Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2011-07-12
2011-07-12
Cheung, Mary (Department: 4128)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S001000, C701S029000, C701S051000, C701S065000, C702S173000, C702S174000, C702S175000
Reexamination Certificate
active
07979185
ABSTRACT:
A method for determining a motor vehicle mass which is implemented in conjunction with shifting an automated shift transmission from a current gear to a desired gear. In determining the mass, a value force and movement parameters are determined partly before or after the shift operation and partly during it. For the more rapid and accurate determination of mass, the drive-wheel-related traction force of the drive engine before and after the shift F_zug_vor, F_zug_nach, the longitudinal acceleration of the vehicle before and after the shift, a_zug_vor, a_zug_nach, and the acceleration a_roll determined in the traction-force-free phase during the shift are determined, and from these and in accordance with the equation m=F_zug/(a_zug−a_roll), a first mass value m_vor=F_zug_vor/(a_zug_vor−a_roll) is calculated for the beginning of the shift and a second mass value m_nach=F_zug_nach/(a_zug_nach−a_roll) is calculated for the end of the shift.
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Sauter Ingo
Wolfgang Werner
Würthner Maik
Cheung Mary
Davis & Bujold P.L.L.C.
Do Truc M
ZF Friedrichshafen AG
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