Abstract: The invention provides a roll-over suppressing control apparatus for a vehicle wherein appropriate braking force can be applied to a turning outer wheel in response to a situation and a rolling state of the vehicle to suppress otherwise possible roll-over of the vehicle while assuring the traveling performance. A roll parameter value detection section detects a parameter value corresponding to a rolling state of a vehicle, and a turning type decision section decides a type of turning of the vehicle. A roll-over suppressing control section controls a braking mechanism in a predetermined period so that, when the rolling state of the vehicle upon turning of the vehicle is excessive with respect to a first reference state, an amount of braking force corresponding to the magnitude of the roll parameter value and the type of turning. By the control, while the traveling performance of the vehicle is assured, roll-over of the vehicle can be suppressed effectively to assure the stability of the vehicle.

Abstract: The invention provides a roll-over suppressing control apparatus for a vehicle which can suppress roll-over of the vehicle sufficiently also upon steering back turning wherein the turning direction of the vehicle changes over halfway. The roll-over suppressing control apparatus includes a roll-over suppressing control section for controlling, if a roll rate sensor detects that, upon turning of the vehicle, the vehicle is in an excessive rolling state, a braking mechanism so as to apply or increase braking force to a turning outer wheel to perform roll-over suppressing control. If a decision section decides during the roll-over suppressing control that all of the left and right wheels of the vehicle remain in contact with the road, then the roll-over suppressing control section carries out all wheel braking control of controlling the braking mechanism so as to apply the braking force to all of the left and right wheels of the vehicle.

Abstract: The invention provides a technique for learning a stability factor of a vehicle by which the stability factor of the vehicle can be calculated in response to a state of the vehicle. To this end, a state of the vehicle during traveling is detected, and it is decided based on the detection information whether or not the current traveling state of the vehicle is a stable turning state. If it is decided that the current traveling state of the vehicle is a stable turning state, then the stability factor of the vehicle is calculated in accordance with a predetermined arithmetic operation expression based on a vehicle speed, a steering angle and a yaw rate detected during traveling, and the calculated value is determined as a learned value of the stability factor of the vehicle thereby to determine the stability factor in the current state of the vehicle.

Abstract: The invention provides a roll-over suppressing control apparatus for a vehicle which can make a decision of a start of roll suppressing control appropriately in response to the degree of the possibility of turning over on its side of the vehicle. The roll-over suppressing control apparatus includes a braking mechanism for braking wheels of the vehicle, a roll rate sensor for detecting a roll rate of the vehicle, and a roll-over suppressing control section for controlling the braking mechanism so that, if the roll rate detected upon turning of the vehicle becomes equal to or higher than a control starting threshold value, then it is decided that the vehicle is in an excessively rolling state and braking force is applied to the wheels. The control starting threshold value is set to different values depending upon different types of turning of the vehicle (depending upon whether the turning is sudden steering back turning, moderate steering back turning or one-directional turning).

Abstract: An apparatus for controlling the turning behavior of a vehicle controls the braking forces of diagonally located wheels of the vehicle independently of depression of a brake pedal to produce a target braking force difference between the controlled wheels when the vehicle is turning, thereby applying a desired yaw moment to the vehicle. The braking forces of the controlled wheels are determined taking account of actual braking forces of respective non-controlled wheels which are located on the other, right or left side of the corresponding controlled wheels.

Abstract: An automatic deceleration control apparatus for a vehicle operates so as to secure appropriate tire grip performance, depending on the conditions of a road surface on which the vehicle runs turning, and restrain excessive rolling of the vehicle body, thereby stabilizing the turning behavior of the vehicle at all times. While the vehicle is turning on a high-friction road surface without undergoing yaw moment control, a safe vehicle speed is computed within the rollover limit of the vehicle. While the vehicle is turning on a low-friction road surface under yaw moment control, on the other hand, a safe vehicle speed that ensures satisfactory tire grip performance is computed in accordance with an estimated road friction coefficient. When the vehicle is about to exceed its safe speed as it turns, it is automatically decelerated to the safe speed or below. Thus, the vehicle can be prevented from spinning, drifting out, or rolling over.