Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2005-01-04
2005-01-04
Hirsch, Paul J. (Department: 3754)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
Reexamination Certificate
active
06837226
ABSTRACT:
An EGR fault/failure determination system for an internal combustion engine is operable to monitor a number of EGR system operational parameters and diagnose various EGR-related fault and failure statuses therefrom. For example, the system is operable to determine a number of EGR system-related fault and failure conditions by monitoring measured and command EGR position signals to determine EGR valve controller functionality, to monitor response times between fully open and closed EGR valve positions by comparing measured response times to a calibratable response time value, and to monitor in-range EGR position failures associated with fully closed and fully opened EGR valve position values. The system further includes a Kalman filter-based fault/failure isolation feature operable to isolate and identify one or more sources of EGR valve-related faults/failures.
REFERENCES:
patent: 4409948 (1983-10-01), Hasegawa et al.
patent: 4548185 (1985-10-01), Pozniak
patent: 4665882 (1987-05-01), Otobe
patent: 4881509 (1989-11-01), Ohashi et al.
patent: 4947820 (1990-08-01), Kushi
patent: 4969104 (1990-11-01), Suzuki et al.
patent: 5014203 (1991-05-01), Miyazaki et al.
patent: 5150696 (1992-09-01), Kabasin et al.
patent: 5190017 (1993-03-01), Cullen et al.
patent: 5257610 (1993-11-01), Ohuchi
patent: 5273019 (1993-12-01), Matthews et al.
patent: 5297047 (1994-03-01), Matsuno
patent: 5341300 (1994-08-01), Fujimoto
patent: 5383126 (1995-01-01), Ogawa et al.
patent: 5505174 (1996-04-01), Komoriya et al.
patent: 5508926 (1996-04-01), Wade
patent: 5639961 (1997-06-01), Lautenschutz
patent: 5675080 (1997-10-01), Wada
patent: 5703285 (1997-12-01), Shimizu et al.
patent: 5845627 (1998-12-01), Olin et al.
patent: 5934249 (1999-08-01), Nanba et al.
patent: 5964820 (1999-10-01), Miwa et al.
patent: 5970961 (1999-10-01), Kotwicki et al.
patent: 6035835 (2000-03-01), Shigihama et al.
patent: 6085732 (2000-07-01), Wang et al.
patent: 6142117 (2000-11-01), Hori et al.
Li Xiaoqui
Stepper Mark R.
Wang Yue Yun
Yang Chang
Barnes & Thornburg
Cummins Inc.
Hirsch Paul J.
LandOfFree
System for diagnosing EGR valve, actuator and sensor related... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for diagnosing EGR valve, actuator and sensor related..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for diagnosing EGR valve, actuator and sensor related... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3420330