Driving torque distribution control system for vehicle and the m

Details Driving torque distribution control system for vehicle and the m Driving torque distribution control system for vehicle and the m

1995-06-13

1998-04-21

Zanelli, Michael

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Control of power distribution between vehicle axis or wheels

701 88, 701 89, 180197, B60K 1734

Patent

active

057429170

ABSTRACT:
In a torque distribution control system of a four wheel drive vehicle, it is important to distribute a driving force properly between front and rear wheels according to friction coefficient of road surface. Especially when a vehicle runs on roads with low friction coefficients of road surface, it is very important to estimate friction coefficients of the road surface which vary every moment and to control the driving force according to the estimated friction coefficients. The present invention provides the torque distribution control system with means for estimating friction coefficients of road surface every moment based on data from a steering angle sensor, a vehicle speed sensor and a yaw rate sensor and for reflecting them on the calculation of torque distribution between front and rear wheels. Furthermore, yaw moment calculating means are provided to prevent the vehicle from tack-in phenomenon by properly controlling left and right wheels.

REFERENCES:
patent: 4936406 (1990-06-01), Tezuka et al.
patent: 4966250 (1990-10-01), Imaseki
patent: 5259476 (1993-11-01), Matsuno et al.
patent: 5262950 (1993-11-01), Nakayama
patent: 5417298 (1995-05-01), Shibahata
patent: 5450919 (1995-09-01), Shitani

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