JPS59165816A - Regenerator for diesel particulate filter - Google Patents

Regenerator for diesel particulate filter

Info

Publication number
JPS59165816A
JPS59165816A JP58037488A JP3748883A JPS59165816A JP S59165816 A JPS59165816 A JP S59165816A JP 58037488 A JP58037488 A JP 58037488A JP 3748883 A JP3748883 A JP 3748883A JP S59165816 A JPS59165816 A JP S59165816A
Authority
JP
Japan
Prior art keywords
dpf
filter
exhaust gas
muffler
downstream
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
JP58037488A
Other languages
Japanese (ja)
Inventor
Kiyoshi Hatano
清 波多野
Hiroyasu Endo
遠藤　博康
Katsuyuki Tsuji
勝之 辻
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.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP58037488A priority Critical patent/JPS59165816A/en
Publication of JPS59165816A publication Critical patent/JPS59165816A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/0233—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/031—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start
    • F01N3/032—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters having means for by-passing filters, e.g. when clogged or during cold engine start during filter regeneration only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/05—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of air, e.g. by mixing exhaust with air
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/02—Exhaust filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

PURPOSE:To obtain a regenerator in which a large amount of Pct can be burned at once in a various sorts of operation states by introducing a portion of exhaust gas and the air in a proper mixing ratio from the downstream side of a DPF through a muffler in the utilization of an intake throttle. CONSTITUTION:When Pct is deposited onto a DPF 2 and the filtration resistance increases, regeneration of DPF 2 is required. A portion of exhaust gas and the air are introduced from the downstream of the DPF 2 through a muffler 11 from an intake throttle 10, and DPF 2 is regenerated by the combustion by a burner. The mixing ratio between the exhaust gas and the air is controlled by adjusting the throttle angle of a control valve 6 behind the muffler 11 according to the operation condition of the engine, and each variation of the O2 concentration and the gas temperature during regeneration is reduced.

Description

【発明の詳細な説明】 ルパティキュレートフィルタの再生装置に関スル。[Detailed description of the invention] Concerning regeneration equipment for reparticulate filters.

ディーゼルパティキュレートフィルタ（以下ＤＰＦと略
称）の再生は一般に再生時のガス流量が大きくなるほど
一時に焼却可能なパティキュレート量は多くなる。しか
し従来のバイパス方式では電動ポンプでバーナのエア供
給を行っているのでポンプ能力に限界があシ、多量の・
母ティキーレート量を焼却することはできない。またバ
イｉ？スを設けないで排ガス中でバーナを燃焼させてＤ
ＰＦを再生する方式ではエンジンの運転条件によシ排ガ
ス温度、０２濃度の変動が大きく、焼却条件のコントロ
ールが難しい。When regenerating a diesel particulate filter (hereinafter abbreviated as DPF), generally speaking, the larger the gas flow rate during regeneration, the larger the amount of particulates that can be incinerated at one time. However, in the conventional bypass system, air is supplied to the burner using an electric pump, which has a limited pumping capacity and requires a large amount of air.
The mother tiki rate amount cannot be incinerated. Bye again? D by burning the burner in the exhaust gas without providing a
In the method of regenerating PF, the exhaust gas temperature and 02 concentration fluctuate greatly depending on the engine operating conditions, making it difficult to control the incineration conditions.

本発明の目的は多くのＤＰＦをあらゆる運転状態で一時
に焼却でき、しかもＤＰＦの割れや溶損事故の発生を防
止したＤＰＦの再生装置を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a DPF regeneration device that can incinerate a large number of DPFs at the same time under all operating conditions and prevents DPF cracking and melting accidents.

本発明に係るＤＰＦの再生装置は、吸気絞シを利用しマ
フラを介して排ガスの一部および大気を適正な混合比で
ＤＰＦの下流側から導入し、バーナの燃焼によ、９　Ｄ
ＰＦを再生させ前記目的を達成できるように構成したも
のである。The DPF regeneration device according to the present invention introduces part of the exhaust gas and the atmosphere from the downstream side of the DPF through the muffler using the intake throttle, and by the combustion of the burner, 9 D
The structure is such that the above object can be achieved by regenerating the PF.

以十−図を参照踵本発明に係るＤＰＦの再生装置の一実
施例について説明する。Referring to the following figures, an embodiment of a DPF regeneration device according to the present invention will be described.

図で１はディーゼルエンジン、２ハＤＰＦ、３ｕバーナ
、４は排気のバイパス通路、５は神λ連路、６は制御弁
、７はバイパス切換弁、８は吸気管、９はＤＰＦ　、２
に近接した地点と吸気管とをつなぐ吸気絞シ１０付の連
通管、１１は主マフラ、１２は副マフラである。In the figure, 1 is a diesel engine, 2 is a DPF, 3 is a burner, 4 is an exhaust bypass passage, 5 is a flow passage, 6 is a control valve, 7 is a bypass switching valve, 8 is an intake pipe, 9 is a DPF, 2
11 is a main muffler, and 12 is a sub-muffler.

ＤＰＦ　２の下流の排気管中にはバーナ３とマフラ１１
が順次膜けられ、さらにその下流にはバイパス通路４と
主排気管を連通する瀬￥ＪＬ　ｊｊｌ　Ｈ５を有してお
り、との末＃　気４Ｎ−５と主排気管１１０合流点より
下流側の主排気管１１内には制御弁６が設けられ、又り
、ＰＦ　２とパイ／ガス分岐点との中間点と吸気管８と
の間には吸気絞シ１０付の連通管８で結ばれている。Burner 3 and muffler 11 are located in the exhaust pipe downstream of DPF 2.
are successively removed, and further downstream there is a passage H5 that communicates the bypass passage 4 and the main exhaust pipe, and at the end, the downstream side from the confluence of the air 4N-5 and the main exhaust pipe 110. A control valve 6 is provided in the main exhaust pipe 11 of the PF 2, and a communication pipe 8 with an intake throttle 10 is connected between the intermediate point between the PF 2 and the pi/gas branch point and the intake pipe 8. It is.

次に上記実施例の作用について説明する。Next, the operation of the above embodiment will be explained.

ＤＰＦ　２にＰｅｔが析出しろ過抵抗が増加すると、Ｄ
ＰＦ　２の再生が必要となる。再生時には吸気絞シ１０
によシマフラ１１を介して排ガスの一部及び大気をＤｐ
Ｆ　２の下流から導入し、バーナの燃焼によ、９　ＤＰ
Ｆ　２を再生させる。またエンジンの運転条件によシマ
クラ１１後の制御弁６の絞シ角を調整して排ガスと大気
との混合率をコントロールし、再生時の０２濃度とガス
温度の変動を少くするようにしている。When Pet precipitates in DPF 2 and filtration resistance increases, D
Regeneration of PF 2 is required. During regeneration, intake throttle is 10
A part of the exhaust gas and the atmosphere are transferred to Dp through the yoshimuffler 11.
Introduced from the downstream of F2, 9 DP due to burner combustion
Play F2. In addition, the throttle angle of the control valve 6 after the Shimakura 11 is adjusted according to the engine operating conditions to control the mixing ratio of the exhaust gas and the atmosphere, thereby reducing fluctuations in the 02 concentration and gas temperature during regeneration. .

前述のとセシ本発明に係るＤＰＦの再生装置は、再生時
吸気絞りによシ混合率を調整しマフラを介して排気ガス
の一部と大気の混合気をＤＰＦの下流側よシ導入し、バ
ーナ燃焼によｐ　ＤＰＦを再生するように構成している
。従って次のような効果を発生する。As mentioned above, the DPF regeneration device according to the present invention adjusts the mixture ratio through the intake throttle during regeneration, and introduces a mixture of part of the exhaust gas and the atmosphere through the muffler to the downstream side of the DPF, The pDPF is configured to be regenerated by burner combustion. Therefore, the following effects occur.

（１）再生用ガス（排ガス十大気）はマフラを介してＤ
ＰＦの下流より導入されるので、エンジンの運転条件の
変動による温度の変動が小さい。(1) Regeneration gas (exhaust gas 10 atmospheres) is passed through the muffler to D
Since it is introduced downstream of the PF, fluctuations in temperature due to fluctuations in engine operating conditions are small.

（２）０２濃度を制御弁と絞シでコントロールできるの
で、運転条件が変動しても安定したＤＰＦの再生が可能
である。(2) Since the 02 concentration can be controlled using the control valve and throttle valve, stable DPF regeneration is possible even when operating conditions change.

（３）大量のガスを供給できるので、より多くのＰｅｔ
を焼却できる。(3) A large amount of gas can be supplied, so more Pet
can be incinerated.

（４）　　ＤＰＦの下流からｐｅｔを焼却するため、そ
の反応熱をＤＰＦセルに伝えに〈〈なっておシ、ＤＰＦ
の割れと溶損を防止できる。(4) In order to incinerate PET from the downstream of the DPF, the reaction heat is transferred to the DPF cell.
can prevent cracking and melting damage.

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

図は本発明に係るＤＰＦ再生装置の構成図である。 ■・・・エンジン、２・・ディーゼルハティキュレート
フィルタ（Ｉ）ＰＦ）、３・・・バーナ、４・・・バイ
パス通路、５・・誹記也、ｌ、６・＝制御弁、８・・・
切換弁、８・・・吸気管、９・・・連通管、１０・・・
吸気絞シ、１１・・・主マフラ。 １＋The figure is a configuration diagram of a DPF regeneration device according to the present invention. ■... Engine, 2... Diesel reticulate filter (I) PF), 3... Burner, 4... Bypass passage, 5... Licensing, l, 6... = Control valve, 8...・
Switching valve, 8...Intake pipe, 9...Communication pipe, 10...
Intake throttle, 11...Main muffler. 1+

Claims (1)

【特許請求の範囲】[Claims] ディーゼルノｅティキーレートフィルタ（２）’ｔ１Ｍ
生するものにおいて、該フィルタ（２）の下流に設けら
れたバーナ装置（３）と、該フィルタ（３）の上流に設
けられた切換弁封の排ガスのパイ・ぐス通路（４）と該
フィルタ（２）と該パイ・ぐス分岐点との中間点と吸気
管（８）を連通ずる吸気絞シ（１０）伺の連通管（９）
と、主マフラ（１１）の下流と該ｉｅイパス通路（４）
を連通ずる誹’Ｌ　ｊＪｈｊ％−（５）と、エンジンの
主排気管内で該ｊＯ筑ｈＪＪ−（５）の合流点の下流側
に設けられた制御弁（６）とよシなシ、吸気絞９を利用
してエンジン排ガスの一部と制御弁（６）よシの大気と
を混合した再生ガスを主マフラ（１１）を介して該フィ
ル°りの下流側よシ導入し、該フ、ｆルタ下流に設けら
れたバーナ（３）の燃焼により該フィルタの再生を行う
ことを特徴とするディーゼルパティキュレートフィルタ
の再生装置。Diesel no e-tiki rate filter (2) 't1M
A burner device (3) provided downstream of the filter (2), an exhaust gas passage (4) sealed with a switching valve provided upstream of the filter (3), and a A communication pipe (9) between the intake throttle (10) and the intake pipe (8) that communicates the intermediate point between the filter (2) and the pi-gus branch point.
, downstream of the main muffler (11) and the ie path passage (4)
A control valve (6) installed on the downstream side of the confluence of the engine's main exhaust pipe and the intake air. Regeneration gas, which is a mixture of part of the engine exhaust gas and the atmosphere outside the control valve (6), is introduced into the downstream side of the filter via the main muffler (11) using the throttle 9, and A diesel particulate filter regeneration device characterized in that the filter is regenerated by combustion in a burner (3) provided downstream of a diesel particulate filter.
JP58037488A 1983-03-09 1983-03-09 Regenerator for diesel particulate filter Pending JPS59165816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58037488A JPS59165816A (en) 1983-03-09 1983-03-09 Regenerator for diesel particulate filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58037488A JPS59165816A (en) 1983-03-09 1983-03-09 Regenerator for diesel particulate filter

Publications (1)

Publication Number Publication Date
JPS59165816A true JPS59165816A (en) 1984-09-19

Family

ID=12498902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58037488A Pending JPS59165816A (en) 1983-03-09 1983-03-09 Regenerator for diesel particulate filter

Country Status (1)

Country Link
JP (1) JPS59165816A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864821A (en) * 1986-01-06 1989-09-12 Brehk Ventures Method and apparatus for filtering solid particulate matter from diesel engine exhaust
KR100271684B1 (en) * 1997-09-04 2001-05-02 신수항 Device for purifyiing and recirculating exhaust gas of vehicle
FR2919027A1 (en) * 2007-07-17 2009-01-23 Inst Francais Du Petrole METHOD FOR FILTRATION OF RECIRCULATED EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE AND ENGINE FOR USING SUCH A METHOD
WO2012041455A1 (en) * 2010-10-01 2012-04-05 Haldor Topsøe /S Method and system for the removal of particulate matter in engine exhaust gas

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864821A (en) * 1986-01-06 1989-09-12 Brehk Ventures Method and apparatus for filtering solid particulate matter from diesel engine exhaust
KR100271684B1 (en) * 1997-09-04 2001-05-02 신수항 Device for purifyiing and recirculating exhaust gas of vehicle
FR2919027A1 (en) * 2007-07-17 2009-01-23 Inst Francais Du Petrole METHOD FOR FILTRATION OF RECIRCULATED EXHAUST GASES OF AN INTERNAL COMBUSTION ENGINE AND ENGINE FOR USING SUCH A METHOD
EP2025914A1 (en) 2007-07-17 2009-02-18 Ifp Method of filtering exhaust gases recirculated from an internal combustion engine and engine using such a method.
WO2012041455A1 (en) * 2010-10-01 2012-04-05 Haldor Topsøe /S Method and system for the removal of particulate matter in engine exhaust gas

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