The invention relates to a brake system including at least one brake with an electric brake actuator, at least one electronic control unit for controlling the at least one electric brake, and two different power supply units connected to the at least one electronic control unit and configured for supplying energy to the at least one electric brake actuator. The at least one electronic control unit comprises a first brake actuation system for activating the electric brake actuator and a redundant brake actuation system for activating the electric brake actuator in case of a failure of the first brake actuation system. The invention also relates to a method for using the brake system.

A electric brake system includes a main device that provides a first hydraulic pressure to a plurality of wheel cylinders respectively installed on a plurality of wheels, based on a position of a brake pedal: and art auxiliary device that provides a second hydraulic pressure to first and second wheel cylinders respectively installed on first and second wheels among the plurality of wheels based on the position of the brake pedal in a state in which the main device does not generate the first hydraulic pressure. The auxiliary device receives power from a power network different from that of the main device, and the auxiliary device controls at least one of first and second parking brakes respectively installed on third and fourth wheels among the plurality of wheels. In such an electric brake system, when the main device fails or is out of control, the auxiliary device may auxiliary generate the hydraulic pressure required for braking and may generate braking force using the parking brake.

An electric push rod with a dual brake mechanism includes an electric motor, a transmission device, a first brake mechanism and a second brake mechanism. The electric motor has a driving wheel. The transmission device is installed on a side of the electric motor and includes a deceleration mechanism, a lead screw, a driven wheel, and a telescopic pipe. The deceleration mechanism is disposed between the driving wheel and the driven wheel. The lead screw is sheathed with the driven wheel and the driven wheel is driven by the electric motor to rotate together with the lead screw. The telescopic pipe and the lead screw are screwed and driven. The lead screw is sheathed with the first brake mechanism formed on a side edge of the driven wheel. The lead screw is sheathed with the second brake mechanism disposed between the driven wheel and the telescopic pipe.

A brake system for a motor vehicle and a method for operating the brake system. The brake system comprises a braking assembly; a drive mechanism operatively connected to the braking assembly; and an electric motor assembly operatively connected to the drive mechanism, wherein the braking assembly, the drive mechanism and the electric motor assembly are configured to be located outside a wheel rim of a vehicle wheel of the motor vehicle and inside a frame body of the motor vehicle, and the drive mechanism is configured to be driven by the electric motor assembly to selectively enable the braking assembly to generate a braking force, by which an associated rotatable shaft of the motor vehicle can be stopped to rotate, while the motor vehicle is in motion.

A brake system for a motor vehicle and a method for operating the brake system. The brake system comprises a braking assembly; a drive mechanism operatively connected to the braking assembly; and an electric motor assembly operatively connected to the drive mechanism, wherein the braking assembly, the drive mechanism and the electric motor assembly are configured to be located outside a wheel rim of a vehicle wheel of the motor vehicle and inside a frame body of the motor vehicle, and the drive mechanism is configured to be driven by the electric motor assembly to selectively enable the braking assembly to generate a braking force, by which an associated rotatable shaft of the motor vehicle can be stopped to rotate, while the motor vehicle is in motion.

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 transportation vehicle with a brake system designed for rapid deceleration of a moving vehicle, which enhances the effectiveness of vehicular braking in emergency situations, and increases the safety of automobile traffic on roads, which results in greater road-traffic safety due to enhanced reliability and higher effectiveness of braking under emergency situations. A vehicular hydraulic brake system having a master brake cylinder with a hydraulic reservoir supplying a brake fluid, a control foot pedal and a vacuum booster connected to an operating brake cylinder of each wheel. The brake system has emergency braking assemblies mounted before the operating brake cylinders of at least rear wheels. The emergency braking assembly includes an electrical mechanism operating in a reciprocating manner and has a rod attached to a piston of a hydraulic cylinder. An inlet hole of the hydraulic cylinder is connected to a pipeline in communication with the master braking cylinder. An outlet hole of the hydraulic cylinder is in communication with the operating brake cylinder. A top portion of the hydraulic cylinder has a compensation port in close proximity to the electrical mechanism, said compensation port being connected to the pipeline in communication with the master braking cylinder. A bottom portion of the hydraulic cylinder of the emergency braking assembly is disposed not lower than a top level of the operating brake cylinder.

A brake system and method for a motor vehicle with at least four hydraulically actuatable wheel brakes, includes a first electrically controllable pressure source separably connects a first brake circuit supply line via a first isolating valve, a second electrically controllable pressure source separably connects a second brake circuit supply line via a second isolating valve, at least four electrically actuatable inlet valves, each assigned to one of the wheel brakes, the first and second brake circuit supply lines are each connected to two inlet valves, an electrically actuatable outlet valve per brake, an electrically actuatable circuit separation device, by which the first and the second brake circuit supply line are hydraulically separated and connected. First and second electronic devices actuate the first and second pressure sources, respectively. The first isolating valve actuates the second electronic device and the second isolating valve actuates the first electronic device.

An actuator of an electric parking brake is disclosed. According to one embodiment of the present invention, an actuator of an electric parking brake is provided, the actuator including a driving part which generates a rotation force, a first gear part which transmits the rotation force of the driving part, a second gear part including a rotation shaft which receives the rotation force from the first gear part to rotate, and a rotation shaft control part which is disposed at one side of the second gear part on the rotation shaft, provides a degree of rotational freedom to the rotation shaft during braking, and prevents reverse rotation of the second gear part due to a reverse rotation torque by fixing the rotation shaft when the braking is completed.

An object of the invention is to provide a motor control device capable of realizing a redundancy while suppressing an increase in the number of parts and the number of connection signal lines.

The invention includes angle sensors 102 and 103 for detecting a rotation angle of a motor, MPU 107 for controlling the motor based on a stroke sensor 117 and receiving the detected value of the angle sensor 102, MPU 108 for controlling the motor based on the stroke sensor 117 and receiving the detected value of the angle sensor 103, and communication units 115 and 116 for transmitting and receiving signals between the MPUs 107 and 108. The MPU 107 includes an angle sensor failure detecting unit 114 for detecting a failure of the angle sensors 102 and 103, according to the detected value of the angle sensor 102, the detected value of the angle sensor 103 received through the communication unit 115, and a control angle of the motor created in response to the stroke sensor 117.