Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-10-19
2009-11-03
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
Reexamination Certificate
active
07610901
ABSTRACT:
A method for detecting the opening of a passive pressure control valve, which conducts fuel from a common rail system back to a fuel tank, in which the rail pressure (pCR) is automatically controlled by calculating a correcting variable for acting on the controlled system from a rail pressure control deviation via a pressure controller, and in which, starting from a steady-state rail pressure in normal operation, a load reduction is detected when the rail pressure exceeds a first limit. Opening of the pressure control valve is detected after the first limit is exceeded if a steady-state operating state is subsequently detected again, and if a characteristic of the closed-loop control system deviates significantly from a reference value.
REFERENCES:
patent: 6578553 (2003-06-01), Schubert et al.
patent: 7017549 (2006-03-01), Döelker
patent: 7451038 (2008-11-01), Kosiedowski et al.
patent: 2004/0069278 (2004-04-01), Okamoto et al.
patent: 19626689 (1997-11-01), None
patent: 19937962 (2001-02-01), None
patent: 10330466 (2004-10-01), None
patent: 102006040441 (2006-10-01), None
DE19626689 (Guentert Josef et al.) Nov. 20, 1997 (abstract). [online] [retrieved on Feb. 17, 2009]. Retrieved from: EPO website.
Bucher Martin
Dölker Armin
Kosiedowski Uwe
Wachter Volker
Gimie Mahmoud
Lucas & Mercanti LLP
MTU Friedrichshafen
Stoffel Klaus P.
LandOfFree
Method for detecting the opening of a passive pressure... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting the opening of a passive pressure..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting the opening of a passive pressure... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4138153