Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2011-04-05
2011-04-05
Kwon, John T (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S19800E, C701S114000
Reexamination Certificate
active
07918210
ABSTRACT:
A method for determining degraded valve operation. According to the method, valve degradation can be determined from the duration of a spark event. This method allows for the determination of both intake and exhaust valve degradation.
REFERENCES:
patent: 5492100 (1996-02-01), Ishii et al.
patent: 6386156 (2002-05-01), Stockhausen et al.
patent: 6499470 (2002-12-01), Takagi et al.
patent: 6691021 (2004-02-01), Takagi et al.
patent: 7032581 (2006-04-01), Gibson et al.
patent: 7082934 (2006-08-01), Winstead et al.
patent: 7124019 (2006-10-01), Goodell et al.
patent: 7134423 (2006-11-01), Zhu et al.
patent: 7156082 (2007-01-01), Winstead et al.
patent: 7277789 (2007-10-01), Gibson et al.
patent: 7546827 (2009-06-01), Wade et al.
patent: 7762237 (2010-07-01), Gibson et al.
patent: 2007/0234984 (2007-10-01), Kolmanovsky et al.
patent: 2010/0175463 (2010-07-01), Doering et al.
patent: 1143116 (2001-10-01), None
Czekala Michael Damian
Doering Jeffrey Allen
Gibson Alex O'Connor
McCoy James Donald
Morrow, Jr. Nelson William
Alleman Hall McCoy Russell & Tuttle LLP
Ford Global Technologies LLC
Kwon John T
Lippa Allan J.
LandOfFree
Method for determining valve degradation 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 determining valve degradation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining valve degradation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2712711