CN204755575U - Novel turbo charger floating bearing - Google Patents
Novel turbo charger floating bearing Download PDFInfo
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- CN204755575U CN204755575U CN201520329655.3U CN201520329655U CN204755575U CN 204755575 U CN204755575 U CN 204755575U CN 201520329655 U CN201520329655 U CN 201520329655U CN 204755575 U CN204755575 U CN 204755575U
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- Prior art keywords
- floating bearing
- working surface
- oil film
- bearing body
- film wedge
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model discloses a novel turbo charger floating bearing, including the floating bearing body, the outer surface of the work of floating bearing body is provided with annular oil groove, and the circumference interval arrangement has a plurality of lubricate holes that run through the wall of floating bearing body on the annular oil groove, and the outer surface of the work circumference of floating bearing body is provided with a plurality of outer surface of the work oil wedge faces, and the interior surface of the work circumference of floating bearing body is provided with a plurality of interior surface of the work oil wedge faces. The beneficial effects of the utility model reside in that producing fluid dynamic pressure effect through the oil wedge face, can showing improvement turbo charger floating bearing oil film bearing capacity, reduce the swing of rotor shaft, two stayed surfaces of effective isolation reduce the friction and wear of floating bearing, improve turbo charger's transient response characteristic, reliability and life. Additionally, the utility model discloses still effectively overcome the oil pressure and not enough and cause floating bearing inordinate wear phenomenon, can adapt to comparatively abominable operational environment, showing and strengthened the vice lubricated friction and wear characteristic of friction.
Description
Technical field
The utility model relates to turbocharger of motor technical field, particularly a kind of novel turbocharger floating bearing.
Background technique
Turbosupercharging is a kind of technology residual amount of energy in engine exhaust being converted into raising effective engine power.This technology not only can significantly improve the power character of motor, reduces the fuel oil consumption of motor, also effectively can reduce the harmful components in motor discharging waste gas, have energy-saving and environmental protection effect.This technology is also the important means that plateau section engine power is recovered simultaneously, makes the service condition of starting functional adaptation different altitude height.So technology for Turbocharger Manufacturing has become the development trend of motor.
Floating bearing is at one of the important composition parts of turbosupercharger, its Main Function relies on internal surface and outer surface to form oil film to do high speed rotary motion to support turbocharger rotor axle, and the effectively vibration that produces under operating conditions of buffering pressurized machine and avoid radial force to cause the fretting wear of pressurized machine core part.Along with Modern Engine reinforcing degree constantly strengthens and light-weight design, special various countries require more and more stricter to environmental legislation, cause the continuous miniaturization of turbosupercharger, structure further compact, its working speed improves constantly, and the further severe and lubrication of operating mode, cool condition are more severe.Do the floating bearing of high speed rotary motion as support turbocharger rotor axle, the rotor shaft rotating speed that it bears, vibration and radial force are also increasing, and this design to floating bearing of turbo-charger, manufacture are had higher requirement.
In turbocharger arrangement design, the design of floating bearing is very important, not only affects structural reliability and the working life of turbosupercharger, but also affects the mechanical efficiency of turbosupercharger.Research shows: floating bearing of turbo-charger frictional power loss accounts for more than 50% of total mechanical loss in efficiency, greatly affects transient response characteristic and the usability of turbosupercharger.Bearing is the weak link in supercharger structure simultaneously, depend on the life-span of bearing the working life of pressurized machine to a great extent, bearing is once damage, whole pressurized machine just cannot work, therefore the usability of floating bearing, reliability and working life have material impact to the performance of turbosupercharger and life-span.
The main method of current raising floating bearing of turbo-charger bearing capacity increases floating bearing oil inlet hole aperture, thus the flow of lubricating oil filling improves lubricating bearing characteristic, but the deficiency of the method is: the engine oil pressure of motor is certain, therefore increase floating bearing oil inlet hole aperture and can only increase a small amount of flow of lubrication, limited to raising bearing capacity.
Model utility content
The purpose of this utility model is above-mentioned deficiency for existing floating bearing and defect, provides a kind of novel turbocharger floating bearing significantly improving floating bearing of turbo-charger loading capacity of oil film, to solve the problem.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of novel turbocharger floating bearing, comprise floating bearing body, the outer working surface of described floating bearing body is provided with annular oil groove, on described annular oil groove, circumferential interval is furnished with some oilholes running through the wall of described floating bearing body, it is characterized in that, the outer working surface circumference of described floating bearing body is provided with some outer working surface oil film wedge faces, and the interior working surface circumference of described floating bearing body is provided with some interior working surface oil film wedge faces.
In a preferred embodiment of the present utility model, it is identical with the sense of rotation of turbocharger rotor axle that cross section, described interior working surface oil film wedge face reduces direction gradually, and it is contrary with the sense of rotation of turbocharger rotor axle that cross section, described outer working surface oil film wedge face reduces direction gradually.
In a preferred embodiment of the present utility model, mutually stagger and arrange in described interior working surface oil film wedge face and described outer working surface oil film wedge face.
In a preferred embodiment of the present utility model, the cross section in described interior working surface oil film wedge face and described outer working surface oil film wedge face is triangle or curved surface or stepped shaft or cylinder shape.
In a preferred embodiment of the present utility model, a wherein end face of described floating bearing body is provided with assembling mistake proofing mark.
In a preferred embodiment of the present utility model, by outer chamfered transition between the both ends of the surface of described floating bearing body and described outer working surface.
In a preferred embodiment of the present utility model, by interior chamfered transition between the both ends of the surface of described floating bearing body and described interior working surface.
Owing to have employed technological scheme as above, the beneficial effects of the utility model are:
1, hydrodynamic effect is produced by oil film wedge face, floating bearing of turbo-charger loading capacity of oil film can be significantly improved, reduce the swing of rotor shaft, effective isolation two stayed surface, reduce the fretting wear of floating bearing, improve the transient response characteristic of turbosupercharger, reliability and working life;
2, when engine start/stop etc. under insufficient lubrication operating mode, be stored in the lubricant oil in oil film wedge face to overflow under the driving of frictional force, supplement the Lubricants needed for surface of friction pair, thus formation is extruded due to radially wobbling of rotor shaft the effectively lubricating of its circumferential surface or the lubricant oil be stored in oil film wedge face, form squeeze film, increase oil film rigidity, effectively overcome oil pressure deficiency and cause floating bearing inordinate wear phenomenon, comparatively severe working environment can be adapted to, significantly enhance the lubrication friction wearing character of friction pair;
A wherein end face of 3, floating bearing body is provided with assembling mistake proofing mark, effectively avoids the dislocation of floating bearing in turbosupercharger assembly process to assemble.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 a is the schematic cross-section in the interior working surface oil film wedge face (or outer working surface oil film wedge face) of the first embodiment of the utility model.
Fig. 3 b is the schematic cross-section in the interior working surface oil film wedge face (or outer working surface oil film wedge face) of the utility model the second embodiment.
Fig. 3 c is the schematic cross-section in the interior working surface oil film wedge face (or outer working surface oil film wedge face) of the third embodiment of the utility model.
Fig. 3 d is the schematic cross-section in the interior working surface oil film wedge face (or outer working surface oil film wedge face) of the utility model the 4th kind of embodiment.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, setting forth the utility model further below.
See a kind of novel turbocharger floating bearing shown in Fig. 1 and Fig. 2, comprise floating bearing body 100, the floating bearing body 100 in the present embodiment adopts the materials such as cast copper, stainless steel, powder metallurgy, ensures that floating bearing structure has good wear resistance.Annular oil groove 111 is coaxially arranged with in the middle part of the outer working surface 110 of floating bearing body 100, on annular oil groove 111, circumferential interval is furnished with some oilholes 112 running through the wall of floating bearing body 100, and the quantity of oilhole 112 can need according to concrete use and arrange, the oilhole 112 in the present embodiment is six.
Outer working surface 110 circumference of floating bearing body 100 is provided with some outer working surface oil film wedge faces 113, and interior working surface 120 circumference of floating bearing body 100 is provided with some interior working surface oil film wedge faces 123.The quantity in outer working surface oil film wedge face 113 and interior working surface oil film wedge face 123 can need according to concrete use and arrange, and the outer working surface oil film wedge face 113 in the present embodiment and interior working surface oil film wedge face 123 are respectively three.Operationally, outer working surface oil film wedge face 113 and interior working surface oil film wedge face 123 produce hydrodynamic effect, floating bearing of turbo-charger loading capacity of oil film can be significantly improved, reduce the swing of rotor shaft, effective isolation two stayed surface, reduce the fretting wear of floating bearing, improve the transient response characteristic of turbosupercharger, reliability and working life.In addition, when engine start/stop etc. under insufficient lubrication operating mode, be stored in the lubricant oil in oil film wedge face to overflow under the driving of frictional force, supplement the Lubricants needed for surface of friction pair, thus formation is extruded due to radially wobbling of rotor shaft the effectively lubricating of its circumferential surface or the lubricant oil be stored in oil film wedge face, form squeeze film, increase oil film rigidity, effectively overcome oil pressure deficiency and cause floating bearing inordinate wear phenomenon, comparatively severe working environment can be adapted to, significantly enhance the lubrication friction wearing character of friction pair.
In order to improve the effect of hydrodynamic effect further, it is identical with the sense of rotation w of turbocharger rotor axle that cross section, interior working surface oil film wedge face 123 in the present embodiment reduces direction gradually, and it is contrary with the sense of rotation w of turbocharger rotor axle that cross section, outer working surface oil film wedge face 113 reduces direction gradually.Shown in composition graphs 3a, interior working surface oil film wedge face 123 in the present embodiment and the cross section in outer working surface oil film wedge face 113 are triangle, namely in, working surface oil film wedge face 123 and outer working surface oil film wedge face 113 comprise cliff of displacement face 123a, 113a and inclined-plane 123b, 113b respectively, and the upper end of inclined-plane 123b, 113b is connected with interior working surface 120, outer working surface 110 transition, the lower end of inclined-plane 123b, 113b is connected with the bottom of the cliff of displacement face 123a, 113a.Certainly, also the cross section in working surface oil film wedge face 123 in the present embodiment and outer working surface oil film wedge face 113 can be set to stepped shaft (as shown in Figure 3 b) or curved surface (as shown in Figure 3 c) or cylinder shape (as shown in Figure 3 d).And the axial length in interior working surface oil film wedge face 123 and outer working surface oil film wedge face 113, radial width L and radial height Hp can determine according to concrete need of work.Interior working surface oil film wedge face 123 in the present embodiment is the same with the axial height of floating bearing body 100 with the axial length in outer working surface oil film wedge face 113, radial width L=1 ~ the 5mm in interior working surface oil film wedge face 123 and outer working surface oil film wedge face 113, radial height Hp=0.2 ~ 1.5mm.
The dislocation assembling of floating bearing in turbosupercharger assembly process, a wherein end face of floating bearing body 100 is provided with assembling mistake proofing mark 130.And the cross section of assembling mistake proofing mark 130 can be the marks such as triangle, circle or character.
Mutually staggering with outer working surface oil film wedge face 113 and arrange in three in the present embodiment interior working surface oil film wedge faces 123, makes lubricant oil be evenly distributed on working surface periphery, form uniform squeeze film and avoid the weakening to floating bearing bulk strength.
In order to make, floating bearing body 100 is convenient to be assembled, by outer inclined-plane 140 transition between the both ends of the surface of floating bearing body 100 and outer working surface 110 with bearing support.
In order to make, floating bearing body 100 is convenient to be assembled, by outer inclined-plane 150 transition between the both ends of the surface of floating bearing body 100 and interior working surface 120 with rotor shaft.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a novel turbocharger floating bearing, comprise floating bearing body, the outer working surface of described floating bearing body is provided with annular oil groove, on described annular oil groove, circumferential interval is furnished with some oilholes running through the wall of described floating bearing body, it is characterized in that, the outer working surface circumference of described floating bearing body is provided with some outer working surface oil film wedge faces, and the interior working surface circumference of described floating bearing body is provided with some interior working surface oil film wedge faces.
2. a kind of novel turbocharger floating bearing as claimed in claim 1, it is characterized in that, it is identical with the sense of rotation of turbocharger rotor axle that cross section, described interior working surface oil film wedge face reduces direction gradually, and it is contrary with the sense of rotation of turbocharger rotor axle that cross section, described outer working surface oil film wedge face reduces direction gradually.
3. a kind of novel turbocharger floating bearing as claimed in claim 2, is characterized in that, mutually staggers and arrange in described interior working surface oil film wedge face and described outer working surface oil film wedge face.
4. a kind of novel turbocharger floating bearing as described in claim 1 or 2 or 3, is characterized in that, the cross section in described interior working surface oil film wedge face and described outer working surface oil film wedge face is triangle or curved surface or stepped shaft or cylinder shape.
5. a kind of novel turbocharger floating bearing as claimed in claim 1, is characterized in that, a wherein end face of described floating bearing body is provided with assembling mistake proofing mark.
6. a kind of novel turbocharger floating bearing as claimed in claim 1, is characterized in that, by outer chamfered transition between the both ends of the surface of described floating bearing body and described outer working surface.
7. a kind of novel turbocharger floating bearing as claimed in claim 1, is characterized in that, by interior chamfered transition between the both ends of the surface of described floating bearing body and described interior working surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329655.3U CN204755575U (en) | 2015-05-20 | 2015-05-20 | Novel turbo charger floating bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520329655.3U CN204755575U (en) | 2015-05-20 | 2015-05-20 | Novel turbo charger floating bearing |
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| Publication Number | Publication Date |
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| CN204755575U true CN204755575U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520329655.3U Expired - Fee Related CN204755575U (en) | 2015-05-20 | 2015-05-20 | Novel turbo charger floating bearing |
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| CN (1) | CN204755575U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847785A (en) * | 2015-05-20 | 2015-08-19 | 湖南天雁机械有限责任公司 | Novel floating bearing for turbocharger |
| CN106640352A (en) * | 2016-12-28 | 2017-05-10 | 宁波丰沃涡轮增压***有限公司 | Turbocharger using ball full floating bearings |
| CN109236723A (en) * | 2017-07-11 | 2019-01-18 | 通用汽车环球科技运作有限责任公司 | Turbo-charger bearing |
-
2015
- 2015-05-20 CN CN201520329655.3U patent/CN204755575U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847785A (en) * | 2015-05-20 | 2015-08-19 | 湖南天雁机械有限责任公司 | Novel floating bearing for turbocharger |
| CN104847785B (en) * | 2015-05-20 | 2017-12-26 | 湖南天雁机械有限责任公司 | A kind of floating bearing of turbo-charger |
| CN106640352A (en) * | 2016-12-28 | 2017-05-10 | 宁波丰沃涡轮增压***有限公司 | Turbocharger using ball full floating bearings |
| CN106640352B (en) * | 2016-12-28 | 2021-07-30 | 宁波丰沃增压科技股份有限公司 | Turbocharger using ball full-floating bearing |
| CN109236723A (en) * | 2017-07-11 | 2019-01-18 | 通用汽车环球科技运作有限责任公司 | Turbo-charger bearing |
| US10190634B1 (en) * | 2017-07-11 | 2019-01-29 | GM Global Technology Operations LLC | Turbo-charger bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20180520 |