EP0367280B2 - Système de filtre de particules - Google Patents
Système de filtre de particules Download PDFInfo
- Publication number
- EP0367280B2 EP0367280B2 EP89120374A EP89120374A EP0367280B2 EP 0367280 B2 EP0367280 B2 EP 0367280B2 EP 89120374 A EP89120374 A EP 89120374A EP 89120374 A EP89120374 A EP 89120374A EP 0367280 B2 EP0367280 B2 EP 0367280B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- particle filter
- burner chamber
- flow
- filter system
- gas conduit
- 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.)
- Expired - Lifetime
Links
- 239000002245 particle Substances 0.000 title claims abstract description 55
- 238000002485 combustion reaction Methods 0.000 claims description 83
- 239000007789 gas Substances 0.000 claims description 63
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- 239000001301 oxygen Substances 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000011819 refractory material Substances 0.000 claims 1
- 230000008929 regeneration Effects 0.000 abstract description 15
- 238000011069 regeneration method Methods 0.000 abstract description 15
- 239000000446 fuel Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 239000003779 heat-resistant material Substances 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 206010006895 Cachexia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 208000026500 emaciation Diseases 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
- F01N3/025—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 fuel burner or by adding fuel to exhaust
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/30—Exhaust treatment
Definitions
- the invention relates to a particle filter system with an in an exhaust pipe of a diesel engine flowable particle filter and with a Burner, the burner having an atomizing nozzle which by means of a gas line can be supplied with oxygen-containing gas, and to which a primary combustion chamber with a primary swirl flow and a secondary combustion chamber connect, the direction of rotation of the swirl flow in the primary combustion chamber the sense of rotation of the swirl flow in the secondary combustion chamber is opposite.
- Particle emission is a procedural disadvantage of the diesel engine. So far, attempts have been made to solve this problem by internal engine Measures to solve. The increasingly stringent legal requirements for vehicle engines will require the use of Particle filters in the exhaust gas flow.
- Such a particle filter is described in US-A-4,651,524.
- This particle filter system has one in an exhaust pipe Diesel engine with flowable particle filter and a burner, which has an atomizer nozzle which contains oxygen by means of a gas line Gas can be supplied.
- the swirl devices for the primary flow and generate currents for the secondary flow opposite twist.
- Construction of the particle filter system with the burner, the combustion chambers and the supply of the exhaust gas so designed that for operation the burner has a bypass line through which during of the combustion process exhaust gas is derived. This is done during the burning process always, d. H. to a small extent even when idling.
- the exhaust gas is fed axially to the particle filter system, whereby the corresponding line in the flow direction in front of the burner one connecting flange begins and the line continues Flow course around the burner is guided.
- the invention has for its object to a particle filter system create, with the filter surface evenly loaded and regenerated to use the particle filter optimally and before Protect thermal stress cracks.
- the particle filter only can flow in the full flow of the exhaust pipe of the diesel engine, that the atomizer nozzle is an air swirl atomizer nozzle, the outlet of which swirl opens into the primary combustion chamber and the Air swirl atomizer nozzle in the primary combustion chamber a torus vortex generates the primary combustion chamber within the flow direction front part of the secondary combustion chamber is arranged that the Exhaust line tangentially generating swirl on the circumference of the secondary combustion chamber is connected and that the exhaust pipe in the flow direction front part of the secondary combustion chamber opens.
- the fuel-air mixture joins Swirl from the air swirl atomizer nozzle into the primary combustion chamber and forms a torus vortex there.
- the freshly blown in hits this torus vortex Mixture and is intensively processed by multiple recirculation.
- the stationary torus vortex also acts as a flame holder, which ensures a stable flame in the primary combustion chamber is.
- the arrangement of the primary chamber within the flow direction front part of the secondary combustion chamber offers the advantage short overall length of the particle filter system, an advantage that the exhaust pipe tangentially generating swirl on the circumference of the secondary combustion chamber is connected and in that the exhaust pipe in the flow direction opens the front part of the secondary combustion chamber is further strengthened, since the mixing and homogenization path of the Exhaust gas up to the particle filter is maximized.
- the combustion chamber cooled by the engine exhaust the heat absorbed regeneration directly benefits.
- openings on the circumference of the primary combustion chamber prevented negative effects of the exhaust gas pulsations of the diesel engine on the stability of the flame of the primary combustion chamber and allows an admixture of oxygen-containing exhaust gas into the primary combustion chamber.
- the openings are in the flow direction seen arranged in the first third of the primary combustion chamber and their cross section is 5% to 20% of the cross section of the primary combustion chamber. This area has been chosen for a sensitivity to pressure fluctuation insensitivity proven.
- a baffle plate is coaxial with the outlet opening the primary combustion chamber arranged in front of the particle filter.
- the baffle plate is preferably circular, and their diameter is approximately 60% and their distance from the primary chamber end approximately 150% of the diameter of the primary chamber. This offers the advantage that if the ignition fails, the fuel is not in the Core area of the particulate filter can result in overheating and partial destruction of the filter would result. Because of the relative small diameter of the baffle plate and its large distance from the baffle plate does not effect the outlet opening of the primary combustion chamber substantial flow control, so that the uniformity of the Actuation of the particle filter remains guaranteed.
- the production of the baffle plate from heat-resistant material offers the advantage that the baffle plate due to the high thermal stress in Hot gas flow from the primary combustion chamber is not destroyed by overheating becomes.
- this task is particularly suitable Ceramics.
- the gas line with the pressure side of a positive displacement fan driven by the internal combustion engine connected is. This represents a simple form of air supply of the burner.
- the delivery characteristics of the displacement fan can thereby arranged a relief valve in the gas line is to be modified in a simple manner.
- the gas line via a solenoid valve and a flow restrictor which is preferably designed as a supercritical nozzle with a pressure vessel of constant or approximately constant pressure is connected, in the case of a compressed air source, as in Compressed air tanks of commercial vehicles are given in the normal case, one elegant solution for supplying air to the primary combustion chamber.
- the Supercritical nozzle has the advantage that even with certain Pressure fluctuations in the storage container an almost constant amount of air is delivered.
- the particle filter system 2 consists of a burner 3 and a particle filter 7, both in the main flow an exhaust pipe 10 of a diesel engine 1 are arranged.
- the burner 3 consists of an air swirl nozzle 5, a primary combustion chamber 6 and a secondary combustion chamber 9.
- the air swirl atomizer nozzle 5 is supplied by a conveyor and metering device, not shown, via the Fuel supply line 18 supplied with fuel of low pressure
- the supply of compressed air low Pressure takes place via the gas line 4. This is in the embodiment according to FIG. 1 with one of the diesel engine 1 driven displacement blower 15 connected to which a relief valve 11 is assigned.
- the air swirl atomizer nozzle 5 is supercritical via a solenoid valve 21 flowed through nozzle 19 connected to a pressure vessel 20.
- the air swirl atomizer nozzle 5 is followed by the primary combustion chamber 6.
- the primary combustion chamber 6 sits coaxially in the secondary combustion chamber 9, on the front wall 22 it is attached.
- the primary combustion chamber 6 has an axial outlet opening 8, the diameter of which is approximately 60 to 80% of the Diameter of the primary combustion chamber 6 is. In addition, are at the periphery of the primary combustion chamber 6 in the - Seen in the direction of flow - front third openings 12 are attached These openings have one Total cross section of 5 and 20% of the primary combustion chamber cross section.
- the secondary combustion chamber 9 like the primary combustion chamber 6, is cylindrical. In its scope and - in Direction of flow seen - the front part, the exhaust pipe 10 is connected tangentially. With several Exhaust pipes 10, the distances between them on the circumference of the secondary combustion chamber 9 are the same, as shown in FIG.
- the primary combustion chamber 9 is followed by the particle filter 7.
- This is a monolithic Ceramic filter of the usual type.
- baffle plate 13 Between the outlet opening 8 of the primary combustion chamber 6 and the particle filter 7 there is a circular one Baffle plate 13 provided, e.g. connected to the periphery of the secondary combustion chamber 9 via spokes 14 is the baffle plate 13, which is made of heat-resistant material such. B. ceramic, has a diameter of approx. 60% of the primary combustion chamber diameter and a distance to the opening 8 of approx. 150% of the primary combustion chamber diameter.
- the particle filter system works as follows:
- the exhaust gas of the diesel engine 1 enters the exhaust gas line 10 tangentially into the Secondary combustion chamber 9 and causes a swirl flow there.
- the exhaust gas temperature and the particle content between the different exhaust pipes 10 by the swirl flow in the secondary combustion chamber 9 balanced. This homogenization of the exhaust gas flow leads to a uniform one Loading and thus for optimal use of the particle filter.
- the exhaust gas back pressure of the diesel engine 1 increases. If the exhaust back pressure a certain Has reached height, the burner 3 is switched on automatically during normal operation of the diesel engine 1, to regenerate the particle filter 7.
- the air swirl atomizer nozzle 5 receives fuel via the fuel line 18 and via the gas line 4 air.
- the fuel is from a source not shown, e.g. B. the fuel delivery pump of the diesel engine 1 delivered under relatively low pressure. Its quantity depends on the current load or exhaust gas temperature and speed of the diesel engine 1.
- the air which is also relatively low pressure, is either powered by a diesel engine Displacement fan 15 or from a pressure vessel 20 via a solenoid valve 21 and a supercritical one Nozzle 19 conveyed to the air swirl atomizer nozzle.
- the solution with the pressure container 20 is suitable for vehicles with compressed air brakes and accordingly dimensioned air compressor.
- This structurally simple solution delivers even with a not quite constant Container pressure a largely constant air pressure in front of the air swirl nozzle 5.
- the pressure that the displacement blower 15 delivers is dependent on the speed of the diesel engine 1 dependent, with a relief valve 11 is provided for pressure limitation.
- the amount of air supplied to the air swirl atomizer nozzle 5 and thus also the amount for conveying and heating it The energy required is relatively low since the residual oxygen in the particle filter system 1 according to the invention of the diesel engine exhaust gas is used for the regeneration of the particle filter 7.
- the residual oxygen content in the exhaust gas of a diesel engine is between approx. 7% at full load and approx. 18% in Neutral.
- the 7% residual oxygen content at full load is just enough to adequately regenerate Time to realize, provided that the exhaust gas temperature reaches the regeneration temperature at this load point.
- the nominal speed for reasons of consumption and emissions chosen relatively low which also keeps the maximum exhaust gas temperature relatively low here must also be at the full load point of the nominal speed, the point of the lowest power requirement of the burner 3, these work to reach the regeneration temperature. Since only the required at this operating point If there is a minimum amount of oxygen in the exhaust gas, no oxygen may be extracted from the exhaust gas. That is why in this operating point, the fuel-air mixture of the burner 3 is approximately stoichiometric. In this way the regeneration temperature with the lowest possible additional air volume and without use of the residual oxygen content of the exhaust gas is reached.
- the compressed air supplied forms a swirl flow, which is on a cutting edge leads to a fine atomization of the fuel.
- the fuel-air mixture emerges with swirl from the air swirl atomizer nozzle 5 into the primary combustion chamber 6 and is ignited there with the help of a high-voltage ignition device, not shown.
- the freshly blown mixture hits this torus vortex and becomes intensive through multiple recirculation processed.
- the stationary torus swirl also acts as a flame holder, creating a stable flame in the primary combustion chamber 6 is guaranteed.
- the stability of the flame also depends on pressure fluctuations in the primary combustion chamber 6, which vary from Exhaust gas flow from the diesel engine 1 originate. These pressure fluctuations are through the openings 12 on The extent of the primary combustion chamber 6 largely weakened. In the area of the openings 12, the ejector effect of the air swirl atomizing nozzle 5 in the primary combustion chamber 6 is a negative pressure, through which the pulsating exhaust gas from the secondary combustion chamber 9 enters the primary combustion chamber 6. Because the exhaust pressure fluctuations are also effective at the opening 8 of the primary combustion chamber 6, they stand out in their Effect on the flame in the primary combustion chamber 6 largely.
- the baffle plate 13 in front of the opening 8 of the primary combustion chamber 6 prevents it from not igniting the primary combustion chamber 6 reaches unburned fuel on the particle filter 7 and this after Ignition at risk from overheating. Since the baffle plate 13 is in the hot exhaust gas stream, it is hot itself and acts as a surface carburetor for the fuel until the fuel-air mixture is ignited. Because of its small size, based on the diameter of the secondary combustion chamber 9, affects the Uniformity of the flow in the secondary combustion chamber 9 is not.
- the combustion of a partially substoichiometric mixture in the primary combustion chamber 6 leads to a particle-free partial combustion due to the intensive mixture preparation, with strong formation of CO, H 2 and radicals.
- These gases combine in the secondary combustion chamber 9 with a part of the residual oxygen of the exhaust gas, the mixing of the exhaust gas with the reaction gas emerging from the primary combustion chamber 6 taking place according to the invention by the opposite direction of rotation of the swirl in the primary and secondary combustion chamber in the manner of a shear current mixture.
- This intensive mixing process causes the secondary combustion chamber 9 and thus also the end face of the particle filter 7 are evenly exposed to flames. Starting from individual ignition germs a uniform and gentle erosion of the particle coating of the particle filter 7 is therefore achieved.
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- 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)
- Filtering Of Dispersed Particles In Gases (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Claims (11)
- Système de filtre de particules comprenant un filtre (7) de particules sur le courant d'une conduite (10) de gaz d'échappement d'un moteur Diesel (1) et un brûleur (3), le brûleur (3) présentant une buse de pulvérisation (5) recevant un gaz contenant de l'oxygène par une conduite de gaz (4) raccordée à une chambre (6) de combustion primaire avec un écoulement tournant primaire et à une chambre (9) de combustion secondaire, le sens de l'écoulement tournant de la chambre (9) de combustion secondaire étant opposé au sens de l'écoulement tournant dans la chambre (6) de combustion primaire,
caractérisé en ce quele filtre de particules (7) est traversé exclusivement par le courant principal de la conduite de gaz d'échappement (10) du moteur Diesel (1),la buse de pulvérisation est une buse de pulvérisation (5) à giration d'air dont la sortie générant l'écoulement tournant débouche dans la chambre de combustion primaire (6) de manière à ce que la buse (5) crée un tourbillon torique dans la chambre primaire (6),la chambre primaire (6) est disposée à l'intérieur de la partie avant dans le sens de l'écoulement de la chambre de combustion secondaire (9),la conduite de gaz d'échappement (10) se raccorde tangentiellement à la périphérie de la chambre (9) de combustion secondaire pour créer un écoulement tournant,la conduite de gaz d'échappement (10) débouche dans la partie antérieure, dans le sens d'écoulement, de la chambre (9) de combustion secondaire. - Système de filtre de particules selon la revendication 1,
caractérisé en ce que
lorsqu'il y a plusieurs conduites de gaz d'échappement (10), leurs débouchés dans la chambre (9) de combustion secondaire, sont à des intervalles identiques. - Système de filtre de particules selon l'une des revendications précédentes,
caractérisé en ce qu'
à la périphérie de la chambre (6) de combustion primaire, se trouvent des orifices (12). - Système de filtre de particules selon la revendication 3,
caractérisé en ce que
les orifices (12), vus dans le sens d'écoulement, sont dans le premier tiers de la chambre (6) de combustion primaire et leur section représente 5 à 20 % de la section de la chambre (6) de combustion primaire. - Système de filtre de particules selon l'une des revendications précédentes,
caractérisé en ce qu'
une plaque d'impact (13) se trouve coaxialement à l'orifice de sortie (8) de la chambre (6) primaire de combustion en avant du filtre de particules (7). - Système de filtre de particules selon la revendication 5,
caractérisé en ce que
la plaque d'impact (13) est, de préférence, circulaire et que son diamètre représente environ 60 % et sa distance à l'extrémité de la chambre primaire, environ 150 % du diamètre de la chambre (6) de combustion primaire. - Système de filtre de particules selon l'une des revendications 5 ou 6,
caractérisé en ce que
la plaque d'impact (13) est en matériau réfractaire. - Système de filtre de particules selon l'une des revendications précédentes,
caractérisé en ce que
la conduite de gaz (4) est connectée au côté de pression d'un compresseur (15) entraíné par le moteur à combustion interne (1). - Système de filtre de particules selon la revendication 8,
caractérisé en ce qu'
une soupape (11) de décharge équipe la conduite (4) de gaz. - Système de filtre de particules selon l'une des revendications 1 à 7,
caractérisé en ce que
la conduite de gaz (4) est reliée à un réservoir (20) sous pression constante ou presque constante, par l'intermédiaire d'une électrovanne (18) et d'un étranglement d'écoulement (19) constitué de préférence par une buse surcritique. - Système de filtre de particules selon l'une des revendications 1 à 7,
caractérisé en ce que
la conduite (4) de gaz est reliée à la conduite de gaz d'échappement (10) par une électrovanne (16) et une vanne à papillon (17) se trouve dans la conduite de gaz d'échappement (10) en aval.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89120374T ATE79921T1 (de) | 1988-11-04 | 1989-11-03 | Partikelfiltersystem. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3837472 | 1988-11-04 | ||
DE3837472A DE3837472C2 (de) | 1988-11-04 | 1988-11-04 | Partikelfiltersystem |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0367280A1 EP0367280A1 (fr) | 1990-05-09 |
EP0367280B1 EP0367280B1 (fr) | 1992-08-26 |
EP0367280B2 true EP0367280B2 (fr) | 1998-04-08 |
Family
ID=6366498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89120374A Expired - Lifetime EP0367280B2 (fr) | 1988-11-04 | 1989-11-03 | Système de filtre de particules |
Country Status (5)
Country | Link |
---|---|
US (1) | US5094075A (fr) |
EP (1) | EP0367280B2 (fr) |
AT (1) | ATE79921T1 (fr) |
CA (1) | CA2002331A1 (fr) |
DE (2) | DE3837472C2 (fr) |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4015013B4 (de) * | 1990-05-10 | 2004-09-16 | Deutz Ag | Mischvorrichtung |
DE4034313A1 (de) * | 1990-10-29 | 1992-04-30 | Kloeckner Humboldt Deutz Ag | Vorrichtung zum mischen von fluiden |
DE4120702A1 (de) * | 1991-06-22 | 1992-12-24 | Man Technologie Gmbh | Brenner fuer die regenerierung von partikelfiltern |
US5228891A (en) * | 1992-01-07 | 1993-07-20 | Pall Corporation | Regenerable diesel exhaust filter |
US5457945A (en) * | 1992-01-07 | 1995-10-17 | Pall Corporation | Regenerable diesel exhaust filter and heater |
US5470364A (en) * | 1992-01-07 | 1995-11-28 | Pall Corporation | Regenerable diesel exhaust filter |
DE4239079A1 (de) * | 1992-11-20 | 1994-05-26 | Pierburg Gmbh | Brennersystem zur Abgasentgiftung bzw. -reinigung einer Brennkraftmaschine |
DE4242521A1 (de) * | 1992-12-16 | 1994-06-23 | Bayerische Motoren Werke Ag | Abgaskatalysator einer Brennkraftmaschine mit einem vorgeschalteten Brenner |
DE4303720C2 (de) * | 1993-02-09 | 2003-12-24 | Deutz Ag | Partikelfiltersystem |
US5655212A (en) * | 1993-03-12 | 1997-08-05 | Micropyretics Heaters International, Inc. | Porous membranes |
US5766458A (en) * | 1993-03-12 | 1998-06-16 | Micropyretics Heaters International, Inc. | Modulated and regenerative ceramic filter with insitu heating element |
US5558760A (en) * | 1994-12-12 | 1996-09-24 | Micropyretics Heaters International, Inc. | Filter/heating body produced by a method of spraying a shape |
DE4440716C2 (de) * | 1994-11-15 | 1997-02-27 | Daimler Benz Ag | Rußfilteranlage für Verbrennungsmotor |
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-
1988
- 1988-11-04 DE DE3837472A patent/DE3837472C2/de not_active Expired - Fee Related
-
1989
- 1989-10-30 US US07/429,019 patent/US5094075A/en not_active Expired - Fee Related
- 1989-11-03 EP EP89120374A patent/EP0367280B2/fr not_active Expired - Lifetime
- 1989-11-03 DE DE8989120374T patent/DE58902147D1/de not_active Expired - Lifetime
- 1989-11-03 AT AT89120374T patent/ATE79921T1/de not_active IP Right Cessation
- 1989-11-06 CA CA002002331A patent/CA2002331A1/fr not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0367280A1 (fr) | 1990-05-09 |
EP0367280B1 (fr) | 1992-08-26 |
DE3837472C2 (de) | 1998-09-24 |
CA2002331A1 (fr) | 1990-05-04 |
ATE79921T1 (de) | 1992-09-15 |
US5094075A (en) | 1992-03-10 |
DE3837472A1 (de) | 1990-05-10 |
DE58902147D1 (de) | 1992-10-01 |
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