Vehicle exhaust system and vehicle

Abstract

The utility model relates to the technical field of vehicle exhaust systems, in particular to a vehicle exhaust system which comprises a catalytic converter and a particle trap communicated with the catalytic converter. The silencer module is communicated with the particle trap, the cleaning module is arranged between the particle trap and an air conditioner module of a vehicle, and the cleaning module is communicated with the particle trap and the air conditioner module and used for collecting condensate water of the air conditioner module to clean the particle trap. The cleaning module comprises a water storage assembly, a high-pressure water pump and an ejector. The water storage assembly is communicated with the air conditioner module, the high-pressure water pump is communicated with the water storage assembly and the ejector, and the end, away from the high-pressure water pump, of the ejector is communicated with the particle trap. The cleaning mode is directly carried out on the vehicle, dismounting is not needed, the shutdown time of the vehicle due to cleaning of the particle trap is greatly shortened, and the use efficiency of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle exhaust systems, in particular to a vehicle exhaust system and a vehicle. BACKGROUND

[0002] With the global warming and the increasingly serious greenhouse effect, the requirements of countries for the emission limit value of automobile pollutants are continuously improved. The gradual implementation of the national sixth emission regulation puts forward extremely strict standards for the mass and number of particulate matters. In order to meet the requirements of the regulation, the particulate trap is widely used in the automobile exhaust treatment system for filtering the particulate matters in the exhaust gas.

[0003] In the working process of the particulate trap, the particulate matters in the exhaust gas will gradually accumulate and remain when passing through the porous medium wall of the filter body, which makes the exhaust back pressure continuously rise. When the exhaust back pressure exceeds a certain limit, the working performance of the engine will be significantly reduced. In order to maintain the normal operation of the particulate trap and the engine, the deposited particulate matters in the filter body must be removed, and this process is called regeneration of the particulate trap.

[0004] The regeneration of the particulate trap mainly includes active regeneration and passive regeneration. The active regeneration needs to provide additional energy from the outside to increase the temperature of the filter body, so that the deposited particulate matters are burned to restore the clean state of the filter body. The passive regeneration uses a chemical catalytic method to reduce the reaction activity of the particulate matters, so that they are burned under normal operating conditions. However, no matter which regeneration method is used, after the particulate matters are burned, there will be some substances that cannot or are difficult to burn and the ash left after burning. After a long time of accumulation, a large amount of such substances will be stored on the particulate trap, which not only leads to the further increase of the exhaust back pressure, but also affects the fuel consumption of the whole vehicle. At the same time, the particulate trap may be disabled due to the blockage of the particulate matters, which affects the exhaust emission to meet the standards. Therefore, the particulate trap needs to be removed from the vehicle for cleaning. However, it is time-consuming and laborious to remove the particulate trap from the whole exhaust system, and the disassembly and assembly will also increase the downtime of the vehicle. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the present application aims to provide a vehicle exhaust system and a vehicle to solve the problem that the particulate trap needs to be removed from the vehicle for cleaning.

[0006] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0007] The first aspect of the present application provides a vehicle exhaust system, which comprises a catalytic converter;

[0008] a particulate trap, which is in communication with the catalytic converter;

[0009] a muffler module, which is in communication with the particulate trap;

[0010] a cleaning module arranged between the particle trap and an air conditioning module of the vehicle;

[0011] the cleaning module is in communication with the particle trap and the air conditioning module respectively, for collecting condensed water of the air conditioning module to clean the particle trap;

[0012] the cleaning module comprises a water storage assembly, a high-pressure water pump and a sprayer;

[0013] the water storage assembly is in communication with the air conditioning module;

[0014] the high-pressure water pump is in communication with the water storage assembly and the sprayer respectively;

[0015] an end of the sprayer away from the high-pressure water pump is in communication with the particle trap.

[0016] Optionally, the cleaning module further comprises a first electromagnetic valve and a second electromagnetic valve;

[0017] the first electromagnetic valve is arranged between the particle trap and the muffler module, and is in communication with the particle trap and the muffler module respectively;

[0018] the second electromagnetic valve is in communication with the particle trap, and an end of the second electromagnetic valve is in communication with the outside.

[0019] Optionally, the vehicle exhaust system further comprises a control module;

[0020] the high-pressure water pump, the sprayer, the first electromagnetic valve and the second electromagnetic valve are electrically connected with the control module;

[0021] in a cleaning mode, the control module controls the first electromagnetic valve to be closed, the second electromagnetic valve to be opened, and controls the high-pressure water pump and the sprayer to work, so as to clean the particle trap;

[0022] in a normal mode, the control module controls the first electromagnetic valve to be opened, and controls the second electromagnetic valve and the sprayer to be closed, so as to ensure that the vehicle exhaust system exhausts smoothly.

[0023] Optionally, the water storage assembly comprises a water storage tank and a filter unit;

[0024] the water storage tank is in communication with the air conditioning module and / or a radiator water tank of the vehicle, and the water storage tank is in communication with the high-pressure water pump;

[0025] the filter unit is arranged between the water storage tank and the air conditioning module and / or the radiator water tank.

[0026] Optionally, the water storage assembly further comprises a liquid level sensor and a third electromagnetic valve.

[0027] The liquid level sensor is arranged inside the water storage tank, and the third electromagnetic valve is arranged between the water storage tank and the air conditioning module.

[0028] Optionally, the filter unit comprises a coarse filter screen and a fine filter screen.

[0029] The pore size of the coarse filter screen is larger than that of the fine filter screen, and the coarse filter screen and the fine filter screen are arranged in sequence along the direction from the air conditioning module to the water storage tank.

[0030] Optionally, the filter unit further comprises an activated carbon adsorption layer arranged between the fine filter screen and the water storage tank.

[0031] Optionally, a plurality of the ejectors are arranged, and each of the ejectors is communicated at a different position of the particle trap so that the coverage areas of the ejectors for spraying inside the particle trap are different.

[0032] Optionally, a plurality of the ejectors are arranged, and each of the ejectors is communicated at the same position on the particle trap, and the angles of each of the ejectors towards the inside of the particle trap are different, so that the angles of the ejectors for spraying inside the particle trap are different.

[0033] The second aspect of the embodiments of the present application provides a vehicle, which comprises the vehicle exhaust system provided in the first aspect.

[0034] Compared with the prior art, the vehicle exhaust system and the vehicle provided in the present application have the following advantages:

[0035] The problem of the particle trap being blocked by residual substances after burning particulate matters is effectively solved, the good filtering performance of the particle trap is maintained, and the particle trap can continuously and effectively capture particulate matters in exhaust gas, so that the vehicle exhaust emission meets the standard, and the normal working performance of the engine is also maintained, avoiding problems such as the increase of exhaust back pressure and the decrease of engine performance caused by the blockage of the particle trap.

[0036] Meanwhile, the conventional particle trap cleaning method may need to disassemble the particle trap from the vehicle, which often needs to consume a large amount of time. The cleaning method in the present application is directly performed on the vehicle without disassembly, which greatly shortens the downtime of the vehicle for cleaning the particle trap, and improves the use efficiency of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of this application illustrate the

[0038] Figure 1 A schematic diagram of the structure connection of a vehicle exhaust system and a vehicle according to an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the control module connection of a vehicle exhaust system and a vehicle according to an embodiment of the present application.

[0040] Legend of signs:

[0041] Catalytic converter 1, particulate trap 2, muffler module 3, water storage assembly 41, high-pressure water pump 42, sprayer 43, first electromagnetic valve 44, second electromagnetic valve 45, air conditioning module 5, air filter 6, turbocharger 7, intercooler heat dissipation module 8, engine 9, control module 100. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0043] As shown in Figure 1 The first aspect of the present application provides a vehicle exhaust system, comprising a catalytic converter 1;

[0044] A particulate trap 2 in communication with the catalytic converter 1;

[0045] A muffler module 3 in communication with the particulate trap 2;

[0046] A cleaning module arranged between the particulate trap 2 and an air conditioning module 5 of the vehicle;

[0047] The cleaning module is in communication with the particulate trap 2 and the air conditioning module 5 respectively, and is used to collect the condensed water of the air conditioning module 5 to clean the particulate trap 2;

[0048] The cleaning module comprises a water storage assembly 41, a high-pressure water pump 42 and a sprayer 43;

[0049] The water storage assembly 41 is in communication with the air conditioning module 5;

[0050] The high-pressure water pump 42 is in communication with the water storage assembly 41 and the sprayer 43 respectively;

[0051] The injector 43 is in communication with the particle trap 2 at one end away from the high-pressure water pump 42.

[0052] The catalytic converter 1 is also connected with an air filter 6, a turbocharger 7, an intercooler heat dissipation module 8 and an engine 9 connected in sequence, wherein the catalytic converter 1 is in communication with the engine 9 to constitute a complete vehicle exhaust system for air entering and exiting the vehicle, which is a prior art and will not be described in detail here.

[0053] The air conditioning module 5 mainly undertakes the function of adjusting the temperature and humidity of the air in the vehicle in the vehicle system, and the condensed water generated thereby can also be used as a water source for cleaning the particle trap 2.

[0054] In an alternative embodiment, the air conditioning module 5 is connected with the intercooler heat dissipation module 8, which is mainly responsible for cooling the high-temperature air pressurized by the turbocharger 2 to improve air density and optimize the combustion efficiency of the engine 4. The air conditioning module 5 is used to adjust the temperature and humidity of the air in the vehicle to provide a comfortable environment for passengers. The series arrangement of the two can make the entire thermal management system more coordinated and unified, and together achieve effective control of the air temperature at different parts. For example, in some cases, the heat dissipated by the intercooler heat dissipation module can be reasonably utilized to provide a certain preheating or auxiliary heating function for the air conditioning system, which helps to improve the heating efficiency of the air conditioning system, especially in cold weather, and also better manages the relationship between the engine intake air temperature and the vehicle interior environment temperature, ensuring that both are within a relatively ideal working temperature range.

[0055] In the cleaning module, the water storage assembly 41 is in communication with the air conditioning module 5 for collecting the condensed water generated by the air conditioning module 5. It contains a filtering unit inside, which can filter the condensed water to remove impurities and provide clean water source for cleaning the particle trap 2. The high-pressure water pump 42 is in communication with the water storage assembly 41 and the injector 43 respectively. Its function is to pressurize the water in the water storage assembly to obtain sufficient pressure so that it can effectively clean the particle trap 2 through the injector 43. One end of the injector 43 is in communication with the high-pressure water pump 42, and the other end is in communication with the particle trap 2. Its function is to spray the water pressurized by the high-pressure water pump into the particle trap 2, and to remove the difficult-to-burn substances and ash residues in the particle trap 2 by the impact force of the water flow.

[0056] By pressurizing the water through the high-pressure water pump 42 and spraying the high-pressure water into the particle trap 2 through the injector 43, a strong impact force can be generated to effectively remove the difficult-to-burn substances and ash residues remaining in the particle trap 2. This high-pressure cleaning method is more efficient than the traditional cleaning method, and can be directly cleaned on the vehicle without disassembling the particle trap 2, which simplifies the difficulty of cleaning and maintenance operation and reduces the downtime of the vehicle for cleaning.

[0057] The condensed water generated by the air conditioning module 5 is used as a cleaning water source, thereby achieving rational use of resources, eliminating the need to add additional cleaning water, reducing costs, and also complying with the concepts of environmental protection and energy conservation.

[0058] Furthermore, the cleaning module further includes a first solenoid valve 44 and a second solenoid valve 45;

[0059] The first solenoid valve 44 is disposed between the particulate trap 2 and the muffler module 3 and is in communication with the particulate trap 2 and the muffler module 3 respectively;

[0060] The second solenoid valve 45 is connected to the particulate trap 2 , and one end of the second solenoid valve 45 is connected to the outside.

[0061] First solenoid valve 44 is positioned between particulate filter 2 and muffler module 3, communicating with both. In normal exhaust mode, it remains open, ensuring a smooth exhaust flow from particulate filter 2 to muffler module 3. When particulate filter 2 is in cleaning mode, it remains closed, preventing cleaning water from entering muffler module 3. This ensures effective cleaning within particulate filter 2, avoiding water waste and unnecessary impact on muffler module 3.

[0062] Second solenoid valve 45 is connected to particulate trap 2, with one end open to the outside world. In normal mode, it remains closed, preventing foreign matter from entering particulate trap 2. When particulate trap 2 is in cleaning mode, it opens, providing a drainage channel for cleaned wastewater and impurities. This allows the cleaned wastewater and removed particulate matter to exit particulate trap 2 smoothly, keeping the interior of particulate trap 2 clean.

[0063] By controlling the opening and closing states of first solenoid valve 44 and second solenoid valve 45, optimal switching between exhaust and cleaning operations is achieved. During normal exhaust, this ensures smooth exhaust flow and maintains the proper functioning of the vehicle's exhaust system. During cleaning, the muffler module 3 is effectively isolated, improving cleaning efficiency and effectiveness while protecting it from interference during the cleaning process.

[0064] This arrangement ensures the normal operation of the particle trap 2 under different operating conditions. During normal use, it prevents foreign matter from contaminating the particle trap 2. During cleaning, it promptly discharges wastewater and impurities generated by cleaning, which facilitates the cleaning and maintenance of the particle trap 2, extends its service life, and ensures the stability of its filtering performance.

[0065] like Figures 1-2 As shown, further, the vehicle exhaust system further includes a control module 100;

[0066] The high-pressure water pump 42, the injector 43, the first electromagnetic valve 44, and the second electromagnetic valve 45 are electrically connected with the control module 100;

[0067] In the cleaning mode, the control module 100 controls the first electromagnetic valve 44 to be closed, the second electromagnetic valve 45 to be opened, and controls the high-pressure water pump 42 and the injector 43 to work, so as to clean the particulate filter 2;

[0068] In the normal mode, the control module 100 controls the first electromagnetic valve 44 to be opened, and controls the second electromagnetic valve 45 and the injector 43 to be closed, so as to ensure the smooth exhaust of the vehicle exhaust system.

[0069] The control module 100 is a control unit of the vehicle exhaust system, which can be connected with the vehicle on-board system and become a part of the vehicle on-board system, and is responsible for coordinating and controlling the work of each related component to ensure the normal operation of the system under different working conditions. It receives information from various sensors of the vehicle, such as the driving mileage sensor, the tail gas emission sensor, etc., and sends control instructions to the components such as the high-pressure water pump 42, the injector 43, the first electromagnetic valve 44, and the second electromagnetic valve 45 according to the preset logic and algorithm.

[0070] When the trigger conditions of the cleaning mode are met, such as the vehicle driving mileage ≥ 10,000 km, the vehicle on-board system can remind the user that cleaning is needed, which can be voice reminder or on-board screen information reminder, which will not be described in detail here, and then the user starts the cleaning mode through the vehicle on-board system control module 100. First, it controls the first electromagnetic valve 44 to be closed, cutting off the passage between the particulate filter 2 and the muffler module 3, preventing the cleaning water from flowing into the muffler module 3. Then, the second electromagnetic valve 45 is controlled to be opened to provide a discharge channel for the sewage and impurities after cleaning. Then, the high-pressure water pump 42 is controlled to work to pressurize the water in the water storage assembly 41. Finally, the injector 43 is controlled to work to spray the pressurized water into the particulate filter 2 for cleaning.

[0071] Through the above steps, efficient cleaning of the particulate filter 2 is realized. The sewage and impurities after cleaning can be smoothly discharged, the residual difficult-to-burn substances and ash and other blockages in the particulate filter 2 are removed, the filtering performance of the particulate filter 2 is restored, and it is ensured that the particulate filter 2 can continuously and effectively capture particulate matter in the exhaust gas, so that the vehicle exhaust emission meets the standard, and problems such as the increase of exhaust back pressure and the decrease of engine performance caused by the blockage of the particulate filter 2 are avoided.

[0072] In the normal mode, the control module 100 controls the first electromagnetic valve 44 to open according to the running state of the vehicle, to ensure that the exhaust system normally exhausts, and that the exhaust gas can smoothly flow from the particulate filter 2 to the muffler module 3. At the same time, the control module 100 controls the second electromagnetic valve 45 and the injector 43 to close, to prevent foreign matter from entering the particulate filter 2, and to avoid unnecessary water injection and the like during normal exhaust.

[0073] The normal exhaust function of the exhaust system is ensured, and the stable operation of the vehicle exhaust system is maintained. The particulate filter 2 is protected from pollution by foreign matter, and its good filtering performance is maintained, which is conducive to the vehicle exhaust emission meeting the standards, and also ensures the normal working performance of the engine.

[0074] Further, in an optional embodiment, the trigger condition of the cleaning mode can also be engine running time triggering, which triggers the cleaning mode when the engine running time reaches a certain length. For example, when the cumulative engine running time reaches 500 hours, regardless of the vehicle mileage, the user is reminded that the particulate filter 2 cleaning mode can be started. Because the engine running for a long time can cause the particulate filter 2 to accumulate particulate matter at a faster rate, it needs to be cleaned regularly to ensure its normal operation.

[0075] Further, the water storage assembly 41 includes a water storage tank and a filtering unit;

[0076] The water storage tank is in communication with the air conditioning module 5 and / or the vehicle radiator, and the water storage tank is in communication with the high-pressure water pump 42;

[0077] The filtering unit is arranged between the water storage tank and the air conditioning module 5 and / or the radiator.

[0078] The air conditioning module 5 generates condensate water during operation. The water storage tank is in communication with the air conditioning module, which can collect these condensate water as a water source for cleaning the particulate filter 2. For example, in daily use of the vehicle, a certain amount of condensate water will be generated after the air conditioning is turned on for a period of time. If these water is not utilized, it will be wasted. Through this communication mode, the condensate water is effectively collected, and becomes one of the stable water sources for the particulate filter 2 cleaning system.

[0079] The vehicle radiator also has water, and when the water storage tank is in communication with the radiator (whether to be communicated is selected according to actual design requirements), another potential water source is added. In some cases, such as insufficient condensate water generated by the air conditioning module 5 or the vehicle in special working conditions, the water in the radiator can be used as a supplementary water source to further ensure that there is enough water for cleaning the particulate filter 2.

[0080] The water in the air conditioner condensate water and the radiator water tank, which would otherwise be wasted, is used as the cleaning water for the particle trap 2. This reduces the dependence on external water resources and achieves resource recycling, in line with the concept of energy saving and environmental protection.

[0081] The filter unit is arranged between the water storage tank and the air conditioning module 5 and / or the radiator water tank. Its main function is to filter the condensate water generated by the air conditioning module 5 and / or the water in the radiator water tank. It can remove impurities such as dust, rust particles, and incompletely burned carbon particles from the water. Preventing impurities from entering the water storage tank and subsequent high-pressure water pump and injector components. Impurities can clog pipes, damage water pump impellers, or affect the spraying effect of the injector. By filtering, a clean water source is provided, which is conducive to improving the cleaning effect, prolonging the service life of related components, and ensuring the stable operation of the cleaning system.

[0082] The water storage tank is used to store the water filtered by the filter unit. It plays a buffering and storage role, ensuring that there is enough water supply when the particle trap 2 needs to be cleaned. The capacity of the water storage tank can be designed according to actual needs to meet the cleaning needs in different vehicle use scenarios. For example, in some vehicles with long driving range and particle trap 2 prone to clogging, a larger capacity water storage tank can ensure sufficient water for multiple cleanings. At the same time, the presence of the water storage tank makes the water supply of the cleaning system more stable and reliable.

[0083] Further, the water storage assembly 41 further comprises a liquid level sensor and a third electromagnetic valve;

[0084] The liquid level sensor is arranged inside the water storage tank, and the third electromagnetic valve is arranged between the water storage tank and the air conditioning module 5, and the liquid level sensor and the third electromagnetic valve are electrically connected with the control module 100.

[0085] The liquid level sensor is arranged inside the water storage tank, and the third electromagnetic valve is arranged between the water storage tank and the air conditioning module 5, and the liquid level sensor and the third electromagnetic valve are electrically connected with the control module 100.

[0086] The third electromagnetic valve is arranged between the water storage tank and the air conditioning module 5. Its main function is to control the water path between the water storage tank and the air conditioning module 5 and / or the radiator water tank. In some cases, such as when the water level in the water storage tank is too high, the third electromagnetic valve can be closed to prevent more water from entering the water storage tank, or when the vehicle is jolted and the water level is too high. Water backflow; Or when the water storage tank needs to be maintained or inspected, the third electromagnetic valve can be closed to isolate the water storage tank from the air conditioning module 5 and / or the radiator water tank.

[0087] Specifically, the working principle of controlling the third electromagnetic valve to open or close is that the water level in the water storage tank is continuously monitored in real time by the liquid level sensor. It senses the change of water level through specific sensing technology such as float type, capacitive type or ultrasonic type, and converts the water level information into an electrical signal.

[0088] The liquid level sensor transmits the acquired water level electrical signal to the control module 100. The control module 100 has pre-set relevant water level thresholds inside for judging whether the water level in the water storage tank is within the normal range. These thresholds may include upper and lower thresholds, corresponding to different operation logics respectively.

[0089] When the water level reaches or exceeds the upper threshold, the control module 100 determines that it is necessary to prevent condensed water from further entering the water storage tank, and at the same time closes the water path between the water storage tank and the air conditioning module 5 to prevent backflow. At this time, the control module 100 sends a closing instruction to the third electromagnetic valve.

[0090] After receiving the closing instruction from the control module 100, the electromagnetic mechanism inside the third electromagnetic valve drives the valve core to move, so that the valve is closed, thereby cutting off the water connection between the water storage tank and the air conditioning module 5. In this way, the possibility of backflow of condensed water from the water storage tank to the air conditioning module 5 and / or the heat dissipation water tank is prevented.

[0091] When the water level drops to the normal range, for example, below the upper threshold and above the lower threshold, the control module 100 may decide whether to reopen the third electromagnetic valve according to actual conditions such as vehicle operating state, cleaning demand, etc. If it needs to be reopened, the control module 100 will send an opening instruction to the third electromagnetic valve to make the valve return to the open state, allowing condensed water to flow from the air conditioning module 5 and / or the heat dissipation water tank into the water storage tank, but at the same time it will continue to monitor the water level through the liquid level sensor to ensure that the risk of backflow does not occur again.

[0092] Further, in an optional embodiment, the filter unit includes a coarse filter screen and a fine filter screen, the pore size of the coarse filter screen is larger than that of the fine filter screen, and the coarse filter screen and the fine filter screen are arranged in sequence along the direction from the air conditioning module 5 to the water storage tank.

[0093] The coarse filter screen can be made of stainless steel metal filter screen with larger mesh, for example, the pore size is between 0.5mm-1mm. Its main function is to intercept larger particulate impurities in the condensed water of the air conditioning module 5 and / or the heat dissipation water tank, such as possible existence of rust fragments, larger dust particles, etc.

[0094] The fine filter screen can be made of polyester fiber or polypropylene high molecular material. The mesh is small, and the pore size can be between 10μm-50μm. It can further filter out smaller impurities such as tiny dust particles, etc.

[0095] When the water passes through the filter screen, the impurity particles cannot pass through the filter screen because their particle size is larger than the diameter of the screen holes, and thus are intercepted on the surface of the filter screen, thereby ensuring that the water collected into the water storage tank is free of impurities and that no pollution source is brought in during cleaning.

[0096] Further, in an alternative embodiment, the filtering unit further comprises an activated carbon adsorption layer, which is arranged between the fine filter screen and the water storage tank.

[0097] The activated carbon adsorption layer is arranged between the fine filter screen and the water storage tank, and its main function is to further purify the water filtered by the fine filter screen. It can adsorb organic pollutants, odor substances and some dissolved impurities in the water.

[0098] When the particulate trap 2 is cleaned, if the sewage contains odor substances and organic pollutants, it may cause certain pollution to the environment. The treatment of the activated carbon adsorption layer can reduce such pollution, and also avoid the odor that may be generated during the cleaning process, thereby improving the comfort of the vehicle operating environment.

[0099] Further, in an alternative embodiment, the plurality of injectors 43 are arranged at different positions of the particulate trap 2, so that the coverage areas of the injectors 43 for spraying into the particulate trap 2 are different.

[0100] The plurality of injectors 43 are arranged at different positions of the particulate trap 2, so that the injectors 43 can spray into the particulate trap 2 from multiple angles and positions. Each of the injectors 43 has a specific coverage area, thereby achieving more comprehensive cleaning of the interior of the particulate trap 2.

[0101] Because the internal structure of the particulate trap 2 is complex, a single injector may not be able to cover all areas, resulting in incomplete cleaning of some parts. The plurality of injectors spraying from different positions can ensure that every corner of the interior of the particulate trap 2 is cleaned, effectively removing blockages such as difficult-to-burn substances and ash after combustion, etc. that are left in different parts, thereby improving the thoroughness and effectiveness of the cleaning.

[0102] Further, in an alternative embodiment, the plurality of injectors 43 are arranged at the same position on the particulate trap 2, and the angles of the injectors 43 towards the interior of the particulate trap 2 are different, so that the angles of the injectors 43 for spraying into the interior of the particulate trap 2 are different.

[0103] The plurality of injectors 43 are arranged at the same position on the particulate trap 2, but have different spraying angles. Their function is to spray into the interior of the particulate trap 2 from different angles at the same position, so as to increase the cleaning coverage range and cleaning intensity of a specific area in the interior of the particulate trap 2.

[0104] For some local areas inside the particle trap 2, the structure is complex and easy to leave residual blockage. A single angle of injection may not be able to thoroughly clean. Through multiple different angle injectors, multi-angle flushing can be performed on these local areas, enhancing the cleaning effect of these parts and more effectively removing residual blockage.

[0105] The second aspect of the embodiments of the present application provides a vehicle, and the vehicle comprises the vehicle exhaust system provided in the first aspect.

[0106] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle exhaust system, characterized by, The vehicle exhaust system comprises: a catalytic converter (1); a particle trap (2) in communication with the catalytic converter (1); a muffler module (3) in communication with the particle trap (2); a cleaning module arranged between the particle trap (2) and an air conditioning module (5) of the vehicle; the cleaning module is in communication with the particle trap (2) and the air conditioning module (5) respectively, for collecting condensed water of the air conditioning module (5) to clean the particle trap (2); the cleaning module comprises a water storage assembly (41), a high-pressure water pump (42) and a sprayer (43); the water storage assembly (41) is in communication with the air conditioning module (5); the high-pressure water pump (42) is in communication with the water storage assembly (41) and the sprayer (43) respectively; an end of the sprayer (43) away from the high-pressure water pump (42) is in communication with the particle trap (2).

2. The vehicle exhaust system of claim 1, wherein, The cleaning module further comprises a first electromagnetic valve (44) and a second electromagnetic valve (45); the first electromagnetic valve (44) is arranged between the particle trap (2) and the muffler module (3), and is in communication with the particle trap (2) and the muffler module (3) respectively; the second electromagnetic valve (45) is communicated on the particle trap (2), and an end of the second electromagnetic valve (45) is in communication with the outside.

3. The vehicle exhaust system of claim 2, wherein, The vehicle exhaust system further comprises a control module (100); the high-pressure water pump (42), the sprayer (43), the first electromagnetic valve (44) and the second electromagnetic valve (45) are electrically connected with the control module (100); in the cleaning mode, the control module (100) controls the first electromagnetic valve (44) to be closed, the second electromagnetic valve (45) to be opened, and the high-pressure water pump (42) and the sprayer (43) to work, so as to clean the particle trap (2); in the normal mode, the control module (100) controls the first electromagnetic valve (44) to be opened, and the second electromagnetic valve (45) and the sprayer (43) to be closed, so as to ensure that the vehicle exhaust system exhausts smoothly.

4. The vehicle exhaust system of claim 1, wherein, The water storage assembly (41) comprises a water storage tank and a filtering unit; the water storage tank is in communication with the air conditioning module (5) and / or a radiator water tank of the vehicle, and is in communication with the high-pressure water pump (42); the filtering unit is arranged between the water storage tank and the air conditioning module (5) and / or the radiator water tank.

5. The vehicle exhaust system of claim 4, wherein, The water storage assembly (41) further comprises a liquid level sensor and a third electromagnetic valve; the liquid level sensor is arranged inside the water storage tank, and the third electromagnetic valve is arranged between the water storage tank and the air conditioning module (5).

6. The vehicle exhaust system of claim 4, wherein, The filtering unit comprises a coarse filter screen and a fine filter screen; the pore size of the coarse filter screen is larger than that of the fine filter screen, and the coarse filter screen and the fine filter screen are arranged in sequence along the direction from the air conditioning module (5) to the water storage tank.

7. The vehicle exhaust system of claim 6, wherein, The filtering unit further comprises an activated carbon adsorption layer arranged between the fine filter screen and the water storage tank.

8. The vehicle exhaust system of claim 1, wherein, The ejectors (43) are provided in plurality, each of the ejectors (43) being communicated at different positions of the particle trap (2) so that the coverage area of each of the ejectors (43) for ejecting into the interior of the particle trap (2) is different.

9. The vehicle exhaust system of claim 1, wherein, The ejectors (43) are provided in plurality, each of the ejectors (43) being communicated at the same position on the particle trap (2), each of the ejectors (43) having a different angle towards the interior of the particle trap (2) so that the angle of the ejectors (43) for ejecting into the interior of the particle trap (2) is different.

10. A vehicle characterized by comprising: The vehicle comprises a vehicle exhaust system according to any one of claims 1 to 9.

Images