CN205538815U - Full flow type motorcycle exhaust measurement system - Google Patents
Full flow type motorcycle exhaust measurement system Download PDFInfo
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- CN205538815U CN205538815U CN201620082357.3U CN201620082357U CN205538815U CN 205538815 U CN205538815 U CN 205538815U CN 201620082357 U CN201620082357 U CN 201620082357U CN 205538815 U CN205538815 U CN 205538815U
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Abstract
The utility model provides a full flow type motorcycle exhaust measurement system, its characterized in that: including background gas sampling module, dilution exhaust sampling module, continuous sampling mouth, geochemical gas survey analysis module, three solenoid valve, host computer, background gas sampling module, dilution exhaust sampling module and three solenoid valve's one end links to each other, and three solenoid valve's other both ends are connected with continuous sampling mouth, geochemical gas survey analysis module respectively, geochemical gas survey analysis module includes FID hydrogen flame ionization detector, CLD chemiluminescence method NOx analysis appearance, not beam split of NDIR infrared analysis appearance. The beneficial effects of the utility model are that: adopt host computer remote control, can realize real time monitoring, data record and handle, adopt the ethernet communication, data transmission bauds is fast, the analytical instrument adopts model 600FID, MODEL 600CLD, the MODEL 600NDIR of american CAI company, and is stable, reliable, the fault rate is low, measurement accuracy is high, sampling, improve equipment measurement accuracy are diluted to complete flowing, with the measurement of CFO method, fractional error <= 2%.
Description
Technical field
The utility model relates to motor exhaust detection technique field, especially relates to a kind of full flow type motor
Tail gas measures system.
Background technology
Motorcycle is as a kind of vehicles, owing to it has accommodating, the feature such as conveniently deposits,
City, small towns are borne by certain transport task, especially in some economically underdeveloped areas, due to
Its cheap and less demanding to road conditions feature, becomes everybody preferred traffic instrument, especially for society
The development of meeting plays an important role.Along with the development of modern motorcycle industry, people are meeting motorcycle
After performance and comfort level require, the requirement to environmental protection is more and more higher, the visible pair of motorcycle emission
Our living environment causes the biggest harm, and in exhaust to be detected, whether the smoke intensity of Visible pollutant
Meet national Specification.
Mostly conventional detection equipment is the detection to automobile, detects motorcycle emission or little,
But the waste gas of motorcycle emission, the life to us brings the biggest harm, needs motorcycle emission
Tail gas detect.But the requirement being as national standard improves, motorcycle exhaust discharge examines day by day
Strictly, the control accuracy of motorcycle engine mixture strength is required more and more higher.Therefore, having must
Develop a kind of motorcycle exhaust and measure system, it is possible in accurate measurement motorcycle exhaust, multiple gases is dense
Degree.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of full flow type motorcycle exhaust and measures system, permissible
Realize accurately measuring the concentration of multiple gases in motorcycle exhaust.
The technical solution adopted in the utility model is: a kind of full flow type motorcycle exhaust measures system, and it is special
Levy and be: include background gas sampling module, diluted exhaust sampling module, continuous sampling mouth, gasmetry
Analysis module, three-way magnetic valve, host computer, described background gas sampling module and diluted exhaust sampling module
Being connected by one end of sampling pipe with described three-way magnetic valve, the other two ends of described three-way magnetic valve are divided
Do not analyze module with described continuous sampling mouth, gasmetry to be connected, described gasmetry analysis module bag
Include FID flame ionization ditector, CLD chemoluminescence method NOx analyzer, NDIR not light splitting
Infrared spectrum analyser, described host computer respectively with described FID flame ionization ditector, CLD chemistry
Luminescence method NOx analyzer, NDIR not light splitting infrared spectrum analyser are connected, described FID hydrogen flame from
Sonization detector analyzes the concentration of hydrocarbon in motorcycle exhaust for measuring, described CLD chemistry
Luminescence method NOx analyzer analyzes the concentration of oxynitrides in motorcycle exhaust for measuring, described
NDIR not light splitting infrared spectrum analyser analyzes carbon monoxide in motorcycle exhaust, carbon dioxide for measuring
Concentration.
Further, described background gas sampling module include the first cleaner, background pump, the first overflow valve,
First gas flowmeter, the first magnetic valve module, the first pressure sensor, the second magnetic valve module, the back of the body
Prosperous collection bag module.
Further, described first magnetic valve module, the second magnetic valve module include multiple magnetic valve respectively,
Described background gas collection bag module includes that multiple background gas gathers airbag.
Further, described diluted exhaust sampling module includes final cleaner, sample gas pump, the second overflow
Valve, the second gas flowmeter, the 3rd magnetic valve module, the second pressure sensor, the 4th magnetic valve module,
Carrier gas collection bag module, described diluted exhaust sampling module is used for gathering Full flow dilution gas.
Further, described 3rd magnetic valve module, the 4th magnetic valve module include multiple magnetic valve respectively,
Described carrier gas collection bag module includes that multiple carrier gas gathers airbag.
Further, described full flow type motorcycle exhaust measurement system also includes collection bag cleaning module, institute
State collection bag cleaning module to include the 3rd cleaner, clean pump.
Further, be additionally provided with between described three-way magnetic valve and gasmetry analysis module sampling pump,
3rd overflow valve, the 4th cleaner, described 4th cleaner and described NDIR not light splitting infrared spectrum analyser
Between be additionally provided with condenser.
Further, described gasmetry analysis module also includes gas analyzer demarcating module, described gas
Body analyzer demarcating module include splitting instrument, front panel insert soon, gas cylinder Standard Gases, be used for demarcating described
FID flame ionization ditector, CLD chemoluminescence method NOx analyzer, NDIR not light splitting are infrared
Analyzer, described segmentation instrument is connected with described host computer.
Further, described gasmetry analysis module also includes multiple pressure regulator valve, multiple magnetic valve.
Further, described full flow type motorcycle exhaust measurement system also includes communication module, described communication
Module one end is connected with described host computer, and the other end passes with described first pressure sensor, the second pressure
Sensor and multiple magnetic valve are connected.
The utility model compared with prior art have the beneficial effect that employing host computer remotely control, control
Software is with Windows Xp as platform, and being easily understood in operation interface, easily operates, it is possible to achieve in real time
The functions such as monitoring, data record process, and remotely can control analyzing module, function is strong
Greatly；Using ethernet communication, data transmission bauds is fast；Analytical instrument uses the Model of CAI company of the U.S.
600FID, MODEL 600CLD, MODEL 600NDIR measures parts as core, stable,
Reliably, failure rate is low, certainty of measurement height；Employing Full flow dilution is sampled, and improves the certainty of measurement of equipment,
And whole system is rationally distributed, attractive in appearance, compact；Measuring by CFO method, its relative error is according to the world
Current regulation≤2%；Its relative error≤5% is measured by precision balance method；Meet motorcycle emission (operating mode
Method) China's ii and ii I-stage (GB14622-2007, GB18176-2007), Europe EC and the U.S.
The measurement requirement of the standards such as EPA.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model a kind of full flow type motorcycle exhaust measures system；
In figure:
1-background gas sampling module；11-the first cleaner；12-background pump；13-the first overflow valve；14-
First gas flowmeter；15-the first magnetic valve module；16-the first pressure sensor；17-the second magnetic valve
Module；18-background gas collection bag module；2-diluted exhaust sampling module；21-final cleaner；22-sample
Air pump；23-the second overflow valve；24-the second gas flowmeter；25-the 3rd magnetic valve module；26-second
Pressure sensor；27-the 4th magnetic valve module；28-carrier gas collection bag module；3-collection bag cleans mould
Block；31-the 3rd cleaner；32-cleans pump；4-continuous sampling mouth；5-three-way magnetic valve；6-sampling pump；
61-the 3rd overflow valve；62-the 4th cleaner；63-condenser；7-gasmetry analysis module；71-NDIR
Not light splitting infrared spectrum analyser；72-CLD chemoluminescence method NOx analyzer；73-FID hydrogen flame ion
Change detector；74-gas cylinder Standard Gases；75-front panel is inserted soon；76-splits instrument；771-the first pressure regulator valve；
772-the second pressure regulator valve；781-the 5th magnetic valve module；782-the first magnetic valve；783-the second magnetic valve；
784-the 3rd magnetic valve；785-the 5th magnetic valve.
Detailed description of the invention
In order to be better understood from the utility model, below in conjunction with specific embodiments and the drawings to the utility model
Conduct further description.
With reference to Fig. 1, the technical solution adopted in the utility model is: a kind of full flow type motorcycle exhaust is measured
System, it is characterised in that: include background gas sampling module 1, diluted exhaust sampling module 2, adopt continuously
Sample mouth 4, gasmetry analysis module 7, three-way magnetic valve 5, host computer 9, described background gas sampling mould
Block 1 is connected by one end of sampling pipe with described three-way magnetic valve 5 with diluted exhaust sampling module 2,
The other two ends of described three-way magnetic valve 5 respectively with described continuous sampling mouth 4, gasmetry analysis module
7 are connected, and described gasmetry analysis module includes FID flame ionization ditector 73, CLD
Chemoluminescence method NOx analyzer 72, NDIR not light splitting infrared spectrum analyser 71, described host computer 9 points
Not with described FID flame ionization ditector 73, CLD chemoluminescence method NOx analyzer 72,
NDIR not light splitting infrared spectrum analyser 71 is connected, and described FID flame ionization ditector 73 is used for
Measuring and analyze the concentration of hydrocarbon in motorcycle exhaust, described CLD chemoluminescence method NOx analyzes
Instrument 72 analyzes the concentration of oxynitrides in motorcycle exhaust for measuring, and described NDIR not light splitting is red
Outer analysis instrument 71 is for measuring carbon monoxide, the concentration of carbon dioxide in analysis motorcycle exhaust.
Described FID flame ionization ditector 73 uses Model 600 FID of CAI company of the U.S.,
Range: 0-4ppm～100000ppm, the linearity: less than the 1% of full scale, resolution ratio: 0.01ppm,
Drift: less than 1%/24hsT90:1.5s of full scale (adjustable)；Described CLD chemoluminescence method NOx
Analyzer 72 uses the MODEL 600CLD of CAI company of the U.S., range: 4ppm～5000ppm,
The linearity: less than the 1% of full scale, resolution ratio: 0.01ppm, drift: less than full scale
1%/24hsT90:1.5s (adjustable)；Described NDIR not light splitting infrared spectrum analyser 71 uses U.S. CAI public
Department MODEL 600NDIR, range: CO:0～300,500,1500ppm, CO2: 0～
5%, 10%, 25%, the linearity: less than the 0.5% of full scale, resolution ratio: 0.01ppm T90:1.5s (can
Adjust).
Described background gas sampling module 1 include the first cleaner 11, background pump the 12, first overflow valve 13,
First gas flowmeter the 14, first magnetic valve module the 15, first pressure sensor the 16, second magnetic valve
Module 17, background gas collection bag module 18.
Described first magnetic valve module the 15, second magnetic valve module 17 includes multiple magnetic valve, institute respectively
State background gas collection bag module 18 and include that multiple background gas gathers airbag.
Described diluted exhaust sampling module 2 includes final cleaner 21, sample gas pump the 22, second overflow valve
23, second gas flowmeter the 24, the 3rd magnetic valve module the 25, second pressure sensor the 26, the 4th electricity
Magnet valve module 27, carrier gas collection bag module 28, described diluted exhaust sampling module 2 is used for gathering entirely
Diluted stream gas.
Described 3rd magnetic valve module the 25, the 4th magnetic valve module 27 includes multiple magnetic valve respectively, institute
State carrier gas collection bag module 28 and include that multiple carrier gas gathers airbag.
Described full flow type motorcycle exhaust is measured system and is also included collection bag cleaning module 3, described collection bag
Cleaning module 3 includes the 3rd cleaner 31, cleans pump 32.
Sampling pump the 6, the 3rd it is additionally provided with between described three-way magnetic valve 5 and gasmetry analysis module 7
Overflow valve the 61, the 4th cleaner 62, described 4th cleaner 62 and infrared point of described NDIR not light splitting
Condenser 63 it is additionally provided with between analyzer.
Described gasmetry analysis module 7 also includes gas analyzer demarcating module, described gas analyzer
Demarcating module include splitting instrument 76, front panel insert 75 soon, gas cylinder Standard Gases 74, be used for demarcating described FID
Flame ionization ditector 73, CLD chemoluminescence method NOx analyzer 72, NDIR not light splitting are red
Outer analysis instrument 71, described segmentation instrument 76 is connected with described host computer 9.
Described gasmetry analysis module 7 also includes multiple pressure regulator valve, multiple magnetic valve.
Described full flow type motorcycle exhaust is measured system and is also included communication module 8, described communication module 8 one
End is connected with described host computer 9, the other end and described first pressure sensor the 16, second pressure sensing
Device 26 and multiple magnetic valve are connected.
The course of work of the present utility model is as follows: the utility model in use, is divided into sampling, sample gas to divide
Analysis, continuous sampling analysis.Wherein sampling is divided into the sampling of background airbag and diluted exhaust bag sampling, sample
Gas analysis is divided into background sample gas to analyze, diluted exhaust sample gas is analyzed, continuous sampling analysis.
Background airbag sampling flow process: when background pump 12 works, background gas (air) is through the first filtering
Device the 11, first overflow valve the 13, first gas flowmeter the 14, first magnetic valve module the 15, second electromagnetism
Valve module 17 enters the background gas collection airbag that background gas gathers in airbag module 18.
Diluted exhaust bag sampling flow process: diluted exhaust when sample gas pump 22 works, after Full flow dilution
Through final cleaner the 21, second overflow valve the 23, second gas flowmeter the 24, the 3rd magnetic valve module 25,
4th magnetic valve module 27 enters the carrier gas collection airbag that carrier gas gathers in airbag module 28.
Background sample gas analysis process: sampling pump 6 works, background gas gathers a back of the body in airbag module 18
The prosperous background gas gathered in airbag is through second magnetic valve module the 17, first magnetic valve module 15, threeway
Magnetic valve 5, the 3rd overflow valve 61, the 4th cleaner 62, condenser the 63, second pressure regulator valve 772,
Five magnetic valve modules 781 enter NDIR not light splitting infrared spectrum analyser 71, by infrared point of NDIR not light splitting
CO, CO in analyzer 71 analysis background gas2Concentration；When background gas is through the first pressure regulator valve 771, second
Magnetic valve the 783, the 3rd magnetic valve 784 enters FID flame ionization ditector 73, by FID hydrogen fire
The concentration of flame ionization detector 73 analysis background hydrocarbon in gas；When background gas is through the 4th electromagnetism
Valve 785 enters CLD chemoluminescence method NOx analyzer 72, CLD chemoluminescence method NOx analyze
The concentration of oxynitrides in instrument 72 analysis background gas.
Diluted exhaust sample gas analysis process: sampling pump 6 works, carrier gas gathers in airbag module 28 one
Individual carrier gas gather diluted exhaust in airbag through the 4th magnetic valve module the 27, the 3rd magnetic valve module 25,
Three-way magnetic valve the 5, the 3rd overflow valve the 61, the 4th cleaner 62, condenser the 63, second pressure regulator valve 772,
5th magnetic valve module 781 enters NDIR not light splitting infrared spectrum analyser 71, infrared by NDIR not light splitting
Analyzer 71 analyzes CO, CO in diluted exhaust2Concentration；When diluted exhaust through the first pressure regulator valve 771,
Second magnetic valve the 783, the 3rd magnetic valve 784 enters FID flame ionization ditector 73, by FID
Flame ionization ditector 73 analyzes the concentration of hydrocarbon in diluted exhaust；When diluted exhaust warp
4th magnetic valve 785 enters CLD chemoluminescence method NOx analyzer 72, by CLD chemoluminescence method
The concentration of oxynitrides in diluted exhaust analyzed by NOx analyzer 72.
Continuous sampling analysis process: sampling pump 6 works, the diluted exhaust after Full flow dilution is through adopting continuously
Sample mouth 4, three-way magnetic valve the 5, the 3rd overflow valve the 61, the 4th cleaner 62, condenser 63, second are adjusted
Pressure valve the 772, the 5th magnetic valve module 781 enters NDIR not light splitting infrared spectrum analyser 71, by NDIR
Not light splitting infrared spectrum analyser 71 analyzes CO, CO in diluted exhaust2Concentration；Through the first pressure regulator valve 771,
Second magnetic valve the 783, the 3rd magnetic valve 784 enters FID flame ionization ditector 73, by FID
Flame ionization ditector 73 analyzes the concentration of hydrocarbon in diluted exhaust；When diluted exhaust warp
4th magnetic valve 785 enters CLD chemoluminescence method NOx analyzer 72, by CLD chemoluminescence method
The concentration of oxynitrides in diluted exhaust analyzed by NOx analyzer 72.
The utility model is in the above-mentioned course of work, and NDIR not light splitting infrared spectrum analyser 71, FID hydrogen are fiery
The data that analysis is obtained by flame ionization detector 73, CLD chemoluminescence method NOx analyzer 72 are straight
Connect and be transferred to host computer 9, realized the monitoring to data by host computer 9, recorded and process；This full flow type
First pressure sensor the 16, second pressure sensor 26 in motorcycle exhaust measurement system respectively will inspection
The background gas, the pressure data of diluted exhaust that measure send host computer 9 to by communication module 8；Upper
Machine 9 also by communication module 8 remotely control first magnetic valve module the 15, second magnetic valve module 17,
3rd magnetic valve module the 25, the 4th magnetic valve module 27, three-way magnetic valve the 5, the 5th magnetic valve module
781, first magnetic valve the 782, second magnetic valve the 783, the 3rd magnetic valve the 784, the 4th magnetic valve 785
Connecting and disconnecting.
The utility model also needs to collection bag cleaning module 3 before bag sampling and background gas is gathered airbag mould
Group 18 and carrier gas gather the collection bag of airbag module 28 and are rinsed, and the gas used by flushing process is
Through the 3rd cleaner 31 filtered air.
The utility model also need to be by segmentation instrument 76, gas cylinder Standard Gases 74, above before carrying out sampling analysis
Plate inserts 75 couples of NDIR not light splitting infrared spectrum analysers 71, FID flame ionization ditector 73, CLD soon
Chemoluminescence method NOx analyzer 72 carries out linear calibration.At linear timing signal, FID hydrogen flame ion
Zero gas changing detector 73 is AIR, and range gas is C3H8；CLD chemoluminescence method NOx analyzer
Zero gas of 72 is N2, and range gas is NO；Zero gas of NDIR not light splitting infrared spectrum analyser 71 is N2,
Range gas is CO, CO2.
More than show general principle of the present utility model, principal character and advantage of the present utility model.This
Skilled person will appreciate that of industry, the utility model is not restricted to the described embodiments, above-described embodiment
With specification described in general principle of the present utility model is simply described, without departing from the utility model essence
On the premise of god and scope, the utility model also has various changes and modifications, and these changes and improvements are all
Within falling into the patent covering scope of claimed the utility model scope.The utility model claims
Scope is defined by appending claims and equivalent thereof.
Claims (10)
- null1. a full flow type motorcycle exhaust measures system，It is characterized in that: include background gas sampling module、Diluted exhaust sampling module、Continuous sampling mouth、Gasmetry analysis module、Three-way magnetic valve、Host computer，Described background gas sampling module is connected by one end of sampling pipe with described three-way magnetic valve with diluted exhaust sampling module，The other two ends of described three-way magnetic valve respectively with described continuous sampling mouth、Gasmetry is analyzed module and is connected，Described gasmetry analysis module includes FID flame ionization ditector、CLD chemoluminescence method NOx analyzer、NDIR not light splitting infrared spectrum analyser，Described host computer respectively with described FID flame ionization ditector、CLD chemoluminescence method NOx analyzer、NDIR not light splitting infrared spectrum analyser is connected，Described FID flame ionization ditector analyzes the concentration of hydrocarbon in motorcycle exhaust for measuring，Described CLD chemoluminescence method NOx analyzer analyzes the concentration of oxynitrides in motorcycle exhaust for measuring，Described NDIR not light splitting infrared spectrum analyser is used for measuring carbon monoxide in analysis motorcycle exhaust、The concentration of carbon dioxide.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described background gas sampling module includes the first cleaner, background pump, the first overflow valve, the first gas flowmeter, the first magnetic valve module, the first pressure sensor, the second magnetic valve module, background gas collection bag module.
- A kind of full flow type motorcycle exhaust the most according to claim 2 measures system, it is characterised in that: described first magnetic valve module, the second magnetic valve module include that multiple magnetic valve, described background gas collection bag module include that multiple background gas gathers airbag respectively.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: described diluted exhaust sampling module includes that final cleaner, sample gas pump, the second overflow valve, the second gas flowmeter, the 3rd magnetic valve module, the second pressure sensor, the 4th magnetic valve module, carrier gas collection bag module, described diluted exhaust sampling module are used for gathering Full flow dilution gas.
- A kind of full flow type motorcycle exhaust the most according to claim 4 measures system, it is characterised in that: described 3rd magnetic valve module, the 4th magnetic valve module include that multiple magnetic valve, described carrier gas collection bag module include that multiple carrier gas gathers airbag respectively.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described full flow type motorcycle exhaust is measured system and is also included that collection bag cleaning module, described collection bag cleaning module include the 3rd cleaner, clean pump.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: between described three-way connection and gasmetry analysis module, be additionally provided with sampling pump, the 3rd overflow valve, the 4th cleaner, between described 4th cleaner and described NDIR not light splitting infrared spectrum analyser, be additionally provided with condenser.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterized in that: described gasmetry analysis module also includes gas analyzer demarcating module, described gas analyzer demarcating module includes splitting instrument, front panel slotting, gas cylinder Standard Gases soon, for demarcating described FID flame ionization ditector, CLD chemoluminescence method NOx analyzer, NDIR not light splitting infrared spectrum analyser, described segmentation instrument is connected with described host computer.
- A kind of full flow type motorcycle exhaust the most according to claim 1 measures system, it is characterised in that: described gasmetry analysis module also includes multiple pressure regulator valve, multiple magnetic valve.
- 10. measure system according to a kind of full flow type motorcycle exhaust described in claim 1-4, it is characterized in that: described full flow type motorcycle exhaust is measured system and also included communication module, described communication module one end is connected with described host computer, and the other end is connected with described first pressure sensor, the second pressure sensor and multiple magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082357.3U CN205538815U (en) | 2016-01-27 | 2016-01-27 | Full flow type motorcycle exhaust measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620082357.3U CN205538815U (en) | 2016-01-27 | 2016-01-27 | Full flow type motorcycle exhaust measurement system |
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| Publication Number | Publication Date |
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| CN205538815U true CN205538815U (en) | 2016-08-31 |
Family
ID=56772198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620082357.3U Expired - Fee Related CN205538815U (en) | 2016-01-27 | 2016-01-27 | Full flow type motorcycle exhaust measurement system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991289A (en) * | 2017-12-31 | 2019-07-09 | 中国人民解放军63653部队 | The electrochemical sensor device of high concentration CO is measured by dilution process |
| CN111504735A (en) * | 2020-06-09 | 2020-08-07 | 天津内燃机研究所（天津摩托车技术中心） | Low CO generator set emission test system and test method |
| CN114924040A (en) * | 2022-05-19 | 2022-08-19 | 厦门海腾发动机测试设备有限公司 | Automatic switching and sampling tube purifying device for multi-concentration calibration gas of tail gas analyzer |
-
2016
- 2016-01-27 CN CN201620082357.3U patent/CN205538815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109991289A (en) * | 2017-12-31 | 2019-07-09 | 中国人民解放军63653部队 | The electrochemical sensor device of high concentration CO is measured by dilution process |
| CN111504735A (en) * | 2020-06-09 | 2020-08-07 | 天津内燃机研究所（天津摩托车技术中心） | Low CO generator set emission test system and test method |
| CN114924040A (en) * | 2022-05-19 | 2022-08-19 | 厦门海腾发动机测试设备有限公司 | Automatic switching and sampling tube purifying device for multi-concentration calibration gas of tail gas analyzer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20170127 |