CN207673385U - A kind of supercharger worm-gear case that engine EGR rate can be improved - Google Patents
A kind of supercharger worm-gear case that engine EGR rate can be improved Download PDFInfo
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- CN207673385U CN207673385U CN201721806905.3U CN201721806905U CN207673385U CN 207673385 U CN207673385 U CN 207673385U CN 201721806905 U CN201721806905 U CN 201721806905U CN 207673385 U CN207673385 U CN 207673385U
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- Prior art keywords
- flow
- turbine box
- egr rate
- improved
- opening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a kind of supercharger worm-gear cases that engine EGR rate can be improved, the inner flow passage being connected to including turbine box and with the turbine box cavity, it is characterized in that, partition is provided in the middle part of the inner flow passage so that the inner flow passage is divided into the big runner and small flow channels that area of section does not wait, the side of the turbine box is additionally provided with pressure balance chamber, the pressure balance chamber bottom has two flow-through openings, it is provided with coupling cock on two flow-through opening, the coupling cock is connect with external driver device realizes opening and closing action, the big runner and small flow channels pass through first respectively, it is individually docked with two flow-through opening after second ramp way.
Description
Technical field
The utility model is related to turbine box field, more particularly to a kind of supercharger worm-gear case that engine EGR rate can be improved,
It can be widely applied to supercharging technology field.
Background technology
With the upgrading of emission regulation and the anxiety of energy resources, the technology of vehicle supercharger is required further carrying
It is high.To meet six emission request of state, engine needs to use EGR technology more, and it is that each main engine plants are badly in need of solving to improve low speed EGR rate
Technical problem.
Utility model content
The purpose of this utility model is that for the above-mentioned insufficient and defect of the prior art, one kind is provided, engine can be improved
The supercharger worm-gear case of EGR rate, can effectively improve the low speed EGR rate and overall performance of engine, and then meet higher discharge
Laws and regulations requirement and dynamic property requirement.
Following technical scheme may be used to realize in the technical issues of the utility model is solved：
A kind of supercharger worm-gear case that engine EGR rate can be improved, including turbine box and be connected to the turbine box cavity
Inner flow passage, which is characterized in that be provided in the middle part of the inner flow passage partition the inner flow passage is divided into section
Equal big runner and small flow channels, the side of the turbine box are not additionally provided with pressure balance chamber, the pressure balance bottom of chamber to area
Portion has two flow-through openings, and coupling cock is provided on two flow-through opening, and the coupling cock connect real with external driver device
Now opening and closing act, and the big runner and small flow channels after the first, second ramp way with two circulation respectively by opening
Mouth individually docking.
In a preferred embodiment of the utility model, second ramp way is before the air-flow in the small flow channels
It is stepped up into direction, air-flow direction of advance of first ramp way in the big runner gradually reduces.
The utility model has following features compared with prior art：
1. under the premise of keeping former booster performance, the low-speed performance of complete machine can be improved, reduce engine nitrogen oxygen, hydrocarbon
Discharge；In high speed by the adjusting of coupling cock, booster will not be caused to exceed the speed limit.
2. the casting method of usable conventional turbine case is produced, manufactured experimently, cost is relatively low；Reliability is good.
3. the staggered form unicom structure between coupling cock and the first, second ramp way, it is ensured that small flow channels gas is more smooth
The big runner of entrance, reduce flow losses.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of structural schematic diagram of embodiment of the utility model.
Fig. 2 is the A-A of Fig. 1 to sectional view.
Fig. 3 is the B-B direction sectional view of Fig. 1.
Specific implementation mode
In order to make the technical means, creative features, achievement of purpose, and effectiveness of the utility model be easy to understand, under
The utility model is expanded on further in face.
Referring to Fig. 1 to a kind of supercharger worm-gear case that engine EGR rate can be improved shown in Fig. 3, including 10 He of turbine box
The inner flow passage being connected to 10 inner cavity of turbine box.Partition 30 is provided in the middle part of inner flow passage so that inner flow passage is divided into section
The big runner 21 and small flow channels 22 that area does not wait.The side of turbine box 10 is additionally provided with pressure balance chamber 40, pressure balance chamber 40
Bottom has two flow-through openings 41,42, is provided with coupling cock (not shown) on two flow-through openings 41,42, coupling cock with it is outer
Opening and closing action is realized in driving device connection in portion, and external driver device is that machine is mechanical or automatically controlled formula device.Big runner 21
With small flow channels 22 respectively by individually being docked with two flow-through openings 41,42 after the first, second ramp way 51,52.
The operation principle of the utility model is as follows：
When coupling cock is opened, pressure balance chamber 40 and the first, second ramp way 51,52 are in unicom state, big runner
21 and small flow channels 22 can pass through pressure balance chamber 40 carry out gas exchanges；When coupling cock is closed, pressure balance chamber 40 and first, the
Two ramp ways 51,52 are in partition state, pressure balance chamber 40 and gas friendship cannot be carried out between runner 21 and small flow channels 22 greatly
It changes.Air-flow direction of advance of second ramp way 52 in small flow channels 22 is stepped up, substantially same with 22 airintake direction of small flow channels
To, air-flow direction of advance of first ramp way 51 in big runner 21 gradually reduces, with small flow channels 22 to big runner 21 into
Gas direction is substantially in the same direction, it is ensured that the big runner 21 of the more smooth entrance of 22 gas of small flow channels reduces flow losses.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (2)
1. a kind of supercharger worm-gear case that engine EGR rate can be improved, including turbine box and it is connected to the turbine box cavity
Inner flow passage, which is characterized in that partition is provided in the middle part of the inner flow passage so that the inner flow passage is divided into section face
The big runner and small flow channels, the side of the turbine box that product does not wait are additionally provided with pressure balance chamber, the pressure balance chamber bottom
With two flow-through openings, coupling cock is provided on two flow-through opening, the coupling cock connect realization with external driver device
Opening and closing act, the big runner and small flow channels respectively by after the first, second ramp way with two flow-through opening
Individually docking.
2. a kind of supercharger worm-gear case that engine EGR rate can be improved as described in claim 1, which is characterized in that described the
Air-flow direction of advance of two ramp ways in the small flow channels is stepped up, and first ramp way is along the big runner
Air-flow direction of advance gradually reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721806905.3U CN207673385U (en) | 2017-12-21 | 2017-12-21 | A kind of supercharger worm-gear case that engine EGR rate can be improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721806905.3U CN207673385U (en) | 2017-12-21 | 2017-12-21 | A kind of supercharger worm-gear case that engine EGR rate can be improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673385U true CN207673385U (en) | 2018-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721806905.3U Active CN207673385U (en) | 2017-12-21 | 2017-12-21 | A kind of supercharger worm-gear case that engine EGR rate can be improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207673385U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956521A (en) * | 2017-12-21 | 2018-04-24 | 湖南天雁机械有限责任公司 | A kind of supercharger worm-gear case for improving engine EGR rate |
-
2017
- 2017-12-21 CN CN201721806905.3U patent/CN207673385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956521A (en) * | 2017-12-21 | 2018-04-24 | 湖南天雁机械有限责任公司 | A kind of supercharger worm-gear case for improving engine EGR rate |
| CN107956521B (en) * | 2017-12-21 | 2024-03-19 | 湖南天雁机械有限责任公司 | Supercharger turbine box capable of improving EGR rate of engine |
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