WO2008034941A1 - Exhaust gas flow regulator - Google Patents

Exhaust gas flow regulator Download PDF

Info

Publication number
WO2008034941A1
WO2008034941A1 PCT/FI2007/000235 FI2007000235W WO2008034941A1 WO 2008034941 A1 WO2008034941 A1 WO 2008034941A1 FI 2007000235 W FI2007000235 W FI 2007000235W WO 2008034941 A1 WO2008034941 A1 WO 2008034941A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas flow
exhaust gas
exhaust
flow regulator
pipeline
Prior art date
Application number
PCT/FI2007/000235
Other languages
French (fr)
Inventor
Keijo Torkkell
Erkki NÄRHI
Pekka Matilainen
Juha-Matti ÅSENBRYGG
Ari Lievonen
Toni Kinnunen
Original Assignee
Ecocat Oy
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 Ecocat Oy filed Critical Ecocat Oy
Priority to EP07823096A priority Critical patent/EP2074293A4/en
Priority to RU2009113238/06A priority patent/RU2481479C2/en
Priority to US12/442,281 priority patent/US20100024404A1/en
Publication of WO2008034941A1 publication Critical patent/WO2008034941A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • 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
    • F01N13/011—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 having two or more purifying devices arranged in parallel
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
    • 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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • F01N3/2814—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates all sheets, plates or foils being corrugated
    • 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
    • F01N2240/20—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 flow director or deflector
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
    • F01N2510/0682—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice versa
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49398—Muffler, manifold or exhaust pipe making

Definitions

  • the invention relates to an exhaust gas flow regulator installed in an exhaust pipeline and to an exhaust pipeline with such a regulator installed therein.
  • the invention also relates to the manufacture and use of the exhaust gas flow regulator and the exhaust pipeline having said regulator.
  • a catalytic exhaust gas flow regulator has now been invented, which regulates the exhaust gas flow extremely efficiently in the exhaust pipeline.
  • the invention is characterized by the features specified in the independent claims. Some of the preferable embodiments of the invention are set forth in the other claims.
  • An exhaust gas flow regulator is a regulator to be installed in the exhaust pipeline, covering essentially the cross-section of the entire installation site.
  • the regulator comprises catalytic corrugated metal plates with the corrugation direction of their folds being in an angle towards the average exhaust gas flow direction, for regulating the exhaust gas flow.
  • Preferable said gas flow regulator comprises catalytic corrugated metal plates placed cross-wise to each other.
  • the regulator can additionally comprise flat plates. The structure of corrugated and flat plates can vary.
  • Said gas flow regulator can be installed in an exhaust manifold part of the pipeline. It can be before turbo or after turbo. Installation place depends on functional and structural conditions of pipeline. It also depends on quantitative and qualitative properties of exhaust gas.
  • the exhaust manifold flow regulator according to the invention also provides the advantage that the catalyst can be located as close as possible to the motor. In this case its catalytic startup/ignition is extremely quick.
  • the exhaust gas regulator is advantageous in use because the pressure loss generated by it is relatively low in the exhaust pipeline. This is due to the fact that a catalytic regulator functions simultaneously both as an exhaust gas flow regulator and catalyst.
  • the design of the regulator is particularly simple and durable, because it is composed of one structural entity and can be efficiently connected to the casing of the exhaust pipeline and/or integrated as a part thereof.
  • the corrugation channel direction of the regulator plates relative to the average exhaust gas flow direction is 5-90 degrees, such as 10-30 degrees.
  • the inlet angle to be selected can vary. It depends on the desired degree of efficiency of the lateral mixture. It is possible to optimize the mixture or to minimize the pressure losses.
  • the inlet angle can be according to the average exhaust gas flow direction. In certain embodiments the inlet angle relative to the average inlet gas flow direction can be for example 15- 25 degrees.
  • This kind of regulator produces efficient internal mixing of the exhaust gas flow while the flow resistance of the gas flow is relatively low at the same time.
  • the regulator according to the invention functions simultaneously as a catalyst, in which case the total flow resistance is preferably especially low.
  • An exhaust gas flow regulator according to the invention can also be realized in such a way that the installation angle changes compared in the flow direction.
  • a catalytic exhaust gas flow regulator whose installation angle changes compared in the flow direction from 0 to 90 degrees, e.g. from 25 degrees to 20 degrees.
  • Structural solutions can thus be utilized for optimizing the pressure loss and/or the flow equalization.
  • said exhaust gas flow regulator is said gas flow regulator is a gas flow equalizer.
  • the equalizer is preferable in use because the pressure loss generated by it is relatively low in the exhaust pipeline. This is due to the fact that a catalytic regulator functions simultaneously both as an exhaust gas flow equalizer and catalyst.
  • said exhaust gas flow regulator is a gas flow controller or an exhaust pipeline element.
  • the using space of pipeline gives the benefit to reach earlier light off and better emission performance, and it the regulator also equalize the flow so than cc-catalyst velocity distribution is better.
  • Said exhaust gas flow regulator also minimizes the hot spot -effect by regulating gas flow in pipeline.
  • the exhaust gas flow regulator has zones, whose catalytic coating and/or hole number differ from the other zones.
  • the zone aspect can be implemented in one, two or three directions.
  • CPSI cell density hole number
  • the same can also be realized in the cross direction relative to the inlet channels.
  • the zone aspect can also be realized relative to the density of the coating, in which case a higher content of catalyzing agents is integrated to points with a higher load, such as at the inlet channel holes or the regulator upper surface, for example in a situation, in which the exhaust gas flow direction is turned from the horizontal direction to below the car.
  • the zone aspect can preferably also be realized in such a way that different zones have different catalyzing agents. This arrangement allows extremely versatile possibilities for adjusting the operation of the catalytic regulator.
  • the exhaust pipeline has a mixing chamber, whose casing is at least a part of the exhaust pipeline casing.
  • the manufacture of such a mixing chamber is preferable as it can be manufactured in connection with the exhaust pipeline manufacture.
  • the mixing chamber can preferably be located between the inlet channels, which allows partly mixing together the exhaust gas flows coming from different inlet tubes/channels. This arrangement enables a reliable use of a lambda sensor, for example, for the adjustment of combustion.
  • the mixing chamber makes the equalization of the exhaust gas flow generally more efficient.
  • the exhaust pipeline additionally has one or more catalysts connected thereto, which have been installed in the mixing chamber after the exhaust gas flow regulator relative to the gas flow direction.
  • one or more catalysts connected thereto which have been installed in the mixing chamber after the exhaust gas flow regulator relative to the gas flow direction.
  • an exhaust pipeline which has catalytic exhaust gas flow regulators in the inlet pipes and a separate catalyst in the connecting part.
  • This separate catalyst can be different from or similar to the exhaust gas flow regulators as for the design.
  • the exhaust pipeline additionally has one or more additional regulators connected thereto.
  • the separate regulator is preferably a grid, foil, wire mesh, mesh or rough metal wool, for example.
  • the separate additional regulator can be located before or after the actual regulator.
  • the regulator according to the invention suits well to various applications. It can be used in motors using various fuels and in applications of various sizes. . It can be in motors having or not having turbo. It can be used in all combustion engines and where the space is limitation, like pipeline, cylinder port and so on
  • Figure 1 is a sectional view of a gas flow equalizer.
  • Figure 2 is a sectional view of another a gas flow equalizer.
  • FIGS 3 and 4 illustrate exhaust gas flow retention distributions in the exhaust manifolds.
  • FIGS 5 and 6 illustrate exhaust gas flow speed distributions in the exhaust manifolds.
  • Figure 7 shows the exhaust gas flow zones in the exhaust manifold.
  • Figure 8 and 9 are sectional views of gas flow controllers.
  • Figure 10 and 11 are sectional views of regulator elements.
  • Figure 1 shows an exhaust manifold flow equalizer 2 installed to the connecting part 7 of an exhaust manifold in pipeline 1.
  • the exhaust gas flow equalizer comprises 2 catalytic corrugated metal plates 2f placed cross-wise to each other (shown as examples) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas G, for equalizing the exhaust gas flow at least in the lateral direction.
  • the exhaust manifold has an exhaust gas flow mixing chamber 4, whose casing 4c is a part of the casing 1c of the manifold 1.
  • Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
  • Figure 2 shows an exhaust manifold 1 , having exhaust manifold flow equalizers 2, 6 installed to the connecting part 7 and to the inlet channels 3.
  • the exhaust gas flow equalizer 2 comprises catalytic corrugated metal plates 2f placed cross-wise to each other (shown as examples) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas G, for equalizing the exhaust gas flow at least in the lateral direction.
  • the corrugation direction of the folds is in a varying angle relative to the average gas flow G direction such that at the center of the exhaust manifold the angle is lower than at the edges.
  • the exhaust manifold has an exhaust gas flow mixing chamber 4, whose casing 4c is a part of the casing 1c of the manifold 1.
  • Exhaust gas G flows in the exhaust manifold 1 in the inlet channels 3 through the exhaust manifold flow equalizers 6 partly to the mixing chamber 4 and to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
  • Figures 3 and 4 illustrate the exhaust gas flow retention distribution in two different exhaust manifolds 1.
  • the exhaust gas flow equalizer 2 is installed at the center of the connecting part 7 while in Figure 4 it is installed in the bottom part of the connecting part 1C.
  • Figures 5 and 6 illustrate the exhaust gas flow speed distribution in two different exhaust manifolds 1.
  • the exhaust gas flow equalizer 2 is installed at the center of the connecting part 7 while in Figure 6 it is installed in the bottom part of the connecting part 1C.
  • Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
  • Figures 3-6 illustrate well that the exhaust gas flow equalizer 2 has equalized the exhaust gas flow variations mixing together the gases coming from both inlet channels 3.
  • Figure 7 shows an exhaust gas flow equalizer 1 according to Figures 3 and 5 installed at the center of the connecting part 7 having different zones 2A, 2C for equalizing the load of the exhaust gas G.
  • Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
  • Zones 2A have a lower exhaust gas flow speed than zones 2C and correspondingly, the substrate content created for zones 2A is lower than for 2C. This arrangement allows effective optimization of the operation of the catalytic equalizer 2.
  • Figure 8 and 9 shows of a gas flow controller 12 installed in an exhaust pipeline 1.
  • the exhaust gas flow controller 12 comprises catalytic corrugated metal plates 2f (shown as examples) with the corrugation direction of their folds being at least partially in an angle towards the average flow direction of the exhaust gas G.
  • Figure 10 and 11 shows a regulator element 22 connected to exhaust pipeline 1.
  • the exhaust gas flow controller 12 comprises catalytic corrugated metal plates 2f (shown as examples) with the corrugation direction of their folds being at least partially in an angle towards the average flow direction of the exhaust gas G.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention relates to an exhaust gas flow regulator installed in an exhaust pipeline and to an exhaust pipeline with such an regulator installed therein. The invention also relates to the manufacture and use of the exhaust gas flow regulator and the exhaust pipeline. The exhaust gas flow regulator (2, 12, 22) according to the invention comprises catalytic corrugated metal plates (2f) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas (G) for regulating the exhaust gas flow at least in the lateral direction.

Description

Exhaust gas flow regulator
Technical background
The invention relates to an exhaust gas flow regulator installed in an exhaust pipeline and to an exhaust pipeline with such a regulator installed therein. The invention also relates to the manufacture and use of the exhaust gas flow regulator and the exhaust pipeline having said regulator.
A frequent problem in the exhaust gas treatment is that the exhaust gas flow is uneven in the exhaust piping. This causes problems in both the exhaust gas purification and the measurement of exhaust gas properties, and through this in the motor adjustment. Consequently, the modelling of the equipment operation also becomes difficult. Attempts have been made to resolve the problem by constructing separate equalizing equipment, which can have been connected in front of the catalyst, for example. Separate devices additionally cause increased counter pressure in the piping, which for its part reduces the motor power. This has proportionately special importance particularly in low power motors.
General description of invention
A catalytic exhaust gas flow regulator has now been invented, which regulates the exhaust gas flow extremely efficiently in the exhaust pipeline.
To achieve this object, the invention is characterized by the features specified in the independent claims. Some of the preferable embodiments of the invention are set forth in the other claims.
An exhaust gas flow regulator according to the . invention is a regulator to be installed in the exhaust pipeline, covering essentially the cross-section of the entire installation site. The regulator comprises catalytic corrugated metal plates with the corrugation direction of their folds being in an angle towards the average exhaust gas flow direction, for regulating the exhaust gas flow. Preferable said gas flow regulator comprises catalytic corrugated metal plates placed cross-wise to each other. The regulator can additionally comprise flat plates. The structure of corrugated and flat plates can vary.
Said gas flow regulator can be installed in an exhaust manifold part of the pipeline. It can be before turbo or after turbo. Installation place depends on functional and structural conditions of pipeline. It also depends on quantitative and qualitative properties of exhaust gas.
It is now possible with same pressure drop to have better purification results and with smaller pressure drop it now possible to have equal purification results compared to separate exhaust pipeline and catalyst. The exhaust manifold flow regulator according to the invention also provides the advantage that the catalyst can be located as close as possible to the motor. In this case its catalytic startup/ignition is extremely quick.
The exhaust gas regulator is advantageous in use because the pressure loss generated by it is relatively low in the exhaust pipeline. This is due to the fact that a catalytic regulator functions simultaneously both as an exhaust gas flow regulator and catalyst.
In addition, the design of the regulator is particularly simple and durable, because it is composed of one structural entity and can be efficiently connected to the casing of the exhaust pipeline and/or integrated as a part thereof.
According to one embodiment of the invention, the corrugation channel direction of the regulator plates relative to the average exhaust gas flow direction is 5-90 degrees, such as 10-30 degrees. The inlet angle to be selected can vary. It depends on the desired degree of efficiency of the lateral mixture. It is possible to optimize the mixture or to minimize the pressure losses. The inlet angle can be according to the average exhaust gas flow direction. In certain embodiments the inlet angle relative to the average inlet gas flow direction can be for example 15- 25 degrees. This kind of regulator produces efficient internal mixing of the exhaust gas flow while the flow resistance of the gas flow is relatively low at the same time. Furthermore, it should be noted that the regulator according to the invention functions simultaneously as a catalyst, in which case the total flow resistance is preferably especially low.
An exhaust gas flow regulator according to the invention can also be realized in such a way that the installation angle changes compared in the flow direction. For example, it is possible to manufacture a catalytic exhaust gas flow regulator whose installation angle changes compared in the flow direction from 0 to 90 degrees, e.g. from 25 degrees to 20 degrees. Structural solutions can thus be utilized for optimizing the pressure loss and/or the flow equalization. According to one embodiment of the invention, said exhaust gas flow regulator is said gas flow regulator is a gas flow equalizer. The equalizer is preferable in use because the pressure loss generated by it is relatively low in the exhaust pipeline. This is due to the fact that a catalytic regulator functions simultaneously both as an exhaust gas flow equalizer and catalyst.
According to one embodiment of the invention, said exhaust gas flow regulator is a gas flow controller or an exhaust pipeline element. The using space of pipeline gives the benefit to reach earlier light off and better emission performance, and it the regulator also equalize the flow so than cc-catalyst velocity distribution is better. Said exhaust gas flow regulator also minimizes the hot spot -effect by regulating gas flow in pipeline.
According to one embodiment of the invention, the exhaust gas flow regulator has zones, whose catalytic coating and/or hole number differ from the other zones. The zone aspect can be implemented in one, two or three directions. For example, it is possible to preferably manufacture an exhaust gas flow regulator in which the cell density hole number (CPSI) is higher at the inlet channel, and correspondingly, the hole number between the inlet channels is lower, this arrangement thus allowing to further improve the equalization of the exhaust gas flow. The same can also be realized in the cross direction relative to the inlet channels.
The zone aspect can also be realized relative to the density of the coating, in which case a higher content of catalyzing agents is integrated to points with a higher load, such as at the inlet channel holes or the regulator upper surface, for example in a situation, in which the exhaust gas flow direction is turned from the horizontal direction to below the car. The zone aspect can preferably also be realized in such a way that different zones have different catalyzing agents. This arrangement allows extremely versatile possibilities for adjusting the operation of the catalytic regulator.
According to one embodiment of the invention, the exhaust pipeline has a mixing chamber, whose casing is at least a part of the exhaust pipeline casing. The manufacture of such a mixing chamber is preferable as it can be manufactured in connection with the exhaust pipeline manufacture. The mixing chamber can preferably be located between the inlet channels, which allows partly mixing together the exhaust gas flows coming from different inlet tubes/channels. This arrangement enables a reliable use of a lambda sensor, for example, for the adjustment of combustion. In addition, the mixing chamber makes the equalization of the exhaust gas flow generally more efficient.
According to one embodiment of the invention, the exhaust pipeline additionally has one or more catalysts connected thereto, which have been installed in the mixing chamber after the exhaust gas flow regulator relative to the gas flow direction. For example, it is possible to manufacture an exhaust pipeline, which has catalytic exhaust gas flow regulators in the inlet pipes and a separate catalyst in the connecting part. This separate catalyst can be different from or similar to the exhaust gas flow regulators as for the design.
According to one embodiment of the invention, the exhaust pipeline additionally has one or more additional regulators connected thereto. In certain embodiments it may be necessary to adjust the exhaust gas flow particularly evenly. The separate regulator is preferably a grid, foil, wire mesh, mesh or rough metal wool, for example. The separate additional regulator can be located before or after the actual regulator.
The regulator according to the invention suits well to various applications. It can be used in motors using various fuels and in applications of various sizes. . It can be in motors having or not having turbo. It can be used in all combustion engines and where the space is limitation, like pipeline, cylinder port and so on
Detailed description of invention
Some of the embodiments of the invention are described below in detail by making reference to the enclosed drawings.
Figure 1 is a sectional view of a gas flow equalizer.
Figure 2 is a sectional view of another a gas flow equalizer.
Figures 3 and 4 illustrate exhaust gas flow retention distributions in the exhaust manifolds.
Figures 5 and 6 illustrate exhaust gas flow speed distributions in the exhaust manifolds.
Figure 7 shows the exhaust gas flow zones in the exhaust manifold.
Figure 8 and 9 are sectional views of gas flow controllers. Figure 10 and 11 are sectional views of regulator elements.
Figure 1 shows an exhaust manifold flow equalizer 2 installed to the connecting part 7 of an exhaust manifold in pipeline 1. The exhaust gas flow equalizer comprises 2 catalytic corrugated metal plates 2f placed cross-wise to each other (shown as examples) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas G, for equalizing the exhaust gas flow at least in the lateral direction. The exhaust manifold has an exhaust gas flow mixing chamber 4, whose casing 4c is a part of the casing 1c of the manifold 1. Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
Figure 2 shows an exhaust manifold 1 , having exhaust manifold flow equalizers 2, 6 installed to the connecting part 7 and to the inlet channels 3. The exhaust gas flow equalizer 2 comprises catalytic corrugated metal plates 2f placed cross-wise to each other (shown as examples) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas G, for equalizing the exhaust gas flow at least in the lateral direction. The corrugation direction of the folds is in a varying angle relative to the average gas flow G direction such that at the center of the exhaust manifold the angle is lower than at the edges. The exhaust manifold has an exhaust gas flow mixing chamber 4, whose casing 4c is a part of the casing 1c of the manifold 1. Exhaust gas G flows in the exhaust manifold 1 in the inlet channels 3 through the exhaust manifold flow equalizers 6 partly to the mixing chamber 4 and to the exhaust gas flow equalizer 2 and further to the outlet channel 5.
Figures 3 and 4 illustrate the exhaust gas flow retention distribution in two different exhaust manifolds 1. In Figure 3 the exhaust gas flow equalizer 2 is installed at the center of the connecting part 7 while in Figure 4 it is installed in the bottom part of the connecting part 1C. Figures 5 and 6 illustrate the exhaust gas flow speed distribution in two different exhaust manifolds 1. In Figure 5 the exhaust gas flow equalizer 2 is installed at the center of the connecting part 7 while in Figure 6 it is installed in the bottom part of the connecting part 1C. Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5. Figures 3-6 illustrate well that the exhaust gas flow equalizer 2 has equalized the exhaust gas flow variations mixing together the gases coming from both inlet channels 3. Figure 7 shows an exhaust gas flow equalizer 1 according to Figures 3 and 5 installed at the center of the connecting part 7 having different zones 2A, 2C for equalizing the load of the exhaust gas G. Exhaust gas G flows in the exhaust manifold 1 from the inlet channels 3 partly through the mixing chamber 4 to the exhaust gas flow equalizer 2 and further to the outlet channel 5. Zones 2A have a lower exhaust gas flow speed than zones 2C and correspondingly, the substrate content created for zones 2A is lower than for 2C. This arrangement allows effective optimization of the operation of the catalytic equalizer 2.
Figure 8 and 9 shows of a gas flow controller 12 installed in an exhaust pipeline 1. The exhaust gas flow controller 12 comprises catalytic corrugated metal plates 2f (shown as examples) with the corrugation direction of their folds being at least partially in an angle towards the average flow direction of the exhaust gas G.
Figure 10 and 11 shows a regulator element 22 connected to exhaust pipeline 1. The exhaust gas flow controller 12 comprises catalytic corrugated metal plates 2f (shown as examples) with the corrugation direction of their folds being at least partially in an angle towards the average flow direction of the exhaust gas G.

Claims

Claims
1. An exhaust gas flow regulator to be installed in an exhaust pipeline, characterized in that the exhaust gas flow regulator (2, 12, 22) comprises catalytic corrugated metal plates (2f) with the corrugation direction of their folds being at least partially in an angle towards the average flow direction of the exhaust gas (G), for regulating the exhaust gas flow.
2. An exhaust gas flow regulator according to claim 1 , characterized in that the corrugation channel direction of the folds of the corrugated metal plates (2f) is in an angle of 5-90 degrees relative to the average exhaust gas (G) flow direction.
3. An exhaust gas flow regulator according to claim 1 or 2, characterized in that said gas flow regulator (2, 12, 22) is installed in an exhaust manifold part of the pipeline (1 ).
4. An exhaust gas flow regulator according to any of the preceding claims, characterized in that said gas flow regulator is a gas flow equalizer (2).
5. An exhaust gas flow regulator according to any of the preceding claims, characterized in that said gas flow regulator is a gas flow controller (12).
6. An exhaust gas flow regulator according to any of the preceding claims, characterized in that gas flow regulator is a regulator element (22).
7. An exhaust gas flow regulator according to any of the preceding claims, characterized in that said gas flow regulator (2, 12, 22) comprises catalytic corrugated metal plates (2f) placed cross-wise to each other.
8. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust gas flow regulator (2, 12, 22) has zones (2A, 2C) whose catalytic coating differs from each other.
9. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust gas flow regulator (2, 12, 22) has zones (2A, 2C) whose hole number differs from each other.
10. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the corrugation direction of the folds of the corrugated plates (2f) in said gas flow regulator (2, 12, 22) changes in the flow direction (G), such as from 25 degrees to 20 degrees.
11. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust pipeline (1 ) has one or more exhaust gas flow mixing chambers (4).
12. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust pipeline (1 ) has one or more exhaust gas flow mixing chambers (4), whose casing (4c) is at least a part of the casing (1c) of the exhaust pipeline (1 ).
13. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust pipeline (1 ) has additionally one or more separate catalysts connected thereto.
14. An exhaust gas flow regulator according to any of the preceding claims, characterized in that the exhaust pipeline (1 ) has additionally one or more separate exhaust gas flow regulators connected thereto.
15. Motor exhaust pipeline, characterized in that it comprises one or more exhaust gas flow regulators (2, 12, 22) according to claims 1-10.
16. An exhaust pipeline according to claim 15, characterized in that one or more exhaust gas flow regulators (2, 12, 22) according to claims 1-10 are installed in the inlet chamber/chambers (3).
17. An exhaust pipeline according to claim 15 and 16, characterized in that one or more exhaust gas flow regulators (2, 12, 22) according to claims 1-10 are installed in the connecting part (7).
18. An exhaust pipeline according to claims 15-17, characterized in that one or more exhaust gas flow regulators (2, 12, 22) according to claims 1-10 are installed in the outlet channel (5).
19. An exhaust pipeline according to claims 15-17, characterized in that a lambda sensor is connected to the exhaust pipeline (1 ).
20. A method for manufacturing an exhaust gas flow regulator to be installed in an exhaust pipeline, characterized in that catalytic corrugated metal plates (2f) with the corrugation direction of their folds being in an angle towards the average flow direction of the exhaust gas, are installed in an exhaust pipeline (1) for manufacturing an exhaust gas flow regulator (2, 12, 22) is manufactured by , for equalizing the exhaust gas flow in an exhaust pipeline.
21. A method for manufacturing an exhaust pipeline, characterized in that one or more exhaust gas flow regulator (2, 12, 22) according to claims 1-14 are connected to the exhaust pipeline.
22. The use of the exhaust gas flow regulator according to claims 1-14, characterized in that the exhaust gas flow regulator (2, 12, 22) is used in motors using fuels.
23. The use of the exhaust pipeline according to claims 15-19, characterized in that the exhaust pipeline (1) is used in motors using fuels.
PCT/FI2007/000235 2006-09-20 2007-09-20 Exhaust gas flow regulator WO2008034941A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07823096A EP2074293A4 (en) 2006-09-20 2007-09-20 Exhaust gas flow regulator
RU2009113238/06A RU2481479C2 (en) 2006-09-20 2007-09-20 Exhaust manifold
US12/442,281 US20100024404A1 (en) 2006-09-20 2007-09-20 Exhaust gas flow regulator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FIPCT/FI2006/000305 2006-09-20
PCT/FI2006/000305 WO2008034933A1 (en) 2006-09-20 2006-09-20 Exhaust gas flow equalizer

Publications (1)

Publication Number Publication Date
WO2008034941A1 true WO2008034941A1 (en) 2008-03-27

Family

ID=39200212

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/FI2006/000305 WO2008034933A1 (en) 2006-09-20 2006-09-20 Exhaust gas flow equalizer
PCT/FI2007/000235 WO2008034941A1 (en) 2006-09-20 2007-09-20 Exhaust gas flow regulator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/FI2006/000305 WO2008034933A1 (en) 2006-09-20 2006-09-20 Exhaust gas flow equalizer

Country Status (5)

Country Link
US (2) US20100024405A1 (en)
EP (2) EP2069618A4 (en)
CN (2) CN101553650A (en)
RU (2) RU2442901C2 (en)
WO (2) WO2008034933A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150047329A1 (en) * 2008-11-13 2015-02-19 Donaldson Company, Inc. Injector mounting configuration for an exhaust treatment system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8677738B2 (en) * 2011-09-08 2014-03-25 Tenneco Automotive Operating Company Inc. Pre-injection exhaust flow modifier
US9528425B2 (en) * 2014-11-26 2016-12-27 Hyundai Motor Company Exhaust system structure for improving noise problem
US10947882B2 (en) * 2019-05-02 2021-03-16 Hyundai Motor Company Vehicle exhaust system
DE102021107463A1 (en) * 2021-03-25 2022-09-29 Purem GmbH Exhaust/Reactant Mixing Assembly
EP4245972A1 (en) 2022-03-18 2023-09-20 Winterthur Gas & Diesel Ltd. Exhaust gas after treatment device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031401A (en) 1971-07-08 1991-07-16 Hinderks M V Means for treatment of the exhaust gases of combustion
US5651946A (en) * 1993-08-05 1997-07-29 Sulzer Chemtech Ag Exhaust gas catalytic converter, particularly for motor cars
DE10235691A1 (en) * 2002-07-31 2004-02-19 Volkswagen Ag Device for the catalytic treatment of gaseous media

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953176A (en) * 1973-05-22 1976-04-27 Texas Instruments Incorporated Catalytic converter
SU529968A1 (en) * 1973-07-26 1976-09-30 Предприятие П/Я Р-6397 Gas engine gas pipeline
DE3733402A1 (en) * 1987-10-02 1989-04-13 Emitec Emissionstechnologie CATALYST ARRANGEMENT WITH FLOW GUIDE
JP3096302B2 (en) * 1989-12-11 2000-10-10 ゲブリユーダー ズルツアー アクチエンゲゼルシヤフト Heterogeneous reaction type reactor and reactor catalyst
RU2028469C1 (en) * 1990-01-08 1995-02-09 Уральский электрохимический комбинат Catalytic unit for exhaust neutralizer and method of making same
US5220789A (en) * 1991-03-05 1993-06-22 Ford Motor Company Integral unitary manifold-muffler-catalyst device
RU2008449C1 (en) * 1991-04-05 1994-02-28 Алтайский политехнический институт им.И.И.Ползунова Exhaust gas catalytic converter for internal combustion engine
DE4138851A1 (en) * 1991-11-26 1993-05-27 Scheidling Martina Catalyst for e.g. IC engine gaseous emissions purificn. - comprises catalysts on carriers coated on foils which form smooth, corrugated grooved or offset channels
DE4241469A1 (en) * 1992-12-09 1994-06-16 Emitec Emissionstechnologie Catalytic converter with two or more honeycomb bodies in a tubular casing and process for its production
US20010026838A1 (en) * 1996-06-21 2001-10-04 Engelhard Corporation Monolithic catalysts and related process for manufacture
US5857328A (en) * 1997-11-24 1999-01-12 General Motors Corporation Exhaust manifold catalytic converter
RU2131519C1 (en) * 1997-07-14 1999-06-10 Акционерное общество "АвтоВАЗ" Power unit exhaust system
US5857326A (en) * 1997-11-24 1999-01-12 General Motors Corporation Exhaust poison trap
DE10040907A1 (en) * 1999-08-21 2001-04-26 H U T Heuwieser Umwelttechnik Exhaust gas purification device for IC engine having turbocharger has devices for oxidizing exhaust gases exiting engine and fed to turbine of turbocharger
US6713025B1 (en) * 1999-09-15 2004-03-30 Daimlerchrysler Corporation Light-off and close coupled catalyst
JP3855266B2 (en) * 2001-11-01 2006-12-06 日産自動車株式会社 Exhaust gas purification catalyst

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031401A (en) 1971-07-08 1991-07-16 Hinderks M V Means for treatment of the exhaust gases of combustion
US5651946A (en) * 1993-08-05 1997-07-29 Sulzer Chemtech Ag Exhaust gas catalytic converter, particularly for motor cars
DE10235691A1 (en) * 2002-07-31 2004-02-19 Volkswagen Ag Device for the catalytic treatment of gaseous media

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2074293A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150047329A1 (en) * 2008-11-13 2015-02-19 Donaldson Company, Inc. Injector mounting configuration for an exhaust treatment system
US9453447B2 (en) * 2008-11-13 2016-09-27 Donaldson Company, Inc. Injector mounting configuration for an exhaust treatment system

Also Published As

Publication number Publication date
EP2074293A4 (en) 2010-12-08
RU2009113241A (en) 2010-10-27
US20100024404A1 (en) 2010-02-04
US20100024405A1 (en) 2010-02-04
WO2008034933A1 (en) 2008-03-27
RU2009113238A (en) 2010-10-27
EP2074293A1 (en) 2009-07-01
CN101553650A (en) 2009-10-07
EP2069618A1 (en) 2009-06-17
RU2442901C2 (en) 2012-02-20
RU2481479C2 (en) 2013-05-10
EP2069618A4 (en) 2010-12-01
CN101563530A (en) 2009-10-21

Similar Documents

Publication Publication Date Title
US20100024404A1 (en) Exhaust gas flow regulator
EP2320142B1 (en) Flue gas denitration device
EP1111212A2 (en) Exhaust gas purification system for lean burn engine
US10415446B2 (en) Exhaust purifying filter
KR101283813B1 (en) Exhaust-gas power-recovery turbine, waste heat recovery system, and method for operating a waste heat recovery system
CN102203393A (en) Catalytic converter apparatus
US7472774B1 (en) Versatile engine muffling system
US10450912B2 (en) Exhaust silencer
EP2961975A1 (en) Air intake system for internal combustion engine
KR20130133053A (en) Exhaust emission control device for a water vehicle and method for operating an exhaust emission control device
US6764527B2 (en) Honeycomb structure constituted by main and sub honeycomb structures
AU2013293025B2 (en) Apparatus and method for engine backpressure reduction
US20090071135A1 (en) Reverse flow heat exchanger for exhaust systems
CN1950594A (en) Catalyst carrier body for a catalytic converter to be used close to the motor
WO2010029897A1 (en) Exhaust cleaner for diesel engine
KR100925928B1 (en) Variable complex muffler typed exhaust system in vehicle
US20080093163A1 (en) Silencer and Open-Structured Catalyser
US7858052B2 (en) Catalytic converter optimization
WO2023057191A1 (en) A combustion turbine and heat recovery system combination with scr reactor assembly, and methods of assembling and using the same
JP2010284599A (en) Honeycomb support for exhaust gas purification catalyst
CN218509577U (en) Engine exhaust pipe assembly, engine and vehicle
US11156145B2 (en) Emissions module with adjustable sizing
TW202348940A (en) Heat exchanger unit and method for fluid to passively bypassing a heat exchanger
Ramadan et al. Characterization of a catalytic converter internal flow
Stankiewicz et al. Properties and Performance of UltraCat™ Open-Cell Silicon Carbide Foam Catalyst Substrates

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780035061.X

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07823096

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1585/CHENP/2009

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007823096

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2009113238

Country of ref document: RU

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 12442281

Country of ref document: US