CN102562185A - Two-channel variable-section volute device with flow-guiding blades - Google Patents
Two-channel variable-section volute device with flow-guiding blades Download PDFInfo
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- CN102562185A CN102562185A CN201110441452XA CN201110441452A CN102562185A CN 102562185 A CN102562185 A CN 102562185A CN 201110441452X A CN201110441452X A CN 201110441452XA CN 201110441452 A CN201110441452 A CN 201110441452A CN 102562185 A CN102562185 A CN 102562185A
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a two-channel variable-section volute device with flow-guiding blades, which comprises a volute. A volute air inlet, a volute air outlet, a volute air inlet flow channel and a volute diffusing channel are arranged in the volute, a pneumatic partition plate is arranged in the volute air inlet flow channel and divides the volute air inlet flow channel into a volute air inlet inner flow channel and a volute air inlet outer flow channel, the volute air inlet outer flow channel is located on the outer side of the circumference of the volute air inlet inner flow channel, and the position of the volute air inlet outer flow channel and the position of the volute air inlet inner flow channel which are close to the volute diffusing channel are respectively provided with a no-blade nozzle. A plurality of wing-shaped pneumatic flow-guiding blades are annularly evenly arranged at the position inside the volute air inlet outer flow channel close to the no-blade nozzle. For a pulse pressurizing system, the inner flow channel works at an engine low-speed area, and the pulse energy can be utilized better. When at a high speed, the outer flow channel does not need to be divided into two flow channels, enough energy can be obtained through one flow channel, a product structure is further simplified, and the product weight is reduced.
Description
Technical field
The present invention relates to a kind of Twin channel variable cross section spiral case device, specifically, belong to the supercharging of internal combustion engine field through relating to a kind of Twin channel variable cross section spiral case device that improves the band guide vane of efficiency of turbocharger.
Background technique
In recent years; Increasingly stringent along with emission regulation demands; People are more and more stronger to the demand of the pressurized machine of taking into account the high low-speed performance of motor, and the double flow channel variable-area turbocharger that satisfies performance requirement in the full operating mode scope of motor becomes the emphasis of internal-combustion engine industry research.
As shown in Figure 1; Patent CN200910016706.6 discloses a kind of two-layer flow path variable area turbine of turbine supercharger embodiment 1 structure; Comprise spiral case 1, spiral case diffusion passage 2, power turbine 3; Be provided with spiral case air inlet runner partition wall 4 in the cavity of spiral case 1; The spiral case air inlet inner flow passage 6 that spiral case air inlet runner partition wall 4 is separated into the cavity of spiral case 1 spiral case air inlet outer flow passage 5 and is communicated with spiral case diffusion passage 2, spiral case air inlet outer flow passage 5 is sleeved on the outside of spiral case air inlet inner flow passage 6, and spiral case air inlet inner flow passage 6 is a single channel; Be provided with runner floor 7 in the spiral case air inlet outer flow passage 5, spiral case air inlet runner partition wall 4 is connected with the housing one of spiral case 1 through runner floor 7.Spiral case air inlet inner flow passage 6 is used in the full operating mode scope of motor, and spiral case air inlet outer flow passage 5 passes through the unlatching and the flow area of the axial motion control spiral case air inlet outer flow passage 5 of regulation structure in the high engine speed range in motor, realizes the function of variable-area turbine.
As shown in Figure 2; Patent CN200910016706.6 discloses a kind of two-layer flow path variable area turbine of turbine supercharger embodiment 2 structures; Comprise spiral case 1, spiral case diffusion passage 2, power turbine 3; Be provided with spiral case air inlet runner partition wall 4 in the cavity of spiral case 1, the spiral case air inlet inner flow passage 6 that spiral case air inlet runner partition wall 4 is separated into the cavity of spiral case 1 spiral case air inlet outer flow passage 5 and is communicated with spiral case diffusion passage 2, spiral case air inlet outer flow passage 5 is sleeved on the outside of spiral case air inlet inner flow passage 6; Be provided with runner floor 7 in the spiral case air inlet outer flow passage 5, spiral case air inlet runner partition wall 4 is connected with the housing one of spiral case 1 through runner floor 7.Be provided with pulse inner flow passage floor 8 in the spiral case air inlet inner flow passage, pulse inner flow passage floor 8 is partitioned into left side pulse inner flow passage 9 and right side pulse inner flow passage 10 with spiral case air inlet inner flow passage.The pulse runner makes full use of the vent systems energy under the low speed operating mode in the motor; Spiral case air inlet outer flow passage 5 is positioned at the outside of left side pulse inner flow passage 9 and right side pulse inner flow passage 10; Spiral case air inlet outer flow passage 5 passes through the unlatching and the flow area of the axial motion control spiral case air inlet outer flow passage 5 of regulation structure in the high engine speed range in motor, realize the function of variable-area turbine.
Above-mentioned patent is to the needs of turbosupercharger variable-area turbine; Accomplished the exploitation of double-deck spiral case air inlet runner and pulse pressure-charging variable-area turbine; Effectively utilize the exhaust energy of motor, taken into account the boost demand under low engine speed and the high-speed working condition.But the structure that is designed: the runner floor only plays the effect that fixed support connects, and in addition, can cause certain wall friction loss at runner floor wall, does not have the characteristics of improving stream condition.
Summary of the invention
The problem that the present invention will solve provides a kind of wall friction loss that the runner floor causes that reduces, and through the guide functions of guide vane to inlet stream, further improves the Twin channel variable cross section spiral case device of the band guide vane of efficiency of turbocharger.
In order to address the above problem, the present invention has adopted following technological scheme:
A kind of Twin channel variable cross section spiral case device with guide vane comprises spiral case, is provided with spiral case suction port, spiral case air outlet and spiral case air inlet runner and spiral case diffusion passage in the said spiral case;
Be provided with pneumatic barrier in the said spiral case air inlet runner, said pneumatic barrier is divided into spiral case air inlet inner flow passage and spiral case air inlet outer flow passage with the spiral case air inlet runner;
The week that said spiral case air inlet outer flow passage is positioned at said spiral case air inlet inner flow passage laterally;
Said spiral case air inlet outer flow passage and spiral case air inlet inner flow passage are respectively equipped with non-blade nozzle near the position of spiral case diffusion passage;
Evenly be provided with some wing blade pneumatic type guide vanes ringwise near the non-blade nozzle place in the spiral case air inlet outer flow passage.
Below be the further improvement of the present invention to such scheme:
One end of said guide vane is connected with spiral case air inlet outer flow passage inwall integrally casting, and the other end is connected with the inwall integrally casting that pneumatic barrier is positioned at spiral case air inlet outer flow passage one side.
Through casting technique guide vane is fixed on the spiral case air inlet outer flow passage, on the one hand, has reduced the bump of high-speed exhaust gas stream, prevent that turbine wheel from producing vibration turbine wheel.On the other hand, through the guide vane of designs fix on the spiral case housing together, play the effect of fixed connection with pneumatic barrier and spiral case shell cast.
Further improve: the suction port of said spiral case air inlet inner flow passage is connected with the spiral case suction port, and said spiral case air inlet outer flow passage suction port is connected with the suction port of spiral case air inlet inner flow passage.
Further improve: be provided with spiral case air inlet outer flow passage control room between said spiral case air inlet outer flow passage and the spiral case air inlet outer flow passage suction port, spiral case air inlet outer flow passage suction port place is provided with the spiral case air inlet outer flow passage end cap that matches.
Further improve: said spiral case air inlet outer flow passage is provided with the air inlet adjustment valve in the control room; Be provided with the fitting surface that the air inlet adjustment valve is complementary with the corresponding position of air inlet adjustment valve on the pneumatic barrier; Said air inlet adjustment valve is in the open and close state under the drive of air inlet adjustment control gear, thereby realizes the work and the off position of spiral case air inlet outer flow passage.
The spatial limitation in said spiral case air inlet outer flow passage control room the angle of air inlet adjustment valve opening, thereby limited the exhaust gas flow that gets into spiral case air inlet outer flow passage.
The purpose of design of said fitting surface is for when the air inlet adjustment valve is in closed condition; Air inlet adjustment valve and spiral case air inlet outer flow passage closely cooperate; Prevent that under the low operating mode of motor, the air-flow that only gets into spiral case air inlet inner flow passage flows into spiral case air inlet outer flow passage, causes intake efficiency to reduce.
Further improve: for being applicable to constant pressure charging system, four cylinder engine for example, said spiral case suction port is single suction port.
The another kind of improvement: for being applicable to impulse pressure charging system, six cylinder engine for example, said spiral case suction port can also be two suction ports: comprise spiral case left side suction port and spiral case right side suction port.
Further improve: said spiral case air inlet inner flow passage is provided with pulse inner flow passage floor, and said pulse inner flow passage floor is divided into left side pulse inner flow passage and right side pulse inner flow passage with spiral case air inlet inner flow passage;
Said left side pulse inner flow passage is connected with spiral case right side suction port with spiral case left side suction port respectively with right side pulse inner flow passage.
Further improve: the cross section of said pulse inner flow passage floor is gradual shrinkage, and said pulse inner flow passage floor is connected with the pneumatic barrier integrally casting.
Further improve: the suction port of the suction port of said left side pulse inner flow passage and right side pulse inner flow passage is connected with spiral case left side suction port and spiral case right side suction port respectively;
Said spiral case air inlet outer flow passage left side suction port and spiral case air inlet outer flow passage right side suction port are connected with the suction port of left side pulse inner flow passage and the suction port of right side pulse inner flow passage respectively.
The present invention adopts such scheme, and when motor was in the low speed operating mode, the air inlet adjustment valve was in closed condition under the drive of air inlet adjustment valve control device, and spiral case air inlet outer flow passage is closed, and is in off position.At this moment, the exhaust flow of discharging from the motor spiral case air inlet inner flow passage of only flowing through, thus drive the turbine acting.
Motor is under middle and high fast operating mode, and the air inlet adjustment valve is in open mode under the drive of air inlet adjustment valve control device, and spiral case air inlet outer flow passage is opened, and is in running order.At this moment; The waste gas of discharging from motor is under the drive of pneumatic barrier; Flow through respectively spiral case air inlet inner flow passage and spiral case air inlet outer flow passage; The air-flow of spiral case inner flow passage of flowing through drives the turbine acting, and the air-flow of the spiral case air inlet outer flow passage of flowing through this moment effectively does work with suitable flow angle drive turbine under the inducing of equally distributed fixed guide vane.Set guide vane can induce exhaust flow uniformly, get into turbine with suitable flow angle, has reduced the bump loss of high speed inlet stream to turbine wheel, has improved intake efficiency, thereby has effectively improved turbine efficiency.
Non-blade nozzle position through at Twin channel spiral case air inlet outer flow passage is provided with fixing equally distributed guide vane, and for impulse pressure charging system, inner flow passage is operated in the low engine speed district; Can utilize pulse energy better; During high speed, outer flow passage can be divided into two runners, can obtain enough energy with a runner; The further like this product structure of having simplified has alleviated product weight.
In sum; Worm frame among the present invention is basic identical with conventional Twin channel turbosupercharger worm frame; Guaranteed to be connected with the engine exhaust pipeline constant, simple in structure, inheritance is good, cost is low, easy Rapid Realization through engineering approaches, the air inlet regulating device in the invention is simple in structure; Control mode realizes that easily reliability is high.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Description of drawings
Accompanying drawing 3 is structural representations of the Twin channel variable cross section spiral case of band guide vane in the embodiment of the invention 1;
Accompanying drawing 4 is Twin channel variable cross section spiral case axial sections of band guide vane in the embodiment of the invention 1;
Accompanying drawing 6 is structural representations of the Twin channel variable cross section spiral case of the embodiment of the invention 2 band guide vanes;
Accompanying drawing 7 is Twin channel variable cross section spiral case axial sections of band guide vane in the embodiment of the invention 2.
Among the figure: the 1-spiral case; 2-spiral case diffusion passage; The 3-power turbine; 4-spiral case air inlet runner partition wall; 5-spiral case air inlet outer flow passage; 6-spiral case air inlet inner flow passage; 7-runner floor; 8-pulse inner flow passage floor; 9-left side pulse inner flow passage; 10-right side pulse inner flow passage; 11-spiral case suction port; 12-spiral case air outlet; The 13--pneumatic barrier; The 14-guide vane; The 15-non-blade nozzle; 16-spiral case air inlet outer flow passage inwall; 17-spiral case air inlet outer flow passage suction port; 18-spiral case air inlet outer flow passage control room; 19-spiral case air inlet outer flow passage end cap; 20-air inlet adjustment valve; The 21-fitting surface; 22-spiral case air inlet outer flow passage left side suction port; 23-spiral case air inlet outer flow passage right side suction port; 24-spiral case left side suction port; 25-spiral case right side suction port.
Embodiment
Be provided with pneumatic barrier 13 in the said spiral case air inlet runner, said pneumatic barrier 13 is divided into spiral case air inlet inner flow passage 6 and spiral case air inlet outer flow passage 5 with the spiral case air inlet runner;
The week that said spiral case air inlet outer flow passage 5 is positioned at said spiral case air inlet inner flow passage 6 laterally;
Said spiral case air inlet outer flow passage 5 and spiral case air inlet inner flow passage 6 are respectively equipped with non-blade nozzle 15 near the position of spiral case diffusion passage 2;
Evenly be provided with some wing blade pneumatic type guide vanes 14 ringwise near non-blade nozzle 15 places in the spiral case air inlet outer flow passage 5.
Said spiral case air inlet inner flow passage 6 is single runner, and said spiral case air inlet inner flow passage 6 is worked in the full operating mode scope of motor.
The design aerodynamic principle of said pneumatic barrier 13 can well induce exhaust flow to get into the spiral case air inlet runner.
The design of said guide vane 14; Be under the middle and high operating mode of motor; Can fully induce the exhaust flow velocity quickening of the spiral case air inlet outer flow passage 5 of flowing through and go into turbine wheel, reduce the bump loss of exhaust flow, thereby improve the turbine intake efficiency turbine wheel with the appropriate gas flow angular flux.
One end of said guide vane 14 is connected with spiral case air inlet outer flow passage inwall 16 integrally castings, and the other end is connected with the inwall integrally casting that pneumatic barrier 13 is positioned at spiral case air inlet outer flow passage 5 one sides.
Through casting technique guide vane 14 is fixed on the spiral case air inlet outer flow passage 5, on the one hand, has reduced the bump of high-speed exhaust gas stream, prevent that turbine wheel from producing vibration turbine wheel.On the other hand, through the guide vane 14 of designs fix on spiral case 1 housing together, play the effect of fixed connection with pneumatic barrier 13 and spiral case 1 shell cast.
As shown in Figure 5, the suction port of said spiral case air inlet inner flow passage 6 is connected with said spiral case suction port 11, and said spiral case air inlet outer flow passage suction port 17 is connected with the suction port of spiral case air inlet inner flow passage 6.
Be provided with spiral case air inlet outer flow passage control room 18 between said spiral case air inlet outer flow passage 5 and the spiral case air inlet outer flow passage suction port 17; Spiral case air inlet outer flow passage suction port 17 places are provided with the spiral case air inlet outer flow passage end cap 19 that matches, to realize the seal action to the inlet stream of spiral case air inlet outer flow passage 5.
For guaranteeing under the middle and high operating mode of motor; Spiral case air inlet outer flow passage 5 is effectively worked; Be provided with air inlet adjustment valve 20 in the said spiral case air inlet outer flow passage control room 18; Be provided with the fitting surface 21 that air inlet adjustment valve 20 is complementary with air inlet adjustment valve 20 corresponding positions on the pneumatic barrier 13, said air inlet adjustment valve 20 is in the open and close state under the drive of air inlet adjustment control gear, thereby realizes the work and the off position of spiral case air inlet outer flow passage 5.
The spatial limitation in said spiral case air inlet outer flow passage control room 18 air inlet adjustment valve 20 angle of opening, thereby limited the exhaust gas flow that gets into spiral case air inlet outer flow passage 5.
The purpose of design of said fitting surface 21 is for when air inlet adjustment valve 20 is in closed condition; Air inlet adjustment valve 20 closely cooperates with spiral case air inlet outer flow passage 5; Prevent under the low operating mode of motor; The air-flow that only gets into spiral case air inlet inner flow passage 6 flows into spiral case air inlet outer flow passage 5, causes intake efficiency to reduce.
For being applicable to constant pressure charging system, four cylinder engine for example, said spiral case suction port 11 is designed to single suction port.
Under the middle and high operating mode of motor; Under the drive of air inlet adjustment control gear, air inlet adjustment valve 20 (dotted line position) is in open mode, at this moment; Spiral case air inlet outer flow passage 5 is in running order; The exhaust flow of discharging through motor flows into spiral case air inlet inner flow passage 6 and spiral case air inlet outer flow passage 5 through the spiral case suction port, and exhaust flow gets into turbine through spiral case air inlet inner flow passage 6 and spiral case air inlet outer flow passage 5, thereby drives the turbine acting.Owing to be provided with fixing, equally distributed wing blade pneumatic type guide vane 14 near non-blade nozzle 15 positions at spiral case air inlet outer flow passage 5; Can induce the air-flow of the spiral case air inlet outer flow passage 5 of flowing through evenly to get into turbine; Prevent that non-blade nozzle 15 places from producing airflow obstruction; Reduced of the bump loss of the exhaust flow at non-blade nozzle 15 places, improved the turbine intake efficiency turbine.
Under the low operating mode of motor; Under the drive of air inlet adjustment control gear, air inlet adjustment valve 20 (solid line position) is in closed condition, and spiral case air inlet this moment outer flow passage 5 is in off position; The exhaust flow of discharging through the motor spiral case air inlet inner flow passage 6 of only flowing through; Because the acting sectional area of spiral case air inlet runner reduces, therefore improved the intake velocity of spiral case exhaust flow, thereby improved the turbine efficiency of low speed operating mode.
As shown in Figure 7, said spiral case air inlet inner flow passage 6 is provided with pulse inner flow passage floor 8, and said pulse inner flow passage floor 8 is divided into left side pulse inner flow passage 9 and right side pulse inner flow passage 10 with spiral case air inlet inner flow passage 6.
Said left side pulse inner flow passage 9 is connected with spiral case right side suction port 25 with spiral case left side suction port 24 respectively with right side pulse inner flow passage 10.
The cross section of said pulse inner flow passage floor 8 is gradual shrinkage, and said pulse inner flow passage floor 8 is connected with pneumatic barrier 13 castings.
The suction port of the suction port of said left side pulse inner flow passage 9 and right side pulse inner flow passage 10 is connected with spiral case right side suction port 25 with spiral case left side suction port 24 respectively, and said spiral case air inlet outer flow passage left side suction port 22 is connected with the suction port of left side pulse inner flow passage 9 and the suction port of right side pulse inner flow passage 10 respectively with spiral case air inlet outer flow passage right side suction port 23.
Under the middle and high operating mode of motor, for impulse pressure charging system, outer flow passage can be without separated into two parts; Can obtain enough energy with a runner; Under the drive of air inlet adjustment control gear, the air inlet adjustment valve is in open mode, at this moment; Spiral case air inlet outer flow passage is in running order; The pulsing airflow of discharging through the motor spiral case suction port of flowing through flows into spiral case air inlet inner flow passage and spiral case air inlet outer flow passage, and the stream of pulses spiral case air inlet inner flow passage of flowing through gets into turbine with spiral case air inlet outer flow passage, thereby the drive turbine does work.Owing to be provided with fixing, equally distributed plate-counter aerofoil profile pneumatic type guide vane near the non-blade nozzle position at spiral case air inlet outer flow passage; Can well induce the air-flow of the spiral case air inlet outer flow passage of flowing through to get into turbine wheel uniformly with suitable flow angle; Prevent that the nozzle place from producing airflow obstruction; Reduced of the bump loss of the stream of pulses stream at spiral case nozzle place, thereby improved turbine efficiency turbine.
Under the low operating mode of motor, under the drive of air inlet adjustment control gear, the air inlet adjustment valve is in closed condition; Spiral case air inlet this moment outer flow passage is in off position, and spiral case air inlet inner flow passage is divided into two runners, can obtain good pulse energy; Pulse inner flow passage and right side pulse inner flow passage on the left of the pulsing airflow that motor is discharged is only flowed through; Because spiral case air inlet runner sectional area reduces, therefore improved the intake velocity of spiral case exhaust flow, thereby improved the turbine efficiency of low speed operating mode.
Claims (10)
1. Twin channel variable cross section spiral case device with guide vane comprises:
Spiral case (1) is provided with spiral case suction port (11), spiral case air outlet (12) and spiral case air inlet runner and spiral case diffusion passage (2) in the said spiral case (1);
Be provided with pneumatic barrier (13) in the said spiral case air inlet runner, said pneumatic barrier (13) is divided into spiral case air inlet inner flow passage (6) and spiral case air inlet outer flow passage (5) with the spiral case air inlet runner;
The week that said spiral case air inlet outer flow passage (5) is positioned at said spiral case air inlet inner flow passage (6) laterally;
Said spiral case air inlet outer flow passage (5) and spiral case air inlet inner flow passage (6) are respectively equipped with non-blade nozzle (15) near the position of spiral case diffusion passage (2);
It is characterized in that: locate evenly to be provided with ringwise some wing blade pneumatic type guide vanes (14) near non-blade nozzle (15) in the spiral case air inlet outer flow passage (5).
2. the Twin channel variable cross section spiral case device of band guide vane according to claim 1; It is characterized in that: an end of said guide vane (14) is connected with spiral case air inlet outer flow passage inwall (16) integrally casting, and the other end is connected with the inwall integrally casting that pneumatic barrier (13) is positioned at spiral case air inlet outer flow passage (5) one sides.
3. the Twin channel variable cross section spiral case device of band guide vane according to claim 1 and 2; It is characterized in that: the suction port of said spiral case air inlet inner flow passage (6) is connected with spiral case suction port (11), and said spiral case air inlet outer flow passage suction port (17) is connected with the suction port of spiral case air inlet inner flow passage (6).
4. the Twin channel variable cross section spiral case device of band guide vane according to claim 3 is characterized in that:
Be provided with spiral case air inlet outer flow passage control room (18) between said spiral case air inlet outer flow passage (5) and the spiral case air inlet outer flow passage suction port (17), spiral case air inlet outer flow passage suction port (17) locates to be provided with the spiral case air inlet outer flow passage end cap (19) that matches.
5. the Twin channel variable cross section spiral case device of band guide vane according to claim 4; It is characterized in that: be provided with air inlet adjustment valve (20) in the said spiral case air inlet outer flow passage control room (18); Pneumatic barrier (13) is gone up and the corresponding position of air inlet adjustment valve (20) is provided with the fitting surface (21) that air inlet adjustment valve (20) is complementary, and said air inlet adjustment valve (20) is in the open and close state under the drive of air inlet adjustment control gear.
6. the Twin channel variable cross section spiral case device of band guide vane according to claim 5 is characterized in that: said spiral case suction port (11) is single suction port.
7. the Twin channel variable cross section spiral case device of band guide vane according to claim 5 is characterized in that: said spiral case suction port (11) is two suction ports: comprise spiral case left side suction port (24) and spiral case right side suction port (25).
8. the Twin channel variable cross section spiral case device of band guide vane according to claim 7 is characterized in that:
Said spiral case air inlet inner flow passage (6) is provided with pulse inner flow passage floor (8), and said pulse inner flow passage floor (8) is divided into left side pulse inner flow passage (9) and right side pulse inner flow passage (10) with spiral case air inlet inner flow passage (6);
Said left side pulse inner flow passage (9) is connected with spiral case right side suction port (25) with spiral case left side suction port (24) respectively with right side pulse inner flow passage (10).
9. the Twin channel variable cross section spiral case device of band guide vane according to claim 8, it is characterized in that: the cross section of said pulse inner flow passage floor (8) is gradual shrinkage, and said pulse inner flow passage floor (8) is connected with pneumatic barrier (13) integrally casting.
10. the Twin channel variable cross section spiral case device of band guide vane according to claim 9 is characterized in that:
The suction port of the suction port of said left side pulse inner flow passage (9) and right side pulse inner flow passage (10) is connected with spiral case left side suction port (24) and spiral case right side suction port (25) respectively;
Said spiral case air inlet outer flow passage left side suction port (22) and spiral case air inlet outer flow passage right side suction port (23) are connected with the suction port of left side pulse inner flow passage (9) and the suction port of right side pulse inner flow passage (10) respectively.
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| CN104302889A (en) * | 2012-05-29 | 2015-01-21 | 博格华纳公司 | Exhaust-gas turbocharger |
| CN104389643A (en) * | 2014-11-20 | 2015-03-04 | 康跃科技股份有限公司 | Exhaust gas bypass turbine with guide vanes |
| WO2016078444A1 (en) * | 2014-11-20 | 2016-05-26 | 康跃科技股份有限公司 | Variable geometry wastegate turbine meeting the requirements of egr circulation and guide vane assembly |
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| CN202391494U (en) * | 2011-12-26 | 2012-08-22 | 康跃科技股份有限公司 | Double-channel variable-section volute device with guide vane |
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| CN104302889A (en) * | 2012-05-29 | 2015-01-21 | 博格华纳公司 | Exhaust-gas turbocharger |
| CN104302889B (en) * | 2012-05-29 | 2016-12-21 | 博格华纳公司 | Exhaust turbine supercharger |
| CN104389643A (en) * | 2014-11-20 | 2015-03-04 | 康跃科技股份有限公司 | Exhaust gas bypass turbine with guide vanes |
| CN104389643B (en) * | 2014-11-20 | 2016-03-02 | 康跃科技股份有限公司 | With the exhaust gas bypass turbo machine of stator |
| WO2016078444A1 (en) * | 2014-11-20 | 2016-05-26 | 康跃科技股份有限公司 | Variable geometry wastegate turbine meeting the requirements of egr circulation and guide vane assembly |
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