Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-01-24
2006-01-24
Argenbright, Tony M. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C701S101000, C701S103000, C701S104000, C123S674000, C073S113010, C073S117020, C073S117020, C073S118040
Reexamination Certificate
active
06990402
ABSTRACT:
There is provided a control system capable of realizing a highly robust control having a large margin of stability. The ECU of the control system controls the air-fuel ratio of exhaust gases emitted from the first to fourth cylinders. The ECU2estimates an estimation value of a detected air-fuel ratio, from a model defining a relation between the estimation value and a plurality of simulation values, and identifies an intake air amount variation coefficient such the estimation value becomes equal to a detected air-fuel ratio. The ECU calculates an air-fuel ratio variation correction coefficient according to the identified air-fuel ratio variation coefficient, on a cylinder-by-cylinder basis, and a learned correction value of the air-fuel ratio variation correction coefficient, on a cylinder-by-cylinder basis, and corrects a basic fuel injection amount by the air-fuel ratio variation correction coefficient and the learned correction value, on a cylinder-by-cylinder basis, to thereby calculate a final fuel injection amount.
REFERENCES:
patent: 5794604 (1998-08-01), Suzuki et al.
patent: 6266605 (2001-07-01), Yasui et al.
Mizuno Takahide
Takizawa Osamu
Yasui Yuji
Argenbright Tony M.
Hoang Johnny H.
Honda Motor Co. Ltd.
Squire Sanders & Dempsey L.L.P.
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