Control device for controlling front and rear wheel drive vehicle

A control device for a front and rear wheel drive vehicle wherein one of a front wheel pair and a rear wheel pair is driven with an engine and the other one of said front wheel and rear wheel pairs is driven with an electric motor with electric power output produced by electric storage means, comprising:

• drive condition detection means for detecting drive conditions of said front and rear wheel drive vehicle;
• road surface frictional coefficient estimating means for estimating a road surface frictional coefficient;
• atmospheric temperature detection means for detecting an atmospheric temperature;
• temperature detection means for detecting a temperature of said electric storage means;
• motor drive power calculation means for calculating a drive power of said electric motor on the basis of the drive conditions detected by said drive condition detection means and the road surface frictional coefficient estimated by said road surface frictional coefficient estimating means;
• and
• control mode changeover means for changing over control modes during calculation of the drive power of said electric motor on the basis of at least one of the atmospheric temperature detected by said atmospheric temperature detection means and the temperature of the electric storage means detected by said temperature detection means.