Internal-combustion engines – Charge forming device
Reexamination Certificate
2006-04-25
2006-04-25
Huynh, Hai (Department: 3747)
Internal-combustion engines
Charge forming device
C123S19800E, C123S399000, C073S118040
Reexamination Certificate
active
07032573
ABSTRACT:
A system and method for indicating required maintenance of an air filter used with an internal combustion engine. The system includes a throttle plate for adjusting an amount of airflow passing into cylinders of the engine. The system includes a throttle plate position sensor and a processor. The processor is responsive to a throttle plate position signal produced by the throttle plate sensor, for determining, as a function of such throttle plate position signal, whether the air filter is in need of maintenance. When a manifold absolute pressure sensor is provided, the processor is responsive to a first reading of such manifold absolute pressure sensor taken at a first time and at a second reading of the manifold absolute pressure sensor taken at a second time, for determining, as a function of a difference between such first and second readings whether the air filter is in need of maintenance.
REFERENCES:
patent: 5205261 (1993-04-01), Betts, Jr. et al.
patent: 5429649 (1995-07-01), Robin
patent: 5562076 (1996-10-01), Madl
patent: 5604306 (1997-02-01), Schricker
patent: 5606311 (1997-02-01), Polidan et al.
patent: 5681988 (1997-10-01), Koch et al.
patent: 5744770 (1998-04-01), Moessinger et al.
patent: 6107923 (2000-08-01), Christol
patent: 6192867 (2001-02-01), Fenchel et al.
patent: 6268791 (2001-07-01), Ferris
patent: 6327902 (2001-12-01), Berry, III et al.
patent: 6505505 (2003-01-01), Henzinger et al.
patent: 6834542 (2004-12-01), Aschner et al.
patent: 6894620 (2005-05-01), Reinhardt et al.
patent: 2003/0028335 (2003-02-01), Wild et al.
patent: 2004/0178895 (2004-09-01), Pontius
patent: 2002-085592 (2002-11-01), None
patent: 2003-068305 (2003-08-01), None
patent: 2004-037719 (2004-05-01), None
Information Disclosure Statement filed herewith including the description therein entitled “Barometric Pressure (BP) Determination”.
Ford Global Technologies LLC
Huynh Hai
Sharkansky Richard M.
Voutyras Julia
LandOfFree
Method and apparatus for indicating air filter maintenance... 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 and apparatus for indicating air filter maintenance..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for indicating air filter maintenance... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3571479