Engine sound insulation cover integrated with air compressor noise elimination function and engine
By setting up an intake branch and a shunt return port between the engine sound insulation cover and the air compressor, the problem of poor noise and structural compactness of the air compressor is solved, and effective noise reduction and overall structural compactness are achieved.
Patent Information
- Application Number
- CN202422667489.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-11-01
AI Technical Summary
In the prior art, the noise problem generated by the air compressor of light truck trucks at idle speed, and the overall structure is poorly compact and inconveniently arranged after adding the muffler.
Design an engine sound insulation cover with integrated sound-absorbing function of air compressor. By setting up an intake branch between the sound insulation cover and the engine, and using the diversion port and the return port to form a sound insulation chamber, the interference and sound insulation of the airflow path can be achieved, reducing structural interference to other components, and improving the overall structural compactness.
It effectively reduces the noise of the air compressor and reduces the space occupied by the muffler. It has a compact structure, simple layout, good overall aesthetics, and further noise reduction effect is achieved through airflow path interference.
Smart Images
Figure CN223177632U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of vehicle engine technology, and specifically relates to an engine soundproof cover and an engine with integrated air compressor silencer function. Background Art
[0002] Most light trucks on the market currently use air brakes, and the air compressor's unusual noise is a common problem when the vehicle is idling. As users' demands for vehicle comfort continue to rise, air compressor noise has become a pressing issue that needs to be addressed.
[0003] In the prior art, in order to solve the problem of air compressor noise, many vehicles install sound insulation covers on the engines and also add air compressor mufflers (generally expansion mufflers). This method has a certain effect, but when assembling the air compressor muffler, the muffler occupies a large space, resulting in poor overall structural compactness and inconvenient layout. Utility Model Content
[0004] The present application provides an engine soundproof cover and an engine with an integrated air compressor silencer function, which solves the problem of poor assembly compactness when using an air compressor silencer to eliminate noise.
[0005] The technical solutions adopted in this application are:
[0006] An engine soundproof cover with integrated air compressor silencer function, wherein a soundproof cover and an air compressor are provided at the engine, the air compressor comprises an intake manifold connected to the engine and an intake branch pipe connected to the intake manifold, the intake branch pipe is provided with a diversion port and a return port communicated with the intake manifold, and a soundproof cavity for arranging the intake branch pipe is provided between the soundproof cover and the engine.
[0007] Preferably, the soundproof cover includes a front surface facing the outside and a back surface facing the engine, and the soundproof cover is covered on the engine so that the back surface of the soundproof cover and the engine enclose the soundproof cavity.
[0008] Preferably, part of the air intake manifold is detachably connected to the reverse side of the sound insulation cover.
[0009] Preferably, the air intake branch pipe is fixed to the reverse side of the sound insulation cover, or the air intake branch pipe is detachably connected to the reverse side of the sound insulation cover.
[0010] Preferably, the soundproof cover is provided with a first connection port for the air intake manifold to pass through and a second connection port for the air intake manifold to pass through, and the diversion port and the return port are located between the first connection port and the second connection port.
[0011] Preferably, a first sealing member is provided between the first connecting port and the intake manifold, and a second sealing member is provided between the second connecting port and the intake manifold.
[0012] Preferably, both ends of the intake manifold are respectively connected to the outlet of the vehicle intake pipe and the inlet of the air compressor. The gas includes a first pipeline flowing along: the outlet of the intake pipe - the intake manifold - the inlet of the air compressor, and also includes a second pipeline flowing along: the outlet of the intake pipe - the intake manifold - the shunt port - the intake branch pipe - the return port - the intake manifold - the inlet of the air compressor. The difference in length between the second pipeline and the first pipeline is an odd multiple of half a wavelength.
[0013] Preferably, the intake manifold and the intake branch pipe are integrally formed.
[0014] Preferably, a plurality of intake branch pipes are provided.
[0015] An engine, wherein an air compressor is provided at the engine, the engine is provided with a sound insulation cover as in any of the above preferred options, and the air compressor is provided with an intake manifold and an intake branch pipe as in any of the above preferred options.
[0016] Due to the adoption of the above technical solutions, the beneficial effects obtained by this application are as follows:
[0017] (1) An intake branch pipe is provided and the intake branch pipe is arranged between the sound insulation cover and the engine. The sound insulation cover shields the intake branch pipe, and there is no need to provide an air compressor muffler. The airflow noise is weakened by the shielding of the sound insulation cover to achieve a noise reduction effect. Moreover, the volume of the air compressor muffler is larger than that of the intake branch pipe. The layout space required for setting the intake branch pipe in this solution is small, the structure and layout method are simple, the structural interference with other components is reduced, and the overall structure is beneficial to be compact.
[0018] In addition, the intake branch pipe is connected to the intake manifold through the shunt port and the return port. The air flow flows out from the shunt port and then flows through the return port to merge into the intake manifold again after flowing along the intake branch pipe. It collides with the air flow that always flows in a single path along the intake manifold. Since the flow paths of the two air flows are different, further interference noise reduction can be achieved through the phase of the air flow after confluence, achieving a noise reduction effect.
[0019] (2) After the sound insulation cover is closed, it encloses the engine, and a sound insulation cavity is formed by using the space between the back surface of the sound insulation cover and the engine. It can not only ensure the sound insulation effect of the sound insulation cover, but also provide a placement space for the intake branch pipe, reasonably utilize the space to realize the layout of the intake branch pipe, improve the overall structural compactness, and at the same time, there are fewer components exposed to the outside, and the overall aesthetics is better.
[0020] (3) A part of the intake manifold passes through the sound insulation cavity through the first connection port and the second connection port. At the same time, the positions of the shunt port and the return port of the intake branch pipe connected to the intake manifold are such that the intake branch pipe is connected to this part of the intake manifold, and both are located in the sound insulation cavity. The space is reasonably utilized, the overall structure is compact, and the noise reduction effect can be further achieved by using the sound insulation function of the sound insulation cover.
[0021] (4) An intake branch pipe is provided so that the compressed air is divided into different paths when flowing along the pipeline. One of the paths is to flow directly along the intake main pipe, i.e. the first pipeline; the other path is to flow along the intake main pipe to the intake branch pipe, and then to flow into the intake main pipe from the return port through the intake branch pipe, i.e. the second pipeline. According to the principle of interference noise reduction, when the difference between the second pipeline and the first pipeline is set to an odd multiple of half the wavelength, the vibration of the wave point when it flows back to the first pipeline through the second pipeline is weakened, thereby achieving interference noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0023] Figure 1 This is a schematic diagram of the assembly structure of the soundproof cover in one embodiment of the present utility model;
[0024] Figure 2 This is a schematic diagram of the front structure of the sound insulation cover in one embodiment of the present utility model;
[0025] Figure 3 This is a schematic diagram of the reverse structure of the sound insulation cover in one embodiment of the present utility model;
[0026] Figure 4 Schematic diagram of the air flow path in one embodiment of the present invention.
[0027] Description of reference numerals:
[0028] 1-engine, 2-soundproof cover, 21-front side of the soundproof cover, 22-back side of the soundproof cover, 3-intake manifold, 4-intake branch pipe, 41-diversion port, 42-return port, 5-first connection port, 6-second connection port, 7-air compressor. DETAILED DESCRIPTION
[0029] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.
[0030] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.
[0031] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. These terms are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present application.
[0032] In the present application, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0033] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0034] The solution of the present application provides an engine sound insulation cover integrating the sound insulation function of an air compressor, as Figures 1 to 4 shown, there is a sound insulation cover 2 and an air compressor 7 provided at the engine 1. The air compressor 7 includes an intake main pipe 3 connected to the engine 1 and an intake branch pipe 4 connected to the intake main pipe 3. The intake branch pipe 4 is provided with a diversion port 41 and a return port 42 communicating with the intake main pipe 3. There is a sound insulation cavity for arranging the intake branch pipe 4 between the sound insulation cover 2 and the engine 1.
[0035] The intake branch pipe 4 is provided and arranged between the sound insulation cover 2 and the engine 1. The sound insulation cover 2 shields the intake branch pipe 4, eliminating the need to set up an air compressor 7 muffler. By the shielding of the sound insulation cover 2, the airflow noise is reduced, achieving a noise reduction effect. Moreover, the volume of the air compressor muffler is larger than that of the intake branch pipe 4. The layout space required for arranging the intake branch pipe 4 in this solution is small, the structure and layout method are simple, reducing the structural interference with other components, and being beneficial to the overall structural compactness.
[0036] In addition, the intake manifold 4 is connected to the intake main pipe 3 through a shunt port 41 and a return port 42. The air flow flows out from the shunt port 41, flows along the intake manifold 4, and then merges into the intake main pipe 3 again through the return port 42. It collides with the air flow that always flows in a single path along the intake main pipe 3. Since the flow paths of the two air flows are different, interference noise reduction can be further achieved through the air flow phase after confluence, realizing the noise reduction effect.
[0037] In one embodiment, the sound insulation cover 2 includes a front side 21 of the sound insulation cover facing the outside and a back side 22 of the sound insulation cover facing the engine 1. The sound insulation cover 2 covers the engine 1 so that the back side 22 of the sound insulation cover and the engine 1 enclose a sound insulation cavity.
[0038] After the sound insulation cover 2 is covered and encloses with the engine , the space between the back side 22 of the sound insulation cover and the engine 1 is used to form a sound insulation cavity, which can not only ensure the sound insulation effect of the sound insulation cover 2, but also provide a placement space for the intake manifold 4, reasonably utilize the space to realize the layout of the intake manifold 4, improve the overall structural compactness, and at the same time, there are fewer components exposed to the outside, and the overall aesthetics is better.
[0039] Preferably, a part of the intake main pipe 3 is detachably connected to the back side 22 of the sound insulation cover. Through the detachable connection between the intake main pipe 3 and the back side 22 of the sound insulation cover, the position of the intake main pipe 3 in the sound insulation cavity is defined. Since the surface of the engine 1 covered by the sound insulation cover 2 is irregular, positioning the intake main pipe 3 can avoid collision between the intake main pipe 3 and other parts of the back side 22 of the sound insulation cover. On the one hand, it protects the sound insulation cover 2, the intake main pipe 3 and the engine 1, and on the other hand, it avoids generating collision noise.
[0040] As an implementation manner in this embodiment, the intake manifold 4 is fixed to the back side 22 of the sound insulation cover, or the intake manifold 4 is detachably connected to the back side 22 of the sound insulation cover.
[0041] It can be understood that when the intake manifold 4 is fixed to the sound insulation cover 2, the intake manifold 4 and the intake main pipe 3 need to be butt-jointed and installed during installation to realize the connection between the intake manifold 4 and the intake main pipe 3. In this way, during the installation process, only the intake manifold 4 and the intake main pipe 3 need to be butted to determine the layout positions of the intake manifold 4 and the intake main pipe 3.
[0042] Preferably, the intake manifold 4 is detachably connected to the back side 22 of the sound insulation cover, which is convenient for determining the positions of the intake manifold 4 and the intake main pipe 3 connected thereto in the sound insulation cavity.
[0043] In one embodiment, the sound insulation cover 2 is provided with a first connection port 5 through which the intake main pipe 3 penetrates and a second connection port 6 through which the intake main pipe 3 exits. The shunt port 41 and the return port 42 are located between the first connection port 5 and the second connection port 6.
[0044] A portion of the air intake main pipe 3 passes through the sound insulation cavity through the first connecting port 5 and the second connecting port 6. At the same time, the branch port 41 and the return port 42 of the air intake branch pipe connected to the air intake main pipe 3 are positioned so that the air intake branch pipe is connected to the portion of the air intake main pipe 3. Both are located in the sound insulation cavity at the same time, which makes rational use of space. The overall structure is compact and can further utilize the sound insulation effect of the sound insulation cover 2 to reduce noise.
[0045] Preferably, a first sealing member is provided between the first connecting port 5 and the intake manifold 3 , and a second sealing member is provided between the second connecting port 6 and the intake manifold 3 .
[0046] The first sealing member and the second sealing member may be rubber sealing washers to reduce friction damage and friction noise caused by vibration between the intake manifold 3 and the sound insulation cover 2 .
[0047] Preferably, the two ends of the intake manifold 3 are respectively connected to the intake pipe outlet of the whole vehicle and the air compressor inlet. The gas includes a first pipeline flowing along: intake pipe outlet-intake manifold 3-air compressor inlet, and also includes a second pipeline flowing along: intake pipe outlet-intake manifold 3-diversion port 41-intake branch pipe 4-return port 42-intake manifold 3-air compressor inlet. The difference between the length of the second pipeline and the length of the first pipeline is an odd multiple of half the wavelength.
[0048] An intake branch pipe 4 is provided so that the compressed air is divided into different paths when flowing along the pipeline, one of which is directly circulated along the intake main pipe 3, namely the first pipeline; the other is branched along the intake main pipe 3 to the intake branch pipe 4, and then flows into the intake main pipe 3 through the return port 42 through the intake branch pipe 4, namely the second pipeline. According to the principle of interference silencer, when the difference between the second pipeline and the first pipeline is set to an odd multiple of half the wavelength, the vibration of the wave point when it flows back to the first pipeline through the second pipeline is weakened, thereby achieving interference silencer.
[0049] like Figure 4 As shown in the figure, the arrows indicate the airflow direction, where A is the vehicle's intake pipe outlet and C is the compressor inlet. ABC is one intake line, the first line, and ADEFC is the other intake line, the second line. The difference between the second line and the first line is an odd multiple of half a wavelength, achieving interference noise reduction.
[0050] In a preferred embodiment, the intake manifold 3 and the intake branch pipe 4 are integrally formed, which facilitates the smooth flow of compressed air, ensures the relative position stability of the intake manifold 3 and the intake branch pipe 4, and enhances the structural strength and connection stability of the intake manifold 3 and the intake branch pipe 4.
[0051] Preferably, a plurality of intake branch pipes 4 are provided to increase air flow branching.
[0052] In one embodiment, the present application includes an engine 1, an air compressor 7 is provided at the engine 1, the engine 1 is provided with a sound insulation cover 2 as in any one of the above embodiments, and the air compressor 7 is provided with an intake manifold 3 and an intake branch pipe 4 as in any one of the above.
[0053] What is not described in the present application can be achieved by adopting or referring to the prior art.
[0054] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.
[0055] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.
Claims
1. An engine soundproof cover integrating the noise elimination function of an air compressor, characterized in that A sound insulation cover and an air compressor are provided at the engine. The air compressor includes an intake main pipe connected to the engine and intake branch pipes connected to the intake main pipe. The intake branch pipes are provided with a diversion port and a reflux port communicating with the intake main pipe, and a sound insulation cavity for arranging the intake branch pipes is provided between the sound insulation cover and the engine.
2. The engine sound insulation cover integrating the noise elimination function of the air compressor according to claim 1, characterized in that, The sound insulation cover includes a front side facing the outside and a back side facing the engine. The sound insulation cover covers the engine so that the back side of the sound insulation cover and the engine enclose to form the sound insulation cavity.
3. The engine sound insulation cover integrating the silencing function of the air compressor according to claim 2, characterized in that Part of the intake main pipe is detachably connected to the back side of the sound insulation cover.
4. The engine sound insulation cover integrating the noise elimination function of the air compressor according to claim 2, characterized in that, The intake branch pipes are fixed to the back side of the sound insulation cover, or the intake branch pipes are detachably connected to the back side of the sound insulation cover.
5. An engine soundproof cover integrating the noise elimination function of an air compressor, characterized in that, The sound insulation cover is provided with a first connection port for the intake main pipe to penetrate into and a second connection port for the intake main pipe to penetrate out. The diversion port and the reflux port are located between the first connection port and the second connection port.
6. The engine sound insulation cover integrating the noise elimination function of an air compressor according to claim 5, wherein, A first seal is provided between the first connection port and the intake main pipe, and a second seal is provided between the second connection port and the intake main pipe.
7. An engine sound insulation cover integrating the noise elimination function of an air compressor, characterized in that, Both ends of the intake main pipe are respectively connected to the air outlet of the vehicle intake pipe and the air inlet of the air compressor. The gas includes a first pipeline flowing along: air outlet of the intake pipe - intake main pipe - air inlet of the air compressor, and also includes a second pipeline flowing along: air outlet of the intake pipe - intake main pipe - diversion port - intake branch pipe - reflux port - intake main pipe - air inlet of the air compressor. The difference in length between the second pipeline and the first pipeline is an odd multiple of half a wavelength.
8. The engine sound insulation cover integrating the noise elimination function of the air compressor according to claim 1, characterized in that, The intake main pipe and the intake branch pipes are integrally formed.
9. The engine sound insulation cover integrating the noise elimination function of an air compressor according to claim 1, characterized in that A plurality of intake branch pipes are provided.
10. An engine, wherein an air compressor is provided at the engine, characterized in that, The engine is provided with the sound insulation cover according to any one of claims 1-9, and the air compressor is provided with the intake main pipe and the intake branch pipes according to any one of claims 1-9.