JPH01178723A - Cooling structure for turbocharger - Google Patents
Cooling structure for turbochargerInfo
- Publication number
- JPH01178723A JPH01178723A JP33590687A JP33590687A JPH01178723A JP H01178723 A JPH01178723 A JP H01178723A JP 33590687 A JP33590687 A JP 33590687A JP 33590687 A JP33590687 A JP 33590687A JP H01178723 A JPH01178723 A JP H01178723A
- Authority
- JP
- Japan
- Prior art keywords
- turbine
- bearing
- cooling
- case
- turbine case
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 40
- 239000003921 oil Substances 0.000 description 26
- 238000009835 boiling Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、ターボチャージャーの冷却構造に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a cooling structure for a turbocharger.
従来の技術
ターボチャージャーにおいては、排気ガスの熱を受ける
タービンケース部分が最も高温となる。In conventional turbochargers, the portion of the turbine case that receives the heat of the exhaust gases is the hottest.
従来、このタービンケースの冷却は水冷却によって行な
っており、例えば、実開昭６０−１５９８３６号公報に
は、タービンケースの周りに冷却水室を設けて、この氷
室内へ冷却水を循環させるようにしたものが開示されて
いる。他方、この種クーボチャージャーにおいては、タ
ービン翼車軸の軸受部へエンジン本体の潤滑油を導いて
、この軸受部分の潤滑を行なうようにしている。また、
このような軸受部の潤滑構造において、その軸受部内に
導いた潤滑油をタービンケース側の側壁部分に沿わせて
流すことによって、高温となる側壁部分の冷却をも行な
わしめるものがある（実公昭５８−２３９４１号公報）
６
発明が解決しようとする問題点
上記のように、ターボチャージャーにおいては、
′排気ガスの熱を受けるタービンケース部分が最も高
温となるため、この部分を効率よく冷却することが必要
である。しかるに、タービンケースに冷却氷室を設けた
水冷却方式のものにおいては、水の一般的な性質として
比熱が高い半面沸点が低く、タービンケースのような高
温部に用いると、油等に比較して低温で沸騰することか
ら冷却効率が損なわれ易いという問題がある。また、軸
受部を潤滑するだめの冷却油をタービンケースの側壁部
分へ導くものにおいては、潤滑油とタービンケース部分
との接触面積が小さく、単にその側壁部分を冷却するの
みであるから、やし１り充分な冷却を行なうことはでき
ないものである。Conventionally, this turbine case has been cooled by water cooling. For example, in Japanese Utility Model Application Publication No. 159836/1983, a cooling water chamber is provided around the turbine case and the cooling water is circulated into this ice chamber. What has been done is disclosed. On the other hand, in this type of turbocharger, lubricating oil from the engine body is guided to the bearing part of the turbine blade axle to lubricate this bearing part. Also,
In some bearing lubrication structures, the lubricating oil introduced into the bearing is allowed to flow along the side wall on the turbine case side, thereby cooling the side wall, which becomes hot (Jikkosho). 58-23941)
6 Problems to be solved by the invention As mentioned above, in a turbocharger,
'The part of the turbine case that receives the heat of the exhaust gas is at the highest temperature, so it is necessary to cool this part efficiently. However, in water-cooled systems with a cooling ice chamber installed in the turbine case, the general properties of water include high specific heat and low boiling point, so when used in high-temperature areas such as the turbine case, it has a lower boiling point than oil. There is a problem in that cooling efficiency tends to be impaired because it boils at low temperatures. In addition, in the case where the cooling oil that lubricates the bearing is guided to the side wall of the turbine case, the contact area between the lubricating oil and the turbine case is small and the side wall is simply cooled. However, sufficient cooling cannot be achieved.
また、」−記のように、軸受部分を潤滑油で冷却しター
ビンケース部分を冷却水によって冷却するものでは、冷
却水と潤滑油の配管が夫々必要となり、配管系統が２系
統となることから構造的にも複雑で高価となる欠点があ
る。In addition, as shown in "-", in the case where the bearing part is cooled with lubricating oil and the turbine case part is cooled with cooling water, separate piping for cooling water and lubricating oil is required, resulting in two piping systems. It also has the disadvantage of being structurally complex and expensive.
この発明は、そのような従来の欠点を解消して、高温部
であるタービンケース部分の冷却を、冷却液の沸騰を生
ずることなく高温による冷却が可能で、かつ、冷却系統
を１系統として構造を簡素化できるようにしたターボチ
ャージャーの冷却構造を提供するものである。The present invention eliminates such conventional drawbacks, allows cooling of the turbine case part, which is a high temperature part, at high temperature without causing boiling of the coolant, and has a structure in which the cooling system is integrated into one system. The present invention provides a cooling structure for a turbocharger that can simplify the process.
問題点を解決するための手段
そして、上記の目的を達成するため、この発明では、タ
ービン翼車（６）を収納するタービンケース（７）に、
少なくとも前記タービン翼車（６）の外周を囲むように
して冷却油室（１７）を形成し、更にこの冷却油室（１
７）とタービン翼車軸（５）の軸受部とを連絡通路で結
んでなることを特徴とする。Means for Solving the Problems And in order to achieve the above object, the present invention includes a turbine case (7) that houses the turbine wheel (6),
A cooling oil chamber (17) is formed so as to surround at least the outer periphery of the turbine wheel (6), and the cooling oil chamber (17)
7) and the bearing portion of the turbine blade axle (5) are connected by a communication passage.
作 用
上記この発明の構成によれば、タービンケース（７）と
軸受部が同一の冷却油によって冷却若しくは潤滑される
とともに、タービンケース（７）部分は沸点の高い油に
よって冷却されることから、沸騰による冷却効率の低下
を招くことなく、効率よく冷却を行なうことができる。Effects According to the above configuration of the present invention, the turbine case (7) and the bearing portion are cooled or lubricated by the same cooling oil, and the turbine case (7) portion is cooled by the oil having a high boiling point. Cooling can be performed efficiently without reducing cooling efficiency due to boiling.
実施例
図面は、この発明に従って製作されたターボチャージャ
ーの実施例を示している。DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of a turbocharger made in accordance with the invention.
図において、（１）は筒状の軸受ケースであり、この軸
受ゲース（１）の内部に軸受ボス（２）が一体に形成さ
れている。軸受ボス（２）に形成された長平方向の軸受
穴内には、軸支筒（３）が挿入され、この軸支筒（３）
内に、その両端部に設けた軸受メタル（４） （４）
を介して、タービン翼車軸（５）が回転自在に軸支され
ている。軸受ケース（１）より突出するタービン翼車軸
（５）の一端には、タービン翼車（６）が、他端にはブ
ロワ翼車（７）が設けられている。更に、軸受ケース（
１）の前記タービン翼車（６）側の端部に、このタービ
ン翼車（６）を囲むようにして、タービンケース（７）
が一体に形成されている。このタービンケース（７）の
内部には、タービン翼車（６）の外周に沿ってスクロー
ル状の排気ガス通路（８）が形成されるとともに、前記
翼車軸（５）の延長方向の外側面に突出して排気ガス出
口（９）が開口されている。タービンケース（７）の下
端に延設した取りイ」け台（１５）の下面に排気人＋１
１ （１６）が開口される。他方、軸受ケース（１）の
ブロワ翼車（７）側の端部には、フランジ（１０）が設
けられるとともに、このフランジ（１０）に、ブロワ翼
車（７）を囲むプロワケース（１１）が取り付けられて
、ポルｌ−（１２）によって固定されている。このプロ
ワケース（１１）内には、ブロワ翼車（７）周りに空気
出口通路（１３）が形成されるとともに、翼車軸（５）
の延長方向に空気人口（１４）が開口されている。In the figure, (1) is a cylindrical bearing case, and a bearing boss (2) is integrally formed inside this bearing gauge (1). A shaft support cylinder (3) is inserted into the bearing hole formed in the bearing boss (2) in the longitudinal direction, and this shaft support cylinder (3)
Bearing metal (4) provided at both ends inside (4)
A turbine blade axle (5) is rotatably supported via the shaft. A turbine blade wheel (6) is provided at one end of a turbine blade axle (5) protruding from the bearing case (1), and a blower wheel (7) is provided at the other end. Furthermore, the bearing case (
A turbine case (7) is installed at the end of the turbine wheel (6) side of 1) so as to surround the turbine wheel (6).
are integrally formed. Inside the turbine case (7), a scroll-shaped exhaust gas passage (8) is formed along the outer periphery of the turbine wheel (6), and on the outer surface of the blade wheel (5) in the extending direction. An exhaust gas outlet (9) is opened in a protruding manner. Exhaust man + 1 is attached to the underside of the holder (15) extended to the lower end of the turbine case (7).
1 (16) is opened. On the other hand, a flange (10) is provided at the end of the bearing case (1) on the blower wheel (7) side, and a blower case (11) surrounding the blower wheel (7) is provided on this flange (10). attached and secured by pol l-(12). Inside this blower case (11), an air outlet passage (13) is formed around the blower impeller (7), and an air outlet passage (13) is formed around the blower impeller (7).
An air vent (14) is opened in the extending direction.
上記の構造において、タービンケース（７）には、ター
ビン翼車（６）の外周側に設けた排気ガス連絡（８ンの
外側及び両側面部を囲むようにして、断面半円状の冷却
油室（１７）が、タービン翼車（６）の回転方向に沿っ
て一体に形成されている。タービンケース（７）の上面
に、冷却用油の人口（Ｉ８）が開口されている。他方、
冷却油室（７）の軸受ケース（］）側の底面が、連絡穴
（１９）を介して、このタービンケース（７）と軸受ケ
ース（］）との境部に形成した冷却油溜り （２０）へ
連通されている。更に、この冷却油溜り（２０）の底面
より下向きに冷却油連絡通路（２１）が形成されて、こ
の通路（２］）を介して、前記軸支筒（３）外周面と軸
受ホス（２）内周面との間の隙間（２２）へ連通されて
いる。この隙間（２２）内に入った／ｌｌ＋ ｌ、ｔ、
軸支筒（３）外周の溝から、この軸支筒（３）内側の軸
受ノクル（４，） （４）部分に入り、この部分をＸ
Ｗ＋滑した後、軸受ボス（２）の底面に形成した吐出穴
（２３）より軸受ケース（１）の底部側に排出されるよ
うになっている。更にこの軸受ケース（１）のタービン
ケース（７）側の端部と、そのタービンケース（７）内
の冷却油室（１７）底部との間を連通ずるような連通穴
（２４）が形成されている。すなわち、前記入口穴（１
８）より冷却油室（］７）内に入った油は、この冷却油
室（１７）内を流下してタービンケース（７）を冷却し
て下方へ落ちるか、一部が前記冷却油溜り （２０）か
ら軸受ケース（１）内に入り、その軸受部分を潤滑した
後、軸受ケース（１）の底面より冷却油室（１７）の油
と合流して、０；１記取り（＝Ｊり台（１５）部分に開
口した出Ｄ （２５）より、エンジン本体のオイルパン
側へ還流されるようになっている。In the above structure, the turbine case (7) has a cooling oil chamber (17) with a semicircular cross section surrounding the outside and both side surfaces of the exhaust gas communication (8) provided on the outer peripheral side of the turbine impeller (6). ) is integrally formed along the rotational direction of the turbine impeller (6).A cooling oil hole (I8) is opened on the upper surface of the turbine case (7).On the other hand,
The bottom surface of the cooling oil chamber (7) on the bearing case (]) side forms a cooling oil reservoir (20 ). Furthermore, a cooling oil communication passage (21) is formed downward from the bottom surface of the cooling oil reservoir (20), and the outer peripheral surface of the shaft support cylinder (3) and the bearing host (2) are connected through this passage (2). ) is communicated with the gap (22) between the inner peripheral surface and the inner peripheral surface. Entered this gap (22) /ll+ l, t,
Enter the bearing nockle (4,) (4) part inside this shaft support cylinder (3) from the groove on the outer periphery of the shaft support cylinder (3), and turn this part into
After sliding W+, it is discharged to the bottom side of the bearing case (1) through a discharge hole (23) formed on the bottom surface of the bearing boss (2). Furthermore, a communication hole (24) is formed to communicate between the end of the bearing case (1) on the turbine case (7) side and the bottom of the cooling oil chamber (17) in the turbine case (7). ing. That is, the entrance hole (1
8) The oil that has entered the cooling oil chamber (7) flows down inside the cooling oil chamber (17) and cools the turbine case (7) and falls downward, or some of the oil flows into the cooling oil sump. (20) enters the bearing case (1), and after lubricating the bearing part, it merges with the oil in the cooling oil chamber (17) from the bottom of the bearing case (1), taking the 0; 1 mark (=J The oil is refluxed to the oil pan side of the engine body through an outlet D (25) that opens in the mount (15).
なお、図面で示すように、この実施例では、タービンケ
ース（７）は軸受ケース（１）と一体に形成されている
。従来においては、タービンケース（７）を軸受ケース
（］）とは別体に形成して取りイ＼Ｊけるのか−・般で
あり、それだけ部品数が増えるとともに、両者の接合部
分の加工を行なわなければならない等の不都合があった
が、そのように一体に形成することによって、かかる不
都合がなく、安価でかつコンバクＩ・に構成できるとい
う利点がある。Note that, as shown in the drawings, in this embodiment, the turbine case (7) is formed integrally with the bearing case (1). Conventionally, it has been possible to form the turbine case (7) separately from the bearing case () and remove it, which increases the number of parts and requires machining of the joint between the two. However, by integrally forming it in this way, there is an advantage that there is no such inconvenience and that it can be constructed at low cost and in a compact structure.
発明の効果
以」二のように、この発明においては、最も温度の高い
タービンケース部分を油冷却によって冷却するようにし
ており、そのため、従来のような冷却水で冷却するもの
に比較して、その沸点が２００〜３００° Ｃと高く、
沸騰による冷却効率の低下を招くことなく効率よく高温
部の冷却を行なうことができる。また、このタービンケ
ース内の冷却油室を軸受部へ連通させていることから、
同時にこの軸受部分の冷却をも行なうことができ、ター
ビンケースを水冷却により軸受部を油冷却によって冷却
する従来のものに比較して、配管系統が１系統で済み、
構造が簡素化されて安価に製作できるものである。Effects of the Invention As described in 2., in this invention, the part of the turbine case with the highest temperature is cooled by oil cooling. Its boiling point is as high as 200-300°C,
The high temperature section can be efficiently cooled without reducing cooling efficiency due to boiling. In addition, since the cooling oil chamber inside the turbine case is communicated with the bearing,
At the same time, this bearing part can be cooled, and compared to conventional systems in which the turbine case is cooled by water and the bearing part is cooled by oil, only one piping system is required.
The structure is simplified and can be manufactured at low cost.
図面は、この発明の実施例を示すターボチャージャーの
縦断面図である。
（１）・・・軸受ケース、（５）・タービン翼車、（６
）・・タービン翼車、（７）・タービンケース、（１７
）・・・冷却油室、
（２１）・・・軸受部分との連絡ｉｌ路。The drawing is a longitudinal sectional view of a turbocharger showing an embodiment of the present invention. (1) Bearing case, (5) Turbine wheel, (6
)...Turbine impeller, (7), Turbine case, (17
)... Cooling oil chamber, (21)... Communication path with the bearing part.
Claims (1)
前記タービン翼車の外周を囲むようにして冷却油室を形
成し、更にこの冷却油室とタービン翼車軸の軸受部とを
連絡通路で結んであることを特徴とするターボチャージ
ャーの冷却構造。A cooling oil chamber is formed in a turbine case that houses a turbine wheel, so as to surround at least the outer periphery of the turbine wheel, and the cooling oil chamber and a bearing portion of the turbine blade axle are connected by a communication passage. The cooling structure of the turbocharger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335906A JP2533346B2 (en) | 1987-12-29 | 1987-12-29 | Cooling structure of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62335906A JP2533346B2 (en) | 1987-12-29 | 1987-12-29 | Cooling structure of turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01178723A true JPH01178723A (en) | 1989-07-14 |
| JP2533346B2 JP2533346B2 (en) | 1996-09-11 |
Family
ID=18293692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62335906A Expired - Lifetime JP2533346B2 (en) | 1987-12-29 | 1987-12-29 | Cooling structure of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533346B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7025579B2 (en) * | 2001-10-16 | 2006-04-11 | Innovative Turbo Systems Corporation | Bearing system for high-speed rotating machinery |
| FR2950933A1 (en) * | 2009-10-07 | 2011-04-08 | Peugeot Citroen Automobiles Sa | Turbocharger for use in supercharged combustion engine, has casing equipped of mounting flange that comprises cavity for circulation of coolant and has support surface cooperating with corresponding surface of exhaust collector |
| KR101038369B1 (en) * | 2010-11-29 | 2011-06-01 | 현대마린테크 주식회사 | A hydrocooling turbine for turbo charger |
| KR20120099617A (en) * | 2009-06-29 | 2012-09-11 | 보르그워너 인코퍼레이티드 | Multi-stage turbocharger arrangement |
| CN102803678A (en) * | 2009-06-29 | 2012-11-28 | 博格华纳公司 | Multi-stage turbocharger arrangement |
| US8365526B2 (en) * | 2006-03-15 | 2013-02-05 | Man Truck & Bus Ag | Vehicle or stationary power plant having a turbocharged internal combustion engine as a drive source |
| US20130142465A1 (en) * | 2010-08-24 | 2013-06-06 | Borgwarner Inc. | Bearing housing of an exhaust-gas turbocharger |
| CN104712419A (en) * | 2013-12-17 | 2015-06-17 | 现代自动车株式会社 | Engine system |
| US20150292354A1 (en) * | 2014-04-15 | 2015-10-15 | Toyota Jidosha Kabushiki Kaisha | Turbine housing and turbocharger |
| JP2017053300A (en) * | 2015-09-11 | 2017-03-16 | 株式会社豊田自動織機 | Supercharging device for engine |
| KR20170040402A (en) * | 2015-10-02 | 2017-04-13 | 현대자동차주식회사 | The exhaust system of the vehicle engine |
| EP3363997A1 (en) * | 2017-02-20 | 2018-08-22 | Honeywell International Inc. | Turbocharger assembly |
| WO2020100251A1 (en) * | 2018-11-15 | 2020-05-22 | 三菱重工エンジン＆ターボチャージャ株式会社 | Centrifugal compressor and turbocharger equipped with centrifugal compressor |
| CN114215637A (en) * | 2021-12-30 | 2022-03-22 | 康跃科技(山东)有限公司 | Electric auxiliary booster cryogenic cooling structure |
| WO2022208839A1 (en) * | 2021-04-01 | 2022-10-06 | 三菱重工マリンマシナリ株式会社 | Supercharger |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010037969B4 (en) * | 2010-10-05 | 2023-01-12 | Ford Global Technologies, Llc. | Internal combustion engine with liquid-cooled turbine and method for cooling the turbine |
| US8621865B2 (en) | 2010-05-04 | 2014-01-07 | Ford Global Technologies, Llc | Internal combustion engine with liquid-cooled turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55165925U (en) * | 1979-05-16 | 1980-11-28 | ||
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| JPS6034527U (en) * | 1983-08-12 | 1985-03-09 | トヨタ自動車株式会社 | Turbocharger bearing cooling system |
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| JPS60159836U (en) * | 1984-03-31 | 1985-10-24 | ヤンマーディーゼル株式会社 | Water-cooled turbocharger |
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| US20130142465A1 (en) * | 2010-08-24 | 2013-06-06 | Borgwarner Inc. | Bearing housing of an exhaust-gas turbocharger |
| US8757885B2 (en) * | 2010-08-24 | 2014-06-24 | Borgwarner Inc. | Bearing housing of an exhaust-gas turbocharger |
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| US10487726B2 (en) | 2017-02-20 | 2019-11-26 | Garrett Transportation I Inc. | Turbocharger assembly |
| WO2020100251A1 (en) * | 2018-11-15 | 2020-05-22 | 三菱重工エンジン＆ターボチャージャ株式会社 | Centrifugal compressor and turbocharger equipped with centrifugal compressor |
| CN112424481A (en) * | 2018-11-15 | 2021-02-26 | 三菱重工发动机和增压器株式会社 | Centrifugal compressor and turbocharger provided with same |
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| WO2022208839A1 (en) * | 2021-04-01 | 2022-10-06 | 三菱重工マリンマシナリ株式会社 | Supercharger |
| CN114215637A (en) * | 2021-12-30 | 2022-03-22 | 康跃科技(山东)有限公司 | Electric auxiliary booster cryogenic cooling structure |
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