CN105257348B - The symmetrical by-pass collar of pressure of Double flow path turbo-charger - Google Patents
The symmetrical by-pass collar of pressure of Double flow path turbo-charger Download PDFInfo
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- CN105257348B CN105257348B CN201510719726.5A CN201510719726A CN105257348B CN 105257348 B CN105257348 B CN 105257348B CN 201510719726 A CN201510719726 A CN 201510719726A CN 105257348 B CN105257348 B CN 105257348B
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- turbine case
- waste gate
- gate passage
- air inlet
- turbine
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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 present invention relates to a kind of Double flow path turbo-charger, specifically a kind of symmetrical by-pass collar of the pressure of Double flow path turbo-charger belongs to engine turbine supercharging technology field.It includes turbine case, turbine case internal upper part is provided with the first turbine case waste gate passage and the second turbine case waste gate passage, bottom is provided with the first turbine case air inlet runner and the second turbine case air inlet runner in turbine case, first turbine case air inlet runner and the first turbine case waste gate passage are connected, and the second turbine case air inlet runner and the second turbine case waste gate passage are connected.First turbine case air inlet runner and the second turbine case air inlet runner are symmetrical arranged.Two waste gate passages of the invention are symmetrical arranged, and space is small, disturb small to primary air；During bypass, the present invention can balance the pressure differential between two air inlet runners, so that engine integral combustion efficiency is improved, while impact wear of the bypass flow to by-passing valve valve block can also be reduced.
Description
Technical field
The present invention relates to a kind of Double flow path turbo-charger, specifically a kind of pressure pair of Double flow path turbo-charger
Claim by-pass collar, belong to engine turbine supercharging technology field.
Background technology
Turbocharger is actually a kind of air compressor, and air inflow is increased by compressed air.It is using hair
The waste gas inertia impulsive force of motivation discharge promotes the turbine in turbine case, and turbine drives coaxial pressure impeller, pressure impeller force feed again
The air sent by air filter pipeline, is allowed to supercharging and enters cylinder.When engine speed increase, the waste gas velocity of discharge and whirlpool
Wheel speed also synchronously increases, and pressure impeller just compresses more air and enters cylinder, and pressure and the density increase of air can burn
More fuel, the corresponding rotating speed for increasing fuel quantity and adjustment engine, it is possible to increase the power output of engine.When starting
When machine is in big load condition at a high speed, in order to avoid boost pressure and supercharger speed are too high, it will usually by exhaust gas by-pass valve
A part of waste gas is bled off, this portion will not be done work by turbine, but be directly bypassed to turbine case outlet, so as to will increase
Pressure pressure and supercharger speed control are in safe range.
In the prior art, there are two kinds of exhaust gas bypass structures, single valve single hole bypass and single valve diplopore bypass.For single valve list
Hole is bypassed, and exhaust gas by-pass valve is typically placed on the runner near outlet, after by-passing valve unlatching, before two whirlpools of runner
Pressure is inconsistent, and so as to cause two groups of cylinder pressures being respectively connected with two runners inconsistent, that is, charging efficiency differs
Cause, air capacity maldistribution, and the oil of each cylinder spray is the same, so as to cause uneven, each cylinder-firing pressure that burns
Also it is inconsistent, cause the efficiency of combustion reduction that engine is overall.For single valve diplopore bypass, the patent of the structure is disclosed recently is
US 2009/0028694, in the structure of patent description, bypass flow outlet is placed in turbine case side, i.e. bypass flow
Identical with primary air direction, the structure has the disadvantage that:First, two bypass passageways are asymmetric（Length and section are different）, because
After the unlatching of by-passing valve valve block, the pressure differential between two air inlet runners is still present for this, influences the integral combustion efficiency of engine,
Meanwhile, to the impact wear of by-passing valve valve block also than larger；Second, the complex structure of air inlet runner and bypass passageways, high cost,
Reliability is poor；3rd, in the case where valve block is closed, bypass passageways space is to the interference of primary air than larger.
The content of the invention
It is an object of the present invention to overcome the above deficiencies, so as to provide a kind of pressure pair of Double flow path turbo-charger
Claim by-pass collar, when by-passing valve valve block is opened, thoroughly the pressure differential between two air inlet runners of balance, improves the whole of engine
Body efficiency of combustion, and then fuel economy is improved, while reducing the impact wear to by-passing valve valve block.
According to the technical scheme that the present invention is provided, the symmetrical by-pass collar of pressure of Double flow path turbo-charger includes turbine
Shell, it is characterized in that：Turbine case internal upper part is provided with the first turbine case waste gate passage and the second turbine case waste gate passage, whirlpool
Bottom is provided with the first turbine case air inlet runner and the second turbine case air inlet runner, the first turbine case air inlet runner and first in hub
Turbine case waste gate passage is connected, and the second turbine case air inlet runner and the second turbine case waste gate passage are connected；First whirlpool
Hub waste gate passage and the second turbine case waste gate passage are symmetrical arranged；Turbine case internal upper part is provided with by-passing valve valve block,
Connection can drive the rocker arm shaft that by-passing valve valve block is rotated on by-passing valve valve block, other when by-passing valve valve block turns to closed mode
Port valve valve block can simultaneously seal the first turbine case waste gate passage and the second turbine case waste gate passage, and rocking arm drives other
When port valve valve block turns to opening, the first turbine case waste gate passage and the second turbine case waste gate passage are opened；
Connecting rocker arm on the outside of the rocker arm shaft, rocking arm outside connection pneumatic actuator, pneumatic actuator can drive rocker arm shaft to turn
It is dynamic, so as to control by-passing valve valve block to be turned on and off.
Further, rocker arm shaft is provided with bushing, and bushing is located between by-passing valve valve block and turbine case madial wall.
Compared with the prior art the present invention has advantages below：
Simple structure of the present invention, compact, reasonable, two bypass passageways of the invention are symmetrical arranged, and space is small, to main gas
Draining off, it is small to disturb；During bypass, the present invention can balance the pressure differential between two air inlet runners, so as to improve engine integral combustion
Efficiency, while impact wear of the bypass flow to by-passing valve valve block can also be reduced；Secondly, bypass passageways structure letter of the invention
It is single, manufacturing cost compared with；Again, because bypass passageways ddividing wall is short and simple, the gas leakage risk under heat fatigue and Warm status is low.
Brief description of the drawings
Fig. 1 is the stereogram of by-passing valve valve block opening of the invention.
Fig. 2 is the sectional view of by-passing valve valve block closed mode of the invention.
Fig. 3 is bypass passageways front view of the invention.
Description of reference numerals：1- turbine cases, the first turbine cases of 2a- waste gate passage, the turbine exhausts of 2b- second bypass are logical
Road, the first turbine cases of 3a- air inlet runner, the second turbine cases of 3b- air inlet runner, 4- by-passing valves valve block, 5- pneumatic actuators, 6-
Rocking arm, 7- rocker arm shafts, 8- bushings.
Specific embodiment
The present invention will be further described with reference to the embodiment in accompanying drawing below：
As shown in Fig. 1 ~ 3, the invention mainly comprises turbine case 1, the internal upper part of turbine case 1 is provided with the first turbine case exhaust gas bypass
Passage 2a and the second turbine case waste gate passage 2b, bottom is provided with the first turbine case air inlet runner 3a and second in turbine case 1
Turbine case air inlet runner 3b, the first turbine case air inlet runner 3a and the first turbine case waste gate passage 2a are connected, the second turbine
Shell air inlet runner 3b and the second waste gate passage 2b is connected.
First turbine case air inlet runner 3a and the second turbine case air inlet runner 3b are symmetrical arranged.First turbine case exhaust gas bypass
The area and shape of passage 2a and the second turbine case waste gate passage 2b targetedly enter according to the pressure differential of two runners
Row design.In order to realize that pressure is symmetrically bypassed, the first turbine case waste gate passage 2a and the second turbine case waste gate passage
The cross-sectional area of 2b can be set to unequal, typically S according to concrete application2b>S2a。
The internal upper part of turbine case 1 is provided with by-passing valve valve block 4, and connection can drive by-passing valve valve block 4 to rotate on by-passing valve valve block 4
Rocker arm shaft 7, when by-passing valve valve block 4 turns to closed mode, by-passing valve valve block 4 can be sealed by the first turbine case waste gas simultaneously
Circulation passage 2a and the second turbine case waste gate passage 2b；When rocking arm 6 drives by-passing valve valve block 4 to turn to opening, first
Turbine case waste gate passage 2a and the second turbine case waste gate passage 2b is opened.
The outside connecting rocker arm 6 of the rocker arm shaft 7, the outside of rocking arm 6 connection pneumatic actuator 5, pneumatic actuator 5 can
Rocker arm shaft 7 is driven to rotate, so as to control by-passing valve valve block 4 to be turned on and off.
The rocker arm shaft 7 is provided with bushing 8, and bushing 8 is located between by-passing valve valve block 4 and the madial wall of turbine case 1, bushing 8
By-passing valve valve block 4 is avoided to be worn and torn with caused by the inner side wall friction of turbine case 1 when rotating.
Operation principle of the invention is：When engine is in low regime, in order to obtain enough boost pressures, hair is improved
Motivation moment of torsion, by-passing valve valve block is closed in the presence of pneumatic actuator, and two bypass passageways are closed, and is made complete
Portion's waste gas is done work by turbine.When engine is in high speed high load working condition, the exhaust gas velocity of engine discharge increases, in order to
Within the limits prescribed, by-passing valve valve block is at pneumatic actuator and turbine case import for control boost pressure and supercharger speed
In the presence of exhaust gas pressure, the axis around rocker arm shaft is flipped open, and a part of waste gas in two air inlet runners passes through two respectively
Individual bypass passageways are discharged to turbine case outlet, are done work without turbine, so as to control boost pressure and supercharger speed.
Compared with bypass passageways described in patent US 2009/0028694, two bypass passageways of the invention are symmetrical arranged,
And space is small, small is disturbed to primary air；In addition, during bypass, the pressure differential between two air inlet runners can be balanced, so as to improve
Engine integral combustion efficiency, while impact wear of the bypass flow to by-passing valve valve block can also be reduced；Secondly, it is of the invention
Bypass passageways simple structure, manufacturing cost compared with；Again, because bypass passageways ddividing wall is short and simple, heat fatigue and Warm status
Under gas leakage risk it is low.
In above-described embodiment, in order to thoroughly balance the pressure differential between two air inlet runners, realize that pressure is symmetrically bypassed, it is other
The discharge area of circulation passage is designed to unequal, is S precisely2b>S2a, S2bIt is to be given up away from the second of turbine case outlet
The discharge area of gas bypass passageways, S2aIt is the discharge area of the first waste gate passage for being close to turbine case outlet.
Claims (1)
1. a kind of symmetrical by-pass collar of the pressure of Double flow path turbo-charger, including turbine case（1）, turbine case（1）Interior bottom sets
There is the first turbine case air inlet runner（3a）With the second turbine case air inlet runner（3b）, turbine case（1）Internal upper part is provided with by-passing valve valve
Piece（4）, by-passing valve valve block（4）Upper connection can drive by-passing valve valve block（4）The rocker arm shaft of rotation（7）, the rocker arm shaft（7）Outward
Side connecting rocker arm（6）, rocking arm（6）Outside connects pneumatic actuator（5）, pneumatic actuator（5）Rocker arm shaft can be driven（7）
Rotate, so as to control by-passing valve valve block（4）It is turned on and off；First turbine case air inlet runner（3a）By the first turbine case waste gas
Circulation passage（2a）Connection, by-passing valve valve block（4）When turning to closed mode, rocking arm（6）Drive by-passing valve valve block（4）Turn to out
When opening state, the first turbine case waste gate passage（2a）With the second turbine case waste gate passage（2b）Open；The rocking arm
Axle（7）It is provided with bushing（8）, bushing（8）Positioned at by-passing valve valve block（4）And turbine case（1）Between madial wall；
It is characterized in that：Turbine case（1）Internal upper part is provided with the first turbine case waste gate passage（2a）By the second turbine case waste gas
Circulation passage（2b）, the first turbine case waste gate passage（2a）With the second turbine case waste gate passage（2b）It is symmetrical arranged；The
Two turbine case air inlet runners（3b）With the second turbine case waste gate passage（2b）Connection；By-passing valve valve block（4）Can be simultaneously close
Seal the first turbine case waste gate passage（2a）With the second turbine case waste gate passage（2b）；
First turbine case waste gate passage（2a）With the second turbine case waste gate passage（2b）Discharge area it is unequal,
It is S2b>S2a, S2bIt is the second turbine case waste gate passage away from turbine case outlet（2b）Discharge area, S2aIt is close
First turbine case waste gate passage of turbine case outlet（2a）Discharge area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719726.5A CN105257348B (en) | 2015-10-29 | 2015-10-29 | The symmetrical by-pass collar of pressure of Double flow path turbo-charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510719726.5A CN105257348B (en) | 2015-10-29 | 2015-10-29 | The symmetrical by-pass collar of pressure of Double flow path turbo-charger |
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| Publication Number | Publication Date |
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| CN105257348A CN105257348A (en) | 2016-01-20 |
| CN105257348B true CN105257348B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510719726.5A Active CN105257348B (en) | 2015-10-29 | 2015-10-29 | The symmetrical by-pass collar of pressure of Double flow path turbo-charger |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10072565B2 (en) * | 2016-06-15 | 2018-09-11 | GM Global Technology Operations LLC | Wastegate closed position detent feature |
| GB201617858D0 (en) * | 2016-10-21 | 2016-12-07 | Cummins Ltd | Method of design of a turbine |
| CN108869013A (en) * | 2018-08-16 | 2018-11-23 | 湖南天雁机械有限责任公司 | Deflation valve and dual channel exhaust-driven turbo-charger exhaust-gas turbo charger |
Citations (2)
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| CN101975105A (en) * | 2010-09-14 | 2011-02-16 | 康跃科技股份有限公司 | Double-channel turbine bypass bleeding device |
| KR20110062189A (en) * | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | Twin scroll turbine housing of turbo charger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4613288A (en) * | 1983-05-26 | 1986-09-23 | The Garrett Corporation | Turbocharger |
| DE10232738B4 (en) * | 2002-07-19 | 2005-04-21 | Audi Ag | Arrangement of at least two exhaust gas turbochargers |
| JP5106818B2 (en) * | 2006-10-20 | 2012-12-26 | 三菱重工業株式会社 | Exhaust turbocharger structure with wastegate valve |
| DE102010013702A1 (en) * | 2010-04-01 | 2011-10-06 | Continental Automotive Gmbh | Turbine for exhaust gas turbocharger, particularly for motor vehicle, has turbine housing and waste gate-valve which has waste gate-flap that controls flue gas volume passing through waste gate-valve |
| CN102182544B (en) * | 2011-03-01 | 2012-11-07 | 康跃科技股份有限公司 | Air inlet regulating device of flow-passage-changeable turbine |
| CN203476407U (en) * | 2013-05-15 | 2014-03-12 | 无锡康明斯涡轮增压技术有限公司 | Turbocharger volute assembly |
| CN104110300B (en) * | 2014-08-06 | 2017-05-10 | 无锡康明斯涡轮增压技术有限公司 | Turbocharger |
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2015
- 2015-10-29 CN CN201510719726.5A patent/CN105257348B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110062189A (en) * | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | Twin scroll turbine housing of turbo charger |
| CN101975105A (en) * | 2010-09-14 | 2011-02-16 | 康跃科技股份有限公司 | Double-channel turbine bypass bleeding device |
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| CN105257348A (en) | 2016-01-20 |
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