CN102536438A - Sliding section-variable device of turbine shell - Google Patents
Sliding section-variable device of turbine shell Download PDFInfo
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- CN102536438A CN102536438A CN2012100158181A CN201210015818A CN102536438A CN 102536438 A CN102536438 A CN 102536438A CN 2012100158181 A CN2012100158181 A CN 2012100158181A CN 201210015818 A CN201210015818 A CN 201210015818A CN 102536438 A CN102536438 A CN 102536438A
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- turbine case
- ring
- variable cross
- right sides
- controlling element
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention belongs to the technical field of turbine pressurization of an internal combustion engine, and relates to a sliding section-variable device of a turbine shell for a section-variable supercharger, comprising a turbine shell, a sliding valve sleeve, a bearing mechanism and an actuator transmission mechanism; the turbine shell is internally provided with a fixed nozzle ring; the bearing mechanism comprises a bearing seat and a mixed ceramic ball bearing; the mixed ceramic ball bearing is sleeved on an outer ring of the bearing seat; the sliding valve sleeve is sleeved on the bearing seat; and the actuator transmission mechanism comprises a transmission shaft, a left and a right bushings, a Y-shaped rocker bracket, a left and a right sliding blocks, a left and a right runners and a left and a right threaded connection columns. The sliding section-variable device of the turbine shell has the advantages of practical and reasonable structure, compact layout space, high reliability and lower cost, and solves the problems of poor sealing performance, low service life and reliability, complicated structure, high cost and the like of a traditional section-variable supercharger of a fixed nozzle ring.
Description
Technical field
The invention belongs to the turbocharging technology field of internal-combustion engine, relate to a kind of turbine case slip variable cross section device that is used for the variable cross section pressurized machine.
Background technique
Traditional bypass valve formula turbosupercharger is controlled the unlatching and closure of turbine case venting valve through final controlling element.When pressurized machine ran up under the full engine load state, the venting valve open was released a part of waste gas and is prevented pressurized machine overload, when running up the exhaust energy loss bigger, can cause pumping loss too high, the relatively poor problem of booster performance during high speed; In low speed transient response ability to, traditional bypass valve formula turbosupercharger also slowly shows problem.
In recent years along with the improving constantly of automobile exhaust emission standard, but it is wider that the requirement of efficiency of turbocharger is also improved adaptation condition, and the variable cross section pressurized machine is constantly developed.The variable cross section pressurized machine is not through the bleed valve venting; But regulate secondary speed through the gas communication cross section that changes turbine case; Adopt the variable cross section pressurized machine; The turbo problem that exhaust energy loses under the little slow-speed of revolution improves, and its operating mode application area is broad more, and efficient in all speed range and fuel-economizing performance all are higher than the turbosupercharger of bypass valve formula.
Existing variable cross section pressurized machine is divided into three major types:
1) volute suction port variable cross section pressurized machine: its technological scheme that adopts is at the turbine case suction port suction port cross section controlling device to be installed, and changes the waste gas actual internal area of volute inlet through the folding of suction port cross section controlling device.
2) ligulate baffle plate variable cross section pressurized machine: its technological scheme that adopts is at turbine case air-flow path inner chamber an adjustable ligulate baffle plate to be installed, and promotes the ligulate baffle plate through waste gas and swings the ratio that changes turbine case air-flow path sectional area and radius.
3) nozzle ring variable cross section pressurized machine: be divided into variable-nozzle ring type and fixed nozzle ring type again.The working principle of variable nozzle ring variable cross section pressurized machine is: the nozzle blade of employing activity through regulating the angle of nozzle blade, changes angle and speed that interior waste gas circulation area of turbine case and waste gas flow into turbine, thereby changes the rotating speed of turbine.The working principle of fixed nozzle ring type variable cross section pressurized machine is: nozzle blade immobilizes, and the translating device through the volute inner chamber changes the waste gas circulation area in the turbine case, thereby changes the rotating speed of turbine.
The common advantage of above-mentioned first, second two kinds of variable cross section pressurized machines is simple in structure, and is with low cost, but because exhaust-gas flow loss and regulation range restriction are bigger, total efficiency is lower.The regulation range of the third nozzle ring variable cross section pressurized machine is wide; Operating conditions at whole motor can both keep higher efficient; Surface friction drag is big, complex structure but existing variable cross section device also exists, and reliability is hanged down and caused being difficult to working life assurance, higher these problems of cost.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency; Thereby a kind of turbine case slip variable cross section device is provided, can solves the poor sealing performance that exists in the conventional fixed formula nozzle ring variable cross section supercharging technology, be prone to problems such as carbon distribution, resistance is high, reliability is low, with high costs.
According to technological scheme provided by the invention; Turbine case slip variable cross section device mainly comprises turbine case, slip valve pocket, gear mechanism and final controlling element driving mechanism; The built-in fixed nozzle ring of said turbine case; Said gear mechanism comprises bearing support and hybrid ceramic ball bearing, and said hybrid ceramic ball bearing is sleeved on the bearing support outer ring; Said slide-valve cover is sleeved on the bearing support; Said final controlling element driving mechanism by transmission shaft, left and right sides lining, Y type rocker arm support, left and right sides slide block, left and right sides chute and about the post that is threaded form; Said left and right sides lining is installed on the transmission shaft, and driving sleeve is contained in Y type rocker arm support upper end, and a final controlling element rocker part is installed in the outer end; Final controlling element is installed on the final controlling element rocker part; Said Y type rocker arm support two ends are installed in the chute of the left and right sides through left and right sides slide block respectively, and on the post that is threaded about said left and right sides chute is installed in respectively again, the post symmetry that is threaded about said is installed on its right end face of slip valve pocket.
Adopt labyrinth seal structure between said gear mechanism and the slip valve pocket.Said labyrinth seal structure is to be located on the outer ring side of bearing support near fixed nozzle ring to process at least one ring packing groove.Be provided with the composite seal structure that seal ring and clamp ring are formed between said bearing support and the slip valve pocket.Process several dividing potential drop compensating grooves on the die cavity in the said turbine case volute.Said final controlling element driving mechanism is installed in the ring cavity of bearing support, is an independently closing means.Lining two ends, the said left and right sides are provided with back-up ring.
Structure of the present invention is rationally practical, and arrangement space is compact, and reliability is high; Cost is lower; Poor sealing performance, life-span and the reliability that has solved conventional fixed nozzle ring variable cross section pressurized machine is low, complex structure, problem such as with high costs, when motor is in different operating conditions, does work in driving mechanism through automatically controlled final controlling element; The promotion slide-valve is enclosed within the turbine case inner chamber and does axial translation, can change the actual internal area of gas in the turbine case.
Description of drawings
Accompanying drawing 1 is overall structure schematic representation-right elevation of the present invention.
Accompanying drawing 2 is overall structure schematic representation-plan views of the present invention.
Accompanying drawing 3 is the final controlling element driving mechanism schematic representation among the present invention.
Accompanying drawing 4 is the bearing seal structure schematic representation among the present invention.
Accompanying drawing 5 is the turbine case dividing potential drop compensating groove schematic representation among the present invention.
In the above accompanying drawing: 1-final controlling element rocker part; The 2-transmission shaft; 3-left side lining; The right lining of 4-; The 5-back-up ring; 6-Y type rocker arm support; The 7-left slider; The right slide block of 8-; 9-left side chute; The 10-right rail; 11-left hand thread attachment post; 12-right-hand thread attachment post; The 13-bearing support; 14-hybrid ceramic ball bearing; The 15-seal ring; The 16-clamp ring; 17-slip valve pocket; The 18-turbine case; The fixed nozzle ring of 19-; The A-final controlling element; B-dividing potential drop compensating groove; The C-labyrinth seal structure; The D-ring cavity.
Embodiment
Following the present invention will combine the embodiment in the accompanying drawing to further describe:
Like Fig. 1 ~ shown in Figure 5; Turbine case slip variable cross section device mainly comprises turbine case 18, slip valve pocket 17, gear mechanism and final controlling element driving mechanism; Through bolt fastening nozzle ring 19, said gear mechanism comprises bearing support 13 and hybrid ceramic ball bearing 14 compositions in the said turbine case 18, and said hybrid ceramic ball bearing 14 is sleeved on bearing support 13 outer rings; When left hand thread attachment post 11 axially moves with right-hand thread attachment post 12 promotion slip valve pockets 17; Because that ceramic bearing has is high temperature resistant, corrosion-resistant, friction factor is low, unlubricated oil characteristic such as the time also can work, the valve pocket moving resistance can reduce to slide; Reduce final controlling element moment of torsion output requirement, improve the stability of device.Said slip valve pocket 17 is sleeved on the bearing support 13; Said final controlling element driving mechanism is made up of transmission shaft 2, left lining 3, right lining 4, Y type rocker arm support 6, left slider 7, right slide block 8, left chute 9, right rail 10, left hand thread attachment post 11 and right-hand thread attachment post 12; Said left lining 3 is installed on the transmission shaft 2 with right lining 4 symmetries; Transmission shaft 2 is sleeved on Y type rocker arm support 6 upper ends; A final controlling element rocker part 1 is installed in the outer end, and final controlling element A is installed on the final controlling element rocker part 1, and said Y type rocker arm support 6 ends are installed in left chute 9 and the right rail 10 through left slider 7 and right slide block 8 respectively; Said left chute 9 is installed in respectively again on left hand thread attachment post 11 and the right-hand thread attachment post 12 with right rail 10, and said left hand thread attachment post 11 is installed on its right end face of slip valve pocket 17 with right-hand thread attachment post 12 symmetries.
Adopt labyrinth seal structure C between said gear mechanism and the slip valve pocket 17; Said labyrinth seal structure C is located on the outer ring side of bearing support 13 near fixed nozzle ring 19 to process at least one ring packing groove; Can avoid carbon distribution; The effect that increases the service life is arranged, form throttle clearance and expansion cavity between groove and the adjacent grooves.Waste gas produces throttle effect and reaches sealing purpose through the labyrinth gap between bearing support 13 and the slip valve pocket 17 time.Be provided with the composite seal structure of seal ring 15 and clamp ring 16 compositions between said bearing support 13 and the slip valve pocket 17,13 of seal ring 15 and bearing supports keep small design gaps, and effective seal action can be provided, and improve the stability of device.Process at least one dividing potential drop compensating groove B on the die cavity in said turbine case 18 volutes, can balance slip valve pocket the air pressure in the 17 inboard and outsides, thereby the resistance the when valve pocket 17 that reduces to slide moves.Said final controlling element driving mechanism is installed in the ring cavity D of bearing support 13, is an independently closing means, can avoid the waste gas of turbine case 18 to flow in the driving mechanism, reduces the carbon distribution in the driving mechanism, has improved the reliability of this device greatly.Said left lining 3 is provided with back-up ring 5 with right lining 4 two ends.
Working principle of the present invention is: when motor is in different operating conditionss; Do work in final controlling element rocker part 1 through final controlling element A; Promote transmission shaft 2 rotation in left lining 3 and right lining 4; Transmission shaft 2 drives 6 swings of Y type rocker arm support, and Y type rocker arm support 6 drives left slider 7 and slides in left chute 9 and right rail 10 with right slide block 8, thereby drives left hand thread attachment post 11 and right-hand thread attachment post 12.Left hand thread attachment post 11 and right-hand thread attachment post 12 promotes slip valve pockets 17 and between the inner chamber of bearing support 13 and turbine case 18, does axial translation, between slip valve pocket 17 and the bearing support 13 with hybrid ceramic ball bearing 14 positioning supports.Adopt labyrinth seal structure C, seal ring 15 and clamp ring 16 composite seal structures between bearing support 13 and the slip valve pocket 17.Turbine case 18 built-in fixed nozzle rings 19 can be regulated the air pressure in the inboard and outside of slip valve pocket 17 through the dividing potential drop compensating groove B on the die cavities in the turbine case 18, the resistance the when valve pocket 17 that reduces to slide moves.Through moving axially of slip valve pocket 17, change turbine case 18 interior exhaust flows and play the purpose of regulating the booster turbine rotating speed through the circulation area of nozzle ring 19.
Claims (7)
1. turbine case slip variable cross section device; Comprise turbine case (18) and gear mechanism; The built-in fixed nozzle ring of said turbine case (18) (19); Said gear mechanism comprises bearing support (13) and hybrid ceramic ball bearing (14) composition; Said hybrid ceramic ball bearing (14) is sleeved on bearing support (13) outer ring, it is characterized in that: also comprise slip valve pocket (17) and final controlling element driving mechanism, said slip valve pocket (17) is sleeved on the bearing support (13); Said final controlling element driving mechanism by transmission shaft (2), left and right sides lining (3,4), Y type rocker arm support (6), left and right sides slide block (7,8), left and right sides chute (9,10) and about the post (11,12) that is threaded form; Said left and right sides lining (3,4) is installed on the transmission shaft (2), and transmission shaft (2) is sleeved on Y type rocker arm support (6) upper end, and a final controlling element rocker part (1) is installed in the outer end; Final controlling element (A) is installed on the final controlling element rocker part (1); Said Y type rocker arm support (6) two ends are installed in the left and right sides chute (9,10) through left and right sides slide block (7,8) respectively, and on the post (11,12) that is threaded about said left and right sides chute (9,10) is installed in respectively again, post (11, the 12) symmetry that is threaded about said is installed on its right end face of slip valve pocket (17).
2. the turbine case according to claim 1 variable cross section device that endwisely slips is characterized in that: adopt labyrinth seal structure (C) between said gear mechanism and the slip valve pocket (17).
3. the turbine case according to claim 2 variable cross section device that endwisely slips, it is characterized in that: said labyrinth seal structure (C) processes at least one ring packing groove for being located on the side, outer ring of bearing support (13) near fixed nozzle ring (19).
4. the turbine case according to claim 1 variable cross section device that endwisely slips is characterized in that: be provided with the composite seal structure that seal ring (15) and clamp ring (16) are formed between said bearing support (13) and the slip valve pocket (17).
5. the turbine case according to claim 1 variable cross section device that endwisely slips is characterized in that: process at least one dividing potential drop compensating groove (B) on the die cavity in said turbine case (18) volute.
6. the turbine case according to claim 1 variable cross section device that endwisely slips, it is characterized in that: said final controlling element driving mechanism is installed in the ring cavity (D) of bearing support (13), is an independently closing means.
7. the turbine case according to claim 1 variable cross section device that endwisely slips, it is characterized in that: said left and right sides lining (3,4) two ends are provided with back-up ring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100158181A CN102536438A (en) | 2012-01-18 | 2012-01-18 | Sliding section-variable device of turbine shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100158181A CN102536438A (en) | 2012-01-18 | 2012-01-18 | Sliding section-variable device of turbine shell |
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| CN102536438A true CN102536438A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100158181A Pending CN102536438A (en) | 2012-01-18 | 2012-01-18 | Sliding section-variable device of turbine shell |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4571154A (en) * | 1983-06-29 | 1986-02-18 | Bbc Brown, Boveri & Company, Limited | Device for adjusting the turbine inlet flow cross-section of an exhaust gas turbocharger |
| US5044880A (en) * | 1988-05-17 | 1991-09-03 | Holset Engineering Company Limited | Variable geometry turbine actuator assembly |
| US5868552A (en) * | 1997-06-10 | 1999-02-09 | Holset Engineering Co., Ltd. | Variable geometry turbine |
| WO2006061588A1 (en) * | 2004-12-06 | 2006-06-15 | Imperial Innovations Ltd. | Flow control device for a turbocharger |
| JP2008185019A (en) * | 2007-01-31 | 2008-08-14 | Komatsu Ltd | Variable turbocharger |
| WO2009116380A1 (en) * | 2008-03-21 | 2009-09-24 | 株式会社小松製作所 | Hydraulic servo-drive device and variable turbo-supercharger using the same |
| CN202483710U (en) * | 2012-01-18 | 2012-10-10 | 无锡威孚英特迈增压技术有限公司 | Turbine shell sliding variable cross-section device |
-
2012
- 2012-01-18 CN CN2012100158181A patent/CN102536438A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4571154A (en) * | 1983-06-29 | 1986-02-18 | Bbc Brown, Boveri & Company, Limited | Device for adjusting the turbine inlet flow cross-section of an exhaust gas turbocharger |
| US5044880A (en) * | 1988-05-17 | 1991-09-03 | Holset Engineering Company Limited | Variable geometry turbine actuator assembly |
| US5868552A (en) * | 1997-06-10 | 1999-02-09 | Holset Engineering Co., Ltd. | Variable geometry turbine |
| JPH1172008A (en) * | 1997-06-10 | 1999-03-16 | Holset Eng Co Ltd | Variable form turbine |
| WO2006061588A1 (en) * | 2004-12-06 | 2006-06-15 | Imperial Innovations Ltd. | Flow control device for a turbocharger |
| JP2008185019A (en) * | 2007-01-31 | 2008-08-14 | Komatsu Ltd | Variable turbocharger |
| WO2009116380A1 (en) * | 2008-03-21 | 2009-09-24 | 株式会社小松製作所 | Hydraulic servo-drive device and variable turbo-supercharger using the same |
| CN202483710U (en) * | 2012-01-18 | 2012-10-10 | 无锡威孚英特迈增压技术有限公司 | Turbine shell sliding variable cross-section device |
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Application publication date: 20120704 |