Front and rear wheel drive vehicle and control device for controlling same

The control device for the front and rear wheel drive vehicle according to claim 2, further comprising:

• distribution-ratio setting means which calculates
• EF−AF)/PU
• where
• EF=the amount of fuel consumption attained when the target drive-power is achieved with the engine drive-power;
• AF=the amount of fuel consumption which is predicted when the motor drive-power is added to the engine drive-power to achieve the target drive-power;
• and
• PU=the amount of electric power consumption when the motor drive-power is added, on the basis of the target drive-power and the vehicle speed, and sets a drive-power distribution ratio between the engine drive-power and the motor drive-power in accordance with the calculated value,
• wherein the control device controls the engine drive power and the motor drive power on the basis of the drive-power distribution ratio set by the distribution-ratio setting means.

A control device for a front and rear wheel drive vehicle having a front wheel pair and a rear wheel pair, one of which is driven with an engine and the other one of which is driven with an electric motor, comprising:

• sensor means for producing detection signals representative of operating conditions of said front and rear wheel drive vehicle;
• target drive-power setting means for setting a target drive-power of said front and rear wheel drive vehicle in response to said detection signals;
• engine drive-power setting means for setting an engine drive-power in response to said target drive-power;
• and
• motor drive-power setting means for setting a motor drive-power in response to said target drive-power,
• wherein the control device controls the engine drive-power and the motor drive-power on the basis of a distribution ratio, which is set in consideration of the target drive-power, a vehicle speed, and a ratio between a change in an amount of fuel consumption and a change in an amount of electric power consumption during an operation of the electric motor.

A front and rear wheel drive vehicle having a front wheel pair and a rear wheel pair comprising:

• an engine drivably coupled to one of said front and rear wheel pairs;
• an electric motor drivably coupled to the other one of said front and rear wheel pairs;
• sensor means for producing detection signals representative of operating conditions of said front and rear wheel drive vehicle;
• target drive-power setting means for setting a target drive-power of said front and rear wheel drive vehicle in response to said detection signals;
• engine drive-power setting means for setting an engine drive-power in response to said target drive-power;
• and
• motor drive-power setting means for setting a motor drive-power in response to said target drive-power,
• wherein the engine drive-power and the motor drive-power are controlled on the basis of a distribution ratio, which is set in consideration of the target drive-power, a vehicle speed, and a ratio between a change in an amount of fuel consumption and a change in an amount of electric power consumption during an operation of the electric motor.