JPH08240156A - Exhaust gas recirculation device for engine with supercharger - Google Patents
Exhaust gas recirculation device for engine with superchargerInfo
- Publication number
- JPH08240156A JPH08240156A JP7068887A JP6888795A JPH08240156A JP H08240156 A JPH08240156 A JP H08240156A JP 7068887 A JP7068887 A JP 7068887A JP 6888795 A JP6888795 A JP 6888795A JP H08240156 A JPH08240156 A JP H08240156A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- passage
- engine
- turbine
- gas recirculation
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/08—EGR systems specially adapted for supercharged engines for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Control Of Turbines (AREA)
- Supercharger (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、過給機付エンジンの排
気ガス再循環装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas recirculation system for a supercharged engine.
【０００２】[0002]
【従来の技術】過給機が取り付けられていない自動車の
エンジンにおいては、エンジンの排気通路から排出され
る排気ガスの一部を吸気通路に戻し、ＮＯｘを低減する
排気ガス再循環（ＥＧＲ）が行われている。2. Description of the Related Art In an engine of an automobile to which a supercharger is not attached, exhaust gas recirculation (EGR) that reduces a portion of exhaust gas discharged from the engine exhaust passage to the intake passage and reduces NOx is performed. Has been done.
【０００３】ＮＯｘを効果的に低減するためにはＥＧＲ
ガス量を増すことであるが、過給機付のエンジンにおい
ては、排気圧よりも吸気圧の方が高いので排気圧を上げ
る必要がある。To effectively reduce NOx, EGR
To increase the amount of gas, in an engine with a supercharger, the intake pressure is higher than the exhaust pressure, so it is necessary to increase the exhaust pressure.
【０００４】そのために、従来では、図６で示すような
排気ガス再循環装置が提供されている。すなわち、図６
において、１はエンジン、２は前記エンジン１の吸気側
のインテークマニホールド、３は前記エンジン１の排気
側のエキゾーストマニホールドである。４は過給機であ
り、排気タービン４ａと、この排気タービン４ａによっ
て回転するコンプレッサ４ｂとから構成されている。前
記過給機４の排気タービン４ａの入口に前記エキゾース
トマニホールド３と排気通路５を介して接続されてい
る。Therefore, conventionally, an exhaust gas recirculation device as shown in FIG. 6 has been provided. That is, FIG.
In the figure, 1 is an engine, 2 is an intake manifold on the intake side of the engine 1, and 3 is an exhaust manifold on the exhaust side of the engine 1. A supercharger 4 is composed of an exhaust turbine 4a and a compressor 4b rotated by the exhaust turbine 4a. The inlet of the exhaust turbine 4 a of the supercharger 4 is connected to the exhaust manifold 3 via an exhaust passage 5.
【０００５】前記過給機４のコンプレッサ４ｂは吸気通
路７を介してインタクーラ６の上流側に接続されてお
り、前記インタクーラ６の下流側とエンジン１のインテ
ークマニホールド２とを吸気通路８によって接続してい
る。The compressor 4b of the supercharger 4 is connected to the upstream side of the intercooler 6 via an intake passage 7, and the downstream side of the intercooler 6 is connected to the intake manifold 2 of the engine 1 by an intake passage 8. ing.
【０００６】前記排気通路５と前記インタクーラ６の下
流側の吸気通路８とに排気還流通路９が接続され、この
排気還流通路９には排気ガス混合バルブ１１（ＥＧＲバ
ルブ）が設けられ、前記排気タービン４ａの出口に接続
されている排気管１０には排気圧コントロールバルブ１
２が設けられている。An exhaust gas recirculation passage 9 is connected to the exhaust passage 5 and an intake passage 8 on the downstream side of the intercooler 6, and an exhaust gas mixing valve 11 (EGR valve) is provided in the exhaust gas recirculation passage 9 to exhaust the exhaust gas. The exhaust pipe 10 connected to the outlet of the turbine 4a has an exhaust pressure control valve 1
2 are provided.
【０００７】上記の構成において、コントローラ１７の
指令によって排気ガス混合バルブ１１を開口してＥＧＲ
を実施するときにＥＧＲ量を確保するために、排気圧コ
ントロールバルブ１２の開度を絞り、排気タービン４ａ
に排圧をかけて排気通路５の排気圧を上げでいる。In the above structure, the exhaust gas mixing valve 11 is opened according to a command from the controller 17, and the EGR is performed.
In order to secure the EGR amount when performing the engine, the opening degree of the exhaust pressure control valve 12 is reduced to
The exhaust pressure is applied to the exhaust passage 5 to raise the exhaust pressure.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、上記の
装置では、排気圧をあまり上げると燃費，煙が悪化する
ため、エンジンの回転数及び負荷に応じて排気圧を制御
しなければならない。ところが、従来では過給機付のエ
ンジンにおいて、回転数及び負荷に応じて排気圧を制御
する手段がなく、ＮＯｘを効果的に低減するためににＥ
ＧＲガス量を増量することが困難であった。However, in the above-mentioned device, if the exhaust pressure is raised too much, fuel consumption and smoke deteriorate, so the exhaust pressure must be controlled according to the engine speed and load. However, in a conventional engine with a supercharger, there is no means for controlling the exhaust pressure according to the rotational speed and the load, and in order to effectively reduce NOx, E
It was difficult to increase the amount of GR gas.
【０００９】本発明の目的は、エンジンの回転数及び負
荷に応じて排気圧を制御可能とし、燃費，煙の問題を解
消した過給機付エンジンの排気ガス再循環装置を提供す
ることである。It is an object of the present invention to provide an exhaust gas recirculation system for a supercharged engine which can control the exhaust pressure according to the engine speed and load and solve the problems of fuel consumption and smoke. .
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めの本発明の要旨は、排気タービンと、この排気タービ
ンによって回転するコンプレッサとからなる過給機と、
エンジンの排気側と前記排気タービンとを接続した第１
排気通路と、前記コンプレッサとエンジンの吸気側とを
接続した吸気通路と、前記第１排気通路と前記吸気通路
とに接続した排気還流通路と、この排気還流通路に配置
した排気ガス混合バルブとを備えた排気ガス再循環装置
において、エンジンの出力軸と歯車連繋したパワーター
ビンと、前記過給機の排気タービンの出口と前記パワー
タービンの入口とを接続した第２排気通路と、前記パワ
ータービンの出口から排気管に接続される第３排気通路
と、前記第２排気通路と第３排気通路との間に接続さ
れ、エンジンの回転数及び負荷に応じて開閉制御される
バイパス弁とを備えたものである。The gist of the present invention for achieving the above object is to provide a supercharger comprising an exhaust turbine and a compressor rotated by the exhaust turbine,
First connecting the exhaust side of the engine and the exhaust turbine
An exhaust passage, an intake passage connecting the compressor to an intake side of the engine, an exhaust gas recirculation passage connected to the first exhaust passage and the intake passage, and an exhaust gas mixing valve arranged in the exhaust gas recirculation passage. In an exhaust gas recirculation device provided, a power turbine gear-connected to an output shaft of an engine, a second exhaust passage connecting an outlet of the exhaust turbine of the supercharger and an inlet of the power turbine, and a power turbine of the power turbine. A third exhaust passage connected from the outlet to the exhaust pipe, and a bypass valve connected between the second exhaust passage and the third exhaust passage and opened / closed according to the engine speed and load are provided. It is a thing.
【００１１】上記パワータービンにエンジンの回転数及
び負荷に応じて開度が制御される可変ノズルを備えても
よい。The power turbine may be provided with a variable nozzle whose opening is controlled according to the engine speed and load.
【００１２】さらに、本発明は、排気タービンと、この
排気タービンによって回転するコンプレッサとからなる
過給機と、エンジンの排気側と前記排気タービンとを接
続した第１排気通路と、前記コンプレッサとエンジンの
吸気側とを接続した吸気通路と、前記第１排気通路と前
記吸気通路とに接続した排気還流通路と、この排気還流
通路に配置した排気ガス混合バルブとを備えた排気ガス
再循環装置において、エンジンの出力軸と歯車連繋し、
エンジンの回転数及び負荷に応じて開度が制御される可
変ノズルを備えているパワータービンと、前記過給機の
排気タービンの出口と前記パワータービンの入口とを接
続した第２排気通路と、前記パワータービンの出口から
排気管に接続される第３排気通路とを備えたものであ
る。Furthermore, the present invention provides a supercharger comprising an exhaust turbine and a compressor rotated by the exhaust turbine, a first exhaust passage connecting an exhaust side of an engine and the exhaust turbine, the compressor and the engine. An exhaust gas recirculation device including an intake passage connected to the intake side of the exhaust gas, an exhaust gas recirculation passage connected to the first exhaust passage and the intake passage, and an exhaust gas mixing valve arranged in the exhaust gas recirculation passage. , Linked to the output shaft of the engine and gears,
A power turbine having a variable nozzle whose opening is controlled according to the engine speed and load; a second exhaust passage connecting an outlet of the exhaust turbine of the supercharger and an inlet of the power turbine; And a third exhaust passage connected to an exhaust pipe from the outlet of the power turbine.
【００１３】[0013]
【作用】上記の構成により、エンジンの回転数および負
荷の大小に応じて第２排気通路と第３排気通路との間の
バイパス弁を開閉制御し、ＥＧＲ実施時において排気圧
を上げ、ＥＧＲガス量を確保してＮＯｘの低減を図り、
かつパワータービンによって排気エネルギーを回収して
燃費を改善する。With the above construction, the bypass valve between the second exhaust passage and the third exhaust passage is controlled to be opened / closed in accordance with the engine speed and the magnitude of the load, and the exhaust pressure is increased during the EGR operation to reduce the EGR gas. Secure a sufficient amount to reduce NOx,
In addition, the power turbine recovers exhaust energy to improve fuel efficiency.
【００１４】また、エンジンの回転数および負荷の大小
に応じてパワータービンの可変ノズルを制御して、ＥＧ
Ｒ実施時において排気圧を上げ、ＥＧＲガス量を確保し
てＮＯｘの低減を図り、かつパワータービンによって排
気エネルギーを回収して燃費を改善する。Further, the variable nozzle of the power turbine is controlled according to the engine speed and the magnitude of the load, and the EG
At the time of performing R, the exhaust pressure is increased to secure the EGR gas amount to reduce NOx, and the exhaust energy is recovered by the power turbine to improve the fuel economy.
【００１５】[0015]
【実施例】以下本発明の実施例を図面に基づいて説明す
る。図１は本発明の第１実施例であり、１はエンジン、
２は前記エンジン１の吸気側のインテークマニホール
ド、３は前記エンジン１の排気側のエキゾーストマニホ
ールドである。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, in which 1 is an engine,
Reference numeral 2 is an intake manifold on the intake side of the engine 1, and 3 is an exhaust manifold on the exhaust side of the engine 1.
【００１６】４は過給機であり、排気タービン４ａと、
この排気タービン４ａによって回転するコンプレッサ４
ｂとから構成されている。前記排気タービン４ａの入口
に前記エキゾーストマニホールド３と第１排気通路５を
介して接続されている。Reference numeral 4 denotes a supercharger, which includes an exhaust turbine 4a,
Compressor 4 rotated by this exhaust turbine 4a
b and. The exhaust manifold 3 is connected to the inlet of the exhaust turbine 4 a through the first exhaust passage 5.
【００１７】前記コンプレッサ４ｂは吸気通路７を介し
てインタクーラ６の上流側に接続されている。また、前
記インタクーラ６の下流側とエンジン１のインテークマ
ニホールド２とを吸気通路８によって接続している。The compressor 4b is connected to the upstream side of the intercooler 6 via an intake passage 7. An intake passage 8 connects the downstream side of the intercooler 6 and the intake manifold 2 of the engine 1.
【００１８】前記第１排気通路５と前記インタクーラ６
の下流側の吸気通路８とに排気還流通路９が接続され、
この排気還流通路９には排気ガス混合バルブ１１が設け
られている。The first exhaust passage 5 and the intercooler 6
An exhaust gas recirculation passage 9 is connected to an intake passage 8 on the downstream side of
An exhaust gas mixing valve 11 is provided in the exhaust gas recirculation passage 9.
【００１９】さらに、負荷機構（駆動輪）と接続するエ
ンジン１の出力軸２４と歯車２６で連繋したパワーター
ビン２１を備え、前記排気タービン４ａの出口と前記パ
ワータービン２１の入口とを第２排気通路２０で接続
し、前記パワータービン２１の出口には排気管に接続さ
れる第３排気通路２２が接続され、前記第２排気通路２
０と第３排気通路２２との間には前記パワータービン２
１をパスしたバイパス弁２３が接続されている。尚、前
記パワータービン２１はエンジン１の回転数及び負荷に
応じて開度が制御される可変ノズルを備えいてもよい。Further, a power turbine 21 connected to an output shaft 24 of the engine 1 connected to a load mechanism (driving wheel) by a gear 26 is provided, and the outlet of the exhaust turbine 4a and the inlet of the power turbine 21 are connected to the second exhaust. A third exhaust passage 22 connected to an exhaust pipe is connected to the outlet of the power turbine 21, and the second exhaust passage 2 is connected to the second exhaust passage 2.
The power turbine 2 is provided between 0 and the third exhaust passage 22.
The bypass valve 23 that passes 1 is connected. The power turbine 21 may include a variable nozzle whose opening is controlled according to the rotation speed and load of the engine 1.
【００２０】前記排気ガス混合バルブ１１は必要に応じ
てコントローラ１７によってＥＧＲの実施及び遮断する
よう開閉制御され、また、前記バイパス弁２３はエンジ
ン１の回転数及び負荷に応じて開閉制御されるようにな
っている。The exhaust gas mixing valve 11 is controlled to be opened and closed by the controller 17 so that the EGR is performed and shut off, and the bypass valve 23 is controlled to be opened and closed according to the rotation speed and load of the engine 1. It has become.
【００２１】上記構成の第１実施例では、図２のエンジ
ンの回転数と負荷（トルク）の関係の運転マップで示す
ように、Ａ領域では排気ガス混合バルブ１１を開き、バ
イパス弁２３を閉じる。これにより、排気タービン４ａ
に排圧がかかり、第１排気通路５の排気圧を上げ、ＥＧ
Ｒガス量を確保してＮＯｘの低減が図られる。この時、
パワータービン２１はエンジン１の出力軸２４よって回
転駆動されているため、排気エネルギーを回収して燃費
を改善する。In the first embodiment having the above structure, as shown in the operation map of the relationship between the engine speed and the load (torque) in FIG. 2, the exhaust gas mixing valve 11 is opened and the bypass valve 23 is closed in the A region. . As a result, the exhaust turbine 4a
Is exhausted to increase the exhaust pressure in the first exhaust passage 5,
The amount of R gas is secured to reduce NOx. This time,
Since the power turbine 21 is rotationally driven by the output shaft 24 of the engine 1, it recovers exhaust energy and improves fuel efficiency.
【００２２】また、図２の運転マップで示すＢ領域で
は、排気ガス混合バルブ１１を閉じ、バイパス弁２３を
閉じる。これにより、煙の悪化を防ぎ、パワータービン
２１で排気エネルギーを回収して燃費を大幅に改善す
る。Further, in the region B shown in the operation map of FIG. 2, the exhaust gas mixing valve 11 is closed and the bypass valve 23 is closed. As a result, the deterioration of smoke is prevented, the exhaust energy is recovered by the power turbine 21, and the fuel efficiency is significantly improved.
【００２３】さらに、図２の運転マップで示すＣ領域で
は、排気ガス混合バルブ１１を閉じ、バイパス弁２３を
開く。これにより、排気タービン４ａからの排気ガスは
パワータービン２１をパスして第２排気通路２０から直
ちに第３排気通路２２に排出されるため、排気タービン
４ａの排圧が下がり、排気タービン４ａの回転が上昇
し、コンプレッサ４ｂによる空気量が増量され、低速高
負荷運転時における燃費と煙が改善される。Further, in the region C shown in the operation map of FIG. 2, the exhaust gas mixing valve 11 is closed and the bypass valve 23 is opened. As a result, the exhaust gas from the exhaust turbine 4a passes through the power turbine 21 and is immediately discharged from the second exhaust passage 20 to the third exhaust passage 22, so that the exhaust pressure of the exhaust turbine 4a decreases and the rotation of the exhaust turbine 4a is reduced. Is increased, the amount of air by the compressor 4b is increased, and fuel efficiency and smoke during low-speed high-load operation are improved.
【００２４】図３は本発明の第２実施例である。この第
２実施例は前記第１実施例におけるバイパス弁２３を廃
止し、パワータービン２１は図５で示すロータ２１Ｔの
回転を可変とする可変ノズル２１Ｎを備え、この可変ノ
ズル２１Ｎの開度をエンジン１の回転数及び負荷に応じ
てコントローラ１７により制御するようにした構成であ
る。FIG. 3 shows a second embodiment of the present invention. In the second embodiment, the bypass valve 23 in the first embodiment is abolished, and the power turbine 21 is provided with a variable nozzle 21N that makes the rotation of the rotor 21T shown in FIG. 5 variable, and the opening degree of the variable nozzle 21N is set to the engine. The controller 17 controls the number of rotations and the load.
【００２５】上記構成の第２実施例では、図４のエンジ
ンの回転数と負荷（トルク）の関係の運転マップで示す
ように、Ａ領域では排気ガス混合バルブ１１を開き、パ
ワータービン２１の可変ノズル２１Ｎの開度を小さめに
制御する。これにより、排気タービン４ａに必要な排圧
をかけて、必要なＥＧＲガス量を確保し、ＮＯｘを低減
する。In the second embodiment having the above-mentioned structure, as shown in the operation map of the relationship between the engine speed and the load (torque) in FIG. 4, the exhaust gas mixing valve 11 is opened in the region A and the power turbine 21 is changed. The opening degree of the nozzle 21N is controlled to be small. As a result, the exhaust pressure required for the exhaust turbine 4a is applied to secure the required amount of EGR gas and reduce NOx.
【００２６】また、図２の運転マップで示すＢ領域で
は、排気ガス混合バルブ１１を閉じ、パワータービン２
１の可変ノズル２１Ｎの開度を中程度に制御する。これ
により、煙の悪化を防ぎ、パワータービン２１で排気エ
ネルギーを回収して燃費を大幅に改善する。In the region B shown in the operation map of FIG. 2, the exhaust gas mixing valve 11 is closed and the power turbine 2
The opening degree of the variable nozzle 21N of No. 1 is controlled to an intermediate level. As a result, the deterioration of smoke is prevented, the exhaust energy is recovered by the power turbine 21, and the fuel efficiency is significantly improved.
【００２７】さらに、図２の運転マップで示すＣ領域で
は、排気ガス混合バルブ１１を閉じ、パワータービン２
１の可変ノズル２１Ｎの開度を大きく制御する。これに
より、パワータービン２１の回転が上がり、排気タービ
ン４ａの排圧が下がるため、排気タービン４ａの回転が
上昇し、コンプレッサ４ｂによる空気量が増量され、低
速高負荷運転時における燃費と煙が改善される。Further, in the region C shown in the operation map of FIG. 2, the exhaust gas mixing valve 11 is closed and the power turbine 2
The opening degree of the variable nozzle 21N of No. 1 is largely controlled. As a result, the rotation of the power turbine 21 is increased and the exhaust pressure of the exhaust turbine 4a is decreased, so that the rotation of the exhaust turbine 4a is increased and the amount of air by the compressor 4b is increased to improve fuel consumption and smoke during low speed and high load operation. To be done.
【００２８】尚、上記の実施例では、コンプレッサ４ｂ
は吸気通路７を介してインタクーラ６の上流側に接続さ
れ、また、前記インタクーラ６の下流側とエンジン１の
インテークマニホールド２とを吸気通路８によって接続
した構成例であるが、インタクーラ６を配置しないで、
コンプレッサ４ｂとエンジンの吸気側とを直接接続した
ものであってもよい。In the above embodiment, the compressor 4b
Is an example in which the upstream side of the intercooler 6 is connected via an intake passage 7, and the downstream side of the intercooler 6 and the intake manifold 2 of the engine 1 are connected by an intake passage 8, but the intercooler 6 is not arranged. so,
The compressor 4b may be directly connected to the intake side of the engine.
【００２９】[0029]
【発明の効果】以上のように本発明は、過給機付のエン
ジンにおいて、回転数及び負荷に応じて、ＮＯｘを効果
的に低減する必要があるときには排気圧を上げてＥＧＲ
ガス量を増量させ、かつパワータービンで排気エネルギ
ーを回収し、また、低速高負荷領域は必要な空気量に増
量することが可能にしたものであるから、ＮＯｘを効果
的に低減すると共に、かつ燃費と煙の改善を実現するこ
とができる効果を有している。As described above, according to the present invention, in an engine with a supercharger, when it is necessary to effectively reduce NOx in accordance with the rotation speed and the load, the exhaust pressure is increased to increase the EGR.
Since the amount of gas is increased, exhaust energy is recovered by the power turbine, and the low-speed high-load region can be increased to the required amount of air, NOx can be effectively reduced, and It has the effect of improving fuel efficiency and smoke.
【図１】本発明装置の第１実施例の系統図FIG. 1 is a system diagram of a first embodiment of the device of the present invention.
【図２】第１実施例の運転マップFIG. 2 is an operation map of the first embodiment.
【図３】本発明装置の第２実施例の系統図FIG. 3 is a system diagram of a second embodiment of the device of the present invention.
【図４】第１実施例の運転マップFIG. 4 is an operation map of the first embodiment.
【図５】可変ノズルを備えワータービンの内部構造図FIG. 5 is an internal structure diagram of a water turbine equipped with a variable nozzle.
【図６】従来装置の系統図FIG. 6 is a system diagram of a conventional device.
１ エンジン ２ インテークマニホールド ３ エキゾーストマニホールド ４ 過給機 ４ａ 排気タービン ４ｂ コンプレッサ ５ 第１排気通路 ６ インタクーラ ７ 吸気通路 ８ 吸気通路 ９ 排気還流通路 １０ 吸気管 １１ 排気ガス混合バルブ １７ コントローラ ２０ 第２排気通路 ２１ パワータービン ２１Ｔ ロータ ２１Ｎ 可変ノズル ２２ 第３排気通路 ２３ バイパス弁 ２４ 出力軸 ２５ 負荷（駆動輪） ２６ 歯車 1 engine 2 intake manifold 3 exhaust manifold 4 supercharger 4a exhaust turbine 4b compressor 5 first exhaust passage 6 intercooler 7 intake passage 8 intake passage 9 exhaust recirculation passage 10 intake pipe 11 exhaust gas mixing valve 17 controller 20 second exhaust passage 21 Power turbine 21T Rotor 21N Variable nozzle 22 Third exhaust passage 23 Bypass valve 24 Output shaft 25 Load (driving wheel) 26 Gear
Claims (3)
って回転するコンプレッサとからなる過給機と、エンジ
ンの排気側と前記排気タービンとを接続した第１排気通
路と、前記コンプレッサとエンジンの吸気側とを接続し
た吸気通路と、前記第１排気通路と前記吸気通路とに接
続した排気還流通路と、この排気還流通路に配置した排
気ガス混合バルブとを備えた排気ガス再循環装置におい
て、エンジンの出力軸と歯車連繋したパワータービン
と、前記過給機の排気タービンの出口と前記パワーター
ビンの入口とを接続した第２排気通路と、前記パワータ
ービンの出口から排気管に接続される第３排気通路と、
前記第２排気通路と第３排気通路との間に接続され、エ
ンジンの回転数及び負荷に応じて開閉制御されるバイパ
ス弁とを備えたことを特徴とする過給機付エンジンの排
気ガス再循環装置。1. A supercharger comprising an exhaust turbine and a compressor rotated by the exhaust turbine, a first exhaust passage connecting an exhaust side of an engine and the exhaust turbine, an intake side of the compressor and the engine. An exhaust gas recirculation device including an intake gas passage connected to the exhaust gas recirculation passage, an exhaust gas recirculation passage connected to the first exhaust passage and the intake air passage, and an exhaust gas recirculation device arranged in the exhaust gas recirculation passage. A power turbine connected to a shaft and a gear, a second exhaust passage connecting an outlet of the exhaust turbine of the supercharger and an inlet of the power turbine, and a third exhaust passage connected to an exhaust pipe from the outlet of the power turbine. When,
An exhaust gas recirculation system for a supercharged engine, comprising: a bypass valve connected between the second exhaust passage and the third exhaust passage, the bypass valve being opened and closed according to the engine speed and load. Circulator.
及び負荷に応じて開度が制御される可変ノズルを備えて
いる請求項１記載の過給機付エンジンの排気ガス再循環
装置。2. The exhaust gas recirculation apparatus for a supercharged engine according to claim 1, wherein the power turbine is provided with a variable nozzle whose opening is controlled according to the engine speed and load.
って回転するコンプレッサとからなる過給機と、エンジ
ンの排気側と前記排気タービンとを接続した第１排気通
路と、前記コンプレッサとエンジンの吸気側とを接続し
た吸気通路と、前記第１排気通路と前記吸気通路とに接
続した排気還流通路と、この排気還流通路に配置した排
気ガス混合バルブとを備えた排気ガス再循環装置におい
て、エンジンの出力軸と歯車連繋し、エンジンの回転数
及び負荷に応じて開度が制御される可変ノズルを備えて
いるパワータービンと、前記過給機の排気タービンの出
口と前記パワータービンの入口とを接続した第２排気通
路と、前記パワータービンの出口から排気管に接続され
る第３排気通路とを備えたことを特徴とする過給機付エ
ンジンの排気ガス再循環装置。3. A supercharger comprising an exhaust turbine and a compressor rotated by the exhaust turbine, a first exhaust passage connecting the exhaust side of the engine and the exhaust turbine, the compressor and the intake side of the engine. An exhaust gas recirculation device including an intake gas passage connected to the exhaust gas recirculation passage, an exhaust gas recirculation passage connected to the first exhaust passage and the intake air passage, and an exhaust gas recirculation device arranged in the exhaust gas recirculation passage. A power turbine connected to a shaft and a gear and provided with a variable nozzle whose opening is controlled according to the engine speed and load, and an outlet of the exhaust turbine of the supercharger and an inlet of the power turbine were connected. An exhaust gas recirculation system for a supercharged engine, comprising a second exhaust passage and a third exhaust passage connected to an exhaust pipe from the outlet of the power turbine. Circulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7068887A JPH08240156A (en) | 1995-03-03 | 1995-03-03 | Exhaust gas recirculation device for engine with supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7068887A JPH08240156A (en) | 1995-03-03 | 1995-03-03 | Exhaust gas recirculation device for engine with supercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08240156A true JPH08240156A (en) | 1996-09-17 |
Family
ID=13386625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7068887A Pending JPH08240156A (en) | 1995-03-03 | 1995-03-03 | Exhaust gas recirculation device for engine with supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08240156A (en) |
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|---|---|---|---|---|
| WO2006072339A1 (en) | 2004-12-24 | 2006-07-13 | Daimlerchrysler Ag | Method for operating an internal combustion engine with an exhaust gas turbo charger and a useful turbine |
| EP2699784A1 (en) * | 2011-04-21 | 2014-02-26 | Mack Trucks, Inc. | Power system with turbine bypass and method of operating a power system |
| US20140060045A1 (en) * | 2012-08-31 | 2014-03-06 | GM Global Technology Operations LLC | Turbo compounding hybrid generator powertrain |
| JP2014080897A (en) * | 2012-10-16 | 2014-05-08 | Mazda Motor Corp | Engine with turbo supercharger |
| JP2014152763A (en) * | 2013-02-13 | 2014-08-25 | Mitsubishi Heavy Ind Ltd | Exhaust gas energy recovery device of engine |
| JP2014224468A (en) * | 2013-05-15 | 2014-12-04 | 日野自動車株式会社 | Internal combustion engine |
| CN104500219A (en) * | 2014-12-24 | 2015-04-08 | 王崎文 | Piston turbine composite engine |
| EP2868891A1 (en) * | 2013-08-28 | 2015-05-06 | Deere & Company | A power system including a variable geometry turbocompound turbine |
| FR3025250A1 (en) * | 2014-08-28 | 2016-03-04 | Peugeot Citroen Automobiles Sa | SUPER-POWERED MOTORIZATION ASSEMBLY EQUIPPED WITH EXHAUST GAS MECHANISMS |
-
1995
- 1995-03-03 JP JP7068887A patent/JPH08240156A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006072339A1 (en) | 2004-12-24 | 2006-07-13 | Daimlerchrysler Ag | Method for operating an internal combustion engine with an exhaust gas turbo charger and a useful turbine |
| EP2699784A4 (en) * | 2011-04-21 | 2014-10-15 | Mack Trucks | Power system with turbine bypass and method of operating a power system |
| EP2699784A1 (en) * | 2011-04-21 | 2014-02-26 | Mack Trucks, Inc. | Power system with turbine bypass and method of operating a power system |
| US9932884B2 (en) | 2011-04-21 | 2018-04-03 | Volvo Lastvagnar Ab | Power system with turbine bypass and method of operating a power system |
| CN103649510A (en) * | 2011-04-21 | 2014-03-19 | 马克卡车公司 | Power system with turbine bypass and method of operating a power system |
| CN103649510B (en) * | 2011-04-21 | 2015-07-22 | 马克卡车公司 | Power system with turbine bypass and method of operating a power system |
| US9108628B2 (en) * | 2012-08-31 | 2015-08-18 | GM Global Technology Operations LLC | Turbo compounding hybrid generator powertrain |
| CN103670693A (en) * | 2012-08-31 | 2014-03-26 | 通用汽车环球科技运作有限责任公司 | Turbo compounding hybrid generator powertrain |
| US20140060045A1 (en) * | 2012-08-31 | 2014-03-06 | GM Global Technology Operations LLC | Turbo compounding hybrid generator powertrain |
| JP2014080897A (en) * | 2012-10-16 | 2014-05-08 | Mazda Motor Corp | Engine with turbo supercharger |
| JP2014152763A (en) * | 2013-02-13 | 2014-08-25 | Mitsubishi Heavy Ind Ltd | Exhaust gas energy recovery device of engine |
| JP2014224468A (en) * | 2013-05-15 | 2014-12-04 | 日野自動車株式会社 | Internal combustion engine |
| EP2868891A1 (en) * | 2013-08-28 | 2015-05-06 | Deere & Company | A power system including a variable geometry turbocompound turbine |
| US9534534B2 (en) | 2013-08-28 | 2017-01-03 | Deere & Company | Power system including a variable geometry turbocompound turbine |
| FR3025250A1 (en) * | 2014-08-28 | 2016-03-04 | Peugeot Citroen Automobiles Sa | SUPER-POWERED MOTORIZATION ASSEMBLY EQUIPPED WITH EXHAUST GAS MECHANISMS |
| CN104500219A (en) * | 2014-12-24 | 2015-04-08 | 王崎文 | Piston turbine composite engine |
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