TORQUE DISTRIBUTION CONTROLLER OF FOUR-WHEEL DRIVE VEHICLE

摘要

PROBLEM TO BE SOLVED: To properly distribute torque from an engine to front and rear wheels on an ascending slope. SOLUTION: Torque from an engine 1 is directly transmitted through a transmission 2 to front wheels and further through a transfer 4 to rear wheels 9. A controller 20 includes a driving shaft torque calculating part 40 for calculating torque applied to a front wheel drive shaft 8a, a slope calculating part 50 for calculating the slope of the place of traveling, a transmitted torque calculating part 29 for correcting basic transmitted torque and causing the corrected basic transmitted torque to be target transmitted torque according to drive shaft torque Td calculated by the drive shaft torque calculating part 40 and a slopeθcalculated by the slope calculating part 50 and a hydraulic control valve 5 for operating the transfer 4 according to the objective transmitted torque calculated by the transmitted torque calculating part 29.