An apparatus and a method can accurately estimate and determine a friction coefficient of a brake friction material in real time taking into consideration current driving conditions of a vehicle. The apparatus includes a model generation device configured to generate a friction coefficient meta model to determine the friction coefficient based on information of an operation state of a brake using raw data acquired through a preceding test evaluation process.

An apparatus for braking a vehicle includes wheel brakes configured to generate a braking force on each of wheels, a first actuator for supplying a braking force to the wheel brakes by using a first motor and a first master cylinder, a second actuator for supplying a braking force to the wheel brakes by using a second motor and a second master cylinder, a first electronic control unit (ECU) for controlling the first actuator and determining normal or faulty operation of the first and second actuators, and a second electronic control unit (ECU) for controlling the second actuator and determining the normal or faulty operation of the first and second actuators. When the first ECU and the second ECU are determined to be normal, the first ECU controls to brake some of the wheel brakes, and the second ECU controls to brake a remainder of the wheel brakes.

A method for decelerating a vehicle combination including a towing vehicle having a towing vehicle brake system and at least one trailer vehicle having a trailer brake system with an anti-lock brake system includes applying, by the towing vehicle brake system, a brake pressure to pneumatically operable wheel brakes of the towing vehicle according to a desired deceleration specified by a driver, and providing, by the towing vehicle brake system, a trailer brake pressure for the trailer brake system of the at least one trailer vehicle. An electronic brake control unit of the towing vehicle brake system: detects a current actual vehicle deceleration value continuously compares the current actual vehicle deceleration actual value with a maximum deceleration, and, when the current actual vehicle deceleration value reaches or exceeds the maximum deceleration, limits the brake pressure and provides an information signal.

A braking system for motorcycles may have a first manual actuator device selectively connectable to at least a first braking device and/or at least a second braking device. The first manual actuator device may be provided with a hydraulic supply circuit that can be selectively connected to a hydraulic input circuit of at least one of the braking devices. The system may also have at least one electro-hydraulic automatic actuator device and at least one electromechanical automatic actuator device. The system may also have a single control unit operatively connected to the control valve, to the at least one electro-hydraulic automatic actuator device, to the at least one electromechanical automatic actuator device and to the first manual actuator device to operate the electro-hydraulic and electromechanical automatic actuator devices and the control valve according to the configuration of the first manual actuator device and/or according to the dynamics of the motorcycle.

A trailer braking system having a surge component used in combination with an electric over hydraulic brake system. The surge component includes a sliding member with a magnetic sensor for detecting trailer deceleration, the sliding member providing an initial pressurization of the hydraulic system. A trailer mounted electrical circuit detects when the tow vehicle brakes are applied and includes a microcontroller for detecting the speed of deceleration provided by the magnetic sensor. A trailer mounted electric motor receives a signal from the circuit board to vary pressure to the brakes in accordance with the speed of deceleration.

A method for automatically emergency stopping a motor vehicle from a starting speed to a standstill by a braking device of the motor vehicle is provided. The braking device is actuated to carry out a delay profile with at least two delay phases. During a delay increase phase the delay until a threshold delay is increased and during a delay decrease phase, lasting until standstill, the delay is reduced to zero. The temporal courses of the delay are determined during the delay increase and the delay decrease at least sectionally as nth degree polynomials, where n>0, depending on the starting speed, in such a way that a stopping duration, which represents a time duration necessary for emergency stopping, does not fall below a predetermined minimum stopping duration and a distance covered during the stopping duration does not exceed a predetermined maximum stopping distance.

In accordance with some embodiments, the present disclosure provides A brake system for braking a vehicle using one or both of a main braking system and a redundancy braking system, the brake system comprising: a brake demand detecting unit configured to detect a driver's brake demand; an electronic control unit comprising: a pressure controller configured to control a pressure inside a master cylinder in response to a value detected by the brake demand detecting unit, wherein the internal pressure of the master cylinder is controlled by generating an electrical signal for a first demand current; a motor position controller configured to control a position of a motor by generating an electrical signal for a second demand current; and a current controller configured to control the current of the motor in response to an electrical signal received from one of the motor position controller and the pressure controller; a position detecting unit configured to detect a position of a rotor of the motor; and a pressure detecting unit configured to sense the internal pressure of the master cylinder.

Various technologies for reducing or increasing a speed of a vehicle by rotating its handlebar.

A system and method for classifying an actuation of an electric parking brake of a vehicle. In one example, the system includes a sensor configured to sense a vehicle parameter, an output device, a data store including an electric parking brake usage profile, and an electronic controller configured to receive the electric parking brake usage profile, receive the vehicle parameter from the sensor, detect an actuation of the electric parking brake, and in response to detecting an actuation of the electric parking brake: determine a reason for the actuation of the electric parking brake, determine an attribute of the vehicle based on the vehicle parameter, classify the actuation of the electric parking brake based on at least one selected from the group consisting of a numerical value of the attribute and the reason for the actuation of the electric parking brake, update the electric parking brake usage profile based on the classification of the actuation of the electric parking brake, and output the updated parking brake usage profile to the output device.

A method for determining the overall-deceleration values is attainable by actuation of wheel brakes, of a utility vehicle or of a vehicle combination with several axles. For the purpose of implementing a deceleration request in the course of partial brake applications, a braking-force distribution with braking forces distributed unequally to brake units with the wheel brakes of one or more axles is undertaken. In each instance one of the brake units is selected and a larger braking force is imposed via this selected brake unit than via the other brake units. A current deceleration of the utility vehicle or of the vehicle combination is measured or ascertained and is assigned as partial-deceleration value to the respectively selected brake unit and stored and the attainable overall-deceleration values are determined as the sum of the partial-deceleration values of all the brake units.