JP2000027715A - Egr device for diesel engine having supercharger - Google Patents

Egr device for diesel engine having supercharger

Info

Publication number
JP2000027715A
JP2000027715A JP10199102A JP19910298A JP2000027715A JP 2000027715 A JP2000027715 A JP 2000027715A JP 10199102 A JP10199102 A JP 10199102A JP 19910298 A JP19910298 A JP 19910298A JP 2000027715 A JP2000027715 A JP 2000027715A
Authority
JP
Japan
Prior art keywords
condensed water
diesel engine
pipe
egr
egr device
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
Application number
JP10199102A
Other languages
Japanese (ja)
Inventor
Satoru Maeda
悟 前田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Priority to JP10199102A priority Critical patent/JP2000027715A/en
Publication of JP2000027715A publication Critical patent/JP2000027715A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02EGR systems specially adapted for supercharged engines
    • F02M26/04EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05High 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent corrosion of an intake manifold caused by water condensed in an EGR passage to which a heat exchanger is attached. SOLUTION: An exhaust manifold 3a is connected to an intake manifold 2a by means of an EGR pipe 5. A condensed water discharge port 9 is formed on the EGR pipe 5, on its downstream side of a heat exchanger 6. A drain pipe connected to the condensed water discharge port 9 is then connected to an exhaust pipe 3b. In the EGR pipe 5, a downstream side of the heat exchanger 6 has a diameter smaller than an upstream side. The upstream side of the larger diameter is coaxially arranged with the small diameter downstream side. A clearance therebetween is closed by a wall body perpendicular to the direction of a flow passage, to provide a stepped structure.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、排気ガスの圧力で
タービンを回転させ、そのタービンよって吸気圧を増加
させる過給機を備えた過給機付きディーゼルエンジンの
EGR装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an EGR device for a turbocharged diesel engine provided with a supercharger for rotating a turbine by the pressure of exhaust gas and increasing the intake pressure by the turbine.

【0002】[0002]

【従来の技術】ディーゼルエンジンでは、排気ガスを吸
気側に還流するためのEGR通路を設け、窒素酸化物の
排出を低減する試みが実施されている。又そのEGR通
路に熱交換器を取り付けてEGRガスを冷却する試みが
あるが、熱交換機内で発生した凝縮水が排気ガス内の硫
黄酸化物と反応し、それによって生成された硫酸で吸気
系が腐食されることを防止すべく、例えば特開平7−2
43354号公報に記載のように、熱交換器に貯水部を
設け、その貯水部に圧電素子駆動部を取り付けたり、特
開平7−269417号公報に記載のように、EGR通
路の一部をガス導入管と排気ガス排出管とでV字状の通
路を形成し、ガス導入管と排ガス排出管との間にタンク
を配設し、凝縮水をタンク内に貯留すると共に、一定量
溜まったら排出する技術が提案されている。
2. Description of the Related Art In diesel engines, attempts have been made to reduce the emission of nitrogen oxides by providing an EGR passage for recirculating exhaust gas to an intake side. Attempts have been made to cool the EGR gas by attaching a heat exchanger to the EGR passage. However, condensed water generated in the heat exchanger reacts with sulfur oxides in the exhaust gas, and sulfuric acid generated by the reaction causes sulfuric acid generated by the reaction. For example, Japanese Patent Application Laid-Open No. 7-2
As described in JP-A-43354, a water storage section is provided in a heat exchanger, and a piezoelectric element driving section is attached to the water storage section. As described in JP-A-7-269417, a part of an EGR passage is made of gas. A V-shaped passage is formed by the introduction pipe and the exhaust gas discharge pipe, a tank is arranged between the gas introduction pipe and the exhaust gas discharge pipe, and the condensed water is stored in the tank and discharged when a certain amount is accumulated. A technology to do this has been proposed.

【0003】[0003]

【発明が解決しようとする課題】特開平8−26941
7号公報に記載の技術は、管路がV状に折り曲がってい
るので、ガスの通過抵抗が大きく、EGRガスの還流が
阻害される。又、特開平7−243354号公報に記載
のものは、霧化された凝縮水が排気ガスと一緒に下流側
に送られるが、その下流側にて再度液化すれば、管路内
を腐食させてしまう。更に、制御装置が必要であるし、
そうなると故障する可能性もある。本発明は、特に過給
機が付設されたエンジンにおいて、上記従来技術の問題
点を改善し、管路内における凝縮水の滞留をなくし、管
路の腐食を防止できるEGR装置を提供する。
Problems to be Solved by the Invention Japanese Patent Application Laid-Open No. 8-26941
In the technique described in Japanese Patent Publication No. 7, since the pipe is bent in a V shape, the gas passage resistance is large, and the recirculation of the EGR gas is hindered. Further, in the method described in Japanese Patent Application Laid-Open No. Hei 7-243354, atomized condensed water is sent to the downstream side together with the exhaust gas. Would. In addition, a control device is required,
In that case, there is a possibility of failure. The present invention provides an EGR device which can solve the above-mentioned problems of the prior art, eliminate stagnation of condensed water in a pipeline, and prevent corrosion of the pipeline, particularly in an engine provided with a supercharger.

【0004】[0004]

【課題を解決するための手段】本発明は、EGR機能に
影響を与えることなく、EGR流路内に発生した凝縮水
を速やかに排出する過給機付きディーゼルエンジンのE
GR装置であって、その構成は、排気経路における過給
機取り付け部位の上流位置と吸気経路における過給機取
り付け位置より下流部位とを還流路で連通し、その還流
路に熱交換器を設けると共に、還流路の熱交換器より下
流部位に凝縮水排出口を設けたことにある。そして前記
凝縮水排出口の直後に当たる還流路の内周壁に、流路方
向と直交する壁体を設けたり、大径の上流側と小径の下
流側とを同軸配置し、両者の隙間を流路方向と直交する
面で閉塞することで、還流路の内周に壁体を設けたりで
きる。又、凝縮水排出口は、排気管に接続したり大気に
開放したり、凝縮水排出口にバルブを設けたりすること
ができる。
SUMMARY OF THE INVENTION The present invention relates to a diesel engine with a supercharger for quickly discharging condensed water generated in an EGR passage without affecting an EGR function.
The GR device is configured such that an upstream position of a turbocharger mounting portion in an exhaust path and a downstream portion of the turbocharger mounting position in an intake path communicate with a return path, and a heat exchanger is provided in the return path. In addition, a condensed water discharge port is provided at a position downstream of the heat exchanger in the reflux passage. A wall orthogonal to the flow path direction is provided on the inner peripheral wall of the recirculation path immediately after the condensed water discharge port, or a large-diameter upstream side and a small-diameter downstream side are coaxially arranged, and a gap between the two flows through the flow path. By closing with a surface orthogonal to the direction, a wall body can be provided on the inner periphery of the return path. Further, the condensed water discharge port can be connected to an exhaust pipe, opened to the atmosphere, or provided with a valve at the condensed water discharge port.

【0005】[0005]

【発明の実施の形態】本発明に係る過給機付きディーゼ
ルエンジンのEGR装置を、その実施の態様について図
面に基づき説明する。図1において、1はエンジン、2
aはそのエンジン1に付設されているインテークマニホ
ールド、3aは同じく前記エンジン1に付設されている
エキゾーストマニホールドである。4は過給機であっ
て、この過給機4は、前記インテークマニホールド2a
に吸気管2bを連結して構成される吸気経路2と、エキ
ゾーストマニホールド3aに排気管3bを連結して構成
される排気経路3とに跨って取り付けられている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an EGR device for a diesel engine with a supercharger according to the present invention will be described with reference to the drawings. In FIG. 1, 1 is an engine, 2
a is an intake manifold attached to the engine 1; 3a is an exhaust manifold attached to the engine 1; Reference numeral 4 denotes a supercharger, and the supercharger 4 is provided with the intake manifold 2a.
And an exhaust passage 3 formed by connecting an exhaust pipe 3b to an exhaust manifold 3a.

【0006】吸気経路2と排気経路3とは、前記排気経
路3における過給機取り付け位置より上流側の部位、即
ちエキゾーストマニホールド3aと、吸気経路2におけ
る過給機取り付け位置より下流部位、即ちインテークマ
ニホールド2aとが、還流路としてのEGRパイプ5で
結ばれている。そして前記インテークマニホールド2a
との接続部には、EGRバルブ5aが取り付けられてい
る。
[0006] The intake path 2 and the exhaust path 3 are located upstream of the turbocharger mounting position in the exhaust path 3, ie, the exhaust manifold 3a, and downstream of the turbocharger mounting position in the intake path 2, ie, the intake. The manifold 2a is connected by an EGR pipe 5 as a return path. And the intake manifold 2a
An EGR valve 5a is attached to the connection portion with the EGR valve 5a.

【0007】前記EGRパイプ5には、図2に示すよう
に、ウォタージャケット6a内を通過する冷却水6bに
よってEGRパイプ5内の排気ガスを冷却する熱交換器
6が装着されている。又EGRパイプ5は熱交換器6の
装着位置より下流側を上流側に比べて小径に形成し、そ
れら大径の上流側と小径の下流側とを同軸配置して、両
者の隙間を流路方向と直交する壁体7により閉塞した段
付き構造に形成されている。更に、壁体7の直前にあた
る周壁には、下側面にドレンパイプ8が分岐接続された
凝縮水排出口8aが設けられ、前記ドレンパイプ8は、
排気経路3における排気管3bの下流側にあたるマフラ
ー9の直前に連結されている。
As shown in FIG. 2, the EGR pipe 5 is provided with a heat exchanger 6 for cooling the exhaust gas in the EGR pipe 5 by cooling water 6b passing through the water jacket 6a. Also, the EGR pipe 5 is formed such that the downstream side from the mounting position of the heat exchanger 6 is smaller in diameter than the upstream side, and the large-diameter upstream side and the small-diameter downstream side are coaxially arranged, and the gap between them is formed in the flow path. It is formed in a stepped structure closed by a wall 7 orthogonal to the direction. Further, a condensed water discharge port 8a is provided on a lower surface of the peripheral wall immediately before the wall body 7 and a drain pipe 8 is connected in a branched manner.
It is connected immediately before the muffler 9 on the downstream side of the exhaust pipe 3b in the exhaust path 3.

【0008】このように構成されたEGR装置は、EG
Rバルブ5aを開くことによって、排気ガスをインテー
クマニホールド2a内に送り込み、窒素酸化物の排出を
抑制する。又、前記排気ガスがEGRパイプ5内を通過
する際、熱交換器6装着部内にて凝縮水が発生するが、
その凝縮水は、排気ガスの流れに乗って下流側へと送ら
れ、壁体7にぶつかって凝縮水排出口8aからドレンパ
イプ8内に流れ込み、排気管3b内に排出される。通
常、過給機が有効に作動している状態では、排気経路に
おける過給機取り付部位の上流位置と吸気経路における
過給機取り付け部位の下流位置は、両方ともに内部の圧
力が大気圧以上に保たれるため、EGRパイプ内も大気
圧以上の圧力が維持される。よって、より圧力の低い排
気管3b内に対し、流速の速い排気ガスの流れが生じ、
この排気ガスの流れにより凝縮水の排出が促進される。
[0008] The EGR device configured as described above has an EG
By opening the R valve 5a, exhaust gas is sent into the intake manifold 2a to suppress the emission of nitrogen oxides. When the exhaust gas passes through the EGR pipe 5, condensed water is generated in the heat exchanger 6 mounting portion.
The condensed water is sent downstream along with the flow of the exhaust gas, hits the wall body 7, flows into the drain pipe 8 from the condensed water discharge port 8a, and is discharged into the exhaust pipe 3b. Normally, when the turbocharger is operating effectively, the internal pressure is higher than the atmospheric pressure in both the upstream position of the turbocharger mounting portion in the exhaust path and the downstream position of the turbocharger mounting portion in the intake path. Therefore, the pressure inside the EGR pipe is maintained at a pressure higher than the atmospheric pressure. Therefore, a high-speed exhaust gas flow is generated in the lower-pressure exhaust pipe 3b,
The discharge of the condensed water is promoted by the flow of the exhaust gas.

【0009】よって熱交換器取り付け部で凝縮水が発生
しても、その凝縮水がインテークマニホールド内に導入
されず排気管に送り出されるから、吸気系の腐食が防止
され、一方排気管に排出された凝縮水は、瞬時に蒸発さ
れる。
Therefore, even if condensed water is generated in the heat exchanger mounting portion, the condensed water is sent to the exhaust pipe without being introduced into the intake manifold, so that corrosion of the intake system is prevented, and the condensed water is discharged to the exhaust pipe. The condensed water is instantaneously evaporated.

【0010】前記実施の形態では、ドレンパイプをエキ
ゾーストパイプに接続しているが、図3に示すようにド
レンパイプ8を大気に開放させ、フロアなどに設置する
据え置きタイプであれば側溝へ、車輌搭載タイプであれ
ば、エアコンから排出される凝縮水とともに路面に流す
ことができる。前記のように構成を変更したとしても、
ドレンパイプの接続先の圧力が大気圧相当であれば、前
記実施の形態と同様、凝縮水の排出は促進される。又、
図4の(a)に示すように、ドレンパイプ8に電磁式も
開閉バルブ10を設けると共に、凝縮水排出口8aの近
傍にセンサ11を取り付け、凝縮水排出口8aの近くに
凝縮水がある場合のみに、制御器12で前記開閉バルブ
10を開き、凝縮水を排出させるようにすることもでき
る。そのようにすれば、ドレンパイプを大気に開放した
場合でも、排気音がドレンパイプを介して常時漏れるこ
とがなくなる。更に、図4の(b)に示すように、ドレ
ンパイプ8に絞り13を設け、ドレンパイプ8から漏れ
るEGRガスの量を抑え、EGR効果の低減防止を図る
こともできる。
In the above-mentioned embodiment, the drain pipe is connected to the exhaust pipe. However, as shown in FIG. If it is a mounted type, it can flow on the road surface together with the condensed water discharged from the air conditioner. Even if the configuration is changed as described above,
If the pressure at the connection destination of the drain pipe is equivalent to the atmospheric pressure, the discharge of the condensed water is promoted as in the above embodiment. or,
As shown in FIG. 4A, an electromagnetic opening / closing valve 10 is provided in the drain pipe 8, and a sensor 11 is attached near the condensed water discharge port 8a, and condensed water is present near the condensed water discharge port 8a. Only in this case, the controller 12 may open the on-off valve 10 to discharge the condensed water. By doing so, even when the drain pipe is opened to the atmosphere, the exhaust sound does not always leak through the drain pipe. Further, as shown in FIG. 4B, a throttle 13 is provided in the drain pipe 8 so that the amount of EGR gas leaking from the drain pipe 8 can be suppressed and the EGR effect can be prevented from being reduced.

【0011】実施の形態では、EGRパイプを、大径の
上流側と小径の下流側とを同軸に配置してその連結段部
を壁体としたが、図5の(a)に示すように、小径部
を、その上縁が大径部の上縁と連続するようにし、下側
のみに壁体7が形成されるようにしたり、径を変えない
で壁体7のみを全周、或いは図5の(b)に示すように
下半分に設けても良い。又EGRパイプは、排気経路に
おける過給機取り付け部位の上流位置と吸気経路におけ
る過給機取り付け位置より下流部位であればその連結或
いは接続先は実施例に限定されるものではない。
In the embodiment, the EGR pipe has a large-diameter upstream side and a small-diameter downstream side arranged coaxially, and a connecting step portion thereof is formed as a wall. However, as shown in FIG. The small-diameter portion has its upper edge continuous with the upper edge of the large-diameter portion so that the wall 7 is formed only on the lower side, or the entire circumference of the wall 7 alone without changing the diameter, or It may be provided in the lower half as shown in FIG. The connection or connection of the EGR pipe is not limited to the embodiment as long as the EGR pipe is located upstream of the turbocharger mounting portion in the exhaust path and downstream of the turbocharger mounting position in the intake path.

【0012】本発明のEGR装置は、エンジンに接近さ
せて極めてコンパクトに付設でき、還流路内において熱
交換器装着部分で発生した凝縮水を凝縮水排出口から排
出するので、吸気経路の腐食が阻止され、耐久性が高め
られる。
The EGR device of the present invention can be attached very compactly close to the engine, and discharges the condensed water generated at the heat exchanger mounting portion in the recirculation passage from the condensed water discharge port. It is blocked and durability is increased.

【0013】[0013]

【発明の効果】本発明によれば、過給機を備えたディー
ゼルエンジンにおいて、排気経路における過給機取り付
け部位の上流位置と吸気経路における過給機取り付け位
置より下流部位とを還流路で連通したから、極めてコン
パクト化されたEGR装置を付設できる。而もそのEG
R装置に装着されている熱交換器内で発生した凝縮水が
吸気系に流れ込まないよう効率よく排出してしまうこと
ができるので、吸気経路を腐食させてしまう心配はない
し、動力源も必要ない。そしてドレンパイプをエキゾー
ストパイプに接続すれば、高温の排気ガスや加熱された
パイプにより瞬時に蒸発させてしまうし、大気に開放す
れば、エンジン始動時でエキゾーストパイプがまだ充分
に加熱されないときでも、エキゾーストパイプ内に残る
ことはない。又、バルブを設けたり絞りを設ければ、ド
レンパイプからのガス漏れを最小限にすることができ
る。
According to the present invention, in a diesel engine provided with a supercharger, an upstream position of a supercharger mounting portion in an exhaust passage and a downstream portion of the supercharger mounting position in an intake passage communicate with a recirculation passage. Therefore, an extremely compact EGR device can be provided. The EG
Since the condensed water generated in the heat exchanger mounted on the R unit can be efficiently discharged so as not to flow into the intake system, there is no need to worry about corroding the intake path and no power source is required. . And if you connect the drain pipe to the exhaust pipe, it will evaporate instantly by high temperature exhaust gas and heated pipe, and if you open it to the atmosphere, even if the exhaust pipe is not yet sufficiently heated at engine start, It does not remain in the exhaust pipe. If a valve or a throttle is provided, gas leakage from the drain pipe can be minimized.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係るEGR装置の説明図である。FIG. 1 is an explanatory diagram of an EGR device according to the present invention.

【図2】還流路の詳細を示した説明図である。FIG. 2 is an explanatory diagram showing details of a return path.

【図3】ドレンパイプを大気に開放した変更例の説明図
である。
FIG. 3 is an explanatory view of a modification in which a drain pipe is opened to the atmosphere.

【図4】ドレンパイプにバルブや絞りを設けた変更例を
示す説明図である。
FIG. 4 is an explanatory view showing a modified example in which a valve and a throttle are provided in a drain pipe.

【図5】EGRパイプの変更例を示した説明図である。FIG. 5 is an explanatory diagram showing a modified example of an EGR pipe.

【符号の説明】[Explanation of symbols]

1・・エンジン、2・・吸気経路、2a・・インテーク
マニホールド、2b・・吸気管、3・・排気経路、3a
・・エキゾーストマニホールド、3b・・排気管、4・
・過給機、5・・EGRパイプ、6・・熱交換器、6a
・・ウォタージャケット、6b・・冷却水、7・・壁
体、8・・ドレンパイプ、9・・凝縮水排出口、10・
・開閉バルブ、11・・センサ、12・・制御器、13
・・絞り。
1. Engine, 2. Intake path, 2a Intake manifold, 2b Intake pipe, 3. Exhaust path, 3a
..Exhaust manifold, 3b..Exhaust pipe, 4.
・ Supercharger, 5 ・ ・ EGR pipe, 6 ・ ・ Heat exchanger, 6a
· · · Water jacket, 6b · · · cooling water, 7 · · · wall, 8 · · drain pipe, 9 · · · condensed water outlet
・ Opening / closing valve, 11 ・ ・ Sensor, 12 ・ ・ Controller, 13
・ ・ Aperture.

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 排気経路における過給機取り付け部位の
上流位置と吸気経路における過給機取り付け位置より下
流部位とを還流路で連通し、その還流路に熱交換器を設
けると共に、還流路の熱交換器より下流部位に凝縮水排
出口を設けた過給機付きディーゼルエンジンのEGR装
置。
An upstream position of a supercharger mounting portion in an exhaust path and a downstream portion of a supercharger mounting position in an intake path communicate with a return path, and a heat exchanger is provided in the return path. An EGR device for a turbocharged diesel engine that has a condensed water discharge port downstream of the heat exchanger.
【請求項2】 凝縮水排出口の直後に当たる還流路の内
周壁に、流路方向と直交する壁体を設けた請求項1に記
載した過給機付きディーゼルエンジンのEGR装置。
2. The EGR device for a turbocharged diesel engine according to claim 1, wherein a wall body orthogonal to the flow path direction is provided on an inner peripheral wall of the return path immediately after the condensed water discharge port.
【請求項3】 大径の上流側と小径の下流側とを同軸配
置し、両者の隙間を流路方向と直交する面で閉塞するこ
とにより、還流路の内周に壁体が形成されている請求項
2に記載した過給機付きディーゼルエンジンのEGR装
置。
3. A large-diameter upstream side and a small-diameter downstream side are coaxially arranged, and a gap therebetween is closed with a surface orthogonal to the flow direction, so that a wall is formed on the inner periphery of the return path. An EGR device for a turbocharged diesel engine according to claim 2.
【請求項4】 凝縮水排出口を排気管に接続した請求項
1〜3のいずれかに記載した過給機付きディーゼルエン
ジンのEGR装置。
4. The EGR device for a turbocharged diesel engine according to claim 1, wherein the condensed water discharge port is connected to an exhaust pipe.
【請求項5】 凝縮水排出口を大気に開放した請求項1
〜3のいずれかに記載した過給機付きディーゼルエンジ
ンのEGR装置。
5. The condensed water discharge port is open to the atmosphere.
3. The EGR device for a diesel engine with a supercharger according to any one of claims 1 to 3.
【請求項6】 凝縮水排出口にバルブを設けた請求項1
〜3のいずれかに記載した過給機付きディーゼルエンジ
ンのEGR装置。
6. A valve according to claim 1, wherein a condensed water outlet is provided with a valve.
3. The EGR device for a diesel engine with a supercharger according to any one of claims 1 to 3.
JP10199102A 1998-07-14 1998-07-14 Egr device for diesel engine having supercharger Pending JP2000027715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10199102A JP2000027715A (en) 1998-07-14 1998-07-14 Egr device for diesel engine having supercharger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10199102A JP2000027715A (en) 1998-07-14 1998-07-14 Egr device for diesel engine having supercharger

Publications (1)

Publication Number Publication Date
JP2000027715A true JP2000027715A (en) 2000-01-25

Family

ID=16402166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10199102A Pending JP2000027715A (en) 1998-07-14 1998-07-14 Egr device for diesel engine having supercharger

Country Status (1)

Country Link
JP (1) JP2000027715A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7607301B2 (en) 2005-08-30 2009-10-27 Denso Corporation Exhaust gas heat exchanger, exhaust gas recirculation system, and exhaust gas heat exchanging method
US7921648B2 (en) * 2005-02-21 2011-04-12 Behr Gmbh & Co. Kg Exhaust gas turbocharger internal combustion engine
GB2476049A (en) * 2009-12-08 2011-06-15 Gm Global Tech Operations Inc I.c. gas inlet passage with an outlet port, darin or passage for condensed liquid, eg water
US20120073288A1 (en) * 2010-09-09 2012-03-29 Ford Global Technologies, Llc Method and system for turbocharging an engine
WO2012048786A1 (en) * 2010-10-14 2012-04-19 Daimler Ag Exhaust gas recirculation with condensate discharge
JP2013068120A (en) * 2011-09-21 2013-04-18 Daihatsu Motor Co Ltd Internal combustion engine
WO2014207917A1 (en) 2013-06-28 2014-12-31 トヨタ自動車株式会社 Condensed water processing device for internal combustion engine
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7921648B2 (en) * 2005-02-21 2011-04-12 Behr Gmbh & Co. Kg Exhaust gas turbocharger internal combustion engine
US7607301B2 (en) 2005-08-30 2009-10-27 Denso Corporation Exhaust gas heat exchanger, exhaust gas recirculation system, and exhaust gas heat exchanging method
GB2476049A (en) * 2009-12-08 2011-06-15 Gm Global Tech Operations Inc I.c. gas inlet passage with an outlet port, darin or passage for condensed liquid, eg water
US9470182B2 (en) 2010-09-09 2016-10-18 Ford Global Technologies, Llc Method and system for turbocharging an engine
US8739527B2 (en) * 2010-09-09 2014-06-03 Ford Global Technologies, Llc Method and system for turbocharging an engine
US20120073288A1 (en) * 2010-09-09 2012-03-29 Ford Global Technologies, Llc Method and system for turbocharging an engine
WO2012048786A1 (en) * 2010-10-14 2012-04-19 Daimler Ag Exhaust gas recirculation with condensate discharge
US20130219886A1 (en) * 2010-10-14 2013-08-29 Daimler Ag Exhaust gas recirculation arrangement with condensate discharge
JP2013068120A (en) * 2011-09-21 2013-04-18 Daihatsu Motor Co Ltd Internal combustion engine
WO2014207917A1 (en) 2013-06-28 2014-12-31 トヨタ自動車株式会社 Condensed water processing device for internal combustion engine
US9695728B2 (en) 2013-06-28 2017-07-04 Toyota Jidosha Kabushiki Kaisha Condensed water treatment device for internal combustion engine
CN106958498A (en) * 2016-01-12 2017-07-18 福特环球技术公司 Condensate management system for vent gas cooler and heat reclamation device
US20180023522A1 (en) * 2016-07-22 2018-01-25 Ford Global Technologies, Llc System and methods for extracting water from exhaust gases for water injection
US10215135B2 (en) * 2016-07-22 2019-02-26 Ford Global Technologies, Llc System and methods for extracting water from exhaust gases for water injection
JP2020045878A (en) * 2018-09-21 2020-03-26 いすゞ自動車株式会社 Condensate water discharge mechanism and gasket for the same

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