Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle diagnosis or maintenance indication
Reexamination Certificate
2011-08-02
2011-08-02
Tran, Khoi (Department: 3664)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle diagnosis or maintenance indication
C701S001000
Reexamination Certificate
active
07991523
ABSTRACT:
Disclosed is a method of indirect tire pressure monitoring. The method includes: learning test variables (DIAG, SIDE, AXLE), which describe the rotational movements of the wheels; determining rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) from actually determined test variables and the learnt test variables; learning at least one torsion natural frequency fpfor at least one tire from the oscillation behavior of the individual tires; determining at least one shift of the torsion natural frequency Δfpfrom at least one actually determined torsion natural frequency and from the at least one learnt torsion natural frequency; and combining the rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) with the at least one shift of the torsion natural frequency fpin a joint warning strategy for detecting and warning of tire inflation pressure loss.
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Cunz Jörg
Edling Frank
Gootjes Lennert
Grieβer Martin
Hofmann Maik
Continental Teves AG & Co. oHG
Jen Ian
Tran Khoi
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