CN104930052A - Turbocharger integral type bearing with locating mechanism - Google Patents

Turbocharger integral type bearing with locating mechanism Download PDF

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Publication number
CN104930052A
CN104930052A CN201510339601.XA CN201510339601A CN104930052A CN 104930052 A CN104930052 A CN 104930052A CN 201510339601 A CN201510339601 A CN 201510339601A CN 104930052 A CN104930052 A CN 104930052A
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CN
China
Prior art keywords
solid box
oil
integral type
positioning means
turbocharger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510339601.XA
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Chinese (zh)
Inventor
毕金光
李亚静
许成
王群
沃鸣杰
徐建辉
王保林
王瑞坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Weifu Tianli Turbocharging Technology Co Ltd
Original Assignee
Ningbo Weifu Tianli Turbocharging Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Weifu Tianli Turbocharging Technology Co Ltd filed Critical Ningbo Weifu Tianli Turbocharging Technology Co Ltd
Priority to CN201510339601.XA priority Critical patent/CN104930052A/en
Publication of CN104930052A publication Critical patent/CN104930052A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00Sliding-contact bearings for exclusively rotary movement
    • F16C17/10Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/23Gas turbine engines
    • F16C2360/24Turbochargers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02Sliding-contact bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supercharger (AREA)

Abstract

The invention discloses a turbocharger integral type bearing with a locating mechanism. The turbocharger integral type bearing with the locating mechanism comprises an integral type bearing body with an oil hole and the locating mechanism matched with the integral type bearing, wherein a shaft shoulder is arranged at the end, facing the locating mechanism, of the integral type bearing, and a notch is formed in the shaft shoulder; the locating mechanism comprises a locating pin matched with the notch, an anti-thrust press plate used for limiting the integral type bearing to move in the transverse direction and an oil sealing cover arranged outside the anti-thrust press plate. The turbocharger integral type bearing with the locating mechanism is simple in structure, the length of the rotor system is short, the mass is small, compared with a traditional turbocharger, the mechanism efficiency is improved by 3%-5% by average, and the low velocity section is improved by 8%-10%; the turbocharger integral type bearing with the locating mechanism is provided with an axial oil groove and capable of adjusting and balancing bearing oil feeding and returning flow, so that the stimulation of oil film whirl in the rotor system is restrained fundamentally, the vibration is controlled, the noise of the turbocharger is reduced, and the work stability is improved; meanwhile, the oil-bearing effect is achieved, under the condition of short oil insufficiency, the replenishing lubricating effect is achieved, it is guaranteed that the normal work state of the turbocharger is maintained, and the service life is prolonged.

Description

A kind of turbosupercharger solid box with positioning means
Technical field
The invention belongs to turbosupercharger accessory field, be specifically related to a kind of for the solid box with positioning means in turbosupercharger.
Background technique
Turbosupercharging is one of modal pressurization system in supercharged engine, turbosupercharging utilizes exhaust gas driven, in the identical unit time, the mixed gas of more air or air and fuel oil can be forced to clamp-on cylinder to burn, therefore can produce the Power output larger compared with natural intake engine under identical cylinder capacity.
It is built-in that the supporting structure of conventional turbocharger is commonly floating bearing, turbine and impeller cantilever configuration are outside two floating bearings, its axial equilibrium of forces adopts independent two-sided bearing disk, be arranged in the cold junction (gas compressor end) of pressurized machine, so bearing disk must have enough installing spaces.As the publication No. Chinese invention patent application " split type thrust bearing of turbocharger " that is CN103912577A discloses a kind of structure of thrust bearing, comprise the secondary thrust bearing of main thrust bearing and the close turbine end being located at supercharger air compressor end, simultaneously by the design to oil film wedge face structure, reduce fuel delivery, reduce mechanical loss, but inevitably there is thrust structure complexity, shortcoming that thrust part is many in this structure.
In addition, for preventing pressure side Leakage, mounting block oiled-plate method is also needed.Correspondingly pressurized machine shaft length certainly will increase, and rotor-support-foundation system rotating part number increases, and rotor quality is strengthened, and it is unfavorable to bring to the stability of rotating shaft work, and affects its mechanical efficiency.
For the lubrication of bearing, conventional turbocharger beats inclined hole in bearing support, and oil inlet passage is communicated on two floating bearings and a bearing disk respectively, makes lubricant oil flow to bearing, axle journal and thrust bearing oil film wedge face.Although this method can provide each bearing reasonable lubrication, there is some problems in the processing of bearing support inclined hole, clean and quality control etc.
In addition, research finds in the noise of turbosupercharger, and synchronous vibration noise is the most general, and the mechanical efficiency of pressurized machine and its responsiveness closely related.Along with the popularization of energy-saving and emission-reduction policy, turbosupercharger is more and more used on passenger car and car, for meeting the demand of car comfort and Driving, must control the Noise measarement of pressurized machine, need to improve supercharger rotor system works stability, and improve mechanical efficiency.
So, the technology to reaching appropriate balance between production relevant cost and performance is needed.The technology of the present invention is intended to solve this demand and other demands.
In prior art, limit the transverse movement of solid box by arranging one or more thrust bearing, complex structure, and thrust bearing is generally heavy, cause the increase of turbosupercharger overall weight and volume, it is unfavorable to bring to the stability of rotating shaft work, and affects its mechanical efficiency.
In the present invention, claimant breaches the limitation of conventional construction, from reducing part, weight reduction, simplifying the object of structure, by the cooperation of thrust pressing plate and positioning dowel, limit transverse movement and the rotary motion of solid box, while not reducing locating function, reach the object reducing number of parts, consequently reduce friction pair, improve mechanical efficiency.
As preferably, the internal surface of described solid box is provided with supporting plane, and described supporting plane is provided with axial oil groove, and this axial oil groove can be V-arrangement, U-shaped, semicircle etc., number be more than 3 or 3 uniform.
As preferably, described breach is arc notch, and described positioning dowel is provided with the disk that can partly enter in described arc notch.The center of circle of arc notch is concentric with disk, and the disk therefore in the middle part of positioning dowel is engaged just with arc notch, limits the rotary motion of solid box.
As preferably, leave space between described disk and arc notch, the diameter being specially disk and arc notch is unequal, makes solid box retain small amounts of rotation, plays certain buffer function.
As preferably, the described shaft shoulder is placed in the gap between solid box front-end face and thrust pressing plate end face, and the thickness of the shaft shoulder is less than gap width, guarantee that solid box leaves certain free gap vertically, allow solid box in the shifting amount axially having 0.035 ~ 0.105mm.
As preferably, described thrust pressing plate is provided with the hole of inserting for positioning dowel, for stationary positioned pin.
As preferably, described oil sealing cap is provided with seal ring, is provided with oil sealing cap back-up ring outside described oil sealing cap, ensures good oil sealing effect.
As preferably, the both sides of shown solid box are integrated by thrust bearing, and unitary design saves space.
Compared with prior art, the present invention has following beneficial effect: the integrated shaft bearing structure 1) with positioning means is simple, manufactures quality control conveniently, reliable operation; 2) rotor-support-foundation system length is short, and quality is light, and compared with conventional turbocharger, mechanical efficiency on average improves 3% ~ 5%, and low speed segment can improve 8% ~ 10%; 3) axial oil groove on the floating bearing bore area of radial support, can regulate and equalizer bearing oil inlet and oil return flow, fundamentally suppresses exciting of oil whirl in rotor-support-foundation system, controls vibration, reduce turbocharger noise, promote working stability; 4) axial oil groove has oil-containing effect, though when of short duration for shortage of oil, also play the effect of supplemental lubrication to a certain extent, ensure that turbosupercharger maintains normal working, extend pressurized machine working life.
Summary of the invention
For deficiency of the prior art, the invention provides a kind of turbosupercharger solid box with positioning means, simplify thrust mechanism and positioning means, decrease number of parts, improve mechanical efficiency.
The present invention is achieved through the following technical solutions.
Have a turbosupercharger solid box for positioning means, comprise the solid box being provided with oilhole, the positioning means coordinated with solid box, described solid box is provided with the shaft shoulder towards one end of positioning means, and the described shaft shoulder is provided with breach; Described positioning means comprise coordinate with described breach positioning dowel, for limit solid box transverse movement thrust pressing plate, be located at oil sealing cap outside thrust pressing plate.
Accompanying drawing explanation
Fig. 1 is the overall sectional view of solid box of the present invention and positioning means thereof.
Fig. 2 is lubrication system schematic diagram of the present invention.
Fig. 3 is oil film partial enlarged view inside and outside lubrication system.
Fig. 4 is the stereogram of bearing support.
Fig. 5 is the sectional view of bearing support.
Fig. 6 is the left view of bearing support.
Fig. 7 is the right elevation of bearing support.
Fig. 8 is the schematic diagram of positioning dowel.
Fig. 9 is the stereogram of thrust pressing plate.
Figure 10 is the opposite side stereogram of thrust pressing plate.
Figure 11 efficiency comparative schemes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
See Fig. 1 to Figure 10, a kind of turbosupercharger solid box with positioning means, comprise the solid box 10 being provided with oilhole 104, the positioning means coordinated with solid box 10, described solid box 10 is provided with the shaft shoulder 105 towards one end of positioning means, the described shaft shoulder 105 is provided with breach 103, and described breach 103 is arc notch; Described positioning means comprise positioning dowel 30, for limit solid box 10 transverse movement thrust pressing plate 40, be located at oil sealing cap 50 outside thrust pressing plate 40, described positioning dowel 30 is provided with the disk 301 that can partly enter in described arc notch; Described thrust pressing plate 40 is provided with the hole 403 of inserting for positioning dowel 30; Described oil sealing cap 50 is provided with seal ring 70, is provided with oil sealing cap back-up ring 60 outside described oil sealing cap 50; The both sides of shown solid box 10 are integrated with thrust bearing 101,111.
Specifically, shown in Fig. 1, comprise solid box 10, bearing support 20, positioning dowel 30, thrust pressing plate 40, oil sealing cap 50, oil sealing cap back-up ring 60 and O type circle 70.In the present invention, two aspects are comprised to the location of solid box 10: on the one hand limit it around turbocharger shaft 80(X axle) rotary motion; Limit on the one hand the translation of its (X-direction) vertically.For the former, at the one-sided of solid box 10, a shaft shoulder 105 is set, the shaft shoulder 105 is processed an arc notch, the center of circle of arc notch is concentric with the pin-and-hole 201 on bearing support 20, then in the middle part of positioning dowel 30, disk 301 is engaged just with breach 103, limits the rotary motion of solid box 10 around X-axis.Meanwhile, the diameter of disk 301 and breach 103 is also unequal, makes solid box 10 retain small amounts of rotation around X-axis.For the axial translation of solid box 10, thrust pressing plate 40 is adopted to limit, thrust pressing plate plane 401 and bearing support front-end face 203 are fitted, the left side of thrust pressing plate 40 is oil sealing cap 50, pushed down by oil sealing cap back-up ring 60 again, oil sealing cap back-up ring 60 loads in bearing support 20 circlip groove 202, each surface of contact is fitted simultaneously, thus secures the axial position of oil sealing cap 50, thrust pressing plate 40.The shaft shoulder 105 is between bearing support front-end face 203 and thrust pressing plate end face 401, and its thickness B is less than gap width Bc, guarantees that solid box 10 leaves certain free gap vertically, allows solid box 20 in the shifting amount axially having 0.035 ~ 0.105mm.
Oil sealing cap cylindrical is slotted, and the radial attachment face of itself and bearing support loads O type circle 70, plays seal action, prevent oil leak.
Fig. 2, Figure 3 shows that lubrication system of the present invention.Extreme pressure lubricant directly injects the first oil pocket 901 formed by bearing support internal surface and integrated shaft bearing outer surface through bearing support oilhole 209, be further divided into three tunnels: the left gap 902 between a road supply left side integrated shaft bearing outer surface and bearing support internal surface, form the outer oil film of pressure side floating bearing annular; Right end clearance 903 between one tunnel supply right side integrated shaft bearing outer surface and bearing support internal surface, forms the outer oil film of whirlpool end floating bearing annular; Last road flows to annular oil cavity 904 through oilhole 104, and annular oil cavity 904 is formed by solid box internal surface and rotating shaft 80 outer surface.Extreme pressure lubricant in annular oil cavity 904 flows into left annular space 905 left, forms oil film in pressure side floating bearing; Flow into right annular space 906 to the right, form oil film in the end floating bearing of whirlpool.
When turbocharger rotor rotary work, extreme pressure lubricant is full of gap and thrust bearing 101,111.Be power extruding lubricant film at the outer oil film at left gap 902 and right end clearance 903 place, there is larger damping, there is the ability absorbing rotor oscillation; In left annular space 905 and right annular space 906 place, oil film is power extruding and shears lubricant film, and have certain oil film rigidity and oil-film damping, oil film rigidity plays good supporting role to rotor simultaneously; The shearing oil film at thrust bearing 101,111 place has suitable rigidity, acts on impeller and the axial aerodynamic force of turbine rotor for carrying.Oil film rigidity and oil-film damping along with the factors such as pressurized machine working speed, stressing conditions, gap length different and change, make pressurized machine working stability in whole operating rotational speed range reliable.
As shown in Figures 4 to 7, the internal surface 109,110 of solid box 10 is respectively equipped with axial oil groove 102, ensures thrust bearing 101, the 111 normal fuel injection demand at solid box two ends.
The outer surface 107 of solid box 10 coordinates with bearing support internal surface, the surface engagement of internal surface 109,110 and rotating shaft 80, forms two floating bearings of radial support; And integrated thrust bearing 101,111 is an entirety in its both sides.Two floating bearing matching surface width can be equal, also can be unequal, and thrust bearing supporting plane is provided with the oil film wedge face of multiple uniform layout, and oil film wedge face may be the same or different.The left end shaft shoulder 105 is provided with arc notch 103, is engaged with positioning dowel 30, limits it and rotates.
See Fig. 8, in the middle part of the positioning dowel 30 shown in it, be provided with disk 301, be engaged with the arc notch 103 on the solid box shaft shoulder 105.
See Fig. 9 and Figure 10, the thrust pressing plate 40 shown in it is non-positive round structure, and hole 403 is overlapped as in the mandrel 303 of positioning dowel 30, limits its setting angle.
Figure 11 is efficiency comparative figure, and as can be seen from the figure, compared with conventional turbocharger, mechanical efficiency on average improves 3% ~ 5%, and low speed segment can improve 8% ~ 10%.
As can be seen from above concrete elaboration, the present invention breaches the limitation of conventional construction, from reducing part, weight reduction, simplifying the object of structure, by the cooperation of thrust pressing plate and positioning dowel, limit transverse movement and the rotary motion of solid box, provide all-in-one-piece thrust bearing simultaneously.While not reducing locating function, reach the object reducing number of parts, consequently reduce friction pair, improve mechanical efficiency.
Protection scope of the present invention includes but not limited to above mode of execution, and protection scope of the present invention is as the criterion with claims, and any replacement that those skilled in the art will find apparent that, distortion, improvement made this technology all falls into protection scope of the present invention.

Claims (8)

1. one kind has the turbosupercharger solid box of positioning means, comprise the solid box (10) being provided with oilhole (104), the positioning means coordinated with solid box (10), it is characterized in that, described solid box (10) is provided with the shaft shoulder (105) towards one end of positioning means, and the described shaft shoulder (105) is provided with breach (103); Described positioning means comprise coordinate with described breach (103) positioning dowel (30), for limit solid box 10 transverse movement thrust pressing plate (40), be located at thrust pressing plate (40) outside oil sealing cap (50).
2. a kind of turbosupercharger solid box with positioning means according to claim 1, it is characterized in that, the internal surface of described solid box (10) is provided with supporting plane (109,110), described supporting plane (109,110) is provided with axial oil groove (102).
3. a kind of turbosupercharger solid box with positioning means according to claim 2, it is characterized in that, described breach (103) is arc notch, and described positioning dowel (30) is provided with the disk (301) that can partly enter in described arc notch.
4. a kind of turbosupercharger solid box with positioning means according to claim 3, is characterized in that, leave space between described disk (301) and arc notch.
5. a kind of turbosupercharger solid box with positioning means according to claim 3, it is characterized in that, the described shaft shoulder (105) is placed in the gap between bearing support front-end face (203) and thrust pressing plate end face (401), and the thickness of the shaft shoulder (105) is less than gap width.
6. a kind of turbosupercharger solid box with positioning means according to any one of claim 1 to 5, is characterized in that, described thrust pressing plate (40) is provided with the hole (403) of inserting for positioning dowel (30).
7. a kind of turbosupercharger solid box with positioning means according to claim 6, it is characterized in that, described oil sealing cap (50) is provided with seal ring (70), and described oil sealing cap (50) outside is provided with oil sealing cap back-up ring (60).
8. a kind of turbosupercharger solid box with positioning means according to claim 7, is characterized in that, the both sides of shown solid box (10) are integrated with thrust bearing (101,111).
CN201510339601.XA 2015-06-18 2015-06-18 Turbocharger integral type bearing with locating mechanism Pending CN104930052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812789A (en) * 2015-11-30 2017-06-09 美国滚柱轴承公司 It is hinged wing self-lubricating thrust bearing
CN109488690A (en) * 2018-12-25 2019-03-19 天津北方天力增压技术有限公司 A kind of floating bearing of turbocharger
CN109519237A (en) * 2018-12-25 2019-03-26 天津北方天力增压技术有限公司 A kind of ball-bearing turbocharger with high performance
WO2019078802A1 (en) * 2017-10-18 2019-04-25 Borusan Teknoloji̇ Geli̇şti̇rme Ve Arge A.Ş. A turbo bearing system
CN112833045A (en) * 2021-01-12 2021-05-25 大连中车泽通机械有限公司 Thrust bearing system structure of turbocharger
CN115949494A (en) * 2023-03-13 2023-04-11 宁波威孚天力增压技术股份有限公司 Ball bearing turbocharger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887516A2 (en) * 1997-06-26 1998-12-30 Ishikawajima-Harima Heavy Industries Co., Ltd. Supercharger thrust bearing
CN202991152U (en) * 2012-11-12 2013-06-12 湖南天雁机械有限责任公司 Integrated floating bearing positioning structure for gasoline engine turbocharger
CN203082010U (en) * 2012-12-19 2013-07-24 丹东临港产业园区和本精密机械有限公司 Gasoline engine supercharger bearing
CN203948460U (en) * 2014-07-15 2014-11-19 浙江荣发动力有限公司 A kind of floating bearing structure for small sized turbocharger
CN204140200U (en) * 2014-09-17 2015-02-04 宁波威孚天力增压技术有限公司 A kind of novel turbocharger
CN204755574U (en) * 2015-06-18 2015-11-11 宁波威孚天力增压技术有限公司 Integral bearing of turbo charger with positioning mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887516A2 (en) * 1997-06-26 1998-12-30 Ishikawajima-Harima Heavy Industries Co., Ltd. Supercharger thrust bearing
CN202991152U (en) * 2012-11-12 2013-06-12 湖南天雁机械有限责任公司 Integrated floating bearing positioning structure for gasoline engine turbocharger
CN203082010U (en) * 2012-12-19 2013-07-24 丹东临港产业园区和本精密机械有限公司 Gasoline engine supercharger bearing
CN203948460U (en) * 2014-07-15 2014-11-19 浙江荣发动力有限公司 A kind of floating bearing structure for small sized turbocharger
CN204140200U (en) * 2014-09-17 2015-02-04 宁波威孚天力增压技术有限公司 A kind of novel turbocharger
CN204755574U (en) * 2015-06-18 2015-11-11 宁波威孚天力增压技术有限公司 Integral bearing of turbo charger with positioning mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106812789A (en) * 2015-11-30 2017-06-09 美国滚柱轴承公司 It is hinged wing self-lubricating thrust bearing
CN106812789B (en) * 2015-11-30 2018-10-26 美国滚柱轴承公司 Hinged wing self-lubricating thrust bearing
WO2019078802A1 (en) * 2017-10-18 2019-04-25 Borusan Teknoloji̇ Geli̇şti̇rme Ve Arge A.Ş. A turbo bearing system
CN109488690A (en) * 2018-12-25 2019-03-19 天津北方天力增压技术有限公司 A kind of floating bearing of turbocharger
CN109519237A (en) * 2018-12-25 2019-03-26 天津北方天力增压技术有限公司 A kind of ball-bearing turbocharger with high performance
CN112833045A (en) * 2021-01-12 2021-05-25 大连中车泽通机械有限公司 Thrust bearing system structure of turbocharger
CN115949494A (en) * 2023-03-13 2023-04-11 宁波威孚天力增压技术股份有限公司 Ball bearing turbocharger

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Application publication date: 20150923