A trailer brake module includes a brake output driver configured to be connected to a power supply, a flyback diode, and a MOSFET arranged between the power supply and the flyback diode. The MOSFET is in series with the flyback diode.

A control circuit, is disclosed, which is developed and intended for use in a motor vehicle. The control circuit comprises a first circuit portion, which is developed and intended to detect an error state of a control module and/or supply source, such as a voltage supply, of a drive arrangement, for example a drive arrangement of a brake system of the motor vehicle, and/or an electric drive of the drive arrangement, and is developed and intended to cause a short-circuit of the electric drive of the drive arrangement if an error state has been detected. A control method is also disclosed, for operating a brake system of a motor vehicle, as well as a computer program and a control unit or system having multiple control units.

A method for operating a brake system of a motor vehicle is disclosed. The brake system comprises a drive arrangement for applying and/or boosting a brake force, wherein the drive arrangement has an electric drive. The method comprises the step: short-circuiting the electric drive as soon as the electric drive has been disconnected from a supply source and/or a voltage drop and/or current drop has taken place. A computer program, control circuit and a control unit or system having multiple control units is also disclosed.

The disclosure relates to a braking system for a vehicle having at least four brakable wheels, comprising at least four brake actuator units, each of which can be associated with one of the wheels of the vehicle, wherein each brake actuator unit is associated with an electronic control unit which is designed to activate the brake actuator unit in order to apply a braking force to an associated wheel. At least two of the control units are designed as a master unit and a brake signal from a brake actuation unit is sent directly to each of the master units, and wherein each master unit is directly connected in terms of signaling to at least another of the control units, designed as a slave unit, in order to forward the brake signal to the slave unit.

The brake driving control circuit, which controls an electromagnetic brake that releases the brake by applying a current, is provided with: a first rectifying element provided between a first power supply of a first circuit voltage and one terminal of the electromagnetic brake; a cut-off switch inserted into a line through which the first power supply supplies power; a first switching element provided between the other terminal of the electromagnetic brake and a ground point; and a second switching element and a second rectifying element provided in series between a second power supply of a second circuit voltage, which is different from the first circuit voltage, and the one terminal of the electromagnetic brake.

The present disclosure relates to a brake device for a vehicle, and a main object of the present disclosure is to provide a brake device for a vehicle which can stably perform an electric parking braking cooperative control process for dynamic parking braking in a state in which the brake device enters a backup mode due to an abnormality or a malfunction generated in a device related to an electric booster in a vehicle equipped the electric booster. In order to achieve the above object, a brake device including a fallback valve which is provided on a hydraulic pressure supply line connected to a wheel brake of a wheel on which an electronic parking brake is installed, and which is configured to selectively shut off brake liquid pressure supplied to the wheel brake, and a method for controlling the same are disclosed.

A brake system has at least two energy sources and at least two electromechanical wheel brakes. A first wheel brake is directly connected exclusively to a first of the energy sources and is not directly connected to a second of the energy sources. A second wheel brake is directly connected to the second energy source and is not directly connected to the first energy source. The wheel brakes are each configured to, in the event of failure of the energy source of the respective other wheel brake, supply energy to the other wheel brake from the remaining energy source.

In a hydraulic brake system, when a main power supply is in an abnormal condition in which it cannot supply electric power to a pump motor, etc., the pump motor is operated with electric power supplied from an auxiliary power supply, irrespective of the presence of a braking request. Thus, when the main power supply is in the abnormal condition, the number of times inrush current flows is reduced. As a result, the voltage of the auxiliary power supply is less likely to be lower than an operation minimum voltage, and the hydraulic brake system is less likely to be unable to be operated.

A vehicle-electrical-apparatus, including: a service-brake-valve-device (SBVD) having an electropneumatic service-brake-device (ESBVD), which is an electronically-brake-pressure-regulated-brake-system (EBPRBS), having an ESBVD, a first-electronic-brake-control-device (EBCD), electropneumatic-modulators (EM) and pneumatic-wheel-brake actuators (PWBA); a sensor-device; the first-EBCD controls the EMs generating pneumatic brake-control-pressures (PBCP) for the PWBAs, and the ESBVD has a service-brake-actuation-member (SBAM) and an electrical-channel containing an electrical-brake-value-transmitter, actuate-able by the SBAM, and a second-EBCD couples brake-request signals into the first-EBCD depending on the AS, and, within a pneumatic-service-brake-circuit, a pneumatic-channel in which a control-piston of the SBVD is loaded with a first-actuation-force (AF) by actuating the service-brake-actuation-member based on a driver brake-request, and the control-piston controls a double-seat valve of the SBVD to generate PBCPs for the PWBAs; generating a second AF that acts on the control-piston; brake slip/driving-dynamics-regulation are in the second-EBCD, the second-EBCD receives sensor-signals, and for braking requested, generating the second AF to perform a brake-slip and/or driving-dynamics-regulation.

The invention relates to an electric brake system (1) for a vehicle. The electric brake system (1) comprises electric brake devices (2). The electric brake devices (2) are powered and controlled by redundant capacitor-based power sources (9A, 9B) and redundant control circuits (16A, 16B). The capacitor-based power source (9A, 9B) can be integrated into axle modules (39A, 39B) located close to a vehicle axle (61A, 61B). The capacitor-based power sources (9A, 9B) are recharged by a hub generator, a regeneration power source (32).