A simulator valve and an electronic brake system using the same are disclosed. The electronic brake system includes a master cylinder provided with at least one cylinder chamber having a volume changeable according to operation of a pedal, a pedal simulator connected to the cylinder chamber, configured to provide reaction force corresponding to a pedal effort of the pedal, a hydraulic-pressure supply device configured to provide hydraulic pressure to at least one wheel cylinder, an electronic control unit (ECU) configured to operate the hydraulic-pressure supply device, and a simulator valve provided in a flow passage through which the master cylinder is connected to the pedal simulator, and provided with a unidirectional flow passage that allows fluid to flow from the pedal simulator to the cylinder chamber and a bidirectional flow passage that is electronically opened or closed.

A hydraulic brake system for a vehicle includes a master brake cylinder, a hydraulic unit, and multiple wheel brakes. The hydraulic unit Ha at least one brake circuit for modulating the braking pressure in the wheel brakes. At least one wheel brake is paired with a bistable solenoid valve, which is looped into the corresponding fluid channel directly upstream of the paired wheel brake and which enables the braking pressure in the paired wheel brake to be modulated in a de-energized open position and locks the current braking pressure in the paired wheel brake in a de-energized closed position, wherein a volume equalization device which comprises a connectable accumulator opens into the corresponding fluid channel between the bistable solenoid valve and the paired wheel brake.

In a solenoid valve for a hydraulic braking system, a mechanical locking device is formed between a guide assembly and a valve armature or tappet. The mechanical locking device releases the valve armature or the tappet in a currentless closed position such that the restoring spring drives the valve armature and presses the closing element into the valve seat to seal and fastens the valve armature or the tappet in a currentless open position against the force of the restoring spring in an axial locking position such that the closing element lifts from the valve seat. The valve armature includes a main-stage armature having a first surface to which pressure is applied and a preliminary-stage armature having a smaller, second surface to which pressure is applied. The preliminary-stage armature is mounted axially movably in the main-stage armature and interacts with a preliminary-stage seat by means of a preliminary-stage closing element.

A brake hydraulic pressure control unit capable of improving mountability of a brake system on a motorcycle is obtained. In addition, a brake system for a motorcycle including such a brake hydraulic pressure control unit and a motorcycle are obtained. In the brake hydraulic pressure control unit of the brake system for a motorcycle, an inlet valve, an outlet valve, and a pump in one of hydraulic circuits as a boost-type hydraulic circuit and a first valve and a second valve in the hydraulic circuit are separately provided in a primary base body and a secondary base body. The primary base body and the secondary base body are separated from each other.

A solenoid valve includes a magnet assembly, a valve cartridge having a pole core, a valve sleeve connected to the pole core, an armature, and a valve body. The armature is guided in an axially movable manner within the valve sleeve and is coupled to a closing element. The magnet assembly generates a magnetic field via energizing a coil winding. The magnetic field moves the armature counter to a force of a spring. The valve body is positioned within the valve sleeve. A valve seat of the valve body forms a main valve with the closing element that sets a fluid flow between at least one first fluid opening and at least one second fluid opening. A positive connection between the valve sleeve and the valve body is formed to prevent movement of the valve body introduced into the valve sleeve counter to a direction of introduction.

A valve cartridge for a solenoid valve, includes a capsule, a magnet armature which is guided in a movable manner within the capsule, a valve insert, and a valve body which has a main valve seat. The magnet armature, which is moved by a generated magnetic force, acts within the valve insert on a closing device, which has a plunger and a sealing element. The sealing element, in the currentlessly open state, opens up the main valve seat and, in the electrically energized, closed state, projects sealingly into the main valve seat of the valve body. The plunger and the sealing element are formed as separate components, and the sealing element is guided axially and/or radially by a guide device, which includes multiple guide balls arranged between the sealing element and an inner wall of the valve insert.

A method for operating a brake system of a motor vehicle includes actuating at least one of a first actuation device and a second actuation device of the brake system, and, in the event of a fault in a hydraulic brake device of the brake system, producing an electromechanical braking force via an electromechanical brake device of the brake system for decelerating the motor vehicle, irrespective of which of the first actuation device and the second actuation device is actuated.

A valve armature for a solenoid valve has a basic body consisting of a magnetically conductive metal. On one end of the basic body is arranged a depression which receives a tappet having a closing element. A tappet basic body consists of plastic and forms an interference fit with the basic body. A valve cartridge for a solenoid valve has such a valve armature, in which case, the basic body has an annular groove which is connected to the depression. The annular groove receives plastic deformations of the tappet basic body which form a form fit with the annular groove and fix the tappet basic body in the depression.

A solenoid valve includes a magnet assembly, a valve cartridge having a pole core, a valve sleeve connected to the pole core, an armature, a valve body, and at least one spring tongue. The armature is guided in an axially movable manner within the valve sleeve and is coupled to a closing element. The magnet assembly generates a magnetic field via energization of a coil winding. The magnetic field is configured to move the armature counter to a force of a restoring spring. The valve body is positioned within the valve sleeve. A main valve seat of the valve body forms a main valve with the closing element that sets a fluid flow between at least one first fluid opening and at least one second fluid opening. The spring tongue is arranged on the valve sleeve and forms a positively locking connection between the valve sleeve and the valve body.

A non-return valve for a solenoid valve includes a movable closure element and a valve structural element with a valve seat that is arranged on a through-opening to perform a direction-orientated throughflow and sealing function. The valve seat has a first region and a second region. The first region of the valve seat forms a support region for a sealing element in order to absorb a supporting force with respect to the closure element. The second region of the valve seat forms a sealing region in order to enable sealing with respect to the closure element. A solenoid valve in one embodiment includes the non-return valve.