CN207989180U - A kind of enhanced EGR valve of sealing - Google Patents
A kind of enhanced EGR valve of sealing Download PDFInfo
- Publication number
- CN207989180U CN207989180U CN201820863225.3U CN201820863225U CN207989180U CN 207989180 U CN207989180 U CN 207989180U CN 201820863225 U CN201820863225 U CN 201820863225U CN 207989180 U CN207989180 U CN 207989180U
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- valve
- sealing
- egr valve
- air inlet
- sealing ring
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Abstract
The utility model discloses a kind of enhanced EGR valves of sealing, include the valve body with cavity, and be respectively arranged with the air inlet being connected to cavity and gas outlet in valve end；It is provided through valve rod in valve body, and valve rod one end is connected with rotatable valve block at air inlet, and is provided with annular groove in valve block outer circumference surface and sealing ring is installed, which is provided with fracture.Using the utility model by the seal form of change EGR valve, extends the actual life of sealing ring, effectively improve the effective time of sealing.
Description
Technical field
The utility model is related to gasoline engine valve fields, more particularly to a kind of enhanced EGR valve of sealing.
Background technology
EGR（ExhaustGasRecirculation）Valve is one and is used for controlling feeding back to air inlet on gasoline engine
The electromechanical integrated product of the amount of exhaust gas recirculation of system.It is usually located at the right side of inlet manifold, close to throttle body, there is one
The short metal tube for leading to exhaust manifold is connected with it.It, which is acted on, is controlled the exhausted air quantity for entering inlet manifold, is made certain
The exhaust gas of amount flows into inlet manifold and is recycled.EGR valve is component very important, crucial in exhaust gas recirculation device.
Nitrogen and oxygen only can just chemically react under high-temperature and high-pressure conditions, the temperature and pressure in engine combustion room
Above-mentioned condition is met, is forcing acceleration period even more so.When engine operates under a load, EGR valve is opened, and is made a small amount of
Exhaust gas enter inlet manifold, together with combustion mixture enter combustion chamber.EGR valve is closed when idling, again almost without exhaust gas
It is recycled to engine.Automobile exhaust gas is a kind of non-combustible gas (without fuel and oxidant), is not involved in burning in the combustion chamber.
It reduces ignition temperature and pressure by absorbing the partial heat that burning generates, to reduce the production quantity of nitrogen oxide.Into combustion
The exhausted air quantity for burning room increases with the increase of engine speed and load
Exhaust gas recycling be in engine working process, by a part of exhaust gas guide to sucking fresh air (or mixing
Gas), it returns to cylinder interior and carries out the method that recycling participates in burning, effect is the discharge capacity for reducing nitrogen oxide.Oxidation
Nitrogen is a kind of gas done great harm to human body, is mainly generated under conditions of high temperature and oxygen enrichment.It is worked in engine
Portion is such as introduced back into cylinder, because of the main component carbon dioxide specific heat ratio in exhaust gas by journey kind in due course, appropriately
It is larger, so the partial heat that burning generates can be absorbed and be taken out of cylinder by exhaust gas, and there is certain diluting effect to gaseous mixture,
Therefore the maximum temperature and oxygen content for reducing engine combustion, to reduce the production quantity of oxynitride.
But excessive exhaust gas recycling will influence the normal work of engine, it is especially small negative in idling, the slow-speed of revolution
When lotus and engine are in cold operation, and when full load (full throttle) requires engine power performance, recycling
Exhaust gas will produce serious influence to the performance of engine.It therefore, should be according to the actual condition of engine and the change of operating condition
Change, is capable of the exhausted air quantity of adjust automatically participation recycling.
In order to make amount of exhaust gas recirculation not generate excessive influence to engine performance, Modem electronic control engine follows exhaust gas again
Ring also uses Closed-loop Control Strategy, and EGR valve position sensor is arranged at exhaust gas recirculation valve (also using useless in the vehicle having
Gas temperature sensor or pressure sensor), Closed-cycle correction feedback control is carried out to actual amount of exhaust gas recirculation.Therefore, EGR valve
Sealing effective time just seem especially prominent.
Utility model content
The utility model passes through offer and changes EGR mainly solving the technical problems that a kind of enhanced EGR valve of sealing of offer
The seal form of valve extends the actual life of sealing ring, effectively improves the effective time of sealing.
To reach above-mentioned technical purpose, the technical solution adopted in the utility model is as follows：
A kind of enhanced EGR valve of sealing, it is characterised in that：Include the valve body with cavity, and is set respectively in valve end
It is equipped with the air inlet being connected to cavity and gas outlet；Valve rod is provided through in valve body, and valve rod one end connects at air inlet
There is rotatable valve block, and be provided with annular groove in valve block outer circumference surface and sealing ring is installed, which is provided with fracture.
Further, two walls up and down of the annular groove, which are rabbeted, carbon distribution scraping plate, and sealing ring is clipped in carbon distribution scraping plate
It is intermediate.
Further, carbon distribution scraping plate top is curved edge.
Further, the gas outlet is vertically arranged with valve rod.
Further, it is provided with buffer channel between the gas outlet and air inlet.
Further, the valve rod other end stretches out outside valve body.
The utility model has the beneficial effects that：The case where being different from the prior art, the utility model change traditional sense
On utilization of the ring structure in EGR valve, although the verification of a large amount of practices shows after sealing ring is provided with fracture, meeting
It is impacted in the presence of gas leakage slightly, but not to practical application, but can effectively enhance the mean tension of sealing ring, when tightening is whole
Circle sealing is uniform, and effectively can substantially extend the service life of sealing ring.
Description of the drawings
Fig. 1 is the enhanced EGR valve general assembly front view of sealing provided by the utility model.
It is marked in figure：1 it is valve rod, 2 be gas outlet, 3 be valve block, 4 be air inlet, 5 be sealing ring, 6 is annular groove.
Specific implementation mode
The utility model is described further with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1, a kind of enhanced EGR valve of sealing, includes the valve body with cavity, and set respectively in valve end
It is equipped with the air inlet 4 being connected to cavity and gas outlet 2；Valve rod 1 is provided through in valve body, and 1 one end of valve rod is at air inlet 4
It is connected with rotatable valve block 3, and is provided with annular groove 6 in 3 outer circumference surface of valve block and sealing ring 5 is installed, which is provided with
Fracture.
Two walls up and down of the annular groove 6, which are rabbeted, carbon distribution scraping plate, and sealing ring 5 is clipped among carbon distribution scraping plate.Institute
It is curved edge to state carbon distribution scraping plate top.The gas outlet 2 is vertically arranged with valve rod 1.
It is provided with buffer channel between the gas outlet 2 and air inlet 4.1 other end of the valve rod stretches out outside valve body.
In actual use, the valve block 3 of the utility model can be real with the control of valve rod 1 as common EGR valve
It now rotates, realizes positive and negative keying to control air inlet.But the carbon distribution scraping plate of the utility model is when carrying out opening and closing control, Ke Yili
To be attached to the carbon distribution on 4 wall of air inlet with its curved edge extension, avoids carbon distribution from largely being contacted with sealing ring 5, sealing ring 5 is made to draw
Wound.The utility model changes utilization of 5 structure of traditional sealing ring in EGR valve simultaneously, and a large amount of practices are tested
Although card shows after sealing ring 5 is provided with fracture, there can be gas leakage slightly, but not practical application be impacted, it can be with
The effectively mean tension of enhancing sealing ring 5, the whole circle sealing of when tightening uniformly, and effectively can substantially extend making for sealing ring 5
Use the service life.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Using equivalent structure or equivalent flow shift made by utility model specification and accompanying drawing content, it is applied directly or indirectly in it
His relevant technical field, is equally included in the patent within the scope of the utility model.
Claims (6)
1. a kind of enhanced EGR valve of sealing, it is characterised in that：Include the valve body with cavity, and be respectively set in valve end
There are the air inlet being connected to cavity and gas outlet；Valve rod is provided through in valve body, and valve rod one end is connected at air inlet
Rotatable valve block, and be provided with annular groove in valve block outer circumference surface and sealing ring is installed, which is provided with fracture.
2. the enhanced EGR valve of sealing according to claim 1, it is characterised in that：Two walls up and down of the annular groove are embedding
It is connected to carbon distribution scraping plate, sealing ring is clipped among carbon distribution scraping plate.
3. the enhanced EGR valve of sealing according to claim 2, it is characterised in that：Carbon distribution scraping plate top is arc
Cutting edge.
4. the enhanced EGR valve of sealing according to claim 1, it is characterised in that：The gas outlet is vertically arranged with valve rod.
5. the enhanced EGR valve of sealing according to claim 1, it is characterised in that：It is set between the gas outlet and air inlet
It is equipped with buffer channel.
6. the enhanced EGR valve of sealing according to claim 1, it is characterised in that：The valve rod other end stretches out outside valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820863225.3U CN207989180U (en) | 2018-06-05 | 2018-06-05 | A kind of enhanced EGR valve of sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820863225.3U CN207989180U (en) | 2018-06-05 | 2018-06-05 | A kind of enhanced EGR valve of sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989180U true CN207989180U (en) | 2018-10-19 |
Family
ID=63831225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820863225.3U Active CN207989180U (en) | 2018-06-05 | 2018-06-05 | A kind of enhanced EGR valve of sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989180U (en) |
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2018
- 2018-06-05 CN CN201820863225.3U patent/CN207989180U/en active Active
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