Method and system for controlling an engine during tunneling operation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-025/03
F02D-041/02
F02D-041/14
F02D-041/00
F02D-013/02
F02M-025/07
출원번호
US-0186641
(2011-07-20)
등록번호
US-9074542
(2015-07-07)
발명자
/ 주소
Henry, Luke
Mischler, James Robert
출원인 / 주소
General Electric Company
대리인 / 주소
GE Global Patent Operation
인용정보
피인용 횟수 :
1인용 특허 :
24
초록▼
Various methods and systems are provided for an engine in a vehicle, the engine having an intake and an exhaust. In one example, a method includes determining the vehicle is under tunneling operation in response to one or more of an intake gas constituent and an exhaust gas constituent. The method f
Various methods and systems are provided for an engine in a vehicle, the engine having an intake and an exhaust. In one example, a method includes determining the vehicle is under tunneling operation in response to one or more of an intake gas constituent and an exhaust gas constituent. The method further comprises adjusting one or more operating parameters in response to the determination of tunneling operation.
대표청구항▼
1. A method for controlling an engine in a vehicle via an electronic device, the engine having an intake and an exhaust, comprising: determining if the vehicle is under tunneling operation in response to an intake gas constituent;if tunneling operation is not confirmed, adjusting an engine exhaust g
1. A method for controlling an engine in a vehicle via an electronic device, the engine having an intake and an exhaust, comprising: determining if the vehicle is under tunneling operation in response to an intake gas constituent;if tunneling operation is not confirmed, adjusting an engine exhaust gas recirculation amount in response to exhaust nitrogen oxide concentration; andif tunneling operation is confirmed, adjusting the engine exhaust gas recirculation amount to zero percent. 2. The method of claim 1, wherein the intake gas constituent is oxygen, and wherein the determination of tunneling operation is based on an oxygen concentration in the intake of the engine falling below a threshold oxygen concentration. 3. The method of claim 1, wherein the intake gas constituent is nitrogen oxide, and wherein the determination of tunneling operation is based on a nitrogen oxide concentration in the intake of the engine exceeding a threshold nitrogen oxide concentration. 4. The method of claim 1, wherein the determination of tunneling operation is further based on an oxygen concentration in the exhaust of the engine falling below a threshold oxygen concentration. 5. The method of claim 1, wherein the determination of tunneling operation is further based on a nitrogen oxide concentration in the exhaust of the engine falling below a nitrogen oxide threshold concentration. 6. The method of claim 1, further comprising adjusting variable valve timing if tunneling operation is confirmed. 7. The method of claim 1, further comprising determining a tunnel ambient exhaust gas recirculation amount based on a concentration of the intake gas constituent, and wherein adjusting the engine exhaust gas recirculation amount includes reducing the engine exhaust gas recirculation amount proportional to or relative to an increase in the tunnel ambient exhaust gas recirculation amount. 8. A method for an engine in a vehicle, comprising: determining if an intake gas constituent concentration passes a threshold concentration;indicating the vehicle is under tunneling operation in response to the intake gas constituent concentration passing the threshold concentration; andreducing an engine exhaust gas recirculation amount in response to the indication of tunneling operation. 9. The method of claim 8, further comprising advancing a closing timing of an intake valve of the engine in response to the indication of tunneling operation. 10. The method of claim 8, further comprising determining a tunnel ambient exhaust gas recirculation amount based on the intake gas constituent concentration or an exhaust gas constituent concentration. 11. The method of claim 10, further comprising reducing the engine exhaust gas recirculation amount proportional to or relative to an increase in the tunnel ambient exhaust gas recirculation amount. 12. The method of claim 8, wherein an intake gas constituent is one of oxygen, nitrogen oxide, or carbon dioxide. 13. The method of claim 8, further comprising reducing the engine exhaust gas recirculation amount by a predetermined amount. 14. The method of claim 8, further comprising reducing the engine exhaust gas recirculation amount based on an operating parameter. 15. A system for a vehicle, comprising: an engine, the engine including one or more donor cylinders and a plurality of non-donor cylinders;an engine exhaust gas recirculation system coupled to the engine to route engine exhaust from the one or more donor cylinders to an intake passage of the engine;an intake gas constituent sensor disposed in the intake passage;an exhaust gas constituent sensor disposed in an exhaust passage of the engine; anda controller configured to identify an intake gas constituent concentration via the intake gas constituent sensor and an exhaust gas constituent concentration via the exhaust gas constituent sensor, to indicate tunneling operation of the vehicle in response to one or more of the intake gas constituent concentration and the exhaust gas constituent concentration passing a threshold concentration, and to reduce an engine exhaust gas recirculation amount in response to the indication of tunneling operation. 16. The system of claim 15, wherein the engine is configured for Miller cycle operation, and the controller is further configured to adjust variable valve timing to reduce the Miller cycle operation in response to the indication of tunneling operation. 17. The system of claim 16, wherein the controller is further configured to reduce the Miller cycle operation based on an operating parameter. 18. The system of claim 15, wherein the engine exhaust gas recirculation system includes at least one exhaust gas recirculation valve, and the controller is configured to adjust the at least one exhaust gas recirculation valve to reduce the engine exhaust gas recirculation amount. 19. The system of claim 15, wherein the controller is further configured to adjust fueling of the one or more donor cylinders to reduce the engine exhaust gas recirculation amount. 20. The system of claim 15, wherein the intake gas constituent sensor is configured to detect nitrogen oxide or oxygen, and wherein the exhaust gas constituent sensor is configured to detect nitrogen oxide or oxygen. 21. The method of claim 1, wherein adjusting the engine exhaust gas recirculation amount in response to exhaust nitrogen oxide concentration comprises performing a closed-loop exhaust gas recirculation valve position adjustment based on feedback from a nitrogen oxide sensor. 22. The method of claim 1, further comprising, after the tunneling operation is complete, resuming a predetermined non-tunneling engine exhaust gas recirculation amount.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (24)
Cooper Charles E. (Erie PA) Vest Glenn E. (Erie PA), Automatic tunnel detector for a self-propelled traction vehicle.
Viele, Matthew; Tozzi, Luigi P., Method and apparatus for detecting abnormal combustion conditions in reciprocating engines having high exhaust gas recirculation.
Gallagher Michael Shawn ; Dillen Eric ; Dunsworth Vince, Method and system for controlling fuel injection timing in an engine for powering a locomotive.
Buchhop Thomas Robert (Canton MI) D\Alleva Randall (St. Clair Shores MI) Darnell Ronald Keith (Ortonville MI) Little Jack Ryan (Metamora MI) Pedersen Curtis Thomas (Fenton MI), Parametric emissions monitoring system having operating condition deviation feedback.
Kurtz, Eric Matthew; Vanderslice, John H., System and method for reducing Nox emissions during transient conditions in a diesel fueled vehicle with EGR.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.