• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY The invention relates to an evaporator (12) for an internal combustion engine, which evaporator (12) comprises a housing (20) with a substantially circular-cylindrical outer surface (22), a first duct (24) and a second duct (26), at least one inlet (28). ) to direct an exhaust flow into the housing (20) and at least one outlet (30) for directing the exhaust flow out of the housing (20). The muffler also includes a selective catalytic reduction (SCR) purification system comprising an SCR substrate (32), a fork tube (34) and an arrangement (36) for adding a reducing agent to the exhaust stream to reduce NOx levels in the exhaust stream. Furthermore, the muffler comprises a cylindrical particulate filter (40) which is arranged between a first space (38) and a first duct (39), the exhaust gases being led in a substantially radial direction through the filter (40). The exhaust stream is also arranged to pass through a second channel (44) on the outside of the fork pipe (34) in front of the SCR substrate to heat the fork pipe (34). The muffler has a compact construction and is river optimized, whereby the formation of urea crystals can also be reduced.
    公开号:SE1350007A1
    申请号:SE1350007
    申请日:2013-01-04
    公开日:2014-07-05
    发明作者:Ola Sandström；Micael Baudin；Esa Rosvall
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    TECHNICAL FIELD The present invention relates to an evaporator for an internal combustion engine as well as an exhaust system comprising the evaporator and a method for exhaust gas purification of an evaporator.
    BACKGROUND OF THE INVENTION AND KNOWLEDGE TECHNOLOGY Diesel-powered engines are equipped with exhaust gas purification devices in order to reduce particulate emissions and harmful gases present in the exhaust gases of the diesel engine. In order to regulate emissions from vehicles, there are various standards and legal requirements that regulate levels for permitted exhaust emissions. Consequently, vehicles are equipped with various exhaust gas purification devices to meet legal requirements.
    Silencers are used in internal combustion engines to vaporize engine noise and reduce emissions, and the silencer is usually placed in the exhaust system of the internal combustion engine. The sound can be vaporized by arranging one or more filters in a housing through which the sound waves pass, and / or by reducing the speed of the exhaust gases in the muffler, which is achieved, for example, by changing the flow direction of the exhaust gases in the muffler. This reduced the speed of the exhaust gases and sound waves.
    Internal combustion engines that include a muffler can be included in several different applications, for example in heavy vehicles, such as trucks or buses.
    The vehicle can alternatively be a car. Also motor boats, ships, ferries or ships, industrial engines and / or motor-driven industrial robots, power plants, 2 such as e.g. an electric power plant that includes a diesel generator, locomotive or other application may include an internal combustion engine with muffler.
    Particulate emissions from these internal combustion engines, especially diesel-powered heavy vehicles, can be reduced with the help of particulate filters. A particulate filter comprises a body of porous material. The porous material can, for example, consist of a mineral-based material such as cordierite or ceramic or sintered material. With such filter materials it is possible to obtain a very high degree of filtration of particles from an exhaust stream, usually in excess of 99%.
    Furthermore, it is possible to use a so-called SCR system (SCR = Selective Catalytic Reduction, selective catalytic reduction) which comprises a reducing agent and a catalyst with an SCR substrate for purifying exhaust gases -Iran nitrogen dioxide (NOx). In order to reduce the nitrogen dioxide content and also to be able to convert the nitrogen dioxides into less harmful gases, the exhaust gases are treated with a reducing agent, which can be, for example, a mixture of 32.5% urea and water. When the liquid is injected and mixed with the exhaust gases, a chemical reaction takes place whereby nitrogen gas and water are formed over the SCR catalyst.
    Urea discharge can be supplied by means of an injection system which extends into the exhaust line. The injection system comprises one or more outlet openings through which the urea discharge is injected into the exhaust line. During large debris of an operating condition of a diesel engine, the exhaust gases have a sufficiently high temperature to evaporate the urea solution so that ammonia is formed. However, it is black to avoid that part of the supplied urea discharge comes into contact with and gets stuck on the inner rock surface of the exhaust line in a non-evaporated state. The exhaust line, which is often in contact with and cooled by ambient air, has a lower temperature than the exhaust gases inside the exhaust line. When an internal combustion engine is operated in a uniform manner for a period of time, the dosing will be constant, which means that the urea discharge essentially hits the same area of the exhaust line during the entire period of time. This means that the injected urea solution contributes to the cooling of the cradle of the exhaust line locally in some areas, which further aggravates the situation. Thus, the temperature can be lowered locally in this area to a lower temperature of 100 ° C so that a film of urea release is formed which is entrained by the exhaust gas flow. After a certain distance, the water in the urea solution will boil away. What remains is solid urea which is slowly gasified by the heat. If the supply of solid urea is greater than the evaporation, a accumulation of urea takes place in the exhaust line. Urea can be subdivided into a number of different products that can react further with themselves and with new feed urea from the exhaust gases.
    The result is primitive polymers on the urea base which form coatings on the inside of the exhaust line. Sklana coatings, ie. urea lumps or urea crystals, can eventually block an exhaust line and, large the exhaust flow by a High back pressure rise in the exhaust system.
    There is a great need for a high degree of exhaust purification in internal combustion engines. There is also a great need for a compact design for exhaust gas cleaning devices since the space in which the engine is placed is often limited. For example, the space p6 of a vehicle chassis is very limited. To partially solve these problems, it is advisable to design the vehicle's muffler so that it also includes a built-in or extended cleaning equipment. Patent applications with document numbers US20080066451 and US20020046555 show examples of sklane silencers. A problem with these solutions, however, is that they are not sufficiently compact.
    Thus, there is a need to improve existing mufflers to reduce or eliminate the above mentioned disadvantages.
    SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact design for a muffler comprising an SCR purification system and a particulate filter.
    It is a further object of the invention to obtain a high degree of purification of [Ade particles and NOR.
    It is a further object of the invention to reduce the problem of the formation of urea crystals in the SCR purification system.
    The above objects are achieved with a muffler according to the invention. The evaporator can initially be defined as comprising a housing with a substantially circular-cylindrical jacket surface, a first duct and a second duct, at least one inlet for directing an exhaust surface into the housing and at least one outlet for directing the exhaust gas flow out. The muffler also includes a selective catalytic reduction (SCR) purification system, which includes an SCR substrate, a fork tube and an arrangement for adding a reducing agent to the exhaust stream to reduce NOR levels in the exhaust stream.
    The muffler can be characterized in that it further comprises a first cylindrical space adjacent to the inlet, a particulate filter adjacent to the first space and a first cylindrical channel adjacent to the particulate filter. The exhaust gases are arranged to flow from the first space through the particle filter in a substantially radial direction towards the center line of the muffler to the first cylindrical channel. The exhaust gases in the first cylindrical duct are arranged to flow in a first direction towards the first piece of the housing. The first cylindrical channel surrounds the SCR substrate and the fork tube is located substantially concentrically with the SCR substrate. The SCR substrate surrounds the evaporator tube and the fork tube is connected to the first channel via a passage. The exhaust gases in the fork pipe are arranged to flow in a second direction, which is opposite to the first direction, towards the second piece of the housing. A second channel is arranged between the evaporator tube and the SCR substrate, the exhaust gases flowing through the second channel on the outside of the evaporator tube to the SCR substrate. The exhaust gases in the second channel are arranged to flow in the first direction. In this way, the exhaust stream can heat the evaporator tube and the temperature of the evaporator tube can be kept at a stable level and thereby the formation of urea lumps can be reduced. Furthermore, the outlet is located or arranged adjacent to the SCR substrate and the exhaust gases flow out of the muffler via the outlet when they have passed the SCR substrate.
    The above objects are also achieved with a process for exhaust gas purification of a muffler as above. The method comprises the steps of directing the exhaust gases from the inlet into a first cylindrical space and directing the exhaust gases -in the first space through a particulate filter in a substantially radial direction towards the center line of the muffler to a first cylindrical channel. The exhaust gases are led in the first channel in a first direction towards the first piece of the housing. Thereafter, the exhaust gases Than lead the first channel to the evaporator tube via a passageway which includes an arrangement for adding a reducing agent. The capture pipe is connected to the first channel via a passage. The exhaust gases in the evaporator tube are then led in a second direction, which is opposite to the first direction, towards the second part of the housing. The exhaust gases are then led from the evaporator tube to a second channel on the outside of the evaporator tube, in which the exhaust gases flow in the first direction. From the second channel, the exhaust gases are then led to an SCR substrate, through which the exhaust gases are passed in the other direction. Finally, the exhaust gases are led out of the casing via the outlet.
    The invention also relates to an exhaust system for an internal combustion engine which comprises a muffler according to the invention. The exhaust system can be included, for example, in a motor vehicle that can be a truck, bus or car. Additional objects, advantages and features of the present invention will become apparent from the following detailed description.
    BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a schematic side view of a vehicle with a muffler.
    Figure 2 shows a schematic perspective view of a cross section of a silencer according to an embodiment of the invention. Figure 3 schematically shows a side view of the section of the silencer in Figure 2 and the exhaust flow has been damaged by means of arrows.
    DETAILED DESCRIPTION OF THE INVENTION Internal combustion engines can be used in several types of applications and vehicles today, for example in heavy vehicles, such as trucks or buses, passenger cars, motor boats, ships, ferries or ships. Internal combustion engines are also used in industrial engines and / or motor-driven industrial robots, power plants, shoes e.g. electric power plants that include a diesel generator, and in locomotives. The muffler according to the present invention is intended for an internal combustion engine and can be preferably used in a vehicle, such as in a truck or bus.
    Figure 1 shows a vehicle 1 in a schematic side view, which vehicle 1 is provided with an internal combustion engine 2, which drives the drive wheels 4 of the vehicle 1 via a gearbox 6 and a propeller shaft 8. The internal combustion engine 2 is provided with an exhaust system 10 in which a muffler 12 is arranged. The internal combustion engine 2 is driven by a fuel engine 14, which is fed to the internal combustion engine 2 with a fuel system 16 comprising a fuel tank 18. Figure 2 shows a schematic perspective view of a muffler 12 according to an embodiment of the present invention. The muffler 12 comprises a housing 20 with a substantially circular-cylindrical jacket surface 22, a first head piece 24 and a second duct 26. The muffler also comprises at least one inlet 28 for directing an exhaust gas flow into the housing 20. The inlet is arranged at the second duct 26. In order to leading the exhaust gas flow out of the casing, an outlet 30 is provided at the second head piece 26.
    The muffler 12 comprises an SCR system comprising a catalyst with an SCR substrate 32. A fork pipe 34 and an arrangement 36 for adding a reducing agent to the exhaust gas to reduce NOx levels are provided at the first head piece 24 in a passage 42. The exhaust gases are arranged to flow via this passage 42 which comprises the arrangement 36 for adding the reducing agent. The reducing agent may be, for example, a mixture of water and urea, for example a product with the product name AdBlue®, and the SCR substrate may comprise a vanadium or non-noble metal catalyst, which decomposes NO to aqueous kga and nitrogen.
    The muffler 12 comprises a first cylindrical space 38 adjacent the inlet 28. A particulate filter 40 is arranged adjacent the first space 38. As shown in Figure 2, the filter 40 is located in the space 38 and the filter 40 forms a boundary between the space 38 and a first cylindrical channel 39. The first cylindrical channel 39 is arranged in connection with the particle filter 40 in radial direction towards the center line of the housing. Center line is a tank line extending axially between the centers of the cylindrical muffler body pieces as shown by a solid line dotted line in Figure 3.
    Figure 3 shows the exhaust gas flow in more detail. The exhaust gases are arranged to flow from the first space 38 through a cylindrical particle filter 40 in a substantially radial direction towards the center line of the evaporator to the first cylindrical channel 39. The exhaust gases in the first channel 39 are then arranged to flow in a first direction 100 towards the first part 24 of the housing. in that the spirit of the first channel 39 towards the second breath piece 26 is closed and in that a passage 42 is arranged in connection with the spirit of the first channel 39 towards the first breath piece 24. To obtain a compact construction, the first cylindrical channel 39 surrounds the SCR substrate 32.
    It is important to avoid leakage of unfiltered exhaust gases Than the space 38 to the duct 39 and therefore the filter should be mounted in a leak-proof manner. The particle filter 40 can be mounted by means of mounting elements, for example rails 46, as shown in Figures 2 and 3. The rails are attached to the inside of the first breath piece 24 and the second breath piece 26. The particle filter 40 is mounted concentrically with the evaporator tube 34. The particle filter is preferably circular-cylindrical and surrounds the entire circumference. Alternatively, the particulate filter could be positioned so that it only covers the upper half of the circumference of the muffler since the main part of the exhaust stream passes the owe part of the filter. By arranging the particle filter 40 between the first space 38 and the second channel 39 in a leak-proof manner and concentric with the evaporator tube, the number of particles coming out of the muffler can be substantially reduced and a filtration degree of at least 99% is achieved while maintaining a very compact design.
    To achieve optimal evaporation and construction, the evaporator tube 34 is placed substantially concentrically with the SCR substrate 32 so that the SCR substrate 32 surrounds the evaporator tube 34. The evaporator tube 34 is connected to the first channel 39 via a passage 42, as shown in Figure 3. 3 it is further shown that the exhaust gases in the evaporator tube 34 are arranged to flow in a second direction 200, which is opposite to the first direction 100, towards the second end piece 26 of the muffler.
    According to the present invention, a second channel 44 is arranged between the evaporation tube 34 and the SCR substrate 32, the exhaust gases flowing through the second channel 44 to the SCR substrate 32. The exhaust gases in the second channel 9 44 are arranged to flow in the first direction 100. Della is provided by that the evaporator tube 34 is closed at its end lying in the direction of the second end piece 26 and when the exhaust stream has passed the evaporator tube 34 in the second direction 200, the river is forced to change direction to the first direction 100 and flow into the second channel 44. The exhaust stream is still hot and can heat the evaporator tube on the outside of the evaporator tube 34. The second channel 44 is also closed in its spirit in the direction of the first piece of gas 24 and the exhaust gases are therefore forced to change direction once more. The exhaust gases are then led to the SCR substrate 32. The exhaust gases flow through the SCR substrate 32 in the other direction 200 and are finally led out through the outlet. By arranging the flow of the exhaust gases in the manner described above, a set back pressure through the muffler 12 can be obtained. The number of irrigations of the exhaust stream is minimized and the irrigations are pressure drop optimized. You can, for example, optimize the pressure drop by changing the curvature of the irrigations.
    Low back pressure in the exhaust system results in better engine performance, reduces fuel consumption and thus harmful exhaust fumes from engines can be reduced.
    Due to the construction of the muffler, the exhaust gases can be led symmetrically into the evaporation chamber. After the evaporating chamber, the exhaust gases are led into the second channel 44 on the outside of the evaporating tube 34, the evaporating tube 34 being heated by the exhaust gases. In this way, the evaporation can also be improved because the evaporation tube 34 is heated by the exhaust gases and then the risk of building up urea crystals decreases.
    The particulate filter 40 is preferably a fiber filter which may, for example, comprise or consist of silica fibers. The soot particles stick to the surface of the fibers or are caught by the fibers. The fiber filter can be regenerated by burning the soot particles and this can be done spontaneously or controlled.
    In order to enable the combustion of soot particles at relatively low temperatures, for example between about 200-300 ° C, the fibers can be coated with a catalytic material. The catalytic material may be a noble metal such as platinum, rhodium or palladium. The catalytic material is preferably platinum. The coating can be done with the aid of any suitable technology that is lifted, for example by impregnation, or by spray coating the fibers.
    The silica fibers themselves have a high melting point, about 1700 ° C, and are therefore suitable for use in a particulate filter in an internal combustion engine, where the exhaust gas temperature in the subsequent exhaust system can amount to about 1200 ° C. The silica fibers are also resistant to temperature shocks and many chemicals. i.a. strong acids. Of back pressure shells, handling shells and neck shell shells, the silica fibers preferably have an average diameter of at least 5 μm, for example 5-20 μm.
    The silica fibers are preferably of pure silica. An example of fibrous material of this type is supplied by the company Saint Gobain Quartz, for example under a brand name Quartzel® Wool.
    Silica fibers are often supplied as a fibrous mat in which the silica fibers are randomly tangled and form a seam and soot particles, which may have a sticky surface, can thereby both adhere to the surface of the silica fibers and become trapped in the formed fiber net. The filter can be manufactured by compressing or packing the fiber mat so that a desired amount of fibers is obtained for a certain volume. The gasket can be made mechanically, for example with a molding press. To provide stability and stability to the filter, it can be surrounded or encapsulated in a metal mesh.
    The fiber filter with silica fibers is preferably dimensioned so that a filtration degree of Over 99% is reached. As a result, no additional particle filters are needed in the exhaust system necessarily.
    According to the present invention, the fiber filter preferably has a porosity of between 95-99%. The porosity describes how much air the filter can contain.
    The raw material for the silica fibers can have a density of about 2200 kg / m3. The fiber filter can be dimensioned so that it preferably has a surface velocity, Face Velocity FV, of less than or equal to 1 m / s. With the help of FV it is possible to describe at what speed the exhaust stream passes the surface of the filter. FV is defined using the following formula: FV = Qm./A 1 m / s; vani Qm. = maxi ground exhaust flow in the exhaust system m3 / s; and A = the surface area m2 of the filter, through which the exhaust gas flow passes. Furthermore, the ratio fiber mass / maximum exhaust gas flow in the fiber filter should preferably be: Mf / Qmax 1500g / 1 m3 / s; vani mf = fiber mass The maximum porosity of the fiber filter is preferably less than or equal to 99.3%.
    The space in the muffler is often limited and therefore it should be possible to mount all components in the muffler in a space-saving way. The thickness of the fiber filter can be between about 15-60 mm and preferably the thickness is between about 25-50 mm. The total area and volume are limited by the dimensions of the muffler.
    An example of the dimensions of a fiber filter according to the invention may be as follows. A muffler has a limited space for a particle filter. The filter can have a thickness of up to 25mm. The maximum exhaust flow from the internal combustion engine is 3600m3 / h (= 1m3 / s). Using the formula for FV, it can be deduced that the area of the filter must be larger or equal to 1 m2. 12 The volume of the filter is therefore 0.025 m3. With the help of the ratio mf / Qm „1500g / 1 m3 / s, it can be deduced that the fiber mass must be at least 1.5 kg. The density of the silica used as a raw material for the silica fibers is 2200 kg / m3. Thus, it can be deduced that the porosity is 97.3%.
    The present muffler and method of exhaust purification of a muffler have several advantages in relation to conventional muffler. The design of the muffler is more compact and less space-consuming than the design of conventional mufflers. Since the back pressure generated in the present muffler is lower than with conventional mufflers, the fuel consumption can also be lower. At the same time, a high degree of purification of [Ade particles and NOR is obtained.
    The foregoing description of the preferred embodiments of the present invention has been provided for the purpose of illustrating and describing the invention. The described embodiments are not intended to be exhaustive or to limit the invention, but the invention is limited by the scope of the appended claims. 13
    权利要求:
    Claims (9)
    [1]
    An evaporator (12) for an internal combustion engine, said evaporator (12) comprising a housing (20) having a substantially circular-cylindrical jacket surface (22), a first duct (24) and a second duct (26), at least one inlet (28) for conducting an exhaust stream into the housing (20) and at least one outlet (30) for directing the exhaust surface out of the housing (20), a selective catalytic reduction (SCR) purification system comprising an SCR substrate (32), an evaporation tube (34) and an arrangement (36) for adding a reducing agent to the exhaust stream to reduce NON levels in the exhaust stream, characterized in that the muffler (12) comprises a first cylindrical space (38) adjacent the inlet (28), a particulate filter (40) adjacent the first space (38) and a first cylindrical channel (39) adjacent the particulate filter (40), the exhaust gases being arranged to flow from the first space (38) through the particulate filter (40) in a substantially radial direction. against sound dam the center line of the pair to the first cylindrical channel (39), in which channel (39) the exhaust gases are arranged to flow in a first direction (100) towards the first end piece (24) of the housing; the first cylindrical channel (39) surrounds the SCR substrate (32); the evaporator tube (34) is located substantially concentrically with the SCR substrate (32) and the SCR substrate (32) surrounds the evaporator tube (34), the evaporator tube (34) being connected to the first channel (39) via a passage (42) and the exhaust gases. in the evaporator tube (34) are arranged to flow in a second direction (200), which is opposite to the first direction (100), against the second piece (26) of the housing (20); a second channel (44) is arranged between the evaporating tube (34) and the SCR substrate (32), the exhaust gases flowing through the second channel (44) on the outside of the evaporating tube (34) to the SCR substrate (32) and the exhaust gases in the second the channel (44) is arranged to flow in the first direction (100); the outlet (30) is arranged adjacent to the SCR substrate (32), the exhaust gases being arranged to flow out of the muffler (12) via the outlet (30) when the exhaust gases have passed the SCR substrate (32).
    [2]
    A steamer (12) according to claim 1, characterized in that the particle filter (40) is a fiber filter comprising silica fibers.
    [3]
    A steamer (12) according to claim 2, characterized in that the silica fibers have an average diameter p6 of 5-20 μm.
    [4]
    A steamer (12) according to any one of claims 2-3, characterized in that the fiber filter is dimensioned so that the fiber filter's 1. FV = Qmax / A 1 m / s; vani Qm. = maximum exhaust flock in the exhaust system m3 / s; and A = the surface area (m2) of the filter, through which the exhaust gas flow passes 2. the ratio fiber mass / maximum exhaust flow in the filter filter is: mf / Q. 500g / 1 m3 / s; vani Mf = fiber berm assa - the maximum porosity of the fiber filter is less than or equal to 99.3%.
    [5]
    A steamer (12) according to any one of the preceding claims 2-4, characterized in that the porosity of the fiber filter is 95-99%.
    [6]
    An evaporator (12) according to any one of the preceding claims 2-5, characterized in that the fibers in the fiber filter are coated with catalytic material.
    [7]
    A steamer (12) according to any one of the preceding claims, characterized in that the thickness of the particle filter is from 25 to 50 mm.
    [8]
    An exhaust system (10) for an internal combustion engine (2), characterized in that the exhaust system (10) comprises a muffler (12) according to any one of claims 1-7.
    [9]
    A method of exhaust gas purification of an evaporator (12) of an internal combustion engine, the evaporator (12) comprising a substantially circular-cylindrical housing (20) having a first duct (24) and a second duct (26) and at least one inlet (30) for directing exhaust gases into the housing (20) and at least one outlet (30) for directing the exhaust gases out of the housing (20), a selective catalytic reduction (SCR) purification system comprising an SCR substrate (32), an evaporating tube ( 34) and an arrangement (36) for adding a reducing agent to the exhaust stream to reduce NOx levels in the exhaust stream, the method comprising the steps of: directing the exhaust gases from the inlet (28) into a first cylindrical space (38); passing the exhaust gases from the first space (38) through a particulate filter (40) in a substantially radial direction towards the center line of the muffler to a first cylindrical channel (39); directing the exhaust gases in the first channel (39) in a first direction (100) towards the first piece (24) of the housing; directing the exhaust gases from the first channel (39) to the evaporator tube (34) via a passage (42) comprising an arrangement (36) for adding a reducing agent, the evaporator tube (34) being connected to the first channel (39) via a passage (42); directing the exhaust gases in the evaporator tube (34) in a second direction (200), opposite to the first direction (100), towards the second piece (26) of the housing (20); directing the exhaust gases from the evaporator tube (34) to a second channel (44) on the outside of the evaporator tube (34), in which the exhaust gases flow in the first direction (100); directing the exhaust gases from the second channel (44) to an SCR substrate (32) through which the exhaust gases are conducted in the second direction (200); lead the exhaust gases out of the housing (20) via the outlet (30). .cr
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6471918B1|2000-08-03|2002-10-29|Starfire Systems, Inc.|Filter, regeneration and soot-removing systems and applications|
    DE10250050A1|2002-10-25|2004-05-06|Purem Abgassysteme Gmbh & Co. Kg|Exhaust aftertreatment system, especially for a diesel engine|
    DE102007062662A1|2007-12-24|2009-06-25|J. Eberspächer GmbH & Co. KG|Sliding seat and exhaust treatment device|
    US8302389B2|2009-11-23|2012-11-06|International Engine Intellectual Property Company, Llc|Urea SCR diesel aftertreatment system|US9616383B2|2014-02-06|2017-04-11|Johnson Matthey CatalystsGmbh|Compact selective catalytic reduction system for nitrogen oxide reduction in the oxygen-rich exhaust of 500 to 4500 kW internal combustion engines|
    CN104832260A|2015-05-25|2015-08-12|浙江中马园林机器股份有限公司|Chain saw two-stroke gasoline engine silencer with double catalytic agent carriers|
    DE102016215290B4|2016-08-16|2018-10-04|Continental Automotive Gmbh|Component of an exhaust system and exhaust aftertreatment process|
    WO2018149509A1|2017-02-20|2018-08-23|Volvo Penta Corporation|A mixer box, a use thereof and a method for mixing|
    CN107165704A|2017-07-27|2017-09-15|天纳克（苏州）排放系统有限公司|Engine exhaust post-processes mixing arrangement and its after-treatment device and application|
    DE102017124032A1|2017-10-16|2019-04-18|Eberspächer Exhaust Technology GmbH & Co. KG|Gas / reagent mixing assembly|
    CN109162790B|2018-07-02|2021-08-20|上海诺骋工程机械排气系统有限公司|Compact type tail gas post-treatment system|
    法律状态:
    2021-08-31| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350007A|SE538185C2|2013-01-04|2013-01-04|Muffler for an internal combustion engine|SE1350007A| SE538185C2|2013-01-04|2013-01-04|Muffler for an internal combustion engine|
    PCT/SE2013/051529| WO2014107129A1|2013-01-04|2013-12-17|Silencer including a particle filter, a vaporisation pipe and a scr-catalyst|
    EP13824415.7A| EP2941552B1|2013-01-04|2013-12-17|Silencer including a particle filter, a vaporisation pipe and a scr-catalyst|
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