A braking system for vehicles may have a pilot pump fluidically connected to a hydraulic actuator device. The hydraulic actuator device has a by-pass, configured to connect or disconnect fluidically a first actuation chamber and a delivery duct, where a movable septum is connected to a motor device. The movable septum places the first actuation chamber in communication with the by-pass and with a second actuation chamber, to a braking correction condition. The motor device is activated to translate the movable septum so that the first actuation chamber is fluidically separated from the by-pass and from the second actuation chamber. The second actuation chamber, fluidically connected to the delivery duct, controls the actuation of the braking device, excluding the action imposed by the user through the fluid under pressure in the first actuation chamber.

An electro-mechanical brake device comprising: a sensor unit comprising one or more sensors; an electronic parking brake (EPB) configured to fix a wheel of the vehicle when the vehicle is parked; a hydraulic braking unit configured to supply a braking force to a wheel brake using hydraulic pressure generated at a master cylinder; a driving control unit configured to determine whether braking is required for the vehicle based on at least one of a driver's braking intention, a change in the hydraulic pressure at the master cylinder, a vehicle status, an engine status and a transmission state, and further configured to determine whether an actuator has failed; and an actuator decision unit configured to, when the driving control unit determines that braking is required for the vehicle, brake the vehicle using any one of the hydraulic braking unit and the EPB depending on whether the actuator has failed.

A cable-coupled by-wire control of a vehicle control function traditionally activated by driver manipulation of a pedal is achieved though the agency of a Bowden cable having a first end fastened to the driver pedal, and a second end coupled to a by-wire actuator. The by-wire actuator has a pulley on which the second end of the cable is fastened, an electric motor coupled to the pulley to permit by-wire activation of the vehicle control function by rotation of the pulley in a direction to pull on the pedal with the cable. A relief chamber of the actuator radially outboard of the pulley accommodates slack in the cable within the actuator caused by driver manipulation of the pedal during by-wire activation of the control function.

A control device for a vehicle includes: an accepting unit configured to accept a first braking request from a plurality of applications that realize a driving assistance function; an acquiring unit configured to acquire a second braking request by a driver operation; an arbitrating unit configured to perform arbitration of the first braking request and the second braking request; and an output unit configured to output a request to an actuator based on a result of the arbitration by the arbitrating unit, wherein the arbitrating unit is configured to, when the acquiring unit acquires the second braking request while the output unit is outputting the request to the actuator, perform the arbitration in which the request that the output unit outputs to the actuator is increased or maintained, based on the second braking request.

A brake system for controlling the brake performance of a vehicle includes a brake, a control unit connected to one or more external condition sensors, and one or more brake performance sensors. The external condition sensors obtain parameters regarding conditions surrounding the vehicle, which are monitored by a driver assistance unit to estimate a probability value that the brakes should be applied to avoid a collision. The brake performance sensors obtain parameters regarding conditions of the brake. The control unit receives the obtained parameters from the external condition sensors and the estimated probability value and determines a surrounding threat level of the vehicle. The control unit receives the obtained parameters from the brake performance sensors and determines a brake performance level, and heats the at least one brake if the brake performance level is below a first level and the surrounding threat level is above a second level.

The present disclosure in at least one embodiment provides an electromechanical braking apparatus including a rod configured to translate in response to a depression of a brake pedal, a master cylinder configured to receive brake oil and to be responsive to insertion of the rod for discharging the brake oil, a motor, and a gear mechanism having at least some part connected to the master cylinder and at least some other part connected to the motor, wherein the gear mechanism including an upper housing configured to receive at least some portion of a plurality of gears, and a lower housing coupled to the upper housing and configured to receive at least some other portion of the plurality of gears.

An electromechanical brake pressure generator including a spindle drive unit for converting a rotational motion of an electric motor-driven drive shaft into a translatory motion of a piston that is coupled to the spindle drive unit, the spindle drive unit being operatively connected to the drive shaft via a multi-stage transmission. The multi-stage transmission is a planetary gear set having a first and a second stage. With the aid of the transmission, a spindle or a spindle nut of the spindle drive unit is drivable, which is rotatably mounted in a housing of the brake pressure generator via a bearing assembly receiving axial and radial forces. A braking system for a vehicle including an electromechanical brake pressure generator is also described.

A system and method are provided for estimating and applying vehicle tire traction. Vehicle data (e.g., movement and location-based data) and tire sensor data are collected at a vehicle and transmitted to a remote computing system (e.g., cloud server). A wear status is determined, and traction characteristics determined for at least one tire, based at least on the vehicle data and the determined tire wear status. The predicted tire traction characteristics are transmitted from the remote computing system to an active safety unit associated with the vehicle, or a fleet management system, wherein the recipient is configured to modify vehicle operation settings based on at least the predicted tire traction characteristics. A maximum speed for the vehicle may be defined by the recipient, or a minimum following distance where, e.g., the vehicle is one of multiple vehicles in a defined platoon.

A vehicle braking system includes a wheel cylinder, a master cylinder including a master cylinder piston operable to translate between an unactuated position and an actuated position in a first mode of operation, a brake pedal operable to transition between an extended position corresponding to the unactuated position of the master cylinder and a retracted position corresponding to the actuated position of the master cylinder, and a booster located between the master cylinder and the brake pedal. The master cylinder is operable to selectively transfer a braking force from the brake pedal to the wheel cylinder in the first mode of operation. The booster is operable to hold the brake pedal in the retracted position in a second mode of operation without user input and without associated braking.

A control apparatus for an electromechanical-brake-booster of a vehicle, having: an electronic-device to control an electric-motor of the electromechanical-brake-booster so that an output piston, connected indirectly to the electric-motor, of the electromechanical-brake-booster is displaceable out of its initial-position by the controlled electric-motor, such that only after a displacement of the output-piston out of its initial-position by at least a predefined limit displacement travel does a frictional engagement exist between the output-piston and an input-piston that is indirectly connected to the brake-pedal and is displaced by the actuation of the brake-pedal, and such that a speed of the output-piston displaced out of its initial-position by less than the limit displacement travel is at first increased from a reference-speed to a maximum-speed and is then reduced from the maximum-speed to the reference-speed. The invention furthermore relates to a method for operating an electromechanical-brake-booster of a vehicle.