Robert Boschgmbh

Frank Schumann

Reinhard Weiberle

Gerhard Wetzel

Klaus Mueller

Ernst-Dieter Schaefer

Guenter Kastinger

Georg Blosch

Michael Klose

Juergen Hilzinger

A braking system for a vehicle is described, including a hydraulic service braking system and an electric service braking system having wheel brakes, to which braking pressure is applied when a brake pedal is operated. To maintain essentially constant vehicle braking behavior during a change in the braking-force distribution between the hydraulic and the electric service braking systems, it is proposed to provide a control unit, which is capable of varying the braking-force distribution and to equip the hydraulic service braking system with a braking pressure modulator that is controlled by the control unit and is able to effect a variable braking-force distribution as a function of the control by the control unit.

Device and method for adjusting the pedal characteristic curve of a hybrid braking system during modified braking-force distribution

The invention relates to an electromechanical wheel brake device, with an electric motor that can press a frictional brake lining against a brake body (brake disk) by a reduction gear (planetary gear) and a rotation/translation conversion gear (ball screw). The invention proposes embodying the electric motor as a transverse flux motor with three phase windings; each phrase winding has a circular, annular excitation winding that is disposed inside U-shaped yokes, which are distributed over the circumference of the excitation winding. This embodiment of the electric motor permits a compact design of the electric motor in an annular, hollow shaft design so that the reduction gear and the rotation/translation conversion gear can be disposed at least partially inside the electric motor.

Electromechanical wheel brake device

The invention relates to an electromechanical wheel brake device with a brake caliper that is embodied of one piece with a gear housing in which a planetary roller screw drive for pressing frictional brake linings against a brake disk and a bevel gear pair for driving the planetary roller screw drive to rotate are accommodated. In order to keep a ring gear free of a force that acts axially on a nut of the planetary roller screw drive when the frictional brake linings are pressed against the brake disk, the device affixes a ring gear of the bevel gear pair in a rotationally fixed and axially mobile manner to the nut, for example by means of a multi-groove profile, and supporting the bevel gear with a separate axial bearing in the rigidly embodied gear housing.

An electromechanically actuatable brake, in which a brake lining is pressed by an electric motor against a brake disk via a threaded roller drive. To enable releasing the brake in the event of a malfunction, a nut of the threaded roller drive is braced axially via a self-locking-free spindle, which is blocked against relative rotation by a permanent magnet brake, the permanent magnet brake is releasable by supplying current to the permanent magnet brake. When the permanent magnet brake is releasable by having current supplied to it, the brake lining pressed against the brake disk sets the spindle, forming the bracing means, into rotation and presses the entire threaded roller drive away from the brake disk and as a result the brake is released.

Electromechanically actuatable brake

The invention relates to a braking device (,) having a spindle gear (,) for actuating a friction brake (,), a gear drive (,) for driving the spindle gear (,) and having an electric motor (,) for driving the gear drive (,). For safety reasons, the invention proposes a second electric return motor (,) for releasing the friction brake (,). Particularly when the two electric motors (,) are connected to mutually independent power supplies, this has the advantage that the friction brake (,), if one of the two electric motors (,) or one of the two power supplies fails, can be released with the other electric motor (,).

Braking device for vehicles

A hydraulic system having a pressure generator which is protected against destructive overload. The hydraulic system has a pulsating feeding pressure generator, such as a piston pump, which feeds pressure fluid at high pressure into a damper chamber of a housing. A throttle body having a throttle bore is disposed on the outlet side of the damper chamber. For producing the protective effect, the damper chamber is preceded by a rupture disk communicating with the outlet. The throttle body suitably has a thin-walled portion, embodied as a rupture disk, in which the throttle bore is located. The embodiment described is advantageously usable in hydraulic systems in which pressure fluids are pulsatingly fed at high pressures.

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Boennigheim, Germany

Frank Schumann