Integrated exhaust system, powertrain assembly, and vehicle

Abstract

The application provides an integrated exhaust system, a power system assembly and a vehicle, and belongs to the technical field of vehicle parts. The integrated exhaust system comprises an exhaust assembly and an exhaust gas recirculation assembly. The exhaust assembly is used to be connected with an air outlet of an engine. The exhaust gas recirculation assembly is connected with the exhaust assembly, and at least a part of the exhaust gas recirculation assembly is located inside the exhaust assembly. The integrated exhaust system provided by the application can reduce the total length of pipelines in the exhaust gas recirculation assembly, reduce the cost, improve the response rate of the exhaust gas recirculation assembly, and help to optimize the spatial arrangement and improve the integration.

Description

[0001] This application claims priority to Chinese Patent Application No. 202521264768.X, filed with the Chinese Patent Office on June 18, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicle component technology, and in particular to an integrated exhaust system, powertrain assembly, and vehicle. Background Technology

[0003] In related technologies, in order to improve the EGR (Exhaust Gas Recirculation) rate, the EGR device is usually integrated with the exhaust gas passage in the engine cylinder head. The circulation pipeline is relatively long, which leads to EGR response delay and high pipeline cost. Utility Model Content

[0004] This application provides an integrated exhaust system, powertrain assembly, and vehicle that can reduce the total length of the piping in the exhaust gas recirculation assembly, lower costs, improve the response rate of the exhaust gas recirculation assembly, and help optimize space layout and improve integration.

[0005] To achieve the above objectives, according to a first aspect of this application, an integrated exhaust system is provided, comprising:

[0006] Exhaust assembly, used to connect to the engine's exhaust port;

[0007] An exhaust gas recirculation (EGR) assembly is connected to an exhaust gas assembly, and at least a portion of the EGR assembly is located inside the exhaust gas assembly.

[0008] Optionally, the exhaust system includes a catalytic converter and a muffler, with the catalytic converter connected between the engine's exhaust port and the muffler, and the exhaust gas recirculation system connected to either the catalytic converter or the muffler.

[0009] Optionally, the exhaust gas recirculation assembly is connected to one end of the catalytic converter line near the engine outlet.

[0010] Optionally, the exhaust assembly includes a housing, within which a receiving cavity is formed;

[0011] The exhaust gas recirculation assembly is located at least partially within the containment cavity, and the catalytic converter and / or silencer are located at least partially within the containment cavity.

[0012] Optionally, the exhaust gas recirculation assembly includes an intake pipe, a recirculation cooler, and an outlet pipe. The recirculation cooler is disposed on the exhaust assembly, and the intake pipe is connected between the exhaust assembly and the recirculation cooler so that at least a portion of the exhaust gas in the exhaust assembly enters the recirculation cooler. The recirculation cooler is used to cool the exhaust gas entering it, and the outlet pipe is used to connect between the recirculation cooler and the engine intake port so that the cooled exhaust gas enters the engine.

[0013] Optionally, the exhaust assembly includes a housing, within which a receiving cavity is formed;

[0014] An air intake pipe is disposed within the receiving cavity, and / or, a recirculation cooler is disposed within the receiving cavity.

[0015] Optionally, the exhaust assembly includes a catalytic converter and a muffler, the catalytic converter being connected between the engine's exhaust port and the muffler, and at least a portion of the catalytic converter and the muffler being located within a receiving cavity, and the recirculation cooler being connected to the catalytic converter via an intake pipe;

[0016] The catalytic converter and the silencer extend along the first direction. The gas intake pipe and the recirculation cooler are located at one end of the first direction inside the shell. The catalytic converter, the gas intake pipe and the recirculation cooler are arranged in sequence along the second direction. The recirculation cooler and the silencer are arranged along the first direction.

[0017] The first direction and the second direction are perpendicular to each other.

[0018] Optionally, the exhaust gas recirculation assembly also includes an actuator disposed between the recirculation cooler and the exhaust pipe, the actuator being used to control the amount of exhaust gas entering the engine intake.

[0019] Optionally, the exhaust assembly includes a housing, an actuator disposed on the housing, and the actuator is disposed outside the housing.

[0020] Optionally, the exhaust gas recirculation assembly includes an inlet pipe and an outlet pipe;

[0021] The inlet pipe and outlet pipe are used to circulate the coolant in the recirculation cooler so that the exhaust gas in the recirculation cooler can exchange heat with the coolant for cooling.

[0022] Optionally, the inlet pipe is connected in parallel with the engine's engine cooler to the main inlet pipe;

[0023] And / or, the outlet pipe is used to connect in parallel with the engine's engine cooler to the main outlet pipe.

[0024] Optionally, the exhaust assembly includes an intake end and an exhaust end disposed opposite to each other, and the exhaust gas recirculation assembly is disposed at the end of the exhaust assembly closer to the intake end.

[0025] Optionally, the liquid outlet pipe is connected to the heat recovery assembly in the vehicle.

[0026] According to a second aspect of this application, a powertrain assembly is also provided, including an engine and an integrated exhaust system as described above;

[0027] The integrated exhaust system is located on one side of the engine.

[0028] According to a third aspect of this application, a vehicle is also provided, including the integrated exhaust system as described above, and / or the powertrain assembly as described above.

[0029] The integrated exhaust system provided in this application includes an exhaust assembly and an exhaust gas recirculation (EGR) assembly. The exhaust assembly is connected to the engine's exhaust port. The EGR assembly is connected to the exhaust assembly, and at least a portion of the EGR assembly is located inside the exhaust assembly. By connecting the EGR assembly to the exhaust assembly, and ensuring that at least a portion of the EGR assembly is located inside the exhaust assembly, the EGR assembly can directly draw gas from the exhaust assembly. This helps improve the level of integration, reduces the length of the connecting pipes between the EGR assembly and the exhaust assembly, lowers pipe costs, and improves the response rate of the EGR assembly. Furthermore, by integrating the exhaust assembly and the EGR assembly into an integrated exhaust system, and ensuring that at least a portion of the EGR assembly is located inside the exhaust assembly, the space occupied by a separately arranged EGR assembly can be reduced. In other words, the integrated exhaust system provided in this application can reduce the total length of the pipes in the EGR assembly, lower costs, improve the response rate of the EGR assembly, and help optimize space layout and improve integration.

[0030] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0033] Figure 1 This is a schematic cross-sectional view of the integrated exhaust system provided in the embodiments of this application. Figure 1 ;

[0034] Figure 2This is a partial cross-sectional structural schematic diagram of the integrated exhaust system provided in the embodiments of this application; wherein, Figure 2 A cross-sectional view of the housing at the exhaust gas recirculation component;

[0035] Figure 3 This is a cross-sectional view of another integrated exhaust system provided in an embodiment of this application;

[0036] Figure 4 This is a schematic cross-sectional view of the integrated exhaust system provided in the embodiments of this application. Figure 2 ;

[0037] Figure 5 This is a schematic cross-sectional view of the integrated exhaust system provided in the embodiments of this application. Figure 4 ;

[0038] Figure 6 This is a schematic diagram of the external structure of the powertrain assembly provided in the embodiments of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Integrated exhaust system; 10. Exhaust assembly; 11. Catalytic converter piping; 111. First catalytic converter carrier; 112. Second catalytic converter carrier; 12. Silencing piping; 13. Housing; 131. Receiving cavity; 14. Inlet end; 15. Outlet end; 16. Connecting piping; 20. Exhaust gas recirculation assembly; 21. Intake pipe; 22. Recirculation cooler; 23. Outlet pipe; 24. Actuator; 25. Liquid inlet pipe; 26. Liquid outlet pipe;

[0041] 200. Powertrain assembly; 210. Engine; 220. Engine cooler. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0043] Firstly, please refer to Figures 1-3This application provides an integrated exhaust system 100, including an exhaust assembly 10 and an exhaust gas recirculation (EGR) assembly 20. The exhaust assembly 10 is connected to the exhaust port of an engine 210. The EGR assembly 20 is connected to the exhaust assembly 10, and at least a portion of the EGR assembly 20 is located inside the exhaust assembly 10. By connecting the EGR assembly 20 to the exhaust assembly 10 and integrating the EGR assembly 20 with the exhaust assembly 10, the EGR assembly 20 can directly draw gas from the exhaust assembly 10, which helps to improve the degree of integration, reduce the length of the pipeline between the EGR assembly 20 and the exhaust assembly 10, reduce pipeline costs, and improve the response rate of the EGR assembly 20. Furthermore, by integrating the exhaust assembly 10 and the EGR assembly 20 into the integrated exhaust system 100, and with at least a portion of the EGR assembly 20 located inside the exhaust assembly 10, the space occupied by a separately arranged EGR assembly 20 can be reduced. In other words, the integrated exhaust system 100 provided in this application embodiment can reduce the total length of the pipeline in the exhaust gas recirculation component 20, reduce costs and improve the response rate of the exhaust gas recirculation component 20, and help optimize the space layout and improve integration.

[0044] With the rapid development of the new energy vehicle market, the proportion of pure electric and hybrid vehicles in the passenger car market is constantly increasing. Currently, hybrid vehicles still retain engines similar to those in conventional gasoline vehicles, where exhaust gases are guided from the front to the rear of the vehicle through the exhaust system. This exhaust system arrangement results in a relatively long exhaust pipe, which becomes extremely hot as the exhaust gases pass through it. To reduce the impact of this high-temperature heat radiation, the battery pack needs to be positioned away from the exhaust pipe, compressing the space available for the battery and limiting the pure electric range of hybrid vehicles.

[0045] EGR (Exhaust Gas Recirculation) technology involves cooling the exhaust gas from combustion in engine 210 using the exhaust gas recirculation assembly 20 before re-introducing it into the engine 210's intake system. The exhaust gas mixes with fresh exhaust gas and is then burned again. Because the exhaust gas contains a high amount of carbon dioxide, this effectively reduces combustion temperature and nitrogen oxide emissions. To ensure the mixed intake air temperature is not too high and to minimize engine 210 power loss, the exhaust gas recirculation assembly 20 cools the exhaust gas before introducing it into the engine 210's intake.

[0046] The integrated exhaust system 100 provided in this application embodiment integrates an exhaust assembly 10 and an exhaust gas recirculation assembly 20. Compared with the conventional technology where the exhaust gas recirculation assembly 20 is arranged inside the cylinder head of the engine 210, it reduces the space occupied inside the cylinder head of the engine 210 and helps to reduce the length of the pipeline between the exhaust gas recirculation assembly 20 and the exhaust assembly 10, thereby improving the response rate of the exhaust gas recirculation assembly 20.

[0047] It is understandable that the exhaust gas recirculation assembly 20 can directly draw gas from the exhaust assembly 10, and the relative positional relationship between the exhaust assembly 10 and the exhaust gas recirculation assembly 20 can be set according to the actual space layout requirements, which can improve the layout flexibility of the exhaust gas recirculation assembly 20.

[0048] It should be noted that, in the embodiments of this application, Figure 1 , Figure 3 , Figure 4 and Figure 5 This is a cross-sectional view to show the spatial arrangement of the exhaust assembly 10 and the exhaust gas recirculation assembly 20 within the receiving cavity 131 of the housing 13. Figure 2 This is a partial sectional view showing the spatial arrangement of the exhaust gas recirculation assembly 20, with the housing 13 at the exhaust gas recirculation assembly 20 cut in section.

[0049] In some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The exhaust assembly 10 includes a catalytic converter 11 and a muffler 12. The catalytic converter 11 is connected between the exhaust port of the engine 210 and the muffler 12. The exhaust gas recirculation assembly 20 is connected to either the catalytic converter 11 or the muffler 12. The catalytic converter 11 is responsible for catalyzing the exhaust gas discharged from the engine 210 and guiding the exhaust gas into the muffler 12, reducing the noise generated during exhaust and thus meeting NVH (noise, vibration, and harshness) performance requirements. The exhaust gas recirculation assembly 20 can be connected to the catalytic converter 11 to draw gas from it, or it can be connected to the muffler 12 to draw gas from it. That is, the embodiments of this application do not limit the gas intake position of the exhaust gas recirculation assembly, which can improve the flexibility of the exhaust gas recirculation assembly arrangement. At the same time, drawing gas from different pressure positions helps to broaden the working range of the exhaust gas recirculation assembly, ensuring that the engine 210 can be used under different load conditions and improving the performance of the engine 210.

[0050] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 5The exhaust gas recirculation (EGR) assembly 20 is connected to the end of the catalytic converter pipe 11 closest to the engine 210 outlet. This arrangement improves the compactness of the exhaust assembly 10 and the EGR assembly 20, while reducing the length of the pipe between them, thus improving the response rate of the EGR assembly. Furthermore, the exhaust gas temperature and thermal inertia are higher at the catalytic converter pipe 11 closest to the engine 210 outlet, allowing for a faster response to the EGR assembly's exhaust gas demands and facilitating precise control of exhaust gas flow.

[0051] In some embodiments, please refer to Figures 1-3 The exhaust assembly 10 also includes a housing 13, within which a receiving cavity 131 is formed. The exhaust gas recirculation assembly 20 is at least partially located within the receiving cavity 131, as are the catalytic converter 11 and / or the muffler 12. The housing 13 provides protection for the exhaust assembly 10 and the exhaust gas recirculation assembly 20, and improves the integration between them.

[0052] It is understood that at least a portion of the exhaust gas recirculation assembly 20, the catalytic converter 11, and the silencer 12 may be disposed within the receiving cavity 131 simultaneously (see [reference]). Figures 1-2 Alternatively, at least a portion of the exhaust gas recirculation assembly 20 and the catalytic converter 11 may be disposed within the receiving cavity 131 simultaneously, or at least a portion of the exhaust gas recirculation assembly 20 and the silencer 12 may be disposed within the receiving cavity 131 simultaneously (see [link to relevant documentation]). Figure 3 Those skilled in the art can choose according to actual needs.

[0053] In some embodiments, the exhaust gas recirculation assembly 20 includes an intake pipe 21, a recirculation cooler 22, and an outlet pipe 23. The recirculation cooler 22 is disposed on the exhaust assembly 10. The intake pipe 21 is connected between the exhaust assembly 10 and the recirculation cooler 22 so that at least a portion of the exhaust gas in the exhaust assembly 10 enters the recirculation cooler 22. The recirculation cooler 22 is used to cool the exhaust gas entering it. The outlet pipe 23 is used to connect between the recirculation cooler 22 and the air intake of the engine 210 so that the cooled exhaust gas enters the engine 210.

[0054] That is, the intake pipe 21 is connected between the exhaust assembly 10 and the recirculation cooler 22 to allow the exhaust gas in the exhaust assembly 10 to enter the recirculation cooler 22, and then the recirculation cooler 22 cools the exhaust gas entering it. Then, the exhaust pipe 23 is connected to the intake port of the engine 210 so that the cooled exhaust gas can participate in the recirculation again, thus completing the exhaust gas recirculation process.

[0055] For example, please refer to Figure 1and Figure 2 The exhaust gas recirculation assembly 20, including the intake pipe 21, recirculation cooler 22, part of the catalytic converter 11, and part of the muffler 12, is located in the housing 131. This integrates the exhaust gas recirculation assembly 20 and the exhaust assembly 10 within the housing 13, reducing the overall volume of the integrated exhaust system 100. The housing 13 also protects the exhaust gas recirculation assembly 20 and the exhaust assembly 10 located within it, improving the protection effect.

[0056] Please see Figure 3 In the exhaust assembly 10, the catalytic converter 11 is located outside the housing 13, while the muffler 12 and the recirculation cooler 22 in the exhaust gas recirculation assembly 20 are located within the receiving cavity 131 of the housing 13. That is, with the catalytic converter 11 and the muffler 12 decoupled, the muffler 12 and the exhaust gas recirculation assembly 20 can be integrated, thereby improving the overall integration. Specifically, a portion of the exhaust gas recirculation assembly 20's intake pipe 21 is located outside the housing 13 and connected to the catalytic converter 11, while the other portion is located within the receiving cavity 131 of the housing 13 and connected to the recirculation cooler 22, thus enabling the exhaust gas recirculation assembly 20 to draw gas from the catalytic converter 11. The catalytic converter 11 and the muffler 12 are connected via a connecting pipe 16, thereby achieving decoupling between the catalytic converter 11 and the muffler 12.

[0057] Please refer to Figure 3 The catalytic pipeline 11 is provided with a first catalytic carrier 111 and a second catalytic carrier 112 for catalytic waste gas. The gas intake pipe 21 can be connected to the catalytic pipeline 11 between the first catalytic carrier 111 and the second catalytic carrier 112 to achieve gas intake.

[0058] Understandable Figures 1-3 The gas intake location shown is for illustrative purposes only. Considering actual gas intake pressure and space requirements, the gas intake location can be adjusted as needed, and is not limited to this. Figures 1-3 The location shown.

[0059] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 5 The exhaust assembly 10 includes a housing 13, within which a receiving cavity 131 is formed. An air intake pipe 21 is disposed within the receiving cavity 131. By placing the air intake pipe 21 within the receiving cavity 131, the air intake pipe 21 can be connected to the exhaust assembly 10 located within the receiving cavity 131 for air intake, providing good protection for the air intake pipe 21 and reducing the difficulty of its arrangement.

[0060] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 5The exhaust assembly 10 includes a housing 13, within which a receiving cavity 131 is formed, and a recirculation cooler 22 is disposed within the receiving cavity 131. The recirculation cooler 22, disposed within the receiving cavity 131, can be protected by the housing 13, and the arrangement of the recirculation cooler 22 is simplified, thereby improving the structural compactness.

[0061] It is understood that the air intake pipe 21 and the recirculation cooler 22 can be set at any position in the housing 131 as needed, or the air intake pipe 21 and the cooling gas can be set outside the housing 13 as needed.

[0062] In some embodiments, the exhaust assembly 10 includes a catalytic converter 11 and a muffler 12. The catalytic converter 11 is connected between the exhaust port of the engine 210 and the muffler 12, and at least a portion of the catalytic converter 11 and the muffler 12 are located within a receiving cavity 131. A recirculation cooler 22 is connected to the catalytic converter 11 via an intake pipe 21. The catalytic converter 11 and the muffler 12 extend along a first direction. The intake pipe 21 and the recirculation cooler 22 are located at one end of the first direction within the housing 13. The catalytic converter 11, the intake pipe 21, and the recirculation cooler 22 are arranged sequentially along a second direction, with the recirculation cooler 22 and the muffler 12 arranged along the first direction. The first and second directions are perpendicular to each other.

[0063] Please see Figures 1-2 By placing the gas intake pipe 21 and the recirculation cooler 22 at one end of the housing 13 in the first direction, and arranging the catalytic converter 11, gas intake pipe 21, and recirculation cooler 22 sequentially along the second direction, with the recirculation cooler 22 and the silencer pipe 12 arranged along the first direction, the space utilization within the housing 13 can be improved. Integrating the catalytic converter 11, silencer pipe 12, gas intake pipe 21, and recirculation cooler 22 into a limited space reduces mutual interference, improves space utilization, and forms a modular structure through spatial arrangement, which helps to improve maintenance convenience. In addition, the arrangement of the catalytic converter 11 extending along the first direction and the catalytic converter 11, gas intake pipe 21, and recirculation cooler 22 sequentially along the second direction allows the gas intake pipe 21 to connect to the catalytic converter 11 in the second direction, avoiding conflict with the mainstream exhaust gas flow direction and reducing airflow interference.

[0064] In some embodiments, please refer to Figures 1-3 and Figure 5The exhaust gas recirculation assembly 20 also includes an actuator 24, which is disposed between the recirculation cooler 22 and the exhaust pipe 23. The actuator 24 is used to control the amount of exhaust gas entering the intake port of the engine 210. The actuator 24 can adjust the exhaust gas flow rate, thereby controlling the amount of exhaust gas entering the intake port of the engine 210, adjusting the ratio of fresh air to exhaust gas entering the intake port of the engine 210, and improving the performance of the engine 210.

[0065] For example, the actuator 24 may include a control valve that can control the amount of exhaust gas entering the intake port of the engine 210 by adjusting the opening of the control valve.

[0066] In some embodiments, please refer to Figures 1-3 and Figure 5 The exhaust assembly 10 includes a housing 13, an actuator 24, and an exhaust pipe 23 disposed outside the housing 13. By mounting the actuator 24 on the housing 13 and placing it outside the housing 13, the integration of the actuator 24 and the housing 13 can be improved, the space occupied inside the housing 13 can be reduced, the layout difficulty can be reduced, and the connection between the exhaust pipe 23 and the air intake of the engine 210 can be simplified.

[0067] It is understandable that the actuator 24 and the exhaust pipe 23 may also be located inside the housing 13 or in other locations as needed.

[0068] In some embodiments, please refer to Figure 1 and Figure 2 The exhaust gas recirculation assembly 20 includes an inlet pipe 25 and an outlet pipe 26. The inlet pipe 25 and outlet pipe 26 are used to circulate the coolant within the recirculation cooler 22, allowing the exhaust gas within the recirculation cooler 22 to exchange heat with the coolant and achieve cooling. Through the inlet pipe 25 and outlet pipe 26, the coolant circulates within the recirculation cooler 22, exchanging heat with the high-temperature exhaust gas entering the recirculation cooler 22, thereby cooling the exhaust gas.

[0069] In some embodiments, the inlet pipe 25 is connected in parallel with the engine cooler 220 of the engine 210 to the main inlet pipe 25. By connecting the inlet pipe 25 and the engine cooler 220 of the engine 210 in parallel to the main inlet pipe 25, coolant circulation can be achieved while the piping is integrated, reducing the space occupied by the piping.

[0070] In some embodiments, the outlet pipe 26 is connected in parallel with the engine cooler 220 of the engine 210 to the main outlet pipe 26. Similarly, by connecting the outlet pipe 26 and the engine cooler 220 of the engine 210 in parallel to the main outlet pipe 26, the piping can be integrated, reducing the space occupied by the piping.

[0071] In some embodiments, the outlet pipe 26 is connected to a heat recovery assembly in the vehicle. By connecting the outlet pipe 26 to the heat recovery assembly in the vehicle, heat in the coolant flowing out of the outlet pipe 26 can be recovered and utilized, thereby improving energy efficiency.

[0072] In some embodiments, please refer to Figure 1 and Figure 2 The exhaust assembly 10 includes an intake end 14 and an outlet end 15 disposed opposite to each other, and the exhaust gas recirculation assembly 20 is disposed at the end of the exhaust assembly 10 closer to the intake end 14. The intake end 14 of the exhaust assembly 10 is relatively closer to the outlet of the engine 210. By placing the exhaust gas recirculation assembly 20 at the end of the exhaust assembly 10 closer to the intake end 14, the position of the exhaust gas recirculation assembly 20 can be made closer to the engine 210, which helps to shorten the arrangement of the pipeline in the exhaust gas recirculation assembly 20, improve the response efficiency of the exhaust gas recirculation assembly 20, and also reduce the interference of the exhaust gas recirculation assembly 20 on the outlet of the exhaust assembly 10, thereby improving the integration and compactness of the exhaust assembly 10 and the exhaust gas recirculation assembly 20.

[0073] Please see Figure 1 and Figure 2 The intake end 14 and the outlet end 15 are located at opposite ends of the integrated exhaust system 100 in the first direction. The exhaust gas recirculation assembly 20 is located at the end closer to the intake end 14 and draws gas from the catalytic converter 11 in the exhaust assembly 10. On the one hand, the intake pipe 21 of the exhaust gas recirculation assembly 20 can directly draw gas from the catalytic converter 11, shortening the length of the intake pipe 21. On the other hand, since the exhaust gas recirculation assembly 20 is located close to the engine 210, the exhaust gas cooled by the exhaust gas recirculation assembly 20 can return to the engine 210 through the shorter outlet pipe 23, thereby shortening the overall length of the pipeline in the exhaust gas recirculation assembly 20 and improving the response efficiency.

[0074] According to a second aspect of this application, a powertrain assembly 200 is also provided; please refer to [link to relevant documentation]. Figure 6 The powertrain assembly 200 includes an engine 210 and an integrated exhaust system 100 as described above, which is integrated on one side of the engine 210.

[0075] By integrating the exhaust system 100 onto one side of the engine 210, the distance between the exhaust assembly 10 and the engine 210 can be reduced, the piping arrangement between the exhaust assembly 10 and the exhaust port of the engine 210 can be reduced, and the piping between the exhaust gas recirculation assembly 20 and the intake port of the engine 210 can also be shortened, thus saving piping costs.

[0076] According to a third aspect of this application, a vehicle is also provided, including the integrated exhaust system 100 as described above, and / or the powertrain assembly 200 as described above.

[0077] The vehicle provided in this application embodiment has all the beneficial effects of the integrated exhaust system 100 as described above, which will not be repeated here.

[0078] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An integrated exhaust system characterized by, include: An exhaust assembly for connection to the engine's exhaust port; An exhaust gas recirculation assembly, at least a portion of which is located inside the exhaust assembly.

2. The integrated exhaust system of claim 1, wherein, The exhaust assembly includes a catalytic converter and a muffler. The catalytic converter is connected between the engine outlet and the muffler. The exhaust gas recirculation assembly is connected to either the catalytic converter or the muffler.

3. The integrated exhaust system of claim 2, wherein, The exhaust gas recirculation assembly is connected to one end of the catalytic converter near the engine outlet.

4. The integrated exhaust system of claim 2, wherein, The exhaust assembly includes a housing, and a receiving cavity is formed within the housing; The exhaust gas recirculation assembly is located at least partially within the containment cavity, and at least partially within the catalytic pipeline and / or the silencer pipeline.

5. The integrated exhaust system of claim 1, wherein, The exhaust gas recirculation assembly includes an intake pipe, a recirculation cooler, and an outlet pipe. The recirculation cooler is disposed on the exhaust assembly. The intake pipe is connected between the exhaust assembly and the recirculation cooler so that at least a portion of the exhaust gas in the exhaust assembly enters the recirculation cooler. The recirculation cooler is used to cool the exhaust gas entering it. The outlet pipe is used to connect between the recirculation cooler and the engine intake port so that the cooled exhaust gas enters the engine.

6. The integrated exhaust system of claim 5, wherein, The exhaust assembly includes a housing, and a receiving cavity is formed within the housing; The gas intake pipe is disposed within the receiving cavity, and / or the recirculation cooler is disposed within the receiving cavity.

7. The integrated exhaust system of claim 6, wherein, The exhaust assembly includes a catalytic converter and a muffler. The catalytic converter is connected between the engine outlet and the muffler, and at least a portion of the catalytic converter and the muffler are located within the receiving cavity. The recirculation cooler is connected to the catalytic converter via the intake pipe. The catalytic converter and the silencer extend along a first direction, the gas intake pipe and the recirculation cooler are located at one end of the housing in the first direction, the catalytic converter, the gas intake pipe and the recirculation cooler are arranged sequentially along a second direction, and the recirculation cooler and the silencer are arranged along the first direction; Wherein, the first direction and the second direction are perpendicular to each other.

8. The integrated exhaust system of claim 5, wherein, The exhaust gas recirculation assembly also includes an actuator disposed between the recirculation cooler and the exhaust pipe, the actuator being used to control the amount of exhaust gas entering the engine intake.

9. The integrated exhaust system of claim 8, wherein, The exhaust assembly also includes a housing, the actuator is disposed on the housing, and the actuator is disposed outside the housing.

10. The integrated exhaust system of claim 5, wherein, The waste gas recirculation assembly includes an inlet pipe and an outlet pipe; The inlet pipe and the outlet pipe are used to circulate the coolant in the recirculation cooler, so that the exhaust gas in the recirculation cooler can exchange heat with the coolant for cooling.

11. The integrated exhaust system of claim 10, wherein, The inlet pipe is used to connect in parallel with the engine cooler of the engine to the main inlet pipe; And / or, the outlet pipe is used to connect in parallel with the engine cooler of the engine to the main outlet pipe.

12. The integrated exhaust system of claim 10, wherein, The liquid outlet pipe is connected to the heat recovery assembly in the vehicle.

13. The integrated exhaust system of any of claims 1-12, wherein, The exhaust assembly comprises a gas inlet end and a gas outlet end arranged oppositely, and the exhaust gas recirculation assembly is arranged in the exhaust assembly close to one end of the gas inlet end.

14. A powertrain assembly comprising: An integrated exhaust system as claimed in any one of claims 1 to 13, and an engine. The integrated exhaust system is arranged on one side of the engine.

15. A vehicle characterized by comprising: A power system assembly as claimed in claim 14, and / or an integrated exhaust system as claimed in any one of claims 1 to 13.

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