Continental Teves, Ag and Company Ohg

Ralf Schröder

Dieter Dinkel

Holger Kollmann

Marc Lenz

Alexander Schönbohm

Bartosz Maj

Jurij Schmidt

Marcus Bletz

Tomislav Milic

A method for determining a switching state of a valve that is actuated by a coil, wherein the method includes: respectively ascertaining a current flowing through the coil and a voltage applied to the coil at several times which follow one another with a prespecified time interval, calculating an inductance variable of the coil based on the currents, the voltage and the time interval, and determining the switching state based on the inductance variable. Also disclosed is a solenoid valve assembly.

Method for determining a switching state of a valve, and solenoid valve assembly

A brake system, including four hydraulically actuatable wheel brakes. Each wheel brake is assigned in each case one outlet valve which is closed when electrically deenergized. Each wheel brake is assigned in each case one inlet valve which is open when electrically deenergized. The brake system furthermore includes a simulator which is actuatable by a brake pedal, wherein two pressure provision devices are provided for actively building up pressure in the wheel brakes, two brake circuits are hydraulically formed, wherein, in each brake circuit, in each case one pressure provision device is hydraulically connected to two wheel brakes, and wherein two separate on-board electrical systems are provided, and wherein each pressure provision device is fed in each case by one of the two on-board electrical systems.

Brake system with two pressure sources, and two methods for operating a brake system

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Wehrheim, Germany

Ralf Schröder