Securing and diagnosing the vehicle speed input and...

Details Securing and diagnosing the vehicle speed input and... Securing and diagnosing the vehicle speed input and...

2009-01-30

2011-10-18

Nguyen, Kim T (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle diagnosis or maintenance indication

Reexamination Certificate

active

08041478

ABSTRACT:
A vehicle speed module includes a speed arbitration module that receives at least two of a wheel speed, a transmission output speed (TOS), and an electric motor speed (EMS), and that determines a vehicle speed based on a comparison of the at least two of the wheel speed, the TOS, and the EMS. A speed diagnostic module selectively diagnoses a fault in one of a wheel speed sensor, a TOS sensor, and an EMS sensor based on the comparison.

REFERENCES:
patent: 6295487 (2001-09-01), Ono et al.
patent: 2005/0080527 (2005-04-01), Tao et al.
patent: 69202128 (1995-08-01), None
patent: 102006040297 (2008-03-01), None
patent: 0531870 (1993-03-01), None

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