Exhaust gas treatment system of internal combustion engine

Abstract

The invention relates to an internal combustion engine exhaust gas treatment system, which relates to the technical field of engine exhaust gas treatment, and comprises an exhaust pipeline, a gas inlet plate, a gas collecting pipe and a catalyst ejector, the air inlet plate is located in the exhaust pipeline, a plurality of air inlets are formed in the air inlet plate in the pipe length direction of the exhaust pipeline in a penetrating mode, and the air inlet plate divides the exhaust pipeline into a first area and a second area; the gas collecting pipe is installed in a first area of the exhaust pipeline, a first gas inlet space is formed between the outer wall of the gas collecting pipe and an inner cavity of the exhaust pipeline, the gas collecting pipe is parallel to the pipe length direction of the exhaust pipeline, and the gas collecting pipe is located at the upper position in the exhaust pipeline and provided with a first gas inlet valve and a first exhaust valve. One end of the catalyst injector communicates with the second area of the exhaust channel so as to inject a catalyst into the second area. The invention has the effect of providing a novel structure to adapt to an input source with relatively strong volatility.

Description

Technical Field

[0001] This application relates to the technical field of engine exhaust gas treatment, and particularly to a system for treating the exhaust gas of an internal combustion engine. Background Art

[0002] Engine exhaust gas treatment technology is an indispensable part of the modern automotive industry. With the increasingly strict environmental protection regulations and the growing public concern about air quality, how to effectively reduce engine exhaust emissions has become a research hotspot worldwide. Currently, various advanced exhaust gas purification devices and technologies have emerged continuously. They remove harmful substances through physical adsorption, chemical catalysis, etc., improving the energy utilization efficiency while reducing environmental pollution and making important contributions to the sustainable development of society.

[0003] Under the related technology, in practical applications, in order to meet the exhaust gas emission requirements under different working conditions, the existing technology usually adopts various methods to optimize the exhaust gas flow. For example, some solutions install filters or baffles in the exhaust pipe to intercept particulate matter; there are also cases that attempt to improve the intake method, such as improving the gas distribution uniformity by adding perforated panels, so as to promote more complete subsequent reactions.

[0004] However, for the above-mentioned related technology, the above conventional practices generally face a problem, that is, when a large amount of gas surges in instantaneously, it is difficult to adjust the amount of gas entering the reaction zone, which may lead to incomplete reactions in local areas. Especially for those key links that rely on precise control conditions to function, it ultimately limits the emission reduction efficiency of the overall system. Therefore, it is urgent to develop a new structure to adapt to the input source with strong volatility, so as to overcome the deficiencies of the existing system. Summary of the Invention

[0005] In order to develop a new structure to adapt to the input source with strong volatility, this application provides a system for treating the exhaust gas of an internal combustion engine.

[0006] The system for treating the exhaust gas of an internal combustion engine provided by this application adopts the following technical solutions: A system for treating the exhaust gas of an internal combustion engine includes an exhaust pipe, an intake plate, a gas collecting pipe, and a catalyst injector; The intake plate is located in the exhaust pipe. The intake plate is provided with a plurality of intake ports penetrating along the pipe length direction of the exhaust pipe. The intake plate divides the exhaust pipe into a first region and a second region; The collecting pipe is installed in the first area of the exhaust pipe, and there is a first intake space between the outer wall of the collecting pipe and the inner cavity of the exhaust pipe. The collecting pipe is parallel to the pipe length direction of the exhaust pipe, and the collecting pipe is located at the upper inner position of the exhaust pipe. A first intake valve and a first exhaust valve are provided on the collecting pipe. One end of the catalyst injector communicates with the second area of the exhaust passage to inject the catalyst into the second area. When the exhaust volume is greater than the set threshold, the first intake valve opens and the first exhaust valve closes. When the exhaust volume is less than the set threshold, the first intake valve closes.

[0007] By adopting the above technical solution, by setting the exhaust pipe and the intake plate, the gas discharged from the engine enters the first area from the intake port of the exhaust pipe, and the gas evenly enters the second area through the multiple intake holes on the intake plate. The catalyst injector injects the catalyst, and the catalyst reacts with the gas catalytically to achieve the purification of pollutants in the gas. If there is too much gas entering the second area, it may cause some gas to fail to react with the catalyst. Therefore, by setting the collecting pipe, a first intake valve and a first exhaust valve are provided on the collecting pipe. When the exhaust volume is greater than the set threshold, the first intake valve opens and the first exhaust valve closes. Part of the gas in the first area enters the collecting pipe for temporary storage, and the rest of the gas enters the second area through the intake holes to react with the catalyst. When the reaction between the gas and the catalyst in the second area is completed, the first exhaust valve is opened to discharge the gas in the collecting pipe into the second area, and the catalyst injector continues to release the catalyst, so as to realize the reaction of the remaining gas with the catalyst. When the exhaust volume is less than or equal to the set threshold, the first intake valve closes, and all the gas in the first area will enter the second area to react with the catalyst. By setting the collecting pipe, it is possible to temporarily store part of the gas when the exhaust volume is large, thereby improving the reaction efficiency of the gas and the catalyst to fully react.

[0008] Optionally, a flow sensor is provided in the first area of the exhaust pipe, and the flow sensor is electrically connected to the first intake valve.

[0009] By adopting the above technical solution, by setting the flow sensor to control the on-off of the first intake valve. When the flow sensor detects that the gas content in the first area is higher than the set threshold, the flow sensor transmits an electrical signal to the first intake valve, and the first intake valve opens, and part of the gas enters the collecting pipe for temporary storage.

[0010] Optionally, a flow dividing plate is further included. The flow dividing plate is connected to the inner side wall of the exhaust pipe, and the flow dividing plate is located in the first intake space. The flow dividing plate is inclined, one end of the flow dividing plate contacts the intake port of the collecting pipe, and the other end has a second intake space with the bottom wall of the exhaust pipe.

[0011] By adopting the above technical solution, when there is a large amount of gas in the first region, in order to introduce some gas into the gas collecting pipe, a flow dividing plate is provided. The flow dividing plate is inclined, and the flow dividing plate is used to divert some gas into the gas collecting pipe, and the remaining gas enters the second region after passing through the intake plate from the second intake space.

[0012] Optionally, the flow dividing plate is rotatably connected to the exhaust pipe, and the rotation axis of the flow dividing plate along the exhaust pipe is perpendicular to the pipe length direction of the exhaust pipe.

[0013] By adopting the above technical solution, when the gas content in the first region is lower than the set threshold, in order to enable the gas to enter the second region more smoothly, the flow dividing plate is rotatably connected to the exhaust pipe, so as to realize the gas flow direction at different gas amounts through the rotation of the flow dividing plate.

[0014] Optionally, if the exhaust gas volume is greater than the set threshold, the flow dividing plate rotates along the exhaust pipe to an inclined state; if the exhaust gas volume is less than the set threshold, the flow dividing plate rotates along the exhaust pipe to a horizontal state.

[0015] By adopting the above technical solution, when the gas content in the first region is higher than the set threshold, the flow dividing plate rotates to an inclined state to divert some gas to the gas collecting pipe by the flow dividing plate, and the remaining gas passes through the second intake space. When the gas content in the first region is lower than or equal to the set threshold, the flow dividing plate rotates to a horizontal state, so that the gas passes through above and below the flow dividing plate and enters the second region after passing through the intake holes.

[0016] Optionally, it further includes a driving component. The driving component includes a motor and a rotating shaft. The rotating shaft is perpendicular to the pipe length direction of the exhaust pipe. The rotating shaft is rotatably connected to the side wall of the exhaust pipe. The flow dividing plate is fixedly connected to the rotating shaft. The output shaft of the motor is coaxially and fixedly connected to the rotating shaft, and the housing of the motor is directly or indirectly fixedly connected to the outer side wall of the exhaust pipe.

[0017] By adopting the above technical solution, in order to drive the rotation of the flow dividing plate, a driving component is provided, and the motor drives the rotating shaft to rotate, and further drives the flow dividing plate to rotate.

[0018] Optionally, it further includes a cleaning component. The cleaning component includes a first cleaning rod. The first cleaning rod is arranged on the side of the intake plate close to the first region. One side of the first cleaning rod is in contact with the plate surface of the intake plate. The first cleaning rod is slidably connected to the intake plate. The sliding direction of the first cleaning rod along the intake plate is perpendicular to both the pipe length direction of the exhaust pipe and the length direction of the rotating shaft.

[0019] By adopting the above technical solution, when the gas discharged from the engine enters the first area, since the gas contains polluting soot particles, the soot particles will adhere to the intake plate, resulting in blockage of the intake holes. Therefore, by providing a first cleaning rod, the first cleaning rod is slidably connected to the intake plate to clean the soot particles on the surface of the intake plate.

[0020] Optionally, the first cleaning rod is parallel to the length direction of the rotating shaft.

[0021] By adopting the above technical solution, in order to increase the cleaning area of the first cleaning rod on the intake plate, the first cleaning rod is parallel to the length direction of the rotating shaft, so that the contact area between the first cleaning rod and the intake plate is as large as possible.

[0022] Optionally, the cleaning assembly further includes a connecting plate. When one end of the flow dividing plate approaches the gas collecting pipe, the plate length direction of the connecting plate is parallel to the pipe length direction of the exhaust pipe. One end of the connecting plate is fixedly connected to the flow dividing plate, and the other end is connected to the first cleaning rod.

[0023] By adopting the above technical solution, by providing a connecting plate, the connection between the flow dividing plate and the first cleaning rod is realized, and at the same time, the gas in the first area can also be diverted.

[0024] Optionally, the cleaning assembly further includes an elastic member. The telescopic direction of the elastic member is parallel to the pipe length direction of the exhaust pipe. The elastic member is fixedly connected between the connecting plate and the first cleaning rod.

[0025] By adopting the above technical solution, when the flow dividing plate rotates, in order to enable the first cleaning rod to always contact the intake plate, the cleaning assembly further includes an elastic member. Under the action of the elastic member, when the flow dividing plate rotates along the exhaust pipe, the first cleaning rod can always contact the intake plate to clean the soot particles on the intake plate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By providing a gas collecting pipe in the present application, when the exhaust volume is greater than the set threshold, part of the gas in the first area enters the gas collecting pipe for temporary storage, and the remaining gas enters the second area through the intake holes to react with the catalyst. When the reaction between the gas in the second area and the catalyst is completed, the first exhaust valve is opened to discharge the gas in the gas collecting pipe into the second area, and the catalyst injector continues to release the catalyst, so as to realize the reaction of the remaining gas with the catalyst. When the exhaust volume is less than or equal to the set threshold, the first intake valve is closed, and all the gas in the first area will enter the second area to react with the catalyst, thereby improving the reaction efficiency of the gas and the catalyst to fully react; 2. In this application, by setting a flow deflector, when the gas content in the first area is higher than the set threshold, the flow deflector rotates to an inclined state, so that part of the gas is diverted into the gas collecting pipe by the flow deflector, and the remaining gas passes through the second intake space. When the gas content in the first area is lower than or equal to the set threshold, the flow deflector rotates to a horizontal state, so that the gas passes through above and below the flow deflector and enters the second area after passing through the intake holes; 3. In this application, by setting a first cleaning rod, the rotation of the flow deflector drives the first cleaning rod to slide along the intake plate, so that the first cleaning rod cleans the soot particles on the surface of the intake plate. Description of the Drawings

[0027] Figure 1 is a schematic structural diagram of the exhaust pipe and the gas collecting pipe of this application; Figure 2 is a schematic structural diagram of the flow deflector and the exhaust pipe of this application; Figure 3 is a schematic structural diagram of the drive assembly of this application; Figure 4 is a schematic structural diagram of the cleaning assembly of this application; Figure 5 is this application Figure 4 an enlarged view of part A in.

[0028] Description of the reference numerals: 1. Exhaust pipe; 11. First area; 12. Second area; 13. Flow sensor; 2. Intake plate; 21. Intake port; 3. Catalyst injector; 4. Gas collecting pipe; 41. First intake space; 42. First intake valve; 43. First exhaust valve; 5. Flow deflector; 51. Second intake space; 6. Drive assembly; 61. Motor; 62. Rotating shaft; 63. Mounting seat; 7. Cleaning assembly; 71. First cleaning rod; 72. Connecting plate; 73. Elastic member. Detailed Description of the Invention

[0029] The following is a further detailed description of this application in combination with the attached Figures 1-5 drawings.

[0030] The embodiment of this application discloses a system for treating exhaust gas discharged from an internal combustion engine. Refer to Figure 1, the exhaust gas treatment system of an internal combustion engine includes an exhaust pipe 1, an intake plate 2, and a catalyst injector 3; the intake plate 2 is located inside the exhaust pipe 1, and the intake plate 2 is provided with a plurality of intake holes 21 penetrating along the pipe length direction of the exhaust pipe 1. The intake plate 2 divides the exhaust pipe 1 into a first region 11 and a second region 12. One end of the catalyst injector 3 communicates with the second region 12 of the exhaust passage; the gas discharged from the engine enters the first region 11 through the intake holes 21 of the exhaust pipe 1, and the gas uniformly enters the second region 12 through the plurality of intake holes 21 on the intake plate 2. The catalyst injector 3 injects the catalyst, and the catalyst reacts with the gas to achieve the purification of pollutants in the gas.

[0031] Referring to Figure 1 , in this embodiment, the exhaust pipe 1 is a circular pipe, and the intake plate 2 is a circular plate.

[0032] Referring to Figure 1 , if there is too much gas entering the second region 12, it may cause some gas to fail to react with the catalyst. For this reason, the exhaust gas treatment system of the internal combustion engine further includes a gas collecting pipe 4. The gas collecting pipe 4 is installed in the first region 11 of the exhaust pipe 1. The gas collecting pipe 4 is located at the upper inner position of the exhaust pipe 1. The gas collecting pipe 4 is parallel to the pipe length direction of the exhaust pipe 1, and there is a first intake space 41 between the outer wall of the gas collecting pipe 4 and the inner cavity of the exhaust pipe. The gas collecting pipe 4 is provided with a first intake valve 42 and a first exhaust valve 43. When the exhaust volume is greater than the set threshold, the first intake valve 42 is opened, and the first exhaust valve 43 is closed. Part of the gas in the first region 11 enters the gas collecting pipe 4 for temporary storage, and the remaining gas enters the second region 12 through the intake holes 21 to react with the catalyst. When the reaction between the gas in the second region 12 and the catalyst is completed, the first exhaust valve 43 is opened, and the gas in the gas collecting pipe 4 is discharged into the second region 12, and the catalyst injector 3 continues to release the catalyst, so as to realize the reaction of the remaining gas with the catalyst. When the exhaust volume is less than or equal to the set threshold, the first intake valve 42 is closed, and all the gas in the first region 11 will enter the second region 12 to react with the catalyst. By setting the gas collecting pipe 4, it is possible to temporarily store part of the gas when the exhaust volume is large, so as to realize the complete reaction of the gas in the second region 12 with the catalyst. After the reaction between the gas in the second region 12 and the catalyst is completed, the first exhaust valve 43 is opened. After the gas enters the second region 12 through the intake holes 21, it reacts with the released catalyst again.

[0033] Referring to Figure 1, in order to detect the gas content in the first region 11, a flow sensor 13 is provided in the first region 11 of the exhaust pipe 1. The flow sensor 13 is electrically connected to the first intake valve 42 to control the opening and closing of the first intake valve 42. When the flow sensor 13 detects that the gas content in the first region 11 is higher than the set threshold, the flow sensor 13 transmits an electrical signal to the first intake valve 42, and the first intake valve 42 opens, allowing some gas to enter the gas collecting pipe 4 for temporary storage. The first exhaust valve 43 is also controlled to open and close by transmitting an electrical signal through the control unit.

[0034] Refer to Figure 2 , in order to divert the gas in the first region 11, the internal combustion engine exhaust gas treatment system further includes a diverter plate 5. The diverter plate 5 is connected to the inner side wall of the exhaust pipe 1 and is located in the first intake space 41. The diverter plate 5 is inclined. One end of the diverter plate 5 contacts the intake port of the gas collecting pipe 4, and there is a second intake space 51 between the other end and the bottom wall of the exhaust pipe 1. The diverter plate 5 diverts some gas into the gas collecting pipe 4, and the remaining gas passes through the intake plate 2 through the second intake space 51 and enters the second region 12.

[0035] Refer to Figure 3 , when the gas content in the first region 11 is lower than the set threshold, in order to enable the gas to enter the second region 12 more smoothly, the diverter plate 5 is rotatably connected to the exhaust pipe 1. The rotation axis 52 of the diverter plate 5 along the exhaust pipe 1 is perpendicular to the pipe length direction of the exhaust pipe 1. When the gas content in the first region 11 is higher than the set threshold, the diverter plate 5 rotates to an inclined state to divert some gas into the gas collecting pipe 4 by the diverter plate 5, and the remaining gas passes through the second intake space 51. When the gas content in the first region 11 is lower than or equal to the set threshold, the diverter plate 5 rotates to a horizontal state, so that the gas passes through above and below the diverter plate 5 and enters the second region 12 through the intake holes 21.

[0036] Refer to Figure 3 , in order to drive the diverter plate 5 to rotate, the internal combustion engine exhaust gas treatment system further includes a drive assembly 6. The drive assembly 5 includes a motor 61 and a rotation axis 62. The rotation axis 62 is perpendicular to the pipe length direction of the exhaust pipe 1. The rotation axis 62 is rotatably connected to the side wall of the exhaust pipe 1. The diverter plate 5 is fixedly connected to the rotation axis 62. The output shaft of the motor 61 is coaxially and fixedly connected to the rotation axis 52. The housing of the motor 61 is fixedly connected to the exhaust pipe 1 through a mounting seat 63. The motor 61 drives the rotation axis 62 to rotate, further driving the diverter plate 5 to rotate along the exhaust pipe 1.

[0037] Refer to Figure 4, when the exhaust gas of the engine enters the first region 11, since the gas contains polluting soot particles, the soot particles will adhere to the intake plate 2, resulting in blockage of the intake holes. Therefore, the internal combustion engine exhaust gas treatment system further includes a cleaning assembly 7. The cleaning assembly 7 includes a first cleaning rod 71. The first cleaning rod 71 is parallel to the rotating shaft 62. The first cleaning rod 71 is provided on the side of the intake plate 2 close to the first region 11. One side of the first cleaning rod 71 is in contact with the plate surface of the intake plate 2. The first cleaning rod 71 is slidably connected to the intake plate 2. The sliding direction of the first cleaning rod 71 along the intake plate 2 is perpendicular to both the pipe length direction of the exhaust pipe 1 and the length direction of the rotating shaft 62, so as to clean the soot particles on the plate surface of the intake plate 2 by the first cleaning rod 71.

[0038] Refer to Figure 4 , in order to make the first cleaning rod 71 slide along the direction perpendicular to the pipe length direction of the exhaust pipe 1, the cleaning assembly 7 further includes a connecting plate 72. When one side of the flow dividing plate 5 approaches the gas collecting pipe 4, the plate length direction of the connecting plate 72 is parallel to the pipe length direction of the exhaust pipe 1. One end of the connecting plate 72 is fixedly connected to the flow dividing plate 5, and the other end is connected to the first cleaning rod 71. The flow dividing plate 5 drives the first cleaning rod 71 to slide on the intake plate 2 along the direction perpendicular to the pipe length direction of the exhaust pipe 1 through the connecting plate 72, and the first cleaning rod 71 cleans the intake plate 2. Moreover, by setting the connecting plate 72, the gas in the first region 11 can also be diverted.

[0039] Refer to Figure 4 and Figure 5 , when the flow dividing plate 5 rotates, in order to enable the first cleaning rod 71 to always be in contact with the intake plate 2, the cleaning assembly 7 further includes an elastic member 73. The telescopic direction of the elastic member 73 is parallel to the pipe length direction of the exhaust pipe 1. The elastic member 73 is fixedly connected between the connecting plate 72 and the first cleaning rod 71. In this embodiment, the elastic member 73 is a compression spring. The elastic member 73 has a force that drives the first cleaning rod 71 to move toward the side close to the intake plate 2 under the recoverable deformation. Under the action of the elastic member 73, when the flow dividing plate 5 rotates along the exhaust pipe 1, the first cleaning rod 71 can always be in contact with the intake plate 2 to clean the soot particles on the intake plate 2.

[0040] The implementation principle of an exhaust gas treatment system for an internal combustion engine in an embodiment of the present application is as follows: When the engine exhausts, the gas enters the first region 11 of the exhaust pipe 1. When the exhaust volume is higher than the set threshold, the flow sensor 13 sends a signal to the first intake valve 42. The first intake valve 42 opens, the first exhaust valve 43 closes, and the motor 61 drives the diverter plate 5 to rotate to an inclined state, so that part of the gas enters the collector pipe 4 under the diversion of the diverter plate 5, and the remaining gas enters the second region 12 through the second intake space 51. The catalyst injector 3 releases the catalyst to react with the gas. After the reaction is completed, the first exhaust valve 43 is opened, and the gas in the collector pipe 4 enters the second region 12 through the intake holes to react with the released catalyst; When the exhaust volume is lower than or equal to the set threshold, the first intake valve 42 closes, or both the first intake valve 42 and the first exhaust valve 43 are in the open state. The diverter plate 5 rotates to a horizontal state, and the gas passes through the spaces above and below the diverter plate 5 and further enters the second region 12 to react with the catalyst. During the rotation of the diverter plate 5, the first cleaning rod 71 can clean the soot particles on the intake plate 2.

[0041] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An internal combustion engine exhaust gas treatment system, characterized in that: It comprises an exhaust pipe (1), an air intake plate (2), an air collecting pipe (4) and a catalyst injector (3); The air intake plate (2) is located in the exhaust duct (1), and the air intake plate (2) is provided with a plurality of air intake ports (21) penetrating along the length direction of the exhaust duct (1), and the air intake plate (2) divides the exhaust duct (1) into a first area (11) and a second area (12); The collecting pipe (4) is installed in the first area (11) of the exhaust pipe (1), and a first air intake space (41) is provided between the outer wall of the collecting pipe (4) and the inner cavity of the exhaust pipe (1). The collecting pipe (4) is parallel to the pipe length direction of the exhaust pipe (1). The collecting pipe (4) is located at an upper position in the exhaust pipe (1). A first air intake valve (42) and a first exhaust valve (43) are provided on the collecting pipe (4). One end of the catalyst injector (3) is connected to the second area (12) of the exhaust channel to inject catalyst into the second area (12). If the exhaust volume is greater than a set threshold, the first air intake valve (42) is opened and the first exhaust valve (43) is closed. If the exhaust volume is less than the set threshold, the first air intake valve (42) is closed.

2. An internal combustion engine exhaust gas treatment system according to claim 1, characterized in that: A flow sensor (13) is provided in the first area (11) of the exhaust pipe (1), and the flow sensor (13) is electrically connected to the first intake valve (42).

3. An internal combustion engine exhaust gas treatment system according to claim 1, characterized in that: It also includes a splitter plate (5), the splitter plate (5) is connected to the inner wall of the exhaust pipe (1), and the splitter plate (5) is located in the first air intake space (41), the splitter plate (5) is arranged obliquely, one end of the splitter plate (5) is in contact with the air inlet (21) of the air collecting pipe (4), and the other end forms a second air intake space (51) with the bottom wall of the exhaust pipe (1).

4. An internal combustion engine exhaust gas treatment system according to claim 3, characterized in that: The diverter plate (5) is rotatably connected to the exhaust pipe (1), and the diverter plate (5) is perpendicular to the pipe length direction of the exhaust pipe (1) along the rotation axis (62) of the exhaust pipe (1).

5. An internal combustion engine exhaust gas treatment system according to claim 4, characterized in that: If the exhaust volume is greater than a set threshold, the diverter plate (5) rotates along the exhaust duct (1) to an inclined state; if the exhaust volume is less than the set threshold, the diverter plate (5) rotates along the exhaust duct (1) to a horizontal state.

6. An internal combustion engine exhaust gas treatment system according to claim 4, characterized in that: The invention also comprises a driving assembly (6), the driving assembly (6) comprising a motor (61) and a rotating shaft (62), the rotating shaft (62) being perpendicular to the length direction of the exhaust duct (1), the rotating shaft (62) being rotatably connected to the side wall of the exhaust duct (1), the diverter plate (5) being fixedly connected to the rotating shaft (62), the output shaft of the motor (61) being coaxially fixedly connected to the rotating shaft (62), and the housing of the motor (61) being directly or indirectly fixedly connected to the outer side wall of the exhaust duct (1).

7. An internal combustion engine exhaust gas treatment system according to claim 4, characterized in that: The invention also comprises a cleaning assembly (7), wherein the cleaning assembly (7) comprises a first cleaning rod (71), wherein the first cleaning rod (71) is arranged on a side of the air intake plate (2) close to the first area (11), wherein one side of the first cleaning rod (71) contacts the surface of the air intake plate (2), and the first cleaning rod (71) is slidably connected to the air intake plate (2), and the sliding direction of the first cleaning rod (71) along the air intake plate (2) is perpendicular to both the length direction of the exhaust pipe (1) and the length direction of the rotating shaft (62).

8. An internal combustion engine exhaust gas treatment system according to claim 7, characterized in that: The first cleaning rod (71) is parallel to the length direction of the rotating shaft (62).

9. An internal combustion engine exhaust gas treatment system according to claim 7, characterized in that: The cleaning assembly (7) further comprises a connecting plate (72); when one end of the diverter plate (5) is close to the gas collecting pipe (4), the plate length direction of the connecting plate (72) is parallel to the pipe length direction of the exhaust pipe (1); one end of the connecting plate (72) is fixedly connected to the diverter plate (5), and the other end is connected to the first cleaning rod (71).

10. An internal combustion engine exhaust gas treatment system according to claim 9, characterized in that: The cleaning assembly (7) further comprises an elastic member (73), the expansion and contraction direction of the elastic member (73) being parallel to the pipe length direction of the exhaust pipe (1), and the elastic member (73) being fixedly connected between the connecting plate (72) and the first cleaning rod (71).

Images