Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Control of power distribution between vehicle axis or wheels
Reexamination Certificate
2007-03-27
2007-03-27
Nguyen, Tan Q. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Control of power distribution between vehicle axis or wheels
C701S074000, C701S093000, C192S054100, C180S247000
Reexamination Certificate
active
11337047
ABSTRACT:
In the case of a control system for a vehicle with at least part-time four-wheel drive, having a control unit which detects or determines quantities proportional to the wheel speeds of all wheels and the vehicle speed, and by means of which the driving torque of a drive unit can be variably distributed to primary driving wheels, which are permanently connected with the drive unit, and to secondary driving wheels which, if required, can be connected with the drive unit, for the distribution of the driving torque, a clutch torque of a transfer clutch arranged between the drive unit and the secondary driving wheels is set by means of the control unit, and the control unit is further developed such that the clutch torque is increased if a difference is detected between the wheel speed of a wheel and the vehicle speed and/or if a difference is detected between the two wheels speeds of the wheels of at least one vehicle side.
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International Search Report dated Nov. 11, 2004 w/ English Translation of relevant portion (Four (4) pages).
German Office Action dated Mar. 17, 2004 w/ English Translation of relevant portion (Five (5) pages).
Billig Christian
Fischer Gerhard
Bayerische Motoren Werke Aktiengesellschaft
Crowell & Moring LLP
Nguyen Tan Q.
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