[특허]Low temperature diesel particulate matter reduction system

Low temperature diesel particulate matter reduction system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-050/00
출원번호	US-0725578 (2007-03-19)
등록번호	US7862640 (2010-12-20)
발명자 / 주소	Zhang, Wenzhong Taubert, Todd R. Ricke, Timothy L. Imes, Julian A.
출원인 / 주소	Donaldson Company, Inc.
대리인 / 주소	Merchant & Gould P.C.
인용정보	피인용 횟수 : 7 인용 특허 : 130

초록 ▼

A system for treating diesel exhaust is disclosed. The system includes a first filter including layers of filtration material positioned between layers of corrugated metallic foil. The metallic foil defines a honeycomb arrangement of longitudinal passageways from an upstream end to a downstream end and also openings for allowing exhaust to pass between adjacent longitudinal passageways of the metallic foil. The filtration material is positioned such that exhaust between the adjacent longitudinal passageways passes through the filtration material. The metallic foil also includes flow diverting structures to divert flow within the longitudinal passageways through the openings. A second filter is positioned downstream from the first filter. The second filter defines a honeycomb arrangement of longitudinal passageways. The longitudinal passages are selectively plugged adjacent upstream and downstream ends to force flow radially through walls between the longitudinal passages of the second filter.

대표청구항 ▼

What is claimed is: 1. A system for treating diesel exhaust, the system comprising:a first filter including a first substrate having layers of filtration material positioned between layers of corrugated metallic foil, the corrugated metallic foil defining a honeycomb arrangement of longitudinal passageways that extend from an upstream end to a downstream end of the first substrate, the corrugated metallic foil defining openings for allowing exhaust to pass between adjacent longitudinal passageways of the corrugated metallic foil, the filtration material being positioned such that exhaust passing between the adjacent longitudinal passageways passes through the filtration material, the corrugated metallic foil also including flow diverting structures positioned to divert exhaust flow within the longitudinal passageways through the openings; anda second filter positioned downstream from the first filter, the second filter including a second substrate defining a honeycomb arrangement of longitudinal passageways that extend from an upstream end to a downstream end of the second substrate, the longitudinal passages being selectively plugged adjacent upstream and downstream ends of the second substrate such that exhaust flow is forced to flow radially through walls between the longitudinal passages of the second substrate;wherein the first filter is loaded with a precious metal catalyst for catalyzing the conversion of NO to NO2, and wherein a precious metal catalyst loading of the first filter and a particulate mass reduction efficiency of the first filter are selected such that during operation of the system a ratio of the mass of the NO2 and the mass of the particulate matter in the exhaust is in the range of 8-14 at a location between the first and second filters;wherein the first filter is capable of filtering hard carbon from the diesel exhaust and the particulate mass reduction efficiency of the first filter in the range of 15-50 percent;wherein the second filter has a particulate mass reduction efficiency greater than 75 percent;wherein the first and second filters are relatively sized such that in use the space velocity of the first filter is 3-5 times the space velocity of the second filter;wherein the second filter is loaded with a precious metal catalyst and has an overall lower precious metal loading than the first filter; and;wherein the particulate mass reduction efficiency of the first filter and the precious metal catalyst loading of the first filter are balanced such that a ratio of NO2, in the exhaust to total NOx in the exhaust is less than 50 percent in the location between the first and second filters when the system is tested using exhaust from a Caterpillar 3126 diesel engine having 210 horsepower at 2200 rotations-per-minute, the Caterpillar 3126 diesel engine being operated according to Federal Transient Testing Protocol (FTP) at torque levels ranging from 40-100 percent during testing.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Low temperature diesel particulate matter reduction system 원문보기

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Low temperature diesel particulate matter reduction system 원문보기

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