CN106286025B - It is anti-to wash vacuum EGR valve open - Google Patents
It is anti-to wash vacuum EGR valve open Download PDFInfo
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- CN106286025B CN106286025B CN201610989019.2A CN201610989019A CN106286025B CN 106286025 B CN106286025 B CN 106286025B CN 201610989019 A CN201610989019 A CN 201610989019A CN 106286025 B CN106286025 B CN 106286025B
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Abstract
The invention discloses one kind to prevent washing vacuum EGR valve, including valve body open, and vacuum chamber, exhaust gas chamber, center-pole and valve block mechanism are provided in valve body, exhaust gas entrance and waste gas outlet are provided in the exhaust gas cavity wall；The center-pole is horizontally disposed, and vacuum chamber and exhaust gas chamber are located at the both ends of center-pole, and exhaust gas entrance and waste gas outlet are separately positioned on the lower part of exhaust gas chamber and top and shift to install；It is provided with the baffle being fixed on valve interior wall in the exhaust gas chamber of corresponding exhaust gas entrance, exhaust gas buffer channel is provided between baffle and exhaust gas entrance；Exhaust gas flow pass is provided in exhaust gas chamber；Exhaust gas buffer channel and exhaust gas flow pass are arranged in parallel with center-pole；In the exhaust gas chamber that valve block mechanism is arranged between exhaust gas buffer channel and exhaust gas flow pass.The present invention can either prevent EGR during automobile emergency accelerates or impact carries from accidentally being washed open by exhaust gas, can also solve the problems, such as that large truck can not ensure braking effect in braking process because EGR is accidentally washed open by exhaust gas.
Description
Technical field
The present invention relates to engine exhaust emission recirculating system technical fields, especially a kind of to be applied to large-scale vapor laden
The diesel engine EGR valves of vehicle.
Background technology
In engine exhaust-gas recirculating system（Egr system）In, EGR valves are mainly used for adjusting control EGR gas
Flow, EGR valves adjust exhaust gas flow by controlling opening size, are returned after so that exhaust gas is mixed in a certain ratio with fresh air
Back-steam cylinder is recycled, and to reduce combustor inner cylinder temperature and burning velocity, is further reduced NOXDischarge capacity.
The egr system of automobile engine is all that exhaust gas is introduced before turbocharger through subcooler, imported into supercharging
In it is cold after inlet manifold in；When automobile engine suddenly accelerates or impact carries, demand EGR valve is remained turned-off to ensure enough
Power, however when engine suddenly accelerates pressure at expulsion can great increasing, traditional EGR valve is since air inlet is positioned at by valve block and valve
On the internal chamber wall that internal wall is constituted, therefore easily washed open by the larger exhaust of pressure.For large truck, on tailpipe also
Equipped with exhaust brake valve, exhaust brake valve is closed when brake, to increase engine exhaust resistance, enhancing braking effect, but tradition
EGR valve equally exist when exhaust brake valve is closed and be easy the phenomenon that being washed open by huge pressure at expulsion, therefore can not ensure
Braking effect.
Invention content
The technical problem to be solved in the invention is to provide a kind of vacuum type EGR valve that anti-exhaust gas is washed open, can either prevent
EGR is accidentally washed open by exhaust gas during automobile emergency accelerates or impact carries, and can also solve large truck in braking process because of EGR
The problem of accidentally being washed open by exhaust gas and can not ensureing braking effect.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
It is anti-to wash vacuum EGR valve, including valve body open, vacuum chamber, exhaust gas chamber, center-pole and valve block machine are provided in valve body
Structure is provided with exhaust gas entrance and waste gas outlet in the exhaust gas cavity wall, and valve block mechanism is located in exhaust gas chamber and is connect with center-pole,
Epithelium in the other end connection vacuum chamber of center-pole；The center-pole is horizontally disposed, during vacuum chamber and exhaust gas chamber are located at
The both ends of core bar, the exhaust gas entrance are arranged in the lower part of exhaust gas chamber, and waste gas outlet is arranged on the top of exhaust gas chamber, and exhaust gas enters
Mouth and waste gas outlet shift to install；
It is provided with the baffle being fixed on valve interior wall in the exhaust gas chamber of corresponding exhaust gas entrance, between baffle and exhaust gas entrance
It is provided with the exhaust gas buffer channel for flowing through exhaust gas；It is provided with exhaust gas flow pass in the exhaust gas chamber of corresponding waste gas outlet；It is described useless
Gas buffer channel and exhaust gas flow pass are arranged in parallel with center-pole；The valve block mechanism setting is in exhaust gas buffer channel and gives up
In exhaust gas chamber between gas flow pass.
Above-mentioned to prevent washing vacuum EGR valve open, the valve block mechanism includes keying valve block, promotion valve block and butterfly disposed in parallel
Plate；The keying valve block is vertically mounted on center-pole, and the keying for realizing EGR valve is equipped with exhaust gas flow pass；The butterfly
Baffle end is hinged in the middle part of plate, the bottom end of butterfly plate is connected on the valve interior wall at exhaust gas entrance, and the top of butterfly plate is located at
Open and close valve block and promoted valve block between and with poppet oblique cut grafting；Wherein the lower part of butterfly plate is equipped with exhaust gas buffer channel for preventing
Only exhaust gas actively enters；The promotion valve block is vertically mounted on the center-pole end in exhaust gas chamber for driving disk to act
Open exhaust gas buffer channel.
It is above-mentioned to prevent washing vacuum EGR valve open, equipped keying valve block is provided on the exhaust gas cavity wall below corresponding waste gas outlet
The flange at edge.
Above-mentioned to prevent washing vacuum EGR valve open, the cross-sectional area of the exhaust gas buffer channel is more than the transversal of exhaust gas flow pass
Area.
As a result of above technical scheme, the invention technological progress is as follows.
The valve block mechanism of the present invention uses special construction, and the butterfly plate in valve block mechanism is merely able to carry out by negative pressure of vacuum
One-way conduction controls, therefore automobile vacuum EGR valve in anxious accelerator can be effectively prevent accidentally to be washed open, to making vacuum
EGR valve is in reliable closed state, and enough power is provided for automobile；When of the invention using on large truck, can also ensure
Braking effect of the large truck in brake.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Wherein：1. vacuum chamber, 2. sensors, 3. vacuum interfaces, 4. keying valve blocks, 5. center-poles, 6. butterfly plates, 7. valve bodies,
8. exhaust gas chamber, 9. exhaust gas entrances, 10. waste gas outlets, 11. baffles, 12. promote valve block；
A. exhaust gas buffer channel, B. exhaust gas flow pass.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention will be described in further detail.
One kind is anti-to wash vacuum EGR valve open, and structure is provided with vacuum chamber 1, gives up as shown in Figure 1, including valve body 7 in valve body
Air cavity 8, center-pole 5 and valve block mechanism, 1 top of vacuum chamber installation position sensor 2 is for exporting EGR opening sizes, very
Null interface 3 into vacuum chamber 1 for providing negative pressure；Exhaust gas entrance 9 and waste gas outlet 10, valve block mechanism are provided in exhaust gas cavity wall
It is connect in exhaust gas chamber and with center-pole, the epithelium in the other end connection vacuum chamber of center-pole.
In the present invention, center-pole 5 is horizontally disposed, and vacuum chamber and exhaust gas chamber are located at the both ends of center-pole, exhaust gas entrance
It is arranged in the lower part of exhaust gas chamber, waste gas outlet is arranged on the top of exhaust gas chamber, and exhaust gas entrance and waste gas outlet shift to install；It is right
The baffle 11 for being provided with and being fixed on valve interior wall in the exhaust gas chamber of exhaust gas entrance is answered, stream is provided between baffle and exhaust gas entrance
Cross the exhaust gas buffer channel A of exhaust gas；It is provided with exhaust gas flow pass B in the exhaust gas chamber of corresponding waste gas outlet；Exhaust gas buffer channel A
It is arranged in parallel with center-pole with exhaust gas flow pass B.
Valve block mechanism is arranged in the exhaust gas chamber between exhaust gas buffer channel A and exhaust gas flow pass B, is merely able in EGR
It is opened under the drive of valve center-pole, and when EGR valve is closed, it will not be rushed to open under huge pressure at expulsion.Valve block
The structure of mechanism is as shown in Figure 1, including keying valve block 4 disposed in parallel, promote valve block 12 and butterfly plate 6；Wherein open and close valve block 4
It is vertically mounted on center-pole, and is opened and closed with the equipped actives for realizing EGR valve of exhaust gas flow pass B, below corresponding waste gas outlet
Exhaust gas cavity wall on be provided with the equipped flange for opening and closing 4 edge of valve block, to ensure exhaust gas flow pass in the off state
Sealing performance；The middle part of butterfly plate 6 is hinged on baffle end, and the bottom end of butterfly plate 6 is connected on the valve interior wall at exhaust gas entrance, butterfly
The top of plate 6, which is located at, to be opened and closed valve block 4 and is promoted between valve block 12 and overlapped with valve block 12 is promoted, and the lower part of middle butterfly plate 6 with it is useless
Gas buffer channel A is equipped with for preventing exhaust gas from actively entering；It promotes valve block 12 and is vertically mounted on the center-pole in exhaust gas chamber
End, for driving disk action to open exhaust gas buffer channel A.
In the present invention, the cross-sectional area of exhaust gas buffer channel A is more than the cross-sectional area of exhaust gas flow pass B, it is ensured that opens and closes
The opening size of valve block 4 and the homologous thread of exhaust gas flow are not influenced by butterfly plate 6.
It when the present invention installs, must install straight down, to ensure to be promoted valve block 4 in the case of closing, butterfly plate 6 is by gravity
Effect is at closed position, prevents exhaust gas from accidentally washing open.
The operation principle of the present invention is that：When EGR valve needs to open, vacuum interface provides the negative pressure of corresponding opening size,
Negative pressure drives center-pole to be moved to the left, and opens and closes valve block and is detached with the flange on exhaust gas flow pass, opens respective angles, carry simultaneously
The top that lift valve piece 12 hooks dynamic butterfly plate 6 is moved to the left, and butterfly plate is rotated around axis pin, and exhaust gas entrance wall is left in the bottom end of butterfly plate 6, is opened
Exhaust gas buffer channel after exhaust gas sequentially enters exhaust gas buffer channel, exhaust gas chamber and exhaust gas flow pass, is discharged from waste gas outlet；
When EGR valve needs to close, center-pole moves right in the case where restoring force effect, drives keying valve block and promotion valve block right simultaneously
It moves, opens and closes valve block and Hp contacts, close exhaust gas flow pass, butterfly plate resets under gravity and pressure at expulsion effect, by exhaust gas
Buffer channel is closed.Due to butterfly plate be opened by center-pole drive and move, and can only one-way movement, when butterfly plate close give up
When gas buffer channel, i.e., under EGR valve closed state, even if pressure at expulsion is big again, it will not will open and close valve block and wash open, ensure that
Enough power is provided in automobile emergency accelerator, while can also ensure braking effect of the large truck in brake.
Claims (3)
1. anti-wash vacuum EGR valve, including valve body open（7）, vacuum chamber is provided in valve body（1）, exhaust gas chamber（8）, center-pole（5）With
And valve block mechanism, exhaust gas entrance is provided in the exhaust gas cavity wall（9）And waste gas outlet（10）, valve block mechanism is located in exhaust gas chamber
And it is connect with center-pole, the epithelium in the other end connection vacuum chamber of center-pole；It is characterized in that：The center-pole（5）It is horizontal
Setting, vacuum chamber and exhaust gas chamber are located at the both ends of center-pole, and the exhaust gas entrance is arranged in the lower part of exhaust gas chamber, and exhaust gas goes out
Mouth is arranged on the top of exhaust gas chamber, and exhaust gas entrance and waste gas outlet shift to install；
It is provided with the baffle being fixed on valve interior wall in the exhaust gas chamber of corresponding exhaust gas entrance（11）, between baffle and exhaust gas entrance
It is provided with the exhaust gas buffer channel for flowing through exhaust gas（A）；It is provided with exhaust gas flow pass in the exhaust gas chamber of corresponding waste gas outlet（B）；
The exhaust gas buffer channel（A）With exhaust gas flow pass（B）It is arranged in parallel with center-pole；The valve block mechanism is arranged in exhaust gas
Buffer channel（A）With exhaust gas flow pass（B）Between exhaust gas chamber in；
The valve block mechanism includes keying valve block disposed in parallel（4）, promoted valve block（12）And butterfly plate（6）；The keying valve
Piece（4）Be vertically mounted on center-pole, and with exhaust gas flow pass（B）The equipped keying for realizing EGR valve；The butterfly plate（6）'s
Middle part is hinged on baffle end, butterfly plate（6）Bottom end be connected on the valve interior wall at exhaust gas entrance, butterfly plate（6）Top position
In keying valve block（4）With promotion valve block（12）Between and with promoted valve block（12）Overlap joint；Wherein butterfly plate（6）Lower part and exhaust gas it is slow
Rush channel（A）It is equipped with for preventing exhaust gas from actively entering；The promotion valve block（12）In being vertically mounted in exhaust gas chamber
Core bar end is for driving disk action to open exhaust gas buffer channel（A）.
2. according to claim 1 prevent washing vacuum EGR valve open, it is characterised in that：Exhaust gas chamber below corresponding waste gas outlet
Equipped keying valve block is provided on inner wall（4）The flange at edge.
3. according to claim 1 prevent washing vacuum EGR valve open, it is characterised in that：The exhaust gas buffer channel（A）It is transversal
Area is more than exhaust gas flow pass（B）Cross-sectional area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989019.2A CN106286025B (en) | 2016-11-10 | 2016-11-10 | It is anti-to wash vacuum EGR valve open |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610989019.2A CN106286025B (en) | 2016-11-10 | 2016-11-10 | It is anti-to wash vacuum EGR valve open |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286025A CN106286025A (en) | 2017-01-04 |
| CN106286025B true CN106286025B (en) | 2018-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610989019.2A Active CN106286025B (en) | 2016-11-10 | 2016-11-10 | It is anti-to wash vacuum EGR valve open |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0780565A2 (en) * | 1995-12-21 | 1997-06-25 | Denso Corporation | EGR system using a control valve arranged perpendicularly to the axis of an air intake passage |
| CN201747484U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | EGR valve provided with throttle valve |
| CN103382883A (en) * | 2012-03-01 | 2013-11-06 | 曼卡车和巴士奥地利股份公司 | Functional module with exhaust gas turbocharger and exhaust manifold |
| CN206175103U (en) * | 2016-11-10 | 2017-05-17 | 无锡隆盛科技股份有限公司 | Vacuum EGR valve is driven to scour protection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010084749A (en) * | 2008-10-03 | 2010-04-15 | Denso Corp | Exhaust gas recirculation device |
| KR101338272B1 (en) * | 2013-10-23 | 2013-12-09 | 캄텍주식회사 | An egr valve for a vechicle |
-
2016
- 2016-11-10 CN CN201610989019.2A patent/CN106286025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0780565A2 (en) * | 1995-12-21 | 1997-06-25 | Denso Corporation | EGR system using a control valve arranged perpendicularly to the axis of an air intake passage |
| CN201747484U (en) * | 2010-08-17 | 2011-02-16 | 无锡隆盛科技有限公司 | EGR valve provided with throttle valve |
| CN103382883A (en) * | 2012-03-01 | 2013-11-06 | 曼卡车和巴士奥地利股份公司 | Functional module with exhaust gas turbocharger and exhaust manifold |
| CN206175103U (en) * | 2016-11-10 | 2017-05-17 | 无锡隆盛科技股份有限公司 | Vacuum EGR valve is driven to scour protection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286025A (en) | 2017-01-04 |
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