An apparatus and method for automatic actuation and control of an air braking system on a commercial vehicle, under a warning of collision conditions, has multiple stages of operation, which supplements the normal brake pedal activation and control of the air brake operation under the driver's foot control. Automatic actuation has two stages: (1) impending collision automatic activation and control for 1.4 second closure; and (2) imminent collision automatic activation and control for 0.9 seconds closure. A determination of closure occurring in excess of 1.6 seconds, turns off the warning, and also deactivates the automatic activation and control. A modification to a standard air brake system structure enables the addition of the automatic activation and control stages. When an impending collision signal is received, an activation component operates valves to pressurize the rear brakes to 40 psi. When the air pressure at the rear brakes rises to 20 psi, other valves pressurize the front brakes. This first stage automatic operation stops or slows the vehicle with 40 psi on the rear brakes and 20 psi on the front brakes. When an imminent collision signal is received, the activation component opens valves to pressurize the rear brakes to 120 psi. Once the air pressure at the rear brakes rises to 20 psi, the front brakes are also pressurized. This second stage automatic operation stops the vehicle with 120 psi on the rear brakes and 80 psi on the front brakes, unless restricted to a lower pressure by the brake system manufacturer. The driver can deactivate the automatic braking functions by stepping on the brake pedal or by operating the vehicle turn signals.

To properly improve safety of a straddle-type vehicle.

The controller includes a determination unit and an execution unit. The determination unit (63) determines, based on at least one of a first master cylinder pressure and a second master cylinder pressure, whether a braking operation is performed. The execution unit executes a driving support mode, in which a braking force generated in a straddle-type vehicle is amplified, when the determination unit determines that the braking operation is performed. The execution unit, in the driving support mode, amplifies: the braking force generated in the straddle-type vehicle, based on surrounding environment information about environment around the straddle-type vehicle; the braking force generated in the straddle-type vehicle with the amplification of the second wheel cylinder pressure superior to the amplification of the first wheel cylinder pressure when the rider performs the braking operation with the operation of the first braking operation unit superior to the operation of the second braking operation unit; and the braking force generated in the straddle-type vehicle with the amplification of the first wheel cylinder pressure superior to the amplification of the second wheel cylinder pressure when the rider performs the braking operation with the operation of the second braking operation unit superior to the operation of the first braking operation unit.

A vehicle includes a powertrain configured to transfer energy to a tire and including both an engine and an electric machine. The vehicle also includes a controller configured to charge a traction battery with torque captured by the electric machine in excess of torque required to maintain the departure. The charging is in response to indication of departure from static friction between the tire and a surface during a line lock tire slip event powered by the engine.

A vehicle includes a powertrain configured to transfer energy to a tire and including both an engine and an electric machine. The vehicle also includes a controller configured to charge a traction battery with torque captured by the electric machine in excess of torque required to maintain the departure. The charging is in response to indication of departure from static friction between the tire and a surface during a line lock tire slip event powered by the engine.

Provided are a vehicle body behavior control device which can reduce unstable behavior of a vehicle body and a method of controlling behavior of a vehicle body which can reduce unstable behavior of the vehicle body. A vehicle body behavior control device incorporated into a vehicle body having a plurality of wheels includes: a behavior control mechanism which controls behavior of the vehicle body; and a control part which controls an operation of the behavior control mechanism based on an axle load applied to the wheel calculated using a gradient value of a road surface.

A brake system includes a brake activator which first activates a central rear brake and lastly activates a front brake of a right front brake and a left front brake which is provided on a front wheel which is an inner wheel by operating an input member. When an operation amount of the input member from an initial state to a maximum operated state thereof is divided equally into three portions which are defined as a low braking force area, a middle braking force area, and a high braking force area, the brake activator activates the central rear brake, the right front brake, and the left front brake to operate in the low braking force area.

A brake system includes a brake activator which first activates a central rear brake and lastly activates a front brake of a right front brake and a left front brake which is provided on a front wheel which is an inner wheel by operating an input member. When an operation amount of the input member from an initial state to a maximum operated state thereof is divided equally into three portions which are defined as a low braking force area, a middle braking force area, and a high braking force area, the brake activator activates the central rear brake, the right front brake, and the left front brake to operate in the low braking force area.

A method and computer program for electronically regulating the brake force distribution in a pressure medium-operated brake system of a vehicle having at least one front axle brake circuit, associated with a front axle, and at least one rear axle brake circuit, associated with at least one rear axle, in which when the brake system is operated, a rear axle brake pressure, acting in the at least one rear axle brake circuit, is regulated to prevent locking of the rear wheels before locking of the front wheels, and in which the brake pressure at the rear axle is limited only while a pressure value which acts in the rear axle brake circuit is below a prespecified pressure threshold value, but the brake pressure at the rear axle is not limited if the pressure value acting in the rear axle brake circuit is not less than the prespecified pressure threshold value.

A braking system for a vehicle has a first axle with a first road wheel arranged proximate a first vehicle end, and a second axle with a second road wheel arranged proximate a second vehicle end. The braking system includes a first brake assembly configured to apply a braking force to the first road wheel and a second brake assembly configured to apply a braking force to the second road wheel. The braking system additionally includes a controller for regulating the braking force of each of the first and second brake assemblies. Furthermore, the braking system includes a switch for communicating a request to the controller to apply the braking force via the first brake assembly when the vehicle is in motion, but not via the second brake assembly. The request from the switch is intended to stop rotation and generate a slide of the first road wheel.

A braking system for a vehicle has a first axle with a first road wheel arranged proximate a first vehicle end, and a second axle with a second road wheel arranged proximate a second vehicle end. The braking system includes a first brake assembly configured to apply a braking force to the first road wheel and a second brake assembly configured to apply a braking force to the second road wheel. The braking system additionally includes a controller for regulating the braking force of each of the first and second brake assemblies. Furthermore, the braking system includes a switch for communicating a request to the controller to apply the braking force via the first brake assembly when the vehicle is in motion, but not via the second brake assembly. The request from the switch is intended to stop rotation and generate a slide of the first road wheel.