In a method, a brake torque signal provided by an electronic control unit of an anti-lock braking system is validated. The brake torque signal is enabled for use as a brake event input signal upon being successfully validated for diagnostic and control routines of the vehicle that use the brake torque signal as a brake event input signal. If the brake torque signal fails validation, it is disabled for such use. The brake torque signal is validated by first rationalizing a brake pedal position signal and a master cylinder pressure signal. Once the brake pedal position signal is successfully rationalized with the master cylinder pressure signal, the brake pedal position signal is rationalized with the brake torque signal. The brake torque signal is successfully validated when both rationalizations are successful. The validation fails if either rationalization fails.

Disclosed is an electronic brake system that includes a master cylinder unit including a master cylinder to which a master cylinder reservoir coupled to generate a hydraulic pressure, a hydraulic block provided with a hydraulic pressure supply device to generate the hydraulic pressure by an electrical signal outputted in response to a displacement of a brake pedal and a hydraulic control unit to transmit the hydraulic pressure discharged from the hydraulic pressure supply device to wheel cylinders provided in each wheel, and disposed to be separated from the master cylinder unit, a hydraulic block reservoir coupled to the hydraulic block, and a connection hose to connect the master cylinder reservoir and the hydraulic block reservoir.

An electro-hydraulic brake system includes a master cylinder (MC) configured to supply fluid into a first MC fluid passageway in response to pressing force on a brake pedal; a pressure supply unit (PSU) assembly having a PSU motor coupled to a ball screw actuator, a PSU housing defining a piston bore having a terminal end opposite the PSU motor, and a PSU piston dividing the piston bore into a first chamber and a second chamber and movable by the ball screw actuator, with each of the first chamber and the second chamber containing a hydraulic fluid; and a backup pump assembly including a pump for supplying the brake fluid to at least one of the wheel brakes. The ball screw actuator includes an actuator nut assembly having a plurality of ball bearings each disposed within the piston bore and submerged in the hydraulic fluid.

The present disclosure relates to an organ-type electronic pedal apparatus including a high-load spring module 500 and a hysteresis lever 400 and capable of tuning a pedal effort, a stroke, and a hysteretic force, which are required to vary depending on the types of vehicles, by changing components of the hysteresis lever 400, as necessary.

Determining a brake torque reduction parameter for brake torque reduction in a motor vehicle having a brake holding assist function. The determination including detecting a motion parameter of the motor vehicle and analyzing the detected motion parameter to determine a correction value for a brake torque reduction parameter. Adjusting the brake torque reduction parameter using the correction value determines an optimized brake torque reduction parameter. The optimized brake torque reduction parameter is used as a brake torque reduction parameter of the brake torque reduction.

A brake system performs a repeatable brake operation of a vehicle. The brake system includes a main unit having an electrical power circuit, a micro programmable logic controller, an air compressor, a compressed air tank, a pressure regulator, a solenoid valve, and a pneumatic control circuit, a driver control box for controlling the system, and a pneumatic cylinder for performing the repeatable brake operation, the pneumatic cylinder being attached to a brake pedal.

A brake controller of a machine can be configured to determine brake power associated with braking operations, such as operations to slow the machine or maintain a speed of the machine. The brake controller can allocate the brake power among systems such as a battery system, a resistive grid, auxiliary systems, a mechanical brake system, and/or other systems, based on a defined priority order of the systems. For example, the brake controller can prioritize using a regenerative brake system to charge a battery system during a braking operation up to a currently-available capacity of the battery system, and allocating any remaining brake power to a lower-priority system. The mechanical brake system can be the lowest-priority system, such that use of the mechanical brake system can be avoided unless an amount of brake power exceeds capacities of higher-priority systems to consume the brake power.

A park brake system for adjusting a tension in a brake cable that is coupled to a park brake. The park brake system can include a driver that is communicatively coupled to a microcontroller, and an actuator that is rotatably displaceable by operation of the driver. An equalizer assembly can be linearly displaced along the rotating actuator to adjust a tension in the brake cable. The microcontroller can monitor a current being drawn by the driver as the driver is operated, and generate instructions to cease operation of the driver upon the current reaching a predetermined current threshold that corresponds a maximum force that is to be applied by the park brake. The microcontroller can also, when the park brake is being released from a set position, count pulses outputted by an encoder in connection with determining whether the park brake has reached a running clearance position.

A vehicle brake system for giving an excellent brake feeling to a driver includes: a stroke detector configured to detect a stroke of a brake pedal; a brake fluid pressure generator including a motor actuator and configured to generate a brake fluid pressure by operation of the motor actuator, and a controller configured to control the operation of the motor actuator on the basis of a detected value by the stroke detector. The controller has a base required-deceleration map for obtaining a base required-deceleration associated with a detected value by the stroke detector; a responsive-feeling required-deceleration map for obtaining a responsive-feeling required-deceleration associated with the detected value by the stroke detector; and a phase-lag processor applying phase-lag processing on the responsive-feeling required-deceleration, and control the operation of the motor actuator on the basis of the required-deceleration and the responsive-feeling required-deceleration applied with the phase-lag processing.

A vehicle pedal stroke detection apparatus acquires a first value based on a physical amount regarding a magnetic flux of a magnet that is output from a stroke sensor. The first value is a physical amount regarding a magnitude of a magnetic flux density of the magnet with respect to a displacement of a push rod. Then, the vehicle pedal stroke detection apparatus compares the first value and a second value. The second value is a preset physical amount regarding the magnitude of the magnetic flux density of the magnet with respect to the displacement of the push rod.