An embodiment provides an electric brake system including a hydraulic pressure supplier configured to produce hydraulic pressure of oil using rotation force of a motor; a hydraulic circuit configured to convey hydraulic pressure discharged from the hydraulic pressure supplier to a wheel cylinder; a motor position sensor configured to measure a position of the motor; a motor current sensor configured to measure a current of the motor; and a controller configured to determine whether there is a leak in the hydraulic circuit based on the measured position and current of the motor, and determine a circuit that has a leak based on the measured position and current of the motor when it is determined to have a leak in the hydraulic circuit.

An electronic system for controlling traction and braking of a vehicle is described. The system includes a device for actuating braking operatively connected to at least one first wheel of the vehicle, and at least one first traction and braking control unit. The device comprises: at least one first electric actuator and at least one electric motor. The at least one first traction and braking control unit being configured to control the at least one electric motor in regeneration mode to exert a regenerative braking torque on at least one first wheel. The at least one first traction and braking control unit also being configured to control the at least one electric motor in traction mode to exert a traction torque on the at least one first wheel.

A guide ring of a pump portion is fixed in a cylinder containing hole in such a manner that a distal end of a first end portion thereof is positioned in a cam containing hole on an upper side with respect to an opening edge of the cylinder containing hole.

A method of brake control of a vehicle combination (2) composed of a tractor vehicle (4) with an electronically controlled braking system (5) and a trailer vehicle (6, 8) with a pneumatically controlled pneumatic braking system (7, 9), involves introducing the brake control pressure (p.sub.BC) of the trailer vehicle (6, 8) into a tractor brake control line (19) extending to a tractor vehicle-side “brake” coupling head (26) via an electronically controlled trailer control valve (13) of the tractor vehicle (4). At the beginning of a braking operation, a pressure pulse (34) exceeding a target brake control pressure (p.sub.BC_soll) is introduced into the tractor brake control line (19). The volume of a trailer brake control line (28, 29, 32) coupled to the “brake” coupling head (26) is ascertained, and the absolute value (Δp.sub.PI) and/or the duration (Δt.sub.PI) of the pressure pulse (34) introduced are/is established depending on the ascertained volume.

A brake system for an articulated vehicle is disclosed. The brake system includes a brake assembly coupled to a traction device, the brake assembly being configured to apply a brake-assembly pressure based on one of a hydro-mechanical pressure signal and an electro-mechanical pressure signal. A blocking valve is configured to block the hydro-mechanical pressure signal when closed. A brake controller, is configured to transmit an isolation signal configured to close the blocking valve and transmit an ABS control signal that is based on a commanded ABS brake pressure.

Systems and methods are described for controlling a vehicle braking system. An electronic controller determines a target deceleration based at least in part on a detected displacement position of a brake pedal and determines an adjusted braking pressure to be applied to at least one wheel of the vehicle such that, regardless of the displacement position of the brake pedal and the target deceleration, the adjusted braking pressure is maintained outside of a defined range of braking pressures that corresponds to a NVH condition for the at least one wheel. The adjusted braking pressure is then applied to the at least one wheel of the vehicle.

Method for operating a brake system of a motor vehicle having a hydraulic service brake device with hydraulically actuated wheel brakes on at least one front axle of the motor vehicle, and a parking brake device with wheel brakes, which can be actuated in each case by an electromechanical actuator, on a rear axle of the motor vehicle, wherein a motor vehicle actual longitudinal deceleration is measured, wherein during a braking operation by the hydraulic service brake device a braking operation is carried out by the parking brake device while the motor vehicle is traveling, wherein a motor vehicle setpoint longitudinal deceleration which is to be achieved is determined, and the electromechanical actuators of the parking brake device are actuated in such a way that the motor vehicle actual longitudinal deceleration is adjusted to the motor vehicle setpoint longitudinal deceleration.

This electric brake device includes: a brake rotor, a friction member, a friction member operator, an electric motor, and a controller which controls, by controlling the electric motor, a braking force generated as a result of contact between the friction member and the brake rotor. The electric brake device includes a vehicle speed estimator which estimates the speed of the vehicle having the electric brake device mounted thereon. The controller includes a power limiter which limits the power that drives the electric motor. When an estimated vehicle speed, which is the speed of the vehicle estimated by the vehicle speed estimator, is in a determined low-speed range, the power limiter limits the power in accordance with a condition that has been determined such that the maximum power consumption of the electric brake device decreases in accordance with decrease in the estimated vehicle speed.

An electronic brake system includes a caliper provided on each wheel configured to perform braking, a detector configured to measure a driver's step force or detect a braking pressure generated by the caliper and a controller controls a rotational speed of the motor based on a first rotation speed of the motor calculated based on a change in the magnitude of the braking pressure generated by the caliper, and a second rotation speed of the motor based on a change in the magnitude of the step force when the change in the magnitude of the step force satisfies a predetermined criterion.

A brake cylinder arrangement has a brake cylinder, a pressure sensor, and a pressure reducer, wherein the pressure reducer transfers pressures from the brake cylinder to the pressure sensor differently, depending on the input pressure range. The invention furthermore relates to a braking system having a brake cylinder arrangement of this kind.