JPS6253693B2 - - Google Patents
Info
- Publication number
- JPS6253693B2 JPS6253693B2 JP54118132A JP11813279A JPS6253693B2 JP S6253693 B2 JPS6253693 B2 JP S6253693B2 JP 54118132 A JP54118132 A JP 54118132A JP 11813279 A JP11813279 A JP 11813279A JP S6253693 B2 JPS6253693 B2 JP S6253693B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- ceramic
- rotor shaft
- supercharger
- rotor
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011225 non-oxide ceramic Substances 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は主に自動車の内燃機関に装着される過
給機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to a supercharger installed in an internal combustion engine of an automobile.
［従来の技術］
過給機は、従来より、レースやラリーなどの高
出力を指向する車両において、用いられていた
が、近年、燃料消費改善を指向する一般車両用内
燃機関としての関発が盛んになつてきている。[Prior art] Superchargers have traditionally been used in vehicles that aim for high output, such as in races and rallies, but in recent years, they have become increasingly popular in internal combustion engines for general vehicles that aim to improve fuel consumption. It is becoming popular.
［発明が解決しようとする問題点］
そこで、過給機を自動車など負荷変動の大きい
内燃機関に装着する場合、負荷変動に対する応答
性を良くするためロータの軽量化が必要であり、
また製造コスト低減のため構造の簡素化が重要で
ある。[Problems to be Solved by the Invention] Therefore, when a supercharger is installed in an internal combustion engine with large load fluctuations, such as an automobile, it is necessary to reduce the weight of the rotor in order to improve responsiveness to load fluctuations.
Furthermore, it is important to simplify the structure to reduce manufacturing costs.
さらに、過給機の性能を向上させる要件に、コ
ンプレツサーの効率を向上させる点があげられ
る。 Furthermore, one of the requirements for improving the performance of a supercharger is to improve the efficiency of the compressor.
これは、コンプレツサーの効率が向上すると、
コンプレツサー圧力比が一定の条件では、コンプ
レツサー出口の空気温度が下がるので、空気密度
の増加、および燃焼室内におけるノツキング抑制
効果により、エンジンの出力が向上するからであ
る。 This means that as the compressor becomes more efficient,
This is because when the compressor pressure ratio is constant, the air temperature at the compressor outlet decreases, which increases the air density and suppresses knocking in the combustion chamber, thereby improving the engine output.
本発明はSi3N4などの非酸化物セラミツクをロ
ータに用いて軽量化を計る場合に於て、軸、軸受
といつた摺動部の一方または両方にセラミツクを
用いることで構造の簡素化が可能となり、コンプ
レツサーの効率を向上する過給機の提供を目的と
する。 The present invention simplifies the structure by using ceramic for one or both of the sliding parts such as the shaft and bearings when using non-oxide ceramic such as Si 3 N 4 in the rotor to reduce weight. The aim is to provide a supercharger that improves compressor efficiency.
［問題点を解決するための手段］
本発明の過給機は、ケーシングに固定され吸入
空気に対して一定の傾斜角を有するように配列さ
れた複数の断面翼型ステーと、このステーに保持
されたセラミツク製の球面状の軸受部と、この球
面状の軸受部に一体に形成された円筒状の軸受部
と、端部を前記球面状の軸受部に回転可能に当接
させるとともに、側部を前記円筒状の軸受部に摺
動可能に支持されたセラミツク製のロータ軸とを
備えるという手段を採用した。[Means for Solving the Problems] The supercharger of the present invention includes a plurality of cross-sectional airfoil stays fixed to a casing and arranged at a constant angle of inclination with respect to intake air, and a plurality of cross-sectional airfoil stays held by the stays. a spherical bearing made of ceramic; a cylindrical bearing integrally formed with the spherical bearing; an end rotatably abutting the spherical bearing; The rotor shaft is made of ceramic and is slidably supported by the cylindrical bearing part.
［作用および発明の効果］
上記の構成により、本発明の過給機はつぎの作
用および効果を有する。[Actions and Effects of the Invention] With the above configuration, the supercharger of the present invention has the following actions and effects.
ロータ軸または軸受の一方またはその両方をセ
ラミツクで形成しているので、摺動面の潤滑が不
要となるかまたは簡単な潤滑機構で良く、よつて
過給機の構成部品数が減少できると共に構造が簡
素化でき、製造コストが低減できる。さらに、ス
テーの断面を翼型とすると共に吸入空気に対し一
定の傾斜角を有するよう配列せしめて入口案内翼
とすることにより、コンプレツサーへ流入する空
気に周方向の回転速度を付与し、コンプレツサー
の効率を向上できる。 Since one or both of the rotor shaft and bearings are made of ceramic, there is no need to lubricate the sliding surfaces or a simple lubrication mechanism is required, which reduces the number of components of the turbocharger and reduces the structure. can be simplified and manufacturing costs can be reduced. Furthermore, by making the cross section of the stay airfoil-shaped and arranging them at a constant angle of inclination with respect to the intake air to serve as inlet guide vanes, a rotational speed in the circumferential direction is imparted to the air flowing into the compressor. Can improve efficiency.
［実施例］
つぎに本発明を図に示す実施例に基づき説明す
る。[Example] Next, the present invention will be explained based on an example shown in the drawings.
第１図は本発明の過給機の第１実施例を示す。 FIG. 1 shows a first embodiment of the supercharger of the present invention.
１は過給機のケーシングを示す。ケーシング１
は、タービン側ケーシング１Ａ、コンプレツサー
側ケーシング１Ｂ、およびこれらを区隔する中間
壁１Ｃからなる。 1 shows the casing of the supercharger. Casing 1
consists of a turbine side casing 1A, a compressor side casing 1B, and an intermediate wall 1C that separates these.
２はロータを示す。ロータ２は、Si3N4を主成
分とするセラミツク製のロータ軸３、該ロータ軸
３と一体成型して焼結したタービンホイール４、
および該ロータ軸３を中央嵌合穴５１に嵌め込ん
で固定したコンプレツサーホイール５からなる。 2 indicates a rotor. The rotor 2 includes a rotor shaft 3 made of ceramic whose main component is Si 3 N 4 , a turbine wheel 4 integrally molded with the rotor shaft 3 and sintered,
and a compressor wheel 5 in which the rotor shaft 3 is fitted into a central fitting hole 51 and fixed.
ロータ軸３は、タービンホイール４から突出せ
しめたロータ軸突出部２１した一端が球状を呈す
る。 The rotor shaft 3 has a spherical end with a rotor shaft projecting portion 21 projecting from the turbine wheel 4 .
６はラジヤル形軸受としてのジヤーナル軸受を
示す。ジヤーナル軸受６は、ケーシング１の中間
壁１Ｃに設けられたロータ保持穴１１に嵌着され
る。ジヤーナル軸受６は、本実施例ではSiCを主
体とするセラミツクで作られ、ロータ２をタービ
ンホイール４とコンプレツサーホイール５との中
間のロータ軸中間部３０を摺動自在に軸支する。 6 indicates a journal bearing as a radial bearing. The journal bearing 6 is fitted into a rotor holding hole 11 provided in the intermediate wall 1C of the casing 1. In this embodiment, the journal bearing 6 is made of ceramic mainly composed of SiC, and supports the rotor 2 slidably on the rotor shaft intermediate portion 30 between the turbine wheel 4 and the compressor wheel 5.
７は軸受カバーを示す。軸受カバー７は、コン
プレツサー側ケーシング１Ｂ内にステー８で保持
する。 7 indicates a bearing cover. The bearing cover 7 is held by a stay 8 inside the compressor side casing 1B.
９は軸受カバー７内に固着したSiCを主体とす
るセラミツク製のつりがね状軸受を示す。この軸
受は球面状の軸受部と円筒状の軸受部から成る。
スラスト形軸受としてのつりがね状軸受９は、ロ
ータ軸突出部２１を球面状および円筒状の軸受部
により摺動自在に軸支しタービンホイール４によ
り該ロータ軸に加わるスラスト荷重を受けると共
にラジアル荷重を受ける。 Reference numeral 9 indicates a ring-shaped bearing made of ceramic mainly made of SiC, which is fixed in the bearing cover 7. This bearing consists of a spherical bearing part and a cylindrical bearing part.
The bell-shaped bearing 9 as a thrust-type bearing supports the rotor shaft protruding part 21 in a slidable manner with a spherical and cylindrical bearing part, receives a thrust load applied to the rotor shaft by the turbine wheel 4, and radially supports the rotor shaft protruding part 21. Under load.
１０はタービンホイール４に平行的に取付けた
遮熱板を示す。 10 shows a heat shield plate attached in parallel to the turbine wheel 4.
本実施例の過給機の作用を図に基づき説明す
る。 The operation of the supercharger of this embodiment will be explained based on the drawings.
本実施例の過給機は、ロータ軸３と該ロータ軸
を軸支する軸受６および９とがセラミツク製であ
り、セラミツクは金属に比例してはるかに高速、
高荷重の摺動に耐え焼付等の問題もないことによ
り、ロータ軸突出部２１と軸受９との摺動面は無
潤滑とすることができ、またロータ軸中間部３０
と軸受６との摺動面も無潤滑かまたは簡単な潤滑
装置とすることができる。さらに軸受９を設けて
スラスト荷重を受け持たせているのでケーシング
の中間壁１Ｃ部分にスラストベアリングを装着す
る必要がない。 In the turbocharger of this embodiment, the rotor shaft 3 and the bearings 6 and 9 that pivotally support the rotor shaft are made of ceramic.
The sliding surface between the rotor shaft protrusion 21 and the bearing 9 can be lubricated-free because it can withstand high-load sliding and there is no problem such as seizure.
The sliding surfaces between the bearing 6 and the bearing 6 may also be lubricated or may be provided with a simple lubricating device. Furthermore, since the bearing 9 is provided to bear the thrust load, there is no need to mount a thrust bearing on the intermediate wall 1C of the casing.
また上記ステー８の断面を翼型とすると共に吸
入空気に対し一定の傾斜角を有するよう配列せし
めて入口案内翼とすることでコンプレツサーへ流
入する空気に周方向の回転速度を付与し、コンプ
レツサーの効率を向上できる。 In addition, by making the cross section of the stay 8 airfoil-shaped and arranging it at a constant angle of inclination with respect to the intake air to serve as an inlet guide vane, a circumferential rotational speed is imparted to the air flowing into the compressor. Can improve efficiency.
第２図は本発明の過給機の第２実施例を示す。 FIG. 2 shows a second embodiment of the supercharger of the present invention.
１０１は過給機のケーシングを示す。１０２は
セラミツク製ロータを示す。ロータ１０２は、１
つのデイスク１０３にタービンブレード１０４と
コンプレツサーブレード１０５とを一体に形成し
ている。 101 indicates the casing of the supercharger. 102 indicates a ceramic rotor. The rotor 102 is 1
A turbine blade 104 and a compressor blade 105 are integrally formed on one disk 103.
ケーシング１０１内のコンプレツサー側にステ
ー１０７で保持したセラミツク製軸受１０８とタ
ービン側にステー１０９で保持したセラミツク製
軸受１１０とにより、ロータ１０２の両側に突出
せしめたロータ軸突出部１１１および１１２を軸
支している。 The rotor shaft protrusions 111 and 112 protruding from both sides of the rotor 102 are supported by a ceramic bearing 108 held by a stay 107 on the compressor side in the casing 101 and a ceramic bearing 110 held by a stay 109 on the turbine side. are doing.
第１図は本発明の過給機の第１実施例を示す断
面図、第２図は本発明の過給機の第２実施例を示
す断面図である。
図中、１，１０１……ケーシング、２，１０２
……ロータ、３……ロータ軸、４……タービンホ
イール、５……コンプレツサーホイール、６……
ジヤーナル軸受、７……軸受カバー、８，１０
７，１０９……ステー、９，１０８，１１０……
セラミツク製軸受、１０……遮熱板、１０３……
デイスク、１０４……タービンブレード、１０５
……コンプレツサーブレード。
FIG. 1 is a cross-sectional view showing a first embodiment of a supercharger according to the present invention, and FIG. 2 is a cross-sectional view showing a second embodiment of a supercharger according to the present invention. In the figure, 1,101...Casing, 2,102
...Rotor, 3...Rotor shaft, 4...Turbine wheel, 5...Compressor wheel, 6...
Journal bearing, 7... Bearing cover, 8, 10
7,109... Stay, 9,108,110...
Ceramic bearing, 10... Heat shield plate, 103...
Disk, 104...Turbine blade, 105
...Complete serv blade.
Claims (1)
の傾斜角を有するように配列された複数の断面翼
型ステーと、このステーに保持されたセラミツク
製の球面状の軸受部と、この球面状の軸受部に一
体に形成された円筒状の軸受部と、端部を前記球
面状の軸受部に回転可能に当接させるとともに、
側部を前記円筒状の軸受部に摺動可能に支持させ
たセラミツク製のロータ軸とを備えた過給機。1. A plurality of cross-sectional airfoil-shaped stays fixed to the casing and arranged at a constant angle of inclination with respect to the intake air, a spherical bearing made of ceramic held by the stay, and this spherical bearing. a cylindrical bearing part integrally formed with the part, and an end part rotatably abutting on the spherical bearing part;
A supercharger comprising a ceramic rotor shaft whose side portion is slidably supported by the cylindrical bearing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11813279A JPS5644426A (en) | 1979-09-14 | 1979-09-14 | Supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11813279A JPS5644426A (en) | 1979-09-14 | 1979-09-14 | Supercharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5644426A JPS5644426A (en) | 1981-04-23 |
| JPS6253693B2 true JPS6253693B2 (en) | 1987-11-11 |
Family
ID=14728829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11813279A Granted JPS5644426A (en) | 1979-09-14 | 1979-09-14 | Supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5644426A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3218311A1 (en) * | 1982-05-14 | 1983-11-24 | Ficht GmbH, 8011 Kirchseeon | CRANKSHAFT ARRANGEMENT FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY TWO-STROKE INTERNAL COMBUSTION ENGINES WITH CYLINDERS OVERLAY FROM OTHER |
| DE3642121A1 (en) * | 1986-12-10 | 1988-06-23 | Mtu Muenchen Gmbh | DRIVE SYSTEM |
| CN103696818B (en) * | 2012-12-31 | 2017-01-25 | 摩尔动力(北京)技术股份有限公司 | Highly-pressurized thermodynamic circulating system |
| CN103742201B (en) * | 2013-01-10 | 2016-08-24 | 摩尔动力(北京)技术股份有限公司 | Vertical and high-speed bearing impeller mechanism |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996112A (en) * | 1972-12-26 | 1974-09-11 | ||
| JPS5390515A (en) * | 1977-01-20 | 1978-08-09 | Mitsubishi Heavy Ind Ltd | Supercharger |
-
1979
- 1979-09-14 JP JP11813279A patent/JPS5644426A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4996112A (en) * | 1972-12-26 | 1974-09-11 | ||
| JPS5390515A (en) * | 1977-01-20 | 1978-08-09 | Mitsubishi Heavy Ind Ltd | Supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5644426A (en) | 1981-04-23 |
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