Exhaust tailpipe and vehicle

Abstract

The utility model discloses an exhaust tail pipe and vehicle, exhaust tail pipe includes: inhale pipe, inhale pipe is provided with first air inlet and first air outlet, the shunt pipe is provided with second air inlet and second air outlet, second air inlet with the inside communication of inhale pipe, first air outlet is in the shunt pipe, the inside communication of second air outlet with mix pipe, mix pipe is provided with third air inlet and third air outlet, third air inlet is in the shunt pipe and with first air outlet interval arrangement in the length direction of shunt pipe. Therefore, by setting this exhaust tail pipe, it can inhale more air in the environment into the mix pipe and mix with high temperature exhaust, thereby more effectively and quickly reduce the overall temperature of high temperature exhaust, and avoid the risk of heat damage to chassis parts.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an exhaust tailpipe and a vehicle. Background Technology

[0002] With technological advancements, vehicle chassis components are becoming increasingly numerous and compactly arranged. Currently, most vehicles on Chinese roads use a downdraft exhaust system (exhaust tailpipe located below the chassis). The high temperatures of the exhaust pipe can easily cause malfunctions in various chassis components, reducing their lifespan, such as water pipes, wiring harnesses, tires, fuel tanks, and brake cylinders. Therefore, the exhaust tailpipe design must ensure that the high-temperature exhaust does not blow onto these components, guaranteeing that they operate at acceptable temperatures. Consequently, the engine exhaust tailpipe requires the installation of a cooling or heat dissipation device.

[0003] Among related technologies, the commonly used cooling devices have complex structures, low air intake, limited reduction in exhaust temperature, and poor heat dissipation and cooling efficiency. Moreover, they are difficult to meet the cooling requirements when the engine is running at high speed and high load. They also require the addition of circulation control devices and cooling devices, resulting in extremely high operating costs. Utility Model Content

[0004] 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 exhaust tailpipe that can draw more ambient air into a mixing pipe to mix with the high-temperature exhaust, thereby more effectively and quickly reducing the overall temperature of the exhaust and avoiding the risk of thermal damage to chassis components.

[0005] This utility model further proposes a vehicle.

[0006] According to a first aspect of the present invention, an exhaust tailpipe includes: an intake pipe having a first air inlet and a first air outlet; a splitter pipe having a second air inlet and a second air outlet, the second air inlet communicating with the interior of the intake pipe, and the first air outlet being loosely fitted within the splitter pipe; and a mixing pipe having the second air outlet communicating with the interior of the mixing pipe, the mixing pipe having a third air inlet and a third air outlet, the third air inlet being loosely fitted within the splitter pipe and spaced apart from the first air outlet along the length direction of the splitter pipe.

[0007] Therefore, by setting up this exhaust tailpipe, more ambient air can be drawn into the mixing pipe and mixed with the high-temperature exhaust, thereby more effectively and quickly reducing the overall temperature of the high-temperature exhaust and thus avoiding the risk of thermal damage to chassis parts.

[0008] In some examples of this invention, the first air outlet is constructed as a constricted opening with a decreasing cross-sectional area in its air outlet direction.

[0009] In some examples of this invention, the second air inlet is constructed as a constricted opening with a decreasing cross-sectional area in the opposite direction of air intake.

[0010] In some examples of this invention, the third air inlet is configured as an flared opening with an increasing cross-sectional area in the direction opposite to its air intake.

[0011] In some examples of this utility model, the second air inlet extends into the suction tube, the second air outlet extends into the mixing tube; and / or the minimum diameter of the first air outlet is smaller than the maximum diameter of the third air inlet.

[0012] In some examples of this utility model, a plurality of first guide plates are provided between the inhalation tube and the diversion tube, and the plurality of first guide plates are distributed at intervals along the circumference of the diversion tube and extend along the length direction of the diversion tube.

[0013] In some examples of this utility model, a plurality of second guide plates are provided between the diversion pipe and the mixing pipe, and the plurality of second guide plates are distributed at intervals along the circumference of the diversion pipe and extend along the length direction of the diversion pipe.

[0014] In some examples of this utility model, the portion of the diverter tube located inside the mixing tube is provided with a plurality of air holes, and the plurality of air holes are respectively arranged at intervals along the circumference and axial direction of the diverter tube.

[0015] The vehicle according to the second aspect of this utility model includes: the exhaust tailpipe described above.

[0016] In some examples of this utility model, the angle between the central axis of the third air outlet and the ground is α, and α satisfies the relationship: α < 5°.

[0017] 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

[0018] 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:

[0019] Figure 1 This is an assembly diagram of the exhaust tailpipe and a portion of a vehicle according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the exhaust tailpipe according to an embodiment of the present utility model;

[0021] Figure 3 This is an exploded view of the exhaust tailpipe according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the inhalation tube according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the diversion tube according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the mixing tube according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 100. Exhaust tailpipe;

[0027] 1. Inhalation tube; 11. First air inlet; 12. First air outlet;

[0028] 2. Diverter pipe; 21. Second air inlet; 22. Second air outlet; 23. Air vent;

[0029] 3. Mixing pipe; 31. Third air inlet; 32. Third air outlet;

[0030] 4. First deflector; 5. Second deflector. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0032] The following is for reference. Figures 1-6 The exhaust tailpipe 100 according to an embodiment of the present invention can draw more ambient air into the mixing pipe 3 and mix it with the high-temperature exhaust, thereby more effectively and quickly reducing the overall temperature of the exhaust and avoiding the risk of thermal damage to chassis parts.

[0033] Combination Figures 1-6 As shown, the exhaust tailpipe 100 according to a first aspect embodiment of the present invention includes an intake pipe 1, a diverter pipe 2, and a mixing pipe 3. The intake pipe 1 is mainly used to draw in the high-temperature exhaust gas discharged from the engine. The diverter pipe 2 allows the gas in the intake pipe 1 to be dispersed into different flow channels. The mixing pipe 3 allows the incoming outside air to mix with the high-temperature exhaust gas. Furthermore, the intake pipe 1, diverter pipe 2, and mixing pipe 3 all serve to guide the gas flow and provide gas flow channels, thus ensuring that the gas flows along a designated path and improving the orderliness and precision of the exhaust position.

[0034] Specifically, the suction pipe 1 is provided with a first air inlet 11 and a first air outlet 12, the split pipe 2 is provided with a second air inlet 21 and a second air outlet 22, the second air inlet 21 is connected to the interior of the suction pipe 1, the first air outlet 12 is loosely fitted in the split pipe 2, the second air outlet 22 is connected to the interior of the mixing pipe 3, the mixing pipe 3 is provided with a third air inlet 31 and a third air outlet 32, the third air inlet 31 is loosely fitted in the split pipe 2, and the third air inlet 31 and the first air outlet 12 are spaced apart along the length of the split pipe 2.

[0035] Specifically, the first outlet 12 is loosely fitted around the outer circumference of the splitter pipe 2, and a gap is formed between the first outlet 12 and the outer wall of the splitter pipe 2. The second inlet 21 of the splitter pipe 2 is connected to the interior of the intake pipe 1. That is, after the high-temperature exhaust gas from the engine flows into the intake pipe 1 through the first inlet 11, a portion of the high-temperature exhaust gas in the intake pipe 1 flows into the splitter pipe 2 through the second inlet 21. The remaining portion of the high-temperature exhaust gas in the intake pipe 1 flows out through the gap between the first outlet 12 and the outer wall of the splitter pipe 2. Furthermore, because the third inlet 31 of the mixing pipe 3 and the first outlet 12 of the intake pipe 1 are located in the splitter pipe 2... The pipes are spaced apart along their length, so the high-temperature exhaust gas flowing out through the gap in the outer wall of the first outlet 12 can form an ejector airflow along the length of the split pipe 2 between the intake pipe 1 and the mixing pipe 3. (That is, when the high-temperature exhaust gas passes through the narrow outlet, the pressure of the high-temperature exhaust gas increases, the flow velocity accelerates, and the high-temperature exhaust gas exchanges momentum with the low-pressure gas around the split pipe 2, causing the surrounding gas to flow together.) As the ejection process proceeds, the high-temperature exhaust gas and the ejected external low-pressure gas are fully mixed, thereby achieving the effect of effectively dispersing heat, thereby reducing the exhaust temperature of the high-temperature exhaust gas and avoiding the risk of thermal damage. Moreover, the exhaust tailpipe 100 in this case has a simple structure, which can simplify the production process and reduce manufacturing costs.

[0036] Therefore, by setting up the exhaust tailpipe 100, more ambient air can be drawn into the mixing pipe 3 and mixed with the high-temperature exhaust, thereby more effectively and quickly reducing the overall temperature of the high-temperature exhaust and thus avoiding the risk of thermal damage to chassis parts.

[0037] According to some optional embodiments of the present invention, combined with Figures 2-4 As shown, the first air outlet 12 is constructed as a constricted opening with a decreasing cross-sectional area in its air outlet direction.

[0038] As arranged as described above, when the high-temperature exhaust gas passes through the first outlet 12, whose cross-sectional area gradually decreases, the flow velocity of the high-temperature exhaust gas can be further increased. The high-velocity high-temperature exhaust gas can form a powerful jet, thereby effectively improving the ability to draw in low-pressure air from the outside, and thus guiding more gas to mix with the high-temperature gas, reducing exhaust heat. In addition, the constricted shape of the first outlet 12 can help guide the gas to flow more smoothly, reduce the occurrence of turbulence, and thus reduce the noise level.

[0039] According to some optional embodiments of the present invention, combined with Figure 3 and Figure 5 As shown, the second air inlet 21 is constructed as a constricted opening with a decreasing cross-sectional area in the opposite direction of air intake. As arranged as above, the gap between the second air inlet 21 and the first air outlet 12 gradually increases in the opposite direction of air intake of the diversion pipe 2. This allows more high-temperature exhaust gas in the suction pipe 1 to flow out through the gap between the diversion pipe 2 and the first air outlet 12, thereby increasing the flow pressure of the high-temperature exhaust gas at the first air outlet 12, increasing the flow velocity of the high-temperature exhaust gas, and thus increasing the amount of outside air drawn in.

[0040] According to some optional embodiments of the present invention, combined with Figure 2 , Figure 3 and Figure 6 As shown, the third air intake 31 is constructed as a flared opening with an increasing cross-sectional area in the direction opposite to its air intake.

[0041] As arranged as described above, the cross-sectional area of ​​the third air inlet 31 of the mixing pipe 3 gradually increases in the direction opposite to its intake. This guides the outside air, improving the smoothness of the gas flow into the third air inlet 31 and reducing turbulence, thereby lowering noise. Furthermore, this structure also increases the range for introducing outside gas, thus increasing the amount of outside gas drawn in under the influence of the high-temperature exhaust gas.

[0042] Alternatively, combined Figure 2 , Figure 3 and Figure 5 As shown, the second air inlet 21 extends into the suction pipe 1, and the second air outlet 22 extends into the mixing pipe 3. The second air inlet 21 and the second air outlet 22 of the diversion pipe 2 extend into the suction pipe 1 and the mixing pipe 3, respectively. This facilitates the formation of a continuous flow channel for the high-temperature exhaust gas in the outlet direction, ensuring smooth flow of the high-temperature exhaust gas and preventing it from escaping in undesirable directions, thereby improving the rationality of the diversion pipe 2's arrangement.

[0043] Alternatively, combine Figures 1-4 and Figure 6As shown, the minimum diameter of the first air outlet 12 is smaller than the maximum diameter of the third air inlet 31. This arrangement ensures that the diameter of the first air outlet 12 is relatively small. According to Bernoulli's principle, high-speed fluid will generate a low-pressure zone, thereby attracting more external gas to enter the mixing pipe 3 through the third air inlet 31, enhancing the ejection effect. Meanwhile, the diameter of the third air inlet 31 is relatively large, which can increase the range of external gas intake, thereby increasing the amount of external air entering the mixing pipe 3.

[0044] According to some optional embodiments of the present invention, combined with Figure 3 and Figure 5 As shown, multiple first guide plates 4 are provided between the suction pipe 1 and the diversion pipe 2, and the multiple first guide plates 4 are distributed at intervals along the circumference of the diversion pipe 2.

[0045] Specifically, the first guide plate 4 can connect the intake pipe 1 and the diversion pipe 2 into a whole along the circumference of the diversion pipe 2, thereby improving the overall consistency of the intake pipe 1 and the diversion pipe 2; moreover, multiple first guide plates 4 are distributed at intervals along the circumference of the diversion pipe 2, so that the force on the intake pipe 1 and the diversion pipe 2 in the circumference is more uniform, reducing local stress concentration, thereby improving the uniformity of force distribution and extending the service life of the exhaust tailpipe 100.

[0046] In addition, the first guide plate 4 extends along the length of the split pipe 2. This can minimize the obstruction area of ​​the first guide plate 4 during the airflow along the axial direction of the split pipe 2, thus ensuring the smoothness of gas flow. It can also increase the connection contact area between the split pipe 2 and the intake pipe 1, thereby improving the connection reliability.

[0047] According to some optional embodiments of the present invention, combined with Figure 3 and Figure 5 As shown, a plurality of second guide plates 5 are provided between the diversion pipe 2 and the mixing pipe 3. The plurality of second guide plates 5 are distributed at intervals along the circumference of the diversion pipe 2, and the second guide plates 5 extend along the length direction of the diversion pipe 2.

[0048] Specifically, the second guide plate 5 can connect the mixing pipe 3 and the split pipe 2 into a whole along the circumference of the split pipe 2, thereby improving the overall consistency of the mixing pipe 3 and the split pipe 2; moreover, multiple second guide plates 5 are distributed at intervals along the circumference of the split pipe 2, so that the mixing pipe 3 and the split pipe 2 are subjected to more uniform force in the circumference, reducing local stress concentration, thereby improving the uniformity of force and extending the service life of the exhaust tailpipe 100.

[0049] The second guide plate 5 extends along the length of the split pipe 2. This minimizes the obstruction area of ​​the second guide plate 5 during the axial flow of the airflow along the split pipe 2, thus ensuring smooth gas flow. It also increases the connection contact area between the split pipe 2 and the mixing pipe 3, thereby improving the connection reliability.

[0050] Furthermore, the mixed gas entering from the third air inlet 31 of the mixing pipe 3 flows through the second guide plate 5 and forms turbulence. Turbulence can accelerate the mixing process between gases of different temperatures, increase the heat conduction area, and the mixed gas after forming turbulence further mixes with the high-temperature gas flowing out from the split pipe 2 at the tail of the mixing pipe 3 (that is, the end away from the suction pipe 1), thereby reducing the overall exhaust temperature.

[0051] According to some optional embodiments of the present invention, combined with Figure 5 As shown, the portion of the diversion pipe 2 located inside the mixing pipe 3 is provided with multiple air holes 23, which are spaced apart along the circumference and axial direction of the diversion pipe 2.

[0052] The above arrangement allows the high-temperature exhaust gas entering the split pipe 2 from the second air inlet 21 to flow along the circumference of the split pipe 2 through the air hole 23 into the gap between the split pipe 2 and the mixing pipe 3, thereby increasing the dispersion path of the high-temperature exhaust gas, improving the mixing rate and mixing uniformity of the outside atmosphere and the high-temperature exhaust gas inside and outside the mixing pipe 3, and thus improving the heat exchange and cooling effect.

[0053] The multiple air holes 23 are arranged at intervals along the circumference and axial direction of the diversion pipe 2, which makes the arrangement of the multiple air holes 23 more regular, thereby simplifying the production process and improving manufacturing efficiency.

[0054] According to the second aspect of the present invention, the vehicle includes the exhaust tailpipe 100 of the above embodiment. Thus, the vehicle having the exhaust tailpipe 100 can effectively reduce the overall exhaust temperature of the vehicle, avoid the risk of thermal damage to chassis parts caused by high-temperature exhaust gas, extend the service life of the vehicle, and thereby improve the market competitiveness of the vehicle.

[0055] According to some optional embodiments of this utility model, the angle between the central axis of the third air outlet 32 ​​and the ground is α, where α satisfies the relationship: α < 5°. For example, α can be 1°, 2°, 2.5°, and 4°, and is not limited thereto.

[0056] Since the third exhaust port 32 is located at the exhaust end of the exhaust tailpipe 100, the angle between the third exhaust port 32 and the ground is small. This reduces the amount of gas discharged from the third exhaust port 32 along the vertical decomposition path, avoiding the risk of dust and ash blowing caused by direct exhaust spray on the ground, thereby improving the driving experience and preventing secondary pollution to the environment.

[0057] Compared to traditional exhaust tailpipes (where the exhaust outlet blows directly onto the ground at a 45-degree angle), the embodiment in this case avoids the risk of thermal damage to chassis components from high-temperature exhaust, as well as the risk of dust and ash blowing caused by high-speed exhaust blowing directly onto the ground, thus preventing secondary pollution to the environment. Furthermore, the embodiment in this case can be flexibly applied to different vehicle models without the need for direct ground blowing (eliminating the need for whole-vehicle temperature field tests for different models), thereby improving the versatility of the exhaust tailpipe 100. This effectively avoids the need to design different tailpipe structures for different vehicle models and layouts, shortening the development cycle, reducing testing costs, development risks, and design costs.

[0058] 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", "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.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.

[0060] 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., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are 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.

[0061] 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 exhaust tailpipe (100), characterized in that, include: Inhalation tube (1), the inhalation tube (1) is provided with a first air inlet (11) and a first air outlet (12); The diverter pipe (2) is provided with a second air inlet (21) and a second air outlet (22). The second air inlet (21) is connected to the interior of the suction pipe (1), and the first air outlet (12) is loosely fitted in the diverter pipe (2). The mixing pipe (3) has a second air outlet (22) connected to the interior of the mixing pipe (3). The mixing pipe (3) is provided with a third air inlet (31) and a third air outlet (32). The third air inlet (31) is loosely fitted in the diverter pipe (2) and is spaced apart from the first air outlet (12) in the length direction of the diverter pipe (2).

2. The exhaust tailpipe (100) according to claim 1, characterized in that, The first air outlet (12) is constructed as a constricted opening with a decreasing cross-sectional area in its air outlet direction.

3. The exhaust tailpipe (100) according to claim 1, characterized in that, The second air inlet (21) is constructed as a constricted opening with a decreasing cross-sectional area in the opposite direction of air intake.

4. The exhaust tailpipe (100) according to claim 1, characterized in that, The third air inlet (31) is constructed as an flared opening with an increasing cross-sectional area in the opposite direction of air intake.

5. The exhaust tailpipe (100) according to claim 1, characterized in that, The second air inlet (21) extends into the suction tube (1), and the second air outlet (22) extends into the mixing tube (3); and / or The minimum diameter of the first air outlet (12) is smaller than the maximum diameter of the third air inlet (31).

6. The exhaust tailpipe (100) according to claim 1, characterized in that, A plurality of first guide plates (4) are provided between the inhalation tube (1) and the diversion tube (2). The plurality of first guide plates (4) are distributed circumferentially along the diversion tube (2) and extend along the length direction of the diversion tube (2).

7. The exhaust tailpipe (100) according to claim 1, characterized in that, A plurality of second guide plates (5) are provided between the diversion pipe (2) and the mixing pipe (3). The plurality of second guide plates (5) are distributed circumferentially along the diversion pipe (2) and extend along the length direction of the diversion pipe (2).

8. The exhaust tailpipe (100) according to claim 1, characterized in that, The portion of the diversion pipe (2) located inside the mixing pipe (3) is provided with a plurality of air holes (23), and the plurality of air holes (23) are respectively arranged at intervals along the circumference and axial direction of the diversion pipe (2).

9. A vehicle, characterized in that, include: The exhaust tailpipe (100) according to any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that, The angle between the central axis of the third air outlet (32) and the ground is α, and α satisfies the relationship: α < 5°.

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