CN204458119U - A kind of engine charge hose assembly - Google Patents
A kind of engine charge hose assembly Download PDFInfo
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- CN204458119U CN204458119U CN201420867294.3U CN201420867294U CN204458119U CN 204458119 U CN204458119 U CN 204458119U CN 201420867294 U CN201420867294 U CN 201420867294U CN 204458119 U CN204458119 U CN 204458119U
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- pipe
- hose assembly
- engine charge
- noise reduction
- charge hose
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Abstract
The utility model discloses a kind of engine charge hose assembly, comprise front bend pipe and back elbow, it is characterized in that, noise suppression pipe is provided with between described front bend pipe and back elbow, described noise suppression pipe is the double layer hollow pipe of socket, spatial radial between its inner and outer tubes is provided with some roads isolating ring, is separated into several mutual disconnected annular noise reduction cabin; Described inner tubal wall is provided with some through holes, is communicated with annular noise reduction cabin and interior pipe tube chamber.The utility model has the beneficial effect of noise suppression noise reduction.
Description
Technical field
The utility model relates to a kind of suction tude of fuel engine, especially relates to a kind of engine charge hose assembly with noise suppression function.
Background technique
Along with technical development, turbosupercharged engine is day by day universal, and it has installed the turbine inflow system that waste gas promotes additional on the basis of traditional natural aspirated engine, and more air can be inhaled into, and supports the high-power output of motor with relatively low oil consumption.Accordingly, turbosupercharged engine also brings high noisy.The main source of its noise, except the natural noise of turbine rotation, is exactly that turbine inflow system high-speed air-flow passes through caused sound.
In the gas handling system of traditional naturally aspirated engine adaptation, air draught enters resonance box by suction tude and carries out a frequency reducing, then carries out noise reduction sound-deadening through air filter assembly, then via front bend pipe and back elbow flow direction engine closure direction.Because turbosupercharged engine relative traditional natural aspirated engine air inflow increases, flow velocity increases, and produces high velocity air whirlpool at front bend pipe and back elbow place, produces and impacts, can produce obvious noise to pipeline.
As the technological means suppressing this kind of noise, Chinese patent literature discloses " a kind of air inlet flow guide pipe and preparation method thereof ", its notification number CN103670838A, disclose a kind of air inlet flow guide pipe, comprise suction port, the first rigid line, air induction hose and the second rigid line, described first rigid line one end is fixedly connected with the first suction port, the other end is fixedly connected with air induction hose, and described air induction hose one end connects described first rigid line, the other end connects the second rigid line; Wherein, described air induction hose is the class ripple struction hollow pipeline that porous nonwoven cloth and glass yarn spiral winding ultra-sonic welded are formed.
The air induction hose of this design uses nonwovens noise reduction, and its principle is that sound wave enters in the aperture of nonwovens gap, causes molecular vibrations in aperture, is absorbed by acoustic energy and be transformed into heat energy by porous nonwoven cloth.When naturally aspirated engine suction tude air-flow is unrapid, the tube wall deformation of this air induction hose is little, and intake velocity decay is little, has positive effect to noise reduction.Turbosupercharging gas handling system air flow rate is high, and flow velocity is fast, and continue to adopt the program, the distortion of flexible pipe will significantly become large, and the vibration of tube wall will significantly strengthen, and noise reduction will significantly fail; And the process step of the program own is complicated, selected materials deposits the danger sucking motor after disassembly.Be necessary for turbosupercharged engine and develop more reliable air induction hose system more targetedly.
Model utility content
The utility model technical issues that need to address are, carry out noise reduction to wide-band noise, provide a kind of engine charge hose assembly of applicable high flow capacity air-flow.
To achieve these goals, the utility model adopts following technological scheme: a kind of engine charge hose assembly, comprise front bend pipe and back elbow, noise suppression pipe is provided with between described front bend pipe and back elbow, described noise suppression pipe is the double layer hollow pipe of socket, spatial radial between its inner and outer tubes is provided with some roads isolating ring, the space between inner and outer tubes is separated into several mutual disconnected annular noise reduction cabin; Described inner tubal wall is provided with some through holes, is communicated with annular noise reduction cabin.
Sound comes from air vibration, and traditional air induction hose cannot suppress gas current friction, clash into the vibration of tube wall generation, adopts the interior pipe outer tube socket design of this programme, air vibration can be suppressed effectively in the mezzanine space of noise suppression pipe; This segment space have also been devised the radial isolating ring in some roads, is used for being formed the annular noise reduction cabin of multiple Hu Bu UNICOM, further reduces oscillation space, cut down vibrational energy, inhibit noise; The through hole that interior pipe is arranged, can destroy the vibration frequency conformity of high velocity air in interior pipe tube chamber, produces sinuous flow and flow-disturbing elimination eddy current, is of value to noise abatement.
As preferably, described outer tube is provided with the diameter of one or two gradient.The number of air inflow needed for engine combustion is controlled by car running computer ECU, and change with gas pedal change in depth, in noise suppression pipe, airspeed also synchronously changes thereupon, and its vibration frequency produced also there will be corresponding fluctuation.Design the diameter change of two or three gradients of shell, form the annular noise reduction cabin of different volumes, being to adapt to different vibration frequencies, accomplishing that specific aim is stronger.
As preferably, the diameter of the different gradients of described outer tube, according to the ascending arrangement of airflow direction.In automotive engine air intake system, high frequency noise mainly results from air-flow Upstream section, and low frequency noise mainly results from airflow downstream section, so the annular noise reduction cabin part of little for minor diameter volume is arranged near Upstream section in noise suppression pipe, in order to filter high-frequency ripple, the annular noise reduction cabin part of large for major diameter volume is arranged near tract, in order to eliminate low frequency noise.
As preferably, the annular noise reduction cabin quantity of setting in the outer tube of described each graded diameter is as 2 or 3.This is to reduce air vibration space further, plays the effect of aperture flow-disturbing further.
As preferably, the material of described noise suppression pipe is PA6.The tubing of PA6 material molding and forming has suitable rigidity, and without distortion under high flow capacity stream pressure, tube wall vibration is not obvious, excellent noise reduction effect.
As preferably, described annular noise reduction cabin is filled with sound absorbing material.The pore structure of sound absorbing material can slow down gas shock, and partial air being vibrated kinetic transformation is heat energy.
As preferably, the spread geometry of described through hole is rectangular array.Through hole effect partial result when producing flow-disturbing and eddy current of rectangular array is even, and noise reduction is also better.
As preferably, there is included angle A between the axis of described through hole and the axis of interior pipe, 30 °≤A≤60 °.The through hole of such design, its opening direction meets always gas direction, more efficient by the air-flow of through hole, is more conducive to air vibration kinetic transformation and becomes heat energy.
In sum, the utility model has the beneficial effect of noise suppression noise reduction.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the axial cross-sectional views of noise suppression tubular portion of the present utility model.
Wherein: bend pipe before 1,2 noise suppression pipes, 3 back elbows, 11 bent axle exhaust handling hoses, pipe in 21,22 outer tubes, 23 isolating rings, 24 annular noise reduction cabins, 25 through holes, 26 sound absorbing materials, 31 Decompression valvess.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
In embodiment 1 as depicted in figs. 1 and 2, a kind of engine charge hose assembly, comprise and to be linked in sequence bend pipe 1 together, noise suppression pipe 2, back elbow 3 according to airflow direction, front bend pipe is provided with bent axle exhaust handling hoses 11, and back elbow is provided with Decompression valves 31.Described noise suppression pipe is pair of lamina hollow tube, and comprise interior pipe 21 and outer tube 22, both connect together; Noise suppression pipe outer tube is ladder pipe, and the part of minor diameter is near front bend pipe, and large diameter part is near back elbow; Interior pipe is provided with some through holes 25, and shape of through holes is circular, and spread geometry is rectangular array, has included angle A, 30 °≤A≤60 ° between the axis of described through hole and the axis of interior pipe, and what select in this example is 45 °; Spatial radial between inner and outer tubes is provided with 4 road isolating rings 23, is separated into 5 mutual disconnected annular noise reduction cabins 24, and the small diameter portion of outer tube is to there being 3 annular noise reduction cabins, and the major diameter part correspondence of outer tube has 2 annular noise reduction cabins; Annular is filled with sound absorbing material 26 in noise reduction cabin, and what select in this example is alumina silicate rock wool.
This engine charge hose assembly, except sound absorbing material and fastening piece, by PA6 molding and forming, structure is simple, and it is convenient to assemble, and cost is low, supports to produce in enormous quantities, does not also have the danger that material breakdown sucks motor.
This engine charge hose assembly in normal operation, one end of front bend pipe connects air cleaner assy, and closure direction is led in the downstream of back elbow.Air draught enters resonance box by suction tude and once cushions frequency reducing, then first time noise reduction sound-deadening is carried out through air filter assembly, arrive this engine charge hose assembly again, eddy current process is carried out on the one hand by porous structure, destroy the frequency invariance of air vibration, by the annular noise reduction cabin of different-diameter, noise reduction is carried out to the pneumatic noise of different frequency on the one hand, airstream vibration energy is changed into heat energy by the sound absorbing material on the one hand by filling, thus minimizing noise, finally reach the effect eliminating the air-suction-noise in intake process, die sound and wheeze.
Inventor has carried out the noise measuring of base regime to this engine charge hose assembly, this engine charge hose assembly is used to mate on the turbogenerator of same 4G13T, its level of noise idling, 1850 rotating turbines get involved before, 1900 rotating turbines get involved after, 3000 rotating turbines run up corresponding speed per hour 80,000 ms/h time, respectively than conventional gas introduction flexible pipe reduce 6,16,9,13dB.The Kuanping Terrane rejection ability of visible engine charge hose assembly is worth certainly.
Claims (8)
1. an engine charge hose assembly, comprise front bend pipe (1) and back elbow (3), it is characterized in that, noise suppression pipe (2) is provided with between described front bend pipe and back elbow, described noise suppression pipe is the double layer hollow pipe of socket, spatial radial in it between pipe (21) and outer tube (22) is provided with some roads isolating ring (23), the space between inner and outer tubes is separated into several mutual disconnected annular noise reduction cabin (24); Described inner tubal wall is provided with some through holes, is communicated with annular noise reduction cabin (25).
2. a kind of engine charge hose assembly according to claim 1, is characterized in that, described outer tube is ladder pipe.
3. a kind of engine charge hose assembly according to claim 2, is characterized in that, the different section ladders of described outer tube are according to the ascending arrangement of airflow direction.
4. a kind of engine charge hose assembly according to Claims 2 or 3, is characterized in that, the annular noise reduction cabin quantity that described outer tube every section ladder is corresponding is 2 or 3.
5. a kind of engine charge hose assembly according to claim 1 or 2 or 3, is characterized in that, the material of described noise suppression pipe is PA6.
6. a kind of engine charge hose assembly according to claim 1 or 2 or 3, is characterized in that, described annular noise reduction cabin is filled with sound absorbing material (26).
7. a kind of engine charge hose assembly according to claim 1 or 2 or 3, is characterized in that, the spread geometry of described through hole is rectangular array.
8. a kind of engine charge hose assembly according to claim 1 or 2 or 3, is characterized in that, has included angle A, 30 °≤A≤60 ° between the axis of described through hole and the axis of interior pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867294.3U CN204458119U (en) | 2014-12-31 | 2014-12-31 | A kind of engine charge hose assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420867294.3U CN204458119U (en) | 2014-12-31 | 2014-12-31 | A kind of engine charge hose assembly |
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| Publication Number | Publication Date |
|---|---|
| CN204458119U true CN204458119U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420867294.3U Active CN204458119U (en) | 2014-12-31 | 2014-12-31 | A kind of engine charge hose assembly |
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| CN (1) | CN204458119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781076A (en) * | 2017-10-23 | 2018-03-09 | 奇瑞汽车股份有限公司 | Silencing structure of air inlet hose assembly |
-
2014
- 2014-12-31 CN CN201420867294.3U patent/CN204458119U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781076A (en) * | 2017-10-23 | 2018-03-09 | 奇瑞汽车股份有限公司 | Silencing structure of air inlet hose assembly |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |