CN102852627A - Low-damping variable-area turbocharger - Google Patents
Low-damping variable-area turbocharger Download PDFInfo
- Publication number
- CN102852627A CN102852627A CN2012103108362A CN201210310836A CN102852627A CN 102852627 A CN102852627 A CN 102852627A CN 2012103108362 A CN2012103108362 A CN 2012103108362A CN 201210310836 A CN201210310836 A CN 201210310836A CN 102852627 A CN102852627 A CN 102852627A
- Authority
- CN
- China
- Prior art keywords
- oil film
- oil
- sliding bearing
- pressure
- turbine
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a low-damping variable-area turbocharger. Oil inlet holes are uniformly arranged on the excircle surface of a sliding bearing along the peripheral direction; a pressure oil cavity is arranged at the middle part of a matching inner hole; oil film tanks are uniformly arranged in the matching inner hole along the peripheral direction; the pressure oil cavity is communicated with the oil film tank; a pressure maintaining belt is arranged between the oil film tank and a bearing end surface; and an oil discharge tank is arranged on the bearing end surface. Since oil film tanks of which the cross-section shape is a wedge block shape are arranged on the inner hole surface of the sliding bearing along the peripheral direction, when high-pressure lubricating oil enters the pressure oil cavity and the oil film tanks, the oil film tanks of which the cross-section shape is a wedge block shape can quickly form a pressure oil film layer supporting a turbine shaft between the sliding bearing and the turbine shaft and also can enable the turbine shaft to automatically stay at the center of the inner hole of the sliding bearing to support the pressure oil film, thereby reducing the operation resistance against the turbocharger to the greatest degree; and meanwhile, the wedge block-shaped oil film tanks are favorable for the turbine shaft to realize auxiliary rotation under the effect of the pressure lubricating oil and realize the low-damping auxiliary operation of the turbocharger.
Description
[technical field]
The present invention relates to a kind of turbosupercharger, relate in particular to the gas-discharging type variable-area turbocharger.
[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-pressure high-temperature 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 driving coaxial with it compressor impeller rotates, to suck the gas handling system that is transported to diesel engine after empty contractive pressure boosts by gas compressor, 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 significantly improve the Economy of diesel engine, impel diesel oil fully to burn, improve the thermal efficiency of diesel engine, Reduce fuel consuming rate reduces noxious gas emission, reduces noise.
Along with power of IC engine density improves constantly, the mean effective pressure of internal-combustion engine and the pressure ratio of turbosupercharger are more and more higher, and matching problem is more and more serious between internal-combustion engine and the turbosupercharger.At present, common turbosupercharger all is that the rated power by internal-combustion engine mates, when internal-combustion engine is in low working condition running state, because rotating speed is low, the exhaust pressure of internal-combustion engine is low, it is also low to cause turbosupercharger to produce pressurized air density, the inlet air charge number meeting fast reducing of internal-combustion engine, cause deficiency of air, so that the fuel in the cylinder of internal-combustion engine can not fully burn, not only fuel consumption rate is high, and can produce over-emitting black exhaust, excessive discharge temperature, the defective such as noxious gas emission exceeds standard, and low speed torque is little.Under different working conditions, can both satisfy full combustion of fuel in order to solve internal-combustion engine, must make the exhaust gas intake port cross section of conventional turbocharger can timely adjustment, under this theoretical direction, produce the turbosupercharger of variable cross section.
General variable-area turbocharger all comprises turbine case 1 at present, turbine 2, airway cross-section controlling device 3, volute connecting plate 4, intermediate 5, turbine shaft 6, sliding bearing 7, pressure shell 8 and supercharging impeller 9, turbine 2 and supercharging impeller 9 are installed in respectively the two ends of turbine shaft 6, turbine 2 is arranged in turbine case 1, supercharging impeller 9 is arranged in pressure shell 8, airway cross-section controlling device 3 is arranged in turbine case 1 and the volute connecting plate 4 formed air flues, turbine shaft 6 is installed on the intermediate 5 by sliding bearing 7, volute connecting plate 4 and pressure shell 8 are fixedly mounted on respectively the both sides of intermediate 5 hermetically, and sliding bearing 7 is lubricated by the lubricant oil with pressure in the lubrication system and cools off.Lubricant oil also plays great role to the cooling of whole turbosupercharger simultaneously.
The running resistance of existing gas-discharging type turbosupercharger is larger, have influence on the further raising of turbocharger supercharged effect, through claimant long-term practice and analysis, the running resistance of gas-discharging type turbosupercharger mainly comes from friction between rotary seal place friction between turbine shaft and intermediate two ends and turbine shaft and the sliding bearing; Wherein, it is inevitable to rotate friction between the sealing configuration at turbine shaft and intermediate two ends, otherwise just can't seal, cooperate friction that further improved space is then arranged between sliding bearing and the turbine shaft, this cooperating structure is improved and optimizes is the effective way that reduces gas-discharging type turbosupercharger resistance to motion.
[summary of the invention]
The purpose of this invention is to provide a kind of low resistance variable-area turbocharger.
The technological scheme that the present invention takes is:
A kind of low resistance variable-area turbocharger, comprise turbine case, turbine, the airway cross-section controlling device, the volute connecting plate, intermediate, turbine shaft, sliding bearing, pressure shell and supercharging impeller, 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, the airway cross-section controlling device is arranged in turbine case and the formed air flue of volute connecting plate, turbine shaft is installed on the intermediate by sliding bearing, volute connecting plate and pressure shell are fixedly mounted on respectively the both sides of intermediate hermetically, sliding bearing and lubrication system interlink, it is characterized in that: the edge circumferentially is provided with oil inlet hole equably on the outer round surface of described sliding bearing, cooperate the middle part of endoporus to be provided with pressure oil cavity at sliding bearing, the edge circumferentially evenly is provided with the oil film groove in cooperating endoporus, pressure oil cavity communicates with the oil film groove, is provided with the pressurize band between oil film groove and bearing face.
Further, the edge circumferentially is provided with 3 ~ 6 oil film grooves equably on the cooperation bore area of sliding bearing.
Further, 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 turbine shaft sense of rotation.
Further, the end face of described oil film groove is the plane.
Further, the end face of described oil film groove is cambered surface.
Further, be provided with oil unloading trough at bearing face.
Because the cooperation endoporus edge at sliding bearing circumferentially offers the oil film groove that shape of cross section is contract piece shape, and oil inlet hole communicates with pressure oil cavity, and pressure oil cavity interlinks with the oil film groove, enter the oil leab of intermediate when extreme pressure lubricant after, after oil inlet hole from the sliding bearing enters pressure oil cavity, just be pressed into synchronously in the oil film groove, shape of cross section is the oil film groove of contract piece shape can form the supporting turbine shaft fast between sliding bearing and turbine shaft pressure oil rete, can make again turbine shaft automatically be in the endoporus center of sliding bearing, when operation, realize contactless supporting between turbine shaft and the sliding bearing, reduced to greatest extent the running resistance of turbosupercharger; Simultaneously the shape of cross section of oil film groove is designed to the structure that reduces gradually along the turbine shaft sense of rotation, be conducive under the pressure lubrication oil effect, realize auxiliary rotary between turbine shaft and the sliding bearing, further reduce the rotational resistance of turbine shaft, so that turbosupercharger realizes the low resistance operation.
[description of drawings]
Fig. 1 is the configuration diagram of existing variable section turbocharger;
Fig. 2 is the structural representation of sliding bearing among the present invention;
Fig. 3 is A-A sectional view among Fig. 2;
Fig. 4 is B-B sectional view among Fig. 2;
Fig. 5 is that the C of Fig. 2 is to view.
Among the figure, the 1-turbine case; The 2-turbine; 3-airway cross-section controlling device; 4-volute connecting plate; The 5-intermediate; The 6-turbine shaft; The 7-sliding bearing; The 8-pressure shell; The 9-supercharging impeller; The 71-outer round surface; The 72-oil inlet hole; 73-cooperates endoporus; The 74-pressure oil cavity; 75-oil film groove; The 76-bearing face; 77-pressurize band; The 78-oil unloading trough.
[embodiment]
Below in conjunction with description of drawings the specific embodiment of the present invention:
A kind of low resistance variable-area turbocharger, as shown in Figure 1, comprise turbine case 1, turbine 2, airway cross-section controlling device 3, volute connecting plate 4, intermediate 5, turbine shaft 6, sliding bearing 7, pressure shell 8 and supercharging impeller 9, turbine 2 and supercharging impeller 9 are installed in respectively the two ends of turbine shaft 6, turbine 2 is arranged in turbine case 1, supercharging impeller 9 is arranged in pressure shell 8, airway cross-section controlling device 3 is arranged in turbine case 1 and the volute connecting plate 4 formed air flues, turbine shaft 6 is installed on the intermediate 5 by sliding bearing 7, volute connecting plate 4 and pressure shell 8 are fixedly mounted on respectively the both sides of intermediate 5 hermetically, sliding bearing 7 interlinks with lubrication system, the edge circumferentially is provided with 4 oil inlet holes 72 equably on the outer round surface 71 of sliding bearing 7, middle part at the cooperation endoporus 73 of sliding bearing 7 is provided with pressure oil cavity 74, the edge circumferentially evenly is provided with 4 oil film grooves 75 in cooperating endoporus 73, every pressure oil cavity 74 all communicates with oil film groove 75, between oil film groove 75 and bearing face 76, be provided with pressurize band 77, the shape of cross section of described oil film groove 75 is contract piece shape, the degree of depth of oil film groove 75 reduces gradually along turbine shaft 6 sense of rotation, the end face of described oil film groove 75 is plane or cambered surface, be provided with 4 oil unloading troughs 78 at bearing face 76, such as Fig. 2 ~ shown in Figure 5.
Claims (6)
1. low resistance variable-area turbocharger, comprise turbine case (1), turbine (2), airway cross-section controlling device (3), volute connecting plate (4), intermediate (5), turbine shaft (6), sliding bearing (7), pressure shell (8) and supercharging impeller (9), turbine (2) and supercharging impeller (9) are installed in respectively the two ends of turbine shaft (6), turbine (2) is arranged in turbine case (1), supercharging impeller (9) is arranged in pressure shell (8), airway cross-section controlling device (3) is arranged in turbine case (1) and the formed air flue of volute connecting plate (4), turbine shaft (6) is installed on the intermediate (5) by sliding bearing (7), volute connecting plate (4) and pressure shell (8) are fixedly mounted on respectively the both sides of intermediate (5) hermetically, sliding bearing (7) interlinks with lubrication system, it is characterized in that: the outer round surface (71) of described sliding bearing (7) is upper along circumferentially being provided with equably oil inlet hole (72), cooperate the middle part of endoporus (73) to be provided with pressure oil cavity (74) at sliding bearing (7), the edge circumferentially evenly is provided with oil film groove (75) in cooperating endoporus (73), pressure oil cavity (74) communicates with oil film groove (75), is provided with pressurize band (77) between oil film groove (75) and bearing face (76).
2. described low resistance variable-area turbocharger according to claim 1 is characterized in that: on cooperation endoporus (73) surface of sliding bearing (7) along circumferentially being provided with equably 3 ~ 6 oil film grooves (75).
3. described low resistance variable-area turbocharger according to claim 1 and 2, it is characterized in that: the shape of cross section of described oil film groove (75) is contract piece shape, the degree of depth of oil film groove (75) reduces gradually along turbine shaft (6) sense of rotation.
4. described low resistance variable-area turbocharger according to claim 3, it is characterized in that: the end face of described oil film groove (75) is the plane.
5. described low resistance variable-area turbocharger according to claim 3, it is characterized in that: the end face of described oil film groove (75) is cambered surface.
6. described low resistance variable-area turbocharger according to claim 1 is characterized in that: be provided with oil unloading trough (78) at bearing face (76).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103108362A CN102852627A (en) | 2012-08-28 | 2012-08-28 | Low-damping variable-area turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103108362A CN102852627A (en) | 2012-08-28 | 2012-08-28 | Low-damping variable-area turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102852627A true CN102852627A (en) | 2013-01-02 |
Family
ID=47399539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103108362A Pending CN102852627A (en) | 2012-08-28 | 2012-08-28 | Low-damping variable-area turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102852627A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106536892A (en) * | 2014-09-18 | 2017-03-22 | 欧德克斯有限公司 | Bearing mechanism for turbocharger |
-
2012
- 2012-08-28 CN CN2012103108362A patent/CN102852627A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106536892A (en) * | 2014-09-18 | 2017-03-22 | 欧德克斯有限公司 | Bearing mechanism for turbocharger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102900479B (en) | Variable nozzle turbocharger regulating mechanism integrated on turbine shell | |
| CN101131115A (en) | Water-cooling middle case turbocharging mechanism | |
| CN101509399B (en) | Split axial carrying device of turbo-charger | |
| CN202417693U (en) | Turbocharger | |
| CN1861987A (en) | Pressurizer of miniturbine with mixed flow turbine and water cooled bearing body | |
| CN201650444U (en) | Turbocharger | |
| CN202756087U (en) | Low-damping variable section turbocharger | |
| CN102562263A (en) | Turbocharger | |
| CN102852976A (en) | Turbocharger oil film suspension sliding bearing | |
| CN102852627A (en) | Low-damping variable-area turbocharger | |
| CN202756090U (en) | Low-damping diesel engine turbocharger | |
| CN202756436U (en) | Turbocharger oil film suspension slide bearing | |
| CN202756088U (en) | Turbocharger low damping oil film suspension support structure | |
| CN202756089U (en) | Low-damping variable flow regulation type turbocharger | |
| CN102852631A (en) | Low-damping variable-flow regulation turbocharger | |
| CN205154905U (en) | Asynchronous rotation of low damping accuse warm type turbo charger | |
| CN201326420Y (en) | Separate coaxial loading device of turbocharger | |
| CN102852626A (en) | Synergistic turbocharger with gradual change air flue | |
| CN205154272U (en) | Differential floated low damping turbo charger slide bearing | |
| CN102852630A (en) | Suspension supporting structure of low damping oil of turbocharger | |
| CN202883100U (en) | Locomotive diesel engine with adjustable nozzle supercharger | |
| CN202483710U (en) | Turbine shell sliding variable cross-section device | |
| CN202756085U (en) | Gradual change air passage synergia type turbocharger | |
| CN102852629A (en) | Low-damping turbocharger for diesel engine | |
| JP5256986B2 (en) | Two-stage supercharging system for internal combustion engine, internal combustion engine and lubricating oil leakage prevention method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130102 |