CN105203320A - Response time detection device of non-position-feedback type EGR valve - Google Patents
Response time detection device of non-position-feedback type EGR valve Download PDFInfo
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- CN105203320A CN105203320A CN201510776109.9A CN201510776109A CN105203320A CN 105203320 A CN105203320 A CN 105203320A CN 201510776109 A CN201510776109 A CN 201510776109A CN 105203320 A CN105203320 A CN 105203320A
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- egr valve
- feedback type
- position feedback
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- 230000004044 response Effects 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 title abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000006698 induction Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000011217 control strategy Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention discloses a response time detection device of a non-position-feedback type EGR valve. The response time detection device comprises a substrate fixedly mounted on the outer end side of an air inlet flange of the non-position-feedback type EGR valve, wherein a position feedback sensor is fixedly arranged on the outer end surface of the substrate; a telescopic rod perpendicular to the substrate is arranged between the substrate and the flange, and penetrates through one end of the substrate; a spring is arranged between the telescopic rod and the sensing end of the position feedback sensor; the other end of the telescopic rod is connected with a valve plate of the non-position-feedback type EGR valve in a propped manner. The response time detection device is a device equipped with the position feedback sensor and mounted on the air inlet flange of the non-position-feedback type EGR valve, so that the movement condition of the valve plate of the non-position-feedback type EGR valve can be monitored, and the open-close response time of the non-position-feedback type EGR valve can be detected.
Description
Technical field
The present invention relates to diesel engine technical field, particularly the pick-up unit of a kind of response time without position feedback type EGR valve for commonly using light diesel automobile.
Background technology
In engines exhaust gas recirculation (EGR) system, ECU calculates the aperture of current EGR systems demand according to signals such as engine speed, oil mass, water temperatures, then the aperture size of EGR valve is controlled according to result of calculation, thus adjustment exhaust gas flow, return cylinder after waste gas is mixed by a certain percentage with fresh air and carry out recycle, temperature and burning rate is burnt, further thus reduce NO to reduce cylinder combustion
xdischarge capacity.
Control strategy for EGR valve has a variety of, the most frequently used is two kinds: a kind of is using the aperture size of EGR valve as control benchmark, using the position sensor feedback voltage of EGR valve as feedback signal, this egr system is comparatively simple, be mainly used in the substandard diesel engine of state three and comprise non-rice habitats type, but the EGR valve used in this egr system must be the EGR valve with position feedback.The control strategy of another EGR is for carry out closed-loop control using air capacity as benchmark, and this egr system controls more accurate, is widely used in the diesel motor of state four and state five; Need in such egr system air flowmeter monitoring air inlet amount to be installed as feedback signal, so this egr system can use without position feedback type EGR valve.For EGR valve, possess the advantage on cost without position feedback type EGR valve, in addition, because this EGR valve is only mechanical parts, Comparatively speaking permanance is better, therefore applies more extensive.
In the production of EGR valve and the process of test, the response time is an important indicator of the key components and parts of this motor vehicle emission of EGR valve, and for the EGR valve of position sensor, its response time is easier to detect; And for the EGR valve without position feedback type, the detection of its response time never has special test frock.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind ofly can carry out to the response time without position feedback type EGR valve the device that accurately detects easily.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
Without the response time pick-up unit of position feedback type EGR valve, comprise the substrate be fixedly mounted on without the outer side of position feedback type EGR valve air intake opening flange, the end face outside of substrate is fixedly installed a position feedback transducer, the expansion link vertical with substrate is provided with between substrate with valve air intake opening flange, expansion link is provided with spring through one end of substrate and the induction end of position feedback transducer, the other end of expansion link with without position feedback type EGR valve valve block phase apical grafting.
The above-mentioned response time pick-up unit without position feedback type EGR valve, the expansion link top of described pick-up unit is provided with taking over a business perpendicular to expansion link.
Owing to have employed above technical scheme, the invention technological progress is as follows.
The present invention is by monitoring motion conditions without position feedback type EGR valve sheet without position feedback type EGR valve bottom air inlet flange installation one with the device of position feedback transducer, the response time opened and closed without position feedback type EGR valve can be detected, solve the test problems without the position feedback type EGR valve response time; Not only may be used for testing laboratory to test without position feedback type EGR valve, batch detection can be carried out for the production of on line to without position feedback type EGR valve equally.
Accompanying drawing explanation
Fig. 1 be pick-up unit of the present invention in testing process with the assembling exploded view without position feedback type EGR valve.
Wherein: 1. without position feedback type EGR valve, 2. expansion link, 21. take over a business, 3. substrate, 4. bolt, 5. position feedback transducer, 6. valve air intake opening flange.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
A kind of response time pick-up unit without position feedback type EGR valve, comprise substrate 3, position feedback transducer 5 and expansion link 2, position feedback transducer 5 is fixedly installed in the end face outside of substrate 3, and expansion link 2 is arranged between substrate 3 and valve air intake opening flange 6, and vertical with substrate; Expansion link is provided with spring through one end of substrate and the induction end of position feedback transducer, when the other end of expansion link is for detecting the response time without position feedback type EGR valve with without position feedback type EGR valve valve block phase apical grafting.The present invention, for ensureing expansion link and the reliable apical grafting of valve block, increases the contact area with valve block, and valve block can not be deformed in testing process, be fixedly installed take over a business 21 on the top of expansion link.
When adopting the present invention to detect the response time without position feedback type EGR valve, concrete operation method is: first, at the center drilling of substrate, installs expansion link, spring and position feedback transducer.Secondly, substrate is offered two mounting holes connected with valve air intake opening flange, by bolt 4, substrate is fixedly mounted on valve air intake opening flange, and make expansion link top take over a business with without position feedback type EGR valve 1 valve block phase apical grafting; Due to the effect of spring, taking over a business of expansion link top is close together between valve block all the time.Pick-up unit in testing process with the assembly relation without position feedback type EGR valve as shown in Figure 1.Then, start without position feedback type EGR valve, the opening and closing that expansion link can follow hard on without position feedback type EGR valve valve block are moved together, the induction end action of further drive position feedback transducer, draws by the voltage signal change of collection position feedback transducer the response time opened and closed without position feedback type EGR valve.
Claims (2)
1. without the response time pick-up unit of position feedback type EGR valve, it is characterized in that: comprise the substrate (3) be fixedly mounted on without the outer side of position feedback type EGR valve air intake opening flange, the end face outside of substrate is fixedly installed a position feedback transducer (5), the expansion link (2) vertical with substrate is provided with between substrate (3) with valve air intake opening flange (6), expansion link is provided with spring through one end of substrate and the induction end of position feedback transducer, the other end of expansion link with without position feedback type EGR valve valve block phase apical grafting.
2. the response time pick-up unit without position feedback type EGR valve according to claim 1, is characterized in that: expansion link (2) top of described pick-up unit is provided with taking over a business (21) perpendicular to expansion link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510776109.9A CN105203320A (en) | 2015-11-13 | 2015-11-13 | Response time detection device of non-position-feedback type EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510776109.9A CN105203320A (en) | 2015-11-13 | 2015-11-13 | Response time detection device of non-position-feedback type EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105203320A true CN105203320A (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510776109.9A Pending CN105203320A (en) | 2015-11-13 | 2015-11-13 | Response time detection device of non-position-feedback type EGR valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN105203320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063671A (en) * | 2017-05-26 | 2017-08-18 | 新希望乳业股份有限公司 | Guaranteed milk Pasteurisation apparatus valve response timing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2644688Y (en) * | 2003-09-10 | 2004-09-29 | 黄显华 | Negative pressure type position feedback pattern exhaust gas recirculation valve |
| US6837226B2 (en) * | 2001-01-31 | 2005-01-04 | Cummins, Inc. | System for diagnosing EGR valve, actuator and sensor related failure conditions |
| CN102705112A (en) * | 2012-06-26 | 2012-10-03 | 无锡隆盛科技股份有限公司 | Reverse EGR (Exhaust Gas Recirculation) valve with correctable position transducer initial value |
| CN202630891U (en) * | 2012-06-29 | 2012-12-26 | 无锡隆盛科技股份有限公司 | Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve |
| CN103926070A (en) * | 2014-04-25 | 2014-07-16 | 无锡隆盛科技股份有限公司 | EGR valve response time testing device in position feedback type |
| CN203812082U (en) * | 2014-01-03 | 2014-09-03 | 江苏海龙电器有限公司 | OCV valve response time testing apparatus |
| CN205103022U (en) * | 2015-11-13 | 2016-03-23 | 无锡隆盛科技股份有限公司 | Response time detection device of no position feedback formula EGR valve |
-
2015
- 2015-11-13 CN CN201510776109.9A patent/CN105203320A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837226B2 (en) * | 2001-01-31 | 2005-01-04 | Cummins, Inc. | System for diagnosing EGR valve, actuator and sensor related failure conditions |
| CN2644688Y (en) * | 2003-09-10 | 2004-09-29 | 黄显华 | Negative pressure type position feedback pattern exhaust gas recirculation valve |
| CN102705112A (en) * | 2012-06-26 | 2012-10-03 | 无锡隆盛科技股份有限公司 | Reverse EGR (Exhaust Gas Recirculation) valve with correctable position transducer initial value |
| CN202630891U (en) * | 2012-06-29 | 2012-12-26 | 无锡隆盛科技股份有限公司 | Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve |
| CN203812082U (en) * | 2014-01-03 | 2014-09-03 | 江苏海龙电器有限公司 | OCV valve response time testing apparatus |
| CN103926070A (en) * | 2014-04-25 | 2014-07-16 | 无锡隆盛科技股份有限公司 | EGR valve response time testing device in position feedback type |
| CN205103022U (en) * | 2015-11-13 | 2016-03-23 | 无锡隆盛科技股份有限公司 | Response time detection device of no position feedback formula EGR valve |
Non-Patent Citations (1)
| Title |
|---|
| 朱昌吉: "车用柴油机电控EGR系统设计及性能研究", 《中国优秀博硕士学位论文全文数据库（博士）工程科技II辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063671A (en) * | 2017-05-26 | 2017-08-18 | 新希望乳业股份有限公司 | Guaranteed milk Pasteurisation apparatus valve response timing method |
| CN107063671B (en) * | 2017-05-26 | 2019-10-18 | 新希望乳业股份有限公司 | Guaranteed milk Pasteurisation apparatus valve response time measuring method |
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Application publication date: 20151230 |