Exhaust manifold, engine, and vehicle
The exhaust manifold, designed with a combination of central and side pipes, solves the casting and transportation difficulties caused by excessive exhaust manifold length, achieving the effects of simplified installation, reduced costs, and improved sealing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GEELY HLDG GRP CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-07
AI Technical Summary
Existing exhaust manifolds are too long because they need to connect multiple exhaust ports, which makes casting and transportation difficult.
It adopts a combination design of central and side pipes, and achieves simple connection through connectors. The central and side pipes can be cast separately, reducing casting costs, and the small size makes it easy to transport.
It simplifies the installation process, reduces casting costs, facilitates packaging and transportation, and improves the sealing and connection stability of the exhaust manifold.
Smart Images
Figure CN224469206U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle exhaust, and more particularly to an exhaust manifold, an engine, and a vehicle. Background Technology
[0002] The exhaust manifold is part of an internal combustion engine. Its main function is to collect the exhaust gases from each cylinder and guide them into the exhaust system. In a multi-cylinder engine, each cylinder produces exhaust gases, which need to be effectively guided out to make room for a fresh air-fuel mixture, thus ensuring that the engine can operate continuously and efficiently.
[0003] The exhaust manifold connects to the engine's cylinder head. Each group of cylinders corresponds to one or more exhaust ports, which converge into one or more pipes through the exhaust manifold, ultimately leading to the vehicle's exhaust system. A well-designed exhaust manifold can reduce exhaust resistance, helping to improve engine performance and fuel efficiency, while also reducing noise and harmful emissions. In some high-performance vehicles, optimized exhaust manifold design can also improve engine responsiveness and power output characteristics.
[0004] However, since it needs to connect multiple exhaust ports, its length needs to be matched, which leads to its excessive length and makes casting and transportation difficult. Utility Model Content
[0005] The purpose of this application is to provide an exhaust manifold, an engine, and a vehicle to solve the aforementioned problems.
[0006] According to a first aspect of the embodiments of this application, an exhaust manifold is provided, the exhaust manifold comprising:
[0007] A central duct, wherein the central duct includes a through-type central air passage;
[0008] A side pipe, the side pipe including a through side air passage, the side air passage including a side air inlet and a side air outlet, the side pipe having a connector along its side, the side air outlet being located at the connector, the connector being inserted into the central air passage so that the central air passage and the side air passage are connected;
[0009] The gas enters the side air passage through the side air inlet and then enters the middle air passage through the side air outlet.
[0010] In some embodiments, the central duct includes a connecting unit and a protruding unit, and the connecting unit and the protruding unit are arranged at an angle, and the central air passage is disposed within the connecting unit and the protruding unit;
[0011] The central air passage includes a central connection port and a central air outlet. The central connection port is located at the side end of the connecting unit, and the connector is inserted into the connecting unit through the central connection port. The central air outlet is located at the side end of the protruding unit.
[0012] The exhaust manifold includes a reinforcing rib, which is disposed between the connecting unit and the protruding unit to reinforce the central pipe.
[0013] In some embodiments, the reinforcing rib includes an interconnected body unit and an outer unit, with both ends of the outer unit connected to the connecting unit and the protruding unit respectively to form a fixed triangle.
[0014] In some embodiments, the body unit is recessed inward to form a groove, the groove being disposed within the fixed triangle.
[0015] In some embodiments, the side pipe is provided with a connecting part for connecting to a cylinder, the side air outlet is provided in the connecting part, and a guide plate is provided inside the connecting part, the guide plate being provided along the extending direction of the side air passage;
[0016] And / or,
[0017] The central pipe is provided with a connecting part and a central air inlet. The connecting part is used to connect with the cylinder, and the central air inlet is used to allow external gas to flow into the central air passage. The central air inlet is located in the connecting part, and a guide plate is provided inside the connecting part. The guide plate is arranged along the extension direction of the central air passage.
[0018] In some embodiments, along the extending direction of the side air passage, the length of the guide plate is greater than or equal to 10 mm and less than or equal to 60 mm.
[0019] And / or,
[0020] Along the extension direction of the central air passage, the length of the diversion plate is greater than or equal to 10 mm and less than or equal to 60 mm.
[0021] In some embodiments, the central pipe includes a fixing unit, which includes a fixing groove and a fixing pin. The fixing groove has a side opening, the diameter of which is larger than the diameter of the fixing pin.
[0022] In some embodiments, the side opening that is away from the protruding unit is defined as the away side, and the central pipe includes the protruding unit;
[0023] Along the length direction, the length from the opposite edge to the protruding unit is greater than the length of the fixing pin.
[0024] In some embodiments, the connector is configured to fit with the central air passage with a clearance.
[0025] And / or,
[0026] The difference between the diameter of the central air passage and the diameter of the connector is greater than or equal to 0.005 mm and less than or equal to 0.2 mm.
[0027] According to a second aspect of the embodiments of this application, an engine is provided, including an exhaust manifold as described in any of the above embodiments.
[0028] According to a third aspect of the embodiments of this application, a vehicle is provided, including an engine as described in the above embodiments.
[0029] The beneficial technical effects of the technical solutions provided in this application are:
[0030] The system employs a central duct and side ducts. The central duct includes a through-type central air passage, and the side ducts include through-type side air passages, each with a side inlet and outlet. A connector is located along the side of the side duct, and the outlet is positioned at the connector. The connector is inserted into the central air passage, connecting the two passages. Gas enters the side air passage through the side inlet and then enters the central air passage through the side outlet.
[0031] The aforementioned side pipes are equipped with connectors, which can be easily inserted into the central air passage for connection. This assembly process is simple and convenient, saving significant installation steps. Furthermore, because a combination of central and side pipes is used, they can be cast individually, thus reducing casting costs. Additionally, the small size of individual central or side pipes facilitates packaging and transportation. Attached Figure Description
[0032] 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 accompanying 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.
[0033] Figure 1 This is a schematic diagram of an exhaust manifold according to an embodiment of this application.
[0034] Figure 2This is a structural schematic diagram of an exhaust manifold from another angle, according to an embodiment of this application.
[0035] Figure 3 This is a schematic diagram of the exhaust manifold from another angle according to an embodiment of this application.
[0036] Figure 4 This is a schematic cross-sectional view of an exhaust manifold according to an embodiment of this application.
[0037] Explanation of reference numerals in the attached figures
[0038] Exhaust manifold 10
[0039] Central Pipeline 100
[0040] Central air passage 110
[0041] Central air intake 111
[0042] Central air outlet 112
[0043] Middle connector 113
[0044] Connection unit 120
[0045] Prominent Unit 130
[0046] Fixed unit 140
[0047] Fixing slot 141
[0048] Fixing nail 142
[0049] Side opening 143
[0050] 144 away from the edge
[0051] Side pipe 200
[0052] Side air passage 210
[0053] Side air intake opening 211
[0054] Side air vent 212
[0055] Connector 220
[0056] 300 reinforcing ribs
[0057] Body Unit 310
[0058] Outer unit 320
[0059] Groove 330
[0060] Connecting part 400
[0061] Drainage plate 410 Detailed Implementation
[0062] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0063] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0064] The exhaust manifold is part of an internal combustion engine. Its main function is to collect the exhaust gases from each cylinder and guide them into the exhaust system. In a multi-cylinder engine, each cylinder produces exhaust gases, which need to be effectively guided out to make room for a fresh air-fuel mixture, thus ensuring that the engine can operate continuously and efficiently.
[0065] The exhaust manifold connects to the engine's cylinder head. Each group of cylinders corresponds to one or more exhaust ports, which converge into one or more pipes through the exhaust manifold, ultimately leading to the vehicle's exhaust system. A well-designed exhaust manifold can reduce exhaust resistance, helping to improve engine performance and fuel efficiency, while also reducing noise and harmful emissions. In some high-performance vehicles, optimized exhaust manifold design can also improve engine responsiveness and power output characteristics.
[0066] However, since it needs to connect multiple exhaust ports, its length needs to be matched, which leads to its excessive length and makes casting and transportation difficult.
[0067] This application discloses an exhaust manifold 10, with reference to... Figures 1-4 As shown, the exhaust manifold 10 includes a central pipe 100 and a side pipe 200. The central pipe 100 includes a through central air passage 110, and the side pipe 200 includes a through side air passage 210. The side air passage 210 includes a side air inlet 211 and a side air outlet 212. A connector 220 is provided along the side of the side pipe 200, and the side air outlet 212 is provided at the connector 220. The connector 220 is inserted into the central air passage 110 so that the central air passage 110 and the side air passage 210 are connected.
[0068] The gas enters the side air passage 210 through the side air inlet 211 and enters the middle air passage 110 through the side air outlet 212.
[0069] Based on the above configuration, the exhaust manifold 10 consists of two parts: a central pipe 100 and side pipes 200. The number of side pipes 200 can be increased as needed. For example, refer to... Figures 1-4 As shown, two side pipes 200 can be provided, both located on the side of the central pipe 100. Of course, only one side pipe 200 can be provided, which can be adjusted according to different engines.
[0070] The aforementioned side pipe 200 is equipped with a connector 220, which can be connected simply by inserting the connector 220 into the central air passage 110. This assembly process is simple and convenient, saving a significant amount of installation steps.
[0071] Furthermore, since a combination of central pipe 100 and side pipe 200 is used, they can be cast individually, thereby reducing casting costs. Also, the small size of a single central pipe 100 or side pipe 200 facilitates packaging and transportation.
[0072] In one embodiment, reference Figure 4 As shown, the connector 220 is fitted with the central air passage 110 with a clearance.
[0073] Because the connector 220 is fitted with the central air passage 110 with a clearance, the side pipe 200 can be easily connected to the central pipe 100. Furthermore, because the exhaust manifold 10 expands due to heat during exhaust, it cancels out the gap between the connector 220 and the central air passage 110, thus achieving excellent sealing.
[0074] In summary, the connector 220 and the central air passage 110 are designed with a clearance fit, which facilitates installation while ensuring the overall sealing of the exhaust manifold 10.
[0075] Based on the clearance fit setting, if the difference between the diameter of the central air passage 110 and the diameter of the connector 220 is too small, the connector 220 of the side pipe 200 will not easily be inserted into the central air passage 110, and the central pipe 100 and the side pipe 200 need to maintain very high precision. If the difference between the diameter of the central air passage 110 and the diameter of the connector 220 is too large, a good seal cannot be formed between the central pipe 100 and the side pipe 200.
[0076] This application sets the difference between the diameter of the central air passage 110 and the diameter of the connector 220 to be greater than or equal to 0.005 mm and less than or equal to 0.2 mm. Within this range, on the one hand, the connectors 220 of the side pipes 200 can be easily mated together without requiring ultra-high precision. On the other hand, it also allows for a relative seal between the central pipe 100 and the side pipes 200. For example, the difference between the diameter of the central air passage 110 and the diameter of the connector 220 can be 0.005 mm, 0.006 mm, 0.007 mm, 0.008 mm, 0.009 mm, 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.01 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, or 0.2 mm.
[0077] In one embodiment, reference Figures 1-4 As shown, the central pipe 100 includes a connecting unit 120 and a protruding unit 130, and the connecting unit 120 and the protruding unit 130 are arranged at an angle. The central air passage 110 is disposed within the connecting unit 120 and the protruding unit 130.
[0078] The central air passage 110 includes a central connection port 113 and a central air outlet 112. The central connection port 113 is located at the side end of the connecting unit 120, and the connector 220 is inserted into the connecting unit 120 through the central connection port 113. The central air outlet 112 is located at the side end of the protruding unit 130.
[0079] The connecting unit 120 and the protruding unit 130 are angled together, allowing the incoming gas to turn and be discharged in a coordinated manner. (Reference) Figures 1-4 As shown, the protruding unit 130 extends outward independently relative to other parts, and the protruding unit 130 here needs to be connected to other components and bear a certain weight, which makes the protruding unit 130 here prone to bending or breaking.
[0080] In this embodiment, the exhaust manifold 10 includes a reinforcing rib 300, which is disposed between the connecting unit 120 and the protruding unit 130 to reinforce the central pipe 100.
[0081] Based on the above configuration, the reinforcing rib 300 can enhance the strength of the protruding unit 130, thereby preventing the protruding unit 130 from deforming and bending, and thus improving its ability to resist bending and deformation.
[0082] In one embodiment, reference continues Figures 1-4 As shown, the reinforcing rib 300 includes a body unit 310 and an outer unit 320 that are connected to each other. The two ends of the outer unit 320 are connected to the connecting unit 120 and the protruding unit 130 respectively to form a fixed triangle.
[0083] Based on the above configuration, the main body unit 310 can share some of the pressure borne by the protruding unit 130, thereby enhancing the overall resistance of the protruding unit 130 to bending and deformation. Furthermore, the outer unit 320, the connecting unit 120, and the protruding unit 130 form a triangle, creating a stable structure that makes the connection between the connecting unit 120 and the protruding unit 130 more robust, thus providing better resistance to bending and deformation.
[0084] In one embodiment, reference Figures 1-3 As shown, the body unit 310 is recessed inward to form a groove 330, which is disposed within the fixed triangle.
[0085] The aforementioned groove 330 reduces the weight of the reinforcing rib 300, thereby reducing the overall weight of the exhaust manifold 10. Furthermore, the groove 330 can, to some extent, block heat conduction from the central pipe 100 and side pipe 200 to the outer unit 320. This ensures that the outer unit 320 can only conduct heat from both ends, resulting in more even heating and reducing the likelihood of breakage.
[0086] Furthermore, when the exhaust from the exhaust manifold 10 is heated, the entire exhaust manifold 10 will expand due to heat. The groove 330 provides an expansion space, which makes the reinforcing rib 300 in this area less likely to be damaged by thermal expansion.
[0087] In one embodiment, reference Figures 1-4 As shown, the side pipe 200 is provided with a connecting part 400 for connecting to the cylinder. A side air outlet 212 is provided in the connecting part 400, and a guide plate 410 is provided inside the connecting part 400. The guide plate 410 is arranged along the extending direction of the side air passage 210. Alternatively, the middle pipe 100 is provided with a connecting part 400 and a middle air inlet 111. The connecting part 400 is used to connect to the cylinder, and the middle air inlet 111 is used to allow external gas to flow into the middle air passage 110. The middle air inlet 111 is provided in the connecting part 400, and a guide plate 410 is provided inside the connecting part 400. The guide plate 410 is arranged along the extending direction of the middle air passage 110.
[0088] The aforementioned deflector plate 410 allows the airflow entering from the connecting portion 400 to move in a certain direction, thereby reducing the possibility of backflow to the adjacent connecting portion 400. In addition, the deflector plate 410 can pre-plan the airflow path, thereby making the airflow smoother and improving the exhaust energy of the exhaust manifold 10.
[0089] Of course, in other embodiments, the connecting part 400 in the side pipe 200 and the connecting part 400 in the middle pipe 100 can coexist, and the effects of this application will not be elaborated here.
[0090] If the length of the guide plate 410 is too large along the extension direction of the side air passage 210, it will occupy too much space, resulting in too little airflow through the side air passage 210 and the central air passage 110. If the length of the guide plate 410 is too small along the extension direction of the side air passage 210, it will not play a guiding role.
[0091] In this embodiment, the length of the guide plate 410 is set to be greater than or equal to 10 mm and less than or equal to 60 mm along the extending direction of the side air passage 210. Within this range, it does not occupy too much space and can also play a guiding role. For example, the length of the guide plate 410 can be set to 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, or 60 mm.
[0092] Similarly, along the extending direction of the central air passage 110, the length of the diversion plate 410 can be set to be greater than or equal to 10 mm and less than or equal to 60 mm. The effect within this range is similar to the above embodiment, and will not be elaborated further here. For example, the length of the diversion plate 410 can also be set to 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, or 60 mm.
[0093] The length and extension direction of the diverter plate 410 located in the side air passage 210 and the diverter plate 410 located in the middle air passage 110 may be the same or different, and both are within the protection scope of this application.
[0094] In one embodiment, reference Figures 1-3 As shown, the central pipe 100 includes a fixing unit 140, which includes a fixing groove 141 and a fixing pin 142. Furthermore, the fixing unit 140 is very close to the protruding unit 130, making installation difficult, especially inserting the fixing pin 142 from the top of the fixing groove 141.
[0095] In this embodiment, a side opening 143 is provided on the fixing groove 141, and the diameter of the side opening 143 is larger than the diameter of the fixing nail 142.
[0096] Based on the above configuration, the fixing nail 142 can be directly inserted into the fixing groove 141 from the side opening 143 and then fixed, without having to insert the fixing nail 142 from the top opening of the fixing groove 141 and then fix it, thus effectively solving the problem of inserting the fixing nail 142.
[0097] In one embodiment, reference Figure 3 As shown, the side opening 143 that is away from the protruding unit 130 is designated as the away side 144, and the central pipe 100 includes the protruding unit 130. Along the length direction, the length A1 from the away side 144 to the protruding unit 130 is greater than the length of the fixing pin 142.
[0098] Based on the above configuration, the fixing pin 142 can be pushed completely horizontally into the fixing groove 141 without being inserted at an angle, thus facilitating the installation process. Furthermore, since the fixing pin 142 automatically falls a certain distance downwards after fully entering the fixing groove 141 to engage with the cylinder, a certain amount of space is left at the top of the fixing pin 142, which also facilitates the operator in fixing the fixing pin 142.
[0099] This application also proposes an engine including an exhaust manifold 10 as described in any of the above embodiments.
[0100] This application also proposes a vehicle that includes the exhaust manifold 10 described in any of the preceding claims.
[0101] The vehicle can be a passenger car, truck, van, SUV, or any other type of vehicle with an internal combustion engine. In one embodiment, the vehicle is an autonomous vehicle, wherein the vehicle's maneuverability is controlled without direct input from a human driver.
[0102] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An exhaust manifold, characterized in that, The exhaust manifold includes: A central duct, wherein the central duct includes a through-type central air passage; A side pipe, the side pipe including a through side air passage, the side air passage including a side air inlet and a side air outlet, the side pipe having a connector along its side, the side air outlet being located at the connector, the connector being inserted into the central air passage so that the central air passage and the side air passage are connected; The gas enters the side air passage through the side air inlet and then enters the middle air passage through the side air outlet.
2. The exhaust manifold as described in claim 1, characterized in that, The central pipe includes a connecting unit and a protruding unit, and the connecting unit and the protruding unit are arranged at an angle. The central air passage is disposed within the connecting unit and the protruding unit. The central air passage includes a central connection port and a central air outlet. The central connection port is located at the side end of the connecting unit, and the connector is inserted into the connecting unit through the central connection port. The central air outlet is located at the side end of the protruding unit. The exhaust manifold includes a reinforcing rib, which is disposed between the connecting unit and the protruding unit to reinforce the central pipe.
3. The exhaust manifold as described in claim 2, characterized in that, The reinforcing rib includes an interconnected body unit and an outer unit, with both ends of the outer unit connected to the connecting unit and the protruding unit respectively to form a fixed triangle.
4. The exhaust manifold as described in claim 3, characterized in that, The body unit is recessed inward to form a groove, which is located within the fixed triangle.
5. The exhaust manifold as described in claim 1, characterized in that, The side pipe is provided with a connecting part for connecting to the cylinder. The side air outlet is provided in the connecting part, and a guide plate is provided inside the connecting part. The guide plate is provided along the extension direction of the side air passage. And / or, The central pipe is provided with a connecting part and a central air inlet. The connecting part is used to connect with the cylinder, and the central air inlet is used to allow external gas to flow into the central air passage. The central air inlet is located in the connecting part, and a guide plate is provided inside the connecting part. The guide plate is arranged along the extension direction of the central air passage.
6. The exhaust manifold as described in claim 5, characterized in that, Along the extending direction of the side air passage, the length of the guide plate is greater than or equal to 10 mm and less than or equal to 60 mm; And / or, Along the extension direction of the central air passage, the length of the diversion plate is greater than or equal to 10 mm and less than or equal to 60 mm.
7. The exhaust manifold as described in claim 1, characterized in that, The central pipe includes a fixing unit, which includes a fixing groove and a fixing nail. The fixing groove has a side opening, and the diameter of the side opening is larger than the diameter of the fixing nail.
8. The exhaust manifold as described in claim 7, characterized in that, Let the side opening that is away from the protruding unit be the "away side", and the central pipe include the protruding unit; Along the length direction, the length from the opposite edge to the protruding unit is greater than the length of the fixing pin.
9. The exhaust manifold as described in claim 1, characterized in that, The connector is fitted with the central air passage with a clearance. And / or, The difference between the diameter of the central air passage and the diameter of the connector is greater than or equal to 0.005 mm and less than or equal to 0.2 mm.
10. An engine, characterized in that, Includes the exhaust manifold as described in any one of claims 1-9.
11. A vehicle, characterized in that, Including the engine as described in claim 10.