CN204128677U - A kind of Valve EGR noise-measuring system - Google Patents
A kind of Valve EGR noise-measuring system Download PDFInfo
- Publication number
- CN204128677U CN204128677U CN201420610073.8U CN201420610073U CN204128677U CN 204128677 U CN204128677 U CN 204128677U CN 201420610073 U CN201420610073 U CN 201420610073U CN 204128677 U CN204128677 U CN 204128677U
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- valve egr
- noise
- measuring system
- egr
- pipeline
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- 238000012545 processing Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 15
- 101150000195 EGR3 gene Proteins 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Abstract
The utility model discloses a kind of Valve EGR noise-measuring system, Valve EGR one end to be detected connects source of the gas, air-flow is caused outdoor discharge by the pipeline being provided with pressure transducer by the other end, the control signal port of described Valve EGR is connected with control module, described Valve EGR is other is provided with sound collection mechanism, and signal is delivered to DPA data processing activity by described pressure transducer and sound collecting mechanism.The utility model can make test Valve EGR work independently, thus test its noise condition more accurately, owing to eliminating the interference of engine work noise under whole vehicle state, test result comparatively accurately and reliably, and can regulate the working pressure of Valve EGR, the noise of test analysis Valve EGR under different operating pressure state, implementation cycle is shorter, cost is low, and disposal route is simple, is convenient to practice.
Description
Technical field
The utility model relates to vehicle fuel oil evaporation system noise technical field of measurement and test, particularly relates to one and carry out Valve EGR noise-measuring system in semianechoic room.
Background technology
Gasoline is a kind of volatile liquid, often can be full of fuel vapor under normal temperature in fuel tank, and if do not processed, fuel-steam can be dispersed in car, and cause being full of smell of petrol in car, impact is taken.Meanwhile, fuel vapor evaporate in air, also can produce atmospheric pollution, and increases the actual consumption amount of fuel oil.Have data to show, regular price gasoline car runs one day and gives off about more than 560 grams of pollutants (HC, CO, NOx, a small amount of SO2 and leaded thing) under good condition.Wherein 60% from tail gas, and 20% from fuel tank, and 20% from crankcase.Limited so country has formulated relevant environmental regulation, do not limit and cause serious pollution by atmospheric environment.The effect of fuel vaporization system is exactly the fuel-steam in fuel tank is incorporated into engine chamber burning, reduces oil consumption, and prevents from evaporateing in air, reduce atmospheric pollution.
Vehicle fuel oil evaporation control system primarily of activated carbon canister, Valve EGR, electronic controller, quick connector, the composition such as pipeline and support.Charcoal filter in activated carbon canister is used for collecting the fuel-steam from fuel tank, until oil vapour is saturated.ECU, according to steering order, controls Valve EGR and opens, oil vapour saturated in fresh air and canister is mixed to form regeneration air stream, washes away canister, and introduce in engine air inlet tube by fuel mixture, enter firing chamber combustion.
Valve EGR is opened under ECU steering order, impact due to valve land thus produce noise, simultaneously, due to the frequent opening and closing of valve, cause air-flow by also can pneumatic noise be produced during valve, easily cause client to complain, therefore need to carry out testing research to the noise of Valve EGR work, to control, but testing tool not special at present, thus be difficult to monitor the quality of Valve EGR.
Utility model content
What technical problem to be solved in the utility model was is fast construction testboard bay, simulation Valve EGR works on car load, test analysis is carried out to its noise produced at various pressures, thus devises a kind of device that can carry out Valve EGR noise testing in semianechoic room.
To achieve these goals, the technical solution adopted in the utility model is: a kind of Valve EGR noise-measuring system, Valve EGR one end to be detected connects source of the gas, air-flow is caused outdoor discharge by the pipeline being provided with pressure transducer by the other end, the control signal port of described Valve EGR is connected with control module, described Valve EGR is other is provided with sound collection mechanism, and signal is delivered to DPA data processing activity by described pressure transducer and sound collecting mechanism.
Described sound collection mechanism is microphone, and described microphone is fixed on the position of distance Valve EGR 8-12CM.
Described Valve EGR and the pipeline connect between source of the gas are provided with pressure adjustment assembly.
Described Valve EGR noise-measuring system is installed in anechoic room, and described source of the gas is positioned at outside anechoic room.
Described Valve EGR and pipeline are fixed unsettled by support.
Described support is height-adjustable support, and described Valve EGR and pipeline are fixed on support by rubber rope.
Described DPA data processing activity comprises the data acquisition unit of Bonding pressure sensor and sound collecting mechanism, and connection data collector carries out the computer of data processing and display.
The utility model can make test Valve EGR work independently, thus test its noise condition more accurately, owing to eliminating the interference of engine work noise under whole vehicle state, test result comparatively accurately and reliably, and can regulate the working pressure of Valve EGR, the noise of test analysis Valve EGR under different operating pressure state, implementation cycle is shorter, cost is low, and disposal route is simple, is convenient to practice.
Accompanying drawing explanation
Mark in the content expressed every width accompanying drawing in the utility model instructions below and figure is briefly described:
Fig. 1 is Valve EGR noise-measuring system structural representation;
Mark in above-mentioned figure is: 1, source of the gas; 2, pressure adjustment assembly; 3, Valve EGR; 4, microphone; 5, pressure transducer; 6, support; 7, control module; 8, computer; 9, data acquisition unit.
Embodiment
Valve EGR 3 noise-measuring system is arranged in anechoic room, thus avoid noise to the interference of experiment, known see Fig. 1, Valve EGR 3 one end connects the source of the gas 1 be positioned at outside anechoic room, air-flow causes outside anechoic room by pipeline by the other end, source of the gas 1 and gas outlet are placed in outdoor, source of the gas 1 and exit pneumatic noise can be avoided to impact test result.
Valve EGR 3 and the pipeline connect between source of the gas 1 are provided with pressure adjustment assembly 2, pressure adjustment assembly 2 can regulate the compressed-air actuated pressure by Valve EGR 3, thus regulate the different operating pressure of Valve EGR 3, the pipeline of drawing air-flow is provided with pressure transducer 5, pressure transducer 5 to be arranged on Valve EGR 3 export pipeline distance export pipeline 5cm place for, for testing the pressure in Valve EGR 3 exit, this external Valve EGR 3 is other arranges sound collection mechanism, for testing noise when Valve EGR 3 works.The preferred microphone 4 of sound collection mechanism, microphone 4 is fixed on the position of distance Valve EGR 38-12CM, is preferably suspended in 10CM place above Valve EGR 3.
Valve EGR 3 and pipeline are fixed unsettled by support 6, and Valve EGR 3 and pipeline level are fixed, and make Valve EGR 3 overhead height 1m.Support 6 is height-adjustable support 6, and Valve EGR 3 and pipeline are fixed on support 6 by rubber rope, easy disassembly, and the vibrations of flexible rubber rope Absorbable rod, avoid producing noise.
The control signal port of Valve EGR 3 is connected with control module 7, control module 7 can regulate the frequency of operation of Valve EGR 3, ECU on simulation car load controls, signal is delivered to DPA data processing activity by pressure transducer 5 and sound collecting mechanism, DPA data processing activity comprises the data acquisition unit 9 of Bonding pressure sensor 5 and sound collecting mechanism, and connection data collector 9 carries out the computer 8 of data processing and display, thus can by computer 8 directly display measurement result.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious the utility model specific implementation is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection domain of the present utility model without to improve.
Claims (7)
1. a Valve EGR noise-measuring system, it is characterized in that: Valve EGR one end to be detected connects source of the gas, air-flow is caused outdoor discharge by the pipeline being provided with pressure transducer by the other end, the control signal port of described Valve EGR is connected with control module, described Valve EGR is other is provided with sound collection mechanism, and signal is delivered to DPA data processing activity by described pressure transducer and sound collecting mechanism.
2. Valve EGR noise-measuring system according to claim 1, is characterized in that: described sound collection mechanism is microphone, and described microphone is fixed on the position of distance Valve EGR 8-12CM.
3. Valve EGR noise-measuring system according to claim 1, is characterized in that: described Valve EGR and the pipeline connect between source of the gas are provided with pressure adjustment assembly.
4. Valve EGR noise-measuring system according to claim 1, is characterized in that: described Valve EGR noise-measuring system is installed in anechoic room, and described source of the gas is positioned at outside anechoic room.
5. Valve EGR noise-measuring system according to claim 1, is characterized in that: described Valve EGR and pipeline are fixed unsettled by support.
6. Valve EGR noise-measuring system according to claim 5, is characterized in that: described support is height-adjustable support, and described Valve EGR and pipeline are fixed on support by rubber rope.
7. Valve EGR noise-measuring system according to claim 1, it is characterized in that: described DPA data processing activity comprises the data acquisition unit of Bonding pressure sensor and sound collecting mechanism, and connection data collector carries out the computer of data processing and display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610073.8U CN204128677U (en) | 2014-10-21 | 2014-10-21 | A kind of Valve EGR noise-measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610073.8U CN204128677U (en) | 2014-10-21 | 2014-10-21 | A kind of Valve EGR noise-measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204128677U true CN204128677U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420610073.8U Active CN204128677U (en) | 2014-10-21 | 2014-10-21 | A kind of Valve EGR noise-measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204128677U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136286A (en) * | 2015-09-01 | 2015-12-09 | 奇瑞汽车股份有限公司 | Device and method for testing decompression noise of supercharger |
| CN112414722A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Noise test method and noise test bench for fuel evaporation system |
-
2014
- 2014-10-21 CN CN201420610073.8U patent/CN204128677U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136286A (en) * | 2015-09-01 | 2015-12-09 | 奇瑞汽车股份有限公司 | Device and method for testing decompression noise of supercharger |
| CN105136286B (en) * | 2015-09-01 | 2018-08-10 | 奇瑞汽车股份有限公司 | A kind of test device and test method of booster pressure release noise |
| CN112414722A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Noise test method and noise test bench for fuel evaporation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |