CN107905854B - Supercharger turbine box capable of improving low-speed performance - Google Patents
Supercharger turbine box capable of improving low-speed performance Download PDFInfo
- Publication number
- CN107905854B CN107905854B CN201711397482.9A CN201711397482A CN107905854B CN 107905854 B CN107905854 B CN 107905854B CN 201711397482 A CN201711397482 A CN 201711397482A CN 107905854 B CN107905854 B CN 107905854B
- Authority
- CN
- China
- Prior art keywords
- flow passage
- runner
- partition
- rotary valve
- turbine box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000002912 waste gas Substances 0.000 claims abstract description 7
- 230000002708 enhancing effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a turbocharger turbine box capable of improving low-speed performance, which comprises a turbine box and an inner flow passage communicated with the inner cavity of the turbine box, wherein a partition is arranged in the middle of the inner flow passage to divide the inner flow passage into a large flow passage and a small flow passage with unequal cross-sectional areas, the side part of the large flow passage is also communicated with a waste gas relief valve of a side bypass, a yielding groove is arranged at the partition of the area section where the waste gas relief valve is positioned, a rotary valve is arranged in the yielding groove, and the rotary driving end of the rotary valve penetrates through the wall of the turbine box and is connected with an external rotation driving device; when the rotary valve rotates to a position parallel to the partition, the large runner and the small runner can be partitioned, and when the rotary valve rotates to a position not parallel to the partition, air inlet in the small runner flows into the large runner.
Description
Technical Field
The invention relates to the field of turbine boxes, in particular to a turbocharger turbine box capable of improving low-speed performance, which can be widely applied to the technical field of automobile engines.
Background
With the increasingly strong competition of the engine market and the increasingly prominent environmental problems, the performance requirements on the vehicle and the off-road machinery are increasingly improved. As a main performance component of the engine, the requirements on performance characteristics of the supercharger are increasing. The pulse exhaust characteristic of the engine is better utilized, the better low-speed performance is obtained, and meanwhile, the higher low-speed EGR rate is realized to meet the national sixth emission requirement, which is the key of the development of the supercharging technology.
Referring to fig. 1 to 3, the two flow passages 2a, 2b of the turbocharger turbine housing 1 at present are both communicated with the side bypass exhaust gas bleed valve 3, and cannot effectively control the formation of higher pre-vortex temperature and pre-vortex pressure, and thus cannot effectively improve the EGR rate thereof.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provide a turbocharger turbine box capable of improving low-speed performance, the turbocharger using the turbine box can effectively improve the performances of oil consumption, torque and the like of an engine at a low speed, and the low-speed EGR rate of the engine with EGR can be obviously improved, so that the emission performance is improved.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
the utility model provides a can improve booster turbine case of low-speed performance, includes turbine case and with the inside runner of turbine case inner chamber intercommunication, its characterized in that, the middle part of inside runner is provided with cuts off in order to separate inside runner into big runner and little runner that cross-section area is unequal, the lateral part of big runner still communicates with the waste gas bleed valve of lateral part bypass, is located the partition department of the regional section of waste gas bleed valve is provided with the groove of stepping down, be provided with rotary valve in the groove of stepping down, rotary drive end of rotary valve passes turbine case wall after being connected with outside rotation drive arrangement; when the rotary valve rotates to a position parallel to the partition, the large runner and the small runner can be partitioned, and when the rotary valve rotates to a position not parallel to the partition, air inlet in the small runner flows into the large runner.
In a preferred embodiment of the invention, the large flow passage is located on the turbine outlet side and the small flow passage is located on the bearing body side.
Compared with the prior art, the invention has the following characteristics:
1. on the premise of keeping the performance of the original supercharger, the low-speed performance of the whole engine can be improved, and the emission of nitrogen, oxygen and carbon and hydrogen of the engine can be reduced; the overspeed of the supercharger is not caused by the adjustment of the rotary valve at high speed;
2. the casting method of the traditional turbine box can be used for production and trial production, and has low cost and good reliability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a prior art supercharger turbine housing.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a cross-sectional view of fig. 2.
Fig. 4 is a schematic structural diagram of an embodiment of the present invention.
Fig. 5 is a side view of fig. 4.
Fig. 6 is a cross-sectional view of fig. 4.
Fig. 7 is a cross-sectional view of fig. 5.
Detailed Description
The invention is further described below in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Referring to fig. 4 to 7, a turbocharger turbine housing capable of improving low speed performance includes a turbine housing 10 and an internal flow passage 20 communicating with an inner cavity of the turbine housing 10. The middle part of the inner flow passage 20 is provided with a partition 30 to partition the inner flow passage 20 into a large flow passage 21 and a small flow passage 22 having unequal cross-sectional areas, the large flow passage 21 being located at the turbine outlet side, and the small flow passage 22 being located at the bearing body side. The side of the large flow passage 21 is also in communication with a side bypass exhaust gas bleed valve 40. The partition 30 at the section of the exhaust gas release valve 40 is provided with a relief groove 31, a rotary valve 50 is arranged in the relief groove 31, and a rotary driving end 51 of the rotary valve 50 penetrates through the wall of the turbine box and is connected with an external rotation driving device.
The exhaust gas bleed valve 40 communicates only with the large runner 21, and the small runner 22 does not participate in the bleed. The intake states of the two flow passages and the intake amount can be adjusted by rotating the valve 50.
The working principle of the invention is as follows:
when the rotary valve 50 is combined with the engine to work at a low speed, the rotary valve 50 rotates to the middle (namely, the rotary valve is parallel to a partition), so that the two flow passages work independently, the small flow passage 22 has higher pre-vortex pressure and pre-vortex temperature, and an EGR pipe inlet is connected to the small flow passage 22, so that the EGR rate of the engine can be improved, and the emission is improved; at high speed, the intake air on the side of the small flow passage 22 is caused to flow into the large flow passage 21 by the rotation of the rotary valve 50, so that the pressure in the small flow passage 22 is prevented from being excessively high, and the supercharger is prevented from exceeding Wen Chaosu.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a can improve booster turbine case of low-speed performance, includes turbine case and with the inside runner of turbine case inner chamber intercommunication, its characterized in that, the middle part of inside runner is provided with cuts off in order to separate inside runner into big runner and little runner that cross-section area is unequal, the lateral part of big runner still communicates with the waste gas bleed valve of lateral part bypass, is located the partition department of the regional section of waste gas bleed valve is provided with the groove of stepping down, be provided with rotary valve in the groove of stepping down, rotary drive end of rotary valve passes turbine case wall after being connected with outside rotation drive arrangement; when the rotary valve rotates to a position parallel to the partition, the large flow passage and the small flow passage can be partitioned, and when the rotary valve rotates to a position not parallel to the partition, the air inlet in the small flow passage flows into the large flow passage; the waste gas deflating valve is only communicated with the large flow passage, and the small flow passage does not participate in deflation.
2. A turbocharger turbine housing for enhancing low speed performance as claimed in claim 1, wherein said large flow passage is located on the turbine outlet side and said small flow passage is located on the bearing body side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397482.9A CN107905854B (en) | 2017-12-21 | 2017-12-21 | Supercharger turbine box capable of improving low-speed performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397482.9A CN107905854B (en) | 2017-12-21 | 2017-12-21 | Supercharger turbine box capable of improving low-speed performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107905854A CN107905854A (en) | 2018-04-13 |
| CN107905854B true CN107905854B (en) | 2024-03-19 |
Family
ID=61870726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397482.9A Active CN107905854B (en) | 2017-12-21 | 2017-12-21 | Supercharger turbine box capable of improving low-speed performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107905854B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952361A (en) * | 2005-10-21 | 2007-04-25 | 三菱重工业株式会社 | Exhaust turbo-supercharger |
| CN102536433A (en) * | 2012-01-11 | 2012-07-04 | 康跃科技股份有限公司 | Staged flow-adjustable turbine shell |
| CN103244208A (en) * | 2013-05-15 | 2013-08-14 | 无锡康明斯涡轮增压技术有限公司 | Turbocharger volute assembly |
| CN104895667A (en) * | 2015-02-25 | 2015-09-09 | 康跃科技股份有限公司 | Variable-section exhaust gas bypass turbine for meeting demand of EGR (exhaust gas recirculation) recirculation |
| DE102015003296A1 (en) * | 2015-03-14 | 2015-12-03 | Daimler Ag | Exhaust gas turbocharger for an internal combustion engine and method for operating such an exhaust gas turbocharger |
| CN106121748A (en) * | 2016-08-30 | 2016-11-16 | 湖南天雁机械有限责任公司 | Turbocharger pressure shell with air inlet and gas outlet connector |
| CN207673386U (en) * | 2017-12-21 | 2018-07-31 | 湖南天雁机械有限责任公司 | A kind of supercharger worm-gear case that low-speed performance can be improved |
-
2017
- 2017-12-21 CN CN201711397482.9A patent/CN107905854B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1952361A (en) * | 2005-10-21 | 2007-04-25 | 三菱重工业株式会社 | Exhaust turbo-supercharger |
| CN102536433A (en) * | 2012-01-11 | 2012-07-04 | 康跃科技股份有限公司 | Staged flow-adjustable turbine shell |
| CN103244208A (en) * | 2013-05-15 | 2013-08-14 | 无锡康明斯涡轮增压技术有限公司 | Turbocharger volute assembly |
| CN104895667A (en) * | 2015-02-25 | 2015-09-09 | 康跃科技股份有限公司 | Variable-section exhaust gas bypass turbine for meeting demand of EGR (exhaust gas recirculation) recirculation |
| DE102015003296A1 (en) * | 2015-03-14 | 2015-12-03 | Daimler Ag | Exhaust gas turbocharger for an internal combustion engine and method for operating such an exhaust gas turbocharger |
| CN106121748A (en) * | 2016-08-30 | 2016-11-16 | 湖南天雁机械有限责任公司 | Turbocharger pressure shell with air inlet and gas outlet connector |
| CN207673386U (en) * | 2017-12-21 | 2018-07-31 | 湖南天雁机械有限责任公司 | A kind of supercharger worm-gear case that low-speed performance can be improved |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107905854A (en) | 2018-04-13 |
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