[특허]Exhaust purification system of internal combustion engine

Toyota Jidosha Kabushiki Kaisha

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Exhaust purification system of internal combustion engine

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F01N-003/00
미국특허분류(USC)	060/281; 060/286; 060/288; 060/292; 060/295; 060/324
출원번호	US-0260641 (2009-11-27)
등록번호	US-8534048 (2013-09-17)
국제출원번호	PCT/JP2009/070361 (2009-11-27)
§371/§102 date	20110927 (20110927)
국제공개번호	WO2011/064902 (2011-06-03)
발명자 / 주소	Inoue, Mikio
출원인 / 주소	Toyota Jidosha Kabushiki Kaisha
대리인 / 주소	Oliff & Berridge, PLC
인용정보	피인용 횟수 : 0 인용 특허 : 6

초록
▼

An exhaust purification system of an internal combustion engine provided with an NOx storage reduction catalyst an oxidation catalyst which is arranged downstream of the NOx storage reduction catalyst an exhaust gas tank which is connected to the engine exhaust passage between the NOx storage reduction catalyst and the oxidation catalyst, and a switching valve which closes the engine exhaust passage toward the oxidation catalyst and makes the exhaust gas flow into the tank. When making the air-fuel ratio of the exhaust gas which flows into the NOx storag...

대표
청구항
▼

1. An exhaust purification system of an internal combustion engine which is provided with an NOx storage reduction catalyst which is arranged in an engine exhaust passage, stores NOx which is contained in exhaust gas when an air-fuel ratio of inflowing exhaust gas is lean, and releases the stored NOx when the air-fuel ratio of the inflowing exhaust gas becomes a stoichiometric air-fuel ratio or rich,an oxidation catalyst which is arranged downstream of the NOx storage reduction catalyst in the engine exhaust passage,an exhaust gas tank which is connected to the engine exhaust passage between the NOx storage reduction catalyst and the oxidation catalyst, anda flow path changing device which closes the engine exhaust passage from the NOx storage reduction catalyst toward the oxidation catalyst and makes the exhaust gas flow into the tank, whereinwhen making the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst the stoichiometric air-fuel ratio or rich, the system closes the engine exhaust passage toward the oxidation catalyst and changes the flow path so that the exhaust gas flows into the tank and at least part of the stoichiometric air-fuel ratio or rich air-fuel ratio exhaust gas which flows out from the NOx storage reduction catalyst is stored in the tank. 2. An exhaust purification system of an internal combustion engine as set forth in claim 1, which switches the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst from the stoichiometric air-fuel ratio or rich state to the lean state and opens the engine exhaust passage toward the oxidation catalyst so as to mix exhaust gas which was stored in the tank and exhaust gas which flows out from the NOx storage reduction catalyst while feeding exhaust gas to the oxidation catalyst. 3. An exhaust purification system of an internal combustion engine as set forth in claim 1, wherein the tank is formed so as to extend along the engine exhaust passage, andthe oxidation catalyst is arranged inside of the tank. 4. An exhaust purification system of an internal combustion engine as set forth in claim 2, wherein the system is provided with a pressure detection device which detects a pressure inside the tank,the system is formed so as to perform control for repeating a period where the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst is the stoichiometric air-fuel ratio or rich and a period where the air-fuel ratio is lean,the system is formed so that when the flow path changing device opens the engine exhaust passage toward the oxidation catalyst, it is possible to adjust the flow rate of the exhaust gas which flows into the oxidation catalyst,the system estimates a pressure drop speed in the tank in the time period when opening the engine exhaust passage toward the oxidation catalyst and uses the estimated pressure drop speed and a predetermined time period for maintaining the air-fuel ratio of the exhaust gas lean as the basis so as to adjust the flow rate of the exhaust gas flowing into the oxidation catalyst so that the pressure of the tank falls to the pressure before storing of the exhaust gas before the time of the end of the time period for maintaining the air-fuel ratio of the exhaust gas lean. 5. An exhaust purification system of an internal combustion engine as set forth in claim 2, wherein the system is an exhaust purification system of an internal combustion engine which makes the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst the stoichiometric air-fuel ratio or rich when the engine body should be stopped, and whichcloses the engine exhaust passage toward the oxidation catalyst when stoichiometric air-fuel ratio or rich exhaust gas flows into the NOx storage reduction catalyst and stops the engine body in the state with the engine exhaust passage closed andopens the flow path toward the oxidation catalyst when restarting the engine body. 6. An exhaust purification system of an internal combustion engine which is provided with an NO storage reduction catalyst which is arranged in an engine exhaust passage, stores NOx which is contained in exhaust gas when an air-fuel ratio of inflowing exhaust gas is lean, and releases the stored NOx when the air-fuel ratio of the inflowing exhaust gas becomes a stoichiometric air-fuel ratio or rich,an oxidation catalyst which is arranged downstream of the NOx storage reduction catalyst in the engine exhaust passage,an exhaust gas tank which is connected to the engine exhaust passage between the NOx storage reduction catalyst and the oxidation catalyst, anda flow path changing device which closes the engine exhaust passage from the NOx storage reduction catalyst toward the oxidation catalyst and makes the exhaust gas flow into the tank, wherein,in the period when the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst is lean, the system closes the engine exhaust passage toward the oxidation catalyst and switches the flow path so that the exhaust gas flows into the tank so as to store at least part of the lean air-fuel ratio exhaust gas which flows out from the NO storage reduction catalyst in the tank, and,when making the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst the stoichiometric air-fuel ratio or rich, the system opens the engine exhaust passage toward the oxidation catalyst and mixes exhaust gas which was stored in the tank and exhaust gas which flows out from the NOx storage reduction catalyst while feeding exhaust gas to the oxidation catalyst. 7. An exhaust purification system of an internal combustion engine as set forth in claim 6, wherein the tank is formed so as to extend along the engine exhaust passage, andthe oxidation catalyst is arranged inside of the tank. 8. An exhaust purification system of an internal combustion engine as set forth in claim 6, wherein, when an engine speed falls and thereby a flow rate of exhaust gas which flows into the NOx storage reduction catalyst is reduced, the flow path changing device is used to store lean air-fuel ratio exhaust gas in the tank, and,after the flow rate of exhaust gas which flows into the NOx storage reduction catalyst is reduced, then becomes substantially constant, the system makes the air-fuel ratio of the exhaust gas which flows into the NOx storage reduction catalyst the stoichiometric air-fuel ratio or rich and opens the engine exhaust passage toward the oxidation catalyst.

이 특허에 인용된 특허 (6)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	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

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Exhaust purification system of internal combustion engine

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (6)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Exhaust purification system of internal combustion engine

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (6)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼