CN102359872A - Detection device of vacuum solenoid valve - Google Patents
Detection device of vacuum solenoid valve Download PDFInfo
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- CN102359872A CN102359872A CN2011102616353A CN201110261635A CN102359872A CN 102359872 A CN102359872 A CN 102359872A CN 2011102616353 A CN2011102616353 A CN 2011102616353A CN 201110261635 A CN201110261635 A CN 201110261635A CN 102359872 A CN102359872 A CN 102359872A
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Abstract
The invention relates to a detection device of a vacuum solenoid valve. The detection device is characterized by comprising a vacuum air inlet end, a vacuum air outlet end and an electromagnetic signal end; the vacuum air inlet end is provided with a vacuum air source, and a voltage stabilizing mechanism is arranged behind the vacuum air source; the vacuum air outlet end is provided with a pressure sensor and a standard container; and a variable duty ratio pwm (high-frequency pulse) signal is output by an electromagnetic signal generating device of the electromagnetic signal end. The detection device provided by the invention has the beneficial effects that: the detection device is rational in design, convenient for use, high in efficiency, and good in reliability; and error judgment phenomena are avoided, the quality of ex-factory products is guaranteed and the labor cost is greatly reduced at the same time.
Description
Technical field
The EGR technology, promptly EGR Technology (Exhaust Gas Recycle) is the emission-control equipment that is provided with to harmful gas (NOx).It gets into combusted cylinder after a part of exhaust cycle is got into draft tube and fresh air mixes once more, and to increase the thermal capacity of combination gas, the maximum temperature when reducing burning suppresses the generation of NOx.To be ECU in time open according to control vacuum solenoids such as the rotating speed of engine, load (throttle opening), temperature, charge flow rate, delivery temperatures EGR engine control computer; Intake depression gets into EGR valve vacuum diaphragm chamber through vacuum solenoid; The diaphragm pull bar is with the EGR valve open; Few part exhaust in the engine gets into gas handling system through the EGR valve, mixes the back with combination gas and gets into cylinder participation burning.Few part waste gas gets into the burning that cylinder is participated in combination gas, the temperature when having reduced burning in the cylinder.Because of NOx generates under high-temperature oxygen-enriched condition, thus the generation of NOx suppressed, thus reduced the content of the NOx in the complete machine exhaust.But excessive waste gas is participated in recycle, will influence the catching fire of combination gas, performance, thereby influences the dynamic property of engine, and particularly when engine idle, low speed, little load and cold machine, the waste gas of recycle can influence engine performance significantly.So when engine during at idling, low speed, little load and cold machine, ECU control waste gas is not participated in recycle, avoids engine performance to be affected; When engine surpasses certain rotating speed, loads and reaches certain temperature; The few part waste gas of ECU control is participated in recycle; And the exhausted air quantity of participating in recycle is according to the difference of engine speed, load, temperature and EGT and difference is minimum with the NOx that reaches in the waste gas.
In said process, vacuum solenoid has been brought into play enormous function as the executive component of a key; ECU sends instruction according to the signal of sensor to vacuum solenoid, changes its vacuum tightness size; Thereby change the aperture of EGR valve valve, reached the effect of adjustment waste gas circulation amount.
The vacuum solenoid product in process of production owing to receive parts quality, influences such as assembly technology; The existence of substandard product is arranged all the time; Showing as of substandard product: the curved line relation of input signal and output pressure is not linear, causes the aperture variation of vacuum tightness and EGR valve irregular, if this type of substandard product is used on automobile; Will cause being short of power of automobile, discharge the appearance of problems such as exceeding standard.
Flow out for fear of substandard product; Vacuum solenoid production firm all can be detected the product of producing one by one; The detection method of present stage is to utilize manual detection fully: inlet pressure value and outlet atmospheric pressure value are read in manual work, thereby judge whether product is qualified.Such shortcoming is that efficient is too low, and error is big, and False Rate is high, and human cost is high.
Summary of the invention
The object of the invention, provide a kind of efficient, accurately, the high vacuum electromagnetic valve detection device of automaticity to be to remedy the deficiency of prior art.
The technical scheme that the present invention adopted is: the vacuum electromagnetic valve detection device is characterized in that: comprise the vacuum inlet end, vacuum degassing end and electromagnetic signal end; The vacuum inlet end has vacuum source, and voltage stabilizing mechanism is arranged after the vacuum source, and the vacuum degassing end has pressure transducer and volumetric standard; Electromagnetic signal generating means output variable duty ratio pwm ((high-frequency impulse) signal of electromagnetic signal end.
Described vacuum electromagnetic valve detection device is characterized in that: described voltage stabilizing mechanism is a two-stage voltage stabilizing mechanism: one-level voltage stabilizing mechanism is a gas-holder; Secondary voltage stabilizing mechanism comprises gas-holder, pressure transducer and electric pressure-regulating valve; The purpose of two-stage voltage stabilizing mechanism is to make vacuum inlet end pressure keep constant; Beneficial effect of the present invention is: pick-up unit is reasonable in design, and is easy to use, and efficient is high, and good reliability has been stopped the erroneous judgement phenomenon, and the quality of the product that guaranteed to dispatch from the factory has lowered human cost simultaneously greatly.
Below in conjunction with accompanying drawing, and, the present invention is done further description through embodiment.
Description of drawings
Fig. 1 is a use principle synoptic diagram of the present invention.
Fig. 2 is the structural representation of the embodiment of the invention.
Embodiment
Embodiment: before introducing this pick-up unit; We introduce the concrete principle of using of the present invention earlier; The simplified model of vacuum solenoid 1 as shown in Figure 1, a are the air intake opening (connecing the vacuum inlet end, constant voltage) of vacuum solenoid; B is the by-pass port (connecing atmosphere) of vacuum solenoid, and c is the gas outlet (connecing the vacuum degassing end) of vacuum solenoid.When valve rod d was in the closed position, by-pass port b and gas outlet c were straight-through, do not have pressure reduction between the two.
Be input to the drive system 9 of vacuum solenoid 1 when the pwm signal after, valve rod d produces an action, and certain aperture is arranged; That vacuum solenoid 1 is with regard to a similar T-valve; The constant voltage of air intake opening a changes the force value of gas outlet c after getting involved, and is no longer identical with atmospheric pressure; The difference of this force value and atmospheric pressure is exactly the product index that we need measure.
In like manner, our pwm Design of Signal has been included whole operating modes of vacuum solenoid 1, has promptly designed a plurality of apertures of valve rod d, measures a plurality of pressure differences, can whether judge qualified products.
During practical application, be provided with vacuum pump 2, be used for producing negative pressure at vacuum inlet end end; In order to reduce the fluctuation of air pressure, be provided with two-stage voltage stabilizing mechanism, one-level voltage stabilizing mechanism is simple gas-holder 3; Can reduce the undulating quantity of downstream air pressure, the higher pressure-stabilized air source of precision if desired, just must use secondary voltage stabilizing mechanism: secondary voltage stabilizing mechanism is except also having pressure-stabilized air source 3; Also have pressure transducer 4 and electric control valve 5, when air pressure is greater than or less than setting value, after pressure transducer 4 detects; Feed back signal to electric control valve 5, electric control valve 5 can be regulated, to reach the stable purpose of source of the gas.The vacuum inlet end is received the air intake opening a of vacuum solenoid 1, and so, air intake opening a just has stable air pressure all the time.
The by-pass port b of vacuum solenoid 1 directly connects atmosphere.
The electromagnetic signal generating means 8 of electromagnetic signal end sends pwm, and ((high-frequency impulse) signal is input to the drive system 9 of vacuum solenoid 1.Make valve rod d produce aperture.
The gas outlet c of vacuum solenoid 1 connects the vacuum degassing end; Volumetric standard 6 is arranged behind the vacuum degassing end, and with simulation real work load, pressure transducer 7 is measured this volumetric standard internal gas pressure value (because atmospheric pressure is constant; So this pressure can be regarded as the pressure difference value with atmosphere); The pressure differential signal is delivered to display device, can obtain a point, and this closes the relation that demonstrates pwm signal and pressure differential of fastening from coordinate.
Based on said process; After annexation is accomplished; The electromagnetic signal generating means 8 of electromagnetic signal end produces a plurality of pwm signals (having contained whole operating modes) continuously, and corresponding a plurality of point is just arranged on the display device so, and these points have been formed curve; According to this curve, just can whether judge qualified products very intuitively.
Claims (2)
1. the vacuum electromagnetic valve detection device is characterized in that: comprise the vacuum inlet end, vacuum degassing end and electromagnetic signal end; The vacuum inlet end has vacuum source, and voltage stabilizing mechanism is arranged after the vacuum source, and the vacuum degassing end has pressure transducer and volumetric standard; Electromagnetic signal generating means output variable duty ratio pwm ((high-frequency impulse) signal of electromagnetic signal end.
2. vacuum electromagnetic valve detection device as claimed in claim 1 is characterized in that: described voltage stabilizing mechanism is a two-stage voltage stabilizing mechanism: one-level voltage stabilizing mechanism is a gas-holder; Secondary voltage stabilizing mechanism comprises gas-holder, pressure transducer and electric pressure-regulating valve; The purpose of two-stage voltage stabilizing mechanism is to make vacuum inlet end pressure keep constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102616353A CN102359872A (en) | 2011-09-06 | 2011-09-06 | Detection device of vacuum solenoid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102616353A CN102359872A (en) | 2011-09-06 | 2011-09-06 | Detection device of vacuum solenoid valve |
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| CN102359872A true CN102359872A (en) | 2012-02-22 |
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| CN2011102616353A Pending CN102359872A (en) | 2011-09-06 | 2011-09-06 | Detection device of vacuum solenoid valve |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759444A (en) * | 2012-06-29 | 2012-10-31 | 宜宾天瑞达汽车零部件有限公司 | EGR (Exhaust Gas Recirculation) valve detection device of linear motor |
| CN104209942A (en) * | 2014-08-21 | 2014-12-17 | 常州大学 | Proportional pressure regulating valve PWM (pulse-width modulation) control pneumatic force sense reappearing device and method |
| CN104236870A (en) * | 2013-06-06 | 2014-12-24 | 纬创资通股份有限公司 | Vacuum solenoid detector and method of detecting same |
| CN104316869A (en) * | 2014-10-10 | 2015-01-28 | 武汉黎赛科技有限责任公司 | Action air pressure detection method and system for pressure switch of vacuum main circuit breaker |
| CN104209942B (en) * | 2014-08-21 | 2017-01-04 | 常州大学 | Proportional dump valve PWM controls aerodynamic force sense transcriber and method |
| CN106323620A (en) * | 2016-09-08 | 2017-01-11 | 常熟理工学院 | Electropneumatic proportional valve reuse detection device |
| CN107246854A (en) * | 2017-08-08 | 2017-10-13 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree testboard |
| CN107478421A (en) * | 2017-08-08 | 2017-12-15 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree method of testing and system |
| CN114323633A (en) * | 2021-12-30 | 2022-04-12 | 浙江瑞立空压装备有限公司 | Overflow valve testing device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100455309B1 (en) * | 1997-12-27 | 2005-01-17 | 주식회사 현대오토넷 | Solenoid valve flow measuring device and method for obtaining an accurate flow value by selecting automatically a flow tube and a flow meter according to the size of flow and the compensation of differential pressure |
| KR20090124618A (en) * | 2008-05-30 | 2009-12-03 | 주식회사 현대오토넷 | Apparatus and method for testing valve of solenoid |
| CN101881704A (en) * | 2010-06-08 | 2010-11-10 | 武汉科技大学 | Vacuum valve quality detection platform |
| CN202305687U (en) * | 2011-09-06 | 2012-07-04 | 宜宾天瑞达汽车零部件有限公司 | Vacuum electromagnetic valve detection device |
-
2011
- 2011-09-06 CN CN2011102616353A patent/CN102359872A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100455309B1 (en) * | 1997-12-27 | 2005-01-17 | 주식회사 현대오토넷 | Solenoid valve flow measuring device and method for obtaining an accurate flow value by selecting automatically a flow tube and a flow meter according to the size of flow and the compensation of differential pressure |
| KR20090124618A (en) * | 2008-05-30 | 2009-12-03 | 주식회사 현대오토넷 | Apparatus and method for testing valve of solenoid |
| CN101881704A (en) * | 2010-06-08 | 2010-11-10 | 武汉科技大学 | Vacuum valve quality detection platform |
| CN202305687U (en) * | 2011-09-06 | 2012-07-04 | 宜宾天瑞达汽车零部件有限公司 | Vacuum electromagnetic valve detection device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759444A (en) * | 2012-06-29 | 2012-10-31 | 宜宾天瑞达汽车零部件有限公司 | EGR (Exhaust Gas Recirculation) valve detection device of linear motor |
| CN104236870A (en) * | 2013-06-06 | 2014-12-24 | 纬创资通股份有限公司 | Vacuum solenoid detector and method of detecting same |
| CN104209942A (en) * | 2014-08-21 | 2014-12-17 | 常州大学 | Proportional pressure regulating valve PWM (pulse-width modulation) control pneumatic force sense reappearing device and method |
| CN104209942B (en) * | 2014-08-21 | 2017-01-04 | 常州大学 | Proportional dump valve PWM controls aerodynamic force sense transcriber and method |
| CN104316869A (en) * | 2014-10-10 | 2015-01-28 | 武汉黎赛科技有限责任公司 | Action air pressure detection method and system for pressure switch of vacuum main circuit breaker |
| CN106323620A (en) * | 2016-09-08 | 2017-01-11 | 常熟理工学院 | Electropneumatic proportional valve reuse detection device |
| CN106323620B (en) * | 2016-09-08 | 2018-05-04 | 常熟理工学院 | Electric Proportion valve reuse detection device |
| CN107246854A (en) * | 2017-08-08 | 2017-10-13 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree testboard |
| CN107478421A (en) * | 2017-08-08 | 2017-12-15 | 山东泰展机电科技股份有限公司 | A kind of magnetic valve open degree method of testing and system |
| CN114323633A (en) * | 2021-12-30 | 2022-04-12 | 浙江瑞立空压装备有限公司 | Overflow valve testing device and method |
| CN114323633B (en) * | 2021-12-30 | 2024-01-30 | 浙江瑞立空压装备有限公司 | Testing device and method for overflow valve |
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Application publication date: 20120222 |