JPH0252092B2 - - Google Patents
Info
- Publication number
- JPH0252092B2 JPH0252092B2 JP60241551A JP24155185A JPH0252092B2 JP H0252092 B2 JPH0252092 B2 JP H0252092B2 JP 60241551 A JP60241551 A JP 60241551A JP 24155185 A JP24155185 A JP 24155185A JP H0252092 B2 JPH0252092 B2 JP H0252092B2
- Authority
- JP
- Japan
- Prior art keywords
- partition plate
- downstream end
- gas flow
- circumferential edge
- spiral
- 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 - Lifetime
Links
Landscapes
- Supercharger (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はエンジンの排気ターボ過給機に関し、
特にタービンケーシング内にそれぞれとは別体の
渦巻状仕切板を配置して２つの渦巻状ガス流路を
形成した排気ターボ過給機に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an engine exhaust turbo supercharger,
In particular, the present invention relates to an exhaust turbo supercharger in which separate spiral partition plates are arranged in a turbine casing to form two spiral gas flow paths.
（従来技術）
排気ターボ過給機は、エンジンの排ガスの圧力
を利用して吸気を過給することにより、エンジン
の充填効率をたかめ、エンジン出力の向上を図る
ものであるが、実開昭59−85335号公報に開示さ
れているように、タービンケーシング内にそれと
は別体の仕切板をタービン翼車の回転軸線と直角
に配置してガス流路を並列状に２分割した排気タ
ーボ過給機が提案されている。第６図はそのよう
な排気ターボ過給機をガス流路の上流端側からみ
た側面図で、１はタービンケーシング、２は仕切
板、３，４は仕切板２によつて２分割された一次
側および二次側のガス流路である。Ｖは一方のガ
ス流路４に設けられたバルブであり、このバルブ
Ｖがエンジンの運転状況に応じて開閉されること
により、排気ガスを一次側のガス流路３のみに流
す場合と、一次側および二次側のガス流路３およ
び４の双方に流す場合とが選択される。第７図は
タービンケーシング１をタービン翼車（図示せ
ず）の回転軸線と直角な平面で分割して仕切板２
の配置状態を示す正面図で、仕切板２はガス流路
３，４に沿つて渦巻状に形成された１枚の鉄板よ
りなり、かつそのガス流路３，４に沿つてみた場
合の仕切板２の下流端部２ａが上流側のガス流入
路口部にある上流部分２ｂに一体に連接されて環
状をなし、前記下流端部２ａの内周縁が、タービ
ン翼車の回転軸の軸線方向からみて、軸心からタ
ービンケーシング１の渦巻状外周壁までの半径が
急増するガス流入路入口部とガス流路下流端部と
の合流空間部まで連続している。(Prior art) Exhaust turbo superchargers increase engine charging efficiency and improve engine output by supercharging intake air using the pressure of engine exhaust gas. - As disclosed in Publication No. 85335, an exhaust turbo supercharger in which a separate partition plate is placed inside the turbine casing at right angles to the rotational axis of the turbine wheel to divide the gas flow path into two in parallel. machine is proposed. Figure 6 is a side view of such an exhaust turbo supercharger as seen from the upstream end of the gas flow path, in which 1 is the turbine casing, 2 is a partition plate, and 3 and 4 are divided into two by partition plate 2. These are the gas flow paths on the primary side and the secondary side. V is a valve provided in one of the gas flow paths 4, and by opening and closing this valve V depending on the operating condition of the engine, there are two cases in which the exhaust gas flows only into the primary gas flow path 3, and a case in which the exhaust gas flows only into the primary gas flow path 3. A case where the gas flows through both the side and secondary side gas channels 3 and 4 is selected. FIG. 7 shows a partition plate 2 in which the turbine casing 1 is divided along a plane perpendicular to the rotational axis of a turbine wheel (not shown).
The partition plate 2 is made of a single iron plate formed in a spiral shape along the gas flow paths 3 and 4, and the partition plate 2 is a front view showing the arrangement state of the partition plate 2 when viewed along the gas flow paths 3 and 4. A downstream end portion 2a of the plate 2 is integrally connected to an upstream portion 2b located at the gas inflow passage opening on the upstream side to form an annular shape, and the inner circumferential edge of the downstream end portion 2a extends from the axial direction of the rotating shaft of the turbine wheel. As seen, the radius from the axis to the spiral outer circumferential wall of the turbine casing 1 is continuous to the merging space between the gas inflow channel inlet and the downstream end of the gas flow channel, where the radius rapidly increases.
しかしながら、以上述べたような従来の構成に
おいては、仕切板２の下流端部2a内周縁がター
ビンケーシング１のガス流路の合流空間部まで連
続し、この合流空間部における仕切板２の面積が
大きくなつており、かつ高温の排気ガスにさらさ
れるため、熱膨張が生じ、その熱膨張分が逃がす
箇所がない仕切板２は変形し、ガス流路３，４間
を仕切る仕切板としての機能が低下するという問
題を生じた。 However, in the conventional configuration as described above, the inner circumferential edge of the downstream end 2a of the partition plate 2 is continuous to the confluence space of the gas flow path of the turbine casing 1, and the area of the partition plate 2 in this confluence space is small. Due to its increased size and exposure to high-temperature exhaust gas, thermal expansion occurs, and the partition plate 2, which has no place for the thermal expansion to escape, deforms and functions as a partition plate that partitions the gas flow paths 3 and 4. This resulted in a problem of a decrease in
（発明の目的）
そこで本発明は、上述のように仕切板の下流端
部の内周縁がタービンケーシングのガス流路の合
流空間部まで連続している構成において、前記合
流空間部における仕切板が高温の排ガスにさらさ
れて熱膨張した場合の変形を防止しうる排気ター
ボ過給機を提供することを目的とする。(Object of the Invention) Therefore, the present invention provides a configuration in which the inner peripheral edge of the downstream end of the partition plate is continuous to the confluence space of the gas flow path of the turbine casing, as described above, in which the partition plate in the confluence space is It is an object of the present invention to provide an exhaust turbo supercharger that can prevent deformation when exposed to high-temperature exhaust gas and undergoes thermal expansion.
（発明の構成）
本発明は仕切板２の下流端部を、その外周縁が
最小半径部の渦巻状外周壁の接線方向に延びるよ
うにガス流路の合流空間部まで延出させるととも
に、この合流空間部における仕切板の下流端部の
外周縁を仕切板のガス流入路入口部にある上流部
分の内周縁より内方に位置させ、かつ、前記内周
縁と前記外周縁とを回転軸の径方向において所定
量離間させたことを特徴とする。(Structure of the Invention) The present invention extends the downstream end of the partition plate 2 to the merging space of the gas flow path so that its outer peripheral edge extends in the tangential direction of the spiral outer peripheral wall of the minimum radius part, and The outer circumferential edge of the downstream end of the partition plate in the merging space is located inwardly from the inner circumferential edge of the upstream portion of the partition plate at the gas inflow passage inlet, and the inner circumferential edge and the outer circumferential edge are aligned with each other around the rotation axis. It is characterized by being spaced apart by a predetermined amount in the radial direction.
（発明の効果）
このように仕切板の下流端部の外周縁を仕切板
のガス流入路入口部にある上流部分の内周縁から
離間させてこの間にギヤツプを設けておけば、ガ
ス流路の合流空間部において仕切板が高温の排気
ガスにさらされて熱膨張しても、この仕切板の径
方向の熱膨張は前記ギヤツプによつて吸収するこ
とができ、しかもこのギヤツプの存在により、仕
切板の下流端部が接線方向にも伸長することがで
きるから、これによつて仕切板の変形が阻止さ
れ、２つのガス流路を仕切るという仕切板として
の機能を完全に果すことができる。(Effect of the invention) If the outer circumferential edge of the downstream end of the partition plate is separated from the inner circumferential edge of the upstream portion of the partition plate at the inlet of the gas inflow path and a gap is provided between them, the gas flow path can be Even if the partition plate is exposed to high-temperature exhaust gas and thermally expands in the merging space, the radial thermal expansion of the partition plate can be absorbed by the gap. Since the downstream end of the plate can also extend in the tangential direction, this prevents the partition plate from deforming and allows it to fully perform its function as a partition plate to partition two gas flow paths.
（実施例）
以下本発明の一実施例について図面を参照して
詳細に説明する。(Example) An example of the present invention will be described in detail below with reference to the drawings.
第１図〜第３図は渦巻状の仕切板２がタービン
翼車を収納するタービンケーシング１内に配置さ
れて、２つの渦巻状のガス流路３，４が並列状に
形成されている状態を示す図で、第４図は仕切板
２の平面図である。タービンケーシング１はター
ビン翼車の回転軸線と直角な平面で分割された２
分割体として形成され、仕切板２はこれらの分割
体５，６の間に挟持された状態でタービンケーシ
ング１に結合されている。仕切板２の下流端部２
ａの内周縁は、回転軸の軸線方向からみて、軸心
からタービンケーシング１の渦巻状外周壁までの
半経が急増するガス流入路入口部とガス流入路下
流端部との合流空間部１４まで連続している。 Figures 1 to 3 show a state in which a spiral partition plate 2 is placed inside a turbine casing 1 that houses a turbine wheel, and two spiral gas flow paths 3 and 4 are formed in parallel. FIG. 4 is a plan view of the partition plate 2. FIG. The turbine casing 1 is divided into two parts along a plane perpendicular to the rotational axis of the turbine wheel.
The partition plate 2 is formed as a divided body, and is connected to the turbine casing 1 while being sandwiched between these divided bodies 5 and 6. Downstream end 2 of partition plate 2
The inner peripheral edge of a is a confluence space 14 between the gas inflow passage inlet and the downstream end of the gas inflow passage, where the half meridian from the axis to the spiral outer peripheral wall of the turbine casing 1 rapidly increases when viewed from the axial direction of the rotating shaft. It continues until.
仕切板２の下流端部２ａは、その外周縁７が最
小半径部の渦巻状外周壁の接線方向に延びるよう
に前記合流空間部１４まで延出されているととも
に、この合流空間部１４における仕切板２の下流
端部２ａの外周縁７は、仕切板２のガス流入路入
口部にある上流部分２ｂの内周縁１５よりも内方
に位置されている。そして、前記内周縁１５と前
記外周壁７とは、タービン翼車の回転軸の径方向
において所定量離間しており、そこにギヤツプ８
が形成されている。また下流端部２ａの先端には
回転軸線側に面する傾斜縁９が形成されている。 The downstream end 2a of the partition plate 2 extends to the merging space 14 such that its outer peripheral edge 7 extends in the tangential direction of the spiral outer peripheral wall of the minimum radius part, and the partition in this merging space 14 The outer circumferential edge 7 of the downstream end 2a of the plate 2 is located further inward than the inner circumferential edge 15 of the upstream portion 2b of the partition plate 2 at the gas inlet entrance. The inner circumferential edge 15 and the outer circumferential wall 7 are spaced apart by a predetermined distance in the radial direction of the rotating shaft of the turbine wheel, and a gap 8 is provided therebetween.
is formed. Further, an inclined edge 9 facing the rotation axis side is formed at the tip of the downstream end portion 2a.
一方、タービンケーシング１には、仕切板２の
先端の傾斜縁９に対してギヤツプ１０を隔てて対
向する傾斜面１１を備えたガイド部材１２が設け
られており、このガイド部材１２は、仕切板２の
下流端部２ａが仕切板２の熱膨張により伸長され
た場合に、仕切板２の先端の傾斜縁９をこのガイ
ド部材１２の傾斜面１１に当接させて仕切板２の
先端を、第５図に示すように、タービン翼車（図
示せず）から離れる方向に案内するように作用す
る。 On the other hand, the turbine casing 1 is provided with a guide member 12 having an inclined surface 11 that faces the inclined edge 9 at the tip of the partition plate 2 with a gap 10 in between. When the downstream end 2a of the partition plate 2 is expanded due to thermal expansion of the partition plate 2, the inclined edge 9 at the tip of the partition plate 2 is brought into contact with the inclined surface 11 of this guide member 12, and the tip of the partition plate 2 is As shown in FIG. 5, it acts to guide the blade away from the turbine wheel (not shown).
以上述べた構成によれば、仕切板２が高温の排
ガスにさらされて熱膨張した場合、その膨張は仕
切板２の下流端部２ａの外周縁７とガス流入路入
口部にある上流部分２ｂの内周縁１５との間に形
成されたギヤツプ８によつて吸収されるため、仕
切板２の変形を防止して常に仕切板２としての機
能を果すことが可能になる。また上述の実施例の
ように、ガイド部材１２を設けることにより、万
一仕切板２が変形した場合でも、その変形がター
ビン翼車側に向つて生じるのを阻止することがで
きる。 According to the configuration described above, when the partition plate 2 is exposed to high-temperature exhaust gas and thermally expands, the expansion is caused by the outer peripheral edge 7 of the downstream end 2a of the partition plate 2 and the upstream portion 2b at the gas inflow channel entrance. Since the partition plate 2 is absorbed by the gap 8 formed between the partition plate 2 and the inner circumferential edge 15 of the partition plate 2, deformation of the partition plate 2 is prevented and the partition plate 2 can always function as the partition plate 2. Moreover, by providing the guide member 12 as in the above-described embodiment, even if the partition plate 2 should be deformed, the deformation can be prevented from occurring toward the turbine blade wheel side.
なお、上記実施例ではガイド部材１２をタービ
ンケーシング１に設けたが、仕切板２に設けても
よい。 Although the guide member 12 is provided in the turbine casing 1 in the above embodiment, it may be provided in the partition plate 2.
第１図は本発明による排気ターボ過給機の一実
施例をタービンケーシングを半割状態にして示す
正面図、第２図および第３図はそれぞれ第１図の
−線および−線に沿う断面図、第４図は
その仕切板の平面図、第５図はそのガイド部材が
これに当接された仕切板の先端を案内する状態を
示す説明図、第６図は従来の排気ターボ過給機の
側面図、第７図は従来の排気ターボ過給機をその
タービンケーシングを半割状態として示す正面図
である。
１……タービンケーシング、２……仕切板、２
ａ……仕切板の下流端部、２ｂ……仕切板のガス
流入路入口部にある上流部分、３，４……ガス流
路、７……仕切板の下流端部の外周縁、８，１０
……ギヤツプ、９……仕切板の傾斜縁、１１……
ガイド部材の傾斜面、１２……ガイド部材。
FIG. 1 is a front view showing an embodiment of the exhaust turbocharger according to the present invention with the turbine casing cut in half, and FIGS. 2 and 3 are cross sections taken along lines - and - in FIG. 1, respectively. Figure 4 is a plan view of the partition plate, Figure 5 is an explanatory diagram showing the state in which the guide member guides the tip of the partition plate in contact with it, and Figure 6 is a conventional exhaust turbo supercharging system. FIG. 7 is a front view showing a conventional exhaust turbo supercharger with its turbine casing cut in half. 1... Turbine casing, 2... Partition plate, 2
a...Downstream end of the partition plate, 2b...Upstream portion of the partition plate at the inlet of the gas inflow path, 3, 4...Gas flow path, 7...Outer peripheral edge of the downstream end of the partition plate, 8, 10
...Gap, 9...Slanted edge of partition plate, 11...
Slanted surface of guide member, 12... Guide member.
Claims (1)
が前記タービン翼車の回転軸線方向に分割され、
この分割された半割状のタービンケーシング間に
それとは別体の渦巻状仕切板が挟持されて２つの
渦巻状ガス流路が並列に形成され、前記ガス流路
に沿つてみた場合の前記仕切板の下流端部の内周
縁が、前記回転軸の軸線方向からみて、軸心から
前記タービンケーシングの渦巻状外周壁までの半
径が急増するガス流入路入口部とガス流路下流端
部との合流空間部まで連続している排気ターボ過
給機において、 前記仕切板の下流端部を、その外周縁が最小半
径部の渦巻状外周壁の接線方向に延びるように前
記合流空間部まで延出させるとともに、この合流
空間部における前記仕切板の下流端部の外周縁を
前記仕切板のガス流入路入口部にある部分の内周
縁より内方に位置させ、かつ、前記内周縁と前記
外周縁とを前記回転軸の径方向において所定量離
間させたことを特徴とする排気ターボ過給機。[Scope of Claims] 1. A turbine casing housing a turbine wheel is divided in the rotational axis direction of the turbine wheel,
A separate spiral partition plate is sandwiched between the divided half turbine casings to form two spiral gas flow paths in parallel, and the partition when viewed along the gas flow path. The inner peripheral edge of the downstream end of the plate is defined by the gas inflow passage inlet part and the gas flow passage downstream end part, where the radius from the axis to the spiral outer peripheral wall of the turbine casing rapidly increases when viewed from the axial direction of the rotating shaft. In an exhaust turbo supercharger that is continuous to the merging space, the downstream end of the partition plate extends to the merging space so that its outer peripheral edge extends in a tangential direction of the spiral outer peripheral wall of the minimum radius portion. At the same time, the outer circumferential edge of the downstream end of the partition plate in this merging space is located inwardly from the inner circumferential edge of the portion of the partition plate at the gas inflow passage inlet, and the inner circumferential edge and the outer circumferential edge An exhaust turbo supercharger characterized in that: and are separated by a predetermined amount in a radial direction of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24155185A JPS62162731A (en) | 1985-10-30 | 1985-10-30 | Exhaust gas turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24155185A JPS62162731A (en) | 1985-10-30 | 1985-10-30 | Exhaust gas turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62162731A JPS62162731A (en) | 1987-07-18 |
| JPH0252092B2 true JPH0252092B2 (en) | 1990-11-09 |
Family
ID=17076034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24155185A Granted JPS62162731A (en) | 1985-10-30 | 1985-10-30 | Exhaust gas turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62162731A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112010004180T5 (en) * | 2009-10-30 | 2012-09-27 | Borgwarner Inc. | Turbine housing of an exhaust gas turbocharger |
| DE102010005492A1 (en) * | 2010-01-23 | 2011-07-28 | Bosch Mahle Turbo Systems GmbH & Co. KG, 70376 | volute |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4384821A (en) * | 1981-10-14 | 1983-05-24 | Wallace Murray Corporation | Free floating divider wall turbine housing |
| JPS5917228U (en) * | 1982-07-23 | 1984-02-02 | いすゞ自動車株式会社 | turbo supercharger |
-
1985
- 1985-10-30 JP JP24155185A patent/JPS62162731A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62162731A (en) | 1987-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4278397A (en) | Fluid flow machine | |
| US3829235A (en) | Turbocharger compressor with dual collector chambers | |
| CN109415970B (en) | Turbine housings, exhaust turbines and superchargers | |
| US5545004A (en) | Gas turbine engine with hot gas recirculation pocket | |
| CN108374699B (en) | Sheet metal turbine housing with dual shaft volute construction | |
| EP3354864A2 (en) | Sheet metal turbine housing with containment dampers | |
| CN108374697B (en) | Sheet metal turbine housings and associated turbocharger systems | |
| US11035254B2 (en) | Sheet metal turbine housing with cast core | |
| JPH052817B2 (en) | ||
| KR20070043941A (en) | Exhaust turbine supercharger | |
| JP6626975B2 (en) | Turbine housing, exhaust turbine, and supercharger | |
| JPS61192814A (en) | Exhaust turbo supercharger for internal combustion engines | |
| JP7099625B2 (en) | Turbine housing and turbocharger | |
| JPH09242505A (en) | Turbine structure | |
| JPH0252092B2 (en) | ||
| US4143994A (en) | Turbine housing for centrifugal turbosupercharger | |
| CN113454320B (en) | Turbine housing and turbocharger | |
| JPS5827061Y2 (en) | turbo supercharger | |
| JP7571138B2 (en) | Centering device for centering a turbine housing, turbo system including a centering device, and method for centering a turbine housing - Patents.com | |
| US9011083B2 (en) | Seal arrangement for a gas turbine | |
| JPS6020598B2 (en) | Centrifugal compressor for gas turbine | |
| JP7743728B2 (en) | Turbines and turbochargers | |
| JP7300908B2 (en) | Turbine housing and turbocharger | |
| JP7761157B2 (en) | turbine | |
| JP2515764B2 (en) | Tarbocharger |