Sound shield mounting structure, sound shield, and automobile

Abstract

The application provides a soundproof cover mounting structure, a soundproof cover and a car. The soundproof cover mounting structure comprises a ignition coil, an EGR pipe, an oil dipstick, an engine, an air filter assembly and a soundproof cover. The engine has a refueling cover. The ignition coil, the EGR pipe and the oil dipstick are arranged on the engine. The air filter assembly is connected to the top of the engine. The soundproof cover is located between the air filter assembly and the engine and avoids the ignition coil, the EGR pipe, the oil dipstick, the refueling cover and the connection between the engine and the air filter assembly. The soundproof cover mounting structure has a compact structure and good noise reduction effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a sound insulation cover mounting structure, a sound insulation cover and an automobile. BACKGROUND

[0002] With the continuous progress and development of automobile technology, people's requirements for the comfort of automobile driving are getting higher and higher, and NVH (noise, vibration and harshness) is an important indicator for people to evaluate automobiles. As the main noise source during automobile driving, the noise level of the engine is an important item in the evaluation of automobile NVH. When the engine is running, the combustion of the mixture in the combustion chamber will produce a large amount of noise, and the combustion noise will be transmitted to the air through the top of the cylinder head and the cylinder head cover. At the same time, when the valve train arranged on the top of the engine reciprocates, the relative motion and impact between the camshaft and the valve tappet, the valve and the valve seat will produce mechanical noise, which will also be transmitted to the air through the top of the cylinder head cover. Combustion noise and mechanical noise of valve train are the main noise sources on the top of the engine. Due to the requirement of engine lightweight, more and more engines use plastic material cylinder head cover, which has poor rigidity and large surface area. Combustion noise and mechanical noise are transmitted to the surface of the cylinder head cover in the form of structural vibration, and easily excite the vibration of air particles to form sound waves radiating to the top of the engine. The cylinder head cover has poor rigidity and low natural frequency, and is prone to resonance under certain operating conditions of the engine, resulting in aerodynamic noise. Therefore, the top noise problem of the engine has become the focus and difficulty of improving the NVH performance of the engine.

[0003] However, for the arrangement form of the top air filter assembly in the vehicle engine compartment, the conventional noise reduction measures are difficult to achieve due to the limitation of the structure. SUMMARY

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a sound insulation cover mounting structure, a sound insulation cover and an automobile which are compact in structure and good in noise reduction effect.

[0005] To achieve the above-mentioned purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The first aspect of the embodiments of the present application provides a sound insulation cover mounting structure, comprising:

[0007] An ignition coil;

[0008] An EGR pipe;

[0009] An oil level gauge;

[0010] An engine with a refueling cap, wherein the ignition coil, the EGR pipe and the oil level gauge are arranged on the engine;

[0011] An air filter assembly connected to the top of the engine;

[0012] A soundproof cover is located between the air filter assembly and the engine and avoids the ignition coil, the EGR pipe, the oil dipstick, the oil filler cap, and the connection between the engine and the air filter assembly.

[0013] In one embodiment, a portion of the soundproof cover is recessed towards a side close to the air filter assembly to form a first avoiding groove, and the ignition coil at least partially extends into the first avoiding groove.

[0014] In one embodiment, the soundproof cover comprises a heat dissipation channel in communication with the first avoiding groove, and one end of the heat dissipation channel extends to the air intake side of the engine.

[0015] In one embodiment, the heat dissipation channel is open towards a side close to the engine.

[0016] In one embodiment, the soundproof cover has a first avoiding hole, and the EGR pipe is arranged in the first avoiding hole.

[0017] In one embodiment, a portion of the soundproof cover is recessed towards a side close to the engine to form a second avoiding groove, the first avoiding hole is arranged on the bottom wall of the second avoiding groove, one end of the second avoiding groove extends to the outer side wall of the soundproof cover, and a portion of the EGR pipe is located in the second avoiding groove.

[0018] In one embodiment, the soundproof cover has an open groove extending through the soundproof cover from top to bottom, the open groove is in communication with the first avoiding hole and extends to the outer side wall of the soundproof cover.

[0019] In one embodiment, the soundproof cover has a second avoiding hole, and the oil dipstick is arranged in the second avoiding hole; and / or,

[0020] The soundproof cover has a third avoiding hole, and the oil filler cap at least partially extends into the third avoiding hole.

[0021] In one embodiment, a portion of the air filter assembly is protruded to form a connecting part, the soundproof cover has a fourth avoiding hole, and the connecting part is arranged in the fourth avoiding hole and connected with the top of the engine.

[0022] In one embodiment, the engine comprises a wire harness extending along the length direction of the engine and arranged close to the oil dipstick, and a portion of the wire harness close to the oil dipstick is located at the bottom of the soundproof cover.

[0023] In one embodiment, the soundproof cover is recessed towards the side close to the air filter assembly in the part area close to the oil level gauge to form a third avoiding groove, and the part area of the wire harness is located in the third avoiding groove.

[0024] The second aspect of the embodiment of the present application provides a soundproof cover, which is the soundproof cover of the soundproof cover mounting structure.

[0025] In one embodiment, the soundproof cover comprises a sound absorption module and a sound insulation module located outside the sound absorption module.

[0026] In one embodiment, the sound absorption module and the sound insulation module are bonded.

[0027] In one embodiment, the sound insulation module comprises a bitumen molecular substrate and sound absorption particles arranged in the bitumen molecular substrate; and / or,

[0028] The sound absorption module has a plurality of sound absorption holes which are interconnected and communicated with the outside.

[0029] In one embodiment, the part area of the sound absorption module is recessed towards the side away from the engine to form a plurality of sound absorption slits which are arranged at intervals, and the width dimension of the sound absorption slit gradually decreases in the direction away from the engine.

[0030] The third aspect of the embodiment of the present application provides an automobile comprising the soundproof cover mounting structure.

[0031] The embodiment of the present application provides a soundproof cover mounting structure, a soundproof cover and an automobile. By installing the soundproof cover between the air filter assembly and the engine, the propagation of noise can be reduced from the transmission path, the engine top noise is effectively reduced, the soundproof cover avoids the ignition coil, the EGR pipe, the oil level gauge, the oil filler cap and the connection between the engine and the air filter assembly, the overall structure of the soundproof cover mounting structure is compact, thereby meeting the installation requirements of the automobile cabin total height and having a good noise reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 FIG. 1 is a structural schematic diagram of a soundproof cover mounting structure according to an embodiment of the present application;

[0033] Figure 2 FIG. 2 is a structural schematic diagram of a soundproof cover according to an embodiment of the present application; Figure 1

[0034] FIG. 3 is a structural schematic diagram of a soundproof cover according to an embodiment of the present application; Figure 3 Figure 2 FIG. 4 is a structural schematic diagram of the bottom of a soundproof cover according to an embodiment of the present application;

[0035] Figure 4 ​Figure 6 is a schematic view of the cooperation between the ignition coil, the wire harness and the soundproof cover in another embodiment of the present application;

[0036] Figure 5 Figure 7 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application; Figure 1 Figure 8 is a partial enlarged view of A in Figure 7;

[0037] Figure 6 Figure 9 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application; Figure 5 Figure 10 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application; Figure 11 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application;

[0038] Figure 12 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application; Figure 7 Figure 13 is a partial enlarged view of B in Figure 12; Figure 6 Figure 14 is a partial enlarged view of C in Figure 12.

[0039] Figure 8 Figure 15 is a schematic view of the cooperation between the sound-absorbing module and the soundproof module in another embodiment of the present application;

[0040] Figure 9 Figure 16 is a partial enlarged view of A in Figure 15; Figure 8 Figure 17 is a partial enlarged view of B in Figure 15.

[0041] Legend of Reference Signs

[0042] Ignition coil 10; EGR pipe 20; Oil dipstick 30; Engine 40; Oil filler cap 41; Air filter assembly 50; Soundproof cover 60; First avoiding groove 60a; Heat dissipation channel 60b; First avoiding hole 60c; Second avoiding groove 60d; Open groove 60e; Second avoiding hole 60f; Third avoiding hole 60g; Fourth avoiding hole 60h; Third avoiding groove 60i; Hook avoiding groove 60j; Fifth avoiding hole 60k; Sound-absorbing module 61; Sound-absorbing slot 61a; Soundproof module 62; Wire harness 70; Lifting lug 80; Width dimension R. DETAILED DESCRIPTION

[0043] In the present application, the "top", "bottom", "length direction" orientation or positional relationship is based on the orientation or positional relationship shown in the figures, and the "inner", "outer" orientation or positional relationship is based on the orientation or positional relationship shown in the figures. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Figure 1 Figure 8 It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] An embodiment of the present application provides a soundproof cover mounting structure, please refer to Figure 1 and Figure 5, including an ignition coil 10, an EGR pipe 20 (Exhaust Gas Recirculation), an oil dipstick 30, an engine 40, an air cleaner assembly 50, and a soundproof cover 60. The engine 40 has a filler cap 41, the ignition coil 10, the EGR pipe 20, and the oil dipstick 30 are arranged on the engine 40, and the air cleaner assembly 50 is connected to the top of the engine 40. The soundproof cover 60 is located between the air cleaner assembly 50 and the engine 40, and avoids the ignition coil 10, the EGR pipe 20, the oil dipstick 30, the filler cap 41, and the connection between the engine 40 and the air cleaner assembly 50.

[0045] Another embodiment of the present application provides a soundproof cover 60, which is the soundproof cover 60 of the soundproof cover mounting structure described in the embodiments of the present application.

[0046] Still another embodiment of the present application provides an automobile, which comprises the soundproof cover mounting structure described in the embodiments of the present application.

[0047] In the related art, for the arrangement form of the top-mounted air cleaner assembly in the vehicle engine compartment, in the design of the vehicle intake system, the air cleaner assembly is arranged on the front and rear ends of the top of the engine, so that the intake port of the intercooler is close to the throttle valve, the intake distance is shortened, and thus the intake pressure loss is reduced. Moreover, the air cleaner assembly at a high position in the engine compartment is also beneficial to reducing the intake temperature, improving the performance of the engine, facilitating the drainage and installation of the intake system, and thus is widely applied in compact engine compartments. However, due to the limitation of the overall height of the vehicle engine compartment, the gap between the bottom of the air cleaner assembly and the top of the engine is small, the boundary environment is complex, and the overall noise reduction effect is poor.

[0048] However, the present application sets a soundproof cover 60 between the air cleaner assembly 50 and the engine 40, and improves the noise reduction effect by sound insulation of the soundproof cover 60. Moreover, the soundproof cover 60 can be adaptively arranged according to the arrangement of the components on the top and around the engine 40. The soundproof cover 60 will not limit the installation of the ignition coil 10, the EGR pipe 20, and the oil dipstick 30 on the engine 40, nor will it limit the connection between the engine 40 and the air cleaner assembly 50, and it can also facilitate the opening and closing of the filler cap 41. The overall structure of the soundproof cover mounting structure is compact, and thus it can not only meet the installation requirements of the overall height of the vehicle engine compartment, but also has a good noise reduction effect, thereby improving the NVH performance and sound quality of the engine 40, and solving the assembly problem of the soundproof cover 60 and the components around it in the narrow space under the top-mounted air cleaner installation boundary, and improving the assembly efficiency.

[0049] It should be noted that in addition to avoiding the above-mentioned components, the sound insulation cover 60 can also avoid other components located between the engine 40 and the air filter assembly 50. Moreover, the manner in which the sound insulation cover 60 avoids the above-mentioned components can be set according to actual needs, which can be that the sound insulation cover 60 is formed with structures for avoiding the above-mentioned components, or can be avoided by other means.

[0050] For example, referring to Figure 3 and Figure 4 , a part of the sound insulation cover is recessed towards the side close to the air filter assembly 50 to form a first avoiding groove 60a, and the ignition coil 10 at least partially extends into the first avoiding groove 60a. That is, the sound insulation cover 60 avoids the ignition coil 10 on the engine 40 through the first avoiding groove 60a formed by the recess, and the ignition coil 10 can be entirely structured to be located in the first avoiding groove 60a, or only part of the area can be located in the avoiding groove. Thus, interference between the sound insulation cover 60 and the ignition coil 10 can be avoided.

[0051] It can be understood that a plurality of first avoiding grooves 60a can also be provided on the sound insulation cover to avoid a plurality of ignition coils 10 on the engine 40.

[0052] For another example, referring to Figure 2 , the sound insulation cover has a first avoiding hole 60c, and the EGR pipe 20 is arranged to pass through the first avoiding hole 60c. The first avoiding hole 60c is a through hole, and the first avoiding hole 60c is provided on the sound insulation cover 60 to enable the EGR pipe 20 to easily pass through the sound insulation cover 60, which can facilitate the arrangement of the EGR pipe 20 on the engine 40.

[0053] For another example, referring to Figure 2 , the sound insulation cover has a second avoiding hole 60f, and the oil dipstick 30 is arranged to pass through the second avoiding hole 60f. The second avoiding hole 60f is a through hole, and the oil dipstick 30 can pass through the sound insulation cover 60 through the second avoiding hole 60f, which can avoid interference with the sound insulation cover 60, thereby being directly connected to the engine 40.

[0054] For another example, referring to Figure 2 , the sound insulation cover 60 has a third avoiding hole 60g, and the oil filler cap 41 at least partially extends into the third avoiding hole 60g. The third avoiding hole 60g is a through hole, and by providing the third avoiding hole 60g on the sound insulation cover 60, on the one hand, the oil filler cap 41 can be avoided to facilitate installation, and on the other hand, the oil filler cap 41 will not be blocked by the sound insulation cover 60, which can facilitate oiling.

[0055] The embodiment of the present application can reduce the propagation of noise from the transmission path by installing the sound insulation cover 60 between the air filter assembly 50 and the engine 40, effectively reducing the noise on the top of the engine 40, and the sound insulation cover 60 avoids the ignition coil 10, the EGR pipe 20, the oil level gauge 30, the oil filler cap 41, and the connection between the engine 40 and the air filter assembly 50. The overall structure of the sound insulation cover installation structure is compact, thereby meeting the installation requirements of the total height of the automobile engine compartment and having good noise reduction effect.

[0056] In an embodiment, referring to Figure 3 The sound insulation cover 60 includes a heat dissipation channel 60b in communication with the first avoidance slot 60a, and one end of the heat dissipation channel 60b extends to the air inlet side of the engine 40.

[0057] Specifically, the heat dissipation channel 60b is in communication with the first avoidance slot 60a, which can prevent the temperature of the top of the ignition coil 10 from rising due to the lack of heat dissipation space on the top of the engine 40 after the sound insulation cover 60 is installed. When the temperature of the top of the ignition coil 10 exceeds the allowable temperature, it can avoid a series of problems such as the increase of the wire resistance coefficient of the ignition coil 10, the decrease of the primary current and the secondary voltage transmitted to the spark plug, and the insufficient ignition energy of the spark plug. By extending one end of the heat dissipation channel 60b to the air inlet side of the engine 40, the heat of the ignition coil 10 can be transmitted to the air inlet side of the engine 40 through the heat dissipation channel 60b, which can effectively prevent high temperature from damaging the insulation material inside the ignition coil 10 and causing damage to the ignition coil 10 and misfire of the engine 40. Therefore, the heat generated by the ignition coil 10 during the driving of the automobile can be dissipated to the outside through the heat dissipation channel 60b, which can solve the problem of difficult heat dissipation of the ignition coil 10 and can be verified by the whole vehicle temperature field test.

[0058] It should be noted that the direction of the heat dissipation channel 60b can also be determined according to the specific structure of the sound insulation cover 60.

[0059] It can be understood that when a plurality of first avoidance slots 60a are provided on the sound insulation cover, a plurality of heat dissipation channels 60b corresponding to the first avoidance slots 60a can also be provided on the sound insulation cover 60.

[0060] In a specific embodiment, referring to Figure 3 One side of the heat dissipation channel 60b close to the engine 40 is open.

[0061] That is, the heat dissipation channel 60b is a heat dissipation slot with an opening towards the side of the engine 40, that is, the heat dissipation slot is an inverted structure, which has an opening at the bottom in addition to the heat dissipation slot at the end, thereby further enhancing the heat dissipation effect, and facilitating the installation of the ignition coil 10 and other components.

[0062] In an embodiment, referring toFigure 2 Part of the soundproof cover 60 is recessed towards the side close to the engine 40 to form a second avoiding groove 60d, the first avoiding hole 60c is arranged on the bottom wall of the second avoiding groove 60d, one end of the second avoiding groove 60d extends to the outer side wall of the soundproof cover 60, and part of the EGR pipe 20 is located in the second avoiding groove 60d.

[0063] Specifically, part of the EGR pipe 20 is arranged in the second avoiding groove 60d and extends along the second avoiding groove 60d, and passes through the soundproof cover 60 through the first avoiding hole 60c on the bottom wall of the second avoiding groove 60d. By arranging the second avoiding groove 60d, the height of the EGR pipe 20 relative to the soundproof cover 60 can be effectively reduced, the structure can be more compact, the size of the soundproof cover mounting structure can be reduced, and the EGR pipe 20 can also be limited to a certain extent.

[0064] It should be noted that all regions of the EGR pipe 20 in the partial pipe length range can be located in the second avoiding groove 60d, or part of the regions in the partial pipe length range can be located in the second avoiding groove 60d.

[0065] In an embodiment, referring to Figure 2 The soundproof cover 60 has an open groove 60e penetrating the soundproof cover 60 from top to bottom, the open groove 60e is in communication with the first avoiding hole 60c and extends to the outer side wall of the soundproof cover 60.

[0066] Specifically, the regions of the soundproof cover 60 on both sides of the open groove 60e are disconnected, the open groove 60e is in communication with the first avoiding hole 60c and the outer side wall of the soundproof cover 60 respectively, the aperture of the first avoiding hole 60c can have a certain elastic change, during the process of passing the EGR pipe 20 through the first avoiding hole 60c, the region of the soundproof cover 60 at the open groove 60e can be elastically deformed to a certain extent to increase the aperture of the first avoiding hole 60c, and the installation of the EGR pipe 20 can be facilitated.

[0067] It should be noted that the size of the open groove 60e can be determined according to the specific size of the soundproof cover 60, for example, the width of the open groove 60e is 4mm.

[0068] In a specific embodiment, after the EGR hose 20 and the wire harness 70 are assembled on the engine 40, the soundproof cover 60 is assembled in place after passing through the EGR hose 20 through the open groove 60e, thereby the assembly sequence of the soundproof cover mounting structure can be optimized.

[0069] In an embodiment, part of the air filter assembly is protruded to form a connecting part, the soundproof cover 60 has a fourth avoiding hole 60h, and the connecting part is arranged in the fourth avoiding hole 60h and connected with the top of the engine 40.

[0070] Specifically, the fourth avoiding hole 60h is a through hole, and the fourth avoiding hole 60h can reach the effect of avoiding the connection of the air filter assembly 50 and the top of the engine 40 through the avoiding connection part, so that the soundproof cover 60 can be conveniently installed between the air filter assembly 50 and the engine 40, and interference between the soundproof cover 60 and the air filter assembly 50 can be avoided.

[0071] It should be noted that the connection part can be a boss or other structure, and the connection part can be connected to the engine 40 by bolts or other fastening connection modes.

[0072] In an embodiment, the engine 40 includes a wire harness 70 extending along the length direction of the engine 40 and arranged close to the oil dipstick 30, and the area of the wire harness 70 close to the oil dipstick 30 is located at the bottom of the soundproof cover 60.

[0073] Specifically, referring to Figure 7 , the wire harness 70 is arranged between the cylinder head cover and the intake manifold of the engine 40 along the length direction of the engine 40, and the gap between the wire harness 70 and the oil dipstick 30 is small. By arranging the area of the wire harness 70 close to the oil dipstick 30 in the coverage range of the soundproof cover 60, when the oil level of the engine 40 is checked by plugging and unplugging the oil dipstick 30, the oil remaining on the oil dipstick 30 will only drip on the soundproof cover 60 due to the shielding of the soundproof cover 60, and will not drip on the wire harness 70, so that the conduction of the wire harness 70 can be avoided, and the abnormal operation of the engine 40 can be prevented.

[0074] In some embodiments, referring to Figure 3 , the part of the soundproof cover close to the oil dipstick 30 is recessed towards the side close to the air filter assembly 50 to form a third avoiding groove 60i, and the part of the wire harness 70 is located in the third avoiding groove 60i.

[0075] That is, the area of the wire harness 70 close to the oil dipstick 30 can be arranged in the third avoiding groove 60i, on the one hand, the third avoiding groove 60i can fix and limit the wire harness 70, so that the wire harness 70 can be prevented from moving or shifting, and on the other hand, the wire harness 70 can occupy as little internal space of the soundproof cover mounting structure as possible.

[0076] It should be noted that the entire area of the wire harness 70 in a part of the wire length range can be located in the third avoiding groove 60i, or part of the area of the wire harness 70 in a part of the wire length range can be located in the third avoiding groove 60i.

[0077] In a specific embodiment, referring to Figure 2 , the soundproof cover 60 further includes a fifth avoiding hole 60k, and the wire harness 70 is arranged in the fifth avoiding hole 60k, so that the wire harness 70 can pass through the fifth avoiding hole 60k into the inside of the soundproof cover 60.

[0078] In an embodiment, referring toFigure 2 and Figure 6 The engine 40 further comprises an ear 80, and a portion of the sound insulation cover 60 near the ear 80 is recessed to form a hook-avoiding groove 60j open toward the ear 80.

[0079] Specifically, the hook-avoiding groove 60j open toward the ear 80 means that the opening of the hook-avoiding groove 60j is toward the side of the ear 80, which can avoid the cooperation of the hook of the lifting machine and the ear 80 of the engine 40. By hooking the ear 80 on the engine 40 with the hook of the lifting machine, the engine 40 can be lifted. The hook-avoiding groove 60j is used to avoid the hook when lifting the engine 40, so that the hook does not press the sound insulation cover 60, which can facilitate the hooking of the hook on the ear 80 and avoid the damage of the sound insulation cover 60.

[0080] In an embodiment, referring to Figure 8 The sound insulation cover comprises a sound absorption module 61 and a sound insulation module 62 located outside the sound absorption module 61. By combining multiple materials, the sound insulation effect of the sound insulation cover 60 can be greatly improved.

[0081] Specifically, the sound insulation module 62 has a high-density characteristic material, which has excellent performance in isolating air sound and impact sound. The sound is greatly attenuated inside the sound insulation module 62, which has good broadband sound insulation performance and high damping performance, especially for the isolation of low-frequency noise, which is incomparable to other materials. At the same time, the sound insulation module 62 has high strength, which can improve the overall tear strength of the sound insulation cover 60. Moreover, the surface of the sound insulation module 62 is smooth and bright in color, which has good moisture-proof and flame-retardant properties, avoiding the problem of multiple pores on the surface of a single sound absorption module 61, and improving the overall appearance of the structure. By combining the sound absorption module 61 and the sound insulation module 62, a combined effect of sound absorption and sound insulation can be achieved on the propagation path of the noise at the top of the engine 40, greatly reducing the transmission of the noise radiated from the top of the engine 40 to the cabin, and greatly improving the noise reduction quality of the engine 40.

[0082] It should be noted that the overall thickness of the sound insulation cover 60 can be considered comprehensively according to the gap between the air filter assembly 50 and the engine 40 and the noise reduction effect to be achieved. For example, the thickness of the sound insulation cover 60 is 5±0.5mm, which can reduce the noise radiated from the top of the engine 40 by 4dB, and the subjective evaluation in the cabin is excellent.

[0083] In an embodiment, the sound absorption module 61 has a plurality of sound absorption holes that are in communication with each other and with the outside.

[0084] Specifically, the sound absorption module 61 has a plurality of sound absorption holes inside, the sound absorption holes have small hole diameters and are uniformly distributed, and the sound absorption holes are in communication with each other inside the material and penetrate each other, and the sound absorption holes are all open to the outside and in communication with the outside, so that sound waves are easy to enter the sound absorption holes and be absorbed by the material. Due to the presence of the sound absorption holes, the sound absorption module 61 has good sound absorption performance.

[0085] It should be noted that the material type of the sound absorption module 61 and the sound insulation module 62 can be determined according to actual needs.

[0086] For example, the sound absorption module 61 is injection molded by a slow-rebound open-cell polyurethane foam material. The slow-rebound material has excellent vibration resistance, damping, and sound insulation effects, and has a density of 200 kg / m 3 , a single sound absorption level greater than or equal to 2, a sound insulation performance greater than or equal to 20, and good flame retardant and aging resistance.

[0087] In one embodiment, the sound insulation module 62 includes an asphalt molecular base material and sound absorption particles arranged in the asphalt molecular base material.

[0088] The sound absorption particles are substances that can improve sound absorption effects, such as heavy mineral powder. The sound absorption module 61 and the sound insulation module 62 can be bonded or connected in other ways.

[0089] For example, the sound insulation module 62 is a sound insulation damping felt.

[0090] In one embodiment, referring to Figure 8 and Figure 9 , part of the sound absorption module 61 is recessed away from the engine 40 to form a plurality of sound absorption slots 61a arranged at intervals, and the width size R of the sound absorption slot 61a gradually decreases away from the engine 40.

[0091] Specifically, the sound absorption module 61 has a plurality of sound absorption slots 61a on the side close to the engine 40, that is, a concave-convex shape like a slit wedge, and by arranging a plurality of sound absorption slots 61a with varying width sizes R, the sound absorption frequency characteristics of the sound insulation cover 60 can be better adjusted, thereby improving the average sound absorption coefficient of the sound insulation cover 60, and the sound insulation cover 60 has better sound insulation and sound absorption performance.

[0092] In the description of the application, the description of the terms "in an embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" and the like means that the specific feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearance of the above-mentioned terms in various places in the specification is not necessarily intended to refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the different embodiments or examples described in the application and the features of the different embodiments or examples can be combined with each other, if not mutually exclusive.

[0093] The above only describes the preferred embodiments of the application and is not intended to limit the application. The application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application is included in the protection scope of the application.

Claims

1. A soundproof enclosure mounting structure, characterized in that, include: Ignition coil; EGR tube; Engine oil dipstick; An engine with a filler cap, wherein the ignition coil, the EGR pipe and the oil dipstick are mounted on the engine; An air filter assembly connected to the top of the engine; A soundproof cover is located between the air filter assembly and the engine, and avoids the ignition coil, the EGR pipe, the oil dipstick, the filler cap, and the connection between the engine and the air filter assembly. The soundproof cover has a first clearance hole, and the EGR pipe passes through the first clearance hole; A portion of the soundproof cover is recessed toward the side closer to the engine to form a second clearance groove. The first clearance hole is provided on the bottom wall of the second clearance groove. One end of the second clearance groove extends to the outer wall of the soundproof cover. A portion of the EGR pipe is located in the second clearance groove and extends along the second clearance groove. The soundproof enclosure has an opening slot that runs through the enclosure from top to bottom, the opening slot communicating with the first clearance hole and extending to the outer side wall of the soundproof enclosure; A portion of the soundproof cover is recessed toward the side closer to the air filter assembly to form a first clearance groove, and at least a portion of the ignition coil extends into the first clearance groove; the soundproof cover includes a heat dissipation channel communicating with the first clearance groove, one end of the heat dissipation channel extending to the air intake side of the engine; The engine includes a wiring harness extending along the length of the engine and positioned near the oil dipstick, with at least the area of ​​the wiring harness near the oil dipstick located at the bottom of the soundproof enclosure; The soundproof cover includes a sound-absorbing module and a sound-insulating module located outside the sound-absorbing module. The sound-insulating module includes an asphalt molecular substrate and sound-absorbing particles disposed in the asphalt molecular substrate. The sound-absorbing module is injection molded from an open-cell slow-rebound polyurethane foam material.

2. The soundproof enclosure installation structure according to claim 1, characterized in that, The heat dissipation channel is open on the side closest to the engine.

3. The soundproof enclosure installation structure according to claim 1 or 2, characterized in that, The soundproof enclosure has a second clearance hole, and the oil dipstick passes through the second clearance hole; and / or, The soundproof cover has a third clearance hole, and at least a portion of the refueling cap extends into the third clearance hole.

4. The soundproof enclosure installation structure according to claim 1 or 2, characterized in that, A portion of the air filter assembly protrudes to form a connection, the soundproof cover has a fourth clearance hole, the connection passes through the fourth clearance hole and is connected to the top of the engine.

5. The soundproof enclosure installation structure according to claim 3, characterized in that, The soundproof cover is recessed in a portion of the area near the oil dipstick toward the side near the air filter assembly to form a third clearance groove, and a portion of the wiring harness is located in the third clearance groove.

6. A soundproof cover, characterized in that, The soundproof enclosure is the soundproof enclosure installation structure according to any one of claims 1-5.

7. The soundproof cover according to claim 6, characterized in that, The sound-absorbing module and the sound-insulating module are bonded together.

8. The soundproof cover according to claim 6, characterized in that, The sound-absorbing module has multiple interconnected sound-absorbing holes that are also open to the outside world.

9. The soundproof cover according to claim 6, characterized in that, A portion of the sound-absorbing module is recessed toward the side away from the engine to form multiple spaced sound-absorbing slits, the width of which gradually decreases toward the direction away from the engine.

10. A car, characterized in that, Includes the soundproof enclosure mounting structure as described in claim 1.

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