System for helping to regenerate a catalyzed particulate filler arranged in a motor vehicle diesel engine exhaust line
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0292765
(2002-11-13)
|
우선권정보 |
FR-2001-114672 (2001-11-13) |
발명자
/ 주소 |
|
출원인 / 주소 |
- Peugeot Citroen Automobiles SA
|
대리인 / 주소 |
Westerman, Hattori Daniels & Adrian LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
This system for helping to regenerate a catalyzed particulate filter arranged in a motor vehicle diesel engine exhaust line, said filter ( 4 ) being positioned downstream of an oxidation catalyzt ( 3 ) on the output side of the engine ( 1 ), is characterized in that it has a gas bypass circuit ( 5 )
This system for helping to regenerate a catalyzed particulate filter arranged in a motor vehicle diesel engine exhaust line, said filter ( 4 ) being positioned downstream of an oxidation catalyzt ( 3 ) on the output side of the engine ( 1 ), is characterized in that it has a gas bypass circuit ( 5 ) parallel to the terminals of the catalyzer ( 3 ) and fitted with means ( 6 ) for controlling the circulation of gases therein and in the catalyzer, in order, at the point when the regeneration of the particulate filter ( 4 ) is triggered, to divert a proportion of the gases laden with unburned hydrocarbons into the particulate filter ( 4 ) without passing via the catalyzer ( 3 ), so as to speed up the regeneration of the particulate filter.
대표청구항
▼
1. System for helping to regenerate a catalyzed particulate filter arranged in a motor vehicle diesel engine's exhaust line, said filter being positioned downstream of an oxidation catalyzer on the output side of the engine, wherein the system includes a gas bypass circuit parallel to the terminals
1. System for helping to regenerate a catalyzed particulate filter arranged in a motor vehicle diesel engine's exhaust line, said filter being positioned downstream of an oxidation catalyzer on the output side of the engine, wherein the system includes a gas bypass circuit parallel to the terminals of the catalyzer and fitted with means of controlling the circulation of the gases therein and in the catalyzer, that, at the point when regeneration of the particulate filter is cyclically triggered, triggers diversion of a proportion of the gases laden with unburned hydrocarbons into the particulate filter without passing via the catalyzer, so as to speed up the regeneration of the particulate filter, wherein the unburned hydrocarbons are obtained by post-injecting fuel into the engine's cylinders or into the exhaust line. 2. System according to claim 1, wherein the unburned hydrocarbons are obtained by post-injecting fuel into the engine's cylinders. 3. System according to claim 1, wherein the unburned hydrocarbons are obtained by post-injecting fuel into the exhaust line. 4. System according to claim 1, wherein the position of the means for controlling the gas circulation is determined from data supplied by sensors detecting the temperature and Hc content of gases upstream thereof. 5. System according to claim 1, wherein the position of the means for controlling the gas circulation is determined from maps of predetermined positions. 6. System according to claim 1, wherein the position of the means for controlling the gas circulation is determined from simulators. 7. System according to claim 1, wherein the controlling means are associated with a computer for controlling the position of said means. 8. System according to claim 1, wherein the controlling means comprise at least one proportional control unit. 9. System according to claim 1, wherein the catalyzer and the particulate filter are arranged in two separate casings in the exhaust line. 10. System according to claim 9, wherein the unburned hydrocarbons are obtained by post-injecting fuel into the engine's cylinders. 11. System according to claim 9, wherein the unburned hydrocarbons are obtained by post-injecting fuel into the exhaust line. 12. System for helping to regenerate a catalyzed particulate filter arranged in a motor vehicle diesel engine's exhaust line, said filter being positioned downstream of an oxidation catalyzer on the output side of the engine, wherein the system includes a gas bypass circuit parallel to the terminals of the catalyzer and fitted with means of controlling the circulation of the gases therein and in the catalyzer, that, at the point when regeneration of the particulate filter is cyclically triggered, triggers diversion of a proportion of the gases laden with unburned hydrocarbons into the particulate filter without passing via the catalyzer, so as to speed up the regeneration of the particulate filter, wherein the position of the means for controlling the gas circulation is determined from data supplied by sensors detecting the temperature and Hc content of gases upstream thereof. 13. System according to claim 12, wherein the catalyzer and the particulate filter are arranged in two separate casings in the exhaust line. 14. System according to claim 12, wherein the position of the means for controlling the gas circulation is determined from maps of predetermined positions. 15. System according to claim 12, wherein the position of the means for controlling the gas circulation is determined from simulators. 16. System according to claim 12, wherein the controlling means are associated with a computer for controlling the position of said means. 17. System according to claim 12, wherein the controlling means comprise at least one proportional control unit.
이 특허에 인용된 특허 (8)
-
Webb Cynthia Chaffin, Active porous medium aftertreatment control system.
-
Toshitaka Minami JP, Device for purifying exhaust gas of diesel engines.
-
Hirota Shinya,JPX ; Tanaka Toshiaki,JPX ; Ohashi Nobumoto,JPX ; Itoh Kazuhiro,JPX ; Iwasaki Eiji,JPX ; Yoshizaki Kouji,JPX, Exhaust gas purification device.
-
Kamihara Tetsuya (Yokosuka JPX), Exhaust gas purifying system for internal combustion engine.
-
Wade Wallace R. (Farmington Hills MI) Rao Vemulapalli D. N. (Bloomfield Township ; Oakland County both of MI), Filtration system for diesel engine exhaust-II.
-
Khair, Magdi K.; Webb, Cynthia C.; Bartley, Gordon J.; Sharp, Christopher A., Integrated system for controlling diesel engine emissions.
-
Murachi Mikio,JPX ; Okawara Seiji,JPX ; Kojima Koichi,JPX ; Kondo Takuya,JPX, Method for purifying exhaust gas of a diesel engine.
-
Wong Victor W. (Cambridge MA) Mogaka Zablon N. (Columbus IN), System and method for reducing particulate emissions from internal combustion engines.
이 특허를 인용한 특허 (2)
-
Rodatz,Paul; R��sel,Gerd; Zhang,Hong, Device and method for determining an adjustable variable of an internal combustion engine regulator.
-
Dalla Betta, Ralph A., Systems and methods for reducing emissions of internal combustion engines using a fuel processor bypass.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.