wire mesh is located between the support tube 25 and the solid jacket of the section 12.
  • the one-sided fastening of the support tube 25 and the lining with the elastic, heat-resistant layer 34 was chosen in order to dampen any vibrations of the machine and to allow vibrations already transmitted to the support tube 25 to subside more quickly.
  • the different thermal expansions of the different materials caused by thermal influence must be taken into account sufficiently. If the support tube 25 is fixed on both sides, thermal stresses would lead to the destruction of the attachment of the support tube 25.
  • the flange 12 ′′ of the section 12 is connected to the flange 23 of the exhaust gas housing 13 of the pressure wave machine 7 by means of a screw connection 29, 30, 31 with the interposition of a seal 33 ′.
  • a temperature surge can also be caused by a brief actuation of the charge air flap 6, the exhaust gas bypass valve 36 or the recirculation flap 37.
  • the charge air flap 6 or the recirculation flap 37 is briefly closed, or when the exhaust gas bypass valve 36 is briefly opened, the charge air density and thus the excess air are briefly reduced, which increases the gas temperature while the fuel injection quantity remains the same.
  • the pressure wave machine 7 tolerates the high temperature peaks because the rotor is flushed with fresh air.
  • the shock wave machine 7's own exhaust gas recirculation capacity can be increased by temperature surges without risk of contamination of the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)

Abstract

In order to limnit the exhaust particulate emission when supercharging a pressure wave machine-supercharged internal combustion engine, an exhaust particulates filter is arranged in the high-pressure part of the exhaust gas system ahead of the pressure wave machine. By increasing the supply of fuel to the engine itself and/or briefly closing a charge air flap valve a recirculation flap valve and/or brief opening of a exhaust gas by-pass valve, the exhaust gas attains the combustion temperature of soot components deposited on the surface of the filter. These soot components are burned off, and the filter is automatically regenerated.

Description

Die Erfindung bezieht sich auf eine Vorrichtung und ein Verfahren zur Begrenzung der Abgaspartikelemission bei der Aufladung von Brennkraftmaschinen, im wesentlichen bestehend aus einer Druckwellenmaschine mit Ladeluftklappe und/oder Rezirkulationsklappe, und/oder Abgas-Bypassventil, und in einen Abgasreceiver mündende Abgaskrümmer.The invention relates to a device and a method for limiting the exhaust gas particle emission when charging internal combustion engines, consisting essentially of a pressure wave machine with charge air flap and / or recirculation flap, and / or exhaust gas bypass valve, and exhaust manifolds opening into an exhaust gas receiver.

Die Partikelemission von Brennkraftmaschinen ist bereits in einigen Ländern gesetzlich limitiert, andere Länder werden sich einer verschärften restriktiven Handhabung der gesetzlichen Verordnung über die Emission zulässiger Grenzwerte von Abgaspartikeln anschliessen.Particulate emissions from internal combustion engines are already legally limited in some countries, while other countries will adopt the more restrictive handling of the statutory regulation on the emission of permitted limit values for exhaust gas particles.

Bei der Partikelemission von Brennkraftmaschinen handelt es sich im wesentlichen um folgende Bestandteile:

  • - Freischwebender Russ
  • - Im Russ angelagerte Kohlenwasserstoffverbindungen und andere organische Substanzen
  • - Sulfatverbindungen
  • - Bleiverbindungen (bei Ottomotoren)
Particle emissions from internal combustion engines essentially consist of the following components:
  • - Free-floating soot
  • - Hydrocarbon compounds and other organic substances deposited in the soot
  • - sulfate compounds
  • - lead compounds (for gasoline engines)

Eine Absenkung der Partikelemission bei Brennkraftmaschinen durch Massnahmen innerhalb der Brennkraftmaschine ist nach dem heutigen Stand noch nicht möglich, jedoch wurden bereits Fortschritte in der Beeinflussung der Partikelemission durch Abgasnachbehandlungen erzielt. Dabei stehen vor allem Verfahren zur Nachverbrennung von freischwebendem Russ und unverbrannten hochsiedenden Kohlewasserstoffen sowie die Russabscheidung durch Abgasfilterung im Vordergrund.A reduction of the particle emission in internal combustion engines by measures within the internal combustion engine is not yet possible as of today, however progress has already been made in influencing the particle emission by exhaust gas aftertreatments. The main focus is on processes for the post-combustion of free-floating soot and unburned high-boiling hydrocarbons as well as soot separation by exhaust gas filtering.

Die Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mBH in Aachen hat anlässlich eines Symposiums in Esslingen (BRD) am 28./29.4.1980 eine Studie mit dem Titel "Möglichkeiten zur Beeinflussung der Partikelemission von Dieselmotoren durch Abgasnachbehandlung" von Dr. Herman Weltens veröffentlicht, die den derzeitigen Stand der Technik wiedergibt.On the occasion of a symposium in Esslingen (FRG) on April 28/29, 1980, the research company for energy technology and internal combustion engines mBH in Aachen carried out a study entitled "Possibilities for influencing the particle emission of diesel engines by exhaust gas aftertreatment" by Dr. Herman Weltens published, which reflects the current state of the art.

Dabei wird besonders auf den Seiten 15 und 16 dieser Veröffentlichung darauf hingewiesen, dass nicht sichergestellt ist, dass die erforderlichen Bedingungen zur Selbstzündung und Abbrand des im Abgasfilter angesammelten Russes im normalen Fahrbetrieb hinreichend oft erreicht werden, und dass vorgeschlagen wird, die Russablagerungen intermittierend mit Hilfe einer Fremdenergiezufuhr zu oxidieren. Dabei kann die Fremdenergie mittels offener Flamme oder durch elektrische Beheizung zugeführt werden.It is particularly pointed out on pages 15 and 16 of this publication that there is no guarantee that the conditions required for auto-ignition and combustion of the soot accumulated in the exhaust filter will be achieved sufficiently often during normal driving, and that it is proposed that the soot deposits be intermittently used to oxidize an external energy supply. The external energy can be supplied by an open flame or by electrical heating.

Eine Verbrennung von Russablagerungen an den Oberflächen der Abgaspartikelfilter ohne Zuhilfenahme von Fremdenergie ist mit den derzeit bekannten Verfahren nicht möglich. Dies gilt insbesondere für Brennkraftmaschinen, die von Druckwellenmaschinen aufgeladen sind. Allenfalls wäre dort der Einsatz von Abgaspartikelfiltern in der Auspuffleitung hinter der Druckwellenmaschine denkbar. Um jedoch die Niederdruckspülung in der Druckwellenmaschine in jedem Betriebspunkt aufrechtzuerhalten, sind geringe Niederdruckwiderstände erforderlich. Im Neuzustand ist der Druckverlust eines Abgaspartikelfilters zwar gering und beträgt ungefähr 200 mm WS. Die Erhöhung des Auspuffgegendruckes bei verstopftem Filter führt unter Umständen zu einem Zusammenbruch der Niederdruckspülung in der Druckwellenmaschine und folglich zum Ersticken des Motors.A combustion of soot deposits on the surfaces of the exhaust particle filters without the aid of external energy is not possible with the currently known methods. This applies in particular to internal combustion engines which are charged by pressure wave machines. At most, the use of exhaust gas particle filters in the exhaust line behind the pressure wave machine would be conceivable. However, in order to maintain the low pressure flushing in the pressure wave machine at every operating point, low low pressure resistances are required. In the new state, the pressure loss of an exhaust gas particle filter is small and amounts to approximately 200 mm WS. Increasing the exhaust back pressure with a clogged filter may lead to a breakdown of the low pressure purge in the pressure wave machine and consequently to suffocation of the engine.

Auch ist die Abgastemperatur nach der Druckwellenmaschine wegen des Spülluftanteiles tiefer als beispielsweise bei der Aufladung mit Turbolader. Die Fremdenergiezufuhr zum Abbrennen des Russes ist bei der Aufladung mit Druckwellenmaschine grösser.Also, the exhaust gas temperature after the pressure wave machine is lower than, for example, when charging with a turbocharger because of the purge air. The external energy supply for burning the soot is greater when it is charged with a pressure wave machine.

Hier will die Erfindung Abhilfe schaffen. Die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, löst die Aufgabe, eine Vorrichtung zu schaffen, wodurch die Partikelemission von mit Druckwellenmaschinen aufgeladenen Brennkraftmaschinen optimal begrenzt wird, indem das Abgaspartikelfilter im Hochdruckteil des Abgassystems vor der Druckwellenmaschine angeordnet ist.The invention seeks to remedy this. The invention, as characterized in the claims, achieves the object of providing a device whereby the particle emission from internal combustion engines charged with pressure wave machines is optimally limited by the exhaust gas particle filter being arranged in the high pressure part of the exhaust system in front of the pressure wave machine.

Diese Anordnung des Abgaspartikelfilters weist folgende Vorteile auf:

  • - Einsparung von Fremdenergie
  • - Vorrichtungen für die Zufuhr von Fremdenergie und Russ-Abbrenneinrichtungen für das Verbrennen der Russablagerungen an den Oberflächen der Abgaspartikelfilter mittels Fremdenergie entfallen.
  • - Regeleinrichtungen, die die Auslösung des Zündvorganges der Fremdenergie in Abhängigkeit des Abgasgegendruckes steuern, entfallen ebenfalls.
  • - Das der Druckwellenmaschine eigene A-bgasrezirkulationsvermögen wird gesteigert, ohne Verschmutzungsgefahr für den Rotor der Druckwellenmaschine.
  • - Nach dem Entzünden der Russablagerungen steigt die Ladeluftdichte sofort wieder an, die Abgastemperatur sinkt, und der Motor wird nicht überhitzt.
  • - Trotz herabgesetzter Abgastemperatur, wird wegen der exothermen Reaktion der Russverbrennung dieselbe unvermindert fortgesetzt.
This arrangement of the exhaust gas particle filter has the following advantages:
  • - Saving external energy
  • - Devices for the supply of external energy and soot burn-off devices for the combustion of the soot deposits on the surfaces of the exhaust gas particle filters by means of external energy are eliminated.
  • - Control devices that control the triggering of the ignition process of external energy depending on the exhaust gas back pressure are also omitted.
  • - The exhaust gas recirculation capacity of the pressure wave machine is increased without risk of contamination for the rotor of the pressure wave machine.
  • - After the soot deposits have ignited, the charge air density increases immediately, the exhaust gas temperature drops and the engine is not overheated.
  • - Despite the reduced exhaust gas temperature, the soot combustion continues unabated due to the exothermic reaction of the soot combustion.

Nach Anspruch 2 ist das Filter im Abgasreceiver selbst angeordnet. Der Vorteil dieser Anordnung ist darin zu sehen, dass die aus der Brennkraftmaschinen strömenden heissen Abgase ohne Verluste für die Russverbrennung nutzbar gemacht werden können.According to claim 2, the filter is arranged in the exhaust gas receiver itself. The advantage of this arrangement can be seen in the fact that the hot exhaust gases flowing out of the internal combustion engine can be used for soot combustion without losses.

Nach Anspruch 3 ist das Filter in einem vom eigentlichen Abgasreceiver getrennten Teilstück in Abgasrichtung unmittelbar vor der Druckwellenmaschine angeordnet.According to claim 3, the filter is arranged in a separate section from the actual exhaust gas receiver in the exhaust gas direction immediately before the pressure wave machine.

Entsprechend Anspruch 4 ist das Filter als austauschbare Baueinheit ausgebildet.According to claim 4, the filter is designed as an interchangeable unit.

Durch die Anordnungen gemäss den Ansprüchen 3 und 4 kann das Filter einfach und schnell ausgewechselt werden.Due to the arrangements according to claims 3 and 4, the filter can be replaced quickly and easily.

Gemäss Anspruch 5 besteht das Filter aus einem monolithischen porösen und hitzebeständigen Kern.According to claim 5, the filter consists of a monolithic porous and heat-resistant core.

Die im Abgas vorhandenen Partikel treffen auf die Oberfläche des Abgaspartikelfilters auf und agglomerieren dort in grösseren Partikeln, wobei die Oberflächenbeschaffenheit und die Porosität des Abgaspartikelfilterwerkstoffes für die Anlagerungs- und Agglomerationsvorgänge der Russpartikel sowie für deren Verbrennung eine ausschlaggebende Rolle spielen.The particles present in the exhaust gas hit the surface of the exhaust gas particle filter and agglomerate there in larger particles, whereby the surface quality and the porosity of the exhaust gas particle filter material play a decisive role for the accumulation and agglomeration processes of the soot particles as well as for their combustion.

Entsprechend Anspruch 6 ist der Kern des Filters von einer faserigen mattenartigen und hitzebeständigen Umhüllung umgeben.According to claim 6, the core of the filter is surrounded by a fibrous mat-like and heat-resistant covering.

Nach Anspruch 7 ist der Kern des Filterssamt der Umhüllung in einem zylindrischen Tragrohr angeordnete das an einem Ende von dem im Abgasreceiver vorgesehenen Haltering und am anderen Ende von dem im Abgasreceiver vorgesehenen Haltenocken gehalten wird.According to claim 7, the core of the filter assembly of the casing is arranged in a cylindrical support tube which is held at one end by the retaining ring provided in the exhaust gas receiver and at the other end by the retaining cam provided in the exhaust gas receiver.

Gemäss Anspruch 8 ist das zylindrische Tragrohr zwischen dem Flansch des Abgasreceivers und dem Flansch des Teilstückes befestigt.According to claim 8, the cylindrical support tube is fixed between the flange of the exhaust gas receiver and the flange of the section.

Durch die Anordnung gemäss den Ansprüchen 6 - 8 ist der Kern des Filters unter Zwischenschaltung der faserigen mattenartigen Umhüllung durch das zylindrische Tragrohr starr eingebunden und seine Lage in axialer und radialer Richtung genau fixiert.Due to the arrangement according to claims 6-8, the core of the filter is rigidly integrated with the interposition of the fibrous mat-like covering through the cylindrical support tube and its position is precisely fixed in the axial and radial directions.

Gemäss den Ansprüchen 9 bis 11 besteht das Tragrohr aus hitzebeständigem Blech und zwischen diesem und dem massiven Mantel des Teilstückes des Abgasreceivers ist eine elastische hitzebeständige Schicht angeordnet.According to claims 9 to 11, the support tube consists of heat-resistant sheet metal and an elastic, heat-resistant layer is arranged between it and the solid jacket of the section of the exhaust gas receiver.

Hierdurchist gewährleistet, dass das Tragrohr sich bei höherer Temperatur nicht verzieht und einen grossen Verzunderungswiderstand aufweist, und dass durch die elastische hitzebeständige Schicht eventuell auftretende Vibrationen von der Maschine abgedämpft und somit nicht unmittelbar auf den Kern des Filters übertragen werden.This ensures that the support tube does not warp at a higher temperature and has a high resistance to scaling, and that any that occur due to the elastic, heat-resistant layer Vibrations are dampened by the machine and are therefore not transmitted directly to the core of the filter.

Nach Anspruch 12 und 13 besteht der monolithische poröse Kern des Filters aus einem keramischen Material mit hoher Temperaturewechselbeständigkeit oder aus Stahlwolle. Mit diesen beiden Materialien werden optimale Filtereigenschaften bei höheren Temperaturen, unter Berücksichtigung des Temperaturwechsels, erreicht.According to claims 12 and 13, the monolithic porous core of the filter consists of a ceramic material with high thermal shock resistance or steel wool. With these two materials, optimal filter properties are achieved at higher temperatures, taking into account the temperature change.

Nach dem Verfahrensanspruch 14 zum Betrieb der Vorrichtung wird zur Erhöhung der Abgastemperatur vor dem Partikelfilter der Brennkraftmaschine mehr Brennstoff zugeführt.According to the method claim 14 for operating the device, more fuel is fed to the internal combustion engine to increase the exhaust gas temperature.

Gemäss Anspruch 15 wird zwecks Erhöhung der Abgastemperatur vor dem Filter die Ladeluftklappe in der Ladeluftleitung kurzfristig geschlossen und nach erfolger Regeneration des Filters wieder normal betätigt.According to claim 15, in order to increase the exhaust gas temperature upstream of the filter, the charge air flap in the charge air line is briefly closed and operated again after the filter has been successfully regenerated.

Entsprechend Anspruch 16 wird zur Erhöhung der Abgastemperatur vor dem Filter die Rezirkulationsklappe in der Frischluftansaugleitung der Druckwellenmaschine kruzfristig geschlossen und nach erfolger Regeneration des Filters wieder normal betätigt.In order to increase the exhaust gas temperature upstream of the filter, the recirculation flap in the fresh air intake line of the pressure wave machine is closed at short notice and is operated again normally after the filter has been successfully regenerated.

Nach Anspruch 17 wird die Abgastemperatur vor dem Filter durch kurzfristiges Oeffnen des Abgasbypassventils erhöht und nach erfolger Regeneration des Filters wieder normal betätigt.According to claim 17, the exhaust gas temperature upstream of the filter is increased by briefly opening the exhaust gas bypass valve and operated again after the filter has been successfully regenerated.

Das Abgasbypassventil ist im Bypass zwischen Abgasgehäuse und Auspuffleitung der Druckwellenmaschine angeordnet. Die Verfahrensschritte gemäss den Ansprüchen 15 - 17 werden alternativ zur Anwendung gebracht. Somit stehen eine Reihe von Verfahrensmöglichkeiten zur Verfügung, um die Abgastemperatur vor dem Filter zu erhöhen und Russablagerungen auf der Oberfläche des Filters zu verbrennen.The exhaust gas bypass valve is arranged in the bypass between the exhaust gas housing and the exhaust line of the pressure wave machine. The method steps according to claims 15-17 are used alternatively. Thus, a number of process options are available to control the exhaust temperature increase in front of the filter and burn soot deposits on the surface of the filter.

Die Erfindung wird nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert.The invention is explained below with reference to exemplary embodiments shown in the drawing.

In der Zeichnung zeigt:

  • Fig. 1 eine schematische Darstellung einer ersten Variante der Abgaspartikelfilteranordnung bei der Aufladung einer Brennkraftmaschine mittels Druckwellenmaschine
  • Fig. 2 eine schematische Darstellung einer zweiten Variante der Abgaspartikelfilteranordnung bei der Aufladung einer Brennkraftmaschine mittels Druckwellenmaschine
  • Fig. 3 einen Schnitt durch die Abgaspartikelfilteranordnüng gemäss der beispielsweisen Ausführungsform der ersten Variante in Fig. 1
  • Fig. 4 einen Schnitt durch eine Abgaspartikelfilteranordnung gemäss der beispielsweisen Ausführungsform der zweiten Variante in Fig. 2.
The drawing shows:
  • Fig. 1 is a schematic representation of a first variant of the exhaust gas particle filter arrangement when charging an internal combustion engine by means of a pressure wave machine
  • Fig. 2 is a schematic representation of a second variant of the exhaust gas particle filter arrangement when charging an internal combustion engine by means of a pressure wave machine
  • 3 shows a section through the exhaust gas particle filter arrangement according to the exemplary embodiment of the first variant in FIG. 1
  • 4 shows a section through an exhaust gas particle filter arrangement according to the exemplary embodiment of the second variant in FIG. 2.

In Fig. 1 ist ein Zylinderkopf 1 mit sechs Zylindern 2 gezeigt. Im Zylinderkopf 1 sind für jeden Zylinder je ein Einlass/Saugkanal 3 angeordnet, die in ein Sammelrohr 4 münden. Das Sammelrohr 4 ist durch die Ladeluftleitung 5, in der sich die Ladeluftklappe 6 befindet mit der Druckwellenmaschine 7 verbunden.1 shows a cylinder head 1 with six cylinders 2. In the cylinder head 1, an inlet / suction channel 3 is arranged for each cylinder, which open into a manifold 4. The manifold 4 is connected to the pressure wave machine 7 through the charge air line 5, in which the charge air flap 6 is located.

Im Zylinderkopf 1 sind auch für jeden Zylinder je ein Abgaskanal 8 angeordnet, an die sich die Abgas-Krümmer 9 anschliessen und die in einen Abgasreceiver 10 münden. In an sich bekannter Weise ist an den Abgasreceiver 10 durch das Zwischenstück 11 das Abgasgehäuse 13 der Druckwellenmaschine 7 verbunden. In die Druckwellenmaschine 7 mündet, wie bereits erwähnt, die Ladeluftleitung 5, und weiterhin sind die Frischluftansaugleitung 14 mit Rezirkulationsklappe 37 und die Auspuffleitung 15 angeschlossen. In einem Bypass 35 zwischen Abgasgehäuse 13 und Auspuffleitung 15 befindet sich das Abgasbypassventil 36. Die Wirkungsweise der Ladeluftklappe 6, der Rezirkulationsklappe 37 und des Abgasbypassventils 36 wird anschliessend an die Beschreibung von Fig. 4 im Zusammenhang mit der Wirkungsweise des Filters 18 während des Fahrbetriebes näher erläutert. Die Druckwellenmaschine 7 wird über eine Riemenscheibe 16 von der Motorwelle 17 angetrieben, wobei aus Gründen besserer Uebersicht in der Zeichnung die Verbindung von Keilriemen 16' zwischen Riemenscheibe 16 und Motorwelle 17 bzw. Motorriemenscheibe 17' nur schematisch dargestellt ist.In the cylinder head 1 there are also one exhaust gas channel 8 for each cylinder, to which the exhaust manifolds 9 are connected and which open into an exhaust gas receiver 10. In a manner known per se, the exhaust gas receiver 10 is connected to the Intermediate piece 11 connected to the exhaust housing 13 of the pressure wave machine 7. As already mentioned, the charge air line 5 opens into the pressure wave machine 7, and the fresh air intake line 14 with recirculation flap 37 and the exhaust line 15 are also connected. The exhaust gas bypass valve 36 is located in a bypass 35 between the exhaust gas housing 13 and the exhaust line 15. The mode of operation of the charge air flap 6, the recirculation flap 37 and the exhaust gas bypass valve 36 is subsequently described in more detail in connection with the description of FIG. 4 in connection with the mode of operation of the filter 18 during driving operation explained. The pressure wave machine 7 is driven via a pulley 16 by the motor shaft 17, the connection of V-belts 16 'between the pulley 16 and the motor shaft 17 or the motor pulley 17' being shown only schematically in the drawing for reasons of better clarity.

In dieser ersten Variante ist das Abgaspartikelfilter 18 im Abgasreceiver 10 selbst angeordnet. Das Partikelfilter 18 ist in Fig. 1 nur angedeutet, wird aber in Fig. 3 ausführlich dargestellt und erläutert.In this first variant, the exhaust gas particle filter 18 is arranged in the exhaust gas receiver 10 itself. The particle filter 18 is only indicated in FIG. 1, but is shown and explained in detail in FIG. 3.

Zwecks einfacherer Handhabung und besserer Zugänglichkeit beim Auswechseln des Filters 18 ist einerseits die Abschlussplatte 27 durch Schraubbolzen 29, Unterlegscheibe 30 und Mutter 31 mit dem Flansch 22 des Abgasreceivers 10 und andererseits der Flansch 21 des Abgasreceivers 10 ebenfalls mit Schraubverbindung mit dem Flansch 19 des Zwischenstückes 11 lösbar miteinander verbunden.For easier handling and better accessibility when replacing the filter 18, on the one hand the end plate 27 by means of a screw bolt 29, washer 30 and nut 31 with the flange 22 of the exhaust gas receiver 10 and on the other hand the flange 21 of the exhaust gas receiver 10 is also screwed to the flange 19 of the intermediate piece 11 releasably connected.

Das Zwischenstück 11 wiederum verbindet den Abgasreceiver 10 mit dem Abgasgehäuse 13 der Druckwellenmaschine 7 und ist ausnehmbar durch die Flanschverbindung 19, 21 und die Flanschverbindung 20, 23 angeordnet.The intermediate piece 11 in turn connects the exhaust gas receiver 10 to the exhaust gas housing 13 of the pressure wave machine 7 and is removably arranged by the flange connection 19, 21 and the flange connection 20, 23.

Fig. 2 zeigt eine schematische Darstellung einer zweiten Variante der Abgaspartikelfilteranordnung. Hierbei ist das Filter 18 in einem vom eigentlichen Abgasreceiver 10 getrennten Teilstück 12 in Abgasrichtung unmittelbar vor der Druckwellenmaschine 7 angeordnet.FIG. 2 shows a schematic illustration of a second variant of the exhaust gas particle filter arrangement. Here, the filter 18 is arranged in a section 12 separated from the actual exhaust gas receiver 10 in the exhaust gas direction directly in front of the pressure wave machine 7.

In der beispielsweisen Darstellung gemäss Fig. 2 weist der Abgasreceiver 10 einen gegenüber der ersten Variante (Fig.l) geringeren Durchmesser auf und erstreckt sich bis hin zum Teilstück 12. Das Zwischenstück 11 entfällt bei dieser Anordnung.In the exemplary representation according to FIG. 2, the exhaust gas receiver 10 has a smaller diameter than the first variant (FIG. 1) and extends to the section 12. The intermediate piece 11 is omitted in this arrangement.

Zwecks einfacher Handhabung und besserer Zugänglichkeit beim Auswechseln des Filters 18 ist das Teilstück 12 ebenfalls ausnehmbar angeordnet. Einerseits ist der Flansch 12' des Teilstückes 12 durch Schraubverbindung mit dem Flansch 21 des Abgasreceivers 10 und andererseits der Flansch 1.2" ebenfalls mit Schraubverbindung mit dem Flansch 23 des Abgasgehäuses 13 der Druckwellenmaschine 7, lösbar miteinander verbunden.For ease of handling and better accessibility when replacing the filter 18, the section 12 is also arranged to be removable. On the one hand, the flange 12 'of the section 12 is detachably connected to one another by a screw connection with the flange 21 of the exhaust gas receiver 10, and on the other hand the flange 1.2 "is also connected to the flange 23 of the exhaust gas housing 13 of the pressure wave machine 7 with a screw connection.

In Fig. 3 - hier gelten die gleichen Bezugsziffern wie in Fig. l - ist ein Schnitt durch die Abgaspartikelfilteranordnung gemäss der ersten Variante in Fig. 1 dargestellt. Wegen besserer Uebersichtlichkeit sind jedoch lediglich die Abgasreceiverenden und ein Teil des Abgasreceivers 10 sowie ein Teil des Filters 18 dargestellt.In Fig. 3 - here the same reference numbers apply as in Fig. 1 - a section through the exhaust gas particle filter arrangement according to the first variant in Fig. 1 is shown. For the sake of clarity, however, only the exhaust gas receiver ends and part of the exhaust gas receiver 10 and part of the filter 18 are shown.

Das Filter 18 besteht aus einem monolithischen, porösen, hitzebeständigen-und walzenförmigen Kernstück aus keramischen Material vgl. z.B. SAE-Paper No. 810114 vom 23.2.81 "Cellular Ceramic Diesel Particulate Filters" von John S. Howitt et al, und ist mit einer faserigen und hitzebeständigen mattenartigen Umhüllung 24 aus keramischen oder mineralischem Faserstoff versehen, wobei die Enden 24' der mattenartigen Umhüllung 24 das walzenförmige Filter 18 in axialer Richtung überragen und nach innen zur Achse hin geneigt sind, wodurch die Lage des Filters 18 in Längsrichtung fixiert ist. Das Filter 18 samt Umhüllung 24 ist in einem Tragrohr 25 befestigt, das aus hitzebeständigem Blech besteht, welches das Filter 18 samt Umhüllung 24 unter Anpressdruck umschliesst, wobei die Enden des Tragrohres 25 längs einer Mantellinie verschweisst sind. Zwischen dem Tragrohr 25 und dem massiven Mantel des Abgasreceivers 10 befindet sich der ringförmige Abgaszuströmraum 39. Entsprechend der Richtung der Pfeile mit der Bezugsziffer 40 strömt das Abgas aus den Abgaskanälen 8 in den Agaszuströmraum 39 und von dort in den Filtervorraum 41. Der Abgaszuströmraum 39 und der Filtervorraum 41 sind miteinander verbunden. Nach Durchtritt des Abgases durch das Filter 18 gelangt es in das Zwischenstück 11 und wird von dort dem Abgasgehäuse 13 der Druckwellenmaschine 7 zugeleitet.The filter 18 consists of a monolithic, porous, heat-resistant and cylindrical core made of ceramic material cf. e.g. SAE-Paper No. 810114 of February 23, 1981 "Cellular Ceramic Diesel Particulate Filters" by John S. Howitt et al, and is provided with a fibrous and heat-resistant mat-like covering 24 made of ceramic or mineral fiber material, the ends 24 ' of the mat-like covering 24 protrude beyond the cylindrical filter 18 in the axial direction and are inclined inwards towards the axis, as a result of which the position of the filter 18 is fixed in the longitudinal direction. The filter 18 together with the cover 24 is fastened in a support tube 25, which consists of heat-resistant sheet metal, which encloses the filter 18 together with the cover 24 under contact pressure, the ends of the support tube 25 being welded along a surface line. The annular exhaust gas inflow space 39 is located between the support tube 25 and the solid casing of the exhaust gas receiver 10. According to the direction of the arrows with the reference number 40, the exhaust gas flows out of the exhaust gas channels 8 into the agas inflow space 39 and from there into the filter antechamber 41. The exhaust gas inflow space 39 and the filter anteroom 41 are connected to one another. After the exhaust gas has passed through the filter 18, it reaches the intermediate piece 11 and is fed from there to the exhaust gas housing 13 of the pressure wave machine 7.

Zur Befestigung des Tragrohres 25 sind am abströmseitigen Ende des Abgasreceivers 10 ein Haltering 26 und an dem anderen Ende des Abgasreceivers 10 wenigstens vier Haltenocken 28 jeweils konzentrisch angeordnet. Zwischen dem Haltering 26 und dem Tragrohr 25 befindet sich eine Asbestdichtung 33 um zu vermeiden, dass Abgas unter Umgehung des Filters 18 direkt in das Zwischenstück 11 ge-langt, während die Asbestdichtungen 33' die Abdichtung gegen die Umgebung übernehmen.To attach the support tube 25, a retaining ring 26 is arranged at the downstream end of the exhaust gas receiver 10 and at least four retaining cams 28 are each arranged concentrically at the other end of the exhaust gas receiver 10. An asbestos seal 33 is located between the holding ring 26 and the support tube 25 in order to prevent exhaust gas from reaching the intermediate piece 11 g bypassing the filter 18, while the asbestos seals 33 ′ take over the sealing against the environment.

In Fig. 4 - hier gelten die im wesentlichen gleichen Bezugsziffern wie in Fig. 3 - ist ein Schnitt durch die Abgaspartikelfilteranordnung gemäss der Variante in Fig. 2 dargestellt. Der Aufbau des Filters 18 ist der gleiche wie in Fig. 3 ausführlich beschrieben. An einem Ende des Tragrohres 25 ist ein Flansch 25' vorgesehen, der zwischen dem Flansch 21 des Abgasreceivers 10 und dem Flansch 12' des Teilstückes 12 eingeklemmt und durch Schraubverbindung 29, 30, 31 befestigt ist. Zwischen dem Tragrohr 25 und dem massiven Mantel des Teilstückes 12 befindet sich eine elastische hitzebeständige Schicht 34 aus Drahtgeflecht. Die einseitige Befestigung des Tragrohres 25 und die Auskleidung mit der elastischen hitzebeständigen Schicht 34 wurde gewählt, um eventuelle auftretende Vibrationen der Maschine abzudämpfen und bereits auf das Tragrohr 25 übertragene Schwingungen rascher abklingen zu lassen. Darüber hinaus muss den durch thermischen Einfluss hervorgerufenen unterschiedlichen Wärmeausdehnungen der verschiedenen Materialien genügend Rechnung getragen werden. Bei beidseitiger Fixierung des Tragrohres 25 wür - den thermische Spannungen zur eventuellen Zerstörung der Befestigung des Tragrohres 25 führen. Der Flansch 12" des Teilstückes 12 ist unter Zwischenschaltung einer Dichtung 33' mit dem Flansch 23 des Abgasgehäuses 13 der Druckwellenmaschine 7 durch Schraubverbindung 29, 30, 31 verbunden.In Fig. 4 - here the essentially the same reference numerals as in Fig. 3 apply - a section through the exhaust gas particle filter arrangement according to the variant in Fig. 2 is shown. The construction of the filter 18 is the same as described in detail in FIG. 3. At one end of the Support tube 25, a flange 25 'is provided, which is clamped between the flange 21 of the exhaust gas receiver 10 and the flange 12' of the section 12 and is fastened by a screw connection 29, 30, 31. An elastic heat-resistant layer 34 made of wire mesh is located between the support tube 25 and the solid jacket of the section 12. The one-sided fastening of the support tube 25 and the lining with the elastic, heat-resistant layer 34 was chosen in order to dampen any vibrations of the machine and to allow vibrations already transmitted to the support tube 25 to subside more quickly. In addition, the different thermal expansions of the different materials caused by thermal influence must be taken into account sufficiently. If the support tube 25 is fixed on both sides, thermal stresses would lead to the destruction of the attachment of the support tube 25. The flange 12 ″ of the section 12 is connected to the flange 23 of the exhaust gas housing 13 of the pressure wave machine 7 by means of a screw connection 29, 30, 31 with the interposition of a seal 33 ′.

Die Wirkungsweise des Filters 18 während des Fahrbetriebes wird nachfolgend beschrieben:

  • Tritt bei Teillast eine Verstopfung des Filters 18 auf, dann bewirkt der Druckverlust des Filters 18 primär eine Behinderung des Gaswechsels des Motors, was eine Reduktion der Nutzleistung zur Folge hat. Die Leistungseinbusse wird der-Fahrer durch mehr Brennstoff wettmachen; dadurch steigt die Gastemperatur stark an. Fordert der Fahrer dem Fahrzeug genügend Leistung ab, kommt es automatisch zum Abbrennen des Russes. Die Entflammtemperatur von Russ beträgt ca. 650°C.
The operation of the filter 18 during driving is described below:
  • If the filter 18 becomes blocked at partial load, the pressure loss of the filter 18 primarily causes an impediment to the gas exchange of the engine, which results in a reduction in the useful power. The loss of performance is the - make up driver through more fuel; this causes the gas temperature to rise sharply. If the driver demands sufficient power from the vehicle, the soot burns off automatically. The flame temperature of soot is approx. 650 ° C.

Ein Temperatur-Stoss kann aber auch durch eine kurzfristige Betätigung der Ladeluftklappe 6, des Abgasbypassventils 36 oder der Rezirkulationsklappe 37 zustandekommen. Beim kurzfristigen Schliessen der Ladeluftklappe 6 oder der Rezirkulationsklappe 37 oder beim kurzfristigen Oeffnen des Abgasbypassventils 36 wird kurzfristig die Ladeluftdichte und somit der Luftüberschuss verringert, was bei gleichbleibender Brennstoffeinspritzmenge die Gastemperatur erhöht.A temperature surge can also be caused by a brief actuation of the charge air flap 6, the exhaust gas bypass valve 36 or the recirculation flap 37. When the charge air flap 6 or the recirculation flap 37 is briefly closed, or when the exhaust gas bypass valve 36 is briefly opened, the charge air density and thus the excess air are briefly reduced, which increases the gas temperature while the fuel injection quantity remains the same.

Die Druckwellenmaschine 7 toleriert die hohen Temperaturspitzen, weil der Rotor mit Frischluft gespült wird. Durch Temperaturstösse kann das der Druckwellenmaschine 7 eigene Abgasrezirkulationsvermögen gesteigert werden, ohne Verschmutzungsgefahr für den Rotor.The pressure wave machine 7 tolerates the high temperature peaks because the rotor is flushed with fresh air. The shock wave machine 7's own exhaust gas recirculation capacity can be increased by temperature surges without risk of contamination of the rotor.

B e z e i c h n u n g s l i sB e i c h n u n g s l i s

  • 1 Zylinderkopf1 cylinder head
  • 2 Zylinder2 cylinders
  • 3 Einlass/Saugkanäle3 inlet / suction channels
  • 4 Sammelrohr4 manifold
  • 5 Ladeluftleitung5 Charge air line
  • 6 Ladeluftklappe6 charge air flap
  • 7 Druckwellenmaschine7 pressure wave machine
  • 8 Abgaskanäle8 exhaust channels
  • 9 Abgaskrümmer9 exhaust manifolds
  • 10 Abgasreceiver10 exhaust gas receivers
  • 10' Oeffnung im 1010 'opening in the 10th
  • 11 Zwischenstück11 intermediate piece
  • 12 Teilstück des 1012 section of the 10th
  • 12' Flansch des 1212 'flange of the 12th
  • 12" Flansch des 1212 "flange of the 12th
  • 13 Abgasgehäuse13 exhaust housing
  • 14 Frischluftansaugleitung14 fresh air intake line
  • 15 Auspuffleitung15 exhaust pipe
  • 16 Riemenscheibe der Druckwellenmaschine16 Pulley of the pressure wave machine
  • 16' Keilriemen16 'V-belt
  • 17 Motorwelle17 motor shaft
  • 17' Motorriemenscheibe17 'Motor pulley
  • 18 Abgaspartikelfilter18 Exhaust particle filter
  • 19 Flansch des Zwischenstückes 1119 flange of the intermediate piece 11
  • 20 Flansch des Zwischenstückes 1120 flange of the intermediate piece 11
  • 21 Flansch des Abgasreceivers 1021 Flange of the exhaust gas receiver 10
  • 22 Flansch des Abgasreceivers 1022 Flange of the exhaust gas receiver 10
  • 23 Flansch des Abgasgehäuses 1323 Flange of the exhaust housing 13
  • 24 mattenartige Umhüllung24 mat-like wrapping
  • 24' Ende der mattenartigen Umhüllung24 'end of mat-like wrapping
  • 25 Tragrohr25 support tube
  • 25' Flansch des Tragrohres25 'flange of the support tube
  • 26 konzentrischer Haltering an 1026 concentric retaining ring on 10
  • 27 Abschlussplatte27 end plate
  • 28 konzentrische Haltenocken an 1028 concentric holding cams on 10
  • 29 Schraubenbolzen29 bolts
  • 30 Unterlegescheibe30 washer
  • 31 Mutter31 mother
  • 32 Ringnut32 ring groove
  • 33,33' Asbestdichtung 33,33 'Asbestdichtun g
  • 34 elastische hitzebeständige Schicht (Drahtgeflecht)34 elastic heat-resistant layer (wire mesh)
  • 35 Bypass35 bypass
  • 36 Abgasbypassventil36 Exhaust bypass valve
  • 37 Rezirkulationsklappe37 Recirculation valve
  • 39 Abgaszuströmraum39 Exhaust gas inflow space
  • 40 Abgasströmrichtung40 Exhaust gas flow direction
  • 41 Filtervorraum41 filter vestibule

Claims (17)

1. Vorrichtung zur Begrenzung der Abgaspartikelemission bei der Aufladung von Brennkraftmaschinen, im wesentlichen bestehend aus einer Druckwellenmaschine (7) mit Ladeluftklappe (6) und/oder Rezirkulationsklappe (37) und/ oder Abgasbypassventil (36), und in einen Abgasreceiver (10) mündende Abgaskrümmer (9), dadurch gekennzeichnet, dass im Hochdruckteil des Abgassystems vor der Druckwellenmaschine (7) ein Abgaspartikelfilter (18) angeordnet ist.1. Device for limiting the emission of exhaust gas particles when charging internal combustion engines, consisting essentially of a pressure wave machine (7) with charge air flap (6) and / or recirculation flap (37) and / or exhaust gas bypass valve (36), and opening into an exhaust gas receiver (10) Exhaust manifold (9), characterized in that an exhaust gas particle filter (18) is arranged in the high-pressure part of the exhaust system in front of the pressure wave machine (7). 2. Vorrichtung nach Anspruch 1, dadurch. gekennzeichnet, dass das Filter (18) im Abgasreceiver (10) selbst angeordnet ist.2. Device according to claim 1, characterized. characterized in that the filter (18) is arranged in the exhaust gas receiver (10) itself. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Filter (18) in einem vom eigentlichen Abgasreceiver (10) getrennten Teilstück (12) in Abgasrichtung unmittelbar vor der Druckwellenmaschine (7) angeordnet ist.3. Device according to claim 1, characterized in that the filter (18) is arranged in a section (12) separate from the actual exhaust gas receiver (10) in the exhaust gas direction directly in front of the pressure wave machine (7). 4. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekenn- zeichnet, dass das Filter (18) als austauschbare Baueinheit ausgebildet ist.4. Device according to claim 1, 2 or 3, characterized g ekenn- characterized in that the filter (18) is designed as a replaceable assembly. 5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Filter (18) aus einem monolithischen porösen und hitzebeständigen Kern besteht.5. Device according to one of claims 1 to 4, characterized in that the filter (18) consists of a monolithic porous and heat-resistant core. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Kern des Filters (18) von einer faserigen mattenartigen und hitzebeständigen Umhüllung (24) umgeben ist.6. The device according to claim 5, characterized in that the core of the filter (18) of a fibrous mat-like and heat-resistant covering (24) is surrounded. 7. Vorrichtung nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass der Kern des Filters (18) samt der Umhüllung (24) in einem zylindrischen Tragrohr (25) angeordnet ist, das an einem Ende von dem im Abgasreceiver (10) vorgesehenen Haltering (26) und am anderen Ende von den im Abgasreceiver (10) vorgesehenen Haltenocken (28) gehalten wird.7. The device according to claim 1 to 6, characterized in that the core of the filter (18) together with the sheath (24) is arranged in a cylindrical support tube (25) which at one end of the retaining ring (10) provided in the exhaust gas receiver (10) 26) and is held at the other end by the holding cams (28) provided in the exhaust gas receiver (10). 8. Vorrichtung nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass der Kern des Filters (18) samt der Umhüllung (24) in einem zylindrischen Tragrohr (25) angeordnet sind, das zwischen dem Flansch (21) des Abgasreceivers (10) und dem Flansch (12') des Teilstückes (12) befestigt ist.8. The device according to claim 1 to 6, characterized in that the core of the filter (18) together with the sheath (24) are arranged in a cylindrical support tube (25) between the flange (21) of the exhaust gas receiver (10) and Flange (12 ') of the section (12) is attached. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass das Tragrohr (25) aus hitzebeständigem Blech besteht.9. The device according to claim 8, characterized in that the support tube (25) consists of heat-resistant sheet metal. 10. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen dem Tragrohr (25) und dem massiven Mantel des Teilstückes (12) des Abgasreceivers (10) eine elastische hitzebeständige Schicht (34) angeordnet ist.10. Device according to one of claims 1 to 8, characterized in that an elastic heat-resistant layer (34) is arranged between the support tube (25) and the solid jacket of the section (12) of the exhaust gas receiver (10). 11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Schicht (34) durch ein elastisches hitzebeständiges Drahtgeflecht gebildet ist.11. The device according to claim 10, characterized in that the layer (34) is formed by an elastic heat-resistant wire mesh. 12. Vorrichtung nach Anspruch 5 bis 8, dadurch gekennzeichnet, dass der monolithische poröse Kern des Filter (18) aus einem keramischen Material mit hoher Temperaturwechselbeständigkeit besteht.12. The device according to claim 5 to 8, characterized in that the monolithic porous core of the filter (18) made of a ceramic material with high temperature changes resistance exists. 13. Vorrichtung nach Anspruch 2 bis 4, dadurch gekennzeichnet, dass der monolithische poröse Kern des Filters (18) aus Stahlwolle besteht.13. The apparatus according to claim 2 to 4, characterized in that the monolithic porous core of the filter (18) consists of steel wool. 14. Verfahren zum Betrieb der Vorrichtung zur Aufladung einer Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass zur Erhöhung der Abgastemperatur vor dem Filter (18) der Brennkraftmaschine mehr Eigenbrennstoff zugeführt wird.14. The method for operating the device for charging an internal combustion engine according to claim 1, characterized in that more internal fuel is supplied to the internal combustion engine to increase the exhaust gas temperature upstream of the filter (18). 15. Verfahren zum Betrieb der Vorrichtung zur Aufladung einer Brennkraftmaschine mit einer Ladeluftklappe (6) in der Ladeluftleitung (5) nach Anspruch 1, dadurch gekennzeichnet, dass zwecks Erhöhung der-Abgastemperatur vor dem Filter (18) die Ladeluftklappe (6) in der Ladeluftleitung (5) kurzfristig geschlossen und nach erfolgter Regeneration des Filters (18) wieder normal betätigt wird.15. The method for operating the device for charging an internal combustion engine with a charge air flap (6) in the charge air line (5) according to claim 1, characterized in that in order to increase the exhaust gas temperature upstream of the filter (18), the charge air flap (6) in the charge air line (5) closed for a short time and after the filter (18) has been regenerated is operated normally again. 16. Verfahren zum Betrieb der Vorrichtung zur Aufladung einer Brennkraftmaschine mit einer RezirkulationSklappe (37) in der Frischluftansaugleitung (14) der Druckwellenmaschine nach Anspruch 1, dadurch gekennzeichnet, dass zwecks Erhöhung der Abgastemperatur vor dem Filter (18) die Rezirkulationsklappe (37) in der Frischluftanpaugleitung (14) der Druckwellenmaschine (7) kurzfristig geschlossen und nach erfolgter Regeneration des Filters (18) wieder normal betätigt wird.16. A method for operating the device for charging an internal combustion engine with a recirculation flap (37) in the fresh air intake line (14) of the pressure wave machine according to claim 1, characterized in that in order to increase the exhaust gas temperature upstream of the filter (18), the recirculation flap (37) in the Fresh air intake line (14) of the pressure wave machine (7) is briefly closed and, after regeneration of the filter (18), is operated normally again. 17. Verfahren zum Betrieb der Vorrichtung zur Aufladung einer Brennkraftmaschine mit einem Abgasbypassventil (36) im Bypass (35) zwischen Abgasgehäuse (13) und Auspuffleitung (15) der Druckwellenmaschine (7) nach Anspruch 1, dadurch gekennzeichnet, dass zwecks Erhöhung der Abgastemperatur vor dem Filter (18) das Abgasbypassventil (36) kurzfristig geöffnet und nach erfolgter Regeneration des Filters (18) wieder normal betätigt wird.17. A method for operating the device for charging an internal combustion engine with an exhaust gas bypass valve (36) in the bypass (35) between the exhaust gas housing (13) and the exhaust line (15) of the pressure wave machine (7) Claim 1, characterized in that the exhaust gas bypass valve (36) is opened briefly in order to increase the exhaust gas temperature upstream of the filter (18) and is operated again normally after the filter (18) has been regenerated.
EP82200907A 1981-08-11 1982-07-15 Supercharged internal-combustion engine with a filter for exhaust gas particles Expired EP0072059B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200907T ATE19676T1 (en) 1981-08-11 1982-07-15 CHARGED ENGINE WITH EXHAUST PARTICULATE FILTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5155/81 1981-08-11
CH515581 1981-08-11

Publications (2)

Publication Number Publication Date
EP0072059A1 true EP0072059A1 (en) 1983-02-16
EP0072059B1 EP0072059B1 (en) 1986-05-07

Family

ID=4288852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200907A Expired EP0072059B1 (en) 1981-08-11 1982-07-15 Supercharged internal-combustion engine with a filter for exhaust gas particles

Country Status (7)

Country Link
US (1) US4553387A (en)
EP (1) EP0072059B1 (en)
JP (1) JPS5838312A (en)
AT (1) ATE19676T1 (en)
CA (1) CA1185538A (en)
DE (1) DE3270986D1 (en)
ES (1) ES514858A0 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517950A (en) * 1982-06-02 1985-05-21 Bbc Brown, Boveri & Company, Limited Method and device for controlling the recirculation of exhaust gas in a pressure wave supercharger for an internal combustion engine
EP0152870A2 (en) * 1984-02-21 1985-08-28 Comprex Ag Regeneration method for the exhaust filter of a combustion engine
FR2586269A1 (en) * 1985-08-17 1987-02-20 Daimler Benz Ag ARRANGEMENT OF A SOOT FILTER IN THE EXHAUST GAS SYSTEM OF AN INTERNAL COMBUSTION ENGINE WITH A TURBOCHARGER ON EXHAUST GASES
US4676217A (en) * 1985-02-19 1987-06-30 Mazda Motor Corporation Internal combustion engine having a supercharger
EP0467247A1 (en) * 1990-07-16 1992-01-22 Cummins Engine Company, Inc. Diesel particulate trap mounting system
FR2686652A1 (en) * 1992-01-29 1993-07-30 Shell Petroles Method and device for continuously eliminating unburnt solid particles by postcombustion
EP0831209A1 (en) * 1996-09-19 1998-03-25 Toyota Jidosha Kabushiki Kaisha A device for purifying the exhaust gas of an internal combustion engine
WO2013001311A1 (en) * 2011-06-29 2013-01-03 Perkins Engines Company Limited Method and apparatus for controlling the operation of a turbocharged internal combustion engine

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6127926U (en) * 1984-07-24 1986-02-19 マツダ株式会社 supercharged engine
JPS6136132U (en) * 1984-08-08 1986-03-06 マツダ株式会社 supercharged engine
CH665002A5 (en) * 1984-11-09 1988-04-15 Bbc Brown Boveri & Cie METHOD AND DEVICE FOR OPERATING A DIESEL ENGINE WITH AN EXHAUST GAS FILTERING DEVICE.
GB8516420D0 (en) * 1985-06-28 1985-07-31 Ontario Research Foundation Diesel particulate traps
DE3767056D1 (en) * 1986-07-08 1991-02-07 Comprex Ag Baden INTERNAL COMBUSTION ENGINE WITH PRESSURE SHAFT CHARGER AND LAMDA PROBE.
US4835963A (en) * 1986-08-28 1989-06-06 Allied-Signal Inc. Diesel engine particulate trap regeneration system
JPS6348930U (en) * 1986-09-17 1988-04-02
CH677814A5 (en) * 1989-01-27 1991-06-28 Asea Brown Boveri
US5679249A (en) * 1991-12-24 1997-10-21 Pall Corporation Dynamic filter system
US6117322A (en) * 1993-06-23 2000-09-12 Pall Corporation Dynamic filter system
BR9708311A (en) * 1996-03-05 1999-08-03 Swissauto Eng Sa Otto cycle motor with pressure wave charger
JP3427685B2 (en) * 1997-07-31 2003-07-22 トヨタ自動車株式会社 Exhaust gas purification device for internal combustion engine
ES2190798T3 (en) 1997-08-29 2003-08-16 Swissauto Eng Sa COMBUSTION MACHINE WITH PRESSURE WAVE MACHINE.
SE519922C2 (en) * 1998-12-07 2003-04-29 Stt Emtec Ab Device and process for exhaust purification and use of the device
DE29916158U1 (en) * 1999-09-14 1999-12-09 Emitec Emissionstechnologie Catalytic converter for cleaning exhaust gas and exhaust gas purification arrangement with a catalytic converter
US6314735B1 (en) 2000-02-23 2001-11-13 Ford Global Technologies, Inc. Control of exhaust temperature in lean burn engines
US6745568B1 (en) * 2003-03-27 2004-06-08 Richard K. Squires Turbo system and method of installing
DE102006020522A1 (en) 2006-05-03 2007-11-08 Robert Bosch Gmbh Method for operating an IC engine with pressure pulse supercharger to drive air into engine in relation to actual engine parameters
US20070289293A1 (en) * 2006-06-15 2007-12-20 Gm Global Technology Operations, Inc. Diesel Exhaust System Reversible Particulate Filter
DE102008052113A1 (en) * 2008-10-20 2010-04-22 Benteler Automobiltechnik Gmbh Internal combustion engine with a pressure wave supercharger and method for operating ancillary components of an internal combustion engine
DE102011118765A1 (en) 2011-11-17 2013-05-23 Benteler Automobiltechnik Gmbh Petrol engine for vehicle, has three-way catalytic converter arranged in exhaust line between engine outlet and pressure wave supercharger inlet, and particulate filter arranged in exhaust line after pressure wave supercharger outlet
DE102012101204B4 (en) * 2012-02-15 2016-05-12 Benteler Automobiltechnik Gmbh Pressure wave charger arrangement with exhaust aftertreatment unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB781659A (en) * 1955-04-01 1957-08-21 Dudley Brian Spalding Improvements relating to pressure exchanger apparatus
DE2027883A1 (en) * 1970-06-06 1971-12-16 Daimler-Benz Ag, 7000 Stuttgart Internal combustion engine
FR2215092A5 (en) * 1972-11-29 1974-08-19 Bbc Brown Boveri & Cie
DE2326989A1 (en) * 1973-05-26 1974-12-12 Daimler Benz Ag OTTO ENGINE WITH A TURBOCHARGER AND A DETOXIFICATION SYSTEM
CH593421A5 (en) * 1976-06-29 1977-11-30 Bbc Brown Boveri & Cie
DE2655932A1 (en) * 1976-12-10 1978-06-15 Daimler Benz Ag IC engine with turbocharger - has divided exhaust with self cleaning filter in each branch

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2800120A (en) * 1953-11-30 1957-07-23 Jendrassik Developments Ltd Pressure exchangers
US3011487A (en) * 1958-06-17 1961-12-05 Ite Circuit Breaker Ltd Adjustable stator plate for variable speed aero-dynamic wave machine
GB895808A (en) * 1960-03-11 1962-05-09 Power Jets Res & Dev Ltd Improvements in or relating to supercharging reciprocating internal-combustion engines
US3937015A (en) * 1973-05-03 1976-02-10 Nippondenso Co., Ltd. Pleated filter in the exhaust manifold
US3951626A (en) * 1974-10-04 1976-04-20 Kreisler Manufacturing Corporation High temperature filter
JPS5244324A (en) * 1975-10-07 1977-04-07 Ishikawajima Harima Heavy Ind Co Ltd Denitric acid device used for a diesel engine
US4211075A (en) * 1978-10-19 1980-07-08 General Motors Corporation Diesel engine exhaust particulate filter with intake throttling incineration control
US4329162A (en) * 1980-07-03 1982-05-11 Corning Glass Works Diesel particulate trap

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB781659A (en) * 1955-04-01 1957-08-21 Dudley Brian Spalding Improvements relating to pressure exchanger apparatus
DE2027883A1 (en) * 1970-06-06 1971-12-16 Daimler-Benz Ag, 7000 Stuttgart Internal combustion engine
FR2215092A5 (en) * 1972-11-29 1974-08-19 Bbc Brown Boveri & Cie
DE2326989A1 (en) * 1973-05-26 1974-12-12 Daimler Benz Ag OTTO ENGINE WITH A TURBOCHARGER AND A DETOXIFICATION SYSTEM
CH593421A5 (en) * 1976-06-29 1977-11-30 Bbc Brown Boveri & Cie
DE2655932A1 (en) * 1976-12-10 1978-06-15 Daimler Benz Ag IC engine with turbocharger - has divided exhaust with self cleaning filter in each branch

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517950A (en) * 1982-06-02 1985-05-21 Bbc Brown, Boveri & Company, Limited Method and device for controlling the recirculation of exhaust gas in a pressure wave supercharger for an internal combustion engine
EP0152870A2 (en) * 1984-02-21 1985-08-28 Comprex Ag Regeneration method for the exhaust filter of a combustion engine
EP0152870A3 (en) * 1984-02-21 1985-10-09 Comprex Ag Regeneration method for the exhaust filter of a combustion engine
US4615172A (en) * 1984-02-21 1986-10-07 Bbc Brown, Boveri & Company, Limited Process for regenerating the exhaust-gas particle filter of internal-combustion engines
US4676217A (en) * 1985-02-19 1987-06-30 Mazda Motor Corporation Internal combustion engine having a supercharger
FR2586269A1 (en) * 1985-08-17 1987-02-20 Daimler Benz Ag ARRANGEMENT OF A SOOT FILTER IN THE EXHAUST GAS SYSTEM OF AN INTERNAL COMBUSTION ENGINE WITH A TURBOCHARGER ON EXHAUST GASES
EP0467247A1 (en) * 1990-07-16 1992-01-22 Cummins Engine Company, Inc. Diesel particulate trap mounting system
FR2686652A1 (en) * 1992-01-29 1993-07-30 Shell Petroles Method and device for continuously eliminating unburnt solid particles by postcombustion
EP0831209A1 (en) * 1996-09-19 1998-03-25 Toyota Jidosha Kabushiki Kaisha A device for purifying the exhaust gas of an internal combustion engine
US5941066A (en) * 1996-09-19 1999-08-24 Toyota Jidosha Kabushiki Kaisha Device for purifying the exhaust gas of an internal combustion engine
WO2013001311A1 (en) * 2011-06-29 2013-01-03 Perkins Engines Company Limited Method and apparatus for controlling the operation of a turbocharged internal combustion engine

Also Published As

Publication number Publication date
US4553387A (en) 1985-11-19
JPS5838312A (en) 1983-03-05
ES8307987A1 (en) 1983-08-16
JPS6229608B2 (en) 1987-06-26
ES514858A0 (en) 1983-08-16
DE3270986D1 (en) 1986-06-12
EP0072059B1 (en) 1986-05-07
ATE19676T1 (en) 1986-05-15
CA1185538A (en) 1985-04-16

Similar Documents

Publication Publication Date Title
EP0072059A1 (en) Supercharged internal-combustion engine with a filter for exhaust gas particles
DE3874924T2 (en) DIESEL EXHAUST PARTICLE FILTER.
DE102005062475A1 (en) System for removing substances from filter device in engines has several blocking parts for blocking a flow directed through one of several filter ports in filter
DE4439940A1 (en) Method for reducing nitrous oxide emissions from supercharged diesel engine
DE102005062398B4 (en) Regenerating a particulate filter with an oxidation catalytic coating
EP1405995B1 (en) Motor system with turbocharger and exhaust gas recirculation as well as method for the operation thereof
DE102005062473A1 (en) Filter service system for removing matter from filtering device, includes gas pressurization assembly having orifices positioned on the surface to direct flow beyond blocking apparatus of the filtering device, and matter collection assembly
DE102006000785A1 (en) On-vehicle service system for removal of matter from filter of single filtering device exhaust system includes controllable filter bypass line connecting inlet and outlet of filter; and receptacle fluidly connected to filter
EP0532031A1 (en) Device for the thermal regeneration of diesel engine exhaust particle filters
DE19525134C2 (en) Device for cleaning exhaust gas from a mixture-compressing internal combustion engine
EP2157309B1 (en) Combustion engine
DE112007000787T5 (en) nozzle assembly
DE4222162C2 (en) Process for rapidly achieving the ignition temperature of the pollutants in the exhaust gases of an internal combustion engine and device therefor
WO2009115405A1 (en) Method for the regeneration of a diesel particle filter of an internal combustion engine as well as a corresponding device
DE102008048529A1 (en) flame glow plug
DE102011081569A1 (en) Device for dividing total airflow for operating exhaust gas burner utilized for burning particulate filter in exhaust system of diesel engine of motor car, has venturi tube with total- and inner air connections for division of total airflow
WO2010070100A1 (en) Exhaust gas cleaning system and method for operating an exhaust gas cleaning system
DE10120973B4 (en) Emission control system with particle filter means and regeneration method for particulate filter means
DE102006041284B4 (en) Method and device for the thermal regeneration of perfused particle filters
DE3834499C2 (en)
DE102010042035A1 (en) Method for cleaning particulate filter system of exhaust gas post-treatment system for internal combustion engine i.e. large diesel engine in e.g. ships, involves collecting ash and/or soot particles with collecting device
EP1026380B1 (en) Combustion engine with a supply device for a combustion medium
EP1749686B1 (en) Exhaust system for motor vehicle
DE19851433A1 (en) Internal combustion engine exhaust gas purifying device has an exhaust gas recycle device with a control flap for returning a part of the purified gas
DE102019004384A1 (en) Device and method for cleaning exhaust gases

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830321

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19860507

Ref country code: BE

Effective date: 19860507

REF Corresponds to:

Ref document number: 19676

Country of ref document: AT

Date of ref document: 19860515

Kind code of ref document: T

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19860531

REF Corresponds to:

Ref document number: 3270986

Country of ref document: DE

Date of ref document: 19860612

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19880731

Ref country code: CH

Effective date: 19880731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900615

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900618

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19900628

Year of fee payment: 9

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910715

Ref country code: AT

Effective date: 19910715

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19920331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960801

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980401