A method for switching over a solenoid valve having a movable valve body between a first position and a second position, wherein the method comprises at least the following method steps: a) adjusting a switching current to a pre-energization current intensity, in which the valve body remains in the present position, for a first time interval, and b) adjusting the switching current to a first switchover current intensity, which introduces a switchover movement of the valve body, for a second time interval.

A brake system for a vehicle includes a first brake device for braking a first wheel of the vehicle, a second brake device for braking a second wheel of the vehicle, a first brake pedal which is paired with the first wheel, a second brake pedal which is paired with the second wheel, a brake control valve which is designed to act on the first brake device and/or the second brake device, a first control valve for controlling a brake pressure in the first brake device, and a second control valve for controlling a brake pressure in the second brake device. The brake system further has an electromechanical switching module in order to block or at least reduce a braking effect of the second brake device while the first brake pedal is being actuated, and the switching module is designed to block or at least reduce a braking effect of the first brake device while the second brake pedal is being actuated.

A homogeneity detection circuit, a valve driving system, a vehicle, an integrated circuit and a method of homogeneity detection in a valve driving system are provided. The homogeneity detection circuit comprises a first input, a second input and a comparison circuit. The first input receives a first signal being related to a first driving signal for driving a first valve. The second input receives a second signal being related to a second driving signal for driving a second valve. The comparison circuit compares the first signal with the second signal and generates a warning signal if predetermined differences are detected between the first driving signal and the second driving signal.

A method for specifying switching parameters of a solenoid control valve in a braking system of a vehicle includes stipulating a test vehicle acceleration and ascertaining at least two test pulse sequences. The test pulse sequences are each ascertained on the basis of the stipulated test vehicle acceleration and on the basis of switching parameter default values for the respective solenoid control valve, and the test pulse sequences have actuation pulses and adjoining nonactuation pulses. During an actuation pulse an activation of the respective solenoid control valve and during a nonactuation pulse a deactivation of the respective solenoid control valve takes place. The method further includes actuating the respective solenoid control valve using the at least two test pulse sequences in order to cause at least two test braking operations, wherein the respective test pulse sequence causes an alteration of a braking pressure at a service brake.

A method for operating a pressure control device in a vehicle, in particular in a motor vehicle, wherein current is supplied by an energy source of the vehicle for operating the pressure control device, as a result of which the pressure control device carries out at least one pressure control function, for which at least two actuators of the pressure control device are actuated, wherein at least one current required at maximum for actuating the actuator is determined for each actuator and current budget management for actuating the actuators and/or for carrying out the pressure control functions is performed by the determined currents required at maximum. In addition, the invention relates to a pressure control device for carrying out the method.

The braking device is provided with an electromagnetic valve, which is an example of a device to be controlled, and a valve control unit for driving the electromagnetic valve by means of PWM control. When driving the electromagnetic valve by inputting a drive signal to the electromagnetic valve, the valve control unit changes the frequency of the drive signal within a frequency range. Note that the width of the frequency range is set on the basis of the minimum audible field among equal-loudness contours.

A system for waking up a dormant car control device of rail car braking system that provides a sufficient wake up voltage in response to pressurization of the brake pipe of the transit car. A supercapacitor is used to output a predetermined voltage when a pressure switch responsive to a source of brake pipe pressure moves to a closed position in response to a charging of the brake system. A first circuit boosts the predetermined voltage of the supercapacitor and energized the contacts of a relay that can selectively provide the boosted voltage to an input of a car control device. A second circuit controls the relay to select when boosted voltage should be provided to the input of a car control device. A third circuit selectively provides power to the first and second circuits based on whether the car control device should receive the boosted voltage.

A solenoid valve, in particular for controlling a brake pressure of a wheel brake of a motor vehicle, includes a pole core, an axially moveably mounted armature, a valve element, a closure element, a plunger, and a pressure spring. One end of the armature is associated with the pole core. The valve sealing element is arranged at another end of the armature. The armature has an axial through-opening. The closure element is force-lockingly and/or interlockingly retained in the axial through-opening in a selectable position. The plunger is axially moveably mounted in the axial through-opening, which provides a connection to the pole core in an installation position. The pressure spring is positioned in the axial through-opening and is retained in a pretensioned manner between the plunger and the closure element. The closure element is designed as a three-dimensionally convex element.

A method for specifying switching parameters of a solenoid control valve in a braking system of a vehicle includes stipulating a test vehicle acceleration and ascertaining at least two test pulse sequences. The test pulse sequences are each ascertained on the basis of the stipulated test vehicle acceleration and on the basis of switching parameter default values for the respective solenoid control valve, and the test pulse sequences have actuation pulses and adjoining nonactuation pulses. During an actuation pulse an activation of the respective solenoid control valve and during a nonactuation pulse a deactivation of the respective solenoid control valve takes place. The method further includes actuating the respective solenoid control valve using the at least two test pulse sequences in order to cause at least two test braking operations, wherein the respective test pulse sequence causes an alteration of a braking pressure at a service brake.

The invention has a purpose of obtaining a brake hydraulic pressure controller having improved vibration resistance and a motorcycle brake system including such a brake hydraulic pressure controller. In the brake hydraulic pressure controller, an end (7Eb) of a metal piece (7E) is configured by including: a first portion and a second portion that are separated from each other; a first coupling section that couples one end of the first portion and one end of the second portion; a second coupling section that couples the other end of the first portion and the other end of the second portion; and a penetrating section, an outer periphery of which is configured by including the first portion, the second portion, the first coupling section, and the second coupling section, tongue pieces that are projected to an inner side of the penetrating section are respectively formed in the middle of the first portion and the middle of the second portion, a slit-shaped clearance, in which a terminal is inserted, is formed between a tip of the tongue piece of the first portion and a tip of the tongue piece of the second portion, and middle sections of the first coupling section and the second coupling section have folded shapes.