CN201554544U - Asymmetric double flow passage variable cross-section turbocharger - Google Patents
Asymmetric double flow passage variable cross-section turbocharger Download PDFInfo
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- CN201554544U CN201554544U CN2009202496684U CN200920249668U CN201554544U CN 201554544 U CN201554544 U CN 201554544U CN 2009202496684 U CN2009202496684 U CN 2009202496684U CN 200920249668 U CN200920249668 U CN 200920249668U CN 201554544 U CN201554544 U CN 201554544U
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- air inlet
- volute
- runner
- turbine
- flow passage
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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
Abstract
The utility model discloses an asymmetric double flow passage variable cross-section turbocharger, which comprises a turbine shell, a turbine impeller and a turbine shell air inlet flow passage are arranged in the turbine shell, the turbine shell air inlet flow passage is provided with a turbine shell spraying nozzle on the position close to the turbine impeller, the turbine shell air inlet flow passage comprises a turbine shell air inlet small flow passage and a turbine shell air inlet big flow passage, the turbine shell air inlet big flow passage is located on one side of the turbine shell air inlet small flow passage, the asymmetric double flow passage variable cross-section turbocharger improves and designs traditional turbine shells, adopts double air inlet passage combinations, forms different flowing cross sections, and effectively utilizes the waste gas energy of engines. The asymmetric double flow passage variable cross-section turbocharger realizes the same variable cross-section turbine functions through fully utilizing the waste gas energy discharged from the engine. The turbocharger has little changes in overall structure, and has low cost and easy realization.
Description
Technical field
The utility model relates to a kind of exhaust-gas turbocharger that supercharged engine adopts, relate to specifically and a kind ofly can effectively take into account the high low speed boost demand of motor, have the asymmetric double-channel variable section turbocharger that actual internal area differs in size, belong to field of internal combustion engine.
Background technique
Continuous development along with national Abgasgesetz and user's request, the motor especially supercharging technology of diesel engine has also had significant progress, the structure of exhaust-gas turbocharger has developed into the exhaust gas bypass structure pressurized machine that can take into account the low engine speed moment of torsion from traditional constant cross-section, arrived after the enforcement of state III Abgasgesetz, people are more and more stronger for the demand of the engine supercharger that can take into account the high low-speed performance of motor, variable-area turbocharger becomes the emphasis of domestic and international research and development, has generally adopted the inner structure that increases the nozzle vane of rotation of turbine to satisfy the requirement of variable cross section at present.
As Fig. 1, shown in Figure 2, the turbine portion branch of rotary vane type variable geometry turbocharger 1 comprises turbine volute 5, volute nozzle 7 and turbine wheel 9 three parts, the waste gas that motor is discharged under proper functioning is collected by turbine volute 5, flow according to rule by volute air inlet runner 11, be distributed to the periphery of turbine wheel 9 then by volute nozzle 7, promote turbine wheel 9 high speed rotating, under the support of middle case 3 internal float dynamic bearings 12, drive compressor impeller 14 high speed rotating by turbine rotor shaft 13, realize the purpose of final pressurized gas, send into motor after gas after the compression is collected by compressor casing 2 and participate in burning, play the purpose of supercharging.
In order to make pressurized machine can play the purpose of taking into account high low speed operating mode, the turbine inside of rotary vane type variable-area turbocharger 1 is provided with nozzle vane 8 in volute nozzle 7 inside, nozzle vane 8 is distributed on the nozzle ring supporting disk 6 of periphery of turbine wheel 9, adjust aperture a1 by driving mechanism 4, thereby change the actual flow area of volute nozzle 7, change the rotational speed of turbine wheel 9, the high-temperature gas of motor is discharged in the engine exhaust pipeline by volute relief opening 10 after merit is finished in turbine wheel 9 inside.
Rotary vane type variable-area turbocharger 1 changes circulation passage by the aperture a1 that changes between the nozzle vane 8, and control is convenient.But the waste gas that motor is discharged has the delivery temperature about 600 degree, and the trend of further lifting is arranged, and exhaust high temperature all has strict requirement for nozzle vane 8, driving mechanism 4, nozzle ring supporting disk 6 and outside control system; In addition, the turbocharger operation environment is abominable, strong vibration, the particle in the engine exhaust and sulphide etc. have high requirement to the reliability of driving mechanism, have limited the market of the type variable-area turbocharger in cost and working life, only be used in high-end engine booster field, marketing pressure is big.
Therefore, wish a kind of turbine that can change the turbosupercharger of passage section of design, solve the problem that the variable cross section pressurized machine of present swivel nozzle blade structure exists aspect reliability and efficient.By the structure of turbine volute flow passage of design, change turbine internal high temperature gas flow organizational form, simple and effective realization motor is to the needs of variable cross section turbine, to satisfy under different operating modes motor to the needs of boost pressure.
The model utility content
Problem to be solved in the utility model is the narrow limitation at conventional variable cross section turbosupercharger, a kind of asymmetric double-channel variable section turbocharger is provided, effectively solve the use defective of traditional pressurized machine constant cross-section, reduce the complicated adjusting structure simultaneously and improve turbine efficiency.
In order to address the above problem, the utility model by the following technical solutions:
A kind of asymmetric double-channel variable section turbocharger, comprise the turbine volute, be provided with turbine wheel and volute air inlet runner in the turbine volute, the volute air inlet runner is provided with the volute nozzle near the position of turbine wheel, described volute air inlet runner comprises volute air inlet small flow channels and the big runner of volute air inlet, and the big runner of described volute air inlet is positioned at volute air inlet small flow channels one side.
The little air inlet runner of described volute is positioned at turbine volute one side, and the cross section is fixed, and satisfies motor middle and slow speed of revolution boost demand, and the pressure ratio when improving low engine speed also guarantees that motor has good acceleration performance.
Below be the utility model for further improvement of these options:
The flow area of described volute air inlet small flow channels is less than the flow area of the big runner of volute air inlet.
Further improve:
Be provided with the runner midfeather between described volute air inlet small flow channels and the big runner of volute air inlet.
Big runner of described volute air inlet and volute air inlet small flow channels link together by midfeather, have independently air current flow passage separately.
Further improve:
Described runner midfeather is provided with and makes volute air inlet small flow channels and the suction port that the big runner of volute air inlet is communicated with, and the air inlet adjustment valve is installed on suction port.
Regulate the selection of volute air inlet runner by controlling device, thereby realize the variation of turbocharger turbine flow area.
Further improve:
The exit portion that described volute air inlet small flow channels is communicated with the volute nozzle is provided with guide surface in the small flow channels air-flow, the exit portion that the big runner of described volute air inlet is communicated with the volute nozzle is provided with guide surface in the big runner air-flow, and the outlet that forms between the guide surface in guide surface and the big runner air-flow in the described small flow channels air-flow becomes to reduce shape.
The terminal wall of described volute midfeather both sides is parallel as far as possible, and its shape makes the exit flow direction of volute air inlet small flow channels and the big runner of volute air inlet as far as possible towards turbine, and reduces the mutual interference of two bursts of air current flow phases effectively.
Further improve:
One end of described runner midfeather is connected with turbine volute one, and its other end is a free end, its section thickness from the end that is connected with the turbine volute to free end attenuation gradually.
Described volute midfeather is and reduces shape, has certain wall thickness and leaves machining allowance for guaranteeing its end of effective casting.
As further improving:
For further improving the low speed operating mode, it is littler that described volute air inlet small flow channels and the big runner of volute air inlet can design.
For guaranteeing that pressurized machine does not exceed the speed limit; the big runner of described volute air inlet is provided with by-pass hole; bypath valve is installed in by-pass hole, after engine displacement exceeds volute air inlet small flow channels and the big runner regulating power of volute air inlet, carries out the self-protection of pressurized machine by bypath valve.
The utility model has adopted two gas-entered passageway combinations by the conventional turbine volute is carried out improvement and design, has formed different passage sections, effectively utilizes the exhaust energy of motor.Asymmetric double runner variable geometry turbocharger in the utility model can just be set up higher pressure ratio when low engine speed, and has higher efficient than rotary vane type variable-area turbocharger.Double-channel variable section turbine in the utility model has made full use of conventional turbocharger arrangement, has realized the function of variable geometry turbocharger by improving traditional runner, has taken into account the advantage with broad range of flow of conventional vaneless diffuser simultaneously.Variable geometry turbocharger inheritance in the utility model is good, simple in structure, and upgrade easily switching, cost of product is low, realizes through engineering approaches easily fast.
To sum up, adopt variable geometry turbocharger can effectively satisfy the boost demand of the full operating mode scope of motor, do not need to be provided with the complicated pneumatic regulation structure of rotary vane type simultaneously with asymmetric double runner.This model utility makes full use of by exhaust energy that motor is discharged, has realized identical variable geometry turbocharger function.Big variation does not take place in the supercharger integrated structure of the type, and cost is low, realizes easily.
Below in conjunction with drawings and Examples the utility model patent is further described:
Description of drawings
Accompanying drawing 1 is the structural representation of rotary vane type variable-area turbocharger in the background technique;
Accompanying drawing 2 is vane regulation structure schematic representation of rotary vane type variable-area turbocharger in the background technique;
Accompanying drawing 3 is structural representations of asymmetric double runner variable geometry turbocharger among the utility model embodiment 1;
Accompanying drawing 4 is structural representations of air inlet adjustment valve in the asymmetric double runner variable geometry turbocharger among the utility model embodiment 1;
Accompanying drawing 5 is another kind of structural representations of asymmetric double runner variable geometry turbocharger among the utility model embodiment 1;
Accompanying drawing 6 is by-pass structure schematic representation in the asymmetric double runner variable geometry turbocharger among the utility model embodiment 2;
Among the figure: 1-rotary vane type variable geometry turbocharger, the 2-compressor casing, the 3-middle case, the 4-driving mechanism, 5-turbine volute, 6-nozzle ring supporting disk, 7-volute nozzle, the 8-nozzle vane, the 9-turbine wheel, 10-volute relief opening, 11-volute air inlet runner, the 12-floating bearing, the 13-turbine rotor shaft, the 14-compressor impeller, 16-volute air inlet small flow channels, guide surface in the 17-small flow channels air-flow, 18-runner midfeather, guide surface in the big runner air-flow of 19-, the big runner of 20-volute air inlet, 21-volute inlet flange, 22-air inlet adjustment valve, 23-valve mounting hole cover plate, the big runner by-pass hole of 25-volute air inlet, the 26-bypath valve.
Embodiment
Embodiment 1, as shown in Figure 3, Figure 4, a kind of asymmetric double-channel variable section turbocharger, comprise turbine volute 5, be provided with turbine wheel 9 and volute air inlet runner in the turbine volute 5, turbine wheel 9 is installed on the turbine rotor shaft 13, and the volute air inlet runner is provided with volute nozzle 7 near the position of turbine wheel 9, the volute air inlet runner comprises volute air inlet small flow channels 16 and the big runner 20 of volute air inlet, and the big runner 20 of volute air inlet is positioned at volute air inlet small flow channels one side 16.Be provided with volute air inlet runner midfeather 18 in the middle of the big runner 20 of volute air inlet small flow channels 16 and volute air inlet, volute air inlet small flow channels 16 is used in the full operating mode scope of motor,
Runner midfeather 18 is provided with the suction port that the big runner 20 of volute air inlet small flow channels 16 and volute air inlet is communicated with, air inlet adjustment valve 22 is installed on suction port, side at the big runner 20 of volute air inlet is provided with valve mounting hole cover plate 23, and the big runner 20 of volute air inlet high rotating speed in motor is opened by the air inlet adjustment valve 22 of turbine volute 5 and used.
One end of runner midfeather 18 is connected with turbine volute 5 one, and its other end is a free end, its cross section from the end that is connected with turbine volute 5 to free end attenuation gradually.
The exit portion that volute air inlet small flow channels 16 is communicated with volute nozzle 7 is provided with guide surface 17 in the small flow channels air-flow, and its actual internal area satisfies the low engine speed boost demand; The exit portion that is communicated with volute nozzle 7 of the big runner 20 of volute air inlet be provided with guide surface 19 in the big runner air-flow, the outlet that forms between the guide surface 19 in guide surface 17 and the big runner air-flow in the small flow channels air-flow is reduces shape, try one's best keeping parallelism and guarantee certain moulding by casting thickness of the two side walls of the trailing edge of runner midfeather 18 makes the exit flow of volute air inlet small flow channels and the big runner of volute air inlet that mutual interference not take place as far as possible.The high-temp waste gas that passes through from volute air inlet small flow channels 16 and the big runner 20 of volute air inlet enters and promotes turbine wheel 9 rotation actings by volute nozzle 7.
The position of volute air inlet small flow channels 16 and the big runner 20 of volute air inlet can exchange, as shown in Figure 5, volute air inlet small flow channels 16 can be positioned at turbine wheel import wheel rim one side, the big runner 20 of volute air inlet is positioned at turbine wheel import wheel hub one side, and this structure can make things convenient for installation and the layout of pressurized machine on motor.
The exhaust energy that motor is discharged enters 5 work of turbine volute by inlet flange 21, air inlet adjustment valve 22 is realized cooperating with gas flow modulation mechanism, air inlet adjustment valve 22 is closed when low engine speed, waste gas only enters turbine work by air inlet small flow channels 16, air inlet adjustment valve 22 is opened when the motor high speed, its aperture is by the gas flow modulation mechanism controls, thereby controls the selection and the unlatching of big or small runner, realizes the function of variable geometry turbocharger.
The utility model patent is at the needs of turbosupercharger to variable geometry turbocharger, finished the exploitation of the variable geometry turbocharger of finishing by asymmetric double volute air inlet runner, effectively utilize exhaust energy, taken into account the boost demand under low engine speed and the high speed operating mode.The turbosupercharger variable geometry turbocharger that the type has asymmetric double volute air inlet runner can adopt the existing casting and the processing technique of similar pressurized machine use to finish.
For making things convenient for the mounting arrangements of turbosupercharger, the position of big runner 20 of volute air inlet and volute air inlet small flow channels 16 can exchange.Can arrange that the big runner 20 of volute air inlet is positioned at turbine wheel import wheel rim one side as Figure of description 3, volute air inlet small flow channels 16 is positioned at turbine wheel import wheel hub one side; Can arrange that also the big runner 20 of volute air inlet is positioned at turbine hub one side as Figure of description 5, volute air inlet small flow channels 16 is positioned at turbine wheel import wheel rim one side.
The utility model patent is at the needs of turbosupercharger to variable geometry turbocharger, finished the exploitation of the bypass asymmetric double runner variable geometry turbocharger of finishing by asymmetric double volute air inlet runner, not only effectively utilized the exhaust energy of motor, taken into account the boost demand under low engine speed and the high-speed working condition, and made the Cross section Design of volute air inlet small flow channels and the big runner of volute air inlet have more flexibility to better meet the boost demand of motor under each operating mode.The turbosupercharger variable geometry turbocharger that the type has asymmetric double volute air inlet runner can adopt the existing casting and the processing technique of similar pressurized machine use to finish.
We have been described in detail the utility model according to the national patent method now, can discern the improvement or the replacement of specific embodiment disclosed herein for those of ordinary skill in the art.These modifications are in spirit and scope of the present utility model.
Claims (7)
1. asymmetric double-channel variable section turbocharger, comprise turbine volute (5), be provided with turbine wheel (9) and volute air inlet runner in the turbine volute (5), the volute air inlet runner is provided with volute nozzle (7) near the position of turbine wheel (9), it is characterized in that: described volute air inlet runner comprises volute air inlet small flow channels (16) and the big runner of volute air inlet (20), and the big runner of described volute air inlet (20) is positioned at volute air inlet small flow channels (16) one sides.
2. a kind of asymmetric double-channel variable section turbocharger according to claim 1 is characterized in that: the flow area of described volute air inlet small flow channels (16) is less than the flow area of the big runner of volute air inlet (20).
3. a kind of asymmetric double-channel variable section turbocharger according to claim 1 and 2 is characterized in that: be provided with runner midfeather (18) between described volute air inlet small flow channels (16) and the big runner of volute air inlet (20).
4. a kind of asymmetric double-channel variable section turbocharger according to claim 3, it is characterized in that: described runner midfeather (18) is provided with and makes volute air inlet small flow channels (16) and the suction port that the big runner of volute air inlet (20) is communicated with, and air inlet adjustment valve (22) is installed on suction port.
5. a kind of asymmetric double-channel variable section turbocharger according to claim 3, it is characterized in that: the exit portion that described volute air inlet small flow channels (16) is communicated with volute nozzle (7) is provided with guide surface (17) in the small flow channels air-flow, the exit portion that the big runner of described volute air inlet (20) is communicated with volute nozzle (7) is provided with guide surface (19) in the big runner air-flow, and the outlet that forms between the guide surface (19) in guide surface (17) and the big runner air-flow in the described small flow channels air-flow is reduces shape.
6. a kind of asymmetric double-channel variable section turbocharger according to claim 3, it is characterized in that: an end of described runner midfeather (18) is connected with turbine volute (5) one, its the other end is a free end, its section thickness from the end that is connected with turbine volute (5) to free end attenuation gradually.
7. a kind of asymmetric double-channel variable section turbocharger according to claim 3 is characterized in that: the big runner of described volute air inlet (20) is provided with by-pass hole (25), and bypath valve (26) is installed in by-pass hole (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202496684U CN201554544U (en) | 2009-10-23 | 2009-10-23 | Asymmetric double flow passage variable cross-section turbocharger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202496684U CN201554544U (en) | 2009-10-23 | 2009-10-23 | Asymmetric double flow passage variable cross-section turbocharger |
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| CN201554544U true CN201554544U (en) | 2010-08-18 |
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| CN2009202496684U Expired - Lifetime CN201554544U (en) | 2009-10-23 | 2009-10-23 | Asymmetric double flow passage variable cross-section turbocharger |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557069A (en) * | 2013-11-13 | 2014-02-05 | 中国北方发动机研究所(天津) | Switchable double-inlet asymmetric turbine volute |
| CN110735673A (en) * | 2019-11-18 | 2020-01-31 | 大连海事大学 | kinds of double-channel volute |
-
2009
- 2009-10-23 CN CN2009202496684U patent/CN201554544U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557069A (en) * | 2013-11-13 | 2014-02-05 | 中国北方发动机研究所(天津) | Switchable double-inlet asymmetric turbine volute |
| CN110735673A (en) * | 2019-11-18 | 2020-01-31 | 大连海事大学 | kinds of double-channel volute |
| CN110735673B (en) * | 2019-11-18 | 2021-10-26 | 大连海事大学 | Double-channel volute |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: KANGYUE TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHOUGUANG KANGYUE TURBOCHARGER CO., LTD. Effective date: 20101111 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 262711 GUCHENG SUBDISTRICT OFFICE, SHOUGUANG CITY, SHANDONG PROVINCE TO: 262700 SCIENCE AND TECHNOLOGY INDUSTRIAL PARK, DEVELOPMENT AREA, SHOUGUANG CITY, SHANDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101111 Address after: 262700 science and Technology Industrial Zone, Shouguang Development Zone, Shandong Patentee after: Kangyue Technology Co., Ltd. Address before: 262711 Shouguang City, Shandong Province ancient city streets do Patentee before: Shouguang Kangyue Turbocharger Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100818 |