CN111413292A - Analysis method for rapidly identifying whole vehicle odor source - Google Patents
Analysis method for rapidly identifying whole vehicle odor source Download PDFInfo
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- CN111413292A CN111413292A CN202010386677.9A CN202010386677A CN111413292A CN 111413292 A CN111413292 A CN 111413292A CN 202010386677 A CN202010386677 A CN 202010386677A CN 111413292 A CN111413292 A CN 111413292A
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- 238000004458 analytical method Methods 0.000 title claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 47
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 239000011521 glass Substances 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 238000012986 modification Methods 0.000 claims abstract description 5
- 230000004048 modification Effects 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 3
- -1 α mg/m3 Chemical class 0.000 abstract description 5
- 230000032683 aging Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000012790 confirmation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 229920002620 polyvinyl fluoride Polymers 0.000 description 5
- 238000007405 data analysis Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/13—Standards, constitution
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an analysis method for rapidly identifying the odor source of a whole vehicle, which comprises the following steps of S1, testing the whole vehicle, placing the whole vehicle in a cabin of the whole vehicle, sealing for 12-16 h, collecting air in the vehicle by using a vacuum box, testing on the vehicle by using gas, S2, testing an assembly, placing a glass cover on the surface of a sample to be tested, pumping the air in the glass cover by using an air suction gun, vertically irradiating the glass cover by using an infrared lamp, sampling by using a sampling needle for 5m L, S3, analyzing data, respectively calculating a concentration value of a compound of the whole vehicle and a concentration value of the compound of the assembly, namely Cmg/m3, obtaining a threshold value of the odor of the compound, namely α mg/m3, the contribution rate of β = C/α, and S4, improving the odor, or performing adjustment and modification on the compound according to needs.
Description
Technical Field
The invention relates to the field of automobiles, in particular to an analysis method for rapidly identifying the odor source of a whole automobile.
Background
The vehicle interior structure mainly comprises a vehicle interior and a body-in-white. The smell of the whole vehicle mainly comes from the interior of the vehicle, but particularly from which interior of the vehicle, a plurality of assemblies of the interior of the vehicle 50 need to be checked one by one.
The traditional method is that the whole vehicle is placed in a cabin of the whole vehicle and sealed for 16 hours, and aldehyde ketone compounds are collected by a DNHP pipe and hydrocarbon compounds are collected by a Tenax pipe respectively for test analysis. The assembly pieces in the same batch with the assemblies forming the whole vehicle are placed in a pretreatment cabin and adjusted for 24 hours; and then placing the adjusted assembly in a aged and blank-confirmed Taidlar bag for heating for 2h, and then respectively collecting aldehyde ketone compounds and Tenax hydrocarbon compounds by utilizing a DNHP pipe for test analysis.
Through comparative analysis of the concentration of the odor compounds of the whole vehicle and the concentration of the odor compounds of each assembly, the assemblies from which the odor of the whole vehicle is mainly originated are determined, and subsequent odor modification is facilitated.
The existing analysis method for identifying the whole vehicle odor source is as follows:
1. the test period is long: an assembly test requires 4 stages, respectively assembly adjustment, Tenax tube aging blank validation, tedlar bag aging blank validation and assembly odor collection and testing. Wherein the assembly adjustment is not less than 24h, the Tenax tube requires no less than 3h of aging blank confirmation, the Taidra bag aging blank confirmation is not less than 24h, and the assembly odor collection and testing is not less than 8 h.
2. The test process is complicated: an assembly test needs to go through 4 stages, which are: adjusting the assembly; tenax tube aging blank confirmation: aging, testing on the machine, and analyzing whether the blank meets the requirement or not on the detection result;
aging blank confirmation of the tedlar bag: checking whether the tedlar bag leaks gas or not, filling nitrogen to clean the bag, filling nitrogen to seal and placing the bag in a heating chamber, collecting aldehyde and ketone compounds and hydrocarbon compounds by using a DNHP pipe and a Tenax pipe respectively, performing on-machine test, and analyzing whether the blank meets the requirements or not on the detection result;
collecting and testing the smell of the assembly: checking whether the tedlar bag leaks gas or not, filling nitrogen to clean the assembly, filling nitrogen to seal and placing the tedlar bag in a heating chamber, collecting aldehyde and ketone compounds and hydrocarbon compounds by using a DNHP pipe and a Tenax pipe respectively, testing on a computer, and analyzing whether the blank meets the requirements or not on the detection result.
3. The odor of the same batch of the assembly is different: the smell of the whole vehicle assembly is different from that of the same batch of assemblies because the temperature, the humidity, the wind speed, the packaging form, the surrounding environment and the like of the storage environment are different.
4. Absence of odorous compounds: the DNHP tube and the Tenax tube have selective adsorption, resulting in that odorous compounds can only be collected into the aldo-ketone compounds and the hydrocarbon compounds, while odorous compounds originating from other classes cannot be collected and detected.
Data analysis is cumbersome: one assembly generally has hundreds of compounds, and more than 50 assemblies in the vehicle need to analyze and compare five or six thousand data, and need to consider the influence of odor threshold, and the work load is big, easily causes the judgement mistake.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an analysis method for rapidly identifying the odor source of a whole vehicle.
In order to achieve the purpose, the invention adopts the following technical scheme:
an analysis method for rapidly identifying the odor source of a whole vehicle comprises the following steps:
s1: testing the whole vehicle, namely placing the whole vehicle in a cabin of the whole vehicle, sealing for 12-16 h, collecting air in the vehicle by using a vacuum box, and testing the air on the machine;
s2, performing assembly test, namely placing the glass cover on the surface of the tested sample to ensure that the glass cover cannot slide and has no gap with the surface of the assembly, completely pumping air in the glass cover by using an air extraction gun, vertically irradiating the glass cover by using an infrared lamp, and performing machine test by using a sampling needle for sampling 5m L;
s3, analyzing data, respectively calculating a compound concentration value of the whole vehicle and a compound concentration value Cmg/m3 of an assembly, obtaining a compound odor threshold value of α mg/m3 and a contribution degree of β = C/α, finding out a compound with the whole vehicle odor compound contribution degree β being more than or equal to 1, and then respectively finding out the contribution degree of β ij (i-the ith assembly, j-the jth compound in the ith assembly) of the assembly and the corresponding compound, wherein the sum of the contribution degrees of the ith assembly is
；
S4: improving smell, finding out assembly parts for modification, or modifying the compound according to requirements.
Preferably, the distance between the light source of the infrared lamp for vertically irradiating the glass cover and the glass cover is 25cm, the infrared lamp is arranged for irradiating and heating at 65 ℃, and the heating time is 2h-2.5 h.
Preferably, the vehicle and total compound concentration values Cmg/m3 are calculated from peak areas and odor compound calibration curves, and the compound odor threshold α mg/m3 and the contribution β = C/α are obtained from an odor threshold database.
Preferably, i is the ith module, and j is the jth compound in the ith module.
Preferably, the assembly is ranked top five with the contribution γ, and the compound is ranked top ten.
The invention has the beneficial effects that:
1. the invention shortens the testing period of the assembly and improves the testing efficiency. The test time 59h is shortened to 4h by a conventional one-pack test.
2. The invention simplifies the testing process, and the traditional test needs 4 parts, namely assembly adjustment, Tenax aging empty confirmation, Taidra bag aging blank confirmation and assembly odor collection and testing. Each section is made up of a plurality of small segments. And the whole vehicle fixed-point heating test can be completed when two small ring sections are needed, namely heating and sampling on-machine test respectively.
3. According to the invention, sample difference is not stored, and the tested assembly is an assembly installed in the whole vehicle, so that the difference between the tested sample and the whole vehicle assembly is avoided.
4. The method has the advantages that the condition of odor compound loss does not exist, the sampled gas is directly detected by the testing equipment without passing through an adsorption tube, and the problem of selective adsorption does not exist.
5. The invention has simple and reliable data analysis. The odor contribution degree is creatively introduced, so that the data analysis is more scientific and more practical, and the test result is better utilized.
Fig. 1 is a flow chart of an analysis method for rapidly identifying the odor source of a whole vehicle according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example (b):
s1, testing the whole vehicle, namely placing the whole vehicle in a whole vehicle cabin, sealing for 12-16 h, collecting air in the vehicle by using a vacuum box, and testing the air on a machine;
s2, testing the assembly, namely placing the glass cover on the surface of the tested sample to ensure that the glass cover cannot slide and has no gap with the surface of the assembly, pumping air in the glass cover by using an air extraction gun, vertically irradiating the glass cover by using an infrared lamp, enabling a light source to be 25cm away from the glass cover, setting the irradiation and heating at 65 ℃ for 2h-2.5h, and sampling by using a sampling needle for 5m L to test the assembly;
s3, analyzing data, respectively calculating a compound concentration value of the whole vehicle and an assembly compound concentration value Cmg/m3 according to a peak area and an odor compound standard curve, obtaining a compound odor threshold value α mg/m3 from an odor threshold value database, and a contribution degree β = C/α, finding out a compound with the whole vehicle odor compound contribution degree β being more than or equal to 1, and then respectively finding out the contribution degree β ij (i-the ith assembly, j-the jth compound in the ith assembly) of the assembly and the corresponding compound, wherein the sum of the contribution degrees of the ith assembly is the sum of the contribution degrees of the ith assembly
;
And S4, improving smell, and finding out the assembly with the contribution degree gamma of the top five in the rank for modification, or modifying the compounds with the degree gamma of the top ten in the rank according to the requirement.
The above examples can show that the method is used for identifying the odor source of the whole vehicle:
1. the assembly test period is shortened, and the test efficiency is improved;
2. the test process is simplified;
3. the difference of samples is not stored, the condition of odor compound deletion is avoided, and the test result is real and reliable;
the data analysis is simple and reliable, more scientific and more practical, so that the test result is better applied.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An analysis method for rapidly identifying the odor source of a whole vehicle is characterized by comprising the following steps:
s1: testing the whole vehicle, namely placing the whole vehicle in a cabin of the whole vehicle, sealing for 12-16 h, collecting air in the vehicle by using a vacuum box, and testing the air on the machine;
s2, performing assembly test, namely placing the glass cover on the surface of the tested sample to ensure that the glass cover cannot slide and has no gap with the surface of the assembly, completely pumping air in the glass cover by using an air extraction gun, vertically irradiating the glass cover by using an infrared lamp, and performing machine test by using a sampling needle for sampling 5m L;
s3, analyzing data, respectively calculating the concentration value of the compounds of the whole vehicle and the concentration value of the compounds of the assembly Cmg/m3, obtaining the threshold value of the compounds of α mg/m3 and the contribution degree of β = C/α, finding out the compounds of which the contribution degree of the compounds of the whole vehicle is β and is more than or equal to 1, and then respectively finding out the contribution degree of the assembly and the corresponding compounds of β ij and the sum of the contribution degrees of the ith assembly
；
S4: improving smell, finding out assembly parts for modification, or modifying the compound according to requirements.
2. The analysis method for rapidly identifying the odor source of the whole vehicle as claimed in claim 2, wherein the light source of the infrared lamp vertically irradiating the glass cover is 25cm away from the glass cover, the infrared lamp is provided with 65 ℃ for irradiation and heating, and the heating time is 2h-2.5 h.
3. The analytical method for rapidly identifying the odor source of a whole vehicle as claimed in claim 3, wherein the whole vehicle compound concentration value and the total compound concentration value Cmg/m3 are calculated according to a peak area and an odor compound standard curve, and the compound odor threshold value α mg/m3 and the contribution degree β = C/α are obtained from an odor threshold database.
4. The analytical method for rapidly identifying the odor source of a whole vehicle as claimed in claim 3, wherein i is the ith module and j is the jth compound in the ith module.
5. The analytical method for rapidly identifying the odor source of a whole vehicle as claimed in claim 4, wherein the total contribution γ is ranked five, and the compound is ranked ten.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010386677.9A CN111413292A (en) | 2020-05-09 | 2020-05-09 | Analysis method for rapidly identifying whole vehicle odor source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010386677.9A CN111413292A (en) | 2020-05-09 | 2020-05-09 | Analysis method for rapidly identifying whole vehicle odor source |
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| CN111413292A true CN111413292A (en) | 2020-07-14 |
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| CN202010386677.9A Pending CN111413292A (en) | 2020-05-09 | 2020-05-09 | Analysis method for rapidly identifying whole vehicle odor source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341049A (en) * | 2021-06-10 | 2021-09-03 | 苏州华碧微科检测技术有限公司 | Analysis method of amine compound of automobile material |
| CN113777232A (en) * | 2021-08-24 | 2021-12-10 | 东风汽车集团股份有限公司 | Method for evaluating contribution degree of part assembly to smell in vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424292A (en) * | 2013-08-19 | 2013-12-04 | 重庆长安汽车股份有限公司 | Harmful gas sampling method for automotive interior parts |
| CN108918691A (en) * | 2018-03-21 | 2018-11-30 | 北京卡达克数据有限公司 | A kind of in-car smell substance determines method and in-car smell substance source tracing method |
| CN109142637A (en) * | 2018-09-13 | 2019-01-04 | 浙江众泰汽车制造有限公司 | A kind of material smell is to part assembly smell contribution rate appraisal procedure |
| CN109959748A (en) * | 2019-03-22 | 2019-07-02 | 中国第一汽车股份有限公司 | It is a kind of car emphasis odoring substance and the high-risk components of smell determine method |
-
2020
- 2020-05-09 CN CN202010386677.9A patent/CN111413292A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424292A (en) * | 2013-08-19 | 2013-12-04 | 重庆长安汽车股份有限公司 | Harmful gas sampling method for automotive interior parts |
| CN108918691A (en) * | 2018-03-21 | 2018-11-30 | 北京卡达克数据有限公司 | A kind of in-car smell substance determines method and in-car smell substance source tracing method |
| CN109142637A (en) * | 2018-09-13 | 2019-01-04 | 浙江众泰汽车制造有限公司 | A kind of material smell is to part assembly smell contribution rate appraisal procedure |
| CN109959748A (en) * | 2019-03-22 | 2019-07-02 | 中国第一汽车股份有限公司 | It is a kind of car emphasis odoring substance and the high-risk components of smell determine method |
Non-Patent Citations (1)
| Title |
|---|
| 郑虹 等: "某车型车内气味溯源研究", 《材料应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341049A (en) * | 2021-06-10 | 2021-09-03 | 苏州华碧微科检测技术有限公司 | Analysis method of amine compound of automobile material |
| CN113777232A (en) * | 2021-08-24 | 2021-12-10 | 东风汽车集团股份有限公司 | Method for evaluating contribution degree of part assembly to smell in vehicle |
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