CN203756725U - Novel thrust bearing of turbosupercharger of gasoline engine - Google Patents
Novel thrust bearing of turbosupercharger of gasoline engine Download PDFInfo
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- CN203756725U CN203756725U CN201320881257.3U CN201320881257U CN203756725U CN 203756725 U CN203756725 U CN 203756725U CN 201320881257 U CN201320881257 U CN 201320881257U CN 203756725 U CN203756725 U CN 203756725U
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Abstract
The utility model belongs to the field of turbosuperchargers, and particularly relates to a novel thrust bearing of a turbosupercharger of a gasoline engine. The novel thrust bearing comprises a circular thrust bearing body with an opening, wherein the center of the thrust bearing body is provided with an installation hole, the installation hole is sequentially provided with an oil wedge surface, an oil leakage groove and an oil groove from outside to inside, the oil wedge surface is provided with four fan-shaped structures, each fan-shaped structure comprises a fan-shaped oblique surface and a fan-shaped plane, which are adjacent to each other, the oblique surface of each fan-shaped structure is connected to the plane of the last fan-shaped structure, each fan-shaped structure is provided with an oil storage groove, the oil storage grooves are formed in the junctions of the oblique surfaces and the planes, the oil leakage groove is formed in the periphery of the oil wedge surface, the oil groove is of a semicircular structure, is circumferentially formed in the upper half part of the oil leakage groove and is provided with three oil channels which are communicated with the three oil storage grooves. The novel thrust bearing has the advantages that the bearing area of an oil membrane of the oil wedge surface is large, the path of the oil membrane is long, and compared with that of a parallel oil wedge surface in the prior art, the carrying capacity of the oil wedge surface is improved by more than 60 percent.
Description
Technical field
The utility model belongs to field of turbochargers, specifically the novel thrust bearing of a kind of turbocharger for gasoline engine.
Background technique
In recent years, municipal pollution and noise nuisance are more and more serious, and various countries' environmental legislation is controlled more and more stricter, have promoted the development of the petrol engine turbocharging technologies such as minibus and passenger car.Petrol engine air admission supercharging technology is the developing history of existing over half a century almost, but a very long road has but been experienced in its development.Main cause is exactly that diesel engine and petrol engine work characteristics separately exist very big difference, particularly on the formation of mixed gas and combustion manner, boost performance is had to great impact, makes petrol engine air admission supercharging more a lot of than diesel engine supercharging difficulty technically.
For petrol engine, after supercharging, improved the temperature and pressure of mixed gas compression and combustion gas in cylinder, increased the heat load of firing chamber Heating Components, be easy to produce pinking, thereby the mechanical property, greasy property etc. of motor are all affected.Petrol engine delivery temperature is higher than diesel engine in addition, and the rotating ratio diesel engine of petrol engine is high, and air mass flow changes larger.These are all had higher requirement to the material of turbocharger for gasoline engine and parts thereof, design, manufacture and processing.
In vehicle turbocharger design, the design of thrust bearing is extremely important, and it not only directly affects reliability and the working life of supercharger structure, and thrust bearing accounts for the major part of bearing power loss, also can affect the efficiency of turbosupercharger.In all faults of pressurized machine, the fault causing due to bearing (thrust bearing and floating bearing) accounts for 40% left and right according to statistics.And in bearing fault, the rate of fault of thrust bearing is again higher than floating bearing.Once thrust bearing damages, and directly causes impeller and housing grazing, rotor is stuck, and pressurized machine quits work.Therefore,, in order to improve the reliability of turbocharger for gasoline engine of new generation, development and development of new thrust bearing are imperative.
Model utility content
The utility model, for the problem existing in above-mentioned technology, proposes the novel thrust bearing of a kind of turbocharger for gasoline engine.
The utility model provides following technological scheme:
The novel thrust bearing of turbocharger for gasoline engine, it comprises that a circular place is provided with the thrust bearing body of opening, thrust bearing body center is provided with mounting hole, by mounting hole, be outwards provided with successively oil film wedge face, drain pan and oil groove, described oil film wedge face is provided with four sector structures, each sector structure comprises adjacent fan-shaped inclined-plane and fan-shaped plane, the plane of the inclined-plane of each sector structure and a upper sector structure is joined, each sector structure is provided with an oil storage tank, oil storage tank is located at inclined-plane and plane adjoiner, drain pan is looped around oil film wedge face surrounding, oil groove is semicircular structure, oil groove is looped around upper half part of drain pan, oil groove is provided with three oil ducts, and three oil ducts are communicated with three oil storage tanks respectively.
Described oil duct with oil storage tank over against being connected.
The utility model has the advantages that oil film wedge face oil film loaded area is large, oil film path length, has improved profit more than 60% than the parallel oil film wedge face bearing capacity of original technology.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A partial sectional view in Fig. 1;
The B-B of Fig. 3 Fig. 1 is to sectional view.
Embodiment
As Fig. 1, Fig. 2, shown in Fig. 3, the novel thrust bearing of turbocharger for gasoline engine, C is to the sense of rotation of the axle matching for the utility model, it comprises that a circular place is provided with the thrust bearing body 1 of opening, thrust bearing body 1 center is provided with mounting hole, by mounting hole, be outwards provided with successively oil film wedge face 2, drain pan 3 and oil groove 4, described oil film wedge face 2 is provided with four sector structures, each sector structure comprises adjacent fan-shaped inclined-plane 2a and fan-shaped plane 2b, the plane of the inclined-plane of each sector structure and a upper sector structure is joined, each sector structure is provided with an oil storage tank 5, oil storage tank 5 is located on the connecting line of inclined-plane and plane adjoiner, drain pan 3 is looped around oil film wedge face 2 surroundings, oil groove 4 is semicircular structure, oil groove 4 is looped around upper half part of drain pan 3, oil groove 4 is provided with 6, three oil ducts 6 of three oil ducts and is just being docked and connected with three oil storage tanks 5 respectively.
In sector structure, inclined-plane 2a starts to be settled down to the bottom b near oil storage tank 5 one end from the high-end a in the one end away from oil storage tank 5, therefore forms inclined-plane 2a
Thrust bearing body 1 body is provided with screw hole and surrounding is also provided with pin hole 7.
This thrust bearing setting is arranged on the gas compressor end near pressurized machine, wherein, has a side of oil groove to install to intermediate, and the oil film wedge face distributing on this face mainly bears the axial force of pointing to gas compressor end, i.e. forward thrust.The oil film wedge face of opposite side mainly bears the axial force of pointing to turbine end, i.e. deboost.In the both sides of thrust bearing, be separately installed with shaft seal and shaft seal pad, they can be delivered to epitrochanterian axial force on thrust plate by oil film wedge face.
The utility model adopts the structural design of 360 degree, compare 270 original degree, intensity and reliability are greatly improved due to the structural design that is 360 degree, and the shaft seal matching need to make twinset design into and match with it, and material adopts high strength anti-abrasion manganese brass, material composition is Cu(57～59%), Mn(1.5～3.0%), Si(0.3～1.3%), Pb(0.2～1.0%), Al(1.3～2.3%), Zn surplus.Adopt the material machine shaping of taking over the baton of CNC numerical-control direct, the hardness of finished product can arrive about HBS180, has higher intensity and wear resistance; The structural design of oil film wedge face structure has adopted the structure of 4 tiltedly-planes.Inclined-plane all becomes fan-shaped with plane.This inclined-plane has spatial structure, at circumference and diametric(al), all has varied in thickness.Circumferencial direction, along the sense of rotation of axle, inclined-plane raises gradually, and highest point and plane are contour.This structure can improve the resistance of machine oil when circumferential movement, thereby improves the pressure of oil film, promotes the bearing capacity of bearing; Diametric(al), inclined-plane raises from inside to outside gradually, effectively solves high speed thrust bearing because the oil film wedge face outer edge vent flow that centrifugal force causes increases, the problem that causes bearing capacity to reduce.And this oil film wedge face oil film loaded area is large, oil film path length, has improved profit more than 60% than the parallel oil film wedge face bearing capacity of original technology.
It is oil film wedge face fuel feeding that this bearing adopts three oil ducts, four oil storage tanks, guarantees that fuel feeding is sufficient.Article three, oil duct distributing position is as shown below, by oil groove, leads to center hole.Article four, oil storage tank is distributed in the jointing place of oil film wedge face inclined-plane and plane, wherein three dead aheads that lay respectively at three oil ducts.Oil-feed tank is an arc groove that is distributed in drain pan outside, and its central angle is about 210 °.
The lubricant oil of thrust bearing passes through successively: oil inlet hole → main oil gallery → oil groove → oil duct → endoporus → oil storage tank → oil film wedge face → drain pan.Shaft seal and shaft seal pad are arranged on respectively the both sides of thrust bearing, form two lubricant reservoirs respectively with bearing.In order further to increase the bearing capacity of thrust bearing, on four oil film wedge faces, establish respectively special oil storage tank, by endoporus, outwards supplied with, form half hydrostatic bearing.
Thrust bearing accurately locates with intermediate by 2 pins.Meanwhile, by 4 screws, be fixed on intermediate.Shaft seal and shaft seal pad are arranged on respectively the two ends of bearing.The thickness of thrust bearing should be less 6～8 than the gap between shaft seal twinset, to guarantee can to form the oil slick thickness of monolateral 3～4 between thrust bearing and shaft seal twinset.Shaft seal left end face contacts with impeller, and shaft seal pad its right end face contacts with the step of turbine shaft.At impeller head, with a nut, whole rotor is locked.
Claims (2)
1. the novel thrust bearing of turbocharger for gasoline engine, it comprises that a circular place is provided with the thrust bearing body of opening, thrust bearing body center is provided with mounting hole, by mounting hole, be outwards provided with successively oil film wedge face, drain pan and oil groove, it is characterized in that: described oil film wedge face is provided with four sector structures, each sector structure comprises adjacent fan-shaped inclined-plane and fan-shaped plane, the plane of the inclined-plane of each sector structure and a upper sector structure is joined, each sector structure is provided with an oil storage tank, oil storage tank is located at inclined-plane and plane adjoiner, drain pan is looped around oil film wedge face surrounding, oil groove is semicircular structure, oil groove is looped around upper half part of drain pan, oil groove is provided with three oil ducts, and three oil ducts are communicated with three oil storage tanks respectively.
2. the novel thrust bearing of turbocharger for gasoline engine according to claim 1, is characterized in that: described oil duct with oil storage tank over against being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881257.3U CN203756725U (en) | 2013-12-30 | 2013-12-30 | Novel thrust bearing of turbosupercharger of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881257.3U CN203756725U (en) | 2013-12-30 | 2013-12-30 | Novel thrust bearing of turbosupercharger of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756725U true CN203756725U (en) | 2014-08-06 |
Family
ID=51252006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320881257.3U Expired - Fee Related CN203756725U (en) | 2013-12-30 | 2013-12-30 | Novel thrust bearing of turbosupercharger of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089330A (en) * | 2015-04-30 | 2016-11-09 | 通用汽车环球科技运作有限责任公司 | 2 grades of slope thrust bearing base designs under fog lubrication situation |
-
2013
- 2013-12-30 CN CN201320881257.3U patent/CN203756725U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089330A (en) * | 2015-04-30 | 2016-11-09 | 通用汽车环球科技运作有限责任公司 | 2 grades of slope thrust bearing base designs under fog lubrication situation |
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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 |
Granted publication date: 20140806 Termination date: 20171230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |