Air inlet silencer, air inlet system and vehicle

Abstract

The utility model relates to the technical field of vehicles, and provides an air inlet silencer, an air inlet system and a vehicle, the air inlet silencer is used for the air inlet system of the vehicle, the air inlet silencer comprises a shell with an inner cavity, the inner cavity forms a resonant cavity, the shell is provided with an air inlet and an air outlet which communicate with the resonant cavity, the air inlet is used for communicating with an air filter, and the air outlet is used for communicating with an air outlet. The air outlet is communicated with an engine. According to the scheme, the problem that in the prior art, noise of an engine air inlet system is large can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to an air intake muffler, an air intake system and a vehicle. BACKGROUND

[0002] The air intake system mainly provides clean, dry, appropriate temperature and sufficient air to the engine to meet the full combustion requirement of the engine fuel, maximally reduce the engine wear and maintain the best engine performance, and is an important part of a vehicle (such as a light truck). CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides an air intake muffler, an air intake system and a vehicle to solve the problem of large noise of the engine air intake system in the prior art.

[0004] In order to achieve the above purpose, the present application provides the following technical solutions:

[0005] An air intake muffler for an air intake system of a vehicle, comprising a shell having an inner cavity, the inner cavity forming a resonance cavity, the shell being provided with an air inlet and an air outlet communicating with the resonance cavity, the air inlet being used for communicating with an air cleaner, and the air outlet being used for communicating with an engine.

[0006] Optionally, the shell is provided with mounting seats at two opposite ends thereof, and the two mounting seats are respectively used for connecting with two expansion water tank supports arranged at intervals.

[0007] Optionally, the volume of the resonance cavity is V, and 8.95L≤V≤9.05L.

[0008] Optionally, the volume V of the resonance cavity is 9L.

[0009] Optionally, the shell comprises a main body portion, an air inlet interface portion and an air outlet interface portion, the air inlet interface portion is provided with the air inlet, the air outlet interface portion is provided with the air outlet, and the air inlet interface portion and the air outlet interface portion are protruded from the main body portion.

[0010] Optionally, the air intake muffler is a blow molding body.

[0011] Optionally, the material of the air intake muffler is HDPE.

[0012] An air intake system, comprising an air cleaner outlet pipe, an engine air inlet pipe and the air intake muffler according to any one of the above, the air cleaner outlet pipe being in communication with the air inlet of the air intake muffler, and the engine air inlet pipe being in communication with the air outlet of the air intake muffler.

[0013] A vehicle comprising the air intake system as described above, or comprising the air intake silencer as described in any one of the above.

[0014] Optionally, the vehicle comprises a cab, a cargo box and at least two expansion tank supports for mounting the expansion tank, the two expansion tank supports are spaced apart, the air intake silencer is arranged between the cab and the cargo box, and opposite ends of the shell are provided with mounting seats, and the two mounting seats are connected with the two expansion tank supports respectively to mount the air intake silencer between the two expansion tank supports.

[0015] In the embodiment of the present application, the shell of the air intake silencer is surrounded by the shell wall to form a resonance cavity, and the noise in the gas can be reduced or even eliminated after the gas enters the resonance cavity. The air intake silencer is used in the air intake system of the vehicle, which can effectively reduce the noise of the air intake system of the vehicle, thereby reducing the noise of the cab and improving the subjective comfort of the occupants in the cab and the use experience of the occupants in the cab. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0017] Fig. 1 A structural schematic diagram of the air intake silencer provided in the embodiment of the present application;

[0018] Fig. 2 A sectional view of the air intake silencer provided in the embodiment of the present application;

[0019] Fig. 3 A structural schematic diagram of the air intake system provided in the embodiment of the present application.

[0020] In Figs. 1-3 , the air intake silencer comprises:

[0021] 100, air intake silencer; 110, shell; 111, resonance cavity; 112, main body part; 113, air inlet interface part; 114, air outlet interface part; 120, mounting seat;

[0022] 200, air cleaner; 210, air cleaner air outlet pipe;

[0023] 300, engine air intake pipe;

[0024] 400, expansion tank support. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] It is found that the vehicle has the problem of excessive noise in the cab during road test, for example, the 1.8L methanol range-extended light truck is found to have the following problems during road test:

[0027] a. When the power generation of the range extender is 25kW, the noise at a uniform speed of 30km / h is 64.4dBA, which does not meet the requirement of VTS≤62dBA; the noise at a uniform speed of 40km / h is 64.6dBA, which does not meet the requirement of VTS≤63dBA.

[0028] b. When the power generation of the range extender is 30kW, the noise at a uniform speed of 50km / h is 65.7dBA, which does not meet the requirement of VTS≤65dBA.

[0029] c. When the power generation of the range extender is 35kW, the noise at a uniform speed of 60km / h is 68.3dBA, which does not meet the requirement of VTS≤67dBA; the noise at a uniform speed of 70km / h is 69.1dBA, which does not meet the requirement of VTS≤69dBA.

[0030] d. When the power generation of the range extender is 60kW, the noise at a uniform speed of 80km / h is 75.9dBA, which does not meet the requirement of VTS≤75dBA.

[0031] Excessive noise in the cab will affect the subjective comfort and use experience of the driver, and the noise of the intake system of the vehicle has a significant impact on the noise in the cab. Therefore, in order to solve the problem that the noise of the engine intake system in the prior art is large, resulting in large noise in the cab, affecting the subjective comfort and use experience of the occupants in the cab, the present application provides an intake muffler.

[0032] As shown in Figs. 1-3 The present application provides an intake muffler, which is used in the intake system of a vehicle. The intake muffler 100 includes a shell 110 having an inner cavity, and the inner cavity forms a resonance cavity 111. It can also be understood that the shell 110 is surrounded by a shell wall to form a cavity, i.e., the resonance cavity 111. The shell 110 is provided with an air inlet and an air outlet which communicate with the resonance cavity 111. The air inlet is used to communicate with an air cleaner 200, and the air outlet is used to communicate with an engine.

[0033] In this way, the gas filtered by the air filter 200 enters the resonant cavity 111 through the air inlet of the air intake muffler 100, and then enters the engine through the air outlet of the air intake muffler 100. After the noise in the gas enters the resonant cavity 111, the non-resonant frequency components in the noise are attenuated, so that the overall noise level is reduced, the noise of the engine intake is effectively eliminated, and the noise of the intake system is effectively reduced.

[0034] In the embodiment of the present application, the shell 110 of the air intake muffler 100 is surrounded by a shell wall to form a resonant cavity 111. The noise in the gas can be reduced or even eliminated after the gas enters the resonant cavity 111. The air intake muffler 100 is used in the intake system of the vehicle, which can effectively reduce the noise of the intake system of the vehicle, thereby reducing the noise in the cab, and further improving the subjective comfort of the occupants in the cab and the use experience of the occupants in the cab.

[0035] In an alternative embodiment, the air intake muffler 100 can be installed on the engine in the engine compartment by a connection method such as bolt connection. However, due to the complex environment and small space near the engine, the installation environment of the air intake muffler 100 has high requirements, which makes the installation of the air intake muffler 100 difficult. In addition, since the temperature of the engine will rise during operation, installing the air intake muffler 100 on the engine will also shorten the service life of the air intake muffler 100. In addition, since the engine will vibrate during operation, installing the air intake muffler 100 on the engine will also require higher strength of the air intake muffler 100.

[0036] In the embodiment of the present application, the air intake muffler 100 can also include a mounting seat 120, which can be protruded from the outer wall of the shell 110. The mounting seat 120 is used to connect with the expansion tank bracket 400. Alternatively, the mounting seat 120 can be connected with the expansion tank bracket 400 by bolts. Alternatively, the mounting seat 120 can be connected with the expansion tank bracket 400 by a connecting plate, that is, one end of the connecting plate can be connected with the mounting seat 120 by bolts, and the other end can be connected with the expansion tank bracket 400 by bolts. Compared with the mode that the mounting seat 120 is directly connected with the expansion tank bracket 400 by bolts, connecting the mounting seat 120 and the expansion tank bracket 400 by the connecting plate can make the installation position of the air intake muffler 100 more flexible.

[0037] Further, the vehicle has at least two expansion tank supports 400 for mounting the expansion tank, and the housing 110 has two mounting seats 120 arranged at opposite ends of the housing 110, and the two mounting seats 120 can be connected with the two expansion tank supports 400 of the vehicle respectively to mount the intake muffler 100 between the two expansion tank supports, and the two mounting seats 120 are arranged at opposite ends of the housing 110, so that the stress of the mounted intake muffler 100 is more uniform, which is beneficial to improve the mounting stability of the intake muffler 100.

[0038] Of course, after the positions of the two expansion tank supports 400 on the vehicle change, the positions of the two mounting seats 120 can be adaptively adjusted according to the positions of the two expansion tank supports 400 on the vehicle, for example, the two mounting seats 120 can also be arranged at adjacent two ends of the housing 110.

[0039] The components near the expansion tank of the vehicle are small, and the space is relatively large, so mounting the intake muffler 100 between the two expansion tank supports 400 can reduce the mounting requirements and difficulty of the intake muffler 100; the temperature near the expansion tank support 400 is lower than that of the running engine, so mounting the intake muffler 100 between the two expansion tank supports 400 can improve the service life of the intake muffler 100; during the operation of the vehicle, the vibration amplitude of the expansion tank support 400 is smaller than that of the engine, so mounting the intake muffler 100 between the two expansion tank supports 400 can reduce the strength requirements of the intake muffler 100.

[0040] In addition, the larger the volume of the resonance cavity 111 of the intake muffler 100 is, the better the sound attenuation effect is, and if the intake muffler 100 is mounted on the engine, due to the small mounting space, the volume of the intake muffler 100 is limited, which can cause poor sound attenuation effect, and the intake muffler 100 in the embodiment is mounted between the two expansion tank supports 400, which can increase the volume of the resonance cavity 111, thereby improving the sound attenuation effect of the intake muffler 100.

[0041] In the embodiment of the application, the volume of the resonance cavity 111 is V, and 8.95L≤V≤9.05L (i.e. 9L±5%), for example: the volume of the resonance cavity 111 can be 8.95L, can be 9L, can be 9.05L. In this case, the intake muffler 100 can eliminate noise with a frequency of 1000Hz or more.

[0042] The shell 110 can include a main body part 112, an air inlet interface part 113 having an air inlet, and an air outlet interface part 114 having an air outlet, the air inlet interface part 113 and the air outlet interface part 114 both protrude from the main body part 112, compared with the technical solution of directly opening the air inlet and the air outlet on the main body part 112 of the shell 110, the design that the air inlet interface part 113 and the air outlet interface part 114 both protrude from the main body part 112 facilitates the connection of the air inlet and the air cleaner outlet pipe 210, and facilitates the connection of the air outlet and the engine air inlet pipe 300.

[0043] In an optional embodiment, the air inlet muffler 100 can be an injection molded structure.

[0044] In the embodiment of the application, the air inlet muffler 100 can be a blow molding body, that is, the air inlet muffler 100 can be processed by a blow molding process, compared with processing the air inlet muffler 100 by injection molding, the blow molding process has low production cost and high production efficiency.

[0045] The material of the air inlet muffler 100 can be HDPE (High Density Polyethylene), the HDPE material itself has high density and strength, can effectively absorb and isolate noise, and its elastic properties can reduce the generation of vibration noise, therefore, the air inlet muffler 100 in the embodiment of the application adopts the HDPE material, which can improve the noise reduction effect of the air inlet muffler 100.

[0046] Based on the above-mentioned air inlet muffler 100, the embodiment of the application further provides an air inlet system, which includes an air cleaner outlet pipe 210, an engine air inlet pipe 300, and the above-mentioned air inlet muffler 100, the air cleaner outlet pipe 210 can be a hose, the air cleaner outlet pipe 210 communicates with the air inlet of the air inlet muffler 100, so as to guide the filtered gas into the air inlet muffler 100, the engine air inlet pipe 300 communicates with the air outlet of the air inlet muffler 100, so as to connect the gas flow through the air inlet muffler 100 to the engine air inlet. Optionally, the air cleaner outlet pipe 210 and the air inlet interface part 113 of the air inlet muffler 100 can be connected by plug-in, or can be connected by other ways such as clamp connection, so as to make the air cleaner outlet pipe 210 communicate with the air inlet of the air inlet muffler 100, the engine air inlet pipe 300 and the air outlet interface part 114 of the air inlet muffler 100 can be connected by plug-in, or can be connected by other ways such as clamp connection, so as to make the engine air inlet pipe 300 communicate with the air outlet of the air inlet muffler 100.

[0047] Since the intake system has the intake muffler 100 as described above, the beneficial effects brought by the intake system from the intake muffler 100 are described above, and will not be repeated here.

[0048] Based on the above intake system, the embodiment of the present application further provides a vehicle, which comprises the above intake system, or comprises the above intake muffler 100. Optionally, the vehicle in the embodiment of the present application can be a range-extended light truck, and can be a methanol range-extended light truck, such as a 1.8L methanol range-extended light truck. Since the vehicle has the above intake system or intake muffler 100, the beneficial effects brought by the vehicle from the intake system or intake muffler 100 are described above, and will not be repeated here.

[0049] In a further technical solution, the vehicle comprises a cab, a cargo box, and at least two expansion tank supports 400 for mounting the expansion tank. The two expansion tank supports 400 are spaced apart, and the intake muffler 100 is arranged between the cab and the cargo box. The opposite ends of the shell 110 can each be provided with a mounting seat 120, and the two mounting seats 120 can be connected with the two expansion tank supports 400, respectively, so as to mount the intake muffler 100 between the two expansion tank supports 400.

[0050] The components near the expansion tank of the vehicle are less, and the space is relatively large. Therefore, mounting the intake muffler 100 between the two expansion tank supports 400 can reduce the mounting requirements and difficulty of the intake muffler 100. The temperature near the expansion tank support 400 is lower than that of the engine in operation. Therefore, mounting the intake muffler 100 between the two expansion tank supports 400 can improve the service life of the intake muffler 100. During the operation of the vehicle, the vibration amplitude of the expansion tank support 400 is smaller than that of the engine. Therefore, mounting the intake muffler 100 between the two expansion tank supports 400 can reduce the strength requirements of the intake muffler 100. Mounting the intake muffler 100 between the two expansion tank supports 400 makes the intake muffler 100 have a larger mounting space, so the volume of the resonance cavity 111 can be increased, thereby improving the muffling effect of the intake muffler 100.

[0051] The basic principles of the present application are described above in combination with specific embodiments. However, it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and are not limited. These advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above specific details are only for the purpose of example and understanding, and are not limited to the above specific details. The present application must be implemented using the above specific details.

[0052] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration must be as shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have", and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably, unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0053] It should also be noted that in the devices, apparatuses and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0054] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects without departing from the scope of the present application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0055] It should be understood that the adjectives "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for more clearly describing the technical solutions, and cannot be used to limit the protection scope of the present application.

[0056] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. An intake muffler, characterized in that, For a vehicle's air intake system, the air intake muffler (100) includes a housing (110) having an inner cavity forming a resonant cavity (111). The housing (110) has an air inlet and an air outlet communicating with the resonant cavity (111). The air inlet is used to communicate with an air filter (200), and the air outlet is used to communicate with an engine.

2. The intake muffler according to claim 1, characterized in that, The housing (110) has mounting seats (120) at both opposite ends, and the two mounting seats (120) are respectively used to connect to two spaced expansion tank supports (400).

3. The intake muffler according to claim 1 or 2, characterized in that, The volume of the resonant cavity (111) is V, where 8.95L ≤ V ≤ 9.05L.

4. The intake muffler according to claim 3, characterized in that, The volume of the resonant cavity (111) is V = 9L.

5. The intake muffler according to claim 1, characterized in that, The housing (110) includes a main body (112), an air inlet (113) and an air outlet (114). The air inlet (113) has an air inlet and the air outlet (114) has an air outlet. Both the air inlet (113) and the air outlet (114) protrude from the main body (112).

6. The intake muffler according to claim 1, characterized in that, The intake muffler (100) is a blow-molded body.

7. The intake muffler according to claim 1, characterized in that, The intake muffler (100) is made of HDPE.

8. An intake system, characterized in that, It includes an air filter outlet pipe (210), an engine intake pipe (300), and an intake muffler (100) as described in any one of claims 1-7, wherein the air filter outlet pipe (210) is connected to the air inlet of the intake muffler (100), and the engine intake pipe (300) is connected to the air outlet of the intake muffler (100).

9. A vehicle, characterized in that, Includes the intake system as described in claim 8, or includes the intake muffler (100) as described in any one of claims 1-7 above.

10. The vehicle according to claim 9, characterized in that, The vehicle includes a cab, a cargo box, and at least two expansion tank brackets (400) for mounting expansion tanks. The two expansion tank brackets (400) are spaced apart. The intake muffler (100) is located between the cab and the cargo box. The housing (110) has mounting seats (120) protruding from both opposite ends. The two mounting seats (120) are respectively connected to the two expansion tank brackets (400) to mount the intake muffler (100) between the two expansion tank brackets (400).

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