CN216518318U - Engine cover, engine and engineering equipment - Google Patents

Abstract

The utility model provides an engine cover, an engine and engineering equipment, wherein the engine cover is used for the engine and comprises a cover body and a silencer, the silencer is integrated on the cover body, and an air inlet and an air outlet are formed in the silencer. The engine cover integrates the silencer on the cover body, so that the silencer is directly integrated on the engine cover body in the process of producing the engine cover body, and in the process of assembling engineering equipment in the later period, only the engine cover body is required to be covered on the engine, and then the air outlet of the silencer is communicated with the air inlet of the air compressor, so that the air inlet noise of the air compressor can be effectively improved, and meanwhile, the silencer is not required to be additionally and separately configured in the later period.

Description

Engine cover, engine and engineering equipment

Technical Field

The application belongs to the technical field of engines, and particularly relates to an engine hood, an engine and engineering equipment.

Background

Along with the younger and more high requirement for comfort in the cab of the customer, the NVH (Noise, Vibration and Harshness) of the whole automobile of the commercial vehicle is more and more strict, the NVH index of the whole engine is improved along with the requirement, and the control of the Noise of the air compressor is directly related to the Noise of the whole engine product. Therefore, the noise problem of the air compressor has become an important index for measuring the comprehensive performance of the air compressor. Wherein, the noise at the air inlet of the air compressor is the main aerodynamic noise. At present, most of schemes are that a silencer is additionally installed at an air inlet of an air compressor, however, the silencer is generally required to be provided with specific supports and other structures in the mode, the structure of the silencer is complex, the space for assembling an engine is limited, the assembly of the whole vehicle is not facilitated, in addition, the silencer is required to be additionally assembled in the assembly process, a process is increased, and the assembly efficiency is influenced.

Therefore, in order to effectively improve the air inlet noise of the air compressor and simultaneously remove the trouble of whole machine arrangement and optimize the assembly process, the design of the engine cover capable of reasonably assembling the silencer becomes the problem to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving or improving at least one of the above technical problems.

A first aspect of the present invention is to provide an engine cover.

A second aspect of the present invention is to provide an engine.

A third aspect of the present invention is to provide an engineering apparatus.

The technical scheme of the first aspect of the utility model provides an engine cover, which is used for an engine and comprises a cover body; the silencer is integrated on the cover body, and an air inlet and an air outlet are formed in the silencer.

According to the engine cover provided by the utility model, the engine cover is used for an engine and comprises a cover body and a silencer, the silencer is integrated on the cover body, the silencer is provided with an air inlet and an air outlet, the air inlet is communicated with the atmosphere, and the air outlet is communicated with the air inlet of the air compressor, so that the noise at the air inlet of the air compressor can be eliminated through the silencer. The silencer is integrated on the cover body of the engine cover, and the silencer is attached to one part of the engine cover body or embedded on the engine cover body, so that the silencer is directly integrated on the engine cover body in the process of producing the engine cover body, and in the process of assembling engineering equipment in the later stage, the air inlet noise of the air compressor can be effectively improved by only covering the engine cover body on the engine and then communicating an air outlet of the silencer with an air inlet of the air compressor, and meanwhile, the silencer does not need to be additionally and independently configured for the air compressor in the later stage. Further, because the muffler of this application is integrated on the lid, compare in additionally setting up the muffler like this, need not to consider the position of muffler in the in-process of assembly, also need not to set up bearing structure in addition for the muffler, solved the problem that air compressor muffler arranged the difficulty.

In the above technical scheme, the muffler is a cavity muffler integrated on the cover body, the cavity muffler includes a muffling cavity, and the muffling cavity is provided with an air inlet and an air outlet.

In this technical scheme, the muffler is the integrated cavate muffler on the lid, for example take the muffler in expansion chamber, or other take the muffler in amortization chamber, and the cavate muffler compares in other muffling wares, and preparation technology is simpler, and the cavate muffler includes the amortization chamber, is provided with air inlet and gas outlet on the amortization chamber.

In the above technical solution, the chamber type muffler is a blow molding expansion chamber type muffler integrated on the cover body.

In the technical scheme, the cavity type silencer is a blow molding expansion cavity type silencer integrated on the cover body, particularly, the expansion cavity type silencer can be prepared through blow molding, the preparation process is simpler through a blow molding mode, and the assembly efficiency of the silencer is greatly improved.

In the technical scheme, the engine cover further comprises a silencing cavity shell, the silencing cavity shell and the cover body are integrally formed, and a silencing cavity is defined between the silencing cavity shell and the cover body; the silencing cavity shell is also provided with an air inlet communicated with the silencing cavity and an air outlet communicated with the silencing cavity.

In the technical scheme, the engine cover further comprises a silencing cavity shell, the silencing cavity shell and the cover body are integrally formed, and a silencing cavity is defined between the silencing cavity shell and the cover body; can understand for the amortization chamber is the cavity that lid itself encloses, along with the lid is common through the mode integrated into one piece of founding, also prepared the amortization chamber when generating the lid like this, when having improved air compressor noise of admitting air like this, the later stage also need not additionally to dispose the silencer, great simplification the assembly process, improved assembly efficiency, also solved simultaneously additionally and disposed the silencer, lead to the problem of silencer overall arrangement difficulty. Further, the silencing cavity shell is also provided with an air inlet communicated with the silencing cavity and an air outlet communicated with the silencing cavity.

In the technical scheme, the silencing cavity comprises a first silencing cavity and a second silencing cavity, the first silencing cavity is communicated with the air inlet, the second silencing cavity is communicated with the air outlet, and the air flowing direction of the first silencing cavity is perpendicular to the air flowing direction of the second silencing cavity.

In the technical scheme, the silencing cavity comprises a first silencing cavity and a second silencing cavity, the first silencing cavity is communicated with the air inlet, and the second silencing cavity is communicated with the air outlet; furthermore, the gas flow direction of the first silencing cavity is perpendicular to the gas flow direction of the second silencing cavity, so that the section of the cavity pipeline is suddenly changed to cause acoustic impedance change, a part of sound waves transmitted along the pipeline are reflected back to a sound source, phase difference is generated between the sound waves transmitted forwards and the reflected waves on different sections, and mutual interference is realized, the aim of silencing is achieved, and additional silencing materials do not need to be arranged in the silencing cavities. Furthermore, the sum of the cavity volumes of the first silencing cavity and the second silencing cavity is 1.5L, so that the phenomenon that the cavity volume is too large, not only is the space occupied, but also materials are wasted, and the phenomenon that the cavity volume is too small and the silencing is insufficient can be avoided; of course, more abrupt cross sections can be arranged in the sound attenuation cavity along the sound wave propagation direction according to the requirement, so that the reflection of the sound wave can be fully ensured, and the optimal sound attenuation effect is achieved.

In the technical scheme, the sound absorption material is arranged in the sound absorption cavity.

In the technical scheme, the sound absorbing material is arranged in the silencing cavity, and the purpose of silencing is realized by arranging the sound absorbing material in the silencing cavity, so that the structure of the complicated silencing cavity is not required to be designed, and the sound waves are not required to be reflected, so that the structure of the silencing cavity is greatly simplified, and the preparation efficiency of the silencing cavity is improved. Further, the sound-absorbing material is sound-absorbing cotton or a sound-absorbing plate.

In the above technical solution, the muffler is detachably mounted on the cover body.

In this technical scheme, the muffler can be installed on the lid with dismantling, can dismantle and change the muffler according to the demand fast like this.

In the above technical scheme, the muffler and the cover body are of an integrated structure.

In this technical scheme, muffler and lid formula structure as an organic whole, can guarantee the joint strength of muffler and lid like this.

In above-mentioned technical scheme, the lid upper surface is provided with the holding tank, and the muffler can be installed in the holding tank with dismantling, or the muffler welds in the holding tank.

In this technical scheme, the lid upper surface is provided with the holding tank, and the muffler can be installed in the holding tank with dismantling, so not only can guarantee the efficiency of the installation and the dismantlement of muffler, can also guarantee the compact of equipment as far as. Of course, the silencer can also be welded in the receiving groove.

In the above technical scheme, the top of the silencer is lower than or level to the top of the cover body, or the top of the silencer protrudes from the top of the cover body, and the height of the top of the silencer protruding from the cover body is less than or equal to 36 mm.

In this technical scheme, the top of muffler is less than or the parallel and level in the top of lid, and after the muffler was installed in the holding tank promptly, the upper surface of muffler was less than or the parallel and level in the upper surface of lid, has just so avoided the difficult problem of muffler overall arrangement completely, has solved the problem that the space that the muffler occupy leads to the assembly difficulty greatly simultaneously. Certainly, the top of muffler also can bulge in the top of lid as required, and the top of muffler bulges in the high less than or equal to 36mm of lid, and further, the height less than or equal to 26mm of bulge in the lid, can avoid the outstanding high too high of muffler like this, leads to the problem of overall arrangement difficulty.

An aspect of the second aspect of the present invention provides an engine, including: the engine cover of any one of the aspects of the first aspect of the present application.

The present application provides an engine comprising the hood of any one of the first aspects of the present application. Since the engine provided by the present application includes the engine cover according to any one of the first aspect of the present application, the engine provided by the present application has all the advantages of the engine cover provided by any one of the technical solutions of the first aspect of the present application.

A technical solution of a third aspect of the present invention provides an engineering apparatus, including: an engine according to any one of the second aspect of the present application.

The engineering equipment provided by the application comprises the engine of the technical scheme of the second aspect of the application. Since the engineering equipment provided by the application comprises the engine according to any one of the second aspect of the application, the engineering equipment provided by the application has all the advantages of the engine provided by any one of the second aspect of the application. Further, the engineering equipment may include heavy trucks, trailers, excavators, driving and anchoring machines, bulldozers, road rollers, concrete pump trucks and other operation vehicles, or tower cranes, construction elevators, material hoists and other mechanical operation equipment.

Additional aspects and advantages in accordance with the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of embodiments according to the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates a schematic structural view of an engine hood provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a silencer according to an embodiment of the present invention.

The correspondence between the part names and the reference numbers in fig. 1 and 2 is as follows:

1 engine hood, 11 cover, 12 silencer, 121 silencing cavity, 1211 first silencing cavity, 1212 second silencing cavity, 122 air inlet, 123 air outlet, 2 air compressor, 3 air filter.

Detailed Description

In order that the above aspects, features and advantages of the embodiments according to the present invention can be more clearly understood, embodiments according to the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the utility model, however, embodiments according to the utility model may be practiced in other ways than those described herein, and therefore the scope of protection of embodiments according to the utility model is not limited by the specific embodiments disclosed below.

Example one

As shown in fig. 1 and 2, an embodiment of a first aspect of the present invention provides an engine cover 1, the engine cover 1 being used for an engine, the engine cover 1 including a cover 11 and a muffler 12; muffler 12 is integrated with cover 11, and muffler 12 is provided with air inlet 122 and air outlet 123.

According to the engine cover 1 provided in the present embodiment, the engine cover 1 is used for an engine, the engine cover 1 includes a cover 11 and a muffler 12, the muffler 12 is integrated on the cover 11, the muffler 12 is provided with an air inlet 122 and an air outlet 123, the air inlet 122 is communicated with the atmosphere, and the air outlet 123 is communicated with the air inlet 122 of the air compressor 2, so that the noise of the air inlet 122 of the air compressor 2 can be eliminated by the muffler 12. The engine cover 1 of the present invention integrates the muffler 12 on the cover 11, and it can be understood that the muffler 12 is attached to a part of the engine cover 11, or the muffler 12 is fitted to the engine cover 11, so that, in the process of producing the engine cover 11, the muffler 12 is directly integrated to the engine cover 11, therefore, in the process of assembling engineering equipment at the later stage, only the engine cover body 11 is required to be covered on the engine, the air outlet 123 of the muffler 12 is then communicated with the air inlet 122 of the air compressor 2, can effectively improve the air inlet noise of the air compressor 2, does not need to additionally and separately arrange a silencer at the later stage, compared with the prior art, the later stage additionally sets up the silencer, and the engine shroud 1 later stage that this application provided need not additionally to assemble the silencer, has just so simplified the assembly process, has improved assembly efficiency. Further, because the silencer 12 of the present application is integrated on the cover body 11, compared with additionally arranging the silencer, the position of the silencer does not need to be considered in the assembling process, and a supporting structure does not need to be additionally arranged for the silencer, so that the problem that the silencer of the air compressor 2 is difficult to arrange is solved.

In the above embodiment, muffler 12 is a chamber muffler 12 integrated on cover 11, and chamber muffler 12 includes a muffler chamber 121, and muffler chamber 121 is provided with air inlet 122 and air outlet 123.

In this embodiment, muffler 12 is a chamber muffler 12 integrated on cover 11, and chamber muffler 12 is simpler in manufacturing process than other mufflers 12, and chamber muffler 12 includes a muffling chamber 121, and muffling chamber 121 is provided with an air inlet 122 and an air outlet 123.

In the above embodiment, the chamber muffler 12 is the blow-molded expansion chamber muffler 12 integrated on the cover 11.

In this embodiment, the chamber type muffler 12 is a blow molding expansion chamber type muffler 12 integrated on the cover body 11, specifically, the expansion chamber type muffler 12 can be prepared by blow molding, and the preparation process is simpler by a blow molding manner, so that the assembly efficiency of the muffler 12 is greatly improved.

In the above embodiment, the engine cover 1 further includes a silencing cavity 121, the silencing cavity 121 is integrally formed with the cover 11, and the silencing cavity 121 is enclosed by the silencing cavity 121 and the cover 11; the shell of the silencing cavity 121 is further provided with an air inlet 122 communicated with the silencing cavity 121 and an air outlet 123 communicated with the silencing cavity 121.

In this embodiment, the engine cover 1 further includes a silencing cavity 121, the silencing cavity 121 is integrally formed with the cover 11, and the silencing cavity 121 and the cover 11 enclose a silencing cavity 121; can understand that amortization chamber 121 is the cavity that lid 11 itself encloses, along with lid 11 jointly through the mode integrated into one piece of founding, also prepared amortization chamber 121 when generating lid 11, when having improved air compressor 2 noise of admitting air like this, the later stage also need not additionally to dispose the silencer, great simplification the assembly process, improved assembly efficiency, also solved additionally simultaneously and disposed the silencer, lead to the difficult problem of silencer overall arrangement. Further, a gas inlet 122 communicated with the sound deadening chamber 121 and a gas outlet 123 communicated with the sound deadening chamber 121 are further provided on the casing of the sound deadening chamber 121.

In the above embodiment, the sound deadening chamber 121 includes the first sound deadening chamber 1211 and the second sound deadening chamber 1212, the first sound deadening chamber 1211 communicates with the gas inlet 122, the second sound deadening chamber 1212 communicates with the gas outlet 123, and the gas flow direction of the first sound deadening chamber 1211 is perpendicular to the gas flow direction of the second sound deadening chamber 1212.

In this embodiment, the sound deadening chamber 121 includes a first sound deadening chamber 1211 and a second sound deadening chamber 1212, the first sound deadening chamber 1211 communicating with the gas inlet 122, and the second sound deadening chamber 1212 communicating with the gas outlet 123; further, the gas flowing direction of the first muffling chamber 1211 is perpendicular to the gas flowing direction of the second muffling chamber 1212, so that the abrupt change of the cross section of the chamber pipe can be utilized to cause the acoustic impedance change, so that a part of the sound wave propagating along the pipe is reflected back to the sound source, and a phase difference is generated between the sound wave propagating forward and the reflected wave on different cross sections and the sound wave interferes with each other, thereby achieving the muffling purpose, and thus, no additional muffling material is required to be arranged in the muffling chamber 121. Furthermore, the sum of the cavity volumes of the first silencing cavity 1211 and the second silencing cavity 1212 is 1.5L, so that the phenomenon that the cavity volume is too large, not only the occupied space is wasted, but also the material is wasted, and the phenomenon that the cavity volume is too small and the silencing is insufficient can be avoided; of course, more abrupt cross sections can be arranged in the sound attenuation cavity 121 along the sound wave propagation direction according to the requirement, so that the reflection of the sound wave can be fully ensured, and the optimal sound attenuation effect can be achieved.

In the above embodiment, the sound absorbing material is provided inside the sound deadening chamber 121.

In this embodiment, the sound absorbing material is disposed in the silencing cavity 121, and the purpose of silencing is achieved by disposing the sound absorbing material in the silencing cavity 121, so that the structure of the silencing cavity 121 does not need to be designed in a complicated manner, that is, the sound waves do not need to be reflected, the structure of the silencing cavity 121 is greatly simplified, and the preparation efficiency of the silencing cavity 121 is improved. Further, the sound-absorbing material is sound-absorbing cotton or a sound-absorbing plate.

In the above embodiment, the muffler 12 is detachably mounted on the cover 11.

In this embodiment, the muffler 12 is detachably mounted on the cover 11, so that the muffler 12 can be quickly removed and replaced as needed. Further, the muffler 12 and the cover 11 are integrated. This ensures the strength of connection of the muffler 12 to the cover 11.

In the above embodiment, the upper surface of the cover 11 is provided with the receiving groove, and the muffler 12 is detachably mounted in the receiving groove, or the muffler 12 is welded in the receiving groove.

In this embodiment, the upper surface of the cover 11 is provided with a receiving groove, and the muffler 12 can be detachably mounted in the receiving groove, so that not only the efficiency of mounting and dismounting the muffler 12 can be ensured, but also the compactness of the device can be ensured as much as possible. Of course, the silencer 12 can also be welded in the receiving groove.

In the above embodiment, the top of the muffler 12 is lower than or flush with the top of the cover 11, or the top of the muffler 12 protrudes from the top of the cover 11, and the height of the top of the muffler 12 protruding from the cover 11 is not more than 26 mm.

In this embodiment, the top of muffler 12 is lower than or flush with the top of cover 11, that is, after muffler 12 is installed in the accommodation groove, the upper surface of muffler 12 is lower than or flush with the upper surface of cover 11, so that the problem of difficult layout of muffler 12 can be completely avoided, and the problem of difficult assembly caused by the large space occupied by muffler 12 is solved. Of course, the top of the muffler 12 may protrude from the top of the cover 11 as needed, and the height of the top of the muffler 12 protruding from the cover 11 is less than or equal to 26mm, so that the problem of difficult layout due to too high protruding height of the muffler 12 can be avoided.

An embodiment of a second aspect of the utility model provides an engine comprising: an engine cover 1 as in any one of the first aspect of the present application.

The present embodiment provides an engine including the engine cover 1 according to the first aspect of the present application. Since the engine provided by the embodiment includes the engine cover 1 according to the embodiment of the first aspect of the present application, the engine provided by the present application has all the advantages of the engine cover 1 provided by any one of the technical solutions of the first aspect of the present application.

An embodiment of a third aspect of the present invention provides an engineering apparatus, including: an engine as in any one of the second aspects of the present application.

The engineering equipment provided by the embodiment comprises the engine provided by the embodiment of the second aspect of the present application, and the engineering equipment provided by the present application comprises the engine according to any one of the technical solutions of the second aspect of the present application, so that the engineering equipment provided by the present application has all the beneficial effects of the engine provided by any one of the technical solutions of the second aspect of the present application.

The engineering equipment of the present application is described in further detail below;

as shown in fig. 1 and 2, the engineering equipment includes an engine cover 1, an air cleaner 3 and an air compressor 2, an air inlet 122 of a silencer 12 on the engine cover 1 is communicated with the air cleaner 3 through a pipeline, an air outlet 123 of the silencer 12 is communicated with the air inlet 122 of the air compressor 2 through a pipeline, so that in the working process of the air compressor 2, the air inlet 122 of the air compressor 2 can be silenced through the silencer 12, and the problem of high noise of the air inlet 122 of the air compressor 2 is solved.

In embodiments according to the utility model, the terms "first", "second", "third" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art according to specific situations.

Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the utility model. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

The above is only a preferred embodiment according to the present invention, and is not intended to limit the embodiment according to the present invention, and various modifications and variations may be made to the embodiment according to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiment according to the present invention should be included in the protection scope of the embodiment according to the present invention.

Claims (10)

1. An engine cover for an engine, the engine cover comprising:

a cover body;

the silencer is integrated on the cover body, and an air inlet and an air outlet are formed in the silencer.

2. The engine cover according to claim 1,

the silencer is integrated the cavate silencer on the cover body, the cavate silencer includes a silencing cavity, the silencing cavity is provided with the air inlet and the air outlet.

3. The engine cover of claim 2, further comprising:

the silencing cavity shell and the cover body are integrally formed, and the silencing cavity is enclosed between the silencing cavity shell and the cover body;

the silencing cavity shell is also provided with an air inlet communicated with the silencing cavity and an air outlet communicated with the silencing cavity.

4. The engine cover according to claim 2,

the silencing cavity comprises a first silencing cavity and a second silencing cavity, the first silencing cavity is communicated with the air inlet, the second silencing cavity is communicated with the air outlet, and the air flowing direction of the first silencing cavity is perpendicular to that of the second silencing cavity.

5. The engine cover according to claim 2,

and sound absorption materials are arranged in the silencing cavities.

6. The engine cover according to claim 1,

the silencer can be detachably mounted on the cover body, or the silencer and the cover body are of an integrated structure.

7. The engine cover of claim 1,

the lid upper surface is provided with the holding tank, the muffler can be installed with dismantling in the holding tank, or the muffler welding is in the holding tank.

8. The engine cover according to claim 7,

the top of the silencer is lower than or flush with the top of the cover body, or the top of the silencer protrudes out of the top of the cover body, and the height of the top of the silencer protruding out of the cover body is less than or equal to 36 mm.

9. An engine, comprising:

the engine cover of any one of claims 1 to 8.

10. An engineering apparatus, comprising:

the engine of claim 9.

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