CN107271175A - A kind of detection means and detection method of ammonia metering valve - Google Patents
A kind of detection means and detection method of ammonia metering valve Download PDFInfo
- Publication number
- CN107271175A CN107271175A CN201710616730.8A CN201710616730A CN107271175A CN 107271175 A CN107271175 A CN 107271175A CN 201710616730 A CN201710616730 A CN 201710616730A CN 107271175 A CN107271175 A CN 107271175A
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- CN
- China
- Prior art keywords
- ammonia
- metering valve
- gas
- gas rail
- ammonia metering
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 266
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 132
- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 230000005619 thermoelectricity Effects 0.000 claims 1
- 238000000105 evaporative light scattering detection Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses a kind of detection means of ammonia metering valve, gas rail including ammonia can be accommodated, the air intake of gas rail is connected by magnetic valve with source of the gas, the gas outlet of gas rail is connected with ammonia metering valve, gas rail is provided with the pressure sensor and temperature sensor for being respectively used to measure its air pressure inside and temperature, also include controller, controller is connected with magnetic valve, pressure sensor, temperature sensor and ammonia metering valve；By controller intelligent control, calculate before and after the injection of ammonia metering valve the of poor quality of ammonia in gas rail and do ratio with its injecting times, obtain the single injection amount of ammonia metering valve, measuring speed is fast, precision is high, and it is easily controllable, high precision test of the ammonia metering valve under different duty can be realized, is adapted to the mass detection of ammonia metering valve.The invention also discloses a kind of detection method being adapted with above-mentioned detection device.
Description
Technical field
The present invention relates to ammonia metering valve detection field, more particularly to a kind of detection means of ammonia metering valve.In addition,
The invention further relates to the detection method that a kind of use above-mentioned detection device detects ammonia metering valve.
Background technology
In the electric-controlling injection system of vehicle exhaust is handled by reducing agent of solid ammonia, to ensure ammonia metering valve in injection
During actual ejection amount and setting emitted dose match, it is ensured that the accuracy of whole system, it is necessary to ammonia metering valve compared with
Small dutycycle and it is measured compared with the flow in the case of big space rate.
At present, the method for measuring to ammonia metering valve flow is usually that ammonia metering valve is connected into test fixture, will be flowed
Gauge is connected with tested ammonia metering valve, and the pattern added up with flowmeter measures ammonia metering valve in smaller dutycycle, larger
Dutycycle sprays the quality of a period of time, is then divided by with the cumulative time, to calculate single injection amount.But this measurement side
Method, cumbersome, time-consuming, the accuracy for measuring single injection amount is limited to flowmeter accuracy, and flowmeter accuracy is higher
Price is more expensive, and limited precision, it is impossible to reach precision prescribed.
Therefore it is how quick, efficiently and accurately determine ammonia metering valve flow, be that those skilled in the art need solution at present
Technical problem certainly.
The content of the invention
It is an object of the invention to provide a kind of detection means of ammonia metering valve, its can quickly, efficiently and accurately determine ammonia
Gas metering valve flow.It is a further object of the present invention to provide a kind of detection method of ammonia metering valve.
In order to solve the above technical problems, the present invention provides a kind of detection means of ammonia metering valve, including ammonia can be accommodated
The gas rail of gas, the air intake of the gas rail is connected by magnetic valve with source of the gas, and gas outlet and the ammonia metering valve of the gas rail connect
Connect, the gas rail is provided with the pressure sensor and temperature sensor for being respectively used to measure its air pressure inside and temperature, in addition to
Controller, the controller and the magnetic valve, the pressure sensor, the temperature sensor and the ammonia metering valve are equal
It is connected.
Preferably, the controller is provided with control panel and the display panel for showing testing result.
Preferably, the temperature sensor is thermocouple.
Preferably, in addition to for measuring the flowmeter of the ammonia metering valve emitted dose, the flowmeter is located at described
The port of export of ammonia metering valve.
The present invention also provides a kind of detection method of ammonia metering valve, including step：
The magnetic valve of gas rail arrival end is opened, ammonia is filled into the gas rail by source of the gas；
When the air pressure inside of the gas rail reaches preset pressure, magnetic valve is closed；
The air pressure and temperature inside presently described gas rail are obtained, the ammonia quality in presently described gas rail is calculated；
Control after the default injecting times of ammonia metering valve injection, close the ammonia metering valve；
Air pressure and temperature inside the gas rail after injection are obtained, remaining ammonia quality in the gas rail is calculated；
Calculate before and after ammonia metering valve injection the of poor quality of ammonia in the gas rail, calculate it is described it is of poor quality with it is described
The ratio of ammonia metering valve injecting times, obtains the single injection amount of the ammonia metering valve.
Preferably, the magnetic valve of gas rail arrival end is opened, is filled by source of the gas into the gas rail before ammonia, in addition to is entered
Setting pattern, inputs the default injecting times of the preset pressure and the ammonia metering valve.
The detection means for the ammonia metering valve that the present invention is provided, by controller intelligent control, calculates the spray of ammonia metering valve
Penetrate the of poor quality of ammonia in front and rear gas rail and done with its injecting times and compared, obtain the single injection amount of ammonia metering valve, measurement speed
Degree is fast, precision is high and easily controllable, can realize high precision test of the ammonia metering valve under different duty, is adapted to ammonia
The mass detection of metering valve.
The detection method that the present invention is provided, it is corresponding with above-mentioned detection device, it is the detection means provided by the present invention
The detection method of realization, because above-mentioned detection device has above-mentioned technique effect, above-mentioned detection method should also have same skill
Art effect, is no longer discussed in detail herein.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the detection means of ammonia metering valve provided by the present invention
Figure.
Embodiment
The present invention core be to provide a kind of detection means of ammonia metering valve, its can quickly, efficiently and accurately determine ammonia
Gas metering valve flow.Another core of the present invention is to provide a kind of detection method of ammonia metering valve.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 is refer to, Fig. 1 is a kind of embodiment of the detection means of ammonia metering valve provided by the present invention
Structural representation.
The specific embodiment of the invention provide ammonia metering valve detection means, including switchable control magnetic valve 1,
Ammonia metering valve 3, the gas rail 2 with temperature sensor 4 and pressure sensor 5, and controller 6, the air intake of gas rail 2 pass through
Magnetic valve 1 is connected with source of the gas, and the gas outlet of gas rail 2 is connected with ammonia metering valve 3, closed appearance of the gas rail 2 equivalent to fixed volume
Device, pressure sensor 5 can measure the gas pressure inside gas rail 2, and temperature sensor 4 can measure the temperature inside gas rail 2,
Magnetic valve 1, ammonia metering valve 3, pressure sensor 5 and temperature sensor 4 are directly connected with controller 6.
During detection, the magnetic valve 1 at the air intake of gas rail 2 is opened, gas rail 2 is inflated, controller 6 by installed in
Pressure sensor 5 on gas rail 2 obtains the internal gas pressure value of gas rail 2, reaches after preset pressure value, closes the air intake of gas rail 2
The magnetic valve 1 at place；Controller 6 obtains current gas rail 2 by the pressure sensor 5 and temperature sensor 4 on gas rail 2
The pressure and temperature of internal gas；It can be calculated according to the pressure and temperature of the volume of gas rail 2, ammonia total in current gas rail 2
Ammonia quality；Calculating terminates, and controller 6 exports the smaller dutycycle of certain number of times to control ammonia metering valve 3 to be sprayed；
AEI After End of Injection, controller 6 directly closes ammonia metering valve 3, is passed by the pressure sensor 5 on gas rail 2 and temperature
Sensor 4 come obtain injection after the internal ammonia pressure and temperature of gas rail 2, ammonia residual mass meter in promoting the circulation of qi rail 2 is then entered again
Calculate；Finally calculate ammonia metering valve 3 and spray the of poor quality of front and rear the internal ammonia of gas rail 2, and this is of poor quality with ammonia metering valve 3
Injecting times, which are done, to be compared, and is as a result the single injection amount under the smaller dutycycle of ammonia metering valve 3.Ammonia metering valve 3 is larger to be accounted for
The test of the single injection amount of empty ratio is repeated no more herein as the test process of smaller dutycycle.
The detection means for the ammonia metering valve that the present invention is provided, by the intelligent control of controller 6, calculates ammonia metering valve 3
Ammonia of poor quality and being done with its injecting times compares in gas rail 2 before and after injection, obtains the single injection amount of ammonia metering valve 3, surveys
Amount speed is fast, precision is high and easily controllable, can realize high precision test of the ammonia metering valve 3 under different duty, is adapted to
The mass detection of ammonia metering valve 3.
The detection means for the ammonia metering valve that the specific embodiment of the invention is provided, can be provided with control on controller 6
Panel, control panel is specifically as follows control button, to facilitate the control to each part, before detection, can pass through chain of command
Need the preset pressure reached before plate input ammonia metering valve 3 sprays inside gas rail 2, and ammonia metering valve 3 injecting times,
It is simple and convenient.
Further, observe and record for convenience of testing staff and be also provided with being used to show on testing result, controller 6
The display panel of testing result, the i.e. single injection amount of ammonia metering valve 3 can be directly displayed on a display panel；In addition, inspection
During survey, pressure and temperature, ammonia metering valve 3 inside gas rail 2 spray the parameter such as quality of ammonia in front and rear gas rail 2
To show on a display panel, to facilitate testing staff to understand detection procedure.
Specifically, the detection means for the ammonia metering valve that the specific embodiment of the invention is provided, temperature sensor 4 can be
Thermocouple, thermocouple structure is simple, and precision is high, without additional power source during measurement, can accurately measure temperature in gas rail 2；Certainly,
Can also be from other kinds of temperature sensors 4 such as thermistor (temperature) sensors, also within protection scope of the present invention.
On the basis of above-mentioned each embodiment, the detection for the ammonia metering valve that the specific embodiment of the invention is provided
Device, can also include flowmeter, and flowmeter is specifically located at the port of export of ammonia metering valve 3, and ammonia meter is measured by flowmeter
The gross mass of the multi-injection of valve 3 is measured, then does and compares with injecting times, the single injection amount of ammonia metering valve 3 can be also obtained, but it is such a
Metering system precision is limited by flowmeter accuracy, it is of course also possible to not incoming stream gauge, also protection scope of the present invention it
It is interior.
The embodiment of the present invention additionally provides the detection method being adapted with above-mentioned detection device, including step：
The magnetic valve 1 of the arrival end of gas rail 2 is opened, ammonia is filled into gas rail 2 by source of the gas；
When the air pressure inside of gas rail 2 reaches preset pressure, magnetic valve 1 is closed；
The air pressure and temperature inside current gas rail 2 are obtained, the ammonia quality in current gas rail 2 is calculated；
Control ammonia metering valve 3 to spray after default injecting times, close ammonia metering valve 3；
Air pressure and temperature inside gas rail 2 after injection are obtained, remaining ammonia quality in gas rail 2 is calculated；
Calculate ammonia metering valve 3 and spray the of poor quality of ammonia in front and rear gas rail 2, calculating is of poor quality to spray with ammonia metering valve 3
The ratio of number of times is penetrated, the single injection amount of ammonia metering valve 3 is obtained.
In above-mentioned detection method, obtain after the air pressure and temperature inside current gas rail 2, can first be recorded, in ammonia
After gas metering valve 3 sprays, then the calculating of ammonia quality in front and rear gas rail 2 is sprayed, also within protection scope of the present invention.
The detection method for the ammonia metering valve 3 that the present invention is provided, is sprayed in front and rear gas rail 2 by calculating ammonia metering valve 3
Ammonia of poor quality and being done with its injecting times compares, and obtains the single injection amount of ammonia metering valve 3, measuring speed is fast, precision is high,
And it is easily controllable, high precision test of the ammonia metering valve 3 under different duty can be realized, is adapted to the big of ammonia metering valve 3
Batch detection.
On the basis of above-mentioned embodiment, before detection ammonia metering valve 3, that is, the arrival end of gas rail 2 is being opened
Magnetic valve 1, ammonia is filled into gas rail 2 before this by source of the gas, in addition to enters Setting pattern, input preset pressure and ammonia metering valve
3 default injecting times, in detection process, default pressure is reached when filling air pressure in ammonia to gas rail 2 into gas rail 2 by source of the gas
During force value, controller 6 automatically controls magnetic valve 1 and closed, after controlling the injection of ammonia metering valve 3 to preset injecting times, controller 6
Ammonia metering valve 3 is automatically controlled to close.
Specifically, can be inputted by the control panel on controller before ammonia metering valve 3 sprays needs to reach inside gas rail 2
The preset pressure arrived, and ammonia metering valve 3 injecting times, it is simple and convenient.
The detection means and method to ammonia metering valve provided by the present invention are described in detail above.Herein should
The principle and embodiment of the present invention are set forth with specific case, the explanation of above example is only intended to help and managed
Solve the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not departing from
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this hair
In bright scope of the claims.
Claims (6)
1. a kind of detection means of ammonia metering valve, it is characterised in that the gas rail including that can accommodate ammonia, the gas rail enters
Gas port is connected by magnetic valve with source of the gas, and the gas outlet of the gas rail is connected with ammonia metering valve, and the gas rail is provided with difference
Pressure sensor and temperature sensor for measuring its air pressure inside and temperature, in addition to controller, the controller and institute
Magnetic valve, the pressure sensor, the temperature sensor is stated with the ammonia metering valve to be connected.
2. the detection means of ammonia metering valve according to claim 1, it is characterised in that the controller is provided with control
Panel and the display panel for showing testing result.
3. the detection means of ammonia metering valve according to claim 2, it is characterised in that the temperature sensor is thermoelectricity
It is even.
4. the detection means of ammonia metering valve according to claim 1, it is characterised in that also including for measuring the ammonia
The flowmeter of gas metering valve emitted dose, the flowmeter is located at the port of export of the ammonia metering valve.
5. a kind of detection method of ammonia metering valve, it is characterised in that including step：
The magnetic valve of gas rail arrival end is opened, ammonia is filled into the gas rail by source of the gas；
When the air pressure inside of the gas rail reaches preset pressure, magnetic valve is closed；
The air pressure and temperature inside presently described gas rail are obtained, the ammonia quality in presently described gas rail is calculated；
Control after the default injecting times of ammonia metering valve injection, close the ammonia metering valve；
Air pressure and temperature inside the gas rail after injection are obtained, remaining ammonia quality in the gas rail is calculated；
The of poor quality of ammonia in the gas rail is calculated before and after ammonia metering valve injection, calculates described of poor quality with the ammonia
The ratio of metering valve injecting times, obtains the single injection amount of the ammonia metering valve.
6. the detection method of ammonia metering valve according to claim 5, it is characterised in that
The magnetic valve of gas rail arrival end is opened, is filled by source of the gas into the gas rail before ammonia, in addition to enters Setting pattern, it is defeated
Enter the default injecting times of the preset pressure and the ammonia metering valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616730.8A CN107271175A (en) | 2017-07-24 | 2017-07-24 | A kind of detection means and detection method of ammonia metering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616730.8A CN107271175A (en) | 2017-07-24 | 2017-07-24 | A kind of detection means and detection method of ammonia metering valve |
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| Publication Number | Publication Date |
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| CN107271175A true CN107271175A (en) | 2017-10-20 |
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|---|---|---|---|
| CN201710616730.8A Pending CN107271175A (en) | 2017-07-24 | 2017-07-24 | A kind of detection means and detection method of ammonia metering valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101194215A (en) * | 2005-06-06 | 2008-06-04 | 喜开理株式会社 | Flow rate control device absolute flow rate check system |
| CN103364661A (en) * | 2013-07-09 | 2013-10-23 | 镇江恒驰科技有限公司 | Device for testing performance of natural gas injection electromagnetic valve and testing method of device |
| CN105863920A (en) * | 2016-03-31 | 2016-08-17 | 江苏大学 | Calibration device and method for high-pressure natural gas injector |
| CN206339274U (en) * | 2016-12-20 | 2017-07-18 | 西华大学 | Gas intermittent injection quantity measuring device and gas intermittent injection quantity measuring system |
| CN207050971U (en) * | 2017-07-24 | 2018-02-27 | 吉林省众鑫汽车装备有限公司 | A kind of detection means of ammonia metering valve |
-
2017
- 2017-07-24 CN CN201710616730.8A patent/CN107271175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101194215A (en) * | 2005-06-06 | 2008-06-04 | 喜开理株式会社 | Flow rate control device absolute flow rate check system |
| CN103364661A (en) * | 2013-07-09 | 2013-10-23 | 镇江恒驰科技有限公司 | Device for testing performance of natural gas injection electromagnetic valve and testing method of device |
| CN105863920A (en) * | 2016-03-31 | 2016-08-17 | 江苏大学 | Calibration device and method for high-pressure natural gas injector |
| CN206339274U (en) * | 2016-12-20 | 2017-07-18 | 西华大学 | Gas intermittent injection quantity measuring device and gas intermittent injection quantity measuring system |
| CN207050971U (en) * | 2017-07-24 | 2018-02-27 | 吉林省众鑫汽车装备有限公司 | A kind of detection means of ammonia metering valve |
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Effective date of registration: 20210713 Address after: Room 5128, Huada Tianshi innovation and service center, intersection of Xinxiu street and Dashun Road, Kuancheng District, Changchun City, Jilin Province Applicant after: Kelin Lantai Environmental Technology (Changchun) Co.,Ltd. Address before: 136100 No.1 Chuangye street, Gongzhuling Economic Development Zone, Siping City, Jilin Province Applicant before: JILIN ZHONGXIN AUTO EQUIPMENT Co.,Ltd. |
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