Exhaust system and vehicle

Abstract

The present disclosure relates to an exhaust system and a vehicle, and belongs to the technical field of vehicle exhaust emission. The exhaust system comprises an air inlet pipe, a muffler, a heating unit, a suction pump and a control unit; one end of the air inlet pipe is used for being communicated with an air outlet of an engine; one end of the muffler is communicated with the other end of the air inlet pipe; the heating unit is connected with the muffler; the suction pump is communicated with the muffler; the control unit is electrically connected with the engine, the heating unit and the suction pump respectively, and is used for: in the case that the engine stops running, controlling the heating unit to run so as to melt ice in the muffler, and controlling the suction pump to run so as to make water vapor discharge outside the muffler. By using the present disclosure, the convenience of solving the ice blocking problem can be improved.

Description

TECHNICAL FIELD

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

[0002] For a vehicle comprising an engine, in winter in high latitude areas, water vapor in exhaust gas will condense into ice and stay in the exhaust system after the vehicle stops running. If the vehicle is in a short-distance driving state for a long time, the ice in the exhaust system will gradually increase, eventually causing ice blockage, resulting in the engine being unable to start.

[0003] At present, dry agents are usually arranged in the exhaust system to adsorb water vapor in the exhaust gas, so as to avoid ice blockage of the exhaust system.

[0004] However, the above method needs to frequently replace the dry agent, which is relatively cumbersome to operate. SUMMARY

[0005] The present disclosure provides an exhaust system and a vehicle, which can solve the technical problems in the related art, and the technical solutions are as follows:

[0006] In a first aspect, the present disclosure provides an exhaust system, comprising an air inlet pipe, a muffler, a heating unit, a gas suction pump and a control unit;

[0007] One end of the air inlet pipe is used to communicate with an air outlet of an engine;

[0008] One end of the muffler communicates with the other end of the air inlet pipe;

[0009] The heating unit is connected with the muffler;

[0010] The gas suction pump communicates with the muffler;

[0011] The control unit is electrically connected with the engine, the heating unit and the gas suction pump, and is used for: in the case that the engine stops running, controlling the heating unit to run to melt the ice in the muffler, and controlling the gas suction pump to run to make the water vapor discharge outside the muffler.

[0012] In a possible implementation, the exhaust system further comprises a humidity measuring unit, which is electrically connected with the control unit and is used for measuring the humidity of the environment where the vehicle is located;

[0013] The control unit is used for: acquiring the humidity detected by the humidity measuring unit, and determining the ice increment corresponding to the current humidity in a pre-stored corresponding relationship between humidity and ice increment, wherein the ice increment is the volume of ice increased by the condensation of water molecules in the gas in the muffler.

[0014] determine an operation heat quantity of the engine, and determine an ice reduction corresponding to the operation heat quantity in a pre-stored corresponding relationship between operation heat quantity and ice reduction, wherein the operation heat quantity is a total heat quantity generated by the engine from starting operation to stopping operation, and the ice reduction is a volume of ice melted by absorbing heat in the engine exhaust gas in the muffler;

[0015] In the case that the engine stops operation, determine the size of the ice increase and the ice reduction, if the ice increase is greater than the ice reduction, control the heating unit to operate to melt the ice in the muffler, and control the exhaust pump to operate to make the water vapor discharged outside the muffler.

[0016] In a possible implementation, the determination of the operation heat quantity of the engine comprises:

[0017] determine a first operation time T1 of the engine in a starting state, a second operation time T2 of the engine in an idle state, and a third operation time T3 of the engine in a load state;

[0018] determine the operation heat quantity based on a formula: Q=m1·T1+m2·T2+m3·T3, wherein Q is the operation heat quantity, m1 is a heat generation coefficient of the engine in the starting state, m2 is a heat generation coefficient of the engine in the idle state, and m3 is a heat generation coefficient of the engine in the load state.

[0019] In a possible implementation, the exhaust system further comprises a temperature measuring unit electrically connected with the control unit, configured to measure the temperature in the muffler.

[0020] The control unit is configured to, in the case that the engine stops operation, acquire the temperature measured by the temperature measuring unit, and if the current temperature is in a preset temperature range, control the heating unit to operate to melt the ice in the muffler, and control the exhaust pump to operate to make the water vapor discharged outside the muffler, wherein the preset temperature range is [70℃, 150℃].

[0021] In a possible implementation, the heating unit is wrapped outside the muffler.

[0022] In a possible implementation, the heating unit is a resistance wire, and the resistance wire is spirally wound outside the muffler.

[0023] In a possible implementation, the exhaust system further comprises a particle trap, and two ends of the particle trap are respectively connected with the other end of the intake pipe and one end of the muffler.

[0024] In a possible implementation, the air extraction pump and the muffler are connected in communication through a corrugated pipe.

[0025] In a second aspect, the disclosure provides a vehicle, the vehicle comprising the exhaust system as in the first aspect and possible implementation modes thereof.

[0026] In a possible implementation, the vehicle comprises a bottom plate, the air inlet pipe, the muffler and the air extraction pump are connected to the bottom plate respectively, and the bottom plate has a drain hole in communication with the air outlet hole of the air extraction pump.

[0027] The technical solutions provided by the disclosure have at least the following beneficial effects:

[0028] The disclosure provides an exhaust system, a control unit controls a heating unit to operate when an engine stops running, to melt ice accumulated in a muffler, and controls an air extraction pump to operate to discharge the melted water in the form of water vapor from an exhaust pipe, thereby avoiding ice blockage. Compared with the related art that solves the ice blockage problem by arranging a drying agent, the solution provided by the embodiments of the disclosure does not need to frequently replace the drying agent, and is convenient to operate.

[0029] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is a structural schematic diagram of an exhaust system shown in an embodiment of the disclosure.

[0032] LEGEND

[0033] 1, air inlet pipe;

[0034] 2, muffler;

[0035] 21, primary muffler; 22, secondary muffler;

[0036] 3, heating unit;

[0037] 4, air extraction pump;

[0038] 5, control unit;

[0039] 6, temperature measurement unit;

[0040] 7. Particle trap;

[0041] 100. Engine;

[0042] 200. Base plate; 201. Drainage hole;

[0043] 300. Corrugated pipe. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0045] This disclosure provides an exhaust system, such as... Figure 1 As shown, the exhaust system includes an intake pipe 1, a muffler 2, a heating unit 3, an air pump 4, and a control unit 5.

[0046] The intake pipe 1 is connected to the exhaust port of the engine 100 at one end, the muffler 2 is connected to the other end of the intake pipe 1 at one end, the heating unit 3 is connected to the muffler 2, the vacuum pump 4 is connected to the muffler 2, and the control unit 5 is electrically connected to the engine 100, the heating unit 3, and the vacuum pump 4 respectively. The control unit 5 is used to: control the heating unit 3 to operate when the engine 100 stops, so as to melt the ice in the muffler 2, and control the vacuum pump 4 to operate so that water vapor is discharged outside the muffler 2.

[0047] In this way, by setting up heating unit 3 and air pump 4, when the engine 100 is stopped, heating unit 3 operates to heat muffler 2, causing the ice inside muffler 2 to melt. Simultaneously, air pump 4 operates to extract humid air from muffler 2 and discharge it outside, thereby eliminating ice buildup in muffler 2 and preventing ice blockage. Compared to related technologies that solve the ice blockage problem by using desiccant, the solution provided in this embodiment does not require frequent desiccant replacement and is easy to operate.

[0048] In some embodiments, the exhaust system further includes a humidity measuring unit, the control unit 5 determines the ambient humidity through the humidity measuring unit, and determines whether to control the operation of the heating unit 3 and the air pump 4 based on the ambient humidity.

[0049] In one example, the humidity measuring unit ( Figure 1 (Not shown) is arranged on the outer wall surface of the vehicle. This outer wall surface can be the outer wall surface of the vehicle chassis or the outer wall surface of the vehicle body; this embodiment does not limit this. The humidity measuring unit is electrically connected to the control unit 5, and the humidity measuring unit is used to measure the humidity of the environment in which the vehicle is located. The control unit 5 pre-stores a table showing the correspondence between humidity (relative humidity) and ice increment.

[0050] The ice increment is the volume of ice increased by the water molecules in the gas in the muffler 2 being frozen. Specifically, the ice increment is the volume of ice increased by the water molecules in the gas with the same ambient humidity entering and filling the inside of the muffler 2 in the normal pressure state, being condensed in the inside of the muffler 2, and being frozen.

[0051] Further, the control unit 5 is electrically connected with the engine 100, and the control unit 5 is further configured to determine the operation heat generated by the engine 100.

[0052] The operation heat is the total heat generated by the engine 100 from the start of the operation to the stop of the operation.

[0053] In implementation, the control unit 5 is electrically connected with the engine 100, and the control unit 5 can determine the operation time of the engine 100 in each state during the whole process from the start of the operation to the stop of the operation of the engine 100, and calculate the total heat generated by the engine 100 during the whole process from the start of the operation to the stop of the operation by accumulation, which is the operation heat mentioned above. Correspondingly, the control unit 5 further pre-stores a corresponding relationship table of the operation heat and the ice decrement, and through the corresponding relationship table, the control unit 5 can determine the ice decrement corresponding to the current operation heat.

[0054] The ice decrement is the volume of ice melted by the heat in the gas flowing out of the engine 100 absorbed by the muffler 2, that is, the volume of ice reduced by the muffler 2 after the whole process from the start of the operation to the stop of the operation of the engine 100.

[0055] In implementation, the control unit 5 first acquires the humidity detected by the humidity detection unit, and determines the ice increment corresponding to the current humidity in the pre-stored corresponding relationship table of the humidity and the ice increment. At the same time, the control unit 5 determines the operation heat of the engine 100, and determines the ice decrement corresponding to the current operation heat in the pre-stored corresponding relationship table of the operation heat and the ice decrement. Subsequently, in the case that the engine 100 stops operating, the control unit 5 determines the sizes of the ice increment and the ice decrement, and if the ice increment is greater than the ice decrement, the control unit 5 controls the heating unit 3 to operate to melt the ice in the muffler 2, and controls the air pump 4 to operate to make the water vapor discharged out of the muffler 2.

[0056] In this way, by comparing the sizes of the ice increment and the ice decrement, and controlling the heating unit 3 to operate in the case that the ice increment is greater than the ice decrement, it can be ensured that the volume of ice accumulated in the muffler 2 will not increase, so as to avoid ice blocking.

[0057] At the same time, compared with the technical solution that the control unit 5 controls the heating unit 3 after the engine 100 stops operating each time, the technical solution in the above example controls the heating unit 3 to operate only in the case that the ice increment is greater than the ice decrement, which is more energy-saving.

[0058] In an example, the control unit 5 can determine the operation heat generation of the engine 100 through the following process:

[0059] The control unit 5 is electrically connected with the engine 100, and the control unit 5 determines a first operation duration T1 of the engine 100 in a starting state, a second operation duration T2 of the engine 100 in an idling state, and a third operation duration T3 of the engine 100 in a load state. The operation heat generation is determined based on the formula: Q = m1·T1 + m2·T2 + m3·T3.

[0060] Wherein, Q is the operation heat generation, m1 is a heat generation coefficient of the engine 100 in the starting state, m2 is a heat generation coefficient of the engine 100 in the idling state, and m3 is a heat generation coefficient of the engine 100 in the load state.

[0061] It can be understood that the heat generation coefficients m1, m2 and m3 can be calculated by technicians according to experiments, and the embodiments of the present disclosure are not limited thereto.

[0062] In some possible embodiments, the control unit 5 can determine the accumulated ice amount in the muffler 2, and control the heating unit 3 to operate to melt the ice in the muffler 2 and control the air pump 4 to operate to discharge the water vapor out of the muffler 2 when the current accumulated ice amount is greater than or equal to a preset ice amount.

[0063] In some possible embodiments, the exhaust system further comprises a temperature measuring unit 6 electrically connected with the control unit 5, configured to measure the temperature in the muffler 2.

[0064] The control unit 5 is configured to: when the engine 100 stops operating, acquire the temperature measured by the temperature measuring unit 6, and control the heating unit 3 to operate for a preset time duration to melt the ice in the muffler 2 and control the air pump 4 to operate to discharge the water vapor out of the muffler 2 when the current temperature is in a preset temperature range.

[0065] Wherein, the preset temperature range is [70℃, 150℃], and the preset time duration can be 10 minutes.

[0066] The preset temperature range and the preset time duration can be set by technicians according to actual needs, and the embodiments of the present disclosure are not limited thereto.

[0067] Exemplarily, the temperature measuring unit 6 can be a temperature sensor arranged on a side of the muffler 2 close to the engine 100.

[0068] In some embodiments, the heating unit 3 is arranged outside the muffler 2.

[0069] In the implementation, the muffler 2 is connected with the engine 100 through a pipe, the exhaust gas from the engine 100 is high-temperature gas, the high-temperature gas is in contact with the ice accumulation far away from the inner wall of the muffler 2, and the ice accumulation is melted first. Correspondingly, the heating unit 3 is arranged outside the muffler 2, so that the ice accumulation close to the inner wall of the muffler 2 can first receive the heat emitted by the heating unit 3, thereby improving the melting efficiency of the ice accumulation.

[0070] In an example, as shown in Figure 1 The vehicle includes a floor 200, the muffler 2 is located above the floor 200 and is arranged in a spaced manner with the floor 200, and the heating unit 3 is located in the gap between the muffler 2 and the floor 200 and is connected with the outer wall of the muffler 2.

[0071] In the implementation, the water vapor is easy to condense inside the muffler 2 to form ice accumulation at the bottom of the muffler 2. The heating unit 3 is arranged in the gap between the muffler 2 and the floor 200, which is beneficial to improve the melting efficiency of the ice accumulation.

[0072] In some possible embodiments, the heating unit 3 is wrapped outside the muffler 2.

[0073] In an example, the heating unit 3 is a resistance wire, and the resistance wire is spirally wound outside the muffler 2.

[0074] The connection mode between the heating unit 3 and the muffler 2 can be adhesion, welding or clamping. The skilled person can set the connection mode between the heating unit 3 and the muffler 2 according to actual needs, and the embodiments of the present disclosure do not limit the connection mode.

[0075] In some possible embodiments, the exhaust system further includes a particulate trap 7.

[0076] As shown in Figure 1 The particulate trap 7 is located at the rear end of the engine 100 and at the front end of the muffler 2, and the two ends of the particulate trap 7 are respectively connected with the other end of the intake pipe 1 and one end of the muffler 2.

[0077] In the implementation, the particulate trap (Particulate Filter) is a device for reducing particulate matter emissions in automobile exhaust gas, and can absorb part of the water vapor in the exhaust gas discharged by the engine 100 to reduce the volume of ice accumulation in the muffler 2.

[0078] In some possible embodiments, the muffler 2 includes a primary muffler 21 and a secondary muffler 22.

[0079] As shown in Figure 1As shown, the first-stage muffler 21 is connected to the other end of the particle trap 7 through a first connecting pipe, the second-stage muffler 22 is connected to the first-stage muffler 21 through a second connecting pipe, and the heating unit 3 is arranged in a gap between the first-stage muffler 21 and the bottom plate 200 and connected to the outer wall of the first-stage muffler 21.

[0080] In implementation, the multi-stage muffler can improve the muffling effect of the exhaust gas.

[0081] In some possible embodiments, the air extraction pump 4 is connected to the muffler 2 through a corrugated pipe.

[0082] As shown in the figure, Figure 1 The air extraction pump 4 is arranged above the bottom plate 200 and connected to the bottom plate 200, the muffler 2 is provided with an air outlet hole together with the inner wall and the outer wall, and the air inlet of the air extraction pump 4 is connected to the air outlet hole through the corrugated pipe 300. In this way, the arrangement difficulty of the air extraction pump 4 can be reduced.

[0083] The technical solutions provided by the disclosure have at least the following beneficial effects:

[0084] The disclosure provides an exhaust system, which includes an air inlet pipe 1, a muffler 2, a heating unit 3, an air extraction pump 4, and a control unit 5. The one end of the air inlet pipe 1 is used to be connected to the air outlet of an engine 100, one end of the muffler 2 is connected to the other end of the air inlet pipe 1, the heating unit 3 is connected to the muffler 2, the air extraction pump 4 is connected to the muffler 2, and the control unit 5 is electrically connected to the engine 100, the heating unit 3, and the air extraction pump 4, and is used to: in the case that the engine 100 stops running, control the heating unit 3 to operate to melt the ice in the muffler 2, and control the air extraction pump 4 to operate to make the water vapor discharged outside the muffler 2. In this way, by arranging the heating unit 3 and the air extraction pump 4, in the case that the engine 100 stops running, the heating unit 3 operates to heat the muffler 2, so that the ice in the muffler 2 is melted, and at the same time, the air extraction pump 4 operates to extract the wet air in the muffler 2 and discharge it outside the muffler 2, so as to eliminate the ice accumulation in the muffler 2 and avoid ice blockage. Compared with the way of solving the ice blockage problem by arranging a drying agent in the related art, the scheme provided in the embodiment of the disclosure does not need to frequently replace the drying agent, and is convenient to operate.

[0085] The disclosure provides a vehicle, which includes the above-mentioned exhaust system.

[0086] In some possible embodiments, as shown in the figure, Figure 1 The bottom plate 200 of the vehicle has a drain hole 201.

[0087] As shown in the figure, Figure 1As shown, the vehicle includes a bottom plate 200, the air inlet pipe 1, the muffler 2 and the air exhaust pump 4 are connected to the bottom plate 200 respectively, the bottom plate 200 has a drain hole 201, the drain hole 201 is connected to the air outlet hole of the air exhaust pump 4.

[0088] In this way, the wet air discharged by the air exhaust pump 4 can leave the vehicle through the drain hole 201.

[0089] Optionally, the number of the drain hole 201 can be one or multiple, and the number, position and shape of the drain hole 201 can be set by the skilled person according to actual needs, and the embodiments of the present disclosure do not limit the number, position and shape of the drain hole 201.

[0090] The type of the vehicle is not limited in the present disclosure, for example, a sedan, a passenger car, a truck, a sport utility vehicle (SUV) and the like.

[0091] The exhaust system in the embodiments of the present disclosure can be used in a hybrid electric vehicle (HEV), for example, a range extender, a plug-in and the like, and can also be used in a traditional internal combustion engine (ICE).

[0092] In the description of the present disclosure, the description of the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In the present disclosure, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the different embodiments or examples described in the present disclosure and the features of the different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0093] It can be understood that "multiple" in the present disclosure means two or more, and other quantifiers are similar. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it. The singular form "a", "said" and "the" are also intended to include the plural form, unless the context clearly indicates otherwise.

[0094] It will be further understood that the terms "first", "second", etc. are used to describe various information but should not be construed as limiting the information to these terms only. These terms are used only to distinguish one from another instance of the same type of information. In practice, the "first", "second", etc. designations can be interchanged. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0095] It will be further understood that the terms "center", "longitudinal", "lateral", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate relative or positional relationships based on the orientations or positions shown in the drawings, and are used only to facilitate the description of the embodiments and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and be operated in a particular orientation.

[0096] It will be further understood that, unless otherwise specified and limited, the terms "mount", "connect", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral molding; can be mechanical connection, can also be electrical connection or can communicate with each other; can be direct connection between the two without other components, can also be indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0097] It will be further understood that, although the operations in the embodiments of the present disclosure are described in a specific order in the drawings, it should not be construed that the operations must be performed in the specific order or in a serial order, or that all the shown operations must be performed to obtain the desired results. In a specific environment, multi-tasking and parallel processing can be advantageous.

[0098] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the aspects disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including modifications and equivalents of the present disclosure. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the scope of the claims.

[0099] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An exhaust system characterized by, The exhaust system is applied to a vehicle, and the exhaust system comprises an air inlet pipe (1), a muffler (2), a heating unit (3), an air pump (4) and a control unit (5); One end of the air inlet pipe (1) is used for being communicated with an air outlet of an engine (100); One end of the muffler (2) is communicated with the other end of the air inlet pipe (1); The heating unit (3) is connected with the muffler (2); The air pump (4) is communicated with the muffler (2); The control unit (5) is electrically connected with the engine (100), the heating unit (3) and the air pump (4) respectively, and is used for: in the case that the engine (100) stops running, controlling the heating unit (3) to run so as to melt ice in the muffler (2), and controlling the air pump (4) to run so as to make water vapor to be discharged out of the muffler (2).

2. The exhaust system of claim 1, wherein, The exhaust system further comprises a humidity measuring unit, which is electrically connected with the control unit (5) and is used for measuring humidity of an environment in which the vehicle is located; The control unit (5) is used for: acquiring the humidity detected by the humidity measuring unit, determining an ice increment corresponding to the current humidity in a pre-stored corresponding relationship between humidity and ice increment, wherein the ice increment is a volume of ice increased due to water molecules in gas in the muffler (2) being frozen; determining a running heat quantity of the engine (100), determining an ice reduction corresponding to the current running heat quantity in a pre-stored corresponding relationship between running heat quantity and ice reduction, wherein the running heat quantity is a total heat generated by the engine from starting to running to stopping, and the ice reduction is a volume of ice melted due to heat in the gas flowing out of the engine (100) being absorbed by the muffler (2); and in the case that the engine (100) stops running, determining sizes of the ice increment and the ice reduction, and if the ice increment is greater than the ice reduction, controlling the heating unit (3) to run so as to melt the ice in the muffler (2), and controlling the air pump (4) to run so as to make the water vapor to be discharged out of the muffler (2). The determination of the running heat quantity of the engine (100) comprises: determining a first running time T1 of the engine (100) in a starting state, a second running time T2 of the engine (100) in an idling state and a third running time T3 of the engine (100) in a load state; 3. The exhaust system of claim 2, wherein, determining the running heat quantity based on a formula: Q=m1*T1+m2*T2+m3*T3, wherein Q is the running heat quantity, m1 is a heat generation coefficient of the engine (100) in the starting state, m2 is a heat generation coefficient of the engine (100) in the idling state, and m3 is a heat generation coefficient of the engine (100) in the load state. The exhaust system further comprises a temperature measuring unit (6) which is electrically connected with the control unit (5) and is used for measuring a temperature in the muffler (2). ​ 4. The exhaust system of claim 1, wherein, ​ The control unit (5) is configured to: in the case that the engine (100) stops running, acquire the temperature measured by the temperature measuring unit (6), control the heating unit (3) to run for a preset time length to melt the ice in the muffler (2) if the current temperature is within a preset temperature range, and control the air pump (4) to run to make the water vapor discharge outside the muffler (2), wherein the preset temperature range is [70℃, 150℃].

5. The exhaust system of claim 1, wherein, The heating unit (3) is wrapped outside the muffler (2).

6. The exhaust system of claim 5, wherein, The heating unit (3) is a resistance wire, and the resistance wire is spirally wound outside the muffler (2).

7. The exhaust system of claim 1, wherein, The exhaust system further comprises a particle trap (7), and two ends of the particle trap (7) are respectively connected with the other end of the air inlet pipe (1) and one end of the muffler (2).

8. The exhaust system of claim 1, wherein, The air pump (4) and the muffler (2) are connected through a corrugated pipe (300).

9. A vehicle characterized by comprising: The vehicle comprises the exhaust system according to any one of claims 1 to 8.

10. The vehicle of claim 9, wherein, The vehicle comprises a bottom plate (200), and the air inlet pipe (1), the muffler (2) and the air pump (4) are respectively connected with the bottom plate (200), and the bottom plate (200) has a drain hole (201) which is connected with the air outlet hole of the air pump (4). The vehicle comprises a bottom plate (200), and the air inlet pipe (1), the muffler (2) and the air pump (4) are respectively connected with the bottom plate (200), and the bottom plate (200) has a drain hole (201) which is connected with the air outlet hole of the air pump (4).

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