Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2006-08-15
2006-08-15
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C123S1980DA
Reexamination Certificate
active
07089920
ABSTRACT:
In a diagnostic apparatus for an evaporative emission control system having a fuel tank is hermetically sealed under negative pressure on the basis of target inner pressure, and leak of the evaporative emission control system is judged when a diagnosis value based on a pressure variation amount after the hermetical sealing under at least negative pressure is larger than a judgment value, ECU estimates an evaporated fuel generated amount on the basis of a tank inner pressure value at the start time of a diagnosis. When the evaporated fuel generated amount thus estimated is large, target inner pressure Pteb is set to a high value, and when the evaporated fuel generated amount thus estimated is small, the target inner pressure Pteb is set to a low value.
REFERENCES:
patent: 5230319 (1993-07-01), Otsuka et al.
patent: 5758628 (1998-06-01), Wada
patent: 5765540 (1998-06-01), Ishii et al.
patent: 6289880 (2001-09-01), Yamaguchi et al.
patent: 6405718 (2002-06-01), Yoshioka et al.
patent: 6782874 (2004-08-01), Matsumoto
patent: 2001/0032625 (2001-10-01), Fabre
patent: 2001/0032626 (2001-10-01), Fabre
patent: 2001/0054415 (2001-12-01), Hanai et al.
patent: 2002/0112703 (2002-08-01), Fujimoto et al.
patent: 2002/0179066 (2002-12-01), Matsumoto et al.
patent: 2005/0044940 (2005-03-01), Nakoji
patent: 2005/0044941 (2005-03-01), Nakoji
patent: 2005/0241377 (2005-11-01), Takahashi
patent: 2001-041116 (2001-02-01), None
Nakoji Yasushi
Takahashi Daisuke
Fuji Jukogyo Kabushiki Kaisha
Miller Carl S.
Smith , Gambrell & Russell, LLP
LandOfFree
Diagnostic apparatus for evaporative emission control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diagnostic apparatus for evaporative emission control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnostic apparatus for evaporative emission control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3624071