Control device for hybrid four-wheel-drive vehicle and hybrid four-wheel-drive vehicle

A control device for controlling a hybrid-four-wheel-driven vehicle wherein one of the front-wheel pair and the rear-wheel pair is an engine-driven-wheel pair which is driven by an engine, and the other pair is an electric-motor-driven-wheel pair which is driven by an electric motor connected to a generator driven by said engine, said control device comprising:

• slipping detecting means for detecting slipping of said engine-driven wheels;
• and
• output control means for increasing the output of said engine corresponding to the increased output of said electric motor,
• wherein said slipping detecting means detects slipping in the event that the slippage, which is the difference in rotational speed between said engine-driven wheels and said electric-motor-driven wheels, divided by the driving speed of the vehicle, is equal to or greater than a predetermined value.

A control device for controlling a hybrid-four-wheel-driven vehicle wherein one of the front-wheel pair and the rear-wheel pair is an engine-driven-wheel pair which is driven by an engine, and the other pair is an electric-motor-driven-wheel pair which is driven by an electric motor connected to a generator driven by said engine, said control device comprising:

• slipping detecting means for detecting slipping of said engine-driven wheels;
• and
• output control means for increasing the output of said engine corresponding to the increased output of said electric motor,
• wherein said output control means further comprises:
• means for computing the present electric-motor output based upon an input current and a field-coil current of said electric motor;
• means for computing target acceleration driving force corresponding to an input acceleration request;
• means for obtaining target electric-motor output based upon said present electric-motor output and said target acceleration driving force;
• means for obtaining target engine output required for achieving said target electric-motor output;
• and
• means for controlling output of said engine and output of said electric motor according to said target engine output and said target electric-motor output.

A control device for controlling a hybrid-four-wheel-driven vehicle wherein one of the front-wheel pair and the rear-wheel pair is an engine-driven-wheel pair which is driven by an engine, and the other pair is an electric-motor-driven-wheel pair which is driven by an electric motor connected to a generator driven by said engine, said control device comprising:

• slipping detecting means for detecting slipping of said engine-driven wheels;
• and
• output control means for increasing the output of said engine corresponding to the increased output of said electric motor,
• wherein said output control means further comprises:
• effective-driving-force history computation means for obtaining history data of the effective driving force of said electric-motor driving wheels corresponding to the last slippage data for a predetermined past period;
• and
• maximum-effective-driving-force computation means for computing the maximum value of the effective driving force of said electric-motor-driven wheels based upon said history data, wherein the output of said electric motor is increased in a range determined by the maximum value of the effective driving force of said electric-motor-driven wheels.