JP5862870B2 - 排気浄化装置 - Google Patents
排気浄化装置 Download PDFInfo
- Publication number
- JP5862870B2 JP5862870B2 JP2011277600A JP2011277600A JP5862870B2 JP 5862870 B2 JP5862870 B2 JP 5862870B2 JP 2011277600 A JP2011277600 A JP 2011277600A JP 2011277600 A JP2011277600 A JP 2011277600A JP 5862870 B2 JP5862870 B2 JP 5862870B2
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- exhaust
- upstream
- downstream
- carrier
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Description
12 点火プラグ
13 燃料噴射弁
14 吸気ポート
15 スロットルバルブ
16 排気ポート
17 排気管
18 上流触媒
19 下流触媒
21 排気浄化装置
22 担体
23 触媒層
24 第1表層
25 第1内層
32 担体
33 触媒層
34 第2表層
35 第2内層
Claims (4)
- 内燃機関の排気通路を構成する排気管の上流側であってエンジンルーム内に設けられた上流触媒と、該上流触媒よりも下流側の前記排気管であって車両のフロア下に設けられた下流触媒とを備えた排気浄化装置であって、
前記上流触媒は、触媒成分として少なくとも2種類の貴金属を含有する触媒層が担体に担持されたものであり、前記下流触媒は、触媒成分として前記上流触媒に担持された貴金属のうち少なくとも1つが遷移金属に置換された触媒層が担体に担持されたものであり、
前記下流触媒は、触媒成分として前記貴金属を含有する表層、及び触媒成分として前記遷移金属を含有する内層とからなる触媒層が担体に担持されたものであることを特徴とする排気浄化装置。 - 前記上流触媒の触媒層には貴金属としてパラジウム及びロジウムが含有され、
前記下流触媒の触媒層には貴金属としてロジウムが含有されていることを特徴とする請求項1記載の排気浄化装置。 - 前記遷移金属が鉄であることを特徴とする請求項1又は2に記載の排気浄化装置。
- 前記上流触媒は、遷移金属を含まず、前記排気管の上流端部に設けられていることを特徴とする請求項1〜3のいずれか一項に記載の排気浄化装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011277600A JP5862870B2 (ja) | 2011-12-19 | 2011-12-19 | 排気浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011277600A JP5862870B2 (ja) | 2011-12-19 | 2011-12-19 | 排気浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013127233A JP2013127233A (ja) | 2013-06-27 |
JP5862870B2 true JP5862870B2 (ja) | 2016-02-16 |
Family
ID=48777893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011277600A Expired - Fee Related JP5862870B2 (ja) | 2011-12-19 | 2011-12-19 | 排気浄化装置 |
Country Status (1)
Country | Link |
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JP (1) | JP5862870B2 (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62136245A (ja) * | 1985-12-09 | 1987-06-19 | Toyota Motor Corp | 排気ガス浄化用触媒装置 |
US6044644A (en) * | 1994-12-06 | 2000-04-04 | Engelhard Corporation | Close coupled catalyst |
US6497851B1 (en) * | 1994-12-06 | 2002-12-24 | Englehard Corporation | Engine exhaust treatment apparatus and method of use |
JP3560147B2 (ja) * | 1999-07-02 | 2004-09-02 | 日産自動車株式会社 | 排気ガス浄化システム |
DE50106490T2 (de) * | 2000-03-28 | 2006-03-30 | Umicore Ag & Co. Kg | Einschichtiger Hochleistungskatalysator |
US20020172625A1 (en) * | 2000-06-30 | 2002-11-21 | Hiroyuki Nakajima | Catalyst device for clarification of exhaust gas |
-
2011
- 2011-12-19 JP JP2011277600A patent/JP5862870B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2013127233A (ja) | 2013-06-27 |
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