Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-08-08
2006-08-08
Vo, Hieu T. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C073S118040
Reexamination Certificate
active
07089106
ABSTRACT:
In an in-cylinder air amount estimation apparatus and an estimation method thereof, an average value of a pressure reduction amount that is an amount of reduction in a pressure in an intake pipe in plural opening/closing cycles is employed as a pressure reduction amount for calculating an excess air amount that is considered when an in-cylinder air amount is estimated, in order to suppress a decrease in accuracy. When it is determined that a ratio of a length of a pulsation cycle of the pressure in the intake pipe to a length of the sampling cycle is less than a predetermined level, the average value is obtained using an averaging method with high accuracy as compared to an ordinary method.
REFERENCES:
patent: 6460409 (2002-10-01), Soliman et al.
patent: 6662640 (2003-12-01), Yagi
patent: (A) 2001-234798 (2001-08-01), None
patent: (A) 2002-070633 (2002-03-01), None
Toyota Jidosha & Kabushiki Kaisha
Vo Hieu T.
LandOfFree
In-cylinder air amount estimation apparatus for an internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with In-cylinder air amount estimation apparatus for an internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In-cylinder air amount estimation apparatus for an internal... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3680908