Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Reexamination Certificate
2006-11-21
2006-11-21
Dolinar, Andrew M. (Department: 3747)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
C060S276000, C073S118040
Reexamination Certificate
active
07139658
ABSTRACT:
An engine ECU executes a program including the steps of: detecting an air intake; subtracting an air fuel ratio detected by an upstream air fuel ratio sensor from that detected by a downstream air fuel ratio sensor; using the calculated air fuel ratio difference to determine a range for a lower GA range; determining a range for a higher GA range; and determining from the combination of the determined ranges of the lower and higher GA ranges whether a section A's exhaust system operates normally or has abnormality.
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Japan Institute of Invention and Innovation Technical Report No. 2003-501895, published Apr. 18, 2003.
Japan Institute of Invention and Innovation Technical Report No. 2003-501899, published Apr. 18, 2003.
Dolinar Andrew M.
Toyota Jidosha & Kabushiki Kaisha
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