Exhaust device, engine assembly and vehicle

Abstract

The utility model discloses an exhaust device, an engine assembly and a vehicle. The exhaust device comprises a silencer, a catalyst and at least one exhaust sensor. The catalytic converter is connected with the silencer, the projection of the catalytic converter in the first direction and the projection of the silencer in the first direction at least partially coincide, the exhaust sensor is installed on the outer wall of the catalytic converter, and at least part of the exhaust sensor is located outside the silencer. According to the exhaust device provided by the embodiment of the utility model, the exhaust of the engine can be subjected to noise reduction and catalytic purification treatment, and at least part of the exhaust sensor is arranged outside the silencer, so that the exhaust sensor is convenient to install and maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to an exhaust device, engine assembly and vehicle. BACKGROUND

[0002] In the related art, in order to reduce the exhaust noise of engine and the influence of the exhaust gas on the environment, an exhaust device with a muffler and a catalyst is usually arranged.However, the exhaust sensor installed on the catalyst in the related art is inconvenient to install and maintain due to the unreasonable arrangement position.Therefore, it needs to be improved. SUMMARY

[0003] The utility model at least solves one of the technical problems in the prior art.The utility model provides an exhaust device, which can reduce the noise of the exhaust of the engine and catalytically purify the exhaust, and at least part of the exhaust sensor is arranged outside the muffler, so that the installation and maintenance of the exhaust sensor are facilitated.

[0004] The utility model further provides an engine assembly with the exhaust device.

[0005] The utility model further provides a vehicle with the engine assembly.

[0006] According to the exhaust device of the first aspect of the utility model, the exhaust device comprises: a muffler; a catalyst, which is connected with the muffler, and the projection of the catalyst along a first direction at least partially coincides with the projection of the muffler along the first direction; and at least one exhaust sensor, which is installed on the outer wall of the catalyst, and at least part of the exhaust sensor is located outside the muffler.

[0007] According to the exhaust device of the utility model, the muffler and the catalyst are arranged, the exhaust of the engine can be reduced in noise and catalytically purified, the projection of the catalyst along the first direction at least partially coincides with the projection of the muffler along the first direction, so that the overall structure of the exhaust device is compact, the occupied space is reduced, and at least part of the exhaust sensor is arranged outside the muffler, so that the installation and maintenance of the exhaust sensor are facilitated.

[0008] According to some embodiments of the utility model, the outer wall of the catalyst is provided with a mounting boss, the exhaust sensor is connected with the mounting boss, and the mounting boss has a communication channel that is in communication with the catalytic cavity of the catalyst.

[0009] According to some embodiments of the utility model, the exhaust sensor and the mounting boss are detachably connected.

[0010] According to some embodiments of the present application, the exhaust sensor is threadedly connected with the mounting boss.

[0011] According to some embodiments of the present application, the protruding height of the mounting boss relative to the outer wall of the catalytic converter is 10.5mm-16mm.

[0012] According to some embodiments of the present application, the communication passage extends downwardly in the direction from the end of the mounting boss away from the catalytic cavity to the catalytic cavity.

[0013] According to some embodiments of the present application, the included angle between the central axis of the communication passage and the horizontal plane is not less than 15°.

[0014] According to some embodiments of the present application, the exhaust sensor is multiple, and the multiple exhaust sensors include at least one of a pressure sensor, an oxygen sensor and an EGR sensor.

[0015] According to some embodiments of the present application, the multiple exhaust sensors include a pressure sensor and an oxygen sensor, the pressure sensor is two, the two pressure sensors are respectively a first pressure sensor and a second pressure sensor, and the catalytic converter includes a first catalytic carrier and a second catalytic carrier connected in sequence along the flow direction of the airflow; wherein the first pressure sensor and the oxygen sensor are both installed on the first catalytic carrier, and the second pressure sensor is installed on the second catalytic carrier.

[0016] According to some embodiments of the present application, the catalytic converter is weldedly connected with the muffler.

[0017] According to some embodiments of the present application, the exhaust device includes a fixed support, the fixed support is arranged on the muffler and located outside the catalytic converter, and the fixed support is used for supporting and fixing the catalytic converter.

[0018] According to some embodiments of the present application, the catalytic converter is located outside the muffler as a whole.

[0019] According to some embodiments of the present application, the muffler is formed with a avoiding space, and at least part of the catalytic converter is accommodated in the avoiding space.

[0020] According to some embodiments of the present application, at least part of the catalytic converter is placed transversely.

[0021] According to some embodiments of the present application, the catalytic converter comprises a first catalytic carrier and a second catalytic carrier connected in sequence along the flow direction of the airflow, the first catalytic carrier and the second catalytic carrier are arranged along the up-down direction, and the first catalytic carrier and the second catalytic carrier are both placed horizontally.

[0022] According to some embodiments of the present application, at least part of the catalytic converter is placed vertically.

[0023] According to some embodiments of the present application, part of the catalytic converter is located inside the muffler, and part of the catalytic converter is located outside the muffler.

[0024] According to some embodiments of the present application, the catalytic converter comprises a first catalytic carrier and a second catalytic carrier connected in sequence along the flow direction of the airflow, the first catalytic carrier is located outside the muffler, the second catalytic carrier is located inside the muffler, part of the exhaust sensor is installed on the first catalytic carrier, and part of the exhaust sensor is installed on the second catalytic carrier, and the muffler is provided with a avoiding hole for avoiding the exhaust sensor.

[0025] According to some embodiments of the present application, the catalytic converter is located inside the muffler, and the muffler is provided with a avoiding hole for avoiding the exhaust sensor.

[0026] According to the engine assembly of the second aspect of the present application, the engine assembly comprises: an engine; and the exhaust device according to the first aspect of the present application, wherein the exhaust device is integrated on the engine, and a catalytic inlet of the catalytic converter is connected with an exhaust port of the engine.

[0027] According to the engine assembly of the present application, the exhaust device can be used for reducing noise and catalytic purification of the exhaust of the engine, and the installation and maintenance of the exhaust sensor are convenient; in addition, the exhaust device with the muffler and the catalytic converter is integrated on the engine, so that the engine and the exhaust device are installed on the vehicle body as a whole, which is convenient for installation and makes the structure compact, thereby reducing the occupation of the space of the vehicle body and facilitating the layout of other components in the vehicle body.

[0028] According to some embodiments of the present application, a first connecting flange is arranged at the catalytic inlet, a second connecting flange is arranged at the exhaust port, and the first connecting flange is connected with the second connecting flange.

[0029] According to some embodiments of the present application, the exhaust device is installed on the front side of the engine.

[0030] The vehicle according to the third aspect of the present application comprises the engine assembly according to the second aspect of the present application.

[0031] The vehicle according to the present application can reduce the noise of the exhaust of the engine, catalytically purify the exhaust, and facilitate the installation and maintenance of the exhaust sensor.

[0032] The additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0034] Figure 1 is a perspective view of an engine assembly according to some embodiments of the present application;

[0035] Figure 2 is a front view of the engine assembly in Figure 1

[0036] Figure 3 is a front view of the exhaust device in Figure 1

[0037] Figure 4 is a front view of the exhaust device in Figure 3

[0038] Figure 5 is a side view of the exhaust device in Figure 3

[0039] Figure 6 is a perspective view of an engine assembly according to some other embodiments of the present application;

[0040] Figure 7 is a front view of the engine assembly in Figure 6

[0041] Figure 8 is a perspective view of an exhaust device in Figure 6

[0042] Figure 9 is a front view of the exhaust device in Figure 8 ​​​​​​​

[0043] Figure 10 is Figure 8 a side view of the exhaust device in

[0044] Figure 11 is a perspective view of an engine assembly according to yet some embodiments of the present application;

[0045] Figure 12 is Figure 11 a front view of the engine assembly in

[0046] Figure 13 is Figure 11 a perspective view of the exhaust device in

[0047] Figure 14 is Figure 13 a front view of the exhaust device in

[0048] Figure 15 is Figure 13 a side view of the exhaust device in

[0049] Figure 16 is Figure 13 an internal structure view of the muffler in

[0050] Figure 17 is a perspective view of an engine assembly according to yet some embodiments of the present application;

[0051] Figure 18 is a front view of the engine assembly in Figure 17

[0052] Figure 19 is a perspective view of the exhaust device in Figure 17

[0053] is a front view of the exhaust device in Figure 20 Figure 19

[0054] Figure 21 is a side view of the exhaust device in Figure 19

[0055] is a sectional view along line A-A in Figure 22 Figure 21

[0056] Reference signs:

[0057] 1000, engine assembly;

[0058] 100, exhaust device;

[0059] ​​​​​10 muffler; 11 muffler shell; 110 muffling cavity; 111 muffling outlet; 112 tail pipe; 113 avoidance space; 114 avoidance hole;

[0060] 20 muffling structure; 210 partition; 21 muffling chamber; 211 first muffling chamber; 212 second muffling chamber; 213 third muffling chamber; 214 fourth muffling chamber; 215 fifth muffling chamber; 22 muffling pipe; 221 first muffling pipe; 222 second muffling pipe; 223 third muffling pipe; 224 fourth muffling pipe; 225 fifth muffling pipe; 226 sixth muffling pipe; 23 connecting pipe;

[0061] 30 catalytic converter; 31 catalytic converter shell; 310 catalytic cavity; 311 catalytic inlet; 32 first connecting flange; 33 catalytic outlet; 34 mounting boss; 341 communication passage; 35 first catalytic carrier; 36 second catalytic carrier;

[0062] 40 exhaust sensor; 41 first pressure sensor; 42 second pressure sensor; 43 oxygen sensor;

[0063] 50 fixing support;

[0064] 200 engine; 201 exhaust port; 202 second connecting flange. DETAILED DESCRIPTION

[0065] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0066] Reference is made below to Figures 1-22 The exhaust device 100 and the engine assembly 1000 according to the embodiments of the present application are described.

[0067] Reference is made to Figure 3 , Figure 8 , Figure 13 and Figure 19 The exhaust device 100 according to the first aspect embodiment of the present application comprises a muffler 10, a catalytic converter 30 and at least one exhaust sensor 40.

[0068] The muffler 10 includes a muffler shell 11 having a muffling cavity 110 and a muffling outlet 111 communicating with the muffling cavity 110. The gases discharged by the engine 200 enter the muffling cavity 110 of the muffler 10, and the exhaust noise can be reduced. The catalyst 30 includes a catalyst shell 31 having a catalytic cavity 310 communicating with the muffling cavity 110. A catalyst can be arranged in the catalytic cavity 310, which can catalytically decompose harmful substances in the gases discharged by the engine 200, has a purifying effect on the gases discharged by the engine 200, and reduces the pollution of the environment by the discharged gases.

[0069] For example, the catalyst shell 31 has a catalytic inlet 311 and a catalytic outlet 33, and the catalytic cavity 310 communicates the catalytic inlet 311 with the catalytic outlet 33, and the catalytic inlet 311 is used to connect with the exhaust port 201 of the engine 200. The gases discharged by the engine 200 can enter the catalytic cavity 310 of the catalyst 30 from the exhaust port 201 and the catalytic inlet 311.

[0070] For example, the catalytic cavity 310 can communicate with the muffling cavity 110 through the catalytic outlet 33, and the gases discharged by the engine 200 can be discharged into the muffling cavity 110 through the catalytic outlet 33 after being purified by the catalyst 30, and can be discharged through the muffling outlet 111 after being noise-reduced in the muffling cavity 110.

[0071] The catalyst 30 is connected with the muffler 10, and the projection of the catalyst 30 along the first direction at least partially overlaps the projection of the muffler 10 along the first direction, wherein the first direction can be the Z direction of the vehicle, for example, the first direction can refer to the up-down direction in the drawings. For example, the projection of the catalyst 30 along the first direction at least partially overlaps the projection of the muffler 10 along the first direction; for example, the projection of the catalyst 30 along the first direction completely overlaps the projection of the muffler 10 along the first direction. The projection of the catalyst 30 along the first direction at least partially overlaps the projection of the muffler 10 along the first direction can also include the following cases: for example, the projection of the catalyst 30 along the first direction is completely located within the projection of the muffler 10 along the first direction; for example, the projection of the catalyst 30 along the first direction is partially located within the projection of the muffler 10 along the first direction, and the projection of the catalyst 30 along the first direction is partially located outside the projection of the muffler 10 along the first direction.

[0072] By making the projection of the catalyst 30 along the first direction at least partially overlap the projection of the muffler 10 along the first direction, the overall arrangement of the catalyst 30 and the muffler 10 can be compact, and the overall structure of the exhaust device 100 can be compact, which is beneficial to reduce the space occupied by the exhaust device 100.

[0073] The exhaust sensor 40 is at least one, for example, the exhaust sensor 40 can be one, and the exhaust sensor 40 can also be multiple. The exhaust sensor 40 is installed on the outer wall of the catalyst 30, and the exhaust sensor 40 is used to detect the gas discharged by the engine 200, so that the engine 200 can be controlled to work better according to the detection result of the exhaust sensor 40, and harmful gas substances in the gas discharged by the engine 200 can be reduced, and environmental pollution can be reduced.

[0074] At least part of the exhaust sensor 40 is located outside the muffler 10. For example, the main part of the exhaust sensor 40 can be located outside the muffler 10, or the entire exhaust sensor 40 can be located outside the muffler 10. By arranging the exhaust sensor 40 outside the muffler 10, the exhaust sensor 40 does not occupy the space inside the muffler 10, and the installation of the exhaust sensor 40 is facilitated, and the installation of the exhaust sensor 40 can be avoided due to the limitation of the space inside the muffler 10. In addition, when the exhaust sensor 40 is maintained, since the exhaust sensor 40 is installed on the outer wall of the catalyst 30 and located outside the muffler 10, the muffler 10 is maintained, and compared with arranging the exhaust sensor 40 in the muffler 10, the exhaust sensor 40 does not need to be maintained after the muffler shell 11 is removed.

[0075] According to the exhaust device 100 of the embodiment of the utility model, by arranging the muffler 10 and the catalyst 30, the exhaust of the engine 200 can be treated by noise reduction and catalytic purification, by making the projection of the catalyst 30 along the first direction at least partially coincide with the projection of the muffler 10 along the first direction, the overall structure of the exhaust device 100 is compact, the occupied space is reduced, and by arranging at least part of the exhaust sensor 40 outside the muffler 10, the installation and maintenance of the exhaust sensor 40 are facilitated.

[0076] According to some embodiments of the utility model, referring to Figures 4-5 , Figures 9-10 , Figures 14-15 and Figures 20-22 , the outer wall of the catalyst 30 is provided with a mounting boss 34, the outer wall of the catalyst shell 31 is provided with a mounting boss 34, the exhaust sensor 40 is connected with the mounting boss 34, and the mounting boss 34 has a communication channel 341 communicated with the catalytic cavity 310. By arranging the mounting boss 34 on the outer wall of the catalyst 30, the exhaust sensor 40 is conveniently mounted and fixed to the catalyst 30 through the mounting boss 34.

[0077] In the process of the engine 200 working, the exhaust gas enters the catalytic cavity 310 of the catalytic converter 30, and a small amount of gas entering the catalytic cavity 310 can flow into the communication passage 341 of the mounting boss 34. Since the exhaust gas sensor 40 is connected with the mounting boss 34, the exhaust gas sensor 40 can be in contact with the gas in the communication passage 341, so that the gas discharged from the engine 200 into the catalytic cavity 310 can be detected.

[0078] The mounting boss 34 can be integrally formed with the catalytic converter shell 31, or the mounting boss 34 can be welded to the catalytic converter shell 31.

[0079] According to some embodiments of the present application, the exhaust gas sensor 40 is detachably connected with the mounting boss 34. By detachably connecting the exhaust gas sensor 40 with the mounting boss 34, the maintenance and replacement of the exhaust gas sensor 40 are facilitated.

[0080] According to some embodiments of the present application, the exhaust gas sensor 40 is threadedly connected with the mounting boss 34. By threadedly connecting the exhaust gas sensor 40 with the mounting boss 34, the detachable connection of the exhaust gas sensor 40 with the mounting boss 34 is realized, and the connection of the exhaust gas sensor 40 with the mounting boss 34 is stable and reliable.

[0081] According to some embodiments of the present application, with reference to Figure 22 The protruding height h of the mounting boss 34 relative to the outer wall of the catalytic converter 30 is 10.5mm-16mm. For example, the protruding height h of the mounting boss 34 relative to the catalytic converter 30 can be 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm, 15.5mm, 16mm, etc.

[0082] By setting the protruding height h of the mounting boss 34 relative to the catalytic converter 30 to be not less than 10.5mm, the connection length of the exhaust gas sensor 40 with the mounting boss 34 can meet the requirements, so that the stability and reliability of the connection of the exhaust gas sensor 40 with the mounting boss 34 are ensured. By setting the protruding height h of the mounting boss 34 relative to the catalytic converter 30 to be not more than 16mm, the problem of inaccurate detection due to the large distance between the exhaust gas sensor 40 and the catalytic cavity 310 can be reduced or avoided, so that the detection result of the exhaust gas sensor 40 is more accurate.

[0083] According to some embodiments of the present application, with reference to Figure 22In the direction from the end of the mounting boss 34 away from the catalytic cavity 310 to the catalytic cavity 310, the communication passage 341 extends downwardly. By making the communication passage 341 in the mounting boss 34 extend downwardly in the direction adjacent to the catalytic cavity 310, the condensed water formed by the condensation of the gas entering the communication passage 341 flows downwardly along the communication passage 341 into the catalytic cavity 310 under its own gravity, reducing or avoiding the condensed water remaining in the communication passage 341 to affect the accuracy of the detection results of the exhaust sensor 40.

[0084] According to some embodiments of the present application, referring to Figure 22 , the included angle a between the central axis of the communication passage 341 and the horizontal plane is not less than 15°. By making the communication passage 341 in the mounting boss 34 extend downwardly in the direction adjacent to the catalytic cavity 310, and at the same time making the included angle a between the central axis of the communication passage 341 and the horizontal plane not less than 15°, the condensed water formed in the communication passage 341 can more smoothly flow into the catalytic cavity 310 under its own gravity, and the condensed water in the communication passage 341 can be better reduced.

[0085] According to some embodiments of the present application, referring to Figures 4-5 , Figures 9-10 , Figures 14-15 and Figures 20-22 , the exhaust sensor 40 is multiple, and the multiple exhaust sensors 40 include at least one of a pressure sensor, an oxygen sensor 43, and an EGR (Exhaust Gas Recirculation) sensor. The pressure sensor can be used to detect the exhaust pressure, and the exhaust pressure sensor can help the engine 200 to realize more accurate fuel injection and ignition control, thereby improving the performance and fuel economy of the engine 200 and reducing exhaust emissions. The oxygen sensor 43 monitors the oxygen content in the exhaust gas and sends a feedback signal to the electronic control unit (ECU), helping to adjust the fuel injection amount to ensure that the proportion of the mixture is maintained in an ideal state, thereby optimizing the air-fuel ratio, improving fuel economy, and reducing harmful substance emissions. The EGR sensor provides a position signal of the EGR valve to the electronic control unit (ECU) to provide data support for the exhaust gas recirculation amount, ensuring efficient operation of the engine and reducing emissions pollution.

[0086] By setting the exhaust sensor 40 to be multiple and the multiple exhaust sensors 40 to include at least one of a pressure sensor, an oxygen sensor 43, and an EGR sensor, the exhaust of the engine 200 can be better monitored, and the performance and fuel economy of the engine 200 can be better improved, and exhaust emissions can be reduced.

[0087] According to some embodiments of the present application, referring to Figures 4-5 , Figures 9-10 ,​Figures 14-15 and Figures 20-22 The plurality of exhaust gas sensors 40 include a pressure sensor and an oxygen sensor 43, the pressure sensor is two, the two pressure sensors are respectively a first pressure sensor 41 and a second pressure sensor 42, and the catalytic converter 30 includes a first catalytic carrier 35 and a second catalytic carrier 36 connected in sequence along the flow direction of the gas flow; wherein the first pressure sensor 41 and the oxygen sensor 43 are both mounted on the first catalytic carrier 35, and the second pressure sensor 42 is mounted on the second catalytic carrier 36. The gas emitted by the engine 200 enters the catalytic cavity 310 through the catalytic inlet 311 of the catalytic converter 30, and then flows through the first catalytic carrier 35 and then flows through the second catalytic carrier 36. The gas flowing through the first catalytic carrier 35 and the second catalytic carrier 36 is catalytically decomposed to purify the gas and reduce harmful substances in the exhaust gas.

[0088] By arranging the catalytic converter 30 as the first catalytic carrier 35 and the second catalytic carrier 36 arranged in sequence along the flow direction of the gas flow, and arranging the first pressure sensor 41 and the oxygen sensor 43 on the first catalytic carrier 35, the exhaust gas pressure of the engine 200 and the oxygen content in the exhaust gas can be monitored; and the second pressure sensor 42 is arranged on the second catalytic carrier 36 on the downstream side, and by detecting the pressure at this position, it can be judged whether the exhaust gas flows smoothly in the catalytic cavity 310, for example, whether the problem of excessive carbon deposition causing blockage occurs.

[0089] According to some embodiments of the present application, the catalytic converter 30 is welded to the muffler 10, for example, the catalytic converter shell 31 is welded to the muffler shell 11. By welding the catalytic converter 30 to the muffler 10, the catalytic converter 30 is conveniently mounted on the muffler 10, and is stable and reliable in installation.

[0090] According to some embodiments of the present application, the catalytic converter 30 is welded to the muffler 10, for example, the catalytic converter shell 31 is welded to the muffler shell 11. By welding the catalytic converter 30 to the muffler 10, the catalytic converter 30 is conveniently mounted on the muffler 10, and is stable and reliable in installation. Figure 4 , Figures 7-9 , Figures 12-14 , Figures 18-20 The exhaust device 100 comprises a fixed support 50, the fixed support 50 is arranged on the muffler and located outside the catalytic converter 30, for example, the fixed support 50 is arranged on the muffler shell 11, and the fixed support 50 is used to support and fix the catalytic converter 30. By arranging the fixed support 50 on the muffler 10, the fixed support 50 is used to support and fix the catalytic converter 30, which can further improve the stability of the installation of the catalytic converter 30.

[0091] According to some embodiments of the present application, with reference to Figure 16 and Figure 22The muffler 10 comprises a muffling structure 20 arranged in the muffling cavity 110, the muffling structure 20 comprises a plurality of baffles 210 and a plurality of muffling pipes 22, the plurality of baffles 210 are arranged in the muffling cavity 110 to divide the muffling cavity 110 into a plurality of muffling chambers 21, and the plurality of muffling pipes 22 are used to communicate different muffling chambers 21. By arranging the muffling structure 20 in the muffling cavity 110 to comprise the plurality of baffles 210 and the plurality of muffling pipes 22, the muffling cavity 110 is divided into the plurality of muffling chambers 21 by the plurality of baffles 210, and the plurality of muffling pipes 22 are used to communicate different muffling chambers 21, after the gas catalytically decomposed by the catalytic converter 30 enters the muffling cavity 110, flows through the plurality of muffling chambers 21 and the plurality of muffling pipes 22, because the flow area of the muffling chamber 21 is much larger than that of the muffling pipe 22, the flow area changes many times during the flow of the gas in the muffling cavity 110, the gas flow is expanded many times, and good noise reduction effect can be achieved.

[0092] For example, the plurality of baffles 210 arranged in the muffling cavity 110 can be arranged in the up-down direction in sequence, so that the muffling cavity 110 can be divided into a plurality of muffling chambers 21 in the up-down direction in sequence.

[0093] According to some embodiments of the utility model, referring to Figure 22 The plurality of muffling chambers 21 comprises a first muffling chamber 211, a second muffling chamber 212, a third muffling chamber 213 and a fourth muffling chamber 214, and the first muffling chamber 211, the second muffling chamber 212, the third muffling chamber 213 and the fourth muffling chamber 214 can be arranged in sequence in the direction from top to bottom. The plurality of muffling pipes 22 comprises a first muffling pipe 221, a second muffling pipe 222, a third muffling pipe 223, a fourth muffling pipe 224 and a fifth muffling pipe 225. The first muffling pipe 221 has a first muffling passage therein, and the first muffling pipe 221 is connected with the catalytic outlet 33, for example, the first muffling pipe 221 and the catalytic outlet 33 can be connected through the connecting pipe 23, and the connecting pipe 23 can be in the shape of U. The catalytic outlet 33 communicates the catalytic cavity 310 with the first muffling passage, the first muffling passage communicates the second muffling chamber 212 with the catalytic outlet 33 and communicates the fourth muffling chamber 214 with the catalytic outlet 33; the second muffling pipe 222 has a second muffling passage therein, and the second muffling passage communicates the second muffling chamber 212 with the first muffling chamber 211. The third muffling pipe 223 has a third muffling passage therein, and the third muffling passage communicates the fourth muffling chamber 214 with the first muffling chamber 211; the fourth muffling pipe 224 has a fourth muffling passage therein, and the fourth muffling passage communicates the first muffling chamber 211 with the third muffling chamber 213; the fifth muffling pipe 225 has a fifth muffling passage therein, and the fifth muffling passage communicates the third muffling chamber 213 with the muffling outlet 111.

[0094] In the process that the gas catalytically decomposed by the catalytic converter 30 enters the muffling cavity 110, the gas first flows into the second muffling chamber 212 and the fourth muffling chamber 214 through the first muffling passages, respectively, the gas flowing into the second muffling chamber 212 flows into the first muffling chamber 211 through the second muffling passage, the gas flowing into the fourth muffling chamber 214 flows into the first muffling chamber 211 through the third muffling passage, the gas flowing into the first muffling chamber 211 flows into the third muffling chamber 213 through the fourth muffling passage, and the gas flowing into the third muffling chamber 213 is discharged through the fifth muffling passage and the muffling outlet 111, so that the noise reduction treatment of the gas flow is realized.

[0095] For example, the tail pipe 112 can be connected at the muffling outlet 111, and the gas flow reduced in noise by the muffler 10 can be discharged through the tail pipe 112.

[0096] The first muffling pipe 221, the second muffling pipe 222, the third muffling pipe 223 and the fourth muffling pipe 224 can be straight pipes, which extend in the up-down direction.

[0097] According to some embodiments of the present application, referring to Figure 22 The plurality of muffling chambers 21 further comprises a fifth muffling chamber 215, for example, the first muffling chamber 211, the second muffling chamber 212, the third muffling chamber 213, the fourth muffling chamber 214 and the fifth muffling chamber 215 can be arranged in sequence in the up-down direction. The plurality of muffling pipes 22 further comprises a sixth muffling pipe 226, the sixth muffling pipe 226 has a sixth muffling passage therein, and the sixth muffling passage communicates the third muffling chamber 213 and the fifth muffling chamber 215. Part of the gas flowing into the third muffling chamber 213 can flow into the fifth muffling chamber 215 through the sixth muffling passage, and the gas flow reduced in noise by the fifth muffling chamber 215 flows back to the third muffling chamber 213 through the sixth muffling passage. The fifth muffling chamber 215 serves as a broadband muffling chamber 21, which can reduce the high-frequency noise generated by the rapid vibration of the engine 200.

[0098] The sixth muffling pipe 226 can be a straight pipe, which extends in the up-down direction.

[0099] According to some embodiments of the present application, referring to Figures 1-10 The catalytic converter 30 is located outside the muffler 10 as a whole, for example, the catalytic converter 30 is located outside the muffler shell 11 as a whole. By arranging the catalytic converter 30 outside the muffler 10 as a whole, the installation of the exhaust gas sensor 40 is more convenient, for example, the exhaust gas sensor 40 does not need to pass through the muffler 10 and does not need to be provided with a relief hole 114 for avoiding the exhaust gas sensor 40 on the muffler 10.

[0100] For example, when the exhaust device 100 includes the fixed support 50 described above, the fixed support 50 is arranged outside the muffler 10 and connected with the muffler 10, for example, the fixed support 50 is arranged outside the muffler shell 11 and connected with the muffler shell 11.

[0101] According to some embodiments of the present application, referring to Figures 1-10 The muffler 10 is formed with a clearance space 113 outside, for example, the muffler shell 11 is formed with the clearance space 113 outside, and at least part of the catalyst 30 is accommodated in the clearance space 113. By forming the clearance space 113 outside the muffler 10 and accommodating at least part of the catalyst 30 in the clearance space 113, the overall structure of the exhaust device 100 can be compact and the space occupation can be reduced.

[0102] According to some embodiments of the present application, referring to Figures 1-5 At least part of the catalyst 30 is placed horizontally. By placing at least part of the catalyst 30 horizontally, the upper space of the muffler 10 can be utilized, and the structure can be compact.

[0103] According to some embodiments of the present application, referring to Figures 1-5 The catalyst 30 includes a first catalytic carrier 35 and a second catalytic carrier 36 connected in sequence along the flow direction of the airflow, the first catalytic carrier 35 and the second catalytic carrier 36 are arranged in the up-down direction, and the first catalytic carrier 35 and the second catalytic carrier 36 are both placed horizontally. By arranging the first catalytic carrier 35 and the second catalytic carrier 36 of the catalyst 30 in the up-down direction and placing the first catalytic carrier 35 and the second catalytic carrier 36 horizontally, the upper space of the muffler 10 can be fully utilized, and the structure can be compact.

[0104] According to some embodiments of the present application, referring to Figures 6-10 At least part of the catalyst 30 is placed vertically. By placing at least part of the catalyst 30 vertically, the side space of the muffler 10 can be utilized, and the structure can be compact.

[0105] According to some embodiments of the present application, referring to Figures 11-16 Part of the catalyst 30 is located inside the muffler 10, and part of the catalyst 30 is located outside the muffler 10. For example, part of the catalyst 30 is located inside the muffler shell 11, and part of the catalyst 30 is located outside the muffler shell 11. By locating part of the catalyst 30 inside the muffler 10, the space inside the muffler 10 can be utilized, and by locating part of the catalyst 30 outside the muffler 10, the space outside the muffler 10 can be utilized, and the overall structure can be compact.

[0106] According to some embodiments of the present application, referring to Figures 11-16The catalytic converter 30 comprises a first catalytic carrier 35 and a second catalytic carrier 36 connected in sequence along the flow direction of the airflow, the first catalytic carrier 35 is located outside the muffler 10, for example, the first catalytic carrier 35 is located outside the muffler shell 11, the second catalytic carrier 36 is located inside the muffler 10, for example, the second catalytic carrier 36 is located inside the muffler shell 11, a partial exhaust sensor 40 is installed on the first catalytic carrier 35, a partial exhaust sensor 40 is installed on the second catalytic carrier 36, the muffler 10 is provided with a avoiding hole 114 for avoiding the partial exhaust sensor 40, for example, the muffler shell 11 is provided with a avoiding hole 114 for avoiding the partial exhaust sensor 40. Since the first catalytic carrier 35 is located outside the muffler 10, the exhaust sensor 40 installed on the first catalytic carrier 35 is more convenient and does not need to be provided with a corresponding avoiding hole 114 on the muffler 10; since the second catalytic carrier 36 is located inside the muffler 10, the exhaust sensor 40 installed on the second catalytic carrier 36 needs to be provided with a corresponding avoiding hole 114 on the muffler 10 to facilitate the installation of the exhaust sensor 40 installed on the second catalytic carrier 36.

[0107] For example, when the exhaust device 100 comprises the fixed support 50 described above, the fixed support 50 can be arranged inside the muffler shell 11 and connected with the muffler shell 11.

[0108] According to some embodiments of the present application, referring to Figures 17-22 The catalytic converter 30 is located inside the muffler 10 as a whole, and the muffler 10 is provided with a avoiding hole 114 for avoiding the partial exhaust sensor 40. For example, the catalytic converter 30 is located inside the muffler shell 11 as a whole, and the muffler shell 11 is provided with a avoiding hole 114 for avoiding the partial exhaust sensor 40. The catalytic converter 30 is located inside the muffler 10 as a whole, which can make the overall structure compact, and the avoiding hole 114 for avoiding the partial exhaust sensor 40 provided on the muffler 10 facilitates the installation of the partial exhaust sensor 40.

[0109] For example, when the exhaust device 100 comprises the fixed support 50 described above, the fixed support 50 can be arranged inside the muffler shell 11 and connected with the muffler shell 11.

[0110] Referring to Figures 1-3 , Figures 6-8 , Figures 11-13 and Figures 17-19 According to the engine assembly 1000 of the second aspect of the present application, the engine assembly 1000 comprises an engine 200 and an exhaust device 100 for the engine 200 according to the first aspect of the present application described above, the exhaust device 100 is integrated on the engine 200, and the catalytic inlet 311 of the catalytic converter 30 is connected with the exhaust port 201 of the engine 200.

[0111] For example, the engine 200 is arranged in a front compartment of the vehicle body, and by integrating the exhaust device 100 on the engine 200, the space in the front compartment can be fully utilized.

[0112] According to the engine assembly 1000 of the embodiment of the utility model, by arranging the above-mentioned exhaust device 100, the exhaust of the engine 200 can be subjected to noise reduction and catalytic purification treatment, and the installation and maintenance of the exhaust sensor 40 are facilitated; in addition, by integrating the exhaust device 100 with the muffler 10 and the catalyst 30 on the engine 200, the engine 200 and the exhaust device 100 are installed as a whole to the vehicle body, which is convenient for installation and makes the structure compact, and is conducive to reducing the occupation of the space of the vehicle body and facilitating the layout of other components in the vehicle body.

[0113] According to some embodiments of the utility model, referring to Figures 1-3 , Figures 6-8 , Figures 11-13 and Figures 17-19 , the first connecting flange 32 is arranged at the catalytic inlet 311 of the catalyst 30, and the second connecting flange 202 is arranged at the exhaust port 201 of the engine 200, which facilitates the connection of the exhaust port 201 of the engine 200 and the catalytic inlet 311.

[0114] According to some embodiments of the utility model, referring to Figures 1-2 , Figures 6-7 , Figures 11-12 and Figures 17-18 , the exhaust device 100 is arranged at the front side of the engine 200. By arranging the exhaust device 100 at the front side of the engine 200, the space at the front side of the engine 200 can be fully utilized, and the space utilization in the vehicle body is improved.

[0115] According to the vehicle of the third aspect of the embodiment of the utility model, the engine assembly 1000 according to the second aspect of the embodiment of the utility model is arranged.

[0116] According to the vehicle of the embodiment of the utility model, by arranging the above-mentioned engine assembly 1000, the exhaust of the engine 200 can be subjected to noise reduction and catalytic purification treatment, and the installation and maintenance of the exhaust sensor 40 are facilitated; in addition, by integrating the exhaust device 100 with the muffler 10 and the catalyst 30 on the engine 200, the engine 200 and the exhaust device 100 are installed as a whole to the vehicle body, which is convenient for installation and makes the structure compact, and is conducive to reducing the occupation of the space of the vehicle body and facilitating the layout of other components in the vehicle body.

[0117] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a particular orientation, structure and operation, and therefore cannot be understood as limiting the utility model.

[0118] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0119] In the description of the utility model, "multiple" means two or more.

[0120] In the description of the utility model, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0121] In the description of the utility model, "above", "upper" and "on" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature.

[0122] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the description of the utility model, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0123] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. An exhaust device characterized by, The muffler is provided with a catalytic converter connected therewith, a projection of the catalytic converter along a first direction at least partially coincides with a projection of the muffler along the first direction, and at least one exhaust sensor is mounted on an outer wall of the catalytic converter and at least a part of the exhaust sensor is located outside the muffler. The catalytic converter is provided with a mounting boss on an outer wall thereof, the exhaust sensor is connected with the mounting boss, and the mounting boss has a communication passage in communication with a catalytic cavity of the catalytic converter. The exhaust sensor is detachably connected with the mounting boss. The exhaust sensor is threadedly connected with the mounting boss.

2. The exhaust apparatus according to claim 1, characterized by The protruding height of the mounting boss relative to the outer wall of the catalytic converter is 10.5-16 mm.

3. The exhaust apparatus according to claim 2, characterized by In a direction from an end of the mounting boss away from the catalytic cavity to the catalytic cavity, the communication passage extends downwardly and obliquely.

4. The exhaust apparatus according to claim 3, characterized by An included angle between a central axis of the communication passage and a horizontal plane is not less than 15°.

5. The exhaust apparatus according to claim 2, characterized by The exhaust sensor is at least one of a pressure sensor, an oxygen sensor and an EGR sensor.

6. The exhaust apparatus according to claim 2, characterized by The exhaust sensor includes a pressure sensor and an oxygen sensor, the pressure sensor is two, the two pressure sensors are respectively a first pressure sensor and a second pressure sensor, and the catalytic converter includes a first catalytic carrier and a second catalytic carrier connected in sequence along a flow direction of air flow.

7. The exhaust apparatus according to claim 6, characterized by The first pressure sensor and the oxygen sensor are both mounted on the first catalytic carrier, and the second pressure sensor is mounted on the second catalytic carrier.

8. The exhaust apparatus according to claim 1, characterized by The catalytic converter is welded with the muffler.

9. The exhaust apparatus according to claim 8, characterized by The muffler is provided with a fixing support located outside the catalytic converter and used for supporting and fixing the catalytic converter. The catalytic converter is located outside the muffler.

10. The exhaust apparatus according to claim 1, characterized by The muffler is provided with a relief space, and at least a part of the catalytic converter is accommodated in the relief space.

11. The exhaust apparatus according to claim 1, characterized by At least a part of the catalytic converter is placed horizontally. The catalytic converter includes a first catalytic carrier and a second catalytic carrier connected in sequence along a flow direction of air flow, the first catalytic carrier and the second catalytic carrier are arranged along an up-down direction, and the first catalytic carrier and the second catalytic carrier are both placed horizontally.

12. The exhaust apparatus according to any one of claims 1-11, characterized by, At least a part of the catalytic converter is placed vertically.

13. The exhaust apparatus according to claim 12, characterized by A part of the catalytic converter is located inside the muffler, and a part of the catalytic converter is located outside the muffler.

14. The exhaust apparatus of claim 12, wherein The catalytic converter includes a first catalytic carrier and a second catalytic carrier connected in sequence along a flow direction of air flow, the first catalytic carrier is located outside the muffler, the second catalytic carrier is located inside the muffler, a part of the exhaust sensor is mounted on the first catalytic carrier, a part of the exhaust sensor is mounted on the second catalytic carrier, and the muffler is provided with a relief hole used for avoiding the exhaust sensor.

15. The exhaust apparatus of claim 14, wherein The catalytic converter is located inside the muffler, and the muffler is provided with a relief hole used for avoiding the exhaust sensor.

16. The exhaust apparatus of claim 12, wherein The engine is provided with a catalytic converter connected therewith, a projection of the catalytic converter along a first direction at least partially coincides with a projection of the muffler along the first direction, and at least one exhaust sensor is mounted on an outer wall of the catalytic converter and at least a part of the exhaust sensor is located outside the muffler.

17. The exhaust apparatus according to any one of claims 1-11, characterized by, ​ 18. The exhaust apparatus of claim 17, wherein ​ 19. The exhaust apparatus according to any one of claims 1-11, characterized by, ​ 20. An engine assembly characterized by, ​ ​ The exhaust device according to any one of claims 1-19, integrated on the engine, the catalytic inlet of the catalyst being connected with the exhaust port of the engine.

21. The engine assembly of claim 20, wherein, A first connecting flange is arranged at the catalytic inlet, and a second connecting flange is arranged at the exhaust port, the first connecting flange being connected with the second connecting flange.

22. An engine assembly according to claim 20 or 21, characterised in that, The exhaust device is installed at the front side of the engine.

23. A vehicle characterized by comprising: Comprising: The engine assembly according to any one of claims 20-22.

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