JPH01130013A - Supercharger of internal combustion engine - Google Patents
Supercharger of internal combustion engineInfo
- Publication number
- JPH01130013A JPH01130013A JP62286599A JP28659987A JPH01130013A JP H01130013 A JPH01130013 A JP H01130013A JP 62286599 A JP62286599 A JP 62286599A JP 28659987 A JP28659987 A JP 28659987A JP H01130013 A JPH01130013 A JP H01130013A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- power turbine
- turbine
- supercharger
- turbo
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 abstract description 6
- 239000010425 asbestos Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 4
- 230000005855 radiation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
- F02B41/02—Engines with prolonged expansion
- F02B41/10—Engines with prolonged expansion in exhaust turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、内燃機関の過給装置、詳しくは排気エネルギ
をパワータービンで回収して出力を増加させるパワータ
ービン付内燃機関（以下、ターボコンパウンドエンジン
と云う）の過給装置に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a supercharging device for an internal combustion engine, and more specifically to an internal combustion engine with a power turbine (hereinafter referred to as a turbo compound) that increases output by recovering exhaust energy with a power turbine. This relates to supercharging devices for engines.
〈従来の技術〉
内燃機関の排気エネルギを有効に活用するために、排気
ターボ過給機に加えてパワータービンを装着して排気エ
ネルギを回収し、ｊ（１力を向上させるようにしたター
ボコンパウンドエンジンが知られている。<Conventional technology> In order to effectively utilize the exhaust energy of an internal combustion engine, a power turbine is installed in addition to an exhaust turbo supercharger to recover the exhaust energy. The engine is known.
〈発明が解決しようとする問題点〉
ところが、このような従来のターボコンパウンドエンジ
ンでは、排気ターボ過給機のタービン出口と排気エネル
ギを回収するパワータービンの入口とを結ぶ排気通路は
、排気の抵抗を小さくすべく大径に設計しているのでそ
の表面からの放熱量が大きいために、パワータービンに
よる排気エネルギの回収効率を充分に高くすることがで
きないという問題点があった。<Problems to be Solved by the Invention> However, in such conventional turbo compound engines, the exhaust passage connecting the turbine outlet of the exhaust turbo supercharger and the inlet of the power turbine that recovers exhaust energy has a high resistance to exhaust gas. Since the exhaust gas is designed to have a large diameter in order to reduce the amount of heat, the amount of heat radiated from its surface is large, resulting in the problem that the exhaust energy recovery efficiency of the power turbine cannot be sufficiently increased.
本発明は、このような従来の問題点を解決するためにな
されたものであり、排気ターボ過給機のタービン出口か
ら排気エネルギを回収すφパワータービンの人口に至る
排気通路からの放熱を防止してパワータービンによる排
気エネルギの回収効率を向上させることを目的としてい
る。The present invention has been made to solve these conventional problems, and prevents heat radiation from the exhaust passage leading to the φ power turbine that recovers exhaust energy from the turbine outlet of the exhaust turbo supercharger. The purpose is to improve the exhaust energy recovery efficiency of the power turbine.
〈問題点を解決するための手段〉
上記目的を達成するために本発明では、排気ターボ過給
機のタービンからマフラに至る排気通路にパワータービ
ンを介装することにより、該パワータービンの出力軸と
機関とを結合して排気エネルギの回収効率を増大させる
ようにした内燃機関の過給装置において、前記排気ター
ボ過給機のタービン出口とパワータービンの入口とを結
ぶ排気通路を断熱管で構成したことを特徴としている。<Means for Solving the Problems> In order to achieve the above object, the present invention provides a power turbine that is interposed in the exhaust passage from the turbine of the exhaust turbocharger to the muffler, so that the output shaft of the power turbine In the supercharging system for an internal combustion engine, which increases the recovery efficiency of exhaust energy by combining the exhaust turbo supercharger and the engine, an exhaust passage connecting the turbine outlet of the exhaust turbo supercharger and the inlet of the power turbine is configured with an insulated pipe. It is characterized by what it did.
〈作用〉
断る構成としているために、排気ターボ過給機のタービ
ン出口とパワータービンの入口とを結ぶ排気通路からの
放熱が防止でき、パワータービンによって回収される排
気エネルギを増加させることができる。<Operation> Since the configuration is such that heat is not radiated from the exhaust passage connecting the turbine outlet of the exhaust turbo supercharger and the inlet of the power turbine, it is possible to increase the exhaust energy recovered by the power turbine.
〈実施例〉
以下に本発明の実施例を図面に基づいて詳細に説明する
。<Example> Examples of the present invention will be described in detail below based on the drawings.
第１図は本発明に係る内燃機関の過給装置の一実施例を
示し、第２図は第１図のＡ−Ａ断面図を示している。FIG. 1 shows an embodiment of a supercharging device for an internal combustion engine according to the present invention, and FIG. 2 shows a sectional view taken along the line AA in FIG.
図において、ターボコンパウンドエンジン１は、排気タ
ーボ過給機２のタービン２ａから図示しないマフラに至
る排気管４にパワータービン３を介装して構成され、前
記パワータービン３の出力軸を第１のギヤトレイン５、
連続可変減速装置６及び第２のギヤトレイン７を介して
エンジンｌのクランク軸８に結合して排気エネルギの回
収効率を増大させるようにしている。９はクラッチハウ
ジングである。In the figure, a turbo compound engine 1 is configured with a power turbine 3 interposed in an exhaust pipe 4 extending from a turbine 2a of an exhaust turbo supercharger 2 to a muffler (not shown), and the output shaft of the power turbine 3 is connected to a first gear train 5,
It is coupled to the crankshaft 8 of the engine 1 via a continuously variable speed reducer 6 and a second gear train 7 to increase exhaust energy recovery efficiency. 9 is a clutch housing.
又、前記排気ターボ過給機２のタービン出口２ｂとパワ
ータービン３の入口３ａとを結ぶ排気通路４ａからの放
熱による温度降下は１０〜２０℃にも達するために、本
発明では排気通路４ａを以下に述べるような断熱管で構
成することにより、パワータービンのエネルギ回収効率
を向上させている。Further, since the temperature drop due to heat radiation from the exhaust passage 4a connecting the turbine outlet 2b of the exhaust turbocharger 2 and the inlet 3a of the power turbine 3 reaches as much as 10 to 20°C, in the present invention, the exhaust passage 4a is The power turbine's energy recovery efficiency is improved by constructing it with insulated pipes as described below.
即ち、実施例では第２図に示すように、熱伝導率の低い
セラミックスで構成した外筒４ｂ及び内筒４ｃの間にセ
ラミックスファイバー、石綿等のポーラス物質４ｄを充
填して排気通路４ａを構成することにより、その断熱性
を高くしている。That is, in the embodiment, as shown in FIG. 2, an exhaust passage 4a is formed by filling a porous substance 4d such as ceramic fiber or asbestos between an outer cylinder 4b and an inner cylinder 4c made of ceramics with low thermal conductivity. This increases its insulation properties.
従って、排気ターボ過給機２から流出した排気が外気に
よって冷却されることなくパワータービン３に供給され
るために、パワータービン３による排気エネルギの回収
効率が増大する。Therefore, the exhaust gas flowing out from the exhaust turbo supercharger 2 is supplied to the power turbine 3 without being cooled by outside air, so that the exhaust energy recovery efficiency by the power turbine 3 increases.
尚、実施例ではセラミックスで構成した外筒４ｂと内筒
４Ｃとの間にポーラス物質４ｃを充填して排気通路４ａ
の断熱性を向上させているが、排気通路４ａ９具体構成
は実施例に限定されるものではなく、例えば、セラミッ
クス管のみを使用し、又は、ポーラス物質の充填に代え
てこれを空洞として軽量化を図ることもできる。In the embodiment, a porous substance 4c is filled between an outer cylinder 4b and an inner cylinder 4C made of ceramic to form an exhaust passage 4a.
However, the specific configuration of the exhaust passage 4a9 is not limited to the embodiment. For example, it may be possible to use only a ceramic tube, or to make it a cavity instead of filling it with a porous material to reduce weight. It is also possible to aim for
〈発明の効果〉
以上説明したように本発明によれば、排気ターボ過給機
のタービン出口とパワータービンの入口とを結ぶ排気通
路を断熱管で構成しているために、排気通路からの排気
エネルギの放熱を実用上無視できる程度に小さくするこ
とができるので、パワータービンによる排気エネルギの
回収効率を向上させることができる。<Effects of the Invention> As explained above, according to the present invention, since the exhaust passage connecting the turbine outlet of the exhaust turbo supercharger and the inlet of the power turbine is configured with an insulated pipe, the exhaust gas from the exhaust passage is Since the heat dissipation of energy can be reduced to a practically negligible level, the efficiency of exhaust energy recovery by the power turbine can be improved.
第１図は本発明の一実施例を示す部分断面図、第２図は
排気管通路のＡ−Ａ断面図である。
１・・・ターボコンパウンドエンジン
２・・・排気ターボ過給機 ２ａ・・・タービン２ｂ
・・・タービン出口 ３・・・パワータービン３
ａ・・・タービン人口 ４ａ・・・排気通路５．
７・・・ギヤトレイン ６・・・連続可変減速装置８
・・・クランク軸FIG. 1 is a partial cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line A-A of the exhaust pipe passage. 1...Turbo compound engine 2...Exhaust turbo supercharger 2a...Turbine 2b
...Turbine outlet 3...Power turbine 3
a... Turbine population 4a... Exhaust passage 5.
7... Gear train 6... Continuously variable speed reduction device 8
...crankshaft
Claims (1)
にパワータービンを介装することにより、該パワーター
ビンの出力軸と機関とを結合して排気エネルギの回収効
率を増大させるようにした内燃機関の過給装置において
、前記排気ターボ過給機のタービン出口とパワータービ
ンの入口とを結ぶ排気通路を断熱管で構成したことを特
徴とする内燃機関の過給装置。An internal combustion engine in which the output shaft of the power turbine and the engine are connected to increase the exhaust energy recovery efficiency by interposing a power turbine in the exhaust passage from the turbine of the exhaust turbo supercharger to the muffler. 1. A supercharging device for an internal combustion engine, characterized in that an exhaust passage connecting a turbine outlet of the exhaust turbo supercharger and an inlet of a power turbine is formed of a heat insulating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286599A JPH01130013A (en) | 1987-11-13 | 1987-11-13 | Supercharger of internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62286599A JPH01130013A (en) | 1987-11-13 | 1987-11-13 | Supercharger of internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01130013A true JPH01130013A (en) | 1989-05-23 |
| JPH0577849B2 JPH0577849B2 (en) | 1993-10-27 |
Family
ID=17706501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62286599A Granted JPH01130013A (en) | 1987-11-13 | 1987-11-13 | Supercharger of internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01130013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006017019A (en) * | 2004-06-30 | 2006-01-19 | Seven Seven:Kk | Muffler cutter and accessory provided on muffler cutter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5371736A (en) * | 1976-12-08 | 1978-06-26 | Suzuki Motor Co Ltd | Muffler for internal combustion engine |
| JPS61171816A (en) * | 1985-01-25 | 1986-08-02 | Yanmar Diesel Engine Co Ltd | Exhaust pipe device for multi-cylinder diesel engine with supercharger |
| JPS629096A (en) * | 1986-06-19 | 1987-01-17 | 三菱重工業株式会社 | Heat-insulating structure |
-
1987
- 1987-11-13 JP JP62286599A patent/JPH01130013A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5371736A (en) * | 1976-12-08 | 1978-06-26 | Suzuki Motor Co Ltd | Muffler for internal combustion engine |
| JPS61171816A (en) * | 1985-01-25 | 1986-08-02 | Yanmar Diesel Engine Co Ltd | Exhaust pipe device for multi-cylinder diesel engine with supercharger |
| JPS629096A (en) * | 1986-06-19 | 1987-01-17 | 三菱重工業株式会社 | Heat-insulating structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006017019A (en) * | 2004-06-30 | 2006-01-19 | Seven Seven:Kk | Muffler cutter and accessory provided on muffler cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0577849B2 (en) | 1993-10-27 |
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