A braking system with function of anti-somersault, comprising: a hydraulic unit, a piston, a drive unit, a suspension travel sensor, and an ECU. During braking, according to a suspension travel signal generated by the suspension travel sensor, the ECU is able to determine whether a vehicle with short wheel base and high centre of gravity tends to be subject to forward somersault or not. Once confirmed, the ECU immediately sends a control signal to the drive unit, so as to drive the piston move towards a pressure releasing direction, such that fluid pressure on the downstream side of the hydraulic unit is blocked from changing. Moreover, further increase of the piston's displacement increases fluid volume in an oil chamber of the hydraulic unit so as to largely reduce the downstream fluid pressure. Consequently, braking force applied to the vehicle by the braking caliper decreases, and the forward somersault is prevented.

A controller and a control method capable of appropriately stabilizing behavior of a rear wheel of a straddle-type vehicle. In the controller and the control method, a slip amount of a wheel of a straddle-type vehicle is controlled to be equal to or smaller than an allowable slip amount. In the case where it is determined that behavior of a rear wheel of the straddle-type vehicle is in an unstable state on the basis of a slip angle of the straddle-type vehicle, stabilization control is executed to reduce the allowable slip amount of the rear wheel to be smaller than the allowable slip amount of the rear wheel at the time when it is determined that the behavior of the rear wheel is in the stable state.

A drive assist apparatus includes a detector and a traveling controller. The detector detects an operation target of automatic emergency braking of a vehicle. The traveling controller includes a calculator and a determiner, and controls the automatic emergency braking on the basis of a result of the detection performed by the detector. The calculator calculates each of a target deceleration rate and a variation rate. The target deceleration rate is a target value of a deceleration rate of the automatic emergency braking. The variation rate is a rate of variation in the deceleration rate required for the deceleration rate of the automatic emergency braking to reach the target deceleration rate. The determiner determines a contact risk of the vehicle with the operation target on the basis of the target deceleration rate. The calculator increases the variation rate when the contact risk is determined by the determiner as being relatively high.

The invention has a purpose of providing a wheelie controller and a control method thereof capable of preventing a reduction of acceleration that is more than necessary and reducing a shock during a contact of a front wheel with the ground when a wheelie state is terminated.

The wheelie controller for controlling a wheelie of a vehicle body computes a target trajectory, which is a target of a parameter and is used to control the wheelie state of the vehicle body, in accordance with the parameter that is related to pitch of the vehicle body and controls an increase/reduction of the pitch of the vehicle body so as to bring the parameter close to the target trajectory.

A method is provided for controlling a brake system (12) of a motor vehicle (2), having wheel brakes controllable for carrying out an anti-lock function (ABS) and for carrying out a roll stability control function (RSC). During cornering or in the event of a sudden evasive movement, the motor vehicle (2) is braked by actuation of the wheel brakes (26a, 26b, 28a, 28b) on account of a determined risk of tilting. With the start (t1) of an ABS control operation on the braking force (p.sub.B_KA) of a wheel brake (26b; 28b) on the inside of the bend on at least one motor vehicle axle (4; 8), the braking force (p.sub.B_KA) of at least one wheel brake (26a; 28a) on the outside of the bend is increased, and is lowered again with the end of the ABS control operation (t3).

Disclosed is a method for automatically controlling brakes in a trailer vehicle having antilock control, wherein wheel rotational speeds are continuously monitored and evaluated at wheels having antilock control. According to the method, lateral acceleration and longitudinal acceleration of the trailer vehicle are determined. If a predefined, critical lateral acceleration is exceeded, an automatic braking process occurs. A control unit and trailer vehicle are also disclosed in connection with the inventive method.

A flight control law enhances braking efficiency through the operation of aircraft elevators (or another pitch control system) using measured longitudinal acceleration and/or pedal position as references to the control law. Through this solution, it is possible to increase the vertical load in the main landing gear and consequently enhance braking efficiency.

A method for determining the lean angle of a two-wheeler in which the axle load on at least one wheel is ascertained and the lean angle is calculated as a function of the axle load.

A brake fluid pressure control device for vehicles with bar handle, includes: an acceleration acquiring unit which is configured to acquire acceleration that occurs in the vehicle; and a control unit which is configured to judge a probability of occurrence of a rear-wheel lift based on the acceleration acquired by the acceleration acquiring unit, and which is configured to perform a pressure reduction control on a front wheel brake when judging that the occurrence of the rear-wheel lift is probable, the control unit which is configured to adjust a degree of pressure reduction of the pressure reduction control based on a differentiation value of the acceleration acquired by the acceleration acquiring unit.

The embodiments of the present application disclose a stability control system and a stability control method for a four-wheel drive electric vehicle and the four-wheel drive electric vehicle. In the stability control system, when the lateral acceleration is equal to or greater than an acceleration threshold, at least one of a first braking force signal, a second braking force signal, a first logic signal and a second logic signal is obtained. When the first logic signal is obtained, the body of the electric vehicle is controlled to keep stable. When the first braking force signal and the second logic signal are obtained, a motor is controlled to apply braking force to an outside front wheel. When the second braking force signal and the second logic signal are obtained, motors are controlled to apply braking force to the outside front wheel and an inside rear wheel.