CN102003272B - Double-channel air exhausting device of double-flow channel turbocharger - Google Patents
Double-channel air exhausting device of double-flow channel turbocharger Download PDFInfo
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- CN102003272B CN102003272B CN201010529253XA CN201010529253A CN102003272B CN 102003272 B CN102003272 B CN 102003272B CN 201010529253X A CN201010529253X A CN 201010529253XA CN 201010529253 A CN201010529253 A CN 201010529253A CN 102003272 B CN102003272 B CN 102003272B
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- bleed 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
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Abstract
The invention discloses a double-channel air exhausting device of a double-flow channel turbocharger. The air exhausting device comprises a turbine volute, wherein two air inlet flow channels are formed in the turbine volute; the turbine volute is provided with an air exhausting channel which is communicated with the two air inlet flow channels respectively; and an air exhausting valve is arranged at the outlet of the air exhausting channel and is in transmission connection with an execution mechanism on the turbine volute. Mutual influence of exhaust pulses of the two air inlet flow channels of the double-flow channel turbine volute is restrained by a simple device and energy loss caused by the entrance of waste gas into the air exhausting channel when an engine runs at a low speed is reduced. The air exhausting device has a simple structure; an air exhausting port is molded in the casting process of the turbine volute; and compared with a double-air exhausting channel double-air exhausting valve device, the air exhausting device can effectively lower processing and assembly difficulty and cost and contributes to enhancing the sealing performance of the air exhausting valve and the reliability of a bypass air exhausting device of the turbocharger.
Description
Technical field
The present invention relates to a kind of exhaust gas bypass device of turbosupercharger, specifically, relate to a kind of bypass means of deflation that is used for the double flow channel turbosupercharger.
Background technique
During the vehicular engine turbocharger operation; The waste gas that motor is discharged gets into the turbine volute of turbosupercharger; Promote to discharge after the turbine wheel rotation is done work, turbine wheel drives coaxial mounted compressor impeller high speed rotating, and extraneous the suction sent into engine cylinder combustion after air also compresses; Thereby improve the density of the induced air of motor, reach the purpose that improves engine power and reduce discharging.
Along with adding of Abgasgesetz tight with people to the improving constantly of engine performance requirement, turbosupercharger is widely used in DENG, and develops into the exhaust gas bypass device by original constant cross-section device.Adopt the pressurized machine of exhaust gas bypass device that the match point of pressurized machine and motor is moved to maximum torque point by rated point; Help improving the low-speed torque characteristic and the accelerating performance of motor, solved the discharging that diesel engine quickens the problem of over-emitting black exhaust and reduced motor effectively.When the low engine speed low-load, the waste gas that motor is discharged all gets into the turbine acting; When the high engine speeds high load; For avoiding too high boost pressure and supercharger speed; Exhaust gas by-pass valve is opened, and a part of waste gas that gets into turbine volute directly is bypassed to the turbine volute outlet without turbine wheel, thereby boost pressure is controlled in the safe scope.The bypass means of deflation has become the device that generally adopts on the turbosupercharger at present.
Be to improve the low speed torque and the accelerating performance of motor, multicylinder engine is generally adopted the pressurization system of ram charging, correspondingly turbosupercharger has also adopted double flow channel air inlet turbine device.High operating mode is that the exhaust pressure of each cylinder of motor is consistent when exitting, and avoids the difference cylinder of motor to be operated under the different conditions, and the turbosupercharger of double flow channel air inlet generally adopts Twin channel bypass means of deflation.
Shown in accompanying drawing 1; The turbine volute 1 of traditional double flow channel turbosupercharger is provided with air inlet runner 2a and air inlet runner 2b; Air inlet runner 2a is communicated with bleed passage 14a; Air inlet runner 2b is communicated with bleed passage 14b, venting valve 15a is being installed on the bleed passage 14a, venting valve 15b is installed on bleed passage 14b, and venting valve 15a and venting valve 15b control the venting of bleed passage 14a and bleed passage 14b respectively; The device relative complex; Simultaneously the identical and valve 15a that avoids exitting, venting valve 15b do not leak gas when closing for the discharge quantity that guarantees air inlet runner 2a and air inlet runner 2b, and very high to the assembly precision requirement of the machining accuracy of two valve seats and valve assembly, this brings difficulty to production and processing.
And this turbosupercharger is under the low engine speed operating mode; Its venting valve is in closed condition; Adopt two air inlet runners to be in airtight connected state this moment; After the exhaust pulses of motor got into one of them air inlet runner, part waste gas poured another air inlet runner from bleed passage under the effect of flow differential pressure, caused each cylinder exhaust phase mutual interference of motor and was unfavorable for that turbo operating state keeps stable.
Summary of the invention
The problem that the present invention will solve is in order to overcome the defective that traditional double flow channel bypass means of deflation exists, provide a kind of install simple, easy to process, take up room little and can effectively control the bypass means of deflation of the double flow channel turbosupercharger of bypass discharge quantity.
In order to address the above problem, the technological scheme that the present invention adopts is:
A kind of Twin channel means of deflation of double flow channel turbosupercharger; Comprise turbine volute; Be provided with two air inlet runners in the said turbine volute; Said turbine volute is provided with the bleed passage that is communicated with respectively with two air inlet runners, in the outlet port of bleed passage the venting valve is installed, and said venting valve is in transmission connection with the actuator that is installed on the turbine volute.
Below be the further improvement of the present invention to such scheme:
Said bleed passage comprises bleed passage front portion, bleed passage fluidic junction, bleed passage middle part and the bleed passage rear portion that is communicated with successively.
Further improve:
Position on the said turbine volute between bleed passage middle part and bleed passage rear portion is provided with the boss shape valve seat, and the valve gap of said venting valve and boss shape valve seat are connected.
Further improve:
Said two air inlet runners are respectively equipped with air vent, and one of them air vent is communicated with bleed passage is anterior, and another air vent is communicated with the bleed passage fluidic junction.
Further improve:
The axial cross section of said air vent is shaped as the gradually-reducing shape structure shape, and the inlet area of said air vent is greater than discharge area.
Further improve:
The sectional area of said bleed passage front portion is greater than the discharge area of air vent, less than the sectional area in the middle part of the bleed passage.
Further improve:
The axial cross section of said bleed passage fluidic junction is shaped as flaring type structure shape.
The present invention adopts such scheme; When motor is in low-speed running; For improving low speed torque, obtain bigger running moment of torsion, the venting valve is in closed state under the control of actuator; Thereby will close, thereby sufficiently high boost pressure is provided to motor with the bleed passage of the turbosupercharger of bypass means of deflation.
The axial cross section of said air vent and air vent is shaped as the gradually-reducing shape structure shape; After the engine exhaust pulse of one of them air inlet runner gets into; Because waste gas gets into bleed passage from an air inlet runner and gets into the process of another air inlet runner again, its pressure descends earlier and afterwards rises, flow velocity increases afterwards earlier and descends, and is a kind of flow process that quickens the back diffusion earlier; Get into another air inlet runner exhaust pulses and decay to zero basically; Flowing receives very big obstruction, has suppressed waste gas effectively and has got into another air inlet runner from an air inlet runner, thereby avoided the exhaust pulses between two groups of cylinders of motor to disturb effectively.
Motor is in middle and high when running speed; The exhaust energy that motor is discharged is sufficient; For boost pressure and maximum explosive pressure and supercharger speed are limited in the scope of permission; The venting valve is in open mode under the control of actuator, two runners of the turbine volute of double flow channel device are in the open communication state.The a part of waste gas that gets into turbo machine is drained through bleed passage without turbine wheel, makes the travel line of motor under the high loaded process state approach horizontal line, thereby reduces boost pressure.Because the longitudinal cross-section of air vent and air vent is shaped as the gradually-reducing shape structure shape; The waste gas that gets into the venting runner is that step-down is quickened to flow; And owing to shorten exhaust blanking time, the internal pressure of two runners was more or less the same in engine exhaust interim, and its internal pressure all is higher than the pressure in the bleed passage; Guaranteed that waste gas can not get into the turbine volute runner from bleed passage; No matter engine operation is in which kind of working state, can both effectively avoid two runners of double flow channel turbine volute to produce the exhaust pulses interference, and waste gas gets into bleed passage and causes too much energy loss when effectively being suppressed at low engine speed.
The present invention regulates the rotating speed of turbosupercharger through the switching of regulating bleed passage, reaches the control engine output, improves the purpose of engine operation efficient, and the power character of motor, Economy are significantly improved, and satisfies various emission standards.
The influencing each other of exhaust pulses that the present invention adopts simple device to suppress two air inlet runners of double flow channel turbine volute, waste gas gets into the energy loss that bleed passage caused when having reduced low engine speed.The present invention is simple in structure; The moulding in the turbine volute casting process of its air vent; With respect to the two bleed valve door devices of two bleed passages, can effectively reduce the difficulty and the cost of processing and assembling, help improving the sealability and the reliability that improves turbosupercharger bypass means of deflation of venting valve.
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further:
Description of drawings
Accompanying drawing 1 is the two bleed passage double valve device schematic representation that are used for the double flow channel turbosupercharger in the background technique;
Accompanying drawing 2 is the device schematic representation that are used for two bleed passage single valve door device valve closes states of double flow channel turbosupercharger in the embodiment of the invention;
Accompanying drawing 3 is structural representations of air inlet runner and bleed passage in the embodiment of the invention;
Accompanying drawing 4 is space sectional views of two bleed passage single valve door device valve opening states of double flow channel turbosupercharger in the embodiment of the invention.
Among the figure: the 1-turbine volute; 2a, 2b-air inlet runner; 3a, 3b-air vent; 4,14a, 14b-bleed passage; The 5-bleed passage is anterior; 6-actuator; 7-bleed passage fluidic junction; 8-bleed passage middle part; The 9-transmission device; The 10-rocking arm; 11,15a, the 15b-valve of exitting; 12-bleed passage rear portion; 13-boss shape valve seat; The F1-inlet area; The F2-discharge area; F3, F4-sectional area.
Embodiment
Embodiment; As shown in Figure 2, a kind of Twin channel means of deflation of double flow channel turbosupercharger comprises turbine volute 1; Be provided with two air inlet runners in the said turbine volute 1: air inlet runner 2a and air inlet runner 2b; Said turbine volute 1 is provided with the bleed passage 4 that is communicated with respectively with air inlet runner 2a and air inlet runner 2b, and venting valve 11 is installed in the outlet port of bleed passage 4, and said venting valve 11 is in transmission connection with the actuator 6 that is installed on the turbine volute 1.
Said bleed passage 4 comprises bleed passage front portion 5, bleed passage fluidic junction 7, bleed passage middle part 8 and the bleed passage rear portion 12 that is communicated with successively.
Position on the said turbine volute 1 between bleed passage middle part 8 and bleed passage rear portion 12 is provided with boss shape valve seat 13, and said venting valve 11 is connected with boss shape valve seat 13.
Said air inlet runner 2a is provided with air vent 3a, and air inlet runner 2b is provided with air vent 3b, and said air vent 3a is communicated with bleed passage anterior 5, and said air vent 3b is communicated with bleed passage fluidic junction 7.
Be in transmission connection through transmission device 9 and rocking arm 10 between said venting valve 11 and the actuator 6, driven with transmission device 9 by actuator 6, around the rotation of A1 axle, thereby open or close bleed passage, its aperture is by actuator's 6 controls.
When motor is in low-speed running, for improving low speed torque, obtain bigger running moment of torsion, venting valve 11 is in closed state under the control of actuator 6, thereby bleed passage 4 is closed, thereby to motor sufficiently high boost pressure is provided.
As shown in Figure 3; For producing exhaust pulses, disturb two runners effectively avoiding the double flow channel turbine volute; Waste gas gets into bleed passage 4 and causes too much energy loss when effectively being suppressed at low engine speed; The axial cross section of said air vent 3a and air vent 3b is shaped as the gradually-reducing shape structure shape, and the inlet area F1 of said air vent 3a and air vent 3b is greater than discharge area F2.
After the engine exhaust pulse of one of them air inlet runner gets into; Because waste gas gets into bleed passage from an air inlet runner and gets into the process of another air inlet runner again; Its pressure descends earlier and afterwards rises, flow velocity increases afterwards earlier and descends; Be a kind of flow process that quickens the back diffusion earlier, get into another air inlet runner exhaust pulses and decay to zero basically that flowing receives very big obstruction; Suppressed waste gas effectively and got into another air inlet runner, thereby avoided the exhaust pulses between two groups of cylinders of motor to disturb effectively from an air inlet runner.
The sectional area F3 of said bleed passage anterior 5 is greater than the discharge area F2 of air vent 3b, and less than the sectional area F4 at bleed passage middle part 8; The axial cross section of bleed passage fluidic junction 7 is shaped as flaring type structure shape.
As shown in Figure 4; Motor is in middle and high when running speed; The exhaust energy that motor is discharged is sufficient; For boost pressure and maximum explosive pressure and supercharger speed are limited in the scope of permission, venting valve 11 is in open mode under the control of actuator 6, and two runners of the turbine volute of double flow channel device are in the open communication state.The a part of waste gas that gets into turbo machine is drained through bleed passage 4 without turbine wheel, makes the travel line of motor under the high loaded process state approach horizontal line, thereby reduces boost pressure.Because the longitudinal cross-section of air vent 3a and air vent 3b is shaped as the gradually-reducing shape structure shape; The waste gas that gets into venting runner 4 is that step-down is quickened to flow; And because exhaust shortening blanking time; The internal pressure of two runners was more or less the same in engine exhaust interim, and its internal pressure all is higher than the pressure in the bleed passage 4, had guaranteed that waste gas can not get into the turbine volute runner from bleed passage.
The present invention regulates the rotating speed of turbosupercharger through the switching of regulating bleed passage, reaches the control engine output, improves the purpose of engine operation efficient, and the power character of motor, Economy are significantly improved, and satisfies various emission standards.
In the foregoing description, the radial cross section shape of said air vent 3a, air vent 3b can be circle or rectangle, and the sectional shape at said bleed passage front portion 5, bleed passage fluidic junction 7, bleed passage middle part 8 is designed to circle or rectangle accordingly.
We have carried out detailed explanation according to the national patent method to invention now, can discern the improvement or the replacement of specific embodiment disclosed herein for those skilled in the art.These modifications are within the spirit and scope of the present invention.
Claims (4)
1. the Twin channel means of deflation of a double flow channel turbosupercharger; Comprise turbine volute (1); Be provided with two air inlet runners (2a, 2b) in the said turbine volute (1); It is characterized in that: said turbine volute (1) is provided with the bleed passage that is communicated with respectively with two air inlet runners (2a, 2b), and venting valve (11) is installed in the outlet port of bleed passage, and said venting valve (11) is in transmission connection with the actuator (6) that is installed on the turbine volute (1);
Said bleed passage comprises the bleed passage that is communicated with successively anterior (5), bleed passage fluidic junction (7), bleed passage middle part (8) and bleed passage rear portion (12);
The position that is positioned on the said turbine volute (1) between the bleed passage middle part (8) and bleed passage rear portion (12) is provided with boss shape valve seat (13), and the valve gap of said venting valve (11) and boss shape valve seat (13) are connected;
Said two air inlet runners (2a, 2b) are respectively equipped with air vent (3a, 3b), and one of them air vent (3a) is communicated with bleed passage anterior (5), and another air vent (3b) is communicated with bleed passage fluidic junction (7).
2. the Twin channel means of deflation of double flow channel turbosupercharger according to claim 1; It is characterized in that: the axial cross section of said air vent (3a, 3b) is shaped as the gradually-reducing shape structure shape, and the inlet area (F1) of said air vent (3a3b) is greater than discharge area (F2).
3. the Twin channel means of deflation of double flow channel turbosupercharger according to claim 1; It is characterized in that: the sectional area (F3) of said bleed passage anterior (5) is greater than the discharge area (F2) of air vent (3a, 3b), and less than the sectional area (F4) at bleed passage middle part (8).
4. the Twin channel means of deflation of double flow channel turbosupercharger according to claim 1 is characterized in that: the axial cross section of said bleed passage fluidic junction (7) is shaped as flaring type structure shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010529253XA CN102003272B (en) | 2010-11-03 | 2010-11-03 | Double-channel air exhausting device of double-flow channel turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010529253XA CN102003272B (en) | 2010-11-03 | 2010-11-03 | Double-channel air exhausting device of double-flow channel turbocharger |
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| CN102003272A CN102003272A (en) | 2011-04-06 |
| CN102003272B true CN102003272B (en) | 2012-06-06 |
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| CN201010529253XA Active CN102003272B (en) | 2010-11-03 | 2010-11-03 | Double-channel air exhausting device of double-flow channel turbocharger |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383877A (en) * | 2011-10-08 | 2012-03-21 | 康跃科技股份有限公司 | Volute device of variable geometry pulse gas inlet turbine |
| DE112013002147T5 (en) * | 2012-05-29 | 2015-01-29 | Borgwarner Inc. | turbocharger |
| US9359939B2 (en) * | 2013-02-20 | 2016-06-07 | Ford Global Technologies, Llc | Supercharged internal combustion engine with two-channel turbine and method |
| CN104879211B (en) * | 2015-06-16 | 2017-12-05 | 潍柴动力股份有限公司 | The control device and control method of asymmetric path turbocharger |
| DE102016208160B4 (en) * | 2016-05-12 | 2020-04-23 | Continental Automotive Gmbh | Turbine for an exhaust gas turbocharger with a double-flow turbine housing and a valve arrangement with improved outflow |
| 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 |
| CN110735673B (en) * | 2019-11-18 | 2021-10-26 | 大连海事大学 | Double-channel volute |
| CN113931706A (en) * | 2021-10-20 | 2022-01-14 | 无锡康明斯涡轮增压技术有限公司 | Turbine shell assembly for double-runner turbocharger and turbocharger |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2901041A1 (en) * | 1979-01-12 | 1980-07-17 | Daimler Benz Ag | EXHAUST TURBOCHARGER |
| EP0180917A3 (en) * | 1984-11-02 | 1987-09-16 | Hitachi, Ltd. | Exhaust gas turbine type supercharger |
| JPS61160526A (en) * | 1985-01-07 | 1986-07-21 | Hitachi Ltd | Variable capacity turbocharger |
| GB0610691D0 (en) * | 2006-05-31 | 2006-07-12 | Cummins Turbo Technologies | Turbocharger with dual wastegate |
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Effective date of registration: 20201228 Address after: No.1 luoqian street, Gucheng street, Shouguang City, Weifang City, Shandong Province Patentee after: Kangyue Technology (Shandong) Co.,Ltd. Address before: 262700 science and Technology Industrial Zone, Shouguang Development Zone, Shandong Patentee before: KANGYUE TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Dual channel bleeding device of dual channel turbocharger Effective date of registration: 20220516 Granted publication date: 20120606 Pledgee: Shandong Shouguang Rural Commercial Bank Co.,Ltd. Pledgor: Kangyue Technology (Shandong) Co.,Ltd. Registration number: Y2022980005594 |
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