Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Reexamination Certificate
2004-10-29
2008-10-07
Nguyen, Vincent Q (Department: 2858)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
C324S429000, C324S432000, C324S433000
Reexamination Certificate
active
07432719
ABSTRACT:
An ECU performs a program. In the program, in the case where a converter is performing an operation for increasing a voltage (i.e., YES in step S102), when a difference between an estimated battery voltage VBE and a battery voltage VB has continued to be large (i.e., YES in step S104), the ECU tentatively determines that a battery voltage sensor is abnormal (S106), and stops voltage increasing control for the converter (S108). If an absolute value of a difference between a battery voltage and an output side voltage is large (i.e., YES in step S110), a difference A which is an absolute value between an estimated battery voltage and a battery voltage, and a difference B which is an absolute value between the estimated battery voltage and an output side voltage are calculated (S112). If a value obtained by subtracting the difference B from the difference A has continued to be large (i.e., YES in step S114), it is determined that the battery voltage sensor is abnormal (S116). If a voltage obtained by subtracting the difference A from the difference B has continued to be large (i.e., YE in step S118), it is determined that the output side voltage sensor is abnormal (S120).
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International Search Report, Jan. 31, 2005.
Written Opinion of International Searching Authority, Jan. 31, 2005.
Kenyon & Kenyon LLP
Nguyen Vincent Q
Toyota Jidosha & Kabushiki Kaisha
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