CN103926070A - EGR valve response time testing device in position feedback type - Google Patents
EGR valve response time testing device in position feedback type Download PDFInfo
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- CN103926070A CN103926070A CN201410171229.1A CN201410171229A CN103926070A CN 103926070 A CN103926070 A CN 103926070A CN 201410171229 A CN201410171229 A CN 201410171229A CN 103926070 A CN103926070 A CN 103926070A
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- egr valve
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Abstract
The invention discloses an EGR valve response time testing device in a position feedback type. The EGR valve response time testing device in the position feedback type comprises a cabinet body, a working platform is arranged on the cabinet body, and a support and a cavity for containing a vacuum pump are arranged in the cabinet body. A display screen, a power supply adjusting switch, a duty ratio output size control switch, an electric EGR valve test starting button, a pneumatic EGR valve test starting button, a vacuum degree size control knob, an electric EGR valve connector and a pneumatic EGR valve connector are arranged on the working platform. An adjustable power supply, a computer board, a voltage signal collecting card and a vacuum regulator are arranged on the support in the cabinet body. According to the EGR valve response time testing device in the position feedback type, all related wire harnesses and equipment are integrated on a testing table, cumbersome connection and replacement of the wire harnesses the equipment in the testing process by the testing personnel are avoided, operation, observation, comparison and analysis can be carried out conveniently, the error rate of the operation is lowered, and working efficiency is improved.
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 regulating the flow of controlling EGR gas, electric EGR valve is by the aperture size of inner DC MOTOR CONTROL air intake opening, thereby pneumatic EGR valve is the aperture size of controlling the vacuum tightness control EGR valve that imposes on EGR valve by vacuum governor.Two kinds of EGR valves all regulate exhaust gas flow in mode separately, and returning to cylinder after waste gas is mixed by a certain percentage with fresh air carries out recycle, to reduce combustor inner cylinder temperature and burning rate, thereby further reduce the discharge capacity of NOX.For pneumatic EGR valve, electric EGR valve has fast response time, can adapt to the feature that high-frequency operating mode is switched, and electric EGR valve can also solve some vehicle and there is no the advantage of vacuum source; Compare electric EGR valve, pneumatic EGR valve has advantages of good stability, can be applicable to various mal-conditions.
In situation along with current emission regulation demands 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, wherein the most important thing of EGR valve electric property for the open and close response time test of EGR valve, but at present in the process of detection EGR response valve 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, because the plug of electric EGR valve is that Electric Machine Control and position feedback integrate, will cause wiring error if therefore careless slightly in the time of wiring, not only cannot detect electric EGR valve, and exist the situation that burns out electric EGR valve to occur.And in the time of the pneumatic EGR valve of test, also need to connect vacuum pump and vacuum governor to be used for regulating the size of vacuum tightness, therefore in testing process, need ceaselessly to change wire harness and testing apparatus, then reconnect, detect again, cause testing process complicated operation, detection time is longer, can not ensure the degree of accuracy of test.
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 the device detecting to the EGR response valve time, further reduce misoperation rate, 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 response valve time tester, comprises cabinet, and the top end face of cabinet is provided with workbench, is provided with the support of placing electric controling part and the cavity of placing vacuum pump in cabinet; Described workbench comprises the operating platform of level and the display platform of setting, on the display platform of erectting, be provided with display screen, on the operating platform of level, be provided with power adjustment switch, dutycycle and export big or small gauge tap, electric EGR valve test start button, pneumatic EGR valve test start button, vacuum tightness size control handle and electric EGR valve interface and pneumatic EGR valve interface; On support in described cabinet, be 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 is also exported big or small gauge tap with dutycycle and is connected; Described computer board Yi road output terminal 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 port 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 having adopted above technical scheme, the invention technological progress is as follows.
The present invention is by being integrated in same casing for detection of all kinds of electronic, pneumatic EGR response valve time detection devices, the dutycycle voltage swing that computer board can be exported to EGR valve according to the demand control of testing crew, voltage signal acquisition card collects the voltage signal that EGR valve position sensors is fed back, voltage signal is along with also corresponding linear must the increase of increase of aperture, voltage signal is transferred to display screen and shows with the form of curve, thereby obtains the switching response time of EGR valve by the width of test curve.The present invention is by all relevant wire harness and integration of equipments to monitor station, avoid experimenter in experimentation, to carry out connection and the replacing of loaded down with trivial details wire harness, equipment, handled easily, observation, comparison and analysis, reduced misoperation rate, improved work efficiency.
Brief description of the drawings
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 is exported big or small 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 response valve time tester, comprises cabinet, and the top end face of cabinet is provided with workbench, is provided with the support of placing electric controling part and the cavity of 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 angle between operating platform can arrange 45 ° ~ 60 °, to facilitate experimenter to observe and to operate.
On display platform, be provided with display screen 1, for showing the current dutycycle voltage of detected EGR valve and the response time curve that detected EGR valve feeds back to exported to, the big or small curve calculation switching response time that facilitates experimenter to open according to detected EGR valve.
On the operating platform of level, be provided with power adjustment switch 3, dutycycle and export big or small gauge tap 6, electric EGR valve test start button 7, pneumatic EGR valve test start button 8, vacuum tightness size control handle 11 and electric EGR valve interface 13 and pneumatic EGR valve interface 12.Facilitate experimenter to select corresponding button to operate according to detected EGR valve.
On support in cabinet, be 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, is used to computer board 4 and voltage signal acquisition card 5 that working power is provided; The signal output part of computer board 4 and voltage signal acquisition card 5 is respectively by data line and display screen 1, computer board 4 shows the current dutycycle voltage transmission of exporting to detected EGR valve to display screen, the response time curve transmission that voltage signal acquisition card 5 feeds back to the detected EGR valve gathering shows to display screen.The input end of computer board 4 is also exported big or small 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 port 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 ends also connect vacuum pump 10 through vacuum tightness size control handle 11.
When the present invention is used 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 big or small 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 Real-time Collection electric EGR valve to be detected unlatching curve, and show by display screen.
When the present invention is used 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 big or small 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, thereby controls the aperture of pneumatic EGR valve.5, voltage signal acquisition card can Real-time Collection pneumatic EGR valve to be detected unlatching curve, and show 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, by measuring the width of curvilinear motion, thus the response time that draws threshold switch.The present invention can test from 0%-100% or 100%-0% or any one demand percent how much to response time of percent how many aperture.
Claims (1)
1. band position feedback type EGR response valve time tester, is characterized in that: comprise cabinet, the top end face of cabinet is provided with workbench, is provided with the support of placing electric controling part and the cavity of placing vacuum pump in cabinet;
Described workbench comprises the operating platform of level and the display platform of setting, on the display platform of erectting, be provided with display screen (1), on the operating platform of level, be provided with power adjustment switch (3), dutycycle and export big or small gauge tap (6), electric EGR valve test start button (7), pneumatic EGR valve test start button (8), vacuum tightness size control handle (11) and electric EGR valve interface (13) and pneumatic EGR valve interface (12);
On support in described cabinet, be 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 the signal output part of computer board (4) and voltage signal acquisition card (5) is respectively by data line and display screen (1);
The input end of described computer board (4) is also exported big or small gauge tap (6) with dutycycle and is connected;
Described computer board (4) Yi road output terminal 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 port 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 |
|---|---|---|---|
| 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 true CN103926070A (en) | 2014-07-16 |
| CN103926070B CN103926070B (en) | 2016-03-23 |
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Cited By (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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| 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 |
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| CN103196662A (en) * | 2013-03-20 | 2013-07-10 | 无锡隆盛科技股份有限公司 | Endurance test device used for exhaust gas recirculation (EGR) 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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2014
- 2014-04-25 CN CN201410171229.1A patent/CN103926070B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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 |
| JP2013036749A (en) * | 2011-08-03 | 2013-02-21 | Fuji Heavy Ind Ltd | Failure diagnosis device of electromagnetic driving type control valve |
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Cited By (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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| Publication number | Publication date |
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| CN103926070B (en) | 2016-03-23 |
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