Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication
Reexamination Certificate
2008-07-29
2008-07-29
Keith, Jack W. (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
C701S029000, C903S952000
Reexamination Certificate
active
10605288
ABSTRACT:
A method for validating engine and motor velocities in a vehicle having an engine and two motors is provided. The method validates the velocities without using two speed sensors for each device. The velocities of the engine and the two motors are first determined, and then mathematically combined using known velocity relationships based on the vehicle architecture. The mathematical combination of the velocities is then compared to a first pre-determined speed range, and if the mathematical combination is within the predetermined range, the velocities of the engine and the two motors are validated. If the validation of the engine and the two motors fails, additional equations can be used utilizing additional inputs, including the vehicle speed as measured at the vehicle wheels. In this way, the velocities of one or more of the torque generating devices in the vehicle may be validated.
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Badreddine Bader M.
Benz Gregory H.
Boesch Mathew A.
Garg Vijay K.
Raftari Abbas
Brooks & Kushman P.C.
Ford Global Technologies LLC
Keith Jack W.
Kelley David B.
Pipala Edward
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