Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2008-03-21
2009-10-27
Solis, Erick (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406450, C123S090150
Reexamination Certificate
active
07607416
ABSTRACT:
To improve power performance while avoiding or suppressing surging, an engine control device comprises a VVT mechanism for varying the open/close timing of an intake valve, and the occurrence of surging is determined by comparing an engine rotation variation width with a surge determination threshold. When it is determined that surging has occurred, an ignition timing surge correction amount is set at a value that has been corrected in an advancement direction, and the ignition timing is corrected in the advancement direction by the ignition timing surge correction amount. Further, a VVT surge correction amount by which the open/close timing of the intake valve is corrected using the intake VVT mechanism is set at a value that has been corrected in a retardation direction, and a control current value for operating the intake VVT mechanism is corrected in the retardation direction by the VVT surge correction amount.
REFERENCES:
patent: 5660157 (1997-08-01), Minowa et al.
patent: 5884605 (1999-03-01), Nagaishi et al.
patent: 6425371 (2002-07-01), Majima
patent: 6993427 (2006-01-01), Ueda
patent: 7331317 (2008-02-01), Yasui et al.
patent: 2001/0002591 (2001-06-01), Majima
patent: 2004/0237917 (2004-12-01), Yasui et al.
patent: 2005/0000492 (2005-01-01), Nakai et al.
patent: 61-187528 (1986-08-01), None
patent: 61-190147 (1986-08-01), None
patent: 06-330776 (1994-11-01), None
patent: 2004-360552 (2004-12-01), None
Fuji Jukogyo Kabushiki Kaisha
Smith , Gambrell & Russell, LLP
Solis Erick
LandOfFree
Engine control device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Engine control device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine control device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4137649