DRIVING FORCE SWITCHING CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a driving force switching control device capable of enhancing drivability while suppressing fuel consumption low.

SOLUTION: The driving force switching control device is provided with a constant speed traveling determination means for determining to travel at a constant speed; a road surface condition calculation means for calculating the condition of a road surface by road surface friction coefficient and rolling resistance during traveling; and a driving system determination means for determining a driving system either the two-wheel driving or four-wheel driving according to calculation result of the road surface condition calculation means when it is determined by the constant speed traveling determination means to travel at a constant speed. The driving system determination means changes a switching threshold value of the two-wheel driving and the four-wheel driving such that an area for determining the four-wheel driving is increased accompanying with increase in the rolling resistance.

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