CN206903779U - Low pressure EGR valve magnet steel detent mechanism - Google Patents
Low pressure EGR valve magnet steel detent mechanism Download PDFInfo
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- CN206903779U CN206903779U CN201720886707.6U CN201720886707U CN206903779U CN 206903779 U CN206903779 U CN 206903779U CN 201720886707 U CN201720886707 U CN 201720886707U CN 206903779 U CN206903779 U CN 206903779U
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- magnet steel
- rotating shaft
- low pressure
- egr valve
- pressure egr
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Abstract
The utility model discloses a kind of low pressure EGR valve magnet steel detent mechanism, including magnet steel is fixed on to the plastic shell on rotating shaft top；What the plastic shell included being used to be coaxially disposed is used to wrap up the magnet steel parcel of magnet steel and the rotating shaft fixed part for being fixedly connected with rotating shaft, the external diameter of the magnet steel parcel is more than the external diameter of rotating shaft fixed part, the through hole that rotating shaft fixed part is coaxially offered through rotating shaft and is equipped with rotating shaft interference, the through hole correspond to and are provided with flat position on the N poles inwall or S poles inwall of magnet steel.The utility model is applied in low pressure EGR valve, magnet steel can not only be reliably mounted on to rotating shaft top, but also benchmark can be provided for the installation polarity of magnet steel, it ensure that sensor unit is capable of the variable condition in accurate feedback magnetic field, provided safeguard for the safe and reliable operation of low pressure EGR valve.
Description
Technical field
It the utility model is related to the EGR valve technical field of gasoline engine exhaust recirculating system, particularly a kind of low pressure
The auxiliary body of EGR valve.
Background technology
With energy increasingly depleted, country requires automobile fuel consumption more and more higher, and conventional EGR valve is mainly used in diesel oil hair
In motivation, effect is to reduce particulate matter and NOx discharge, but is goed deep into research, finds to apply when it and is sent out in gasoline engine
During motivation field, discharge can be more excellent after assembling EGR valve, and most critical can be remarkably decreased for oil consumption.It is real according to external authoritative institution
Test and show, cool down EGR valve system with DC motor Driver band, oil consumption 5%-8% even more highs, base can be saved according to engine difference
In current gasoline engine in the basic crack of Chinese passenger car, EGR valve is using can be more and more extensive.
It is point of no high-low pressure for traditional naturally aspirated engine, is divided into the gasoline engine EGR with turbocharger
High pressure EGR and low pressure EGR.Take gas to be referred to as high pressure EGR before pinch roller, take gas to be referred to as low pressure EGR after turbine.High pressure at present
EGR valve has criticized production, the advantage of high pressure EGR valve, is not damaged for pinch roller and charge air cooler, air higher additionally, due to pressure
Flow velocity is higher, makes EGR reaction rates high, but high pressure EGR does not cover Ulva Pertusa region, and cost is higher than low pressure EGR in addition
Valve.And the advantage of low pressure EGR be vented by pinch roller, charge air cooler, be evenly distributed in cylinder, thus the ratio of combustion of cylinder compared with
Uniformly, the burning uniformity of each cylinder is preferable.
Applied to the low pressure EGR valve of gasoline engine, including valve body, sensor unit, transmission system, return structure system and
Sealing system etc. five is most of, and the structure of each section all plays vital effect to the overall performance of valve.Wherein, sense
Device assembly application hall principle, structure include sensor, sensor chip and magnet steel, the magnetic field formed by inductive magnetic steel
The aperture of reacting condition low pressure EGR valve valve, and change into voltage signal and feed back to ECU, so as to form whole closed-loop control.Mesh
Before, the mode generally use magnet steel mode directly be bonded with rotating shaft that magnet steel is installed on rotating shaft top is fixed, but at present
Domestic technique for sticking is immature, and the bonding danger that loosely magnet steel comes off often occurs, can not ensure the use of low pressure EGR valve
Life-span；And it is bonded that cost is higher, improves the manufacturing cost of low pressure EGR valve.
The content of the invention
The utility model technical issues that need to address are to provide a kind of magnet steel detent mechanism applied to low pressure EGR valve,
Magnet steel can not only be reliably mounted on to rotating shaft top, but also benchmark can be provided for the installation polarity of magnet steel, ensure to pass
Sensor assembly can accurate feedback changes of magnetic field state, provided safeguard for the safe and reliable operation of low pressure EGR valve.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
Low pressure EGR valve magnet steel detent mechanism, including magnet steel is fixed on to the plastic shell on rotating shaft top；The plastic shell
Including for being coaxially disposed for wrapping up the magnet steel parcel of magnet steel and the rotating shaft fixed part for being fixedly connected with rotating shaft, institute
The external diameter for stating magnet steel parcel is more than the external diameter of rotating shaft fixed part, rotating shaft fixed part coaxially offer through rotating shaft and with rotating shaft
It is full of equipped through hole, the through hole corresponds to and is provided with flat position on the N poles inwall or S poles inwall of magnet steel.
Above-mentioned low pressure EGR valve magnet steel detent mechanism, the flat position are structure as a whole with plastic shell.
Above-mentioned low pressure EGR valve magnet steel detent mechanism, anaerobism glue-line is provided with the inwall of the through hole.
As a result of above technical scheme, technological progress acquired by the utility model is as follows.
The utility model is applied in low pressure EGR valve, and magnet steel can not only be reliably mounted on to rotating shaft top, but also
Benchmark can be provided for the installation polarity of magnet steel, ensure that sensor unit is capable of the variable condition in accurate feedback magnetic field, be low
The safe and reliable operation of pressure EGR valve provides safeguard.The flat position that the rotating shaft fixed part inner chamber of plastic shell is set, can not only ensure
Position is relatively fixed between rotating shaft and magnet steel, and is alternatively arranged as the benchmark of magnet steel N/S polarity, operation convenient for assembly.
Brief description of the drawings
Fig. 1 is sectional view of the present utility model；
Fig. 2 is top view of the present utility model.
Wherein：1. magnet steel, 2. plastic shells, 21. flat positions, 3. through holes.
Embodiment
The utility model is further elaborated below in conjunction with specific embodiment.
A kind of low pressure EGR valve magnet steel detent mechanism, its structure are fixed on rotating shaft as depicted in figs. 1 and 2, including by magnet steel 1
The plastic shell 2 on top.Plastic shell 2 includes the magnet steel parcel for being used to wrap up magnet steel for being used to be coaxially disposed and for turning
The rotating shaft fixed part that axle is fixedly connected, the external diameter of magnet steel parcel are more than the external diameter of rotating shaft fixed part, and rotating shaft fixed part is coaxially opened
Rotating shaft and the through hole being equipped with rotating shaft interference are provided through, the through hole corresponds to be provided with the N poles inwall or S poles inwall of magnet steel
Flat position 21.Plastic shell 2 and flat position are structure as a whole in the present embodiment.
To ensure the fastness connected between plastic shell and rotating shaft, there is provided anaerobism glue-line on the inner walls of the via.
Magnet steel in process of production, is directly coated on flat position alignment magnet steel that is interior, and making plastic shell by the utility model
N poles or S poles, one-shot forming；For in mounting magnetic steel in rotating shaft, the through hole of plastic shell directly to be penetrated into rotating shaft,
Through hole is set to be fastenedly connected with rotating shaft top.
Claims (3)
1. low pressure EGR valve magnet steel detent mechanism, it is characterised in that：Including by magnet steel（1）It is fixed on the plastic shell on rotating shaft top
（2）；The plastic shell（2）Including for being coaxially disposed for wrapping up the magnet steel parcel of magnet steel and for being fixed with rotating shaft
The rotating shaft fixed part of connection, the external diameter of the magnet steel parcel are more than the external diameter of rotating shaft fixed part, and rotating shaft fixed part coaxially opens up
The through hole for having through rotating shaft and being equipped with rotating shaft interference, the through hole correspond to be provided with the N poles inwall or S poles inwall of magnet steel it is flat
Position（21）.
2. low pressure EGR valve magnet steel detent mechanism according to claim 1, it is characterised in that：The flat position（21）With it is plastic
Shell（2）It is structure as a whole.
3. low pressure EGR valve magnet steel detent mechanism according to claim 1, it is characterised in that：Set on the inwall of the through hole
It is equipped with anaerobism glue-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886707.6U CN206903779U (en) | 2017-07-21 | 2017-07-21 | Low pressure EGR valve magnet steel detent mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720886707.6U CN206903779U (en) | 2017-07-21 | 2017-07-21 | Low pressure EGR valve magnet steel detent mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903779U true CN206903779U (en) | 2018-01-19 |
Family
ID=61312137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720886707.6U Active CN206903779U (en) | 2017-07-21 | 2017-07-21 | Low pressure EGR valve magnet steel detent mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206903779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339174A (en) * | 2017-07-21 | 2017-11-10 | 无锡隆盛科技股份有限公司 | Low pressure EGR valve magnet steel detent mechanism |
-
2017
- 2017-07-21 CN CN201720886707.6U patent/CN206903779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339174A (en) * | 2017-07-21 | 2017-11-10 | 无锡隆盛科技股份有限公司 | Low pressure EGR valve magnet steel detent mechanism |
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