Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Clutch control
Patent
1995-09-18
1998-11-17
Louis-Jacques, Jacques H.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Clutch control
701 68, 701 69, 701 66, 701 89, 180248, 180247, 180233, 180197, 477 35, 477 36, 477903, 477904, G06F 770, B60K 17344
Patent
active
058390847
ABSTRACT:
A driving-torque control system for a four-wheel-drive vehicle includes a transfer clutch employed in a transfer of the four-wheel-drive vehicle for varying a distribution ratio of driving torque between front and rear road wheels depending on a front-and-rear wheel revolution-speed difference. A calculation unit derives a command value of the engaging force of the transfer clutch from the front-and-rear wheel revolution-speed difference. A load-condition detection unit detects an input load condition of the transfer clutch, on the basis of the front-and-rear wheel revolution-speed difference and the command value of the engaging force. A comparing unit compares the input load condition detected by the load-condition detection unit with a predetermined threshold. A compensation unit compensates the engaging force of the transfer clutch so that the transfer clutch is held in a completely engaged state for a predetermined holding time duration, when the input load condition exceeds the predetermined threshold.
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Hara Tomoyuki
Takasaki Toshiharu
Louis-Jacques Jacques H.
Nissan Motor Co,. Ltd.
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