CN101694178A - Asymmetric double-channel variable section turbocharger - Google Patents

Asymmetric double-channel variable section turbocharger Download PDF

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Publication number
CN101694178A
CN101694178A CN200910208182A CN200910208182A CN101694178A CN 101694178 A CN101694178 A CN 101694178A CN 200910208182 A CN200910208182 A CN 200910208182A CN 200910208182 A CN200910208182 A CN 200910208182A CN 101694178 A CN101694178 A CN 101694178A
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CN
China
Prior art keywords
volute
air inlet
runner
turbine
turbocharger
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.)
Pending
Application number
CN200910208182A
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Chinese (zh)
Inventor
朱智富
李永泰
王航
李延昭
郭锡禄
杨恒星
郭伦海
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Kangyue Technology Co Ltd
Original Assignee
SHOUGUANG KANGYUE TURBOCHARGER CO Ltd
Priority date (The priority date 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 date listed.)
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Application filed by SHOUGUANG KANGYUE TURBOCHARGER CO Ltd filed Critical SHOUGUANG KANGYUE TURBOCHARGER CO Ltd
Priority to CN200910208182A priority Critical patent/CN101694178A/en
Publication of CN101694178A publication Critical patent/CN101694178A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The invention discloses an asymmetric double-channel variable section turbocharger, comprising a turbine volute which is internally provided with a turbine impeller and a volute gas inlet channel; the volute gas inlet channel is provided with a volute nozzle at the position close to the turbine impeller; and the volute gas inlet channel comprises a small volute gas inlet channel and a large volute gas inlet channel which is positioned at one side of the small volute gas inlet channel. The asymmetric double-channel variable section turbocharger carries out modification and designing on the traditional turbine volute, adopts the combination of double gas inlet channels, and forms different through flow sections, and effectively utilizes the energy of waste gas of an engine. By fully utilizing the energy of waste gas exhausted by the engine, the asymmetric double-channel variable section turbocharger realizes the same variable section turbine function, can not change the whole structure greatly, and has low cost and easy realization.

Description

Asymmetric double-channel variable section turbocharger
Technical field
The present invention 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.
Summary of the invention
Problem to be solved by this invention 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 present invention 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 further improvement of these options of the present invention:
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 present invention 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 among the present invention 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 among the present invention 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 among the present invention 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 invention 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 patent of the present invention 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 in the embodiment of the invention 1;
Accompanying drawing 4 is structural representations of air inlet adjustment valve in the asymmetric double runner variable geometry turbocharger in the embodiment of the invention 1;
Accompanying drawing 5 is another kind of structural representations of asymmetric double runner variable geometry turbocharger in the embodiment of the invention 1;
Accompanying drawing 6 is by-pass structure schematic representation in the asymmetric double runner variable geometry turbocharger in the embodiment of the invention 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.
Patent of the present invention has been finished the exploitation of the variable geometry turbocharger of being finished by asymmetric double volute air inlet runner at the needs of turbosupercharger to variable geometry turbocharger, has effectively utilized exhaust energy, has 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.
Embodiment 2; as shown in Figure 6; consider the Security under the racing of the engine operating mode; can be provided with by-pass hole 25 on the big runner 20 in the volute air inlet among the embodiment 1; bypass valve 26 is installed in by-pass hole 25; the by-pass hole 25 of volute intake duct open or close by bypath valve 26; thereby the pressure of big runner 20 internal gas flows of control volute air inlet; bypass venting after the engine exhaust flow is above the through-current capability sum of air inlet small flow channels 16 and the big runner 20 of air inlet avoids the pressurized machine hypervelocity to realize the purpose of protection pressurized machine.
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.
Patent of the present invention 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 present invention 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 within the spirit and scope of the present invention.

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 one side (16).
2. according to claims 1 described asymmetric double-channel variable section turbocharger, it 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. according to claims 1 or 2 described asymmetric double-channel variable section turbochargers, it 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. according to claims 3 described asymmetric double-channel variable section turbochargers, 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. 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. 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. 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).
CN200910208182A 2009-10-23 2009-10-23 Asymmetric double-channel variable section turbocharger Pending CN101694178A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101985897A (en) * 2010-09-14 2011-03-16 康跃科技股份有限公司 Complex turbine device with variable section
WO2013049971A1 (en) * 2011-10-08 2013-04-11 Zhu Zhifu Volute device of variable geometry pulse gas inlet turbine
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
CN104838109A (en) * 2012-12-21 2015-08-12 博格华纳公司 Mixed flow twin scroll turbocharger with single valve
CN106089405A (en) * 2016-07-29 2016-11-09 中国北方发动机研究所(天津) A kind of Novel supercharger structure with two-sided turbine
CN110735673A (en) * 2019-11-18 2020-01-31 大连海事大学 kinds of double-channel volute
US10662904B2 (en) 2018-03-30 2020-05-26 Deere & Company Exhaust manifold
US11073076B2 (en) 2018-03-30 2021-07-27 Deere & Company Exhaust manifold

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101985897A (en) * 2010-09-14 2011-03-16 康跃科技股份有限公司 Complex turbine device with variable section
WO2012034258A1 (en) * 2010-09-14 2012-03-22 Zhu Zhifu Variable-section composite turbine apparatus
WO2013049971A1 (en) * 2011-10-08 2013-04-11 Zhu Zhifu Volute device of variable geometry pulse gas inlet turbine
CN104838109A (en) * 2012-12-21 2015-08-12 博格华纳公司 Mixed flow twin scroll turbocharger with single valve
US20150315961A1 (en) * 2012-12-21 2015-11-05 Borgwarner Inc. Mixed flow twin scroll turbocharger with single valve
US10006345B2 (en) * 2012-12-21 2018-06-26 Borgwarner Inc. Mixed flow twin scroll turbocharger with single valve
CN104838109B (en) * 2012-12-21 2018-06-01 博格华纳公司 Mixed flow binary vortices turbocharger with single valve
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
CN106089405A (en) * 2016-07-29 2016-11-09 中国北方发动机研究所(天津) A kind of Novel supercharger structure with two-sided turbine
CN106089405B (en) * 2016-07-29 2019-02-01 中国北方发动机研究所(天津) A kind of novel supercharger structure with two-sided turbine
US10662904B2 (en) 2018-03-30 2020-05-26 Deere & Company Exhaust manifold
US11073076B2 (en) 2018-03-30 2021-07-27 Deere & Company Exhaust manifold
CN110735673A (en) * 2019-11-18 2020-01-31 大连海事大学 kinds of double-channel volute

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