CN109578183B - Engine air inlet pipe and engine air inlet system - Google Patents
Engine air inlet pipe and engine air inlet system Download PDFInfo
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- CN109578183B CN109578183B CN201710901611.7A CN201710901611A CN109578183B CN 109578183 B CN109578183 B CN 109578183B CN 201710901611 A CN201710901611 A CN 201710901611A CN 109578183 B CN109578183 B CN 109578183B
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- 230000030279 gene silencing Effects 0.000 claims abstract description 35
- 230000008030 elimination Effects 0.000 claims abstract description 13
- 238000003379 elimination reaction Methods 0.000 claims abstract description 13
- 230000003584 silencer Effects 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 6
- 230000002829 reductive effect Effects 0.000 abstract description 12
- 230000003313 weakening effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention provides an engine air inlet pipe and an engine air inlet system, which comprise: the silencer comprises an air inlet, an air outlet, an air inlet pipe main body and a silencing part; the intake pipe main part includes: a first chamber, a second chamber, a third chamber; the air outlet is connected with the first chamber, the second chamber, the third outlet and the air inlet in sequence; the inlet of the second chamber and the outlet of the second chamber are arranged in the same direction; the noise elimination portion is arranged inside the air inlet pipe main body, the first cavity and the third cavity are communicated through the noise elimination portion and the air inlet pipe main body are integrated into a whole, the air inlet pipe main body can be used for fulfilling the aim of weakening noise entering the air inlet pipe main body in cooperation with the noise elimination portion outside the normal air inlet function, the space of the air inlet system occupying the engine room is greatly reduced, and the weight of the air inlet system is reduced.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to an engine air inlet pipe and an engine air inlet system.
Background
The engine air inlet pipe is an important component of an engine air inlet system, the engine air inlet pipe plays a role in providing clean air for the engine, and meanwhile, noise emitted by the engine can be transmitted out through the engine air inlet pipe.
At present, in an engine compartment, an air inlet pipe of an engine air inlet system is an independent component, if noise emitted by an engine needs to be eliminated, a plurality of silencer units with large volume need to be connected to the outer sides of the air inlet pipe and the engine respectively, the air inlet pipe or the engine transmits the noise to the independent silencer units, and the silencer units are provided to eliminate and discharge the noise.
However, the bulky muffler unit disposed outside the intake pipe occupies a large portion of the engine compartment, and the cost and the total weight of the engine intake system increase due to the separate muffler unit.
Disclosure of Invention
In view of this, the present invention is directed to an engine intake duct and an engine intake system, so as to solve the problems in the prior art that a large-volume muffler unit disposed outside the intake duct occupies most of the space of an engine compartment, and the manufacturing of an independent muffler unit increases the cost and the total weight of the engine intake system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an engine intake, comprising:
the silencer comprises an air inlet, an air outlet, an air inlet pipe main body and a silencing part;
the intake pipe main body includes: a first chamber, a second chamber, a third chamber;
the air outlet is connected with a first inlet of the first chamber, a first outlet of the first chamber is connected with a second inlet of the second chamber, a second outlet of the second chamber is connected with a third inlet of the third chamber, and a third outlet of the third chamber is connected with the air inlet;
the second inlet of the second chamber and the second outlet of the second chamber are arranged in the same direction;
the silencing portion is arranged inside the air inlet pipe main body and communicated with the first chamber and the third chamber.
Further, the muffler portion includes: at least one muffling tube and at least one first muffling chamber,
one end of the silencing pipe is connected with the first cavity, and the other end of the silencing pipe is connected with the second cavity;
and a fourth inlet of the first silencing cavity is connected with the first chamber, and a fourth outlet of the first silencing cavity is connected with the third chamber.
Furthermore, the adjacent first silencing cavities are communicated through a connecting pipe.
Further, the muffler portion includes: a second muffling chamber and at least one baffle;
the at least one partition plate is arranged in the second silencing cavity and used for dividing the second silencing cavity into a plurality of second sub-silencing cavities;
and a plurality of silencing holes are correspondingly arranged on the wall of the second sub-silencing cavity.
Further, the diameters and porosities of the silencing holes arranged in the different second sub-silencing cavities are different;
the different second sub-chambers have different volumes.
Furthermore, a bent structure perpendicular to the first chamber is arranged at the first inlet of the first chamber, and the air outlet is connected with the bent structure.
Further, the engine intake duct further includes:
a first bracket and a second bracket,
the first support and the second support are symmetrically arranged on the air inlet pipe main body respectively and used for fixing the engine air inlet pipe.
An engine air intake system, comprising: the air filter, the air compressor, the intercooler and the engine air inlet pipe;
the engine air inlet pipe is connected with the air filter, the air filter is connected with the air compressor, the air compressor is respectively connected with the intercooler and the engine, and the intercooler is connected with the engine.
Compared with the prior art, the air inlet pipe and the air inlet system of the engine have the following advantages:
the embodiment of the invention provides an engine air inlet pipe and an engine air inlet system, which comprise: the gear shifting rocker arm, the first gear selecting rocker arm, the second gear selecting rocker arm, the first stroke part and the second stroke part are arranged, the first stroke part is arranged between the gear shifting rocker arm and the first gear selecting rocker arm, the second stroke part is arranged between the first gear selecting rocker arm and the second gear selecting rocker arm, the basic requirements that gear shifting operation and gear selecting operation are independent and do not interfere with each other are met, and the mechanism has the advantages that the number of integral parts is small, the size chain tolerance is small, the movement stroke and the angle tolerance of the gear selecting and shifting mechanism are reduced, and the mechanism moves more accurately.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an intake manifold of an engine according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view A-A of an intake manifold of the engine of FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view B-B of an intake manifold of the engine of FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of noise transmission through an intake manifold of an engine according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a muffler portion according to an embodiment of the present invention;
FIG. 6 is a schematic top view of an engine air intake duct according to an embodiment of the present invention;
FIG. 7 is a schematic exterior view of an intake manifold for an engine according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of an alternate engine air intake according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view C-C of the intake manifold of the alternative engine of FIG. 8 according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of noise delivery in an intake manifold of an engine according to an alternate embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of another sound-deadening portion according to the embodiment of the present invention;
fig. 12 is an external view schematically showing another engine intake pipe according to the embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, it shows a schematic structural diagram of an engine intake pipe provided by an embodiment of the present invention, and the engine intake pipe includes:
a main body 10 of the intake duct, an intake port 20, an outlet port 30, and a muffling portion 40.
In the field of automobile manufacturing, Noise, Vibration and Harshness (NVH) is a comprehensive index for measuring automobile manufacturing quality, and users have increasingly strict requirements on the NVH of the whole automobile, wherein the NVH of an engine refers to: the noise and vibration that engine self sent in work, or the noise and vibration that engine and peripheral complex part such as fender produced resonance and sent when operating condition, wherein, the noise that produces can pass through the reverse outside of the car of discharging of intake pipe, causes whole car NVH level relatively poor.
Therefore, in the embodiment of the present invention, in order to raise the NVH level of the engine and the whole vehicle, the muffling portion 40 is integrated with the intake pipe main body 10, so that the intake pipe main body 10 can cooperate with the muffling portion 40 to achieve the purpose of attenuating noise entering the intake pipe main body 10 in addition to performing a normal intake function.
Specifically, referring to fig. 2, which shows a schematic sectional view a-a of the intake pipe of the engine provided in fig. 1 according to the embodiment of the present invention, the intake pipe main body 10 includes: a first chamber 101, a second chamber 102, a third chamber 103; the air outlet 30 is connected with a first inlet of the first chamber 101, a first outlet of the first chamber 101 is connected with a second inlet of the second chamber 102, a second outlet of the second chamber 102 is connected with a third inlet of the third chamber 103, and a third outlet of the third chamber 103 is connected with the air inlet 20; the second inlet of the second chamber 102 is arranged in the same direction as the second outlet of the second chamber 102; the sound deadening portion 40 is provided inside the intake pipe main body 10, and the sound deadening portion 40 communicates the first chamber 101 with the third chamber 103.
It should be noted that, referring to fig. 3, which shows a schematic B-B cross-sectional view of the engine intake pipe provided in fig. 1 in an embodiment of the present invention, the shape of the second chamber 102 is a currently common U-shaped structure, such as a U-shaped pipe, and the second inlet 1021 and the second outlet 1022 have the same direction, and function to change the direction of noise transmission by 180 degrees.
In the embodiment of the present invention, the intake pipe main body 10 may be divided into three independent chambers which are communicated with each other, and further referring to fig. 4, it is shown a schematic noise transmission diagram of an engine intake pipe provided in the embodiment of the present invention, wherein noise enters the first chamber 101 of the intake pipe main body 10 through the air outlet 30 and propagates in the first chamber 101 along the a direction, and when the noise reaches the first outlet of the first chamber 101, the noise is divided into two paths to propagate:
the first path of noise will enter the muffling portion 40 in the direction b, will be de-energized by the muffling portion 40, and will exit the muffling portion 40 in the direction b1 into the third chamber 103.
The second path of noise enters the second chamber 102 along the direction c, and the propagation direction of the second path of noise enters the third chamber 103 along the direction c1 after the second chamber 102 changes by 180 degrees.
After the two paths of noise converge in the third chamber 103 along the direction b1 and the direction c1, the two paths of noise interfere with each other to cancel out, and a part of energy is converted into heat energy, so that the noise frequency and decibel of the finally discharged air inlet 20 are greatly reduced, the energy of the finally discharged air inlet is effectively weakened in the noise propagation process, and the NVH performance of the whole vehicle is improved.
In summary, an engine intake duct provided in an embodiment of the present invention includes: the silencer comprises an air inlet, an air outlet, an air inlet pipe main body and a silencing part; the intake pipe main part includes: a first chamber, a second chamber, a third chamber; the air outlet is connected with the first chamber, the second chamber, the third outlet and the air inlet in sequence; the inlet of the second chamber and the outlet of the second chamber are arranged in the same direction; the noise elimination portion is arranged inside the air inlet pipe main body, the first cavity and the third cavity are communicated through the noise elimination portion and the air inlet pipe main body are integrated into a whole, the air inlet pipe main body can be used for fulfilling the aim of weakening noise entering the air inlet pipe main body in cooperation with the noise elimination portion outside the normal air inlet function, the space of the air inlet system occupying the engine room is greatly reduced, and the weight of the air inlet system is reduced.
Alternatively, referring to fig. 5, which is a schematic cross-sectional structural diagram of a muffling portion provided in an embodiment of the present invention, and is a partial schematic view of the muffling portion in a-a cross-sectional view shown in fig. 2, wherein the muffling portion 40 includes: at least one silencing tube 401 and at least one first silencing cavity 402, wherein one end of the silencing tube 401 is connected with the first cavity 101, and the other end of the silencing tube 401 is connected with the second cavity 102; the fourth inlet 4021 of the first muffling chamber 402 is connected to the first chamber 101 and the fourth outlet 4022 of the first muffling chamber 402 is connected to the third chamber 103.
In the embodiment of the present invention, when noise enters the muffler pipe 401 of the muffling portion 40, the frequency spectrum of the noise shifts to a high frequency or a very high frequency, so that the audible sound component in the frequency spectrum is significantly reduced, thereby reducing the interference and damage to people. In addition, when noise enters the first muffling chamber 402 through the fourth inlet 4021, the noise will continuously exchange and oscillate in the first muffling chamber 402, and due to the change of the acoustic impedance, a part of the acoustic energy is suppressed, and a part of the acoustic energy is consumed and converted into heat energy, so as to achieve the effect of reducing the noise energy.
It should be noted that the length, number, and aperture of the muffling tubes 401 can be determined according to the noise frequency range, and the volume and number of the first muffling cavities 402 can be determined according to the noise frequency range, so as to balance the relationship between the noise frequency range to be muffled and the space, and to reasonably distribute the layout of the muffling portions.
Optionally, referring to fig. 5, adjacent first muffling chambers 402 are communicated with each other through a connecting pipe 403, and when there are a plurality of first muffling chambers 402, the adjacent first muffling chambers 402 are communicated with each other through the connecting pipe 403, so that noise can be continuously exchanged and oscillated between the adjacent first muffling chambers 402, and the efficiency of noise energy reduction is further improved.
Optionally, referring to fig. 1, the engine intake duct further includes: the first bracket 50 and the second bracket 60 are symmetrically arranged on the intake pipe main body 10 respectively, and are used for fixing an engine intake pipe.
Specifically, the first bracket 50 is fixed to the outer wall of the second chamber 102 of the engine intake pipe, the second bracket 60 is fixed to the outer wall of the joint of the air outlet 30, and the first bracket 50 and the second bracket 60 are located on the same plane. Be provided with the through-hole on first support 50 and the second support 60 respectively for parts such as construction bolt can effectual steady fixed engine intake pipe, prevent that engine intake pipe from deviating from preset the position in vibrations.
Alternatively, referring to fig. 6, a curved structure 104 perpendicular to the first chamber 101 is provided at the first inlet of the first chamber 101, and the gas outlet 30 is connected to the curved structure 104.
In the embodiment of the present invention, the air intake pipe of the engine needs to be connected to an air cleaner or directly connected to the engine, but in consideration of the layout of the engine compartment, a curved structure 104 perpendicular to the first chamber 101 needs to be disposed at the first inlet of the first chamber 101, and the air outlet 30 is connected to the curved structure 104, so that the directions of the air inlet 02 and the air outlet 30 are different, so as to satisfy the reasonable layout of the engine compartment.
In the embodiment of the present invention, an engine intake pipe shown in fig. 1 is formed by connecting two first housings 1 and two second housings 2 corresponding to each other, specifically referring to fig. 7, wherein the first housing 1 may include three muffling pipes 401 and a portion of two first muffling chambers 402 and an air outlet 30, the second housing 2 may include three muffling pipes 401 and another portion of two first muffling chambers 402, and when the first housing 1 and the second housing 2 are correspondingly welded together, an air inlet 20 and a first chamber 101, a second chamber 102, a third chamber 103 and a complete muffling portion 40 are formed. Through such design, can reduce the processing degree of difficulty of engine intake pipe, avoid increasing because of the processing cost that integrated into one piece caused.
Alternatively, the present invention may be implemented in another way, and referring to fig. 8, a schematic structural diagram of another engine intake pipe provided in an embodiment of the present invention is shown, where the engine intake pipe includes: the air inlet pipe comprises an air inlet pipe main body 01, an air inlet 02, an air outlet 03 and a sound attenuation part 04.
Specifically, referring to fig. 9, which shows a schematic C-C cross-sectional view of an engine intake pipe provided in fig. 8 in an embodiment of the present invention, the intake pipe main body 01 includes: a first chamber 011, a second chamber 012, a third chamber 013; the air outlet 03 is connected with a first inlet of the first chamber 011, a first outlet of the first chamber 011 is connected with a second inlet of the second chamber 012, a second outlet of the second chamber 012 is connected with a third inlet of the third chamber 103, and a third outlet of the third chamber 013 is connected with the air inlet 02; a second inlet of the second chamber 012 and a second outlet of the second chamber 012 are arranged in the same direction; the noise elimination portion 04 is provided inside the intake pipe main body 01, and the noise elimination portion 04 communicates the first chamber 011 with the third chamber 013.
In the embodiment of the present invention, the intake pipe main body 01 may be divided into three independent chambers which are communicated with each other, and further referring to fig. 10, it shows a schematic noise transmission diagram of another engine intake pipe provided in the embodiment of the present invention, wherein noise enters the first chamber 011 of the intake pipe main body 01 through the air outlet 03 and propagates in the first chamber 011 along the direction d, and then the noise propagates in two paths:
the first path of noise enters the muffling portion 04 in the direction e, is reduced in energy by the muffling portion 04, and exits the muffling portion 04 in the direction e1 to enter the third chamber 013.
The second path of noise enters the second chamber 012 in the direction f, and the propagation direction thereof enters the third chamber 013 in the direction f1 after the second chamber 012 is changed by 180 degrees.
After the two paths of noise converge in the third chamber 013 along the direction e1 and the direction f1 respectively, the two paths of noise interfere with each other to be offset, and a part of energy is converted into heat energy, so that the noise frequency and decibel of the finally discharged air inlet 02 are greatly reduced, the energy of the finally discharged air inlet is effectively weakened in the noise propagation process, and the NVH performance of the whole vehicle is improved.
Alternatively, referring to fig. 11, which shows a schematic cross-sectional structure diagram of another sound-deadening portion provided in an embodiment of the present invention, the sound-deadening portion 04 includes: a second muffling chamber 041 and at least one baffle 042; at least one partition 042 is disposed in the second muffling chamber 041, for dividing the second muffling chamber 041 into second sub-muffling chambers 0411; a plurality of silencing holes 0412 are correspondingly arranged on the wall of the second sub-silencing cavity 0411. Alternatively, the volumes of the different second sub-muffling chambers 0411 are different.
In the embodiment of the present invention, when the noise passes through the silencing hole 0412 of the silencing part 04, a part of the sound energy of the noise is changed into heat energy by overcoming the friction resistance and the viscous force, so that the audible sound component in the frequency spectrum is obviously reduced, thereby reducing the interference and the injury to people. In addition, when noise enters the second sub-muffling chamber 0411 through the muffling hole 0412, the noise will continuously oscillate in the second sub-muffling chamber 0411, and due to the change of the acoustic impedance, a part of the sound energy is suppressed, and a part of the sound energy is consumed and converted into heat energy, so as to reduce the noise energy.
It should be noted that the number of the partition boards 042 can be increased or decreased (at least 1) according to actual requirements, the partition boards 042 can be extended or retracted, and the size of each second sub-muffling cavity 0411 can be adjusted by moving the position of the partition board 042, so as to reduce noise in different frequency bands.
Optionally, the silencing holes 0412 arranged in different second sub-silencing cavities 0411 have different pore diameters and different porosities for eliminating noises with different frequencies.
In the embodiment of the present invention, the porosity is a percentage of the volume of the pores in the bulk material to the total volume of the material in a natural state, so that the present invention can determine the pore diameter and the porosity of the silencing hole 0412 according to the noise frequency range, balance the relationship between the noise frequency range to be eliminated and the space, and reasonably distribute the layout of the silencing part.
Alternatively, referring to fig. 8, the engine intake duct further includes: first support 05 and second support 06, first support 05 and second support 06 symmetry respectively set up on intake pipe main part 01 for fixed engine intake pipe.
Specifically, the first bracket 05 is fixed to the outer wall of the second chamber 012 of the engine intake pipe, the second bracket 06 is fixed to the outer wall of the joint of the air outlet 03, and the first bracket 05 and the second bracket 06 are located on the same plane. Be provided with the through-hole on first support 05 and the second support 06 respectively for parts such as construction bolt can effectual steady fixed engine intake pipe, prevent that engine intake pipe from deviating from preset the position in vibrations.
Alternatively, referring to fig. 12, a curved structure 014 perpendicular to the first chamber 011 is provided at the first inlet of the first chamber 011, and the outlet 03 is connected to the curved structure 014.
In the embodiment of the invention, the air inlet pipe of the engine needs to be connected with an air cleaner or directly connected with the engine, but in consideration of the layout of the engine compartment, a bent structure 014 perpendicular to the first chamber 011 needs to be arranged at the first inlet of the first chamber 011, and the air outlet 03 is connected with the bent structure 014, so that the directions of the air inlet 02 and the air outlet 03 are different, and the reasonable layout of the engine compartment is met.
In addition, an engine intake duct page shown in fig. 8 is formed by welding two independent housings corresponding to each other, which may specifically refer to the description of fig. 7, and the embodiment of the present invention is not described herein again.
An embodiment of the present invention further provides an engine air intake system, including: the engine air inlet pipe is connected with the air filter, the air filter is connected with the air compressor, the air compressor is respectively connected with the intercooler and the engine, and the intercooler is connected with the engine. Through the components, a complete engine air inlet system is formed, so that the engine air inlet system can perform a normal air inlet function and can also achieve the purpose of weakening noise entering an air inlet pipe main body.
In summary, an engine intake pipe and an engine intake system provided in an embodiment of the present invention include: the silencer comprises an air inlet, an air outlet, an air inlet pipe main body and a silencing part; the intake pipe main part includes: a first chamber, a second chamber, a third chamber; the air outlet is connected with the first chamber, the second chamber, the third outlet and the air inlet in sequence; the inlet of the second chamber and the outlet of the second chamber are arranged in the same direction; the noise elimination portion is arranged inside the air inlet pipe main body, the first cavity and the third cavity are communicated through the noise elimination portion and the air inlet pipe main body are integrated into a whole, the air inlet pipe main body can be used for fulfilling the aim of weakening noise entering the air inlet pipe main body in cooperation with the noise elimination portion outside the normal air inlet function, the space of the air inlet system occupying the engine room is greatly reduced, and the weight of the air inlet system is reduced.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An engine intake duct, characterized by comprising:
the silencer comprises an air inlet, an air outlet, an air inlet pipe main body and a silencing part;
the intake pipe main body includes: a first chamber, a second chamber, a third chamber;
the air outlet is connected with a first inlet of the first chamber, a first outlet of the first chamber is connected with a second inlet of the second chamber, a second outlet of the second chamber is connected with a third inlet of the third chamber, and a third outlet of the third chamber is connected with the air inlet;
the second inlet of the second chamber and the second outlet of the second chamber are arranged in the same direction;
the silencing portion is arranged inside the air inlet pipe main body and communicated with the first chamber and the third chamber.
2. The engine intake of claim 1,
the noise elimination portion includes: at least one muffling tube and at least one first muffling chamber,
one end of the silencing pipe is connected with the first cavity, and the other end of the silencing pipe is connected with the second cavity;
and a fourth inlet of the first silencing cavity is connected with the first chamber, and a fourth outlet of the first silencing cavity is connected with the third chamber.
3. The engine intake of claim 2,
and the adjacent first silencing cavities are communicated through a connecting pipe.
4. The engine intake of claim 1,
the noise elimination portion includes: a second muffling chamber and at least one baffle;
the at least one partition plate is arranged in the second silencing cavity and is used for dividing the second silencing cavity into a plurality of different second sub-silencing cavities;
and a plurality of silencing holes are correspondingly arranged on the wall of the second sub-silencing cavity.
5. The engine intake of claim 4,
the diameters and the porosities of the silencing holes arranged in the different second sub-silencing cavities are different;
the different second sub-chambers have different volumes.
6. The engine intake of claim 1,
and a bent structure perpendicular to the first chamber is arranged at the first inlet of the first chamber, and the air outlet is connected with the bent structure.
7. The engine intake of claim 1, further comprising:
a first bracket and a second bracket,
the first support and the second support are symmetrically arranged on the air inlet pipe main body respectively and used for fixing the engine air inlet pipe.
8. An engine air intake system, comprising: an air cleaner, a compressor, an intercooler and an engine intake as claimed in any one of claims 1 to 7;
the engine air inlet pipe is connected with the air filter, the air filter is connected with the air compressor, the air compressor is respectively connected with the intercooler and the engine, and the intercooler is connected with the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901611.7A CN109578183B (en) | 2017-09-28 | 2017-09-28 | Engine air inlet pipe and engine air inlet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901611.7A CN109578183B (en) | 2017-09-28 | 2017-09-28 | Engine air inlet pipe and engine air inlet system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578183A CN109578183A (en) | 2019-04-05 |
| CN109578183B true CN109578183B (en) | 2020-07-28 |
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| CN201710901611.7A Active CN109578183B (en) | 2017-09-28 | 2017-09-28 | Engine air inlet pipe and engine air inlet system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| BR9810148A (en) * | 1997-06-20 | 2001-12-26 | Mann & Hummel Filter | Intake system |
| DE19924870A1 (en) * | 1999-05-29 | 2000-11-30 | Mann & Hummel Filter | Intake pipe for the intake air of internal combustion engines with a relief point for pressure waves |
| JP3516915B2 (en) * | 2000-10-24 | 2004-04-05 | 富士重工業株式会社 | Engine intake duct structure |
| CN201560869U (en) * | 2009-12-18 | 2010-08-25 | 中国汽车技术研究中心 | Serial multimode air inlet resonant cavity |
| CN204553015U (en) * | 2015-03-20 | 2015-08-12 | 徐工集团工程机械股份有限公司 | A kind of duct attenuation device, vehicle sound-attenuating system and vehicle |
| CN205064145U (en) * | 2015-10-13 | 2016-03-02 | 浙江吉利汽车研究院有限公司 | A wide band sound -attenuating structure for engine air intake system |
| CN105402023A (en) * | 2015-11-25 | 2016-03-16 | 重庆普什机械有限责任公司 | Intake control system |
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