CN102852630A - Suspension supporting structure of low damping oil of turbocharger - Google Patents
Suspension supporting structure of low damping oil of turbocharger Download PDFInfo
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- CN102852630A CN102852630A CN 201210310323 CN201210310323A CN102852630A CN 102852630 A CN102852630 A CN 102852630A CN 201210310323 CN201210310323 CN 201210310323 CN 201210310323 A CN201210310323 A CN 201210310323A CN 102852630 A CN102852630 A CN 102852630A
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- oil
- turbine shaft
- oil film
- sliding bearing
- film groove
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- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a suspension supporting structure of a low damping oil of a turbocharger. The suspension supporting structure comprises a bearing body, oil inlet holes, an outer circle surface and a matched inner hole surface, wherein the oil inlet holes are uniformly arranged on the outer circle surface along the circumferential direction, the matched inner hole is provided with oil membrane grooves, the positions of the oil membrane grooves correspond to that of the oil inlet holes, the oil membrane grooves are communicated with the oil inlet holes, the cross sections of the oil membrane grooves are engaged, and the depths of the oil membrane grooves are gradually reduced along a rotation direction of the turbine shaft. High-pressure lubricating oil enters into the oil membrane grooves from the oil inlet holes, and an oil membrane layer for supporting the turbine shaft is quickly formed between a sliding bearing and the turbine shaft conveniently, so that the turbine shaft is automatically located in an inner hole of the sliding bearing, during operation, non-contact support is realized between the turbine shaft and the sliding bearing, the operating resistance of the turbocharger is reduced; a special structure of the oil membrane grooves is beneficial for realizing auxiliary rotation under the action of the pressure lubricating oil between the turbine shaft and the sliding bearing, the rotating resistance of the turbine shaft is further reduced, and the low damping operation of the turbocharger is realized.
Description
[technical field]
The present invention relates to a kind of gas-discharging type turbosupercharger, relate in particular in the gas-discharging type turbosupercharger for supporting turbine shaft rotor part supporting structure.
[background technique]
The gas-discharging type turbosupercharger is to utilize the high-pressure high-temperature waste gas of diesel engine discharge as power source, the high temperature pressure waste gas that diesel engine is discharged is introduced the turbo machine in the turbosupercharger, the turbine that utilizes the contained energy of waste gas to promote in the turbo machine rotates, thereby drive the turbine rotation, driving simultaneously coaxial with it compressor impeller rotates, by gas compressor air amount is carried out the boost gas handling system of rear delivering diesel of contractive pressure, in cylinder of diesel engine, be filled with high-density air, can improve each diesel injection amount, both can improve the output power of same model diesel engine, also can improve the remarkable Economy of improving diesel engine, impel diesel oil fully to burn, improve the thermal efficiency of diesel engine, Reduce fuel consuming rate reduces noxious gas emission, reduce noise, therefore, diesel engine for automobile and marine diesel engine all need to mate turbosupercharger, and continuous-pressure breathing is the developing direction of diesel engine.
Using the most general turbosupercharger at present is the gas-discharging type turbosupercharger, it comprises turbine case, turbine, turbine shaft, intermediate, sliding bearing, supercharging impeller and pressure shell, turbine and supercharging impeller are installed in respectively the two ends of turbine shaft, turbine is arranged in turbine case, supercharging impeller is arranged in pressure shell, turbine shaft is installed on the intermediate by two sliding bearings, turbine case and pressure shell are fixedly mounted on respectively the both sides of intermediate hermetically, and two sliding bearings are lubricated by lubricant oil with pressure and cool off.Sliding bearing circumferentially be provided with equably oil inlet hole, be convenient to the surface of contact that lubricant oil can enter turbine shaft and sliding bearing, satisfy sufficient lubrication and cooling requirement.
Yet the running resistance of existing gas-discharging type turbosupercharger is also larger, directly has influence on the further raising of turbocharger supercharged effect, and through claimant long-term practice and analysis, the running resistance of gas-discharging type turbosupercharger mainly comes from following 2 points:
1. the rotary seal place friction between turbine shaft and intermediate two ends;
2. rotate friction between turbine shaft and two sliding bearings;
Wherein, rotate dyanainic friction between the sealing configuration at turbine shaft and intermediate two ends inevitable, otherwise just can't seal, cooperate between sliding bearing and the turbine shaft and rotate friction further improved space is then arranged, this cooperating structure is improved and optimizes is the effective way that reduces gas-discharging type turbosupercharger resistance to motion.For the running resistance that overcomes existing gas-discharging type turbosupercharger is larger, further improve turbocharger supercharged effect, the claimant develops a kind of low resistance Turbochargers in Diesel Engines.Wherein the oil film suspension bearing helps that to turn sliding bearing be core part.
[summary of the invention]
The purpose of this invention is to provide a kind of turbosupercharger low resistance oil film suspension bearing structure.
The technological scheme that the present invention takes is:
A kind of turbosupercharger low resistance oil film suspension bearing structure, comprise turbine, turbine shaft, sliding bearing, intermediate, diffusion plate and supercharging impeller, turbine and supercharging impeller are installed in respectively the two ends of turbine shaft, turbine shaft is installed on the intermediate by two sliding bearings, left side and the intermediate of diffusion plate link into an integrated entity hermetically, lubricating oil path on the intermediate and two sliding bearings interlink, described sliding bearing comprises bearing body, oil inlet hole, the oil film groove, outer round surface and cooperation endoporus, oil inlet hole is along circumferentially being arranged on equably on the outer round surface of sliding bearing, cooperation endoporus at sliding bearing is provided with the oil film groove, the setting position of oil film groove is corresponding with oil inlet hole, and oil film groove and oil inlet hole interlink, the shape of cross section of described oil film groove is contract piece shape, and the degree of depth of oil film groove reduces gradually along the sense of rotation of turbine shaft.
Further, the quantity of oil inlet hole and oil film groove is 3 ~ 6 on same circumference.
Further, the end face of described oil film groove is the plane.
Further, the end face of described oil film groove is cambered surface.
Owing to having offered oil inlet hole at the outer round surface of sliding bearing, cooperation endoporus at sliding bearing offers the oil film groove, and oil inlet hole and oil film groove are on the same circumference, both lead to mutually, when the oil inlet hole of extreme pressure lubricant from sliding bearing of booster intermediate body enters the oil film groove, can between sliding bearing and turbine shaft fitting surface, form fast the high pressure oil rete of supporting turbine shaft, make turbine shaft automatically be in the center of sliding bearing endoporus, when operation, realize the floating outstanding supporting structure form of contactless high pressure oil film between turbine shaft and the sliding bearing, reduced to greatest extent the running resistance of turbosupercharger; The shape of cross section of oil film groove is designed to be conducive to realize auxiliary rotary between turbine shaft and the sliding bearing under the pressure lubrication oil effect along the grading structure that the turbine shaft sense of rotation reduces gradually, further reduce the rotational resistance of turbine shaft, so that the rotor part of turbosupercharger is realized low friction, low resistance running, improved the pressurized effect of turbosupercharger.
[description of drawings]
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of sliding bearing;
Fig. 3 is the plan view of Fig. 2;
Fig. 4 is the configuration diagram that the present invention uses in the gas-discharging type turbosupercharger;
Among the figure, the 1-turbine case; The 2-turbine; The 3-turbine shaft; The 4-sliding bearing; The 5-intermediate; The 6-diffusion plate; The 7-supercharging impeller; The 8-pressure shell; The 9-heat shield; The 41-bearing body; The 42-oil inlet hole; 43-oil film groove; The 44-outer round surface; 45-cooperates endoporus; The 46-end face; The 51-lubricating oil path.
[embodiment]
Below in conjunction with description of drawings the specific embodiment of the present invention:
Embodiment 1:
A kind of turbosupercharger low resistance oil film suspension bearing structure, as shown in Figure 1, it comprises turbine 2, turbine shaft 3, sliding bearing 4, intermediate 5, diffusion plate 6 and supercharging impeller 7, turbine 2 and supercharging impeller 7 are installed in respectively the two ends of turbine shaft 3, turbine shaft 3 is installed on the intermediate 5 by two sliding bearings 4, the left side of diffusion plate 6 and intermediate 5 link into an integrated entity hermetically, lubricating oil path 51 on the intermediate 5 and two sliding bearings 4 interlink, described sliding bearing 4 comprises bearing body 41, oil inlet hole 42, oil film groove 43, outer round surface 44 and cooperation endoporus 45, oil inlet hole 42 is along circumferentially being arranged on equably on the outer round surface 44 of sliding bearing, cooperation endoporus 45 at sliding bearing 4 is provided with oil film groove 43, the setting position of oil film groove 43 is corresponding with oil inlet hole 42, and oil film groove 43 interlinks with oil inlet hole 42, the shape of cross section of described oil film groove 43 is contract piece shape, and the degree of depth of oil film groove 43 reduces gradually along the sense of rotation of turbine shaft 3.
Fig. 4 is equipped with a kind of low resistance Turbochargers in Diesel Engines of the present invention, it comprises turbine case 1, turbine 2, turbine shaft 3, sliding bearing 4, intermediate 5, diffusion plate 6, supercharging impeller 7 and pressure shell 8, turbine case 1 is fixedly mounted on the left side of intermediate 5 of the present invention, heat shield 9 is between the left side of turbine case 1 and intermediate 5, turbine 2 is arranged in turbine case 1, the right side of pressure shell 8 and diffusion plate 6 is tightly connected and is integral, supercharging impeller 7 is arranged in pressure shell 8, and the lubricating oil path 51 on the intermediate 5 interlinks with high pressure oil pump.
Embodiment 2: be between different from embodiment 1: be provided with two groups of oil inlet holes 42 and oil film groove 43 along axle on sliding bearing 4.
Claims (4)
1. turbosupercharger low resistance oil film suspension bearing structure, it is characterized in that: comprise turbine (2), turbine shaft (3), sliding bearing (4), intermediate (5), diffusion plate (6) and supercharging impeller (7), turbine (2) and supercharging impeller (7) are installed in respectively the two ends of turbine shaft (3), turbine shaft (3) is installed on the intermediate (5) by two sliding bearings (4), the left side of diffusion plate (6) and intermediate (5) link into an integrated entity hermetically, lubricating oil path (51) on the intermediate (5) interlinks with two sliding bearings (4), described sliding bearing (4) comprises bearing body (41), oil inlet hole (42), oil film groove (43), outer round surface (44) and cooperation endoporus (45), oil inlet hole (42) is along circumferentially being arranged on equably on the outer round surface (44) of sliding bearing, cooperation endoporus (45) at sliding bearing (4) is provided with oil film groove (43), the setting position of oil film groove (43) is corresponding with oil inlet hole (42), and oil film groove (43) interlinks with oil inlet hole (42), the shape of cross section of described oil film groove (43) is contract piece shape, and the degree of depth of oil film groove (43) reduces gradually along the sense of rotation of turbine shaft (3).
2. described turbosupercharger low resistance oil film suspension bearing structure according to claim 1, it is characterized in that: the quantity of oil inlet hole on same circumference (42) and oil film groove (43) is 3 ~ 6.
3. described turbosupercharger low resistance oil film suspension bearing structure according to claim 1, it is characterized in that: the end face (46) of described oil film groove (43) is the plane.
4. turbosupercharger low resistance oil film suspension bearing structure according to claim 1, it is characterized in that: the end face (46) of described oil film groove (43) is cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210310323 CN102852630A (en) | 2012-08-28 | 2012-08-28 | Suspension supporting structure of low damping oil of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210310323 CN102852630A (en) | 2012-08-28 | 2012-08-28 | Suspension supporting structure of low damping oil of turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102852630A true CN102852630A (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210310323 Pending CN102852630A (en) | 2012-08-28 | 2012-08-28 | Suspension supporting structure of low damping oil of turbocharger |
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| Country | Link |
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| CN (1) | CN102852630A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291753A (en) * | 2013-05-17 | 2013-09-11 | 潍坊市明冠节能科技有限公司 | Floating bearing and turbocharger of internal combustion engine |
| CN110696918A (en) * | 2019-09-05 | 2020-01-17 | 浙江拓为汽车部件有限公司 | Preparation method of main beam capable of increasing overall NVH (noise, vibration and harshness) capacity of vehicle |
-
2012
- 2012-08-28 CN CN 201210310323 patent/CN102852630A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291753A (en) * | 2013-05-17 | 2013-09-11 | 潍坊市明冠节能科技有限公司 | Floating bearing and turbocharger of internal combustion engine |
| CN103291753B (en) * | 2013-05-17 | 2016-03-23 | 潍坊市明冠节能科技有限公司 | A kind of floating bearing and internal combustion engine turbocharger |
| CN110696918A (en) * | 2019-09-05 | 2020-01-17 | 浙江拓为汽车部件有限公司 | Preparation method of main beam capable of increasing overall NVH (noise, vibration and harshness) capacity of vehicle |
| CN110696918B (en) * | 2019-09-05 | 2024-04-30 | 浙江拓为汽车部件有限公司 | Preparation method of main beam for increasing overall NVH (noise, vibration and harshness) capability of vehicle |
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Application publication date: 20130102 |