CN205805770U - A kind of streamlined electric EGR valve spool - Google Patents
A kind of streamlined electric EGR valve spool Download PDFInfo
- Publication number
- CN205805770U CN205805770U CN201620802065.2U CN201620802065U CN205805770U CN 205805770 U CN205805770 U CN 205805770U CN 201620802065 U CN201620802065 U CN 201620802065U CN 205805770 U CN205805770 U CN 205805770U
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- egr valve
- electric egr
- flat part
- waste gas
- spool
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Abstract
The utility model discloses a kind of streamlined electric EGR valve spool, described spool includes the elliptical section being positioned at the flat part in electric EGR valve waste gas chamber and cross-under in the air inlet of waste gas chamber, the top of described elliptical section is connected with the edge transition of flat part, and the bottom of electric EGR valve center-pole is fixing with the center of flat part to be connected.This utility model anti-backblast ability is strong, and improving cost is cheap, greatly reduces the dependence to motor torsion, it is possible to be suitable for the use demand under the high-grade various operating mode of discharge diesel engine.
Description
Technical field
This utility model relates to engine exhaust emission and controls technical field, particularly a kind of engine exhaust emission waste gas
The spool of electric EGR valve in recirculating system.
Background technology
In engine exhaust-gas recirculating system (egr system), EGR valve is mainly used in regulation and controls the stream of EGR gas
Amount, EGR valve regulates exhaust gas flow by controlling aperture size, returns after making waste gas mix by a certain percentage with fresh air
Cylinder carries out recirculation, to reduce ignition temperature and the burning velocity of cylinder charge, further thus reduce NOXRow
High-volume.
Current road engine EGR system is all to introduce waste gas before turbocharger to import to increase through subcooler
In pressure cold after inlet manifold in.Under the Abgasgesetz that emission request is the most harsh, the discharge of NOx to be made reduces further
It is accomplished by increasing the pressure reduction at EGR valve two ends thus in engine cylinder, imports more waste gas.EGR valve two ends pressure reduction become big,
Exhaust gas flow becomes conference and causes waste gas to increase the impulsive force of spool, and traditional electric EGR valve spool is sheet-like structure, electricity
The motor of dynamic EGR valve and change speed gear box cannot provide enough reverse support force to ensure the stable unlatching of EGR valve, if therefore
Impulsive force suffered by EGR valve core to be reduced, is necessary for EGR valve drive mechanism or spool are re-started design.But change
Drive mechanism not only needs to change the profile of EGR valve, change speed gear box intensity etc., but also the EGR electric current of controller is exported electricity
Road is also required to be adjusted, and improvement amount is big, work complexity, and cost is high.
Summary of the invention
It is strong that this utility model technical issues that need to address are to provide a kind of improving cost backblast ability cheap, anti-
Electric EGR valve spool so that electric EGR valve can meet the discharge need of state more than five electromotor without improving drive mechanism
Ask.
For solving above-mentioned technical problem, technical solution adopted in the utility model is as follows.
A kind of streamlined electric EGR valve spool, described spool includes the flat part being positioned in electric EGR valve waste gas chamber and wears
Being connected on the elliptical section in the air inlet of waste gas chamber, the top of described elliptical section is connected with the edge transition of flat part, in electric EGR valve
The bottom of core bar is fixing with the center of flat part to be connected.
Owing to have employed above technical scheme, technological progress acquired by this utility model is as follows.
This utility model is changed the valve block of original electronic ERG valve into fairshaped ellipsoidal structures by flake, is being subject to
Same gas shock and in the case of not considering EGR valve valve body and pipe resistance factor, the resistance suffered by streamlined spool
Being only 1/5th of sheet type spool, the opposition that EGR valve motor is born is the most weakened, significantly drops
The low dependence to motor torsion, it is possible to be suitable for the use demand under the high-grade various operating mode of discharge diesel engine.
Accompanying drawing explanation
Fig. 1 is the structural representation that this utility model is arranged on electric EGR valve；
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Wherein: 1. motor, 2. change speed gear box, 3. valve body, 4. center-pole, 5. spool.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is further elaborated.
A kind of streamlined electric EGR valve spool, its structure as in figure 2 it is shown, include flat part and elliptical section, the top of elliptical section
End is connected with the edge transition of flat part；Flat part is positioned in the waste gas chamber of electric EGR valve, the bottom of electric EGR valve center-pole
Fix with the center of flat part and be connected；Elliptical section cross-under is in the air inlet in waste gas chamber.
The structure that this utility model is applied in electric EGR valve is as it is shown in figure 1, motor 1 connects speed change punch-out equipment by gear
Structure 2, is additionally provided with angular transducer in change speed gear box 2, and in order to monitor the angle change of change speed gear box 2 output, i.e. EGR valve aperture is big
Little；Change speed gear box 2 and motor 1 are combined into an integral installation on valve seat 3 top, and change speed gear box 2 is connected with center-pole 4 by eccentric,
Center-pole 4 bottom connects this utility model, and motor 1 rotational band movable valve plug 5 moves up and down, thus controls unlatching and the pass of EGR valve
Close.
Application of the present utility model, can be substantially reduced air-flow when exhaust gas flow is bigger in spool course of action by resistance
Power, thus reduce the demand to motor output torque, it is particularly suited for the diesel engine that the states such as VGT more than five EGR rate is higher.
Claims (1)
1. a streamlined electric EGR valve spool, it is characterised in that: described spool includes being positioned in electric EGR valve waste gas chamber
Flat part and cross-under elliptical section in the air inlet of waste gas chamber, the top of described elliptical section is connected with the edge transition of flat part,
The bottom of electric EGR valve center-pole is fixing with the center of flat part to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802065.2U CN205805770U (en) | 2016-07-28 | 2016-07-28 | A kind of streamlined electric EGR valve spool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802065.2U CN205805770U (en) | 2016-07-28 | 2016-07-28 | A kind of streamlined electric EGR valve spool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205805770U true CN205805770U (en) | 2016-12-14 |
Family
ID=57507469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620802065.2U Active CN205805770U (en) | 2016-07-28 | 2016-07-28 | A kind of streamlined electric EGR valve spool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205805770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089508A (en) * | 2016-07-28 | 2016-11-09 | 无锡隆盛科技股份有限公司 | A kind of streamlined electric EGR valve spool |
-
2016
- 2016-07-28 CN CN201620802065.2U patent/CN205805770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089508A (en) * | 2016-07-28 | 2016-11-09 | 无锡隆盛科技股份有限公司 | A kind of streamlined electric EGR valve spool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |