Exhaust system for an internal combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01N-003/00
F01N-001/00
출원번호
US-0022334
(2008-01-30)
등록번호
US-8230676
(2012-07-31)
우선권정보
DE-10 2007 005 497 (2007-01-30)
발명자
/ 주소
Harrer, Peter
출원인 / 주소
J. Eberspaecher GmbH & Co., KG
대리인 / 주소
Howard IP Law Group, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
12
초록▼
An exhaust system for an internal combustion engine, includes an exhaust line, an exhaust gas treatment device, an injection device arranged upstream from the exhaust gas treatment device for injecting a liquid educt into the exhaust line and a mixing and/or evaporation device for the sprayed educt
An exhaust system for an internal combustion engine, includes an exhaust line, an exhaust gas treatment device, an injection device arranged upstream from the exhaust gas treatment device for injecting a liquid educt into the exhaust line and a mixing and/or evaporation device for the sprayed educt situated downstream from the injection device and upstream from the exhaust gas treatment device. At least one section of the exhaust line carrying exhaust gas is formed by an exhaust pipe that has an end section arranged downstream from the injection device and upstream from the exhaust gas treatment device. The mixing and/or evaporation device is integrally formed on the end section of the exhaust pipe.
대표청구항▼
1. An exhaust system for an internal combustion engine, said exhaust system comprising: an exhaust line that carries exhaust gas away from the internal combustion engine;at least one exhaust gas treatment device arranged in said exhaust line;an injection device arranged on said exhaust line upstream
1. An exhaust system for an internal combustion engine, said exhaust system comprising: an exhaust line that carries exhaust gas away from the internal combustion engine;at least one exhaust gas treatment device arranged in said exhaust line;an injection device arranged on said exhaust line upstream from said exhaust gas treatment device for injection of a liquid educt into said exhaust line;a mixing and/or evaporation device arranged in said exhaust line downstream from said injection device and upstream from said exhaust gas treatment device for the injected educt,wherein at least one section of said exhaust line carrying the exhaust gas is formed by an exhaust pipe, said exhaust pipe having an end section arranged downstream from said injection device and upstream from said exhaust gas treatment device, said end section protruding into another upstream or downstream neighboring pipe of said exhaust line or into a housing containing the exhaust gas treatment device,wherein said mixing and/or evaporation device is formed integrally on the end section of said exhaust pipe, andwherein said mixing and/or evaporation device comprises a plurality of baffles, said baffles are shaped so that they impose on the exhaust gas flow a swirling component about the longitudinal central axis of the exhaust pipe. 2. The exhaust system according to claim 1, wherein said baffles are formed in or on said end section of said exhaust pipe by free-cut wall sections of said exhaust pipe after a bending deformation. 3. The exhaust system according to claim 2, wherein said wall sections form the end section of said exhaust pipe. 4. The exhaust system according to claim 1, wherein said baffles are formed in the end section of said exhaust pipe by axial machining and bending deformation of wall sections of said exhaust pipe. 5. The exhaust system according to claim 4, wherein each said baffle is formed by an area of the wall section that is on the inside radially and is separated axially from the wall section by machining from its free end up to a connection point, where it develops into the wall sections. 6. The exhaust system according to claim 4, wherein said wall sections are machined from the end of said exhaust pipe. 7. The exhaust system according to claim 2, wherein said wall sections are separated from one another in a circumferential direction by axial cuts. 8. The exhaust system according to claim 2, wherein said wall sections define a plurality of gaps between said wall sections that are adjacent in the circumferential direction by free-cutting the wall sections. 9. The exhaust system according to claim 8, wherein said gaps are formed by cutting pipe parts of rectangular or triangular or trapezoidal shapes out of said exhaust pipe between the wall sections adjacent to one another in the circumferential direction. 10. An exhaust system for an internal combustion engine, said exhaust system comprising: an exhaust line that carries exhaust gas away from the internal combustion engine;at least one exhaust gas treatment device arranged in said exhaust line;an injection device arranged on said exhaust line upstream from said exhaust gas treatment device for injection of a liquid educt into said exhaust line;a mixing and/or evaporation device arranged in said exhaust line downstream from said injection device and upstream from said exhaust gas treatment device for the injected educt, said mixing and/or evaporation device comprises a plurality of baffles being formed in or on said end section of said exhaust pipe by free-cut wall sections of said exhaust pipe after a bending deformation in a helical pattern into the cross section of said exhaust pipe,wherein said wall sections are separated from one another in a circumferential direction by axial cuts, andwherein at least one section of said exhaust line carrying the exhaust gas is formed by an exhaust pipe, said exhaust pipe having an end section arranged downstream from said injection device and upstream from said exhaust gas treatment device, said end section protruding into another upstream or downstream neighboring pipe of said exhaust line or into a housing containing the exhaust gas treatment device, andwherein said mixing and/or evaporation device is formed integrally on the end section of said exhaust pipe. 11. The exhaust system according to claim 10 wherein said baffles are bent so that the one cut edge or the longitudinal side is straight and is inclined radially inward with respect to the axial direction, while the other cut edge or longitudinal side is straight and extends axially and is also inclined radially inward with respect to the axial direction but at a different angle. 12. An exhaust system for an internal combustion engine, said exhaust system comprising: an exhaust line that carries exhaust gas away from the internal combustion engine;at least one exhaust gas treatment device arranged in said exhaust line;an injection device arranged on said exhaust line upstream from said exhaust gas treatment device for injection of a liquid educt into said exhaust line;a mixing and/or evaporation device arranged in said exhaust line downstream from said injection device and upstream from said exhaust gas treatment device for the injected educt,wherein at least one section of said exhaust line carrying the exhaust gas is formed by an exhaust pipe, said exhaust pipe having an end section arranged downstream from said injection device and upstream from said exhaust gas treatment device, said end section protruding into another upstream or downstream neighboring pipe of said exhaust line or into a housing containing the exhaust gas treatment device,wherein said mixing and/or evaporation device is formed integrally on the end section of said exhaust pipe and comprises a plurality of baffles, said baffles being formed in or on said end section of said exhaust pipe by free-cut wall sections of said exhaust pipe after a bending deformation, andwherein said baffles are shaped so that they impose on the exhaust gas flow a swirling component about the longitudinal central axis of the exhaust pipe. 13. An exhaust system for an internal combustion engine, said exhaust system comprising: an exhaust line that carries exhaust gas away from the internal combustion engine;at least one exhaust gas treatment device arranged in said exhaust line;an injection device arranged on said exhaust line upstream from said exhaust gas treatment device for injection of a liquid educt into said exhaust line;a mixing and/or evaporation device arranged in said exhaust line downstream from said injection device and upstream from said exhaust gas treatment device for the injected educt,wherein at least one section of said exhaust line carrying the exhaust gas is formed by an exhaust pipe, said exhaust pipe having an end section arranged downstream from said injection device and upstream from said exhaust gas treatment device, said end section protruding into another upstream or downstream neighboring pipe of said exhaust line or into a housing containing the exhaust gas treatment device,wherein said mixing and/or evaporation device is formed integrally on the end section of said exhaust pipe and comprises a plurality of baffles, said baffles being formed in or on said end section of said exhaust pipe by free-cut wall sections of said exhaust pipe after a bending deformation, andwherein said baffles are shaped so that with their free ends they form a propeller-shaped passage for the exhaust gas flow.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (12)
Ranendra K. Bose, Anti-air pollution & energy conservation system for automobiles using leaded or unleaded gasoline, diesel or alternate fuel.
Liu, Z. Gerald; Zuroski, Michael T.; Bremigan, Cary D.; Kicinski, Kenneth J.; Cheng, C. Raymond, Exhaust aftertreatment device, including chemical mixing and acoustic effects.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.