CN103926070B - Band position feedback type EGR valve response time proving installation - Google Patents
Band position feedback type EGR valve response time proving installation Download PDFInfo
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- CN103926070B CN103926070B CN201410171229.1A CN201410171229A CN103926070B CN 103926070 B CN103926070 B CN 103926070B CN 201410171229 A CN201410171229 A CN 201410171229A CN 103926070 B CN103926070 B CN 103926070B
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Abstract
The invention discloses a kind of band position feedback type EGR valve response time proving installation, comprise cabinet, cabinet is provided with workbench, be provided with support in cabinet and place the cavity of vacuum pump; Described workbench is provided with display screen, power adjustment switch, dutycycle exports size gauge tap, electric EGR valve tests start button, pneumatic EGR valve tests start button, vacuum tightness size control handle and electric EGR valve interface and pneumatic EGR valve interface; Support in described cabinet is provided with regulated power supply, computer board, voltage signal acquisition card and vacuum governor.The present invention by all relevant wire harness and integration of equipments on a monitor station, avoid experimenter in experimentation, carry out loaded down with trivial details wire harness, the connection of equipment and replacing, handled easily, observation, comparison and analysis, reduce misoperation rate, improve work efficiency.
Description
Technical field
The present invention relates to a kind of pick-up unit in engine exhaust emission control device technical field, particularly engine exhaust emission recirculating system.
Background technology
EGR valve in engine exhaust-gas recirculating system (egr system) is mainly used in the flow of regulable control EGR gas, electric EGR valve is by the aperture size of inner DC MOTOR CONTROL air intake opening, and pneumatic EGR valve is then control to be applied to the vacuum tightness of EGR valve thus the aperture size of control EGR valve by vacuum governor.Two kinds of EGR valve all regulate exhaust gas flow in respective mode, return cylinder and carry out recycle after waste gas is mixed by a certain percentage with fresh air, to reduce combustor inner cylinder temperature and burning rate, further thus reduce the discharge capacity of NOX.For pneumatic EGR valve, electric EGR valve has fast response time, can adapt to the feature of high-frequency operating mode switching, and electric EGR valve can also solve the advantage that some vehicle does not have vacuum source; Compare electric EGR valve, pneumatic EGR valve then has good stability, can be applicable to the advantage of various mal-condition.
When along with current emissions laws and regulations requirement increasingly stringent, EGR valve is as the critical component of exhaust emissions, it is also more and more stricter to the requirement of precision, therefore EGR valve needs through strict detection to guarantee to meet user demand before dispatching from the factory, open and close response time test wherein for EGR valve is then the most important thing of EGR valve electric property, but at present in the process detecting the EGR valve response time, need to adopt special wire harness to connect power supply, computer board and apparatus such as computer, to realize the detection to the electric EGR valve response time, plug due to electric EGR valve is that Electric Machine Control and position are fed back and integrated, wiring error will be caused if therefore careless slightly when wiring, not only cannot detect electric EGR valve, and there is the situation generation burning out electric EGR valve.And when testing pneumatic EGR valve, also need connection vacuum pump and vacuum governor to be used for regulating the size of vacuum tightness, therefore need ceaselessly to change wire harness and testing apparatus in testing process, then reconnect, detect again, cause testing process complicated operation, detection time is longer, can not ensure the degree of accuracy of testing.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of simple to operate, be convenient to device that the carrying out of EGR valve response time is detected, reduce misoperation rate further, improve measuring accuracy and work efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Band position feedback type EGR valve response time proving installation, comprise cabinet, the top end face of cabinet is provided with workbench, is provided with the support placing electric controling part and the cavity placing vacuum pump in cabinet; Described workbench comprises the operating platform of level and the display platform of setting, the display platform erect is provided with display screen, the operating platform of level is provided with power adjustment switch, dutycycle exports size gauge tap, electric EGR valve tests start button, pneumatic EGR valve tests start button, vacuum tightness size control handle and electric EGR valve interface and pneumatic EGR valve interface; Support in described cabinet is provided with regulated power supply, computer board, voltage signal acquisition card and vacuum governor;
The output terminal of described regulated power supply is connected with the power input of computer board and voltage signal acquisition card respectively through power adjustment switch, and the signal output part of computer board and voltage signal acquisition card is respectively by data line and display screen; The input end of described computer board also exports size gauge tap with dutycycle and is connected; One road output terminal of described computer board is connected with electric EGR valve interface through electric EGR valve test start button, electric EGR valve interface is for connecting the input end of motor of electric EGR valve, and the position transducer of electric EGR valve connects the signal input part of voltage signal acquisition card by data line; Another road output terminal of described computer board is connected with the input end of vacuum governor through pneumatic EGR valve test start button, the output terminal of vacuum governor connects pneumatic EGR valve interface, pneumatic EGR valve interface is for connecting the vacuum input of pneumatic EGR valve, and the position transducer of pneumatic EGR valve connects the signal input part of voltage signal acquisition card by data line; Described vacuum governor input end also connects vacuum pump through vacuum tightness size control handle.
Owing to have employed above technical scheme, the invention technological progress is as follows.
The present invention is integrated in same casing by what be used for detecting all kinds of electronic, pneumatic EGR valve response time pick-up unit, the dutycycle voltage swing that computer board can export to EGR valve according to the demand modeling of testing crew, voltage signal acquisition card collects the voltage signal that EGR valve position transducer feeds back, voltage signal must increase along with the increase of aperture is also linear accordingly, voltage signal is transferred to display screen showing in graph form, obtains switching response time of EGR valve by the width of test curve.The present invention by all relevant wire harness and integration of equipments on a monitor station, avoid experimenter in experimentation, carry out loaded down with trivial details wire harness, the connection of equipment and replacing, handled easily, observation, comparison and analysis, reduce misoperation rate, improve work efficiency.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Wherein: 1. display screen, 2. regulated power supply, 3. power adjustment switch, 4. computer board, 5. voltage signal acquisition card, 6. dutycycle exports size control handle, 7. electric EGR valve test start button, 8. pneumatic EGR valve test start button, 9. vacuum governor, 10. vacuum pump, 11. vacuum tightness size control handles, 12. pneumatic EGR valve interfaces, 13. electric EGR valve interfaces.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
Band position feedback type EGR valve response time proving installation, comprise cabinet, the top end face of cabinet is provided with workbench, is provided with the support placing electric controling part and the cavity placing vacuum pump in cabinet.
Described workbench comprises the operating platform of level and the display platform of setting, and display platform adopts and is obliquely installed, and the angle between operating platform can arrange 45 ° ~ 60 °, observes and operate to facilitate experimenter.
Display platform is provided with display screen 1, for show current export to detected EGR valve dutycycle voltage and the response time curve that feeds back to of detected EGR valve, the size curve facilitating experimenter to open according to detected EGR valve calculates the switching response time.
The operating platform of level is provided with power adjustment switch 3, dutycycle exports size gauge tap 6, electric EGR valve tests start button 7, pneumatic EGR valve tests start button 8, vacuum tightness size control handle 11 and electric EGR valve interface 13 and pneumatic EGR valve interface 12.Experimenter is facilitated to select to operate corresponding button according to detected EGR valve.
Support in cabinet is provided with regulated power supply 2, computer board 4, voltage signal acquisition card 5 and vacuum governor 9, vacuum pump 10 is installed in the inner chamber of cabinet.
In the present invention, the annexation of each parts as shown in Figure 1.Wherein the output terminal of regulated power supply 2 is connected with the power input of computer board 4 and voltage signal acquisition card 5 respectively through power adjustment switch 3, for providing working power for computer board 4 and voltage signal acquisition card 5; The signal output part of computer board 4 and voltage signal acquisition card 5 is respectively by data line and display screen 1, the current dutycycle voltage transmission exporting to detected EGR valve shows to display screen by computer board 4, and the response time curve transmission that the detected EGR valve gathered feeds back to shows to display screen by voltage signal acquisition card 5.The input end of computer board 4 also exports size gauge tap 6 with dutycycle and is connected, for receiving the required duty cycle control signal of experiment.
The control signal output terminal of computer board 4 is provided with two-way, is respectively used to control electric EGR valve and pneumatic EGR valve.Wherein a road output terminal is connected with electric EGR valve interface 13 through electric EGR valve test start button 7, electric EGR valve interface 13 is for connecting the input end of motor of electric EGR valve, and the position transducer of electric EGR valve connects the signal input part of voltage signal acquisition card 5 by data line.Another road is connected with the input end of vacuum governor 9 through pneumatic EGR valve test start button 8, the output terminal of vacuum governor 9 connects pneumatic EGR valve interface 12, pneumatic EGR valve interface 12 is for connecting the vacuum input of pneumatic EGR valve, and the position transducer of pneumatic EGR valve connects the signal input part of voltage signal acquisition card 5 by data line; Vacuum governor 9 input end also connects vacuum pump 10 through vacuum tightness size control handle 11.
When the present invention is for testing electric EGR valve, the motor of electric EGR valve to be detected is connected on electric EGR valve interface, press electric EGR valve test start button 7, export size gauge tap 6 to computer board input duty cycle voltage control signal by dutycycle, computer board according to dutycycle voltage control signal to electric EGR valve output duty cycle voltage to be detected; Electric EGR valve to be detected is opened after receiving signal; 5, voltage signal acquisition card can the unlatching curve of Real-time Collection electric EGR valve to be detected, and is shown by display screen.
When the present invention is for testing pneumatic EGR valve, the motor of pneumatic EGR valve to be detected is connected on pneumatic EGR valve interface, press pneumatic EGR valve test start button, export size gauge tap 6 to computer board input duty cycle voltage control signal by dutycycle, computer board according to dutycycle voltage control signal to vacuum governor output duty cycle voltage; Open vacuum tightness size control handle 11, vacuum pump provides vacuum to vacuum governor, and vacuum governor flows to the vacuum of pneumatic EGR valve to be detected according to dutycycle Control of Voltage, thus controls the aperture of pneumatic EGR valve.5, voltage signal acquisition card can the unlatching curve of Real-time Collection pneumatic EGR valve to be detected, and is shown by display screen.
In the present invention, display screen can demonstrate the sensor voltage curve of current dutycycle voltage swing, vacuum tightness size and EGR valve simultaneously, the horizontal ordinate of curve is set to the time, the width changed by experiment curv, thus the response time drawing threshold switch.The present invention can test from percent of 0%-100% or 100%-0% or any one demand how much to the response time of percent how many aperture.
Claims (1)
1. be with position feedback type EGR valve response time proving installation, it is characterized in that: comprise cabinet, the top end face of cabinet is provided with workbench, is provided with the support placing electric controling part and the cavity placing vacuum pump in cabinet;
Described workbench comprises the operating platform of level and the display platform of setting, the display platform erect is provided with display screen (1), the operating platform of level is provided with power adjustment switch (3), dutycycle exports size gauge tap (6), electric EGR valve tests start button (7), pneumatic EGR valve tests start button (8), vacuum tightness size control handle (11) and electric EGR valve interface (13) and pneumatic EGR valve interface (12);
Support in described cabinet is provided with regulated power supply (2), computer board (4), voltage signal acquisition card (5) and vacuum governor (9);
The output terminal of described regulated power supply (2) is connected with the power input of computer board (4) and voltage signal acquisition card (5) respectively through power adjustment switch (3), and computer board (4) is connected with display screen (1) respectively by data line with the signal output part of voltage signal acquisition card (5);
The input end of described computer board (4) also exports size gauge tap (6) and is connected with dutycycle;
One road output terminal of described computer board (4) is tested start button (7) through electric EGR valve and is connected with electric EGR valve interface (13), electric EGR valve interface (13) is for connecting the input end of motor of electric EGR valve, and the position transducer of electric EGR valve connects the signal input part of voltage signal acquisition card (5) by data line;
Another road output terminal of described computer board (4) is connected with the input end of vacuum governor (9) through pneumatic EGR valve test start button (8), the output terminal of vacuum governor (9) connects pneumatic EGR valve interface (12), pneumatic EGR valve interface (12) is for connecting the vacuum input of pneumatic EGR valve, and the position transducer of pneumatic EGR valve connects the signal input part of voltage signal acquisition card (5) by data line; Described vacuum governor (9) input end also connects vacuum pump (10) through vacuum tightness size control handle (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410171229.1A CN103926070B (en) | 2014-04-25 | 2014-04-25 | Band position feedback type EGR valve response time proving installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410171229.1A CN103926070B (en) | 2014-04-25 | 2014-04-25 | Band position feedback type EGR valve response time proving installation |
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| CN103926070A CN103926070A (en) | 2014-07-16 |
| CN103926070B true CN103926070B (en) | 2016-03-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203320A (en) * | 2015-11-13 | 2015-12-30 | 无锡隆盛科技股份有限公司 | Response time detection device of non-position-feedback type EGR valve |
| CN106050486A (en) * | 2016-08-01 | 2016-10-26 | 无锡隆盛科技股份有限公司 | EGR valve opening force detection device |
| CN107202691A (en) * | 2017-08-03 | 2017-09-26 | 深圳市山水动力科技有限公司 | EGR valve detector |
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| CN201273863Y (en) * | 2008-07-25 | 2009-07-15 | 浙江大学 | Waste gas recirculation valve and coolers combined experiment apparatus |
| JP2013036749A (en) * | 2011-08-03 | 2013-02-21 | Fuji Heavy Ind Ltd | Failure diagnosis device of electromagnetic driving type control valve |
| CN103335859A (en) * | 2013-06-27 | 2013-10-02 | 新昌县瑞宏自动化设备有限公司 | Electrical control type EGR valve performance testing table |
| CN203824747U (en) * | 2014-04-25 | 2014-09-10 | 无锡隆盛科技股份有限公司 | Response time testing device with position feedback EGR valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100058795A (en) * | 2008-11-25 | 2010-06-04 | 한국델파이주식회사 | Hall type position sensor and exhaust gas recirculation valve comprising the same |
| CN201673042U (en) * | 2010-05-07 | 2010-12-15 | 无锡隆盛科技有限公司 | System detection table for vacuum regulator |
| CN103196662B (en) * | 2013-03-20 | 2015-04-15 | 无锡隆盛科技股份有限公司 | Endurance test device used for exhaust gas recirculation (EGR) valve |
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- 2014-04-25 CN CN201410171229.1A patent/CN103926070B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201273863Y (en) * | 2008-07-25 | 2009-07-15 | 浙江大学 | Waste gas recirculation valve and coolers combined experiment apparatus |
| JP2013036749A (en) * | 2011-08-03 | 2013-02-21 | Fuji Heavy Ind Ltd | Failure diagnosis device of electromagnetic driving type control valve |
| CN103335859A (en) * | 2013-06-27 | 2013-10-02 | 新昌县瑞宏自动化设备有限公司 | Electrical control type EGR valve performance testing table |
| CN203824747U (en) * | 2014-04-25 | 2014-09-10 | 无锡隆盛科技股份有限公司 | Response time testing device with position feedback EGR valve |
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