A particulate filter regeneration method, device, storage medium, and controller

Abstract

The present application belongs to the technical field of vehicle engineering, and particularly relates to a particle trap regeneration method, device, storage medium and controller; through reversing the installation of the particle trap and interfacing the rotating purging component, the regeneration of the trap is realized on the engine tail gas pipeline; wherein, in order to improve the regeneration effect, a cyclic or intermittent variable working condition control process can be introduced; through setting the first type of working condition and / or the second type of working condition and switching, the pulsating tail gas output is introduced; in the process, high load and high speed and low load and low speed working conditions can be respectively used to realize different excitation states of the tail gas; in addition, the preset lean burn working condition and high temperature tail gas configuration can be combined to further improve the regeneration effect; at the same time, the differential pressure detection closed loop of the two ends of the trap can be introduced to optimize the monitoring ability of the regeneration process, timely end the regeneration process, and improve the operation efficiency; the application of the related products will be helpful to reduce the emission of the internal combustion engine and improve the fuel consumption.

Description

Technical Field

[0001] This invention belongs to the field of vehicle engineering technology, and in particular relates to a method, apparatus, storage medium and controller for regenerating a particulate filter. Background Technology

[0002] Particulate filters have become a basic feature in many gasoline-powered vehicles to meet increasingly stringent emission standards. However, in practice, the activity and processing capacity of particulate filters decrease to varying degrees with mileage. On one hand, this increases engine exhaust back pressure, leading to increased fuel consumption. On the other hand, ash and debris from the three-way catalytic converter gradually accumulate in the particulate filter, potentially causing pipe blockage, which also directly results in increased fuel consumption.

[0003] In the existing technology, the regeneration solutions for particulate matter traps can be divided into external stand-alone type and parking regeneration type; the former has a high cost and poor compatibility; the latter cannot completely remove the particulate matter remaining on the boundaries of the components, nor can it remove the residue and ash in the channels; there is an urgent need to provide a complete solution for the above scenarios to improve the compatibility, ease of use and regeneration capability of the equipment. Summary of the Invention

[0004] This invention discloses a particulate filter regeneration method, including a first component inversion step and a second partition alignment step. In the first component inversion step, a sixth particulate filter is installed in reverse on the exhaust pipe. This sixth particulate filter has already been driven to a preset mileage by the vehicle before being inverted. In the second partition alignment step, a rotating purging component is detachably or fixedly arranged on the side of the inverted sixth particulate filter near the first engine. This rotating purging component includes a second pipe that can rotate around a second rotation axis of the exhaust pipe. The second pipe is bent and its cross-sectional shape is changed near the inverted sixth particulate filter to form the purging component. The purging component can be aligned with the purged end face of the sixth particulate filter near the first engine as its second pipe rotates. Under the condition of ensuring the airtightness of the exhaust pipe, the first engine can be started to perform the regeneration operation.

[0005] Furthermore, a third transmission gear arranged in a ring can be fixed to the outer wall of the second pipeline. The rotating purging component can also be equipped with a fifth power source and a fourth transmission gear. The fifth power source is used to drive the fourth transmission gear. The fourth transmission gear meshes with the third transmission gear and drives the third transmission gear, thereby realizing the rotation operation of the second pipeline.

[0006] Specifically, the third transmission gear can be a ring-shaped helical gear, and the fourth transmission gear can be a bevel gear; the fifth power source can be an electric motor, a pneumatic motor, a hydraulic motor, or other preset rotary power device; wherein, the output shaft of the fifth power source is coaxially connected to the fourth transmission gear.

[0007] Furthermore, the particulate filter regeneration method may also include a third operating condition follow-up step; the third operating condition follow-up step adjusts the working state or condition of the first engine according to a preset operating condition combination; the operating condition combination includes a first type of operating condition and / or a second type of operating condition that occurs cyclically or intermittently; wherein, the difference in exhaust gas velocity between the first type of operating condition and the second type of operating condition should not be less than a preset third velocity difference threshold VV.

[0008] Specifically, the first type of operating condition and / or the second type of operating condition can be adjusted so that the exhaust gas temperature in the area between the purging component and the purged end face is not less than the third exhaust gas temperature threshold TT; wherein the first type of operating condition and the second type of operating condition include at least one lean-burn condition; under the lean-burn condition, the oxygen content in the exhaust gas of the first engine should be higher than the preset oxygen content threshold OX.

[0009] Furthermore, the speed and load of its first type of operating condition should be greater than the preset fifth speed threshold and fifth load threshold, respectively, and the speed and load of its second type of operating condition should be less than the sixth speed threshold and sixth load threshold, respectively.

[0010] To achieve a more thorough regeneration effect, the particulate filter regeneration method can also include a fourth progress optimization step. During the operation of the first engine, the absolute value of the pressure difference PP between the side of the sixth particulate filter closest to the first engine and the other side after reversal is continuously monitored. If the fluctuation of the absolute value of the pressure difference PP is less than the preset pressure difference fluctuation threshold Pchange within a preset time period, the regeneration process is terminated.

[0011] Specifically, the cross-section of its purging component can be configured as an eighth sector-shaped distribution structure; this eighth sector-shaped distribution rotates continuously or intermittently with the second pipeline at a preset angular velocity; wherein, the preset angular velocity can be set to 30 degrees every 20 minutes; in addition, a ring-shaped scale can be set on the outer surface of its second pipeline, and the scale is used to indicate the operation time; its rotating purging component can be set with a transparent area, which is used to observe the time progress corresponding to the above scale; its angular velocity has an inverse increasing function relationship with the pollution degree of the sixth particulate trap; its third exhaust gas temperature threshold TT can be set to 600 degrees Celsius according to the ignition point and other indicators of pollutants.

[0012] Accordingly, the present invention also discloses a particulate filter regeneration device, including a second partition alignment unit; the second partition alignment unit includes a rotary purging component; the rotary purging component includes a second pipeline, which is rotatably mounted around the second rotation axis of the exhaust pipe, and the second pipeline is bent and its cross-sectional shape is changed on the side away from the first engine of the vehicle in the working state to form the purging component.

[0013] Specifically, the purging component can rotate with the second pipeline; the ratio of the cross-sectional area of ​​the purging component or the area of ​​its outlet to the cross-sectional area of ​​the second pipeline should be less than a preset cross-sectional coefficient; the cross-sectional coefficient is a real number greater than zero and less than 1; that is, the diameter change process should attempt to reduce the outlet cross-sectional area of ​​the purging component in order to increase the exhaust pressure.

[0014] The outer wall of the second pipeline may be fixed with a third transmission gear arranged in a ring, and its rotating purging component may also be provided with a fifth power source and a fourth transmission gear. The fifth power source is used to drive the fourth transmission gear; and the fourth transmission gear drives the third transmission gear by meshing with the third transmission gear.

[0015] Specifically, the third transmission gear can be a ring helical gear, and the fourth transmission gear can be a bevel gear; the fifth power source can be an electric motor, a pneumatic motor, a hydraulic motor, or other preset types of rotary power devices; in addition, the output shaft of the fifth power source transmits power by being coaxial with the fourth transmission gear or by being connected through a pitch-changing component.

[0016] In practical applications, in order to improve the processing effect of the particle collector regeneration device, a third working condition follow-up unit can also be provided; the third working condition follow-up unit can adjust the working state or working condition of the first engine according to the preset working condition combination; wherein, the working condition combination includes a first type of working condition and / or a second type of working condition set in a cycle or at intervals; under the first type of working condition and the second type of working condition, it must be ensured that the difference in exhaust gas velocity of the first engine is not less than the preset third velocity difference threshold VV.

[0017] Specifically, its third working condition follow-up unit adjusts the first type of working condition and / or the second type of working condition to ensure that the exhaust gas temperature in the area between the purging component and the purged end face is not less than the third exhaust gas temperature threshold TT.

[0018] In order to improve the burnout effect of particulate pollutants, at least one lean-burn condition should be included in the first and second operating conditions; under the lean-burn condition, the oxygen content in the exhaust gas of the first engine should be higher than the preset oxygen content threshold OX.

[0019] In addition, in order to improve the effect of high-temperature exhaust gas on the removal of particulate pollutants during the regeneration process, the speed and load of the first type of working condition can be set to be greater than the preset fifth speed threshold and fifth load threshold, respectively, while the speed and load of the second type of working condition must be set to be less than the sixth speed threshold and sixth load threshold, respectively.

[0020] Furthermore, the particulate filter regeneration device may also be equipped with a fourth progress optimization unit to automatically control the progress of the regeneration process; wherein, during the operation of the first engine, the absolute value of the pressure difference PP between one side and the other side of the sixth particulate filter inlet connected in series with the downwind port of the rotary purging component is continuously detected; if the fluctuation of the absolute value of the pressure difference PP is less than the preset pressure difference fluctuation threshold Pchange within a preset time period, the regeneration process is terminated.

[0021] The cross-section of the purging component can be distributed in an eighth sector shape; the eighth sector shape rotates continuously or intermittently with the second pipeline at a preset angular velocity; the preset angular velocity can be set to 30 degrees every 20 minutes, and a ring-shaped scale can be set on the outer surface of the second pipeline to indicate time; in addition, the rotating purging component must be provided with a transparent area, and the time progress corresponding to the aforementioned scale is observed using the transparent area.

[0022] Specifically, the aforementioned angular velocity can be set according to the degree of pollution of the sixth particulate filter, and exhibits an inverse increasing function relationship; that is, for more severe pollution, a longer regeneration time needs to be set, which corresponds to a lower rotational angular velocity; in addition, in order to ensure the ability of oxygen-enriched exhaust gas to remove combustible pollutants, its third exhaust gas temperature threshold TT can be set to 600 degrees Celsius or higher; wherein, the first engine can be a diesel engine, a gasoline engine or other internal combustion engine that requires particulate filter regeneration.

[0023] Furthermore, the present invention also discloses a storage medium and a controller; the same inventive concept is implemented on different carriers; wherein, the storage medium includes a storage medium body for storing a computer program; when the computer program is executed by a microprocessor, it can implement any of the above-mentioned particle trap regeneration methods; similarly, its controller also includes any of the above-mentioned particle trap regeneration devices and / or any of the above-mentioned storage medium.

[0024] In summary, this invention achieves particulate regeneration by reversing the installation of the particulate filter and connecting it to the rotary purging component, thus externally attaching it to the engine exhaust pipe. To improve the regeneration effect, a cyclic or intermittent variable operating condition control process can be introduced. Pulsating exhaust gas output is introduced by setting and switching between a first-type and / or second-type operating condition. During this process, different excitation states of the exhaust gas can be achieved by using high-load, high-speed and low-load, low-speed operating conditions respectively. Furthermore, the regeneration effect can be further improved by combining preset lean-burn conditions and high-temperature exhaust gas configurations.

[0025] Meanwhile, by introducing a closed-loop differential pressure detection system at both ends of the filter, the monitoring capability of the regeneration process can be optimized, the regeneration process can be terminated in a timely manner, and the operating efficiency can be improved. The application of related products will help reduce emissions from internal combustion engines and improve fuel consumption.

[0026] It should be noted that the terms "first," "second," and similar terms used in this article are merely for describing the constituent elements of the technical solution and do not constitute a limitation on the technical solution, nor should they be interpreted as an indication or implication of the importance of the corresponding elements; elements with terms such as "first," "second," or similar terms indicate that at least one of the elements is included in the corresponding technical solution. Attached Figure Description

[0027] To more clearly illustrate the technical solution of the present invention and facilitate a further understanding of its technical effects, features, and objectives, the present invention will be described in detail below with reference to the accompanying drawings. The drawings constitute an essential part of the specification and are used together with Embodiment 1 of the present invention to illustrate the technical solution of the present invention, but do not constitute a limitation on the present invention.

[0028] The same reference numerals in the attached diagrams represent the same parts, specifically:

[0029] Figure 1 This is a schematic diagram showing the integration of the device embodiment of the present invention with the engine and controller system.

[0030] Figure 2 This is a schematic diagram showing the installation and core component composition of an embodiment of the device of the present invention.

[0031] Figure 3 This is a cross-sectional schematic diagram of an embodiment of the device of the present invention.

[0032] Figure 4 This is a three-dimensional structural diagram of an embodiment of the device of the present invention.

[0033] Figure 5 This is a schematic diagram of the process of an embodiment of the method of the present invention.

[0034] Figure 6 This is a schematic diagram of the structural composition of an embodiment of the device of the present invention.

[0035] Figure 7 This is a schematic diagram of the layout structure of an embodiment of the product of the present invention. Figure 1 .

[0036] Figure 8 This is a schematic diagram of the layout structure of an embodiment of the product of the present invention. Figure 2 .

[0037] Figure 9 This is a schematic diagram of the layout structure of an embodiment of the product of the present invention. Figure 3 .

[0038] in:

[0039] 100 - Exhaust pipe;

[0040] 101 - First Engine;

[0041] 102 - Second catalyst;

[0042] 105 - Fifth sensor;

[0043] 107 - Seventh Pipeline;

[0044] 108 - Pipeline eighth end;

[0045] 109 - Ninth end of the pipeline;

[0046] 200 - Rotary blowing component;

[0047] 201 - First connecting component;

[0048] 202-Second Pipeline;

[0049] 203 - Third transmission gear;

[0050] 204 - Fourth transmission gear;

[0051] 205 - The Fifth Power Source;

[0052] 206 - Sixth Particle Collector;

[0053] 207 - Areas already cleared;

[0054] 208 - Current Cleanup Area;

[0055] 209 - Area to be cleaned;

[0056] 210 - Purge components;

[0057] 211 - The end face being scanned;

[0058] 222 - Second Rotational Axis;

[0059] 310 - First component inversion step;

[0060] 320 - Second partition alignment steps;

[0061] 330 - Third Working Condition Follow-up Steps;

[0062] 340 - Fourth progress optimization step;

[0063] 400-Particle trap regeneration device;

[0064] 420 - Second partition aligned with the unit;

[0065] 430 - Third Working Condition Follow-up Unit;

[0066] 440 - Fourth Schedule Optimization Unit;

[0067] 900 - Vehicles;

[0068] 901 - Controller;

[0069] 903 - Computer storage media. Implementation

[0070] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described below are merely illustrative of the technical solutions of the present invention, and not intended to limit the invention. Furthermore, the parts described in the embodiments or drawings are merely illustrative examples of relevant parts of the present invention, and not the entirety of the invention.

[0071] like Figure 5 The particle trap regeneration method shown includes a first component inversion step 310 and a second partition alignment step 320; as shown Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in the first component inversion step 310, the sixth particulate filter 206 is installed in reverse on the exhaust pipe 100. Before the sixth particulate filter 206 is reversed, it has been running as follows: Figure 7 , Figure 8 , Figure 9 The vehicle shown has a preset mileage of 900 km.

[0072] In the second partition alignment step 320, a rotary purging component 200 is detachably or fixedly arranged on the side of the sixth particulate trap 206 after reversal near the first engine 101; the rotary purging component 200 includes a second pipe 202, which rotates around the second rotation axis 222 of the exhaust pipe 100, and the second pipe 202 is bent and its cross-sectional shape is changed on the side of the sixth particulate trap 206 after reversal to form a purging component 210.

[0073] Specifically, its purging component 210 can rotate with the second pipeline 202 and be aligned with the purged end face 211 of the sixth particle collector 206 near the first engine 101; provided that the exhaust pipeline 100 is airtight, the regeneration operation can be started by starting the first engine 101.

[0074] Furthermore, the outer wall of the second pipeline 202 is fixed with a third transmission gear 203 arranged in a ring, and the rotating purging component 200 may also be provided with a fifth power source 205 and a fourth transmission gear 204; the fifth power source 205 is used to drive the fourth transmission gear 204; the fourth transmission gear 204 meshes with the third transmission gear 203 and drives the third transmission gear 203, thereby driving the second pipeline 202 to rotate.

[0075] Among them, the third transmission gear 203 is a ring helical gear, the fourth transmission gear 204 is a bevel gear; the fifth power source 205 is an electric motor; the output shaft of the fifth power source 205 is coaxially connected to the fourth transmission gear 204.

[0076] To improve the efficiency and effectiveness of regeneration, the device also includes a third operating condition follow-up step 330. The third operating condition follow-up step 330 adjusts the working state or condition of the first engine 101 according to a preset operating condition combination. The operating condition combination includes a first type of operating condition and / or a second type of operating condition that occurs cyclically or intermittently. The difference in exhaust gas velocity between the first type of operating condition and the second type of operating condition is not less than a preset third velocity difference threshold VV.

[0077] Specifically, the first type of operating condition and / or the second type of operating condition can be adjusted so that the exhaust gas temperature in the area between the purging component 210 and the purged end face 211 is not less than the third exhaust gas temperature threshold TT; the first type of operating condition and the second type of operating condition should include at least one lean-burn condition; wherein, under the lean-burn condition, the oxygen content in the exhaust gas of the first engine 101 should be higher than the preset oxygen content threshold OX; the speed and load of the first type of operating condition should be greater than the preset fifth speed threshold and fifth load threshold, respectively, and the speed and load of the second type of operating condition should be less than the sixth speed threshold and sixth load threshold, respectively.

[0078] The process also includes a fourth progress optimization step 340. During the operation of the first engine 101, the absolute value PP of the pressure difference between the side of the sixth particulate trap 206 closest to the first engine 101 and the other side after reversal is continuously monitored. If, within a preset time period, the fluctuation of this absolute value PP is less than a preset pressure difference fluctuation threshold Pchange, the regeneration process can be terminated, restoring the vehicle to normal operating configuration. For example, this can be achieved by replacing the short connecting pipe... Figure 2 The sixth particle trap shown.

[0079] Furthermore, the cross-section of its purging component 210 adopts an eighth sector distribution, and is aligned with the current cleaning area 208; the eighth sector distribution can rotate continuously or intermittently with the second pipeline 202 at a preset angular velocity; wherein, the preset angular velocity is set at 30 degrees every 20 minutes, and the outer surface of its second pipeline 202 may include a ring-shaped scale for indicating time; its rotating purging component 200 may be provided with a corresponding transparent area for observing the time progress corresponding to the aforementioned scale; the aforementioned angular velocity has an inverse increasing function relationship with the degree of contamination of the sixth particle trap 206; its third exhaust gas temperature threshold TT is 600 degrees Celsius.

[0080] like Figures 6 to 9The particle trap regeneration device 400 shown includes a second partition alignment unit 420; wherein, the second partition alignment unit 420 includes a rotary purging component 200; the rotary purging component 200 includes a second conduit 202, such as... Figure 1 , Figure 2 , Figure 3 As shown, its second pipe 202 can be rotatably installed around the second rotation axis 222 of the exhaust pipe 100. When the second pipe 202 is in operation, it is bent and its cross-sectional shape is changed on the side away from the first engine 101 to form a purging component 210. The purging component 210 rotates with the second pipe 202. The ratio of the cross-sectional area of ​​the purging component 210 or its outlet to the cross-sectional area of ​​the second pipe 202 is less than a preset variable cross-sectional coefficient. The variable cross-sectional coefficient is a real number that is greater than zero and less than 1.

[0081] The second pipeline 202 has a ring-shaped distribution of third transmission gears 203 fixed on its outer wall. Its rotating purging component 200 also includes a fifth power source 205 and a fourth transmission gear 204. The fifth power source 205 drives the fourth transmission gear 204. The fourth transmission gear 204 meshes with the third transmission gear 203 and drives the third transmission gear 203.

[0082] Specifically, its third transmission gear 203 is a ring-shaped helical gear, and its fourth transmission gear 204 is a bevel gear; its fifth power source 205 is an electric motor; and the output shaft of its fifth power source 205 is coaxially connected to the fourth transmission gear 204.

[0083] Furthermore, the particulate collector regeneration device 400 also includes a third working condition follow-up unit 430; the third working condition follow-up unit 430 adjusts the working state or working condition of the first engine 101 according to a preset working condition combination; wherein, the working condition combination includes a first type of working condition and / or a second type of working condition that appear cyclically or intermittently; the difference in exhaust gas velocity of the first engine 101 under the first type of working condition and the second type of working condition should not be less than a preset third velocity difference threshold VV.

[0084] The third operating condition follow-up unit 430 adjusts the first and / or second operating conditions to ensure that the exhaust gas temperature in the area between the purging component 210 and the purged end face 211 is not less than the third exhaust gas temperature threshold TT. The first and second operating conditions should include at least one lean-burn condition. Under the lean-burn condition, the oxygen content in the exhaust gas of the first engine 101 should be higher than the preset oxygen content threshold OX. The speed and load of the first operating condition are greater than the preset fifth speed threshold and fifth load threshold, respectively, and the speed and load of the second operating condition should be less than the sixth speed threshold and sixth load threshold, respectively.

[0085] To achieve closed-loop control, the particulate filter regeneration device 400 is also equipped with a fourth progress optimization unit 440. During the operation of the first engine 101, the absolute value of the pressure difference PP between the inlet side and the other side of the sixth particulate filter 206 connected in series with the downwind port of the rotary purging component is continuously monitored. If the fluctuation of the absolute value of the pressure difference PP is less than the preset pressure difference fluctuation threshold Pchange within a preset time period, the regeneration process is terminated.

[0086] The purging component 210 has an eighth sector-shaped cross-section; the eighth sector-shaped distribution rotates continuously or intermittently with the second pipeline 202 at a preset angular velocity; the preset angular velocity is set at 30 degrees every 20 minutes; the outer surface of the second pipeline 202 may be provided with a ring-shaped scale for indicating time.

[0087] Furthermore, its rotating purging component 200 may also be provided with a transparent area, which is used to observe the time progress corresponding to its scale; its angular velocity has an inverse increasing function relationship with the pollution level of the sixth particle trap 206; its third exhaust gas temperature threshold TT is 600 degrees Celsius; the first engine 101 is a diesel engine or a gasoline engine.

[0088] like Figures 6 to 9 The storage medium 903 shown includes a storage medium body for storing a computer program; when executed by a microprocessor, the computer program can implement the particle trap regeneration method as described above.

[0089] Similarly, its controller 901 includes a particle trap regeneration device 400 as given in any of the above and / or any of the above storage media 903.

[0090] In summary, this embodiment of the invention, based on varying vehicle operating conditions, employs a high-temperature exhaust rotary purging process to remove residual carbon ash and other impurities from the particulate filter; it can thoroughly remove carbon particles and ash residue from the particulate filter. Figure 1As shown, an external purging device, namely a particulate filter regeneration device 400, is installed between the three-way catalytic converter 102 and the particulate filter 206. The engine controller controls the engine parking regeneration mode and the operation of the external purging device. The engine parking regeneration mode is a special mode used to remove particulate matter trapped on the gasoline engine particulate filter carrier. The particulate filter usually has a certain amount of particulate matter trapped on it. When implementing this mode, the engine controller needs to keep the vehicle stationary. By increasing the engine speed (usually at 3000-4000 r / min) to increase the engine exhaust temperature, and further by delaying the engine ignition angle and reducing the air-fuel ratio, the oxygen-rich, high-temperature exhaust gas generated by the engine flows through the particulate filter, thereby regenerating the particulate filter. By combining this mode with the embodiment of the present invention, a more thorough and efficient particulate filter regeneration can be achieved.

[0091] In addition, during the entire carbon removal and ash removal process, the particulate filter 206 is installed in reverse in the exhaust pipe, i.e., the tail gas pipe, through the flanges at the front and rear. Based on this, it will be more conducive to the combustion of carbon soot in the particulate filter 206 by the high-temperature oxygen-rich exhaust gas discharged from the engine. At the same time, it is also more conducive to blowing out the ash and non-combustible residue in the channel.

[0092] Furthermore, by using differential pressure sensors installed on the sampling tubes at both ends of the first engine 101, the engine controller can determine whether the removal process of particulate matter and ash trapped in the carrier has ended by reading the differential pressure value of the differential pressure sensors. Specifically, during the entire carbon removal and ash removal process, the differential pressure measured by the differential pressure sensor, i.e., the fifth sensor 105, continuously decreases. When the rotary purging device rotates 360° or after a preset interval, it will continue to rotate a second time or at other angles until the differential pressure sensor detects that the differential pressure remains unchanged or the absolute value of the change is less than a certain preset value, then it is confirmed that the carbon removal and ash removal process has ended.

[0093] On the one hand, during the carbon and ash removal process, the engine controller controls the engine to operate in a lean-burn condition, thus ensuring that the exhaust contains a certain amount of oxygen. On the other hand, the engine controller controls the engine to frequently switch between high-speed, high-load and low-speed, low-load conditions. This not only causes the exhaust flowing through the particulate filter to vibrate the particulate filter, but also allows the oxygen carried by the high-temperature exhaust (above 600 degrees Celsius) to burn and remove carbon soot particles under the catalytic action of the precious metal carrier in the particulate filter. It is worth noting that the particulate filter is connected in reverse order in the pipeline, which is beneficial for blowing out ash and non-combustible residues from the channels while removing carbon.

[0094] The installation and core components of the external rotary purging device, i.e., the particle collector regeneration device 400, are as follows: Figure 2 As shown, the cross-sectional view and structural schematic of the external rotary purging device are as follows: Figure 3 , Figure 4 As shown.

[0095] like Figure 2 As shown, the external flange, i.e. the first connecting component 201, connects the particulate filter regeneration device 400 to the exhaust pipe 100 of the vehicle 900; the engine controller 901 controls the electric motor, i.e. the fifth power source 205, and the rotation of the electric motor causes the bevel gear, i.e. the fourth transmission gear, to rotate, thereby driving the ring helical gear, i.e. the third transmission gear 203, to rotate.

[0096] The engine controller controls the speed of the electric motor, which in turn enables the ring helical gear to rotate at regular intervals; for example, it rotates 30 degrees every 20 minutes. This speed can be adjusted according to different particulate filters and different carbon accumulation levels.

[0097] The rotation of the ring helical gear will drive the entire external pipeline, namely the second pipeline 202, to rotate, thereby guiding the engine exhaust to be sprayed out from the front nozzle, namely the purging component 210. The sprayed oxygen-containing high-temperature exhaust will cause the particulate matter captured on the channel to burn. The engine controller 901 controls the engine operating conditions to change, causing the exhaust flow rate to switch between high and low, thereby blowing the ash in the channel out of the channel, thus achieving the effect of carbon removal and ash removal.

[0098] First, compared with existing independent external carbon and ash removal devices for vehicles, the method disclosed in this embodiment of the invention is based on the high-temperature exhaust rotary purging process under varying operating conditions of the whole vehicle, which will more simply and flexibly achieve carbon and ash removal of the particulate filter. Its integration and upgrade costs are controllable and it is easy to implement with a more economical configuration.

[0099] Secondly, compared with the existing whole vehicle parking regeneration function, the method disclosed in this embodiment of the invention can realize the pulse change of exhaust flow through the variable operating condition control of the engine; thereby achieving the vibration removal effect on carbon particulate matter and ash in the carrier; in addition, this embodiment of the invention also achieves the removal of carbon particulate matter and ash more efficiently by reversing the installation of the particulate trap.

[0100] Third, compared with existing external independent carbon removal and ash removal devices, the external rotary purging device disclosed in the embodiments of the present invention can concentrate exhaust gas in a smaller carrier area and clean up the carbon particles that cannot be completely regenerated on the carrier boundary. This results in the particulate filter having a smaller exhaust back pressure after being regenerated by the device or system of the present invention, which in turn helps to improve the fuel economy of the vehicle.

[0101] It should be noted that the above embodiments are only for more clearly illustrating the technical solution of the present invention. Those skilled in the art will understand that the implementation of the present invention is not limited to the above content. Any obvious changes, substitutions or replacements made based on the above content do not exceed the scope of the technical solution of the present invention. Other implementations will also fall within the scope of the present invention without departing from the concept of the present invention.

Claims

1. A method for regenerating a particulate filter, characterized in that, The process includes a first component inversion step (310) and a second partition alignment step (320); wherein: in the first component inversion step (310), a sixth particulate filter (206) is installed in reverse on the exhaust pipe (100), and the sixth particulate filter (206) has been running at a preset mileage of the vehicle (900) before being inverted; in the second partition alignment step (320), a rotary purge component (200) is detachably or fixedly arranged on the side of the inverted sixth particulate filter (206) near the first engine (101); the rotary purge component (200) includes a second pipe (202). The second pipe (202) rotates around the second rotation axis (222) of the exhaust pipe (100). The second pipe (202) bends and changes its cross-sectional shape near the reversed sixth particulate trap (206) to form a purging component (210). The purging component (210) rotates with the second pipe (202) and aligns with the purged end face (211) of the sixth particulate trap (206) near the first engine (101). The airtightness of the exhaust pipe (100) is ensured and the first engine (101) is started for regeneration.

2. The particulate filter regeneration method as described in claim 1, wherein: The outer wall of the second pipeline (202) is fixed with a third transmission gear (203) arranged in a ring. The rotary purging component (200) also includes a fifth power source (205) and a fourth transmission gear (204). The fifth power source (205) drives the fourth transmission gear (204). The fourth transmission gear (204) meshes with the third transmission gear (203) and drives the third transmission gear (203).

3. The particulate filter regeneration method as described in claim 2, wherein: The third transmission gear (203) is a ring helical gear, and the fourth transmission gear (204) is a bevel gear; the fifth power source (205) is an electric motor, a pneumatic motor, a hydraulic motor, or a preset rotary power device; the output shaft of the fifth power source (205) is coaxially connected to the fourth transmission gear (204).

4. The particulate filter regeneration method according to any one of claims 1 to 3, further comprising a third operating condition follow-up step (330); the third operating condition follow-up step (330) adjusts the operating state or condition of the first engine (101) according to a preset operating condition combination; wherein, The operating condition combination includes a first type of operating condition and / or a second type of operating condition that occur cyclically or intermittently; the difference in exhaust gas velocity of the first engine (101) under the first type of operating condition and the second type of operating condition is not less than a preset third velocity difference threshold VV.

5. The particulate filter regeneration method as claimed in claim 4, wherein: The first type of operating condition and / or the second type of operating condition are adjusted such that the exhaust gas temperature in the region between the purging component (210) and the purged end face (211) is not less than the third exhaust gas temperature threshold TT; the first type of operating condition and the second type of operating condition include at least one lean-burn condition; under the lean-burn condition, the oxygen content in the exhaust gas of the first engine (101) is higher than the preset oxygen content threshold OX; the speed and load of the first type of operating condition are greater than the preset fifth speed threshold and fifth load threshold, respectively, and the speed and load of the second type of operating condition are less than the sixth speed threshold and sixth load threshold, respectively.

6. The particulate filter regeneration method according to any one of claims 1 to 3 or claim 5 further includes a fourth progress optimization step (340); during the operation of the first engine (101), the absolute value of the pressure difference PP between the side of the sixth particulate filter (206) after reversal and the other side of the first engine (101) is continuously detected; if the fluctuation of the absolute value of the pressure difference PP is less than the preset pressure difference fluctuation threshold Pchange within a preset time period, the regeneration process is terminated.

7. The particulate filter regeneration method as claimed in claim 5, wherein: The cross-section of the purging component (210) is arranged in an eighth sector shape; the eighth sector shape rotates continuously or intermittently with the second pipeline (202) at a preset angular velocity; the preset angular velocity includes a setting of 30 degrees every 20 minutes; the outer surface of the second pipeline (202) includes a ring-shaped scale, which is used to indicate time; the rotating purging component (200) includes a transparent area, which is used to observe the time progress corresponding to the scale; the angular velocity has an inverse increasing function relationship with the degree of contamination of the sixth particle trap (206); the third exhaust gas temperature threshold TT is 600 degrees Celsius.

8. A particulate filter regeneration apparatus (400), employing the particulate filter regeneration method according to any one of claims 1 to 7, comprising a second partition alignment unit (420); wherein: The second partition alignment unit (420) includes a rotary purging component (200); the rotary purging component (200) includes a second pipe (202), the second pipe (202) is rotatably mounted around the second rotation axis (222) of the exhaust pipe (100), the second pipe (202) is bent and its cross-sectional shape is changed on the side away from the first engine (101) in the working state to form a purging component (210); the purging component (210) rotates with the second pipe (202); the ratio of the cross-sectional area of ​​the purging component (210) or its outlet to the cross-sectional area of ​​the second pipe (202) is less than a preset variable cross-sectional coefficient; The variable cross-sectional coefficient is a real number that is greater than zero and less than 1.

9. The particle trap regeneration device (400) as described in claim 8, wherein: The outer wall of the second pipeline (202) is fixed with a third transmission gear (203) arranged in a ring. The rotary purging component (200) also includes a fifth power source (205) and a fourth transmission gear (204). The fifth power source (205) drives the fourth transmission gear (204). The fourth transmission gear (204) meshes with the third transmission gear (203) and drives the third transmission gear (203).

10. The particle trap regeneration device (400) as claimed in claim 9, wherein: The third transmission gear (203) is a ring helical gear, and the fourth transmission gear (204) is a bevel gear; the fifth power source (205) is an electric motor, a pneumatic motor, a hydraulic motor, or a preset rotary power device; the output shaft of the fifth power source (205) is coaxially connected to the fourth transmission gear (204).

11. The particulate filter regeneration device (400) as described in any one of claims 8 to 10, further comprising a third operating condition follow-up unit (430); the third operating condition follow-up unit (430) adjusts the operating state or condition of the first engine (101) according to a preset operating condition combination; wherein, The operating condition combination includes a first type of operating condition and / or a second type of operating condition that occur cyclically or intermittently; the difference in exhaust gas velocity of the first engine (101) under the first type of operating condition and the second type of operating condition is not less than a preset third velocity difference threshold VV.

12. The particulate trap regeneration apparatus (400) as claimed in claim 11, wherein: The third operating condition follow-up unit (430) adjusts the first type of operating condition and / or the second type of operating condition so that the exhaust gas temperature in the region between the purging component (210) and the purged end face (211) is not less than the third exhaust gas temperature threshold TT; the first type of operating condition and the second type of operating condition include at least one lean-burn condition; under the lean-burn condition, the oxygen content in the exhaust gas of the first engine (101) is higher than the preset oxygen content threshold OX; the speed and load of the first type of operating condition are greater than the preset fifth speed threshold and fifth load threshold, respectively, and the speed and load of the second type of operating condition are less than the sixth speed threshold and sixth load threshold, respectively.

13. The particulate filter regeneration unit (400) as described in any one of claims 8 to 10 or claim 12 further includes a fourth progress optimization unit (440); during the operation of the first engine (101), the absolute value of the pressure difference PP between one side and the other side of the inlet of the sixth particulate filter (206) connected in series with the downwind port of the rotary purging component is continuously detected; if the fluctuation of the absolute value of the pressure difference PP is less than a preset pressure difference fluctuation threshold Pchange within a preset time period, the regeneration process is terminated.

14. The particulate trap regeneration apparatus (400) as claimed in claim 12, wherein: The cross-section of the purging component (210) is arranged in an eighth sector shape; the eighth sector shape rotates continuously or intermittently with the second pipeline (202) at a preset angular velocity; the preset angular velocity includes a setting of 30 degrees every 20 minutes; the outer surface of the second pipeline (202) includes a ring-shaped scale, which is used to indicate time; the rotating purging component (200) includes a transparent area, which is used to observe the time progress corresponding to the scale; the angular velocity has an inverse increasing function relationship with the pollution level of the sixth particulate trap (206); the third exhaust gas temperature threshold TT is 600 degrees Celsius; the first engine (101) is a diesel engine or a gasoline engine.

15. A computer storage medium (903) comprising a storage medium body for storing a computer program; said computer program, when executed by a microprocessor, implements the particle trap regeneration method as described in any one of claims 1 to 7.

16. A controller (901) comprising a particle trap regeneration device (400) as claimed in any one of claims 8 to 14 and / or a computer storage medium (903) as claimed in claim 15.

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