Abstract: In the reverse braking control of the vehicle, a master cylinder pressure Pmc generated according to the driver's pressing force of a brake pedal is pressurized by pumps and is supplied as a wheel cylinder pressure of rear wheels. The pressurized master cylinder pressure Pmc is reduced by the on-off control of pressure reducing solenoid valves and is supplied as a wheel cylinder pressure of front wheels. This ensures application of the braking force to the front wheels and the rear wheels at a front-rear ratio having a greater rear wheel fraction than the front-rear ratio during the forward braking control. A greater braking force is thus applied to the rear wheels, which are located at the front in the moving direction of the reverse braking control. This ensures generation of a sufficient braking force and effectively prevents the lock of the front wheels.

Abstract: When vehicle speed V decreases to or below a preset reference vehicle speed Vref during output of regenerative braking force from a motor in response to the driver's depression of a brake pedal, the vehicle of the invention performs a replacement pre-operation (steps S190 to S220 and S160) and a replacement operation (steps S240 to S280 and S160) and controls the motor and an electronically controlled hydraulic braking system to satisfy a braking force demand BF*. The replacement pre-operation actuates and controls pumps included in a brake actuator of the electronically controlled hydraulic braking system to exert their proper pressurization performance. The replacement operation decreases the regenerative braking force output from the motor and enhances a pressure increase by the pumps to replace the regenerative braking force with a pressure increase-based braking force BFpp.

Abstract: A braking and driving force control apparatus and method are for a vehicle having a frictional braking device for applying a braking force individually to each wheel and a regenerative braking device for generating a common braking force to a plurality of wheels. A target braking force is calculated on the basis of a driver's braking operation or traction control. The regenerative braking device is controlled so as to achieve the smallest target braking force of the target braking forces of the plurality of wheels. The frictional braking device is controlled so as to achieve the target braking force of another wheel, different from the wheel having the smallest target braking force, in cooperation with the regenerative braking device. Thus, the efficiency of regenerating energy is enhanced.

Abstract: A braking force control apparatus and method control a braking force of a motor vehicle that has (a) regenerative braking devices for front wheels and rear wheels, respectively, and (b) a friction braking device for each of the front wheels and the rear wheels. A target braking force of the front wheels and a target braking force of the rear wheels are calculated, based on a braking requirement made by a driver of the vehicle and a ratio of braking forces of the front wheels and the rear wheels. Initially, the regenerative braking devices are controlled to generate regenerative braking forces at the front wheels and the rear wheels, and then, if necessary, the friction braking device is controlled to generate a friction braking force at each of the front wheels and rear wheels, so that a total braking force applied to the front wheels and a total braking force applied to the rear wheels are controlled to the front-wheel target braking force and the rear-wheel target braking force, respectively.

Abstract: A vehicle drive force control system reduces front-wheel drive force and rear-wheel drive force during unstable running of a vehicle. The front-wheel drive force is reduced with an increase in the running instability, and the front-wheel and rear-wheel drive forces are controlled during low-speed vehicle turning while traction control is effected for at least one of the front wheels. The result is that the front-wheel drive force can be reduced with a decrease in friction coefficient &mgr; of a road surface, while the rear-wheel drive force can be reduced with an increase in turning angle of the vehicle and does not exceed the front-wheel drive force.

Abstract: In a brake system of a hybrid type vehicle equipped with a front regeneration brake workable at a first regeneration efficiency, a rear regeneration brake workable at a second regeneration efficiency different from the first regeneration efficiency, a front friction brake, a rear friction brake and a control device for operating the front and rear regeneration brakes and the front and rear friction brakes, when the vehicle is braked at a controlled braking force, either of the front and rear regeneration brake workable at a higher regeneration efficiency than the other applies as much a braking force to the corresponding front or rear wheels as available thereby under a condition that a ratio of a braking force applied to the rear wheels to a braking force applied to the front wheels is not larger than a value predetermined therefor, with a remainder of the controlled braking force, if any, being applied by at least one of the other of the front and rear regeneration brakes and the front and rear friction bra

Abstract: A braking and driving force control apparatus and method are for a vehicle having a frictional braking device for applying a braking force individually to each wheel and a regenerative braking device for generating a common braking force to a plurality of wheels. A target braking force is calculated on the basis of a driver's braking operation or traction control. The regenerative braking device is controlled so as to achieve the smallest target braking force of the target braking forces of the plurality of wheels. The frictional braking device is controlled so as to achieve the target braking force of another wheel, different from the wheel having the smallest target braking force, in cooperation with the regenerative braking device. Thus, the efficiency of regenerating energy is enhanced.

Abstract: A vehicle drive force control system reduces front-wheel drive force and rear-wheel drive force during unstable running of a vehicle. The front-wheel drive force is reduced with an increase in the running instability, and the front-wheel and rear-wheel drive forces are controlled during low-speed vehicle turning while traction control is effected for at least one of the front wheels. The result is that the front-wheel drive force can be reduced with a decrease in friction coefficient &mgr; of a road surface, while the rear-wheel drive force can be reduced with an increase in turning angle of the vehicle and does not exceed the front-wheel drive force.

Abstract: A braking force control apparatus and method control a braking force of a motor vehicle that has (a) regenerative braking devices for front wheels and rear wheels, respectively, and (b) a friction braking device for each of the front wheels and the rear wheels. A target braking force of the front wheels and a target braking force of the rear wheels are calculated, based on a braking requirement made by a driver of the vehicle and a ratio of braking forces of the front wheels and the rear wheels. Initially, the regenerative braking devices are controlled to generate regenerative braking forces at the front wheels and the rear wheels, and then, if necessary, the friction braking device is controlled to generate a friction braking force at each of the front wheels and rear wheels, so that a total braking force applied to the front wheels and a total braking force applied to the rear wheels are controlled to the front-wheel target braking force and the rear-wheel target braking force, respectively.