CN202630891U - Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve - Google Patents
Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve Download PDFInfo
- Publication number
- CN202630891U CN202630891U CN 201220314140 CN201220314140U CN202630891U CN 202630891 U CN202630891 U CN 202630891U CN 201220314140 CN201220314140 CN 201220314140 CN 201220314140 U CN201220314140 U CN 201220314140U CN 202630891 U CN202630891 U CN 202630891U
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- CN
- China
- Prior art keywords
- displacement sensor
- displacement transducer
- egr valve
- sensor body
- sliding rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a displacement sensor for an electric EGR (Exhaust Gas Recirculation) valve. The displacement sensor comprises a displacement sensor body which is connected with the electric EGR valve, wherein a sliding rod is arranged in the displacement sensor body, a base plate is arranged at one side of the sliding rod in the displacement sensor body, the sliding rod is connected with an electric brush, one end of the electric brush is contacted with the base plate, a concave cavity is arranged in the middle of the sliding rod, and a spring is arranged between the concave cavity and the displacement sensor body; the base plate is connected with one end of a contact pin, and the other end of the contact pin is connected with a plug of the displacement sensor body; and a cover is arranged below the displacement sensor body. The displacement sensor body controls the upper and lower positions of the sliding rod by adopting output different resistance values due to different positions of the electric brush (on the sliding rod) on the base plate, so as to be capable of testing and controlling the openness of the EGR valve, so that the performances of a displacement sensor are consistent, the interference of a peripheral magnetic field can be effectively prevented, and the using performance of products can be greatly improved.
Description
Technical field
The utility model relates to a kind of engine exhaust emission control device, especially a kind of displacement transducer that is used on the electronic EGR valve of engine.
Background technology
Exhaust gas recirculation, its ultimate principle are that air inlet is introduced in the part exhaust, improve burning performance, to reduce the formation and the discharge capacity of oxides of nitrogen in the engine exhaust, reduce exhaust pollution.
Electronic EGR valve is one and is installed in and is used for Control and Feedback on the gasoline engine to the electromechanical integrated product of the exhaust gas recirculation of the amount of gas handling system that displacement transducer is exactly a regulation and control product of being used on the electronic EGR valve controlling the EGR valve opening.Because electronic EGR valve need reliablely and stablely be accomplished the EGR valve opening, and the displacement transducer on the electronic EGR valve is exactly the vitals that is used for testing and controlling the EGR valve opening.And the engine motion will produce magnetic field, and displacement transducer is worked in magnetic field, is bound to receive the influence of surrounding magnetic field, can make its electronic EGR valve effect in total system be affected.Like Fig. 1, shown in 2; On the electronic EGR valve 1 top offset sensor body 3 at present commonly used through slide bar (comprising magnet steel) 4 compression springs 5, thereby make the Hall element 7 that links to each other with circuit board 6, various signals is exported in change according to surrounding magnetic field; Be used for testing and control EGR valve opening with this; And the magnet steel in the slide bar 4 is easy to receive the influence of surrounding environment, and the signal of output is just unstable like this, thereby makes its electronic EGR valve effect in total system be affected.
Summary of the invention
The utility model technical matters to be solved provides the displacement transducer on the electronic EGR valve that is used for of a kind of high conformity, anti-electromagnetic interference (EMI).
The technical scheme of the utility model is:
A kind of displacement transducer that is used on the electronic EGR valve; Comprise the displacement transducer body that is connected with electronic EGR valve, be provided with slide bar in the displacement transducer body, a side of slide bar is provided with substrate in the displacement transducer body; Be connected with brush on the slide bar; Be provided with cavity in the middle of one end and the substrate contacts of brush, slide bar, be provided with spring between cavity and the displacement transducer body.
Be connected with an end of contact pin on the substrate, the other end of contact pin is connected with the plug of displacement transducer body.
The below of displacement transducer body is provided with cover.
Beneficial effect: the displacement transducer body that the electronic EGR valve of the utility model connects adopts brush on the slide bar different position on substrate; The difference of the resistance value of being exported; Thereby the upper-lower position of control slide bar; And then can test and control the EGR valve opening, and effectively prevent the interference of surrounding magnetic field thereby make the performance one of displacement transducer make peace, improved the usability of product greatly.
Description of drawings
Fig. 1 is the structural representation of displacement transducer in the electronic EGR valve in the prior art;
Fig. 2 is the partial enlarged drawing at I place among Fig. 1;
Fig. 3 is the structural representation of the utility model;
Fig. 4 is the partial enlarged drawing at II place among Fig. 3.
Among the figure: 1-EGR valve, 2-baffle plate, 3-EGR displacement transducer body, 4-slide bar, 5-spring, 6-circuit board, 7-Hall element, 2 ＇-cover, 6 ＇-substrate, 7 ＇-brush, 8 ＇-contact pin, 11-plug.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of displacement transducer that is used on the electronic EGR valve; Comprise the displacement transducer body 3 that is connected with electronic EGR valve 1, be provided with slide bar 4 in the displacement transducer body 3, a side of slide bar 4 is provided with substrate 6 ＇ in the displacement transducer body 3; Be connected with brush 7 ＇ on the slide bar 4; The end of brush 7 ＇ contacts with substrate 6 ＇, is provided with cavity in the middle of the slide bar 4, is provided with spring 5 between cavity and the displacement transducer body 3.
Be connected with the end of contact pin 8 ＇ on substrate 6 ＇, the other end of contact pin 8 ＇ is connected with the plug 11 of displacement transducer body 3.
The below of displacement transducer body 3 is provided with cover 2 ＇.
Put into substrate 6 ＇ in the displacement transducer body 3, substrate 6 ＇ go up printed resistor, put into spring 5; Put into the slide bar 4 of brushed 7 ＇,, drive brush 7 ＇ and on substrate 6 ＇, move through moving up and down of slide bar 4; Make resistance value change; Can calculate the distance of brush 7 ＇ through the variation of resistance value, thereby draw the distance of slide bar 4 motions, and then can test and control the EGR valve opening in the operation of substrate 6 ＇.
As shown in the figure: as earlier contact pin 8 ＇ to be welded on substrate 6 ＇; Again substrate 6 ＇ are pressed onto in the displacement transducer body 3, the contact pin 8 ＇ other ends are welded on the plug 11 of displacement transducer body 3, put into spring 5; Put into the slide bar 4 of having riveted brush 7 ＇; Cover cover 2 ＇ again, close up through ultrasound wave at last, make cover 2 ＇ close up and be in the same place with displacement transducer body 3.The utility model makes good product consistency, anti-electromagnetic interference (EMI).
Claims (3)
1. displacement transducer that is used on the electronic EGR valve; Comprise the displacement transducer body (3) that is connected with electronic EGR valve (1); Be provided with slide bar (4) in the displacement transducer body (3); It is characterized in that: a side of the interior slide bar of said displacement transducer body (3) (4) is provided with substrate (6 ＇), is connected with brush (7 ＇) on the slide bar (4), and an end of brush (7 ＇) contacts with substrate (6 ＇); Be provided with cavity in the middle of the slide bar (4), be provided with spring (5) between cavity and the displacement transducer body (3).
2. according to the described displacement transducer that is used on the electronic EGR valve of claim 1, it is characterized in that: be connected with the end of contact pin (8 ＇) on the said substrate (6 ＇), the other end of contact pin (8 ＇) is connected with the plug (11) of displacement transducer body (3).
3. the displacement transducer that is used on the electronic EGR valve according to claim 1 is characterized in that: the below of said displacement transducer body (3) is provided with cover (2 ＇).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314140 CN202630891U (en) | 2012-06-29 | 2012-06-29 | Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220314140 CN202630891U (en) | 2012-06-29 | 2012-06-29 | Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202630891U true CN202630891U (en) | 2012-12-26 |
Family
ID=47384084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220314140 Expired - Fee Related CN202630891U (en) | 2012-06-29 | 2012-06-29 | Displacement sensor for electric EGR (Exhaust Gas Recirculation) valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202630891U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277573A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Method for improving precision of electric exhaust gas recirculation (EGR) valve |
| 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 |
| CN109412315A (en) * | 2018-11-14 | 2019-03-01 | 大庆市华禹石油机械制造有限公司 | A kind of oilfield exploitation mechanical equipment motor |
-
2012
- 2012-06-29 CN CN 201220314140 patent/CN202630891U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277573A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Method for improving precision of electric exhaust gas recirculation (EGR) valve |
| CN103277573B (en) * | 2013-06-08 | 2015-04-15 | 无锡隆盛科技股份有限公司 | Method for improving precision of electric exhaust gas recirculation (EGR) valve |
| 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 |
| CN109412315A (en) * | 2018-11-14 | 2019-03-01 | 大庆市华禹石油机械制造有限公司 | A kind of oilfield exploitation mechanical equipment motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20190629 |