Cleaning mechanism, vehicle exhaust system, and vehicle

Abstract

The application relates to the technical field of vehicle chassis, and provides a cleaning mechanism, a vehicle exhaust system and a vehicle. The cleaning mechanism is used for cleaning a waterproof valve in an exhaust pipe, and comprises a water storage part arranged on a vehicle body, a fluid driving device, and a sprayer arranged on the exhaust pipe; the sprayer is arranged upstream of the waterproof valve along the flow direction of airflow in the exhaust pipe; the fluid driving device is connected with the water storage part and the sprayer respectively, and the fluid driving device can drive liquid in the water storage part to spray towards the waterproof valve through the sprayer. The cleaning mechanism can remove impurities adhered to the waterproof valve by using high-pressure water flow sprayed by the sprayer, and waste liquid, impurities and the like after cleaning can be discharged together with exhaust gas, so that the waterproof valve can maintain good sealing performance and functions, water seepage, exhaust system pressure imbalance and structural damage and the like caused by poor sealing of the waterproof valve can be prevented, and the cleaning mechanism has good use effect.

Description

Technical Field

[0001] This application relates to the field of vehicle chassis technology, and in particular to a cleaning mechanism. This application also relates to a vehicle exhaust system equipped with the aforementioned cleaning mechanism, and a vehicle equipped with the aforementioned exhaust system. Background Technology

[0002] The muffler waterproof valve assembly is a critical component of a vehicle's exhaust system, especially in hybrid models. In electric mode, when the engine is not running, it effectively prevents water from entering the engine through the exhaust system and causing damage, especially when the vehicle is wading through water. However, in muddy or wet conditions, impurities in the water (such as sand and gravel) can easily enter the waterproof valve assembly and accumulate on the sealing surface or in the gaps between moving parts, leading to valve failure. Poor sealing will cause problems such as water leakage and exhaust system pressure imbalance. Long-term wear from sand and gravel can also damage the structural integrity of the waterproof valve, threatening the overall NVH performance and durability of the vehicle. Utility Model Content

[0003] In view of this, this application aims to provide a cleaning mechanism capable of cleaning a waterproof valve in an exhaust pipe.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] A cleaning mechanism for cleaning a waterproof valve in an exhaust pipe includes a water reservoir and a fluid drive device on the vehicle body, and an injector on the exhaust pipe.

[0006] The injector is positioned upstream of the waterproof valve, following the direction of airflow within the exhaust pipe.

[0007] The fluid drive device is connected to the water storage section and the ejector respectively, and the fluid drive device can drive the liquid in the water storage section to be sprayed towards the waterproof valve through the ejector.

[0008] Furthermore, it also includes a control unit connected to the fluid drive device, which is capable of controlling the start and stop of the fluid drive device.

[0009] Furthermore, it also includes a pressure detection unit connected to the control unit. Along the flow direction of the airflow in the exhaust pipe, the pressure detection unit is arranged upstream of the muffler to detect the exhaust pressure in the exhaust pipe. Based on the exhaust pressure information detected by the pressure detection unit, the control unit can control the start and stop of the fluid drive device.

[0010] Furthermore, it also includes a vibration detection unit disposed on the waterproof valve, the vibration detection unit being connected to the control unit; receiving the vibration information detected by the vibration detection unit, the control unit is able to control the start and stop of the fluid drive device.

[0011] Furthermore, the water storage unit is connected to the drain pipe in the vehicle's air conditioning system via a bypass pipe, and the connection point between the drain pipe and the bypass pipe is at a height higher than the water storage unit in the vertical direction of the vehicle.

[0012] Furthermore, a control valve is provided on the bypass pipe, and a water level detection unit is provided in the water storage section; the control valve and the water level detection unit are respectively connected to the control unit, receiving the water level information detected by the water level detection unit, and the control unit controls the opening and closing of the control valve.

[0013] Furthermore, a water pressure detection unit is provided on the pipeline connecting the fluid drive device and the ejector, and the water pressure detection unit is connected to the control unit; based on the water pressure information detected by the water pressure detection unit, the control unit controls the output power of the fluid drive device.

[0014] Furthermore, the spray angle of the spray nozzle in the injector is adjustable.

[0015] Compared with related technologies, this application has the following advantages:

[0016] (1) The cleaning mechanism described in this application, through a water storage unit and a fluid drive device installed on the vehicle body, and an injector installed on the exhaust pipe, and the injector is arranged upstream of the waterproof valve, so that the fluid drive device can drive the liquid in the water storage unit to be sprayed onto the waterproof valve through the injector. In this way, the high-pressure water flow sprayed by the injector can remove the impurities attached to the waterproof valve, and the waste liquid and impurities after cleaning can be discharged together with the exhaust gas, thereby enabling the waterproof valve to maintain good sealing performance and function, preventing problems such as water leakage, pressure imbalance of the exhaust system and structural damage caused by poor sealing, and having a very good use effect.

[0017] (2) Setting up a control unit connected to the fluid drive device is beneficial to automating the cleaning process of the waterproof valve, and also helps to realize multiple modes such as regular cleaning, on-demand cleaning and cleaning under specific working conditions.

[0018] (3) By setting up a pressure detection unit connected to the control unit and arranging the pressure detection unit upstream of the muffler, the exhaust pressure in the exhaust pipe can be better sensed, so that the cleaning of the waterproof valve can be started in the early or middle stage of the waterproof valve blockage, preventing the waterproof valve blockage problem from worsening.

[0019] (4) By installing a vibration detection unit on the waterproof valve, it is beneficial to capture abnormal vibration signals caused by the accumulation of impurities on the sealing surface in real time, so that potential problems can be detected earlier and the waterproof valve can be cleaned in time.

[0020] (5) The water storage unit is connected to the drain pipe of the vehicle's air conditioning system via a bypass pipe, allowing the condensate generated by the vehicle's air conditioning system to be collected in the water storage unit as a cleaning water source, reducing the need for additional water storage. Furthermore, the bypass pipe's connection point is higher than the water storage unit, allowing the air conditioning condensate to flow naturally into the water storage unit under gravity, eliminating the need for an additional pump. This design is simple, energy-efficient, and reliable. Moreover, the air conditioning condensate is essentially distilled water, free of minerals, and less prone to scale buildup, resulting in relatively good water quality that is more beneficial to the cleaning mechanism and the waterproof valve itself.

[0021] (6) By setting a control valve on the bypass pipe and a water level detection unit in the water storage section, and connecting the control valve and the water level detection unit to the control unit respectively, it is convenient to monitor the water volume in the water storage section in real time. The control unit automatically switches the control valve according to the detected water level information to ensure that the water storage section is always maintained in a safe and usable water level range.

[0022] (7) A water pressure detection unit is installed on the pipeline connecting the fluid drive device and the ejector, and the water pressure detection unit is connected to the control unit. In this way, the control unit can control the output power of the fluid drive device according to the water pressure detected by the water pressure detection unit, so that the ejector spray pressure is stable within the preset effective range, ensuring the cleaning effect of the waterproof valve, and avoiding problems such as unsatisfactory cleaning effect due to low water pressure or damage to the waterproof valve or pipeline due to high water pressure.

[0023] (8) The spray angle of the spray nozzle in the injector is adjustable, so that the water flow can better rinse the key areas and reduce the cleaning blind spots, thereby improving the cleaning coverage and cleaning effect.

[0024] Another object of this application is to provide a vehicle exhaust system in which a cleaning mechanism as described above is applied.

[0025] The vehicle exhaust system described in this application, by employing the aforementioned cleaning mechanism, can clean impurities on the waterproof valve, thereby maintaining good sealing performance and function of the waterproof valve, extending its service life, and thus improving the reliability of the exhaust system.

[0026] Another object of this application is to provide a vehicle equipped with the aforementioned vehicle exhaust system.

[0027] The vehicle described in this application, by employing the aforementioned vehicle exhaust system, can clean impurities on the waterproof valve, thereby maintaining good sealing performance and function of the waterproof valve, extending its service life, and thus improving the reliability of the exhaust system and enhancing the vehicle's performance. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a structural diagram illustrating the application state of the cleaning mechanism described in the embodiments of this application;

[0030] Figure 2 This is an enlarged view of the application state of the cleaning mechanism described in the embodiments of this application;

[0031] Figure 3 This is a schematic diagram of the waterproof valve assembly described in the embodiments of this application;

[0032] Figure 4 This is a schematic diagram of the exhaust system with a cleaning mechanism described in the embodiments of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Muffler; 10. Air Filter; 20. Turbocharger; 30. Intercooler Radiator Module; 40. Engine Module; 50. Processing Module; 60. Muffler Module; 70. Air Conditioning Module; 80. Cleaning Mechanism; 100. Exhaust Pipe; 11. First Inlet Pipe; 22. Second Inlet Pipe; 33. Bypass Pipe; 61. Waterproof Valve Assembly;

[0035] 221. Water pressure detection unit; 331. Control valve; 600. Pressure detection unit; 601. Waterproof valve; 602. Actuator; 6010. Vibration detection unit; 6011. Valve stem; 801. Water storage unit; 803. Fluid drive device; 804. Ejector; 8011. Water level detection unit; 8041. Water inlet connector. Detailed Implementation

[0036] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0038] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0040] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0042] An embodiment of the first aspect of this application provides a cleaning mechanism capable of cleaning a waterproof valve in an exhaust pipe.

[0043] In related technologies, a waterproof valve assembly is usually installed on the exhaust pipe in the vehicle exhaust system. As one of the key components of the vehicle exhaust system, the waterproof valve assembly is used to prevent water from outside the vehicle from entering the exhaust system, thereby protecting the engine and exhaust system.

[0044] Taking hybrid vehicles as an example, when a hybrid vehicle switches to pure electric mode, the engine is off, creating a relatively static environment inside the exhaust system. When the vehicle is wading through water, especially when the water depth exceeds the height of the exhaust pipe, the lack of back pressure from exhaust gases allows water to easily flow back into the engine through the exhaust tailpipe. The waterproof valve in the waterproof valve assembly, acting as a barrier to prevent backflow, must form a reliable seal to prevent water from directly entering the engine combustion chamber. If the waterproof valve fails, water entering the engine can cause serious mechanical damage such as bent pistons and connecting rods, and cylinder block rupture, potentially leading to vehicle breakdowns and accidents.

[0045] In muddy conditions, the complexity of the problem is further exacerbated. Muddy roads typically contain a mixture of impurities such as sand, gravel, and mud, which have high hardness and abrasiveness. When vehicles drive through muddy sections, the water carrying these impurities impacts the waterproof valve at high speed, and some sand may enter the internal structure through the tiny gap between the waterproof valve and the exhaust pipe wall. Because the sealing surface of the waterproof valve uses a precision fit design, once sand becomes embedded between the sealing rubber ring and the metal surface of the waterproof valve, it will disrupt the original seal, leading to leakage. Simultaneously, during long-term operation, the repeated compression and friction of sand on moving parts (such as the valve stem shaft and hinge bushing) accelerates surface wear, gradually widening the fit clearance and causing malfunctions such as valve jamming, abnormal return, and damage to the structural integrity.

[0046] Seal failure not only prevents water from draining properly from inside the muffler, but also disrupts the pressure balance of the exhaust system. Water seeping into the muffler alters the air medium characteristics within the acoustic chamber, significantly reducing its noise reduction effect and increasing vehicle noise, severely impacting ride comfort and overall NVH performance. Furthermore, the combined effect of water and gravel accelerates corrosion of the muffler and exhaust pipe, shortening the overall lifespan of the exhaust system.

[0047] In view of this, in order to overcome the shortcomings of the related technology, the cleaning mechanism in this embodiment combines... Figures 1 to 4 As shown, the overall design includes a water storage unit 801, a fluid drive device 803, and an injector 804. The water storage unit 801 and the fluid drive device 803 are mounted on the vehicle body, and the injector 804 is mounted on the exhaust pipe 100.

[0048] Furthermore, along the flow direction of the airflow within the exhaust pipe 100, the injector 804 is positioned upstream of the waterproof valve 601. The fluid drive device 803 is connected to the water storage section 801 and the injector 804 respectively, and the fluid drive device 803 can drive the liquid in the water storage section 801 to be sprayed towards the waterproof valve 601 via the injector 804.

[0049] Therefore, through the water storage unit 801 and fluid drive device 803 installed on the vehicle body, and the injector 804 installed on the exhaust pipe 100, with the injector 804 positioned upstream of the waterproof valve 601, the fluid drive device 803 can drive the liquid in the water storage unit 801 to be sprayed onto the waterproof valve 601 through the injector 804. This high-pressure water jet from the injector 804 removes impurities adhering to the waterproof valve 601, helping to restore its normal sealing function and maintaining good sealing performance and function. This prevents problems such as water leakage, exhaust system pressure imbalance, or structural damage caused by poor sealing. Furthermore, the waste liquid and impurities after cleaning can be discharged along with the exhaust gas.

[0050] Based on the above overview, specifically, the waterproof valve 601 is generally located at the end of the exhaust pipe 100, downstream of the muffler 1. The water storage section 801 can be, for example, a water tank or reservoir, and the fluid drive device 803 can be, for example, an electric water pump, used to pressurize the water in the water storage section 801 and deliver it to the injector 804 for spraying. The water storage section 801 and the fluid drive device 803 can be arranged, for example, on the vehicle frame or on the lower surface of the floor. It is also worth noting that the water in the water storage section 801 can be manually added, and the amount added can be adjusted according to actual needs. Furthermore, when the water level in the water storage section 801 is insufficient, it can be replenished manually or by using other water sources.

[0051] Furthermore, in its specific arrangement, the injector 804 can be installed in a mounting hole on the exhaust pipe 100, with its nozzle facing the waterproof valve 601. Moreover, the injector 804 is positioned upstream of the waterproof valve 601, following the airflow direction within the exhaust pipe 100. This ensures that the direction of the water flow from the injector 804 is essentially the same as the airflow direction within the exhaust pipe 100, allowing wastewater or impurities from cleaning the waterproof valve to be smoothly discharged along the airflow direction within the exhaust pipe 100.

[0052] Continue to combine Figures 1 to 4 As shown, in some exemplary embodiments, the cleaning mechanism of this application further includes, for example, a control unit connected to the fluid drive device 803, which can control the start and stop of the fluid drive device 803. In specific implementations, the control unit employs existing mature technologies, such as a PLC controller (Programmable Logic Controller) or a microprocessor. In this case, utilizing the control unit facilitates the automation of the cleaning process of the waterproof valve 601 and also helps to achieve various modes such as periodic cleaning, on-demand cleaning, and cleaning under specific working conditions.

[0053] Specifically, refer to Figure 4 As shown, the exhaust system includes an air filter 10, a turbocharger 20, an intercooler module 30, an engine module 40, an aftertreatment module 50, a muffler module 60, an air conditioning module 70, a cleaning mechanism 80, and a control unit.

[0054] The air filter 10 is installed in the engine's intake passage and is used to filter the air. The turbocharger 20 compresses the filtered air, which then enters the engine module 40 for combustion via the intercooler module 30. The exhaust gas after combustion flows sequentially through the aftertreatment module 50 for purification and through the muffler 1 in the muffler module 60 for noise reduction. The waterproof valve 601, as a component of the muffler module 60, can be located at the front or rear of the muffler 1. The air conditioning module 70 is an existing component of the vehicle. The condensate generated during the air conditioning cooling process can be stored in the water reservoir 801, which can provide some of the cleaning medium for cleaning the waterproof valve 601.

[0055] Reference Figure 2 and Figure 3 As shown, the waterproof valve assembly 61 comprises an annular valve body, a waterproof valve 601, and an actuator 602. The two ends of the valve body are welded to two sections of the exhaust pipe. The actuator 602 is kinetically connected to the valve stem 6011 on the waterproof valve 601. The waterproof valve 601 is plate-shaped and can rotate around the axis of the valve stem 6011 under the influence of the actuator 602, between an open and closed position, to open or close the passage within the exhaust pipe 100.

[0056] When the waterproof valve 601 is closed, its edge fits tightly against the inner wall of the exhaust pipe 100, forming a reliable sealing surface and effectively preventing exhaust gas leakage. When the waterproof valve 601 is open, it rotates around the axis of the valve stem 6011, creating a smooth exhaust passage. Specifically, the actuator 602 ensures precise operation of the waterproof valve 601 within the range of 0° to 90°, i.e., from the closed position to the open position. After drainage is complete, the actuator 602 automatically resets, causing the waterproof valve 601 to re-close the exhaust pipe 100, restoring the muffler 1 to its normal operating state.

[0057] It should be noted that the waterproof valve assembly 61 in this application uses an existing, mature product. The connection structure between the waterproof valve assembly and the exhaust pipe 100 can also refer to the structure in the prior art.

[0058] Reference Figure 4As shown, in some exemplary embodiments, the cleaning mechanism of this application may further include, for example, a pressure detection unit 600 connected to the control unit. Along the flow direction of the airflow within the exhaust pipe 100, the pressure detection unit 600 is arranged upstream of the muffler 1 to detect the exhaust pressure within the exhaust pipe 100. Furthermore, based on the exhaust pressure information detected by the pressure detection unit 600, the control unit can control the start and stop of the fluid drive device 803.

[0059] Since an abnormal increase in exhaust pressure is a direct and critical signal of blockage of the waterproof valve 601 or obstruction of the exhaust system, a pressure detection unit 600 connected to the control unit is used and positioned upstream of the muffler 1. This allows for better detection of the exhaust pressure within the exhaust pipe 100, enabling timely activation of the cleaning process for the waterproof valve 601 in the early or middle stages of blockage, thus preventing the blockage problem from worsening.

[0060] In practice, the pressure detection unit 600 may employ a pressure sensor, which is located upstream of the muffler 1 and connected to the control unit. Based on the exhaust pressure signal collected by the pressure sensor within the exhaust pipe 100, the controller executes the start-stop operation of the fluid drive device 803.

[0061] When the exhaust pressure is lower than the preset threshold, it is determined that the waterproof valve 601 is not tightly closed, and there is a blockage of impurities such as sand and gravel between the waterproof valve 601 and the inner wall of the exhaust pipe 100. At this time, the controller controls the fluid drive device 803 to open, so that the water in the water storage section 801 is sprayed through the ejector 804 onto the inner wall and sealing surface of the waterproof valve 601, etc., to perform targeted cleaning of the waterproof valve 601. The pressure sensor detects the exhaust pressure in the exhaust pipe 100 in real time. After cleaning, when the exhaust pressure returns to the preset threshold, it is determined that the sealing of the waterproof valve 601 has been restored. At this time, the controller controls the fluid drive device 803 to stop, that is, to stop the cleaning of the waterproof valve 601.

[0062] In some exemplary embodiments, the cleaning mechanism of this application may further include a vibration detection unit 6010 disposed on the waterproof valve 601, which is connected to the control unit. Received from the vibration information detected by the vibration detection unit 6010, the control unit can control the start and stop of the fluid drive device 803. In this case, the vibration sensor can capture abnormal vibration signals caused by the accumulation of impurities on the sealing surface, thereby enabling earlier detection of potential problems and timely triggering of the cleaning of the waterproof valve 601.

[0063] In a specific implementation, the vibration detection unit 6010 may use a vibration sensor, which is located inside the waterproof valve 601. The vibration sensor is fixed inside the waterproof valve 601, for example, by a magnetic structure. This magnetic installation method not only simplifies the assembly process and avoids drilling holes in the valve body to damage the structural strength, but also allows the vibration sensor to be quickly disassembled and replaced, which is convenient for later maintenance.

[0064] Under normal operating conditions, the rotational vibration of the waterproof valve 601 exhibits stable periodic characteristics. When impurities such as sand and gravel enter the sealing surface or create movement gaps, it can lead to uneven rotational inertia and sudden changes in frictional resistance, resulting in increased vibration amplitude and abnormal frequency. The vibration data collected in real time by the vibration detection unit 6010 is transmitted to the control unit. When the vibration amplitude or frequency exceeds a preset threshold, the control unit triggers a cleaning program, activating the fluid drive device 803 to clean the waterproof valve 601.

[0065] Furthermore, it's worth noting that the cooperation between the vibration detection unit 6010 and the pressure detection unit 600 facilitates the establishment of a dynamic threshold system. When the detected value exceeds the preset threshold, the control unit activates the cleaning program to clean the waterproof valve 601. After cleaning, when re-checking the sealing parameters, the vibration amplitude detected by the vibration detection unit 6010 and the exhaust pressure detected by the pressure detection unit 600 serve as dual indicators for verification. If any parameter exceeds the allowable range, the control unit will initiate a secondary cleaning after a certain period, and the injection pressure can be increased synchronously until the standard sealing performance is restored. This forms a closed-loop control system of "detection-execution-verification".

[0066] In some exemplary embodiments, the water storage unit 801 may be connected to the drain pipe in the vehicle air conditioning system via a bypass pipe 33, and the connection port of the drain pipe and the bypass pipe 33 is at a height higher than the water storage unit 801 in the vertical direction of the vehicle.

[0067] This design allows condensate from the vehicle's air conditioning system to be collected in the water reservoir 801 as a cleaning water source, reducing the need for additional water storage. Furthermore, positioning the bypass pipe 33 above the water reservoir 801 allows the condensate to flow naturally into the reservoir under gravity, eliminating the need for an additional pump. This design is simple, energy-efficient, and reliable. Moreover, the air conditioning condensate is essentially distilled water, free of minerals, and less prone to scale buildup, resulting in relatively good water quality that is more beneficial for the cleaning mechanism and the waterproof valve 601 itself.

[0068] In a specific implementation, for example, a water inlet connector 8041 is provided on the injector 804. The water storage unit 801 is connected to the fluid drive device 803 via a first inlet pipe 11, and the water inlet connector 8041 is connected to the fluid drive device 803 via a second inlet pipe 22. Water in the water storage unit 801 flows through the first inlet pipe 11, the water pump, and the second inlet pipe 22, and is then sprayed out through the injector 804. The drain pipe of the air conditioning system is connected to the water storage unit 801 via a bypass pipe 33. In this way, the condensate generated in the air conditioning system can flow into the water storage unit 801 through the bypass pipe 33, which facilitates replenishment of the water storage unit 801 and promotes energy recovery and utilization.

[0069] In some exemplary embodiments, a control valve 331 is provided on the bypass pipe 33, and a water level detection unit 8011 for detecting water level is provided in the water storage section 801. The control valve 331 and the water level detection unit 8011 are respectively connected to a control unit. The control unit receives water level information detected by the water level detection unit 8011 and controls the opening and closing of the control valve 331. That is, the control unit executes the opening and closing action of the control valve 331 based on the water level information detected by the water level detection unit 8011.

[0070] In practical implementation, the control valve 331 can be, for example, a one-way valve, which is unidirectionally open in the direction of the drain pipe flowing towards the water storage section, so that the liquid in the bypass pipe 33 can only flow to the water storage section 801. In addition, the water level detection section 8011 can be, for example, a water level sensor, which is a mature technology and has high reliability.

[0071] At this time, the control valve 331 installed on the bypass pipe 33 and the water level detection unit 8011 installed in the water storage section 801 are connected to the control unit. When the detected water level is too high, the control valve 331 is closed to prevent excessive water overflow from the water storage section 801; when the detected water level is too low, the control valve 331 is opened to replenish water, ensuring that the water storage section 801 has sufficient water for cleaning. This facilitates real-time monitoring of the water volume in the water storage section 801. Based on the detected water level information, the control unit automatically opens and closes the control valve 331 to ensure that the water storage section 801 is always maintained within a safe and usable water level range, thereby improving the reliability of the system.

[0072] In some exemplary embodiments, for example, a water pressure detection unit 221 for detecting water pressure is provided on the pipeline connecting the fluid drive device 803 and the ejector 804, that is, on the second inlet pipe 22. The water pressure detection unit 221 is connected to the control unit. Based on the water pressure information detected by the water pressure detection unit 221, the control unit controls the output power of the fluid drive device 803.

[0073] Based on the water pressure detected by the water pressure detection unit 221, the control unit controls the output power of the fluid drive device 803, so that the spray pressure of the ejector 804 is stabilized within the preset effective range, ensuring the cleaning effect of the waterproof valve 601, and avoiding problems such as unsatisfactory cleaning effect due to low water pressure or damage to the waterproof valve 601 or pipeline due to high water pressure.

[0074] In practical implementation, the water pressure detection unit 221 can, for example, be a pressure sensor. Furthermore, in terms of pipeline layout, the water pressure detection unit 221 can, for example, adopt a direct-insertion installation structure, being fixedly connected to the second inlet pipe 22 via a threaded interface. The installation position of the water pressure detection unit 221, for example, is 20cm-40cm from the inlet end of the injector 804, specifically set to 20cm, 25cm, 30cm, 35cm, or 40cm. This distance not only avoids interference from instantaneous pressure pulsations of the injector on the detection results but also ensures that pressure data is promptly fed back to the control unit.

[0075] It should be noted that the pressure detection unit 600, vibration detection unit 6010, control valve 331, and water level detection unit 8011 mentioned above all use existing mature products. The control unit can also be implemented using existing mature programming technology; it can be a separate module or integrated into the vehicle's controller. Furthermore, the connection methods between the pressure detection unit 600, vibration detection unit 6010, control valve 331, and water level detection unit 8011 and the control unit can be referred to existing technologies.

[0076] In some exemplary embodiments, for example, the spray angle of the spray nozzle in the ejector 804 is adjustable. Specifically, the ejector 804 can be an existing, mature product. By making the spray nozzle angle adjustable, the water flow can better impact critical areas, reducing blind spots in cleaning, thereby improving cleaning coverage and cleaning effectiveness.

[0077] In terms of specific arrangement, for example, the injector 804 is installed 15-20cm upstream of the waterproof valve 601, and the injector adopts a fan-shaped atomizing nozzle structure with a spray angle designed to be 45° downwards to cover the entire surface of the waterproof valve. The nozzle has a built-in guide groove to ensure that the high-pressure water flow forms a uniform and fine water curtain at a preset speed, which can effectively impact and remove impurities such as sand and mud adhering to the surface of the waterproof valve and the sealing gap.

[0078] It is worth noting that, regarding the cleaning mechanism of this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 4As shown, it includes a water storage unit 801 and a fluid drive device 803 installed on the vehicle body, and an injector 804 installed at the end of the exhaust pipe 100. Along the flow direction of the airflow in the exhaust pipe 100, the injector 804 is arranged upstream of the waterproof valve 601. The fluid drive device 803 is connected to the water storage unit 801 and the injector 804 respectively, and the fluid drive device 803 can drive the liquid in the water storage unit 801 to be sprayed onto the waterproof valve 601 through the injector 804.

[0079] The cleaning mechanism also includes a control unit connected to the fluid drive device 803, which is used to control the start and stop of the fluid drive device 803.

[0080] The cleaning mechanism also includes a pressure detection unit 600 connected to the control unit. Located upstream of the muffler 1 along the airflow direction within the exhaust pipe 100, the pressure detection unit 600 detects the exhaust pressure within the exhaust pipe 100. Based on the exhaust pressure information detected by the pressure detection unit 600, the control unit can control the start and stop of the fluid drive device 803.

[0081] The cleaning mechanism also includes a vibration detection unit 6010 mounted on the waterproof valve 601, which is connected to the control unit. Based on the vibration information detected by the vibration detection unit 6010, the control unit can control the start and stop of the fluid drive device 803.

[0082] The water storage unit 801 is connected to the drain pipe of the vehicle's air conditioning system via a bypass pipe 33, and the connection point between the drain pipe and the bypass pipe 33 is higher than the water storage unit 801 in the vertical direction of the vehicle. In addition to the above configuration, a control valve 331 is also provided on the bypass pipe 33, and a water level detection unit 8011 for detecting water level is provided inside the water storage unit 801. The control valve 331 and the water level detection unit 8011 are respectively connected to the control unit. Based on the water level information detected by the water level detection unit 8011, the control unit controls the opening and closing of the control valve 331.

[0083] A water pressure detection unit 221 is also provided on the pipeline connecting the fluid drive device 803 and the ejector 804. The water pressure detection unit 221 is connected to the control unit. Based on the water pressure information detected by the water pressure detection unit 221, the control unit controls the output power of the fluid drive device 803.

[0084] The spray angle of the nozzle in the injector 804 is adjustable. This allows for adjustment of the water flow direction, enabling better rinsing of critical areas, reducing blind spots, and thus improving cleaning coverage and effectiveness. In practical implementation...

[0085] In the above preferred embodiments, the specific configuration and arrangement of the water storage unit 801, fluid drive device 803, ejector 804, control unit, pressure detection unit 600, vibration detection unit 6010, and water pressure detection unit 221 can still be described in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the water storage unit 801, fluid drive device 803, ejector 804, control unit, pressure detection unit 600, vibration detection unit 6010, and water pressure detection unit 221 can also be found in the above exemplary embodiments.

[0086] The cleaning mechanism of this embodiment adopts the above design. The fluid driving device 803 drives the liquid in the water storage section 801 to be sprayed onto the waterproof valve 601 through the ejector 804. In this way, the high-pressure water jet sprayed by the ejector 804 can remove impurities attached to the waterproof valve 601, thereby cleaning the waterproof valve 601. The waste liquid and impurities after cleaning can be discharged together with the exhaust gas, so that the waterproof valve 601 maintains good sealing performance and function, preventing problems such as water leakage, pressure imbalance of the exhaust system and structural damage caused by poor sealing. At the same time, it has a very good performance.

[0087] An embodiment of the second aspect of this application provides a vehicle exhaust system that reuses the cleaning mechanism 80 as described above. See details... Figure 4 As shown, the cleaning mechanism 80 is arranged upstream of the waterproof valve 601, and the water storage part 801 in the cleaning mechanism 80 is connected to the drain pipe in the air conditioning module 70 through the bypass pipe 33.

[0088] The vehicle exhaust system of this embodiment, by employing the aforementioned cleaning mechanism, can clean impurities on the waterproof valve 601, thereby maintaining good sealing performance and function of the waterproof valve 601, extending its service life, and thus improving the reliability of the exhaust system.

[0089] An embodiment of the third aspect of this application provides a vehicle equipped with the aforementioned vehicle exhaust system.

[0090] In this embodiment, the vehicle exhaust system described above can clean impurities on the waterproof valve 601, thereby maintaining good sealing performance and function of the waterproof valve 601, extending its service life, and thus improving the reliability of the exhaust system and enhancing the vehicle's performance.

[0091] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A cleaning mechanism for cleaning a waterproof valve (601) in an exhaust pipe (100), characterized in that: It includes a water storage unit (801) and a fluid drive device (803) provided on the vehicle body, and an injector (804) provided on the exhaust pipe (100); Along the direction of airflow within the exhaust pipe (100), the injector (804) is positioned upstream of the waterproof valve (601); The fluid drive device (803) is connected to the water storage section (801) and the ejector (804) respectively, and the fluid drive device (803) can drive the liquid in the water storage section (801) to be sprayed onto the waterproof valve (601) through the ejector (804).

2. The cleaning mechanism according to claim 1, characterized in that: It also includes a control unit connected to the fluid drive device (803), which is capable of controlling the start and stop of the fluid drive device (803).

3. The cleaning mechanism according to claim 2, characterized in that: It also includes a pressure detection unit (600) connected to the control unit. Along the flow direction of the airflow in the exhaust pipe (100), the pressure detection unit (600) is arranged upstream of the muffler (1) to detect the exhaust pressure in the exhaust pipe (100); Based on the exhaust pressure information detected by the pressure detection unit (600), the control unit can control the start and stop of the fluid drive device (803).

4. The cleaning mechanism according to claim 2, characterized in that: It also includes a vibration detection unit (6010) disposed on the waterproof valve (601), the vibration detection unit (6010) being connected to the control unit; Based on the vibration information detected by the vibration detection unit, the control unit can control the start and stop of the fluid drive device (803).

5. The cleaning mechanism according to claim 2, characterized in that: The water storage unit (801) is connected to the drain pipe in the vehicle air conditioning system via a bypass pipe (33), and the connection between the drain pipe and the bypass pipe (33) is higher than the water storage unit (801) in the vertical direction of the vehicle.

6. The cleaning mechanism according to claim 5, characterized in that: The bypass pipe (33) is equipped with a control valve (331), and the water storage section (801) is equipped with a water level detection section (8011) for detecting water level. The control valve (331) and the water level detection unit (8011) are respectively connected to the control unit. The control unit receives the water level information detected by the water level detection unit (8011) and controls the opening and closing of the control valve (331).

7. The cleaning mechanism according to claim 2, characterized in that: A water pressure detection unit (221) is provided on the pipeline connecting the fluid drive device (803) and the ejector (804), and the water pressure detection unit (221) is connected to the control unit; Based on the water pressure information detected by the water pressure detection unit (221), the control unit controls the output power of the fluid drive device (803).

8. The cleaning mechanism according to any one of claims 1-7, characterized in that: The spray angle of the spray nozzle in the injector (804) is adjustable.

9. A vehicle exhaust system, characterized in that: The vehicle exhaust system uses a cleaning mechanism (80) as described in any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle is equipped with the vehicle exhaust system as described in claim 9.

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