All-terrain vehicle
By tilting the flange end face and exhaust manifold connection hole in the all-terrain vehicle, the problem of difficult exhaust manifold assembly is solved, assembly efficiency is improved and maintenance costs are reduced, while exhaust efficiency and system life are also improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG CFMOTO POWER CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
The exhaust manifold of an all-terrain vehicle is difficult to assemble into the engine due to insufficient space, which reduces assembly efficiency and increases later maintenance costs.
By tilting the engine flange end face to the horizontal reference plane, and designing the connection hole of the exhaust manifold and the exhaust port to intersect at an angle, installation space is freed up, exhaust manifold assembly is facilitated, and later maintenance costs are reduced.
It improves engine assembly efficiency, reduces later maintenance costs, and increases exhaust efficiency and system lifespan without increasing space occupation.
Smart Images
Figure CN224413746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle technology, specifically to an all-terrain vehicle. Background Technology
[0002] All-terrain vehicles (ATVs) are used for safe driving on various terrains. Due to differences in terrain and user driving habits, ATVs require strong power output. However, due to size limitations, the power unit is generally located at the rear of the ATV. Furthermore, because ATVs are relatively compact, space must be considered in their development, assembly, and transportation. Generally, mounting the engine vertically on the chassis allows full utilization of the vertical space, enabling the installation of a larger engine within a fixed length. However, under this arrangement, for ATVs with superchargers or other components, insufficient space may make assembly of the exhaust manifold to the engine difficult or impossible, significantly reducing assembly efficiency and increasing subsequent maintenance costs. Utility Model Content
[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an all-terrain vehicle with a high-power engine and an easy-to-assemble exhaust manifold.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] An all-terrain vehicle includes: a frame; a body panel at least partially mounted on the frame; a running gear disposed below the frame; and a power system including an engine, an exhaust manifold, and a supercharger. The engine has at least two cylinder heads arranged in parallel on the frame, and also has an intake port and an exhaust port. Along the longitudinal direction of the frame, the intake port is located at the front of the engine, and the exhaust port has an exhaust port flange located at the rear of the engine. The exhaust manifold is connected to the exhaust port flange via the exhaust manifold flange. Along the mounting direction of the exhaust manifold and the exhaust port, the supercharger assembly at least partially overlaps with the flange. The exhaust port flange has a flange end face that extends substantially within a predetermined plane and forms a first connection hole. The exhaust manifold flange forms a second connection hole. When the second connection hole aligns with the first connection hole, the exhaust manifold flange is connected to the exhaust port flange by fasteners. A predetermined straight line perpendicular to the flange end face is defined, and the predetermined straight line intersects a horizontal reference plane at an angle, the predetermined angle ranging from 50° to 70°.
[0006] Furthermore, the preset included angle ranges from 55° to 65°.
[0007] Furthermore, the extension direction of the first connecting hole is substantially perpendicular to the flange end face.
[0008] Furthermore, the extension direction of the second connecting hole is the same as the extension direction of the first connecting hole.
[0009] Furthermore, along the installation direction of the exhaust manifold and exhaust port, the booster assembly and the flange at least partially overlap.
[0010] Furthermore, multiple first connection holes are provided, and the multiple first connection holes are distributed around the exhaust port.
[0011] Furthermore, along the installation direction of the exhaust manifold and the exhaust port, the power system also includes an obstruction, at least partially obstructing the installation of the exhaust manifold to the exhaust port.
[0012] Furthermore, the powertrain also includes an intercooler, which is at least partially located on the upper part of the engine.
[0013] An all-terrain vehicle includes: a frame; a body panel at least partially disposed on the frame; a running gear disposed below the frame; a power system including an engine having at least two cylinder heads arranged in parallel on the frame, the engine also having an intake port and an exhaust port, the intake port being located at the front of the engine along the longitudinal direction of the frame, and the exhaust port having an exhaust port flange located at the rear of the engine; an exhaust manifold being connected to the exhaust port flange via an exhaust manifold flange; a supercharger being disposed in the mounting direction from the exhaust manifold to the exhaust port; the exhaust port flange having a flange end face extending substantially within a predetermined plane and forming a first connecting hole, the exhaust manifold flange forming a second connecting hole, the exhaust manifold flange being connected to the exhaust port flange by fasteners when the second connecting hole is aligned with the first connecting hole; the flange end face intersecting the water reference plane at an angle forming a second included angle, the predetermined included angle ranging from 20° to 40°.
[0014] Furthermore, the preset included angle ranges from 25° to 35°.
[0015] Furthermore, the flange end face is flat, and the extension direction of the first connecting hole is basically perpendicular to the flange end face.
[0016] Furthermore, multiple first connection holes are provided, and the multiple first connection holes are distributed around the exhaust port.
[0017] Furthermore, along the installation direction of the exhaust manifold and exhaust port, the booster assembly and the flange at least partially overlap.
[0018] Furthermore, the booster assembly is at least partially positioned in the exhaust direction after the exhaust manifold is installed to the exhaust port.
[0019] An all-terrain vehicle includes: a frame; a body panel, at least partially disposed on the frame; a running gear disposed below the frame; and a power system including an engine, an exhaust manifold, and a supercharger. The engine has at least two cylinder heads arranged in parallel on the frame, and also has an intake port and an exhaust port. Along the longitudinal direction of the frame, the intake port is located at the front of the engine, and the exhaust port has an exhaust port flange located at the rear of the engine. The exhaust manifold is connected to the exhaust port flange via the exhaust manifold flange. The supercharger is disposed in the mounting direction from the exhaust manifold to the exhaust port. The exhaust port flange has a flange end face, and the exhaust port flange forms a first connecting hole penetrating the flange end face. The exhaust manifold flange is connected to the exhaust port via the first connecting hole. The extension direction of the first connecting hole intersects the water reference plane at an angle of inclination, forming a predetermined angle ranging from 50° to 70°.
[0020] Furthermore, the preset included angle ranges from 55° to 65°.
[0021] Furthermore, multiple first connection holes are provided, and the multiple first connection holes are distributed around the exhaust port.
[0022] Furthermore, when viewed from the exhaust direction of the exhaust port, the booster assembly and the flange at least partially overlap.
[0023] Furthermore, the extension direction of the first connecting hole intersects with the flange end face at an inclination.
[0024] Furthermore, the flange end face intersects the water reference plane at an angle.
[0025] The advantages of this invention are that by setting the flange end face inclined to the horizontal reference plane, the assembly efficiency of the engine is improved and the maintenance cost is reduced. Attached Figure Description
[0026] Figure 1 This is a three-dimensional schematic diagram of the all-terrain vehicle provided in the embodiments of this application;
[0027] Figure 2 This is a three-dimensional schematic diagram of the power system of the all-terrain vehicle provided in this application being mounted on the vehicle frame;
[0028] Figure 3 This is a side view of the power system of the all-terrain vehicle provided in this application embodiment mounted on the vehicle frame;
[0029] Figure 4 This is a three-dimensional schematic diagram of the power system of the all-terrain vehicle provided in the embodiments of this application;
[0030] Figure 5 This is a three-dimensional schematic diagram of the supercharger assembly and exhaust manifold connected to the cylinder head of the all-terrain vehicle provided in the embodiments of this application;
[0031] Figure 6 This is an exploded view of the supercharger assembly and exhaust manifold connected to the cylinder head of the all-terrain vehicle provided in this application embodiment;
[0032] Figure 7 This is a cross-sectional view of the air passage portion of the power system of the all-terrain vehicle provided in the embodiments of this application;
[0033] Figure 8 This is provided by the embodiments of this application. Figure 7 A magnified view of a section at point A in the middle;
[0034] Figure 9 This is a cross-sectional view of the flange connection surface in the power system of the all-terrain vehicle provided in the embodiments of this application. Detailed Implementation
[0035] refer to Figure 1 and Figure 2 As shown, this application provides an all-terrain vehicle 100, which includes a frame 11, a body panel 12, a running gear 13, and a power system 14. The frame 11 forms the basic skeleton of the all-terrain vehicle 100, the body panel 12 is at least partially mounted on the frame 11, and the running gear 13 is located under the frame 11 and can be driven by the power system 14. In some embodiments, the all-terrain vehicle 100 also includes a transmission system (not shown) for transmitting power from the power system 14 to the running gear 13.
[0036] like Figures 2 to 4 As shown, the power system 14 is mounted on the frame 11 and is suspended or fixed to the frame 11 by fasteners 1421a. To clearly illustrate the technical solution of this application, the following are also defined: Figure 2The diagram shows the upper, lower, left, right, front, and rear sides. The vertical direction represents the height of the all-terrain vehicle 100, the horizontal direction represents its width, and the longitudinal direction represents its length. In one implementation, the power system 14 includes a gearbox 141 and an engine 142, which share a housing and form an assembly. The engine 142 has at least two cylinder heads 1421 arranged in a straight line on the frame 11. When the all-terrain vehicle 100 is on the water reference plane 102, the extension directions of these at least two cylinder heads 1421 are perpendicular to the water reference plane 102. It needs further explanation here that, due to assembly or manufacturing errors, when the extension direction of the cylinder head 1421 is tilted within a preset range relative to the water reference plane 102, such as within ±5°, it is also considered that the extension direction of the cylinder head 1421 is perpendicular to the water reference plane 102. That is, the angle between the extension direction of the cylinder head 1421 and the water reference plane 102 is between -85° and 85°. Furthermore, the engine 142 also includes an intake port (not shown) and an exhaust port 1421b. As one implementation, both the intake port and the exhaust port 1421b are located on the cylinder head 1421. Along the longitudinal direction of the frame 11, the intake port is located on the front side of the engine 142, and the exhaust port 1421b is located on the rear side of the engine 142. The intake port is connected to the intake assembly (not shown), and the exhaust port 1421b is connected to the exhaust assembly 143. In one illustrative configuration, the exhaust assembly 143 includes an exhaust manifold 1431, an exhaust pipe 1432, and a muffler 1433. The exhaust manifold 1431, the exhaust pipe 1432, and the muffler 1433 are sequentially connected and disposed behind the exhaust port 1421b. One end of the exhaust manifold 1431 is connected to the exhaust pipe 1432, and the other end of the exhaust manifold 1431 is connected to the exhaust port 1421b.
[0037] like Figures 5 to 6As shown, in one implementation, an exhaust port flange 1421c is provided on the exhaust port 1421b of the engine 142, and an exhaust manifold flange 1431a is provided on the exhaust manifold 1431. The exhaust manifold flange 1431a can cooperate with the exhaust port flange 1421c to connect the exhaust manifold 1431 to the exhaust port 1421b of the engine 142. Specifically, the exhaust port flange 1421c has a flange end face 1421d, which extends in a predetermined plane, and a first connecting hole 1421e is provided on the exhaust port flange 1421c that penetrates the end face of the flange end face 1421d. The exhaust manifold flange 1431a has a flange connection surface 1431b, on which a second connection hole 1431c is provided. When the flange connection surface 1431b mates with the flange end face 1421d and the second connection hole 1431c aligns with the first connection hole 1421e, the exhaust manifold flange 1431a is connected to the exhaust port flange 1421c via fasteners 1421a. Understandably, due to the special structure of the exhaust manifold 1431, it is required to have a significant degree of bending in its transverse plane. Furthermore, because the all-terrain vehicle 100 itself has a relatively compact structure, the exhaust manifold 1431 cannot produce much bending in its longitudinal direction. Therefore, when the exhaust manifold 1431 is installed to the exhaust port 1421b, a certain amount of space needs to be reserved on the outside of the exhaust port 1421b for assembly. In one illustrative configuration, the powertrain 14 further includes a turbocharger 144 and an intercooler 145. The turbocharger 144 is used to improve the intake performance and combustion efficiency of the engine 142. Along the height of the engine 142, the intercooler 145 is located at the upper end of the engine 142 and is used to dissipate heat from the engine 142. Specifically, the turbocharger 1444 includes a compressor 1441, a turbine 1442, and an intermediate body 1443. The turbine 1442 is located at the rear end of the exhaust manifold 1431, and both the compressor 1441 and the turbine 1442 are located on the intermediate body 1443. All of these structures are at least partially located in the mounting direction from the exhaust manifold 1431 to the exhaust port 1421b. That is, along the exhaust direction of the exhaust port 1421b, the flange at the interface between the turbocharger 1444 or other components and the exhaust manifold 1431 at least partially overlaps. In other words, when the exhaust manifold 1431 is installed onto the exhaust port 1421b, at least part of the supercharger assembly 144 or other components obstruct the installation of the exhaust manifold 1431 onto the exhaust port 1421b. This greatly reduces the installation space for the exhaust manifold 1431 to be installed onto the exhaust port 1421b, thereby reducing the assembly efficiency of the engine 142 and the convenience of subsequent maintenance.
[0038] To meet assembly requirements, the connection between the exhaust port 1421b and the exhaust manifold 1431 needs to have a necessary length to allow sufficient space between the exhaust port 1421b, the flange, and the exhaust manifold 1431 for fastener 1421a to be driven in. Fastener 1421a can be at least one of screws, rivets, or other connecting elements. Figure 5 As shown, due to the presence of the supercharger assembly 144 or other obstructions, the installation space for the exhaust manifold 1431 to be installed at the exhaust port 1421b is severely compressed, making assembly very difficult or requiring additional tools, causing significant inconvenience to the operator. In fact, in non-professional scenarios, there are even cases where the exhaust manifold 1431 cannot be installed at the exhaust port 1421b, thus posing a greater challenge to the later maintenance of the engine 142. Figure 7 and Figure 8As shown, to solve the above-mentioned technical problems, this application sets the flange end face 1421d inclined upwards, thereby making the first mounting hole deviate from the direction of the booster assembly 144 or other components, thus facilitating the installation of the exhaust manifold 1431. Specifically, a preset straight line 101 perpendicular to the flange end face 1421d is defined. This preset straight line 101 intersects the water reference plane 102 at an angle to form a first included angle α, which ranges from 50° to 70°. With this setting, the extension directions of the first connecting hole 1421e and the second connecting hole 1431c between the exhaust port flange 1421c and the exhaust manifold flange 1431a are inclined to intersect the installation direction. This allows the exhaust manifold 1431 to be assembled onto the exhaust port 1421b from above the flange end face 1421d, thereby freeing up installation space and making the assembly of the exhaust port 1421b and the exhaust manifold 1431 more convenient. It needs to be explained here that the extension direction of the first connecting hole 1421e is basically perpendicular to the flange end face 1421d. That is, after the first connecting hole 1421e and the second connecting hole 1431c are aligned, the angled intersection of their extension directions with the exhaust direction is due to the inclination of the flange end face 1421d itself, not due to the inclination of the first connecting hole 1421e and the second connecting hole 1431c themselves. Therefore, the installation direction here is also the extension direction of the first connecting hole 1421e. In addition, since the original arrangement between the exhaust manifold 1431 and the exhaust port 1421b is retained, the above arrangement does not increase the actual distance between the exhaust port 1421b and the exhaust manifold 1431, which is conducive to the rapid discharge of high-temperature gas. It needs to be explained here that when the engine 142 is working, the heat it generates is continuous, and the high-temperature and high-pressure exhaust gas needs to be discharged into the atmosphere through the entire exhaust assembly 143. Because the cylinder head 1421 and exhaust manifold 1431, where the exhaust port 1421b is located, need to possess special material properties capable of absorbing and containing high temperatures of approximately 800°C to 1000°C, it is crucial to minimize the heat stored at the interface between the exhaust port 1421b and exhaust manifold 1431 to prevent significant impact on surrounding components. The aforementioned design reduces unnecessary extension at the connection between the exhaust manifold 1431 and the exhaust port 1421b, facilitating installation, improving exhaust flow, and reducing heat storage at the interface, thereby extending the overall system lifespan.
[0039] Furthermore, the first included angle α ranges from 55° to 65°. By further optimizing the setting range of the first angle, the installation between the exhaust port 1421b and the exhaust manifold 1431 can be made more convenient, and no significant changes to the original mold are required, thereby reducing mold costs. In addition, the appropriate included angle setting allows the operator to more easily disassemble and assemble the exhaust manifold 1431 for maintenance or assembly.
[0040] As one implementation, the flange end face 1421d is defined to extend within a preset plane 103, which intersects the water reference plane 102 at an angle to form a second included angle β, the range of which is 20° to 40°. This arrangement allows the extension directions of the first connecting hole 1421e and the second connecting hole 1431c between the exhaust port flange 1421c and the exhaust manifold flange 1431a to intersect the installation direction at a large angle. This allows the exhaust manifold 1431 to be assembled onto the exhaust port 1421b from above the flange end face 1421d, freeing up installation space and making the assembly of the exhaust port 1421b and the exhaust manifold 1431 more convenient. Furthermore, the second included angle β ranges from 25° to 35°, allowing the assembly of the exhaust port 1421b and the exhaust manifold 1431 to be performed within a more convenient range.
[0041] like Figure 9As shown, in one illustrative configuration, the extending straight line 104 of the first connecting hole 1421e intersects the water reference plane 102 at an angle, forming a third included angle γ, which ranges from 50° to 70°. This arrangement allows the extending directions of the first connecting hole 1421e and the second connecting hole 1431c between the exhaust port flange 1421c and the exhaust manifold flange 1431a to intersect the installation direction at a large angle. This allows the exhaust manifold 1431 to be assembled onto the exhaust port 1421b from above the flange end face 1421d, freeing up installation space and making the assembly of the exhaust port 1421b and the exhaust manifold 1431 more convenient. Furthermore, the third included angle γ ranges from 55° to 65°; within this angle range, the installation of the exhaust manifold 1431 onto the exhaust port 1421b is even more convenient. It should be explained here that the formation of the third included angle can be due to the inclination of the first connecting hole 1421e itself, or it can be due to the joint inclination of the flange end face 1421d and the first connecting hole 1421e. Specifically, when the third included angle γ is caused by the joint beveling of the flange end face 1421d and the first connecting hole 1421e, only a small degree of inclination is needed between the flange end face 1421d and the first connecting hole 1421e compared to the original design, thus further reducing the amount of mold modification. Furthermore, this arrangement allows for leeway in the inclination settings of both the flange end face 1421d and the first connecting hole 1421e, allowing them to complement each other within a suitable range. This ensures ease of assembly and improves the overall design adaptability of the engine 142.
[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.
Claims
1. An all-terrain vehicle, comprising: Frame; A body panel, at least partially disposed on the vehicle frame; A running gear is located below the vehicle frame; A powertrain system includes an engine, an exhaust manifold, and a turbocharger. The engine has at least two cylinder heads mounted in series on the chassis. The engine also has an intake port and an exhaust port. Along the longitudinal direction of the chassis, the intake port is located at the front of the engine, and the exhaust port has an exhaust port flange located at the rear of the engine. The exhaust manifold is connected to the exhaust port flange via an exhaust manifold flange. Along the mounting direction of the exhaust manifold and the exhaust port, the turbocharger at least partially overlaps with the exhaust port flange. Its features are, The exhaust port flange has a flange end face, the exhaust port flange forms a first connecting hole through the flange end face, the exhaust manifold flange forms a second connecting hole, and when a fastener passes through the first connecting hole and the second connecting hole at the same time, the exhaust manifold flange is connected to the exhaust port flange. A preset straight line perpendicular to the flange end face intersects with the horizontal reference plane and forms a preset angle, the preset angle being in the range of 50° to 70°.
2. The all-terrain vehicle according to claim 1, characterized in that, The preset included angle ranges from 55° to 65°.
3. The all-terrain vehicle according to claim 1, characterized in that, The flange end face is a plane, and the extension direction of the first connecting hole is substantially perpendicular to the flange end face.
4. The all-terrain vehicle according to claim 1, characterized in that, The extension direction of the second connecting hole is basically the same as that of the first connecting hole.
5. The all-terrain vehicle according to claim 1, characterized in that, The turbocharger is at least partially positioned in the exhaust direction after the exhaust manifold is installed to the exhaust port.
6. The all-terrain vehicle according to claim 1, characterized in that, The first connection hole is provided in multiple ways, and the multiple first connection holes are distributed around the exhaust port.
7. The all-terrain vehicle according to claim 1, characterized in that, Along the installation direction of the exhaust manifold and the exhaust port, the power system further includes a component, at least a portion of which obstructs the installation of the exhaust manifold to the exhaust port.
8. The all-terrain vehicle according to claim 1, characterized in that, The power system also includes an intercooler, which is at least partially disposed at the upper part of the engine along the height direction of the engine.
9. An all-terrain vehicle, comprising: Frame; A body panel, at least partially disposed on the vehicle frame; A running system is located below the vehicle frame; A powertrain includes an engine, an exhaust manifold, and a turbocharger. The engine has at least two cylinder heads mounted in series on the frame. The engine also has an intake port and an exhaust port. Along the longitudinal direction of the frame, the intake port is located at the front of the engine, and the exhaust port has an exhaust port flange located at the rear of the engine. The exhaust manifold is connected to the exhaust port flange via an exhaust manifold flange. The turbocharger is positioned in the mounting direction from the exhaust manifold to the exhaust port. Its features are, The exhaust port flange has a flange end face, and the exhaust port flange forms a first connecting hole that penetrates the flange end face. The exhaust manifold flange forms a second connecting hole. When a fastener passes through both the first connecting hole and the second connecting hole simultaneously, the exhaust manifold flange is connected to the exhaust port flange. The flange end face intersects the horizontal reference plane at an angle and forms a preset angle, the preset angle being in the range of 20° to 40°.
10. The all-terrain vehicle according to claim 9, characterized in that, The preset included angle ranges from 25° to 35°.
11. The all-terrain vehicle according to claim 9, characterized in that, The extension direction of the first connecting hole is substantially perpendicular to the flange end face.
12. The all-terrain vehicle according to claim 9, characterized in that, The first connection hole is provided in multiple ways, and the multiple first connection holes are distributed around the exhaust port.
13. The all-terrain vehicle according to claim 9, characterized in that, Along the installation direction of the exhaust manifold and the exhaust port, the turbocharger and the exhaust port flange at least partially overlap.
14. The all-terrain vehicle according to claim 9, characterized in that, The turbocharger is at least partially positioned in the exhaust direction after the exhaust manifold is installed to the exhaust port.
15. An all-terrain vehicle, comprising: Frame; A running system is located below the vehicle frame; A powertrain includes an engine, an exhaust manifold, and a turbocharger. The engine has at least two cylinder heads mounted in series on the frame. The engine also has an intake port and an exhaust port. Along the longitudinal direction of the frame, the intake port is located at the front of the engine, and the exhaust port has an exhaust port flange located at the rear of the engine. The exhaust manifold is connected to the exhaust port flange via an exhaust manifold flange. The turbocharger is positioned in the mounting direction from the exhaust manifold to the exhaust port. Its features are, The exhaust port flange has a flange end face, and the exhaust port flange forms a first connection hole that penetrates the flange end face. The exhaust manifold flange is connected to the exhaust port through the first connection hole. The extension direction of the first connection hole intersects the horizontal reference plane at an angle and forms a preset angle, the preset angle being in the range of 50° to 70°.
16. The all-terrain vehicle according to claim 15, characterized in that, The preset included angle ranges from 55° to 65°.
17. The all-terrain vehicle according to claim 15, characterized in that, The exhaust manifold flange has a second connection hole. When a fastener passes through both the first connection hole and the second connection hole, the exhaust manifold flange is connected to the exhaust port flange. The first connection hole is provided in multiple ways, and the multiple first connection holes are distributed around the exhaust port.
18. The all-terrain vehicle according to claim 15, characterized in that, Viewed from the exhaust direction of the exhaust port, the turbocharger and the exhaust port flange at least partially overlap.
19. The all-terrain vehicle according to claim 15, characterized in that, The extension direction of the first connecting hole intersects the flange end face at an inclination.
20. The all-terrain vehicle according to claim 15, characterized in that, The flange end face is a plane, and the flange end face intersects the horizontal reference plane at an angle.