Engine intake system and vehicle

Abstract

The application relates to an engine air intake system and a vehicle, the engine air intake system comprising a vehicle lower grille, an air intake pipe and an engine manifold, the vehicle lower grille comprising a frame body, the frame body being provided with an air inlet on one side wall in the vehicle width direction; the air intake pipe is arranged outside and relative to the front end module frame, the air intake pipe having an air inlet end and an air outlet end, the air inlet end being communicated with the air inlet; the engine manifold is used for being connected with and communicated with an engine, the engine manifold is communicated with the air outlet end, and the engine manifold can intake air through the air inlet. In this way, on the one hand, the height of the air inlet is reduced, so that the layout requirement of a low vehicle body model is adapted; on the other hand, the space interference between the front end module frame and the air intake pipe is avoided, the running design of the air intake pipe is simplified, the system adaptability is improved, and the engineering arrangement difficulty is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of engine intake, and in particular relates to an engine intake system and a vehicle. Background Technology

[0002] Currently, some vehicles' engine intake systems typically have a dedicated air duct behind the upper grille to directly introduce cool outside air into the engine, reducing the heat radiation from the front module frame and thus lowering the engine intake temperature. However, due to the high position of the upper grille, this engine intake system design is difficult to adapt to low-profile vehicles. Furthermore, the front module frame's location behind the upper grille necessitates that the intake pipes in this engine intake system must detour around the vehicle's thermal management module. This not only increases the complexity of the piping layout but also limits the optimization space for the piping, thereby increasing the overall design difficulty of the engine intake system's piping. Utility Model Content

[0003] In view of this, it is necessary to provide an engine intake system and vehicle for solving the above-mentioned technical problems.

[0004] An engine intake system, the engine intake system comprising: The vehicle lower grille includes a frame, wherein an air inlet is provided on one of the side walls in the vehicle width direction; An air intake pipe is provided on the outside of the front module frame and is independently provided relative to the front module frame. The air intake pipe has an air inlet end and an air outlet end, and the air inlet end is connected to the air inlet. An engine manifold is used to connect to the engine. The engine manifold is connected to the exhaust port and can intake air into the engine through the intake port.

[0005] Understandably, placing the air intake on the side wall of the lower grille of the vehicle and guiding the airflow along the outside of the front module frame via the air intake pipe reduces the height of the air intake, making it suitable for the layout requirements of low-profile vehicles. On the other hand, it avoids spatial interference between the front module frame and the air intake pipe, simplifies the design of the air intake pipe's routing, and reduces the difficulty of engineering layout while improving system adaptability.

[0006] In one embodiment, the frame further includes a top wall and a bottom wall, the top wall and the bottom wall being disposed on the upper and lower sides of the side wall in the vehicle height direction; In the vehicle height direction, the distance between the air intake and the top wall is less than the distance between the air intake and the bottom wall.

[0007] It is understandable that placing the air intake near the top wall of the frame would improve the vehicle's wading ability and prevent water from entering the air intake.

[0008] In one embodiment, in the passage connecting the intake pipe and the engine manifold, the air introduced into the intake pipe through the intake port can flow to the engine manifold via the intake baffle, and the intake baffle can block water in the intake pipe from flowing to the engine manifold.

[0009] It is understandable that an intake baffle is used to prevent water from entering the engine manifold, thus avoiding water ingress into the engine and preventing a decrease in engine combustion efficiency due to water intrusion.

[0010] In one embodiment, the air intake pipe is provided with a drain hole, and the air intake pipe can discharge water blocked by the air intake baffle through the drain hole.

[0011] Understandably, the intake manifold uses a drain hole to drain water blocked by the intake baffle, thus preventing water from accumulating in the intake manifold and ensuring that water does not enter the engine.

[0012] In one embodiment, the drain hole is located in front of the intake baffle along the air flow direction inside the intake pipe; Furthermore, in the vehicle height direction, the drain hole is located below the air intake baffle.

[0013] It is understandable that the above structural design allows water blocked by the air intake baffle to be automatically discharged under gravity, thus facilitating drainage of the air intake pipe.

[0014] In one embodiment, the engine intake system further includes an air filter, and the engine manifold is connected to the exhaust end through the air filter; Furthermore, the air filter is provided with a compensation air passage, which is connected in parallel with the intake pipe, and the engine manifold can intake air through the compensation air passage.

[0015] It is understandable that a compensating air passage is used to compensate for the intake pressure, thus ensuring that the air pressure introduced into the engine's intake system meets the engine's operating requirements.

[0016] In one embodiment, the engine intake system has a first intake state, a second intake state, and a third intake state; When the engine intake system is in the first intake state, the engine manifold can take in air through the intake port; When the engine intake system is in the second intake state, the engine manifold can simultaneously intake air through the intake port and the compensation air passage. When the engine intake system is in the third intake state, the engine manifold can take in air through the compensation air passage.

[0017] In one embodiment, a pressure check valve is installed in the compensating airway.

[0018] It is understandable that a pressure check valve is used to control the intake of the compensating air passage, so that the compensating air passage can appropriately increase the intake pressure and prevent unstable combustion in the engine.

[0019] In one embodiment, the pressure check valve is detachably connected to the air filter.

[0020] It is understandable that by removing the pressure check valve, the engine can still receive air through the compensating air passage when the air intake is blocked, in order to meet the normal operating requirements of the vehicle under special working conditions.

[0021] In addition, this application also provides a vehicle, including a front-end module frame and the engine intake system described above; Along the length of the vehicle, the front-end module frame is positioned relative to the rear of the frame, and the air intake pipe is positioned above the front-end module frame in the height direction of the vehicle and abuts against and limits the front-end module frame.

[0022] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The engine intake system and vehicle claimed in this application have the air intake located on the side wall of the lower grille of the vehicle and the air is guided along the outside of the front module frame through the air intake pipe. This reduces the height of the air intake to make it suitable for the layout requirements of low-body vehicles. On the other hand, it avoids spatial interference between the front module frame and the air intake pipe, simplifies the design of the air intake pipe, and reduces the difficulty of engineering layout while improving system adaptability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the engine intake system provided in this application.

[0025] Figure 2 This is a partial structural diagram of the assembly of the intake pipe and the upper pipe joint of the air filter in this application.

[0026] Reference numerals: 100, Engine intake system; 10, Lower grille of vehicle; 11, Frame; 111, Side wall; 112, Top wall; 113, Bottom wall; 101, Air inlet; 20, Intake pipe; 210, Intake baffle; 21, Intake end; 22, Exit end; 23, Drain hole; 30, Engine manifold; 40, Air filter; 41, Pipe connector; 50, Panel; 200, Front module frame. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] The engine intake system 100 claimed in this application is used to supply air to an engine to meet the combustion requirements during engine operation. Specifically, this engine intake system 100 is used to supply air to a fuel-powered engine. However, it can also be used to supply air to other combustion engines such as hydrogen engines, which will not be elaborated upon here.

[0031] like Figure 1 , Figure 2As shown, the engine intake system 100 provided in this application includes a lower grille 10, an intake pipe 20, and an engine manifold 30. The lower grille 10 includes a frame 11, on which an air inlet 101 is provided on one of its side walls 111 in the vehicle width direction Y. The intake pipe 20 is disposed on the outside of the front module frame 200 and relative to the front module frame 200. The intake pipe 20 has an intake end 21 and an outlet end 22, with the intake end 21 communicating with the intake port 101. The engine manifold 30 is connected to an engine (not shown), communicating with the outlet end 22, and the engine manifold 30 can intake air into the engine through the intake port 101. In other words, the engine intake system 100 of this application achieves engine intake by additionally providing an air inlet 101 on the side wall 111 of the lower grille 10. Here, the side wall 111 of the frame 11 extends along the vehicle height direction.

[0032] As can be seen from the above, the engine intake system 100 of this application arranges the air intake 101 on the side wall 111 of the lower grille 10 of the vehicle, and guides the airflow along the outside of the front module frame through the air intake pipe 20. This reduces the height of the air intake 101 to adapt to the layout requirements of low-body vehicles. On the other hand, it avoids spatial interference between the front module frame and the air intake pipe 20, simplifies the design of the air intake pipe 20, and reduces the difficulty of engineering layout while improving the system adaptability.

[0033] It should be noted that when the engine intake system 100 of this application is working, the amount of air intake through the intake port 101 can meet the working requirements of the engine. Specifically, this can be achieved by controlling the size and orientation of the intake port 101 on the side wall 111 of the frame 11 of the lower grille 10 of the vehicle. This will not be elaborated here.

[0034] As shown in the figure, in one embodiment, the frame 11 further includes a top wall 112 and a bottom wall 113, which are disposed on the upper and lower sides of the side wall 111 in the vehicle height direction Z. In the vehicle height direction Z, the distance between the air intake 101 and the top wall 112 is smaller than the distance between the air intake 101 and the bottom wall 113. That is, in this embodiment, the air intake 101 is disposed adjacent to the top wall 112, so that the air intake 101 is positioned as high as possible on the lower grille 10 of the vehicle to improve the vehicle's wading ability and prevent the air intake 101 from being blocked by water.

[0035] like Figure 2As shown, in one embodiment, an intake baffle 210 is provided in the passage connecting the intake pipe 20 and the engine manifold 30. Air introduced into the intake pipe 20 by the intake port 101 can flow to the engine manifold 30 through the intake baffle 210. Furthermore, the intake baffle 210 can prevent water from flowing from the intake pipe 20 to the engine manifold 30. In other words, in this embodiment, the intake pipe 20 can prevent water from entering the engine manifold 30, thus avoiding water ingress into the engine and preventing a decrease in engine combustion efficiency due to moisture intrusion. Here, the intake baffle 210 can achieve air-water separation through its aperture; specifically, the intake baffle 210 can be filled with small holes that only allow gas molecules to pass through, while liquid water cannot penetrate due to surface tension. It is understood that in other embodiments, the air intake baffle 210 can also separate liquid water by changing the airflow direction and using inertia; or, the air intake baffle 210 can be installed with a breathable and waterproof membrane to block liquid water, which will not be elaborated here.

[0036] like Figure 2 As shown, in this embodiment, the intake pipe 20 is provided with a drain hole 23, and the intake pipe 20 can drain water blocked by the intake baffle 210 through the drain hole 23, thus preventing water from accumulating in the intake pipe 20 and ensuring that the engine does not take in water. Here, along the air flow direction in the intake pipe 20, the drain hole 23 is located in front of the intake baffle 210; and in the vehicle height direction, the drain hole 23 is located below the intake baffle 210, so that the water blocked by the intake baffle 210 can be automatically drained out through the drain hole 23 under its own gravity, which facilitates drainage of the intake pipe 20. It should be noted that the specific number of drain holes 23 and the distance between the drain holes 23 and the intake baffle 210 in the air flow direction in the intake pipe 20 can be specifically set according to the usage requirements, and will not be elaborated here.

[0037] like Figure 1 As shown, in one embodiment, the engine intake system 100 further includes an air filter 40, and the engine manifold 30 is connected to the outlet 22 through the air filter 40. That is, the air discharged from the outlet 22 of the intake pipe 20 needs to be filtered by the air filter before flowing into the engine manifold to meet the engine intake requirements. It should be noted that the specific structure of the air filter 40 and the working principle of how it filters the air discharged from the outlet 22 of the intake pipe 20 are all conventional methods in existing vehicles, and will not be elaborated here.

[0038] like Figure 2As shown, in this embodiment, a pipe connector 41 is connected and communicates with the air filter 40, and the portion of the air outlet 22 on the air intake pipe 20 can be inserted into the pipe connector 41 and connected and sealed with the pipe connector 41, so that the air intake pipe 20 communicates with the air filter 40, thereby realizing the assembly connection between the air intake pipe 20 and the air filter 40. Here, the air intake baffle 210 is installed in the pipe connector 41.

[0039] In this embodiment, the air filter 40 is provided with a compensating air passage (not shown), which is connected in parallel with the intake pipe 20, and the engine manifold 30 can intake air through the compensating air passage. That is to say, the engine intake system 100 in this embodiment can use the compensating air passage to compensate for the intake pressure, thus ensuring that the air pressure when the engine intake system 100 introduces air can meet the operating requirements of the engine.

[0040] In this embodiment, the engine intake system 100 has a first intake state, a second intake state, and a third intake state. When the engine intake system 100 is in the first intake state, the engine manifold 30 can intake air through the intake port 101. When the engine intake system 100 is in the second intake state, the engine manifold 30 can simultaneously intake air through the intake port 101 and the compensating air passage. When the engine intake system 100 is in the third intake state, the engine manifold 30 can intake air through the compensating air passage.

[0041] In this embodiment, a pressure check valve (not shown) is installed in the compensating air passage. That is, the engine intake system 100 of this embodiment can use the pressure check valve to control the intake of the compensating air passage, allowing the compensating air passage to moderately increase the intake pressure and prevent unstable engine combustion. Here, the specific structure of the pressure check valve can adopt conventional methods of the prior art, and will not be elaborated upon here.

[0042] It should be noted that, since the compensation air passage and intake pipe 20 in this embodiment are connected to the engine manifold 30 in parallel, the required air pressure for the engine manifold 30 is equal to the air pressure values ​​in the compensation air passage and intake pipe 20 respectively. The pressure check valve has a preset pressure value. Obviously, the pressure check valve can only be opened when the required air pressure for the engine manifold 30 is greater than the preset pressure value, thus supplementing the engine manifold 30 with air from the compensation air passage. Therefore, during the development and design of the engine intake system 100, the timing of the compensation air passage's opening for engine compensation intake can be determined by designing different preset pressure values ​​for the pressure check valve.

[0043] like Figure 1As shown, in this embodiment, the pressure check valve is detachably connected to the air filter 40, allowing it to be removed from the air filter 40 and opening the compensating air passage. This enables the vehicle to intake air into the engine using the compensating air passage when the air intake 101 is blocked, thus meeting the vehicle's normal operating needs under special conditions. Here, the aforementioned special operating conditions specifically refer to situations where the vehicle needs to wade through water with a water level higher than the air intake 101. It should be noted that the pressure check valve in this embodiment can be integrated onto a panel 50, which is detachably connected to the air filter 40, allowing the user to install and remove the pressure check valve from the air filter 40 via the panel 50.

[0044] like Figure 1 As shown, this application also provides a vehicle, including a front-end module frame 200 and the aforementioned engine intake system 100; in the vehicle's length direction X, the front-end module frame 200 is disposed opposite to the rear of the frame 11, and the intake pipe 20 is partially disposed above the front-end module frame 200 in the vehicle's height direction Z and abuts against and limits the front-end module frame 200, so that the front-end module frame 200 can support the intake pipe 20, thereby improving the stability of the intake pipe 20 installed in the vehicle. Here, the aforementioned front-end module frame 200 specifically refers to the frame structure of the front-end module frame.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. An engine intake system, characterized in that, The engine intake system (100) includes: The vehicle lower grille (10) includes a frame (11) with an air inlet (101) on one of its side walls (111) in the vehicle width direction. An air intake pipe (20) is provided on the outside of the front module frame (200) and is independently provided relative to the front module frame (200). The air intake pipe (20) has an air intake end (21) and an air outlet end (22). The air intake end (21) is connected to the air inlet (101). An engine manifold (30) is used to connect to an engine. The engine manifold (30) is connected to the outlet (22), and the engine manifold (30) can intake air into the engine through the inlet (101).

2. The engine intake system according to claim 1, characterized in that, The frame (11) also includes a top wall (112) and a bottom wall (113), the top wall (112) and the bottom wall (113) being disposed on the upper and lower sides of the side wall (111) in the vehicle height direction; In the vehicle height direction, the distance between the air intake (101) and the top wall (112) is less than the distance between the air intake (101) and the bottom wall (113).

3. The engine intake system according to claim 1, characterized in that, An intake baffle (210) is provided on the passage connecting the intake pipe (20) and the engine manifold (30). Air introduced into the intake pipe (20) by the intake port (101) can flow to the engine manifold (30) through the intake baffle (210). Furthermore, the intake baffle (210) can prevent water in the intake pipe (20) from flowing to the engine manifold (30).

4. The engine intake system according to claim 3, characterized in that, The air intake pipe (20) is provided with a drain hole (23), and the air intake pipe (20) can drain water blocked by the air intake baffle (210) through the drain hole (23).

5. The engine intake system according to claim 4, characterized in that, Along the direction of air flow in the air intake pipe (20), the drain hole (23) is located in front of the air intake baffle (210); Furthermore, in the vehicle height direction, the drain hole (23) is located below the air intake baffle (210).

6. The engine intake system according to claim 1, characterized in that, The engine intake system (100) also includes an air filter (40), and the engine manifold (30) is connected to the outlet (22) through the air filter (40); Furthermore, the air filter (40) is provided with a compensation air passage, which is connected in parallel with the intake pipe (20), and the engine manifold (30) can intake air through the compensation air passage.

7. The engine intake system according to claim 6, characterized in that, The engine intake system (100) has a first intake state, a second intake state and a third intake state; When the engine intake system (100) is in the first intake state, the engine manifold (30) can take in air through the intake port (101); When the engine intake system (100) is in the second intake state, the engine manifold (30) can simultaneously intake air through the intake port (101) and the compensation air passage; When the engine intake system (100) is in the third intake state, the engine manifold (30) can take in air through the compensation air passage.

8. The engine intake system according to claim 6, characterized in that, A pressure check valve is installed inside the compensation airway.

9. The engine intake system according to claim 8, characterized in that, The pressure check valve is detachably connected to the air filter (40).

10. A vehicle, characterized in that, Includes a front-end module frame (200) and an engine intake system (100) as described in any one of claims 1 to 9. In the length direction of the vehicle, the front module frame (200) is disposed behind the frame (11), and the air intake pipe (20) is partially disposed above the front module frame (200) in the height direction of the vehicle and abuts against and limits the front module frame (200).

Images