JP2005535438A5 - - Google Patents

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Publication number
JP2005535438A5
JP2005535438A5 JP2004527040A JP2004527040A JP2005535438A5 JP 2005535438 A5 JP2005535438 A5 JP 2005535438A5 JP 2004527040 A JP2004527040 A JP 2004527040A JP 2004527040 A JP2004527040 A JP 2004527040A JP 2005535438 A5 JP2005535438 A5 JP 2005535438A5
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JP
Japan
Prior art keywords
filter
mechanism according
soot
metal strip
catalyst
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
JP2004527040A
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Japanese (ja)
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JP2005535438A (en
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Publication date
Priority claimed from GBGB0218540.3A external-priority patent/GB0218540D0/en
Application filed filed Critical
Publication of JP2005535438A publication Critical patent/JP2005535438A/en
Publication of JP2005535438A5 publication Critical patent/JP2005535438A5/ja
Pending legal-status Critical Current

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Claims (10)

リーンバーン内燃機関用の排気機構であって、
細長く平らで、狭い金属細片の固まりを充填した煤フィルターと、および
前記フィルターに集められた煤を燃焼させるための、前記フィルターの上流部に設けられた、ＮＯをＮＯ２に酸化してなる触媒とを備えてなり、
前記触媒が、前記フィルターに使用する型の金属基材上に担持されてなるが、低い充填密度で担持されて煤粒子が通過できるようにされてなる、排気機構。 An exhaust mechanism for a lean burn internal combustion engine,
A soot filter filled with a slender, flat, narrow metal strip, and upstream of the filter for burning soot collected in the filter, NO is oxidized to NO 2 With a catalyst,
An exhaust mechanism in which the catalyst is supported on a metal substrate of a type used for the filter, but is supported at a low packing density so that soot particles can pass therethrough. 上流から下流に向かう順序で、益々小さくなっていく粒子を連続的に捕獲するように設計された複数の金属系フィルターを備えてなる、請求項１に記載の機構。   The mechanism of claim 1 comprising a plurality of metallic filters designed to continuously capture increasingly smaller particles in an order from upstream to downstream. さらに小さな粒子を捕獲するための少なくとも一個のウォール−フロ−フィルターを備えてなる、請求項２に記載の機構。   3. A mechanism according to claim 2, comprising at least one wall-flow filter for capturing smaller particles. 前記または各一対の金属系フィルター間にフロースルーモノリスを備えてなり、
必要に応じて、ＮＯ酸化触媒を備えてなり、それによって前記先行するフィルター中での煤との反応により減少したＮＯ２含有量を回復してなる、請求項２または３に記載の機構。 A flow-through monolith is provided between the or each pair of metal filters,
If necessary, it comprises a NO oxidation catalyst, thereby made to recover the reduced NO 2 content by reaction with soot in a filter of the preceding mechanism according to claim 2 or 3. 前記フィルターが、全体的または区域的に、規則的な、コイル状の、織り上げた、または編み上げた構造を有するものである、請求項１〜４のいずれか一項に記載の機構。   5. A mechanism according to any one of the preceding claims, wherein the filter has a general, area, regular, coiled, woven or knitted structure. 前記フィルターの前記金属細片の幅が２ｍｍまで、特に０．１〜０．５ｍｍであり、
前記金属細片の厚さが、前記金属細片の幅の０．２〜０．８である、請求項１〜５のいずれか一項に記載の機構。 The width of the metal strip of the filter is up to 2 mm, in particular 0.1 to 0.5 mm,
The mechanism according to any one of claims 1 to 5, wherein the thickness of the metal strip is 0.2 to 0.8 of the width of the metal strip. 前記細長く平らで、狭い金属細片が、平らにしたワイヤである、請求項６に記載の機構。   The mechanism of claim 6, wherein the elongated flat, narrow metal strip is a flattened wire. 前記フィルター充填物が、煤の酸化に触媒作用する層を担持してなり、
必要に応じて、Ｐｔ、またはＣｓおよびＶの酸化物を包含するウォッシュコートを含んでなる、請求項１〜７のいずれか一項に記載の機構。 The filter packing carries a layer that catalyzes the oxidation of soot,
8. A mechanism according to any one of the preceding claims comprising a washcoat comprising Pt, or Cs and V oxides, as appropriate. 前記フィルターに集められた煤を燃焼させるための、オゾンおよび／またはプラズマを発生させる手段を備えてなる、請求項１〜８のいずれか一項に記載の機構。   The mechanism according to any one of claims 1 to 8, comprising means for generating ozone and / or plasma for burning the soot collected in the filter. 請求項１〜９のいずれか一項に記載の排気機構を備えてなる、内燃機関。   An internal combustion engine comprising the exhaust mechanism according to any one of claims 1 to 9.
JP2004527040A 2002-08-09 2003-08-08 Exhaust mechanism for lean burn engine Pending JP2005535438A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0218540.3A GB0218540D0 (en) 2002-08-09 2002-08-09 Engine exhaust treatment
PCT/GB2003/003462 WO2004015252A1 (en) 2002-08-09 2003-08-08 Exhaust system for a lean-burn ic engine

Publications (2)

Publication Number Publication Date
JP2005535438A JP2005535438A (en) 2005-11-24
JP2005535438A5 true JP2005535438A5 (en) 2006-09-28

Family

ID=9942027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004527040A Pending JP2005535438A (en) 2002-08-09 2003-08-08 Exhaust mechanism for lean burn engine

Country Status (8)

Country Link
US (1) US20060185352A1 (en)
EP (1) EP1540150A1 (en)
JP (1) JP2005535438A (en)
KR (1) KR20050062530A (en)
CN (1) CN100416052C (en)
AU (1) AU2003255762A1 (en)
GB (1) GB0218540D0 (en)
WO (1) WO2004015252A1 (en)

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