Engine air intake system and vehicle

Abstract

The utility model relates to the technical field of engine air intake and discloses an engine air intake system and vehicle, and the engine air intake system comprises: an air cleaner for filtering air, an exhaust pipe assembly connected to the air side of the air cleaner and used for conveying gas to the side of the engine, a cooling device comprising a shell and a cooling member, the shell is arranged on the outer side of the peripheral wall of the exhaust pipe assembly and is formed with a containing groove for containing cooling medium, the cooling member is arranged in the containing groove, and part of the cooling member is arranged in the exhaust pipe assembly and extends into the exhaust passage of the exhaust pipe assembly, and the cooling medium can change phase in the exhaust passage through the cooling member. Thus, the cooling device selectively cools the gas in the exhaust pipe, and the gaseous cooling medium after phase change can be mixed in the gas to increase the humidity of the gas, realize engine air intake precooling, improve the charging efficiency of the side of the engine, and inhibit engine high-temperature knock and power attenuation.

Description

Technical Field

[0001] This application relates to the field of engine intake technology, and in particular to an engine intake system and a vehicle. Background Technology

[0002] Currently, the engine intake system is used to filter air to remove dust and other pollutants mixed in the air, and then supply the filtered air to the engine, thereby ensuring that the air supplied to the engine is clean, preventing internal engine wear, and ensuring stable engine operation.

[0003] In related technologies, the engine system uses natural aspiration to intake air. However, in high-temperature environments (such as summer), the intake air temperature of naturally aspirated engines is high, which leads to a decrease in air density and oxygen content, resulting in a decrease in charging efficiency. This causes the air-fuel mixture concentration in the engine's combustion chamber to deviate from the ideal air-fuel ratio, resulting in engine power loss.

[0004] Meanwhile, reduced cooling system efficiency leads to an overall increase in engine temperature. The high temperature accelerates the pre-flame reaction of the air-fuel mixture at the end of the combustion chamber, triggering abnormal combustion. Hot spots formed by carbon deposits on the piston top and valves can induce pre-ignition, further increasing the risk of knocking. While engines can improve these issues through enhanced cooling and optimized ignition timing, their naturally aspirated design limits their ability to actively adjust intake conditions, resulting in poor thermal efficiency and stability under high-temperature operating conditions. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide an engine intake system that can cool and humidify filtered gas, improving the gas supply effect to the engine side and contributing to stable engine operation.

[0006] An engine intake system according to an embodiment of the present invention includes: an air filter for filtering air; an exhaust pipe assembly connected to the exhaust side of the air filter and used to supply gas to the engine side; and a cooling device including a housing and a cooling element. The housing is disposed on the outer side of the peripheral wall of the exhaust pipe assembly and forms a receiving groove for containing a liquid cooling medium. The cooling element is placed in the receiving groove, and a portion of the cooling element penetrates the peripheral wall of the exhaust pipe assembly and extends into the exhaust passage of the exhaust pipe assembly. The cooling medium can undergo a phase change within the exhaust passage through the cooling element. Thus, the cooling device cools and lowers the temperature of the gas in the exhaust passage, preventing the gas supplied to the engine side from becoming too hot.

[0007] According to some embodiments of the present invention, the cooling component has a capillary channel, one end of which is connected to the receiving groove, and the other end of which is placed in and connected to the exhaust channel. The capillary channel is used to adsorb the cooling medium in the receiving groove, thereby transferring the water-cooled medium to the exhaust channel through the capillary effect.

[0008] According to some embodiments of the present invention, the cooling element is constructed as a cooling plate, the cooling plate having a plurality of capillary channels; and / or, there are a plurality of cooling elements, the plurality of cooling elements being arranged at intervals along the axial direction of the exhaust pipe assembly.

[0009] According to some embodiments of the present invention, the housing is disposed at the bottom of the exhaust pipe assembly, the exhaust pipe assembly includes an exhaust pipe, the bottom of the exhaust pipe having a through hole for the cooling component to pass through, thereby improving the assembly reliability of the housing and the exhaust pipe and reducing the risk of leakage of the cooling medium.

[0010] According to some embodiments of this utility model, the portion of the cooling component extending into the exhaust pipe is defined as the guide section of the cooling component. The guide section extends obliquely from the inner peripheral wall of the exhaust pipe toward the exhaust side and toward the central axis of the exhaust pipe. The angle α between the guide section and the axial direction of the exhaust pipe is an acute angle, so as to improve the contact effect between the gas and the cooling medium in the exhaust channel.

[0011] According to some embodiments of this utility model, α is 30°-60°.

[0012] According to some embodiments of the present invention, the exhaust pipe assembly further includes a sealing element, which is sleeved on the cooling element and is used to form a seal between the cooling element and the through hole to improve the sealing performance at the through hole.

[0013] According to some embodiments of the present invention, the cooling device further includes: a liquid storage device, which is used to store the cooling medium and is connected to the housing, and is used to transport the cooling medium into the housing, so as to selectively transport the cooling medium to one side of the housing through the liquid storage device.

[0014] The engine intake system according to the embodiments of this utility model has at least the following advantages compared to the prior art: In the engine intake system, air enters the air filter through the intake manifold assembly, and after being filtered by the air filter, the air enters the exhaust manifold assembly. A cooling device is arranged at the exhaust manifold assembly to selectively cool the gas in the exhaust manifold. The device can also mix the phase-change gaseous cooling medium into the gas to increase the humidity of the gas, thereby improving the charging efficiency on one side of the engine and suppressing engine high-temperature knocking and power attenuation.

[0015] Another objective of this invention is to provide a vehicle.

[0016] The vehicle includes the aforementioned engine intake system, and the advantages of the vehicle and engine intake system compared to the prior art are the same, which will not be repeated here.

[0017] According to some embodiments of the present invention, the vehicle further includes an air conditioning system, the air conditioning system having a drip pipe for discharging condensate generated during the operation of the air conditioning system, and the draining side of the drip pipe is connected to the cooling device and is adapted to deliver the condensate as a cooling medium to the cooling device.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of an engine intake system according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of an engine intake system according to an embodiment of the present invention. Figure 2 ; Figure 3 yes Figure 2 A cross-sectional view at the midline AA.

[0020] Figure label: 1000 vehicles; Engine intake system 100; Air conditioning system 200; Air filter 1; upper housing 11; lower housing 12; Exhaust pipe assembly 2; exhaust pipe 21; through hole 211; connecting clamp 22; Cooling device 3; housing 31; interface 311; receiving groove 312; cooling component 32; guide section 321; Intake pipe assembly 4. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] Currently, the engine intake system is used to filter air to remove dust and other pollutants mixed in the air, and then supply the filtered air to the engine, thereby ensuring that the air supplied to the engine is clean, preventing internal engine wear, and ensuring stable engine operation.

[0023] In related technologies, the engine system uses natural aspiration to intake air. However, in high-temperature environments (such as summer), the intake air temperature of naturally aspirated engines is high, which leads to a decrease in air density and oxygen content, resulting in a decrease in charging efficiency. This causes the air-fuel mixture concentration in the engine's combustion chamber to deviate from the ideal air-fuel ratio, resulting in engine power loss.

[0024] Meanwhile, reduced cooling system efficiency leads to an overall increase in engine temperature. The high temperature accelerates the pre-flame reaction of the air-fuel mixture at the end of the combustion chamber, triggering abnormal combustion. Hot spots formed by carbon deposits on the piston top and valves can induce pre-ignition, further increasing the risk of knocking. While engines can improve these issues through enhanced cooling and optimized ignition timing, their naturally aspirated design limits their ability to actively regulate intake conditions (such as pressure, temperature, and humidity), resulting in poor thermal efficiency and stability under high-temperature conditions.

[0025] The following is for reference. Figures 1-3 This invention describes an engine intake system 100 according to an embodiment of the present invention.

[0026] The engine intake system 100 according to an embodiment of the present invention includes: an air filter 1, an exhaust pipe assembly 2, and a cooling device 3.

[0027] Combination Figure 1 and Figure 2 As shown, the air filter 1 is used to filter air, so as to filter impurities and other pollutants mixed in the air, thereby ensuring the quality of the air supplied by the engine intake system 100 to the engine side.

[0028] Furthermore, the exhaust pipe assembly 2 is connected to the exhaust side of the air filter 1. The gas filtered by the air filter 1 can be discharged into the exhaust pipe assembly 2 and further delivered to the engine side through the exhaust pipe assembly 2, so as to realize the supply of gas to the engine side by the engine intake system 100.

[0029] Combination Figure 1 and Figure 3 As shown, the cooling device 3 includes a housing 31 and a cooling element 32. The housing 31 is disposed on the outer side of the peripheral wall of the exhaust pipe assembly 2, so that the housing 31 is arranged close to the exhaust pipe assembly 2. The housing 31 forms a receiving groove 312 for containing liquid cooling medium. The cooling element 32 is disposed in the receiving groove 312, and part of the cooling element 32 passes through the peripheral wall of the exhaust pipe assembly 2 and extends into the exhaust passage of the exhaust pipe assembly 2. The cooling medium can undergo phase change in the exhaust passage through the cooling element 32, thereby cooling down the gas in the exhaust pipe assembly 2, avoiding excessively high gas temperature entering the engine side through the exhaust pipe assembly 2, so as to improve the charging efficiency of the engine side, optimize the air-fuel ratio to make the combustion process more complete, alleviate the engine power reduction and suppress knock tendency, and improve the engine's operating stability and reliability under high temperature conditions.

[0030] It should be noted that in the cooling device 3, the housing 31 serves as the container for the cooling medium. The cooling medium contained in the housing 31 can be transferred to the exhaust passage of the exhaust pipe assembly 2 through the cooling element 32. This allows the gas to transfer heat to the cooling medium at the cooling element 32 as it flows through it, causing the cooling medium to undergo a phase change and absorb heat. This phase change and heat absorption of the cooling medium is then used to cool and regulate the gas in the exhaust pipe assembly 2. The aforementioned "cooling medium" can be a liquid medium such as water. Simultaneously, the gaseous cooling medium after the phase change can be transported to the engine side along with the gas.

[0031] It is understandable that when the engine intake system 100 filters air under high-temperature conditions, clean high-temperature gas can be obtained through the air filter 1, and this gas can be supplied to the engine side through the exhaust pipe assembly 2. Since the engine intake system 100 of this application is equipped with a cooling device 3 at the exhaust pipe assembly 2, when it is necessary to cool the gas in the exhaust pipe assembly 2, the cooling element 32 can guide the cooling medium in the housing 31 to the exhaust passage. When the gas flows through the cooling element 32, it can carry away the cooling medium at the cooling element 32 and cool the gas through the phase change of the cooling medium (e.g., the liquid cooling medium evaporates and absorbs heat to turn into a gas). The gaseous cooling medium can also mix with the gas in the exhaust passage to increase the humidity of the gas, thereby reducing the peak pressure and temperature in the engine cylinder, reducing the risk of knocking, and extending the ignition delay period and combustion duration to improve the premixed combustion efficiency. When it is not necessary to cool the gas in the exhaust pipe assembly 2, there is no need to fill the housing 31 with cooling medium. At this time, the cooling device 3 will not cool the gas flowing through the cooling element 32.

[0032] It should be noted that when the vehicle is in a high-temperature environment, the ambient air temperature is high, resulting in a high initial air temperature entering the engine intake system 100. Therefore, the filtered air needs to be cooled by the cooling device 3 to prevent the air supplied to the engine side from being too hot. When the vehicle is in other operating conditions (e.g., low ambient temperature), the air temperature entering the engine intake system 100 is low, so there is no need to cool it down by the cooling device 3.

[0033] In the engine intake system 100, air enters the air filter 1 through the intake manifold assembly 4, and after being filtered by the air filter 1, the air enters the exhaust manifold assembly 2. The cooling device 3 is arranged at the exhaust manifold assembly 2 to selectively cool the gas in the exhaust manifold 21. The phase-change gaseous cooling medium can be mixed in the gas to increase the humidity of the gas and achieve engine intake pre-cooling, thereby improving the charging efficiency on one side of the engine and suppressing engine high-temperature knocking and power attenuation.

[0034] In this application, by arranging the cooling device 3 at the exhaust pipe assembly 2, the cooling device 3 can cool the gas between the air filter 1 and the engine, thereby ensuring the mixing effect of the phase-change cooling medium in the gas. If the cooling device 3 is located at the intake pipe assembly 4, the gas is cooled by the cooling device 3 before entering the air filter 1, resulting in some of the gaseous cooling medium mixed in the gas being filtered out by the air filter 1, reducing the content of gaseous cooling medium mixed in the gas discharged into the exhaust pipe assembly 2.

[0035] In some embodiments of this utility model, the cooling element 32 has a capillary channel, one end of which is connected to the receiving groove 312, and the other end of which is placed inside the exhaust pipe 21. The end of the capillary tube placed inside the exhaust channel is connected to the exhaust channel. The capillary channel can adsorb the cooling medium in the receiving groove 312.

[0036] It is understandable that a capillary effect can be formed at the capillary channel. The cooling component 32 draws in the liquid cooling medium located in the receiving groove 312 through the capillary channel, so that the liquid cooling medium can flow to the exhaust channel side under the guidance of the capillary channel. When the gas in the exhaust channel flows through the cooling component 32, the high temperature gas can transfer heat to the liquid cooling medium, so that the liquid cooling medium changes phase to gaseous cooling medium, and the gaseous cooling medium after phase change can be transported to the engine side along with the gas.

[0037] The capillary effect utilizes the surface tension of a liquid to draw the liquid medium into a narrow tube structure with a small inner diameter, thereby achieving the extraction and transport of the liquid medium. In this application, the pore size of the capillary channel is no greater than 1 mm, thus ensuring that the capillary effect is formed at the capillary channel.

[0038] It should be noted that the cooling component 32 can also be constructed as a component that adsorbs the cooling medium and can contact the cooling medium with the gas in the exhaust channel through the part placed in the exhaust channel, such as a water-absorbing sponge, that is, the cooling component 32 can be constructed as a water-absorbing sponge in whole or in part.

[0039] In a further embodiment of this application, the cooling element 32 is configured as a cooling plate, which has multiple capillary channels, so that the cooling plate can extract the liquid cooling medium in the receiving tank 312 through the multiple capillary channels, thereby delivering the liquid cooling medium to the exhaust channel side through the multiple capillary channels on the same cooling plate, ensuring the cooling efficiency of the gas in the exhaust channel.

[0040] In other embodiments of this application, the cooling element 32 is configured as a tube, and at least one capillary channel is formed in the cooling element 32. The tubular cooling element 32 is disposed on the wall of the exhaust pipe assembly 2. It is understood that multiple capillary channels may be formed on the cooling element 32 to deliver the cooling medium to the exhaust pipe side through the multiple capillary channels.

[0041] like Figure 3 As shown, in some embodiments of this application, there are multiple cooling elements 32, which are spaced apart along the axial direction of the exhaust pipe assembly 2, so as to transport the cooling medium into the exhaust channel through the multiple cooling elements 32, thereby improving the cooling effect of the cooling device 3 on the gas in the exhaust channel.

[0042] Understandably, in the exhaust pipe assembly 2, the exhaust passage extends along the axial direction of the exhaust pipe assembly 2. Multiple cooling elements 32 also extend along the axial direction of the exhaust pipe assembly 2, and are arranged at intervals along the gas flow path in the exhaust passage. This ensures that the gas can fully contact the cooling elements 32 as it flows through the exhaust passage and into the area where the cooling device 3 is located, thereby guaranteeing sufficient contact between the gas and the cooling medium at the cooling elements 32 and improving the cooling effect of the cooling device 3 on the gas.

[0043] Combination Figure 1 and Figure 3 As shown, in some embodiments of this application, the housing 31 is disposed at the bottom of the exhaust pipe assembly 2, the exhaust pipe assembly 2 includes an exhaust pipe 21, and a through hole 211 is formed at the bottom of the exhaust pipe 21. The through hole 211 allows the cooling element 32 to pass through, so that the cooling element 32 can extend from the bottom of the exhaust pipe 21 into the exhaust channel.

[0044] It is understandable that the housing 31 has a receiving groove 312 for containing liquid cooling medium, and the cooling component 32 extends out of the receiving groove 312 and into the exhaust channel through the through hole 211. By placing the housing 31 at the bottom of the exhaust pipe 21, the risk of cooling medium leakage can be reduced. However, the through hole 211 of the exhaust pipe 21 needs to be located in the area corresponding to the housing 31. If the housing 31 is located at the top or side of the exhaust pipe 21, the through hole 211 will also be located at the top or side of the exhaust pipe 21, which will cause the cooling medium contained in the receiving groove 312 to flow into the exhaust channel through the through hole 211 or leak from the mating area between the housing 31 and the exhaust pipe 21, thus failing to effectively guarantee the assembly reliability of the cooling device 3 and the exhaust pipe 21.

[0045] In some embodiments of this application, the receiving groove 312 in the housing 31 is open to the exhaust pipe 21, so that the cooling component 32 can extend into the exhaust pipe 21 from the open end of the receiving groove 312, and the outer peripheral wall of the exhaust pipe 21 can be closed at the open end of the receiving groove 312, so that the exhaust pipe 21 and the housing 31 cooperate to form a closed cavity, ensuring the containment effect of the cooling medium in the housing 31.

[0046] Furthermore, a sealing ring is provided at the open port of the housing 31. The sealing ring is used to form a seal between the housing 31 and the exhaust pipe 21 to prevent external contaminants from entering the receiving groove 312 and to prevent the cooling medium in the receiving groove 312 from leaking, thus ensuring the reliability of the fit between the housing 31 and the exhaust pipe 21.

[0047] Reference Figure 1As shown, in some embodiments of this application, the exhaust pipe assembly 2 further includes a connecting clamp 22, which is disposed at the air inlet end of the exhaust pipe 21, so that the exhaust pipe 21 can be fixed to the exhaust port 311 of the air filter 1 by the connecting clamp 22, thereby realizing the connection and cooperation between the exhaust pipe assembly 2 and the air filter 1.

[0048] like Figure 3 As shown in a further embodiment of this application, the portion of the cooling element 32 extending into the exhaust pipe 21 is defined as the guide section 321 of the cooling element 32. The guide section 321 extends obliquely from the inner peripheral wall of the exhaust pipe 21 toward the exhaust side and toward the central axis of the exhaust pipe 21. Moreover, the angle α between the guide section 321 and the axial direction of the exhaust pipe 21 is an acute angle, thereby reducing the resistance encountered by the gas when it flows through the guide section 321 and ensuring the gas flow effect in the exhaust channel.

[0049] Reference Figure 3 As shown, Figure 3 The arrows in the diagram indicate the direction of gas flow. When the gas flows through the guide section 321, the guide section 321 can guide the direction of gas flow, thereby increasing the gas flow speed. In other words, the airflow in the exhaust channel is faster at the end of the capillary channel (i.e., the end where the capillary channel connects to the exhaust channel), which helps to improve the contact effect between the gas and the cooling medium in the exhaust channel, thereby ensuring the cooling effect of the cooling medium on the gas.

[0050] Understandably, if α is a right angle or an obtuse angle, it will cause the guide section 321 to resist the gas flow in the exhaust passage, affecting the effect of supplying gas to the engine side. For example, when α is an obtuse angle, it will cause vortices and other cyclones to be generated between the guide section 321 and the inner peripheral wall of the exhaust pipe 21, affecting the gas flow in the exhaust passage.

[0051] In some embodiments of this application, α is 30°-60°, for example: 40°, 45°, 50°, etc. When α is within the above-mentioned angle range, the guide section 321 can play a good guiding role for the flow of gas and can ensure the flow effect of gas in the exhaust channel.

[0052] Understandably, if the angle of α is too small (i.e., less than 30°, such as 10°, 15°, etc.), the gas cannot fully contact the liquid at the port of the capillary channel, resulting in low cooling efficiency of the cooling medium on the gas; if the angle of α is too large (i.e., greater than 60°, such as 75°, 85°, etc.), the resistance generated by the guide section 321 on the gas flow in the exhaust channel is large, affecting the gas flow effect in the exhaust channel.

[0053] In some embodiments of this application, the exhaust pipe assembly 2 further includes a seal (not shown in the figure), which is fitted onto the cooling member 32 and forms a seal between the cooling member 32 and the through hole 211 to improve the sealing performance of the exhaust passage. This prevents gas in the exhaust passage from flowing into the receiving groove 312 from the through hole 211 and prevents the water-cooling medium in the receiving groove 312 from entering the exhaust passage through the through hole 211, thus ensuring the flow effect of gas in the exhaust pipe 21.

[0054] Referring to Figure 3, the through hole 211 is provided through the wall of the exhaust pipe 21, and the extension direction of the through hole 211 is the same as the insertion direction of the cooling component 32. That is to say, the extension direction of the through hole 211 is inclined relative to the axial direction of the exhaust pipe 21, so as to improve the insertion and fitting effect between the cooling component 32 and the exhaust pipe 21.

[0055] In some embodiments of this application, the cooling device 3 further includes a liquid storage device (not shown) for storing the cooling medium, and the liquid storage device is connected to the housing 31 and is used to deliver the cooling medium into the housing 31 to selectively supply the cooling medium to the receiving tank 312.

[0056] Understandably, the liquid storage device is constructed as a separate containment device from the housing 31, and is used to store liquid cooling medium. When it is necessary to cool the gas in the exhaust channel through the cooling device 3, the liquid storage device can transport the liquid cooling medium to the housing 31, so that the cooling medium in the housing 31 can immerse one end of the cooling element 32. The cooling medium can be drawn into the exhaust channel through the capillary channels of the cooling element 32 to achieve cooling of the gas in the exhaust channel. When it is necessary to cool the gas in the exhaust channel, the liquid storage device can be disconnected from the housing 31, and the housing 31 does not need to contain cooling medium.

[0057] Reference Figure 1 As shown, in a further embodiment of this application, an interface 311 is provided on the housing 31 and disposed on the circumferential wall of the housing 31. The liquid storage device can deliver cooling medium into the housing 31 through the interface 311.

[0058] The liquid storage device can be constructed as a storage tank or other device with a containing function. Taking a storage tank as an example, the storage tank can be connected to the interface 311 through a pipeline structure (such as a rubber hose), and a pump structure can be connected to the pipeline structure to pump the cooling medium in the storage tank to the housing 31. It should be noted that the connection between the liquid storage device and the housing 31 and the method of supplying the cooling medium are not limited to this; it is sufficient to enable the delivery of the cooling medium to one side of the housing 31 through the liquid storage device.

[0059] In some embodiments of this application, the bottom wall of the housing 31 is provided with a switching valve, which can be selectively opened. It is understood that the cooling medium in the receiving tank 312 is suitable for being discharged from the housing 31 when the switching valve is opened, thereby emptying the cooling medium in the receiving tank 312. When it is not necessary to discharge the cooling medium from the housing 31 (e.g., when the cooling device 3 cools the gas in the exhaust channel, or when there is no cooling medium in the housing 31), the switching valve remains closed to prevent contaminants from outside the housing 31 from entering the receiving tank 312 through the switching valve, ensuring the cleanliness of the housing 31 and reducing the risk of capillary channels being blocked by impurities or impurities entering the exhaust channel side through the capillary channels.

[0060] like Figure 1 As shown, in some embodiments of this application, the air filter 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 and the lower shell 12 are engaged vertically to form a filter chamber. A filter element (not shown in the figure) is disposed in the filter chamber. The filter element is used to filter the air to remove impurities (such as dust, pollen, and other particles) from the air. The intake pipe assembly 4 is connected to the lower shell 12, and the exhaust pipe assembly 2 is connected to the upper shell 11, allowing air to flow from bottom to top through the air filter 1, thereby improving the filtration effect of the filter element.

[0061] In summary, the engine intake system 100 according to the embodiments of this application has at least the following advantages: In the engine intake system 100, the cooling device 3 is arranged at the exhaust pipe assembly 2 so as to selectively cool the gas in the exhaust pipe 21 through the cooling device 3, and the phase-change gaseous cooling medium can be mixed in the gas to increase the humidity of the gas, thereby improving the charging efficiency on the engine side and suppressing engine high-temperature knocking and power attenuation.

[0062] According to an embodiment of this application, the vehicle 1000 includes the engine intake system 100 described above, which optimizes the intake effect of the engine and thereby improves the engine's operational stability and reliability.

[0063] In some embodiments of this application, the vehicle 1000 further includes an air conditioning system 200, which has a drip pipe for draining condensate generated during operation. The drip pipe's drain side is connected to a cooling device 3, and the drip pipe can deliver the condensate as a cooling medium to the cooling device 3. Thus, the condensate generated during operation of the air conditioning system 200 can be directed to the cooling device 3, and the gas in the exhaust passage can be cooled using the phase change heat absorption principle of the cooling medium, thereby utilizing the resources (i.e., condensate) in the vehicle 1000.

[0064] It is understood that the air conditioning system 200 will generate condensate during operation, and the condensate is usually discharged directionally through a drip pipe. In this application, the condensate in the drip pipe can be discharged into the cooling device 3 to serve as the cooling medium in the cooling device 3, without the need to add an additional cooling medium.

[0065] In a further embodiment of this application, the drip tube is connected to the above-mentioned liquid storage device. The condensate discharged through the drip tube can be collected in the liquid storage device so that when the cooling device 3 needs to cool the gas in the exhaust channel, the cooling medium (i.e. condensate) in the liquid storage device can be transported to the housing 31 to realize the cooling function of the cooling device 3.

[0066] Understandably, the condensate from the drip tube can be pumped to the storage device via a water pump (such as an electronic water pump).

[0067] A filtration structure (such as a filter screen or filter paper) can be installed along the connection path between the dripping pipe and the liquid storage device to ensure the cleanliness of the condensate transported and collected in the liquid storage device.

[0068] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0069] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0070] In the description of this utility model, "multiple" means two or more.

[0071] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0072] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An engine intake system, characterized in that, include: An air filter (1) is used to filter air; Exhaust pipe assembly (2), which is connected to the exhaust side of the air filter (1) and is used to deliver gas to the engine side; Cooling device (3), the cooling device (3) comprising: The housing (31) is located on the outer side of the peripheral wall of the exhaust pipe assembly (2) and has a receiving groove (312) for containing liquid cooling medium. Cooling element (32) is placed in the receiving groove (312), and part of the cooling element (32) passes through the peripheral wall of the exhaust pipe assembly (2) and extends into the exhaust channel of the exhaust pipe assembly (2). The cooling medium can undergo phase change in the exhaust channel through the cooling element (32).

2. The engine intake system according to claim 1, characterized in that, The cooling element (32) has a capillary channel, one end of which is connected to the receiving groove (312), and the other end of which is placed in the exhaust channel and connected to the exhaust channel. The capillary channel is used to adsorb the cooling medium in the receiving groove (312).

3. The engine intake system according to claim 2, characterized in that, The cooling element (32) is constructed as a cooling plate, and the cooling plate has a plurality of capillary channels; And / or, there are multiple cooling elements (32), and the multiple cooling elements (32) are spaced apart along the axial direction of the exhaust pipe assembly (2).

4. The engine intake system according to claim 2, characterized in that, The housing (31) is disposed at the bottom of the exhaust pipe assembly (2), the exhaust pipe assembly (2) comprising: An exhaust pipe (21) has a through hole (211) formed at its bottom, through which the cooling element (32) passes.

5. The engine intake system according to claim 4, characterized in that, The portion of the cooling component (32) that extends into the exhaust pipe (21) is defined as the guide section (321) of the cooling component (32). The guide section (321) extends obliquely from the inner peripheral wall of the exhaust pipe (21) toward the exhaust side toward the central axis of the exhaust pipe (21), and the angle α between the guide section (321) and the axial direction of the exhaust pipe (21) is an acute angle.

6. The engine intake system according to claim 5, characterized in that, α is 30°-60°.

7. The engine intake system according to claim 4, characterized in that, The exhaust pipe assembly (2) also includes a seal that is fitted onto the cooling element (32) and is used to form a seal between the cooling element (32) and the through hole (211).

8. The engine intake system according to claim 1, characterized in that, The cooling device (3) further includes a liquid storage device for storing the cooling medium, and the liquid storage device is connected to the housing (31) and is used to transport the cooling medium into the housing (31).

9. A vehicle, characterized in that, Includes the engine intake system according to any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that, The vehicle (1000) also includes an air conditioning system (200) having a drip pipe for discharging condensate generated during operation of the air conditioning system (200), and the draining side of the drip pipe is connected to the cooling device (3) and is adapted to deliver the condensate as a cooling medium to the cooling device (3).

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