JPS6392817A - Thrust bearing of supercharger - Google Patents
Thrust bearing of superchargerInfo
- Publication number
- JPS6392817A JPS6392817A JP61236140A JP23614086A JPS6392817A JP S6392817 A JPS6392817 A JP S6392817A JP 61236140 A JP61236140 A JP 61236140A JP 23614086 A JP23614086 A JP 23614086A JP S6392817 A JPS6392817 A JP S6392817A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- bearing
- thrust bearing
- groove
- sweep
- 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
- 238000010408 sweeping Methods 0.000 abstract description 9
- 230000000717 retained effect Effects 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Supercharger (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、過給機に係り、特に軸受損失の低減に好適な
スラスト軸受に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a supercharger, and particularly to a thrust bearing suitable for reducing bearing loss.
従来のスラスト軸受は、実開昭60−137128号に
記載のように、閉ループ状に形成されたオイル掃出溝と
外周部下端に設けられた切欠部との間に。In a conventional thrust bearing, as described in Japanese Utility Model Application No. 60-137128, there is a gap between an oil sweep groove formed in a closed loop and a notch provided at the lower end of the outer periphery.
凸状の端面が形成される構造となっていた。この構造で
は、スラスト軸受部へのオイル供給、潤滑掃出という過
程で発生するオイル粘性による軸受損失を、その減少化
という点について配慮されていなかった。It had a structure in which a convex end face was formed. In this structure, no consideration was given to reducing bearing loss due to oil viscosity that occurs during the process of oil supply to the thrust bearing and lubricant sweeping.
上記従来技術はスラスト軸受部の軸受損失の低減という
点についての配慮がされておらず、スラスト軸受へ供給
されたオイルがオイル掃出溝と上端部切欠との間にある
凸状端面によって、潤滑後の速やかな掃出という機能を
妨たげられ、オイル掃出溝に保持される量が多くなり、
ロータ軸の摺動面とスラスト軸受部の摺動平面部に過剰
な保持量となり、ロータ軸の回転をオイルが抵抗となり
低下させ過給機の効率低下を招くという軸受損失の増加
という問題があった。The above conventional technology does not take into consideration the reduction of bearing loss in the thrust bearing, and the oil supplied to the thrust bearing is lubricated by the convex end surface between the oil sweep groove and the upper end notch. This prevents the ability to quickly sweep the oil afterwards, and the amount retained in the oil sweep groove increases.
There is a problem of increased bearing loss due to excessive retention on the sliding surface of the rotor shaft and the sliding surface of the thrust bearing, which causes resistance to the rotation of the rotor shaft and reduces the efficiency of the turbocharger. Ta.
本発明の目的は、過剰なオイル保持量という問題を、オ
イル掃出溝と上端部切欠を連通するオイル掃出通路によ
って、オイル掃出を速やかに行ないロータ軸の回転性を
妨げる軸受損失を低減することにある。The purpose of the present invention is to solve the problem of excessive oil retention by using an oil sweep passage that communicates the oil sweep groove with the upper end notch to quickly sweep the oil and reduce bearing loss that impedes the rotation of the rotor shaft. It's about doing.
上記目的は、オイル掃出溝と上端部切欠との間にオイル
掃出通路を設ける構造とすることにより達成される。The above object is achieved by providing a structure in which an oil sweep passage is provided between the oil sweep groove and the upper end notch.
オイル掃出溝と上端部切欠の間に設けられたオイル掃出
通路によって、スラスト軸受部へ供給さたオイルは、潤
滑を終えた後、オイル掃出溝より速やかにオイル描出通
路へと導かれ、オイル掃出溝に保持されるオイル量が少
なくなり、過剰な万イル量が抵抗となってもたらすロー
タ軸の回転性の低下という軸受損失を低減することがで
きる。After the oil supplied to the thrust bearing part is lubricated by the oil sweep passage provided between the oil sweep groove and the upper end notch, the oil is quickly guided to the oil drawing passage from the oil sweep groove. The amount of oil retained in the oil sweep groove is reduced, and the bearing loss caused by the reduction in the rotatability of the rotor shaft caused by the excessive oil amount acting as resistance can be reduced.
以下1本発明の一実施例を第1図と第2図により説明す
る。スラスト軸受1は、軸受箱と接する端面2に設けら
れたオイルを保持する溝3と該溝と連通しロータ軸心に
向うオイル通路4と該オイル通路と連通しスラスト軸受
の両側に連通ずるオイル通孔5と該オイル通孔の回りに
設けられたランド状且つテーパ部を有するスラスト軸受
摺動平面6と該摺動平面6の回りに設けられた閉ループ
欠8と該オイル掃出溝7と該切欠8を連通するオイル掃
出通路9を有する構造となっている。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The thrust bearing 1 has a groove 3 for holding oil provided on an end surface 2 in contact with a bearing box, an oil passage 4 communicating with the groove and facing the rotor axis, and an oil passage 4 communicating with the oil passage and communicating with both sides of the thrust bearing. A through hole 5, a thrust bearing sliding plane 6 having a land shape and a tapered part provided around the oil through hole, a closed loop notch 8 provided around the sliding surface 6, and the oil sweeping groove 7. The structure includes an oil sweep passage 9 that communicates with the notch 8.
第3図、第4図には従来技術を示す。スラスト軸受摺動
平面6の回りに設けられた閉ループ状のオイル掃出溝7
と外周下端部に形成された切欠8の間に凸状端面10が
形成されている点が本発明の実施例と異なる。3 and 4 show the prior art. A closed loop oil sweep groove 7 provided around the thrust bearing sliding plane 6
This differs from the embodiment of the present invention in that a convex end surface 10 is formed between the notch 8 formed at the lower end of the outer periphery.
次に本発明の一実施例の作動を第5図により。Next, the operation of one embodiment of the present invention is illustrated in FIG.
従来技術の作動を示す第6図と比較しながら、説明する
。This will be explained while comparing with FIG. 6 which shows the operation of the prior art.
第5図において、軸受箱11のオイルギヤラリ−12よ
り、オイルがスラスト軸受1のオイル保持溝3へ導通さ
れ、オイル保持溝と連通したオイル通路4を通り、オイ
ル通孔5より、ローター軸13に組込れた回転軸側のス
ラスト軸受14a。In FIG. 5, oil is conducted from the oil gear rally 12 of the bearing box 11 to the oil holding groove 3 of the thrust bearing 1, passes through the oil passage 4 communicating with the oil holding groove, and enters the rotor shaft 13 through the oil passage hole 5. Thrust bearing 14a on the incorporated rotating shaft side.
14bとの摺動面6に供給される。摺動面6を潤滑した
オイルはローター軸13の回転による遠心力により軸の
円周方向へ掃出される力を受け、オイル掃出溝7へ導か
れる。オイル掃出溝へ導かれたオイルは、オイル掃出溝
7より上端部切欠8へ連通されたオイル掃出通路9を通
り、速やかに軸受箱11のオイルドレイン通路15へ掃
出される。14b is supplied to the sliding surface 6. The oil that has lubricated the sliding surface 6 is swept out in the circumferential direction of the shaft due to the centrifugal force caused by the rotation of the rotor shaft 13, and is guided to the oil sweeping groove 7. The oil led to the oil sweep groove passes through an oil sweep passage 9 communicating from the oil sweep groove 7 to the upper end notch 8, and is quickly swept to the oil drain passage 15 of the bearing box 11.
従来技術では、第6図において、本発明の実施例と同様
に、オイルはオイル通路5より摺動面6を潤滑し、ロー
ター軸13の回転による遠心力でオイル掃出溝7へ導び
かれるが、オイル掃出t:It 7と上端部切欠8の間
にある凸状端面10が、オイル掃出時の障害物となり、
オイル掃出が速やかに行なわれない、これより、オイル
がオイル保持溝に充満し、ローター軸13とローター軸
側のスラスト軸受14a、14bの回転を、オイルの粘
性抵抗の大という形で妨げ、過給機の軸受損失を増大さ
せる。In the prior art, as shown in FIG. 6, oil lubricates the sliding surface 6 from the oil passage 5 and is guided to the oil sweep groove 7 by the centrifugal force caused by the rotation of the rotor shaft 13, as in the embodiment of the present invention. However, the convex end surface 10 between the oil sweep t:It 7 and the upper end notch 8 becomes an obstacle during oil sweep,
The oil is not swept out quickly, and as a result, the oil retaining groove is filled with oil, which impedes the rotation of the rotor shaft 13 and the thrust bearings 14a and 14b on the rotor shaft side due to the large viscous resistance of the oil. Increases bearing loss in supercharger.
本実施例では、前述したように、潤滑を終えたオイルが
速やかに掃出されるため、オイル粘性抵抗による過給機
の軸受損失を従来技術と比較して低減させることができ
る。また軸受損失の低減により、過給機停止状態から、
ローター軸が回転を始める作動時の起動トルクも減少し
、過給機の起動立上り特性も向上する。また、オイル掃
出通路9により、オイル掃出時のオイル粘性抵抗が減少
する為、オイル温度が低く、粘性が高い時にもその効果
をより一層顕著にする6
〔発明の効果〕
本発明によれば、オイル粘性抵抗による軸受損失を低減
できるので、第7図、第8図、第9図に示すように、軸
受損失性能、起動トルク特性が向上し、過給機の性能を
向上させることができ、また、低温起動時の性能も向上
させることができるという効果がある。In this embodiment, as described above, since the oil that has finished lubrication is quickly swept away, the bearing loss of the supercharger due to oil viscous resistance can be reduced compared to the prior art. In addition, by reducing bearing loss, the turbocharger can be
The starting torque when the rotor shaft begins to rotate is also reduced, and the startup characteristics of the supercharger are also improved. Furthermore, since the oil viscous resistance during oil sweeping is reduced by the oil sweeping passage 9, the effect becomes even more pronounced even when the oil temperature is low and the viscosity is high.6 [Effects of the Invention] According to the present invention For example, bearing loss due to oil viscous resistance can be reduced, so as shown in Figures 7, 8, and 9, bearing loss performance and starting torque characteristics are improved, and the performance of the supercharger can be improved. This also has the effect of improving performance at low temperature start-up.
第1図は本発明の一実施例正面図、第2図はA−A断面
図、第3図は従来技術の正面図、第4図はB−B断面図
、第5図は本発明の一実施例の構造と動作図、第6@は
従来技術の構造と動作図。
第7図、第8図、第9図は効果を示した図である。
1・・・スラスト軸受、9・・・オイル掃出通路。FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line A-A, FIG. The structure and operation diagram of one embodiment, and the sixth @ is the structure and operation diagram of the conventional technology. FIG. 7, FIG. 8, and FIG. 9 are diagrams showing the effects. 1... Thrust bearing, 9... Oil sweep passage.
Claims (1)
ーター軸のもう一端にあるコンプレッサ翼車と、タービ
ン翼車とコンプレッサ翼車の間にあり軸のラジアル方向
の軸力を支持するラジアル軸受とスラスト方向の軸力を
支持するスラスト軸受と軸受部材を収納する軸受箱を有
する過給機のスラスト軸受において、軸受箱と接する端
面に設けられたオイルを保持する溝と、該溝と連通しロ
ータ軸心に向う少なくとも1つ以上のオイル通路と、該
オイル通路と連通しスラスト軸受の両側に連通する少な
くとも1つ以上のオイル通孔と、該オイル通孔の回りに
設けられた少なくとも1つ以上のランド状且つテーパ部
を有するスラスト軸受摺動平面と、該摺動平面の回りに
設けられた閉ループ状のオイル掃出溝と、外周下端部に
形成された切欠と、該オイル掃出溝と該切欠を連通する
オイル掃出通路を設けたことを特徴とする過給機のスラ
スト軸受。1. A turbine wheel, a rotor shaft connected to the wheel, a compressor wheel at the other end of the rotor shaft, and a radial wheel located between the turbine wheel and compressor wheel that supports the axial force in the radial direction of the shaft. In a thrust bearing for a supercharger, which has a thrust bearing that supports the bearing and the axial force in the thrust direction, and a bearing box that houses the bearing member, a groove that holds oil provided on an end surface that contacts the bearing box and communicates with the groove. At least one oil passage facing the rotor axis, at least one oil passage communicating with the oil passage and communicating with both sides of the thrust bearing, and at least one oil passage provided around the oil passage. A thrust bearing sliding plane having three or more land-shaped and tapered parts, a closed-loop oil sweep groove provided around the sliding plane, a notch formed at the lower end of the outer periphery, and the oil sweep A thrust bearing for a supercharger, characterized in that an oil sweep passage communicating between a groove and the notch is provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61236140A JPS6392817A (en) | 1986-10-06 | 1986-10-06 | Thrust bearing of supercharger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61236140A JPS6392817A (en) | 1986-10-06 | 1986-10-06 | Thrust bearing of supercharger |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6392817A true JPS6392817A (en) | 1988-04-23 |
Family
ID=16996350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61236140A Pending JPS6392817A (en) | 1986-10-06 | 1986-10-06 | Thrust bearing of supercharger |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6392817A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0250137U (en) * | 1988-09-30 | 1990-04-09 | ||
JPH06212990A (en) * | 1992-11-20 | 1994-08-02 | Cummins Engine Co Inc | Bearing device for turbo charger |
WO2008129046A3 (en) * | 2007-04-24 | 2009-01-22 | Continental Automotive Gmbh | Axial bearing, particularly for a turbocharger |
JP2009121273A (en) * | 2007-11-13 | 2009-06-04 | Ihi Corp | Supercharger |
JP2009127437A (en) * | 2007-11-20 | 2009-06-11 | Ihi Corp | Supercharger |
DE102008045229A1 (en) * | 2008-08-30 | 2010-03-04 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Axial bearing for shaft of exhaust gas turbo-charger utilized for increasing efficiency of motor vehicle, has oil- supply channels, discharge channels and wedge surfaces provided as negative contours in surfaces of axial bearing washer |
US20120308365A1 (en) * | 2011-05-31 | 2012-12-06 | Woollenweber William E | Turbocharger bearing system |
JP2014101826A (en) * | 2012-11-21 | 2014-06-05 | Ihi Corp | Supercharger |
-
1986
- 1986-10-06 JP JP61236140A patent/JPS6392817A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0250137U (en) * | 1988-09-30 | 1990-04-09 | ||
JPH06212990A (en) * | 1992-11-20 | 1994-08-02 | Cummins Engine Co Inc | Bearing device for turbo charger |
WO2008129046A3 (en) * | 2007-04-24 | 2009-01-22 | Continental Automotive Gmbh | Axial bearing, particularly for a turbocharger |
US8240921B2 (en) | 2007-04-24 | 2012-08-14 | Continental Automotive Gmbh | Axial bearing for a turbocharger |
JP2009121273A (en) * | 2007-11-13 | 2009-06-04 | Ihi Corp | Supercharger |
JP2009127437A (en) * | 2007-11-20 | 2009-06-11 | Ihi Corp | Supercharger |
DE102008045229A1 (en) * | 2008-08-30 | 2010-03-04 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Axial bearing for shaft of exhaust gas turbo-charger utilized for increasing efficiency of motor vehicle, has oil- supply channels, discharge channels and wedge surfaces provided as negative contours in surfaces of axial bearing washer |
DE102008045229B4 (en) | 2008-08-30 | 2019-09-05 | BMTS Technology GmbH & Co. KG | thrust |
US20120308365A1 (en) * | 2011-05-31 | 2012-12-06 | Woollenweber William E | Turbocharger bearing system |
US8845271B2 (en) * | 2011-05-31 | 2014-09-30 | William E. Woollenweber | Turbocharger bearing system |
JP2014101826A (en) * | 2012-11-21 | 2014-06-05 | Ihi Corp | Supercharger |
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