JPS6244096Y2 - - Google Patents
Info
- Publication number
- JPS6244096Y2 JPS6244096Y2 JP10443783U JP10443783U JPS6244096Y2 JP S6244096 Y2 JPS6244096 Y2 JP S6244096Y2 JP 10443783 U JP10443783 U JP 10443783U JP 10443783 U JP10443783 U JP 10443783U JP S6244096 Y2 JPS6244096 Y2 JP S6244096Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle vane
- housing
- wall surface
- turbine
- thermal expansion
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
- Control Of Turbines (AREA)
Description
【考案の詳細な説明】
本考案は可変ノズルベーン付ターボ過給機の改
良に関する。[Detailed Description of the Invention] The present invention relates to an improvement of a turbo supercharger with variable nozzle vanes.
一般にターボ過給機においては、エンジン低速
回転時に十分なタービン入口圧を得ることができ
ないため、過給が行われないという不具合があつ
た。そこで、タービンの外周に沿つて配設されハ
ウジングに回動可能に支持された可変ノズルベー
ンを具備し、同可変ノズルベーンにより排ガス通
路を絞ることによつて、エンジン低速回転時でも
十分なタービン入口圧を得ることができるように
構成された可変ノズルベーン付ターボ過給機が知
られている。 Generally, turbochargers have a problem in that supercharging is not performed because sufficient turbine inlet pressure cannot be obtained when the engine rotates at low speed. Therefore, a variable nozzle vane is installed along the outer circumference of the turbine and rotatably supported by the housing. By narrowing the exhaust gas passage with the variable nozzle vane, sufficient turbine inlet pressure can be maintained even when the engine rotates at low speed. A turbo supercharger with a variable nozzle vane is known that is configured to provide a variable nozzle vane.
このノズルベーンは、その回動軸方向端面とハ
ウジング内壁面との間隙を余り小さく設定してし
まうと運転中にノズルベーン自体の熱膨張とハウ
ジングの熱膨張の差あるいはノズルベーンを回動
自在に支持するハウジングの部分部分が熱膨張の
差によつて、該ノズルベーン端面とハウジング内
壁面に接触したり、あるいはノズルベーンの回動
軸が傾いて同ノズルベーンの肩部がハウジング内
壁面に接触したりすることにより、同ノズルベー
ンの回動が円滑に行われなくなつてしまう不具合
が生じる。 If the gap between the end face in the direction of the rotating shaft and the inner wall surface of the housing is set too small, the difference between the thermal expansion of the nozzle vane itself and the housing during operation will occur, or the housing that rotatably supports the nozzle vane will Due to the difference in thermal expansion, the end face of the nozzle vane contacts the inner wall surface of the housing, or the rotation axis of the nozzle vane is tilted and the shoulder of the nozzle vane contacts the inner wall surface of the housing. This causes a problem in that the nozzle vane does not rotate smoothly.
逆にノズルベーンの回動軸方向端面とハウジン
グ内壁面との間隙を余り大きく設定してしまう
と、ノズルベーンを回動して排ガス通路を絞つた
位置に変位させても、該間隙から排ガスが漏洩し
てしまうために、十分なタービン入口圧を得るこ
とができないという不具合が生じる。 On the other hand, if the gap between the end face of the nozzle vane in the rotation axis direction and the inner wall surface of the housing is set too large, the exhaust gas will leak from the gap even if the nozzle vane is rotated to a position where the exhaust gas passage is narrowed. This causes the problem that sufficient turbine inlet pressure cannot be obtained.
本考案は上記に鑑み創案されたもので、タービ
ンの外周に沿つて配設されハウジングに回動可能
に支持された可変ノズルベーンを具備し、上記ノ
ズルベーンの回動軸方向端面が上記ハウジングの
内壁面に近接対向するように構成されたものにお
いて、上記ノズルベーンの回動軸方向端面に対向
するハウジングの内壁面が、同内壁面における同
ノズルベーンの回動軸に対応する部分を頂部とす
るテーパ面から成ることを特徴とする可変ノズル
ベーン付ターボ過給機を要旨とする。 The present invention has been devised in view of the above, and includes a variable nozzle vane disposed along the outer circumference of a turbine and rotatably supported by a housing, the end face of the nozzle vane in the rotational axis direction facing the inner wall surface of the housing. The inner wall surface of the housing facing the end surface in the direction of the rotational axis of the nozzle vane is formed from a tapered surface having a top at a portion of the inner wall surface corresponding to the rotational axis of the nozzle vane. This article focuses on a turbo supercharger with variable nozzle vanes, which is characterized by:
以下、本考案の一実施例を添付図面に従つて詳
細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.
図中、符号２はターボ過給機を総括的に示し、
４はハウジング、６は同ハウジング４に支持され
たタービン、８はハウジング４内に形成されたタ
ービン６への排ガス流入路、１０はハウジング４
に回動自在に支持されタービン６の外周に沿つて
複数個配設されたノズルベーンである。ノズルベ
ーン１０は、第２図に示す如く、実線位置におい
ては通路面積l1、２点鎖線位置においては通路面
積l2を得ることができるものである。 In the figure, numeral 2 generally indicates the turbocharger,
4 is a housing, 6 is a turbine supported by the housing 4, 8 is an exhaust gas inflow path to the turbine 6 formed in the housing 4, and 10 is a housing 4
A plurality of nozzle vanes are rotatably supported by the turbine 6 and arranged along the outer periphery of the turbine 6. As shown in FIG. 2, the nozzle vane 10 can provide a passage area l 1 at the solid line position and a passage area l 2 at the two-dot chain line position.
そして、ノズルベーン１０の回動軸方向端面１
２はハウジング４の内壁面１４に近接対向するよ
うに構成されると共に、同内壁面１４は、同内壁
面１４におけるノズルベーン１０の回動軸線１０
ａに対応する部分１４ａを頂部とするテーパ面か
ら成つている。 The end face 1 of the nozzle vane 10 in the rotation axis direction
2 is configured to closely oppose the inner wall surface 14 of the housing 4, and the inner wall surface 14 is configured to be aligned with the rotation axis 10 of the nozzle vane 10 on the inner wall surface 14.
It consists of a tapered surface with a portion 14a corresponding to a as the top.
上記構成によれば、ノズルベーン１０の熱膨張
とハウジング４の熱膨張の差によつてノズルベー
ン１０の軸方向寸法がハウジング４よりも相対的
に大きくなつて、同ノズルベーン１０の端面１２
がハウジング４の内壁面１４に接触した場合で
も、内壁面１４の頂部１４ａがノズルベーン１０
の端面１２に接触するのみであるので、ノズルベ
ーン１０の回動操作に対する摩擦反力を大巾に低
減できる。更に、ノズルベーン１０を支持するハ
ウジング４の部分部分の熱膨張の差によつて同ノ
ズルベーン１０の回動軸線が傾いた場合でも同ノ
ズルベーン１０の肩部のハウジング４の内壁面に
対する接触を避けることができる。 According to the above configuration, the axial dimension of the nozzle vane 10 becomes relatively larger than that of the housing 4 due to the difference between the thermal expansion of the nozzle vane 10 and the thermal expansion of the housing 4.
Even if the top portion 14a of the inner wall surface 14 contacts the inner wall surface 14 of the housing 4, the top portion 14a of the inner wall surface 14 touches the nozzle vane 10.
Since it only contacts the end surface 12 of the nozzle vane 10, the frictional reaction force against the rotational operation of the nozzle vane 10 can be greatly reduced. Furthermore, even if the rotation axis of the nozzle vane 10 is tilted due to a difference in thermal expansion between the parts of the housing 4 that support the nozzle vane 10, it is possible to prevent the shoulder of the nozzle vane 10 from coming into contact with the inner wall surface of the housing 4. can.
したがつて、本実施例によればノズルベーン１
０の端面１２とハウジング４の内壁との間隙を実
質上大巾に小さく設定することができ、該間隙か
らの排ガスの漏洩の低減でき、これにより大巾な
性能向上を計ることができるという効果を奏す
る。なお、S1はノズルベーン１０の軸方向の熱膨
張とハウジング４の熱膨張とハウジング４の熱膨
張との差を見込んだ寸法とし、S2およびS3はノズ
ルベーン１０の支持部の熱膨張による回動軸１０
ａの傾きおよび駆動力による回動軸１０ａの傾き
を見込んだ寸法とするのが好ましい。 Therefore, according to this embodiment, the nozzle vane 1
The gap between the end face 12 of the housing 4 and the inner wall of the housing 4 can be set to be substantially narrower, and the leakage of exhaust gas from the gap can be reduced, thereby significantly improving performance. play. Note that S 1 is a dimension that takes into account the difference between the thermal expansion of the nozzle vane 10 in the axial direction, the thermal expansion of the housing 4, and the thermal expansion of the housing 4, and S 2 and S 3 are dimensions that take into account the difference between the thermal expansion of the nozzle vane 10 in the axial direction and the thermal expansion of the housing 4. Moving axis 10
It is preferable that the dimensions take into account the inclination of a and the inclination of the rotating shaft 10a due to the driving force.
第１図は本考案の一実施例を示す断面図、第２
図は第１図のノベルベーン１０を右方から見た位
置説明図、第３図は第１図の部拡大図である。
２……過給機、４……ハウジング、６……ター
ビン、１０……ノズルベーン、１２……端面、１
４……内壁面、１４ａ……頂部。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a positional explanatory diagram of the novel vane 10 in FIG. 1 seen from the right, and FIG. 3 is an enlarged view of a portion of FIG. 1. 2...Supercharger, 4...Housing, 6...Turbine, 10...Nozzle vane, 12...End face, 1
4...Inner wall surface, 14a...Top part.
Claims (1)
回動可能に支持された可変ノズルベーンを具備
し、上記ノズルベーンの回動軸方向端面が上記ハ
ウジングの内壁面に近接対向するように構成され
たものにおいて、上記ノズルベーンの回動軸方向
端面に対向するハウジングの内壁面が、同内壁面
における同ノズルベーンの回動軸に対応する部分
を頂部とするテーパ面から成ることを特徴とする
可変ノズルベーン付ターボ過給機。 A variable nozzle vane is provided along the outer periphery of the turbine and rotatably supported by a housing, and the nozzle vane is configured such that an end surface in the direction of the rotational axis closely faces an inner wall surface of the housing, A turbo supercharger with a variable nozzle vane, wherein the inner wall surface of the housing that faces the end surface in the direction of the rotational axis of the nozzle vane is comprised of a tapered surface having a top at a portion of the inner wall surface that corresponds to the rotational axis of the nozzle vane. Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10443783U JPS6012630U (en) | 1983-07-05 | 1983-07-05 | Turbocharger with variable nozzle vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10443783U JPS6012630U (en) | 1983-07-05 | 1983-07-05 | Turbocharger with variable nozzle vane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6012630U JPS6012630U (en) | 1985-01-28 |
| JPS6244096Y2 true JPS6244096Y2 (en) | 1987-11-19 |
Family
ID=30245231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10443783U Granted JPS6012630U (en) | 1983-07-05 | 1983-07-05 | Turbocharger with variable nozzle vane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6012630U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4807271B2 (en) * | 2007-01-30 | 2011-11-02 | 株式会社Ｉｈｉ | Variable capacity turbocharger |
| DE102011108195B4 (en) * | 2011-07-20 | 2022-10-27 | Ihi Charging Systems International Gmbh | Turbine for an exhaust gas turbocharger |
| EP2787181B1 (en) * | 2011-11-30 | 2019-01-09 | Mitsubishi Heavy Industries, Ltd. | Radial turbine |
| JP7107433B2 (en) * | 2019-04-01 | 2022-07-27 | 株式会社Ihi | Variable displacement turbocharger |
-
1983
- 1983-07-05 JP JP10443783U patent/JPS6012630U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6012630U (en) | 1985-01-28 |
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