CN103953431A - Small gasoline engine turbosuperchager - Google Patents
Small gasoline engine turbosuperchager Download PDFInfo
- Publication number
- CN103953431A CN103953431A CN201310743386.0A CN201310743386A CN103953431A CN 103953431 A CN103953431 A CN 103953431A CN 201310743386 A CN201310743386 A CN 201310743386A CN 103953431 A CN103953431 A CN 103953431A
- Authority
- CN
- China
- Prior art keywords
- oil groove
- radially
- face
- bearing
- gasoline engine
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/1075—Wedges, e.g. ramps or lobes, for generating pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/047—Sliding-contact bearings for exclusively rotary movement for axial load only with fixed wedges to generate hydrodynamic pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/23—Gas turbine engines
- F16C2360/24—Turbochargers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/02—Sliding-contact bearings
Abstract
The invention belongs to the field of turbosuperchagers, and particularly relates to a small gasoline engine turbosuperchager, which comprises a volute, a turbine rotor, a midbody, a bearing, a locating pin, a clamping roller and a press case, wherein the volute sleeves the turbine rotor so as to be connected with one end of the midbody; the press case sleeves the clamping roller so as to be connected with the other end of the midbody; the bearing is matched between the turbine rotor and the midbody so as to be located through the locating pin; the bearing is a floating bearing; one end of the floating bearing is propped against an end face of a turbine in the turbine rotor, and the other end of the floating bearing is propped against the end face of the clamping roller through a shaft seal; an oil groove, a plane and an oil wedge surface are arranged on the end face of the floating bearing; the circumference of the oil wedge surface is an inclined surface. The small gasoline engine turbosuperchager has the advantages that the quantity of parts of the supercharger is reduced, the structure is simplified, the length of the rotor and the length of the supercharger are shortened, and the cost of the supercharger is reduced.
Description
Technical field
The invention belongs to field of turbochargers, specifically a kind of miniature gasoline engine turbosupercharger.
Background technique
Motor adopts turbocharging technology can increase substantially power, reduce exhaust pollution, improve economic performance, and turbosupercharger is one of topmost technological development direction of internal-combustion engine.Therefore, turbosupercharger has obtained increasingly extensive application in recent years.At present, whole world commercial car (truck, motorbus) more than 90% configures pressurized machine, and passenger car approximately has 10%, and to have adopted pressurized machine, developing direction be 100% employing.At present the ratio with more than 10% of whole world turbosupercharger increases progressively, and domestic ratio with 30% left and right increases progressively.Particularly miniature gasoline engine, the turbosupercharger market demand is huge, has a extensive future.
Summary of the invention
The invention provides a kind of compact structure, efficiency miniature gasoline engine turbosupercharger high, with low cost.
The invention provides following technological scheme:
Miniature gasoline engine turbosupercharger, it comprises volute, turbine rotor, intermediate, bearing, locating stud, pinch roller and pressure shell, volute is set on turbine rotor and is connected with intermediate one end, pressure shell is set on pinch roller and is connected with the other end of intermediate, bearing fit positions by locating stud between turbine rotor and intermediate, described bearing is floating bearing, floating bearing one end props up the end face of turbine in turbine rotor, the other end props up the end face of pinch roller by shaft seal, the end face of floating bearing is provided with oil groove, plane and oil film wedge face, described oil film wedge face is circumferentially inclined-plane.
Described floating bearing side face is provided with radially oil groove, left axial oil groove, middle axial oil groove, right axial oil groove and radially oil groove of right-hand member of left end, intermediate is provided with radially in-line and radially in-line of the right side of axial fuel inlet road, a left side, radially oil groove of left end is led in the left radially outlet of in-line, radially oil groove of right-hand member is led in the right radially outlet of in-line, and axial fuel inlet road is communicated with left axial oil groove, middle axial oil groove, right axial oil groove.
The whirlpool end of described intermediate is for to be made as one by thermal shield and middle casing.
The pressure side of described intermediate is for to be made as one by pressure side cover plate and middle casing.
Described pinch roller end is made as bullet shape.
Advantage of the present invention is the number that has reduced pressurized machine part, simplifies the structure, and has shortened rotor length and pressurized machine length, has reduced the cost of pressurized machine.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is floating bearing structural representation;
Fig. 3 is the side view of floating bearing;
Fig. 4 is the partial view of Fig. 3;
Fig. 5 is that Fig. 3 A-A is to view.
Embodiment
As shown in Figure 1-as shown in Figure 4, it comprises volute 8 small sized turbocharger, pressure shell 9, turbine 1 and pinch roller 2, turbine and rotating shaft composition turbine rotor, between turbine 1 and pinch roller 2, be connected by rotating shaft 3 and intermediate 4, described rotating shaft 3 is provided with floating bearing 5, floating bearing 5 is fixed on intermediate 4 by locating stud 7, floating bearing 5 one end prop up the end face of turbine 1, the other end props up the end face of pinch roller 2 by shaft seal 6, the end face of floating bearing 5 is provided with oil groove 5a, plane 5b and oil film wedge face 5c, described oil film wedge face 5c is circumferentially inclined-plane, be radially the inclined-plane of outer rim higher than inner edge, by only having a floating bearing 5 in movement, and floating bearing cannot rotate in rotor rotation process, floating bearing is at the two-layer oil film of inside and outside formation, the end face of floating bearing is as a thrust bearing part, rotor bearing face in the time of High Rotation Speed will be subject to certain axial force, and generation friction.
As shown in Figure 5, floating bearing end face is provided with oil groove, plane and oil film wedge face, generally be provided with eight oil film wedge faces and oil groove, oil film wedge face is fan-shaped, the wedge surface that circumferentially oils is inclined-plane, Ru Tu5 inclined-plane, this inclined-plane a, the footpath of oil film wedge face is upwards made as raised inclined-plane from inside to outside, be oil film wedge face diameter to outer rim higher than inner edge; It is fan-shaped that plane is also, and the wedge surface that circumferentially oils is inclined-plane, and footpath is upwards made as raised inclined-plane from inside to outside, be oil film wedge face diameter to outer rim higher than inner edge; Floating bearing oil film wedge face and plane are all fan-shaped diametric(al) and are vicissitudinous inclined-plane, fan-shaped oil film wedge face oil film loaded area is large, oil film path length, parallel oil film wedge face bearing capacity than prior art improves 60%, so just meet and in core structure, carried using the end face of floating bearing as thrust bearing of the demand of axial force, thereby realized simple, the compactness of core structure, cheapization of cost.
As shown in Figure 5, floating bearing 5 side faces are provided with radially oil groove 5A of left end, left axial oil groove 5C, middle axial oil groove 5E, radially oil groove 5B of right axial oil groove 5D and right-hand member, intermediate is provided with axial fuel inlet road C, a left side is in-line A and radially in-line B of the right side radially, radially oil groove 5A of left end is led in the left radially outlet of in-line A, radially oil groove 5B of right-hand member is led in the right radially outlet of in-line B, axial fuel inlet road C and left axial oil groove 5C, middle axial oil groove 5E, right axial oil groove 5D is communicated with, left end radially oil groove and right-hand member is radially equipped with radially oil inlet hole D in oil groove, can realize radially oil-feed and axial fuel inlet simultaneously, make the inside and outside two-layer oil film of formation on floating bearing inwall and outer circumferential face, reduce oil film vibration, improve the run stability of rotor.
The part at whirlpool end of intermediate 4 is for to be made as one by thermal shield and middle casing, conventionally the whirlpool end of the turbosupercharger of structure is provided with thermal shield, be used for completely cutting off the high temperature from engine exhaust conduction in turbine, overheated to prevent lubricant oil and the floating bearing of middle casing, in the present invention, cancel traditional thermal shield parts, the wall thickness of middle casing whirlpool end has been increased, form thermal shield and middle casing integrated, to reach heat insulation object.Adopt the advantage of this modification to be: to reduce thermal shield parts and shortened the overall length of pressurized machine, be conducive to the miniaturization of pressurized machine; Whirlpool end has reduced part " thermal shield ", has reduced the cost of pressurized machine; The minimizing of part has reduced the accumulated error of assembly, has improved the reliability of pressurized machine, has also simplified assemble flow, has improved working efficiency; Because thermal shield is to adopt stamping process to process, the precision of its thickness is not high, and assembling and positioning face is bad with respect to the perpendicularity of the axis of turbine rotor, makes turbine rotor and volute air outlet coaxality bad, will affect working efficiency and the stability of pressurized machine.And pressurized machine in the present invention has been cancelled traditional thermal shield parts, with locating face and the hole that intermediate assembles turbine rotor of volute assembling be that clamped one time machines, can ensure well coaxality.
The pressure side of described intermediate is for to be made as one by pressure side cover plate and middle casing.Conventionally the pressurized machine of structure is equipped with cover plate in pressure side, and cover plate connects with pressure shell again.For miniature gasoline engine, because its discharge capacity is little, power is little, also corresponding the reducing of power of adaptive pressurized machine, compressor housing, the pressure shell cover plate of its pressurized machine also diminish, therefore the middle casing of pressurized machine and cover plate can be made to integral type, reduce the overall length that gland component has shortened pressurized machine, be conducive to the miniaturization of pressurized machine; Reduce these two kinds of parts of gland and screw, reduced cost; Reduce gland with after screw, simplified assemble flow, reduced the assembly error that personal factor causes.In addition, because cover plate does not need screw fastening, therefore on middle casing, just do not need thread mill drilling, simplified processing technology, lowered processing cost; Optimizing back shroud and intermediate is integral type, greatly improves than the intensity of screw Connecting format before remodeling, and the cover plate causing because of vibration can avoid pressurized machine work time and the inefficacy of toner screw, improve the reliability of pressurized machine work; The locating face connecting with pressure shell is that clamped one time machines with the hole of assembling turbine rotor, before retrofiting with respect to the coaxality of rotor and perpendicularity, improve, avoid gland and middle casing to connect machining error, the assembly error that will inevitably produce, reduced the assembly error of movement.
Wherein, pinch roller end is made as bullet shape, and this sub warhead 10 is as the effect of nut.Conventional gas compressor is made up of three parts: the nut of leading portion, the impeller of middle-end, the shaft seal of rear end.Integrated type gas compressor is that the nut of pressure side in conventional turbocharger, pinch roller and three parts of shaft seal are integrated into a part, thread rotary orientation is contrary with the sense of rotation of gas compressor, ensure the locking that gas compressor can be stable under High Rotation Speed, form bullet-type nut in pinch roller end.The advantage of this structure is to have reduced number of spare parts, has reduced cost; Shaft seal and pinch roller make integral type, have reduced the precision of processing, have indirectly reduced processing cost.In integrated type gas compressor, be the screw thread of pinch roller and the screw-thread fit of rotating shaft location due to what adopt, so do not need pinch roller hole to have too high precision, do not need to process separately shaft seal high-precision part like this yet; Owing to being integrated type pinch roller, can be without the problem such as perpendicularity and the degree of balance of considering that split type parts may occur in the time mutually assembling.In split-type structural, the left side of shaft seal left and right both ends of the surface and pinch roller will coordinate with adjacent part, and therefore requiring its end face is 0.008 with respect to the perpendicularity of axis, and in the situation that ensureing drawing requirement, also exists accumulated error.And in integrated type gas compressor, only need to ensure the perpendicularity of the left side of pinch roller, and according to processing technology, the hole of pinch roller and left side machine in clamped one time, and its perpendicularity can ensure very accurately; Adopt monolithic construction in nut and impeller and shaft seal, reduced the quantity of part, greatly simplified the flow process of assembling, improved efficiency of assembling and the reliability of turbosupercharger, reduced the assembly error certainly existing.In addition, between compressor impeller and turbine shaft, can adopt Spielpassung, and without interference fit, so also simplify the dismounting of impeller.
Claims (5)
1. miniature gasoline engine turbosupercharger, it comprises volute, turbine rotor, intermediate, bearing, locating stud, pinch roller and pressure shell, volute is set on turbine rotor and is connected with intermediate one end, pressure shell is set on pinch roller and is connected with the other end of intermediate, bearing fit positions by locating stud between turbine rotor and intermediate, it is characterized in that: described bearing is floating bearing, floating bearing one end props up the end face of turbine in turbine rotor, the other end props up the end face of pinch roller by shaft seal, the end face of floating bearing is provided with oil groove, plane and oil film wedge face, described oil film wedge face is circumferentially inclined-plane.
2. miniature gasoline engine turbosupercharger according to claim 1, it is characterized in that: described floating bearing side face is provided with radially oil groove, left axial oil groove, middle axial oil groove, right axial oil groove and radially oil groove of right-hand member of left end, intermediate is provided with radially in-line and radially in-line of the right side of axial fuel inlet road, a left side, radially oil groove of left end is led in the left radially outlet of in-line, radially oil groove of right-hand member is led in the right radially outlet of in-line, and axial fuel inlet road is communicated with left axial oil groove, middle axial oil groove, right axial oil groove.
3. miniature gasoline engine turbosupercharger according to claim 1, is characterized in that: the whirlpool end of described intermediate is for to be made as one by thermal shield and middle casing.
4. miniature gasoline engine turbosupercharger according to claim 1, is characterized in that: the pressure side of described intermediate is for to be made as one by pressure side cover plate and middle casing.
5. miniature gasoline engine turbosupercharger according to claim 1, is characterized in that: described pinch roller end is made as bullet shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743386.0A CN103953431B (en) | 2013-12-30 | 2013-12-30 | Small gasoline engine turbosuperchager |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743386.0A CN103953431B (en) | 2013-12-30 | 2013-12-30 | Small gasoline engine turbosuperchager |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953431A true CN103953431A (en) | 2014-07-30 |
| CN103953431B CN103953431B (en) | 2017-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743386.0A Active CN103953431B (en) | 2013-12-30 | 2013-12-30 | Small gasoline engine turbosuperchager |
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| Country | Link |
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| CN (1) | CN103953431B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975889A (en) * | 2015-06-18 | 2015-10-14 | 宁波威孚天力增压技术有限公司 | Turbo-supercharger with semi-floating bearing integrating floating and thrusting functions |
| CN114704376A (en) * | 2022-05-07 | 2022-07-05 | 潍坊科技学院 | High-integration-degree turbocharger without independent bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5169242A (en) * | 1990-11-27 | 1992-12-08 | General Motors Corporation | Turbocharger assembly and stabilizing journal bearing therefor |
| CN201560809U (en) * | 2009-11-20 | 2010-08-25 | 常州环能涡轮动力有限公司 | Turbocharger floating bearing |
| CN202756087U (en) * | 2012-08-28 | 2013-02-27 | 常州市索特动力工程有限公司 | Low-damping variable section 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 |
| CN203756315U (en) * | 2013-12-30 | 2014-08-06 | 常州环能涡轮动力股份有限公司 | Small-sized gasoline engine turbine booster |
-
2013
- 2013-12-30 CN CN201310743386.0A patent/CN103953431B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5169242A (en) * | 1990-11-27 | 1992-12-08 | General Motors Corporation | Turbocharger assembly and stabilizing journal bearing therefor |
| CN201560809U (en) * | 2009-11-20 | 2010-08-25 | 常州环能涡轮动力有限公司 | Turbocharger floating bearing |
| CN202756087U (en) * | 2012-08-28 | 2013-02-27 | 常州市索特动力工程有限公司 | Low-damping variable section 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 |
| CN203756315U (en) * | 2013-12-30 | 2014-08-06 | 常州环能涡轮动力股份有限公司 | Small-sized gasoline engine turbine booster |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975889A (en) * | 2015-06-18 | 2015-10-14 | 宁波威孚天力增压技术有限公司 | Turbo-supercharger with semi-floating bearing integrating floating and thrusting functions |
| CN104975889B (en) * | 2015-06-18 | 2017-07-25 | 宁波威孚天力增压技术有限公司 | Turbocharger with the semifloating bearing for integrating floating and thrust function |
| CN114704376A (en) * | 2022-05-07 | 2022-07-05 | 潍坊科技学院 | High-integration-degree turbocharger without independent bearing |
| CN114704376B (en) * | 2022-05-07 | 2023-06-09 | 潍坊科技学院 | High-integration turbocharger without independent bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103953431B (en) | 2017-01-11 |
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