Robert Boschgmbh

Wolfgang Maisch

Klaus-Jurgen Peters

Michael Wissmann

Karl Gmelin

Peter Schelhas

Hans Kubach

Alwin Stegmaier

Guenter Kaes

Heinrich Knapp

Rainer Burkel

Hermann Nusser

Robert Mergenthaler

Gunther Jaggle

Walter Steinhauser

Guenther Hohl

Peter Werner

Willi Strohl

Wolf-Dieter Jonner

Michael Horbelt

Klaus Mueller

Wilhelm Zirps

Herbert Arnold

Peter Blessing

Martin Oehler

Norbert Mittwollen

Stefan Otterbein

Peter Stiefel

Erich Rubel

Eugen Joos

Erich Singer

Clemens Willke

Bernd Lieberoth-Leden

Helmut Domann

Erik Mannle

Harald Hellmann

Michael Klose

Hermann Gassler

Hans-Peter Huebner

Jurgen Treiber

Rudolf Schutz

Wolfgang Schafer

Walter Bosch

Volker Epple

Jean Pierre Leroy

Andre Bonin

Alain Constanty

Jurgen Peters

The wheel brakes of each vehicle axle or side or diagonal are supplied with current by a separate voltage source. To reduce the load on the vehicle's electrical system, the wheel brakes of a front axle are supplied with current first, and then the wheel brakes of a rear axle are supplied with current.

Electric motor-driven wheel brake for vehicles

Electric motor wheel brake for vehicle

An electronic brake system for a vehicle which has control modules for adjusting the braking force at the wheels of the vehicle, a control module which determines at least the driver's braking command, and at least one communications system which connects the modules to each other, where, to supply the elements with energy, at least two independent vehicle electrical systems (E.sub.1, E.sub.2) are provided, at least one of the elements being connected to an electrical system different from that to which the other elements are connected.

Electrical brake system

Method and device for controlling a vehicle braking system

Electromagnetically actuated valve for slip-controlled hydraulic brake

A damping device for pressure pulsations having a first hollow chamber for receiving hydraulic pressure fluid and a second hollow chamber. An elastic metal diaphragm that divides the second hollow chamber hermetically from the first hollow chamber. The second hollow chamber is evacuated, so that in the event that the metal diaphragm should possibly leak, no air can get into the hydraulic pressure fluid. The damping device can be used in hydraulic brake systems having a master cylinder and in other hydraulic systems.

Damping device, particularly for hydraulic brake system

Circuit provides maximum current to an electric motor for a hydraulic pump in a brake system for a brief time interval after the motor is switched on, and thereafter limits the current to a lower value which corresponds to the torque necessary for generating the pressure required in the system.

Electric motor-driven hydraulic pump

A hydraulic brake system for a vehicle having a traction control system, in which at least one self-aspirating pump, pressure fluid can be aspirated through an intake line and a charging valve and can be fed into a brake line leading to at least one wheel brake. A pressure limiting valve that diverts pressure fluid from the brake line to the intake line is also provided. To speed up the braking intervention, the pump is briefly turned on and the charging valve is opened when the vehicle is started, to carry away any gas bubbles that might be located between the charging valve and the pump. This averts the possibility that the compression of gas bubbles that might be present at the onset of traction control could cause the pump to pump less pressure fluid. The method can be employed in hydraulic brake systems of motor vehicles with traction control systems.

Method for speeding up the braking intervention in the traction control

A method for switching a pressure control device in which the pressure control device is switched only whenever the pressure of the pressure fluid prevailing on the master brake cylinder side of the pressure control device exceeds a predetermined switching pressure of the pressure control device. In this way, the switching frequency and hence wearing of the pressure control device are greatly reduced. The magnet coil is designed or excited such that it heats to a lesser extent upon its excitation. The method is especially suitable for pressure control devices that are provided in a hydraulic brake system for motor vehicles having an anti-skid system.

Method for switching a pressure control device

System for controlling an internal combustion engine

A slip control system for a hydraulic brake system of a vehicle, which comprises a pressure generator having a plunger piston, which plunges into a cylinder filled with brake fluid and is connected to a rack. For the forward drive of the plunger piston, an electric drive motor is provided, which via a gear drive drives a pinion meshing with the rack. For the return drive of the plunger piston, a spiral spring is used that engages on one end with pinion shaft and on the other is supported on the pressure generator housing. The use of the spiral spring makes a short axial structural length of the pressure generator attainable. A grip roller free-wheel clutch is also provided in the drive train between the motor and the rack. The grip roller free-wheel clutch effects an uncoupling of the gear drive and the drive motor when the rack, at the end of the return stroke, strikes a stop of the pressure generator housing. This prevents damage to the gear drive and motor.

Electric-motor-drivable pressure generator for a hydraulic brake system

The invention relates to a device for a hydraulic unit, in particular in anti-skid systems for vehicle brake systems, which has a radial piston pump. The eccentric driven by a drive shaft in the pump meets pump pistons also located in the pump, usually in the region of high stroke variation speed. An resultant mechanical and hydraulic vibration, which causes noise and annoying movement at the brake pedal, is counteracted according to the invention in that a resilient intermediate element is disposed between the pump pistons and the eccentric element, and the eccentric is driven via a torsionally elastic coupling.

Device for anti-skid brake system

A brake system including a traction control apparatus having at least one pressure generator 35, which has a cylinder 60 for receiving and expelling brake fluid by means of a piston 60. The cylinder 60 is connected, with a valve 72 actuatable as a function of the motion of the piston 50, to a pressure course between the master brake cylinder and a wheel brake cylinder. To attain a short structural length, on the one hand, and a long stroke of the pressure generator on the other, the piston is embodied as a rod piston; it is connected to a coaxially extending hollow cylinder 40 that envelops the piston 50 in the cylinder 60; the hollow cylinder 40 is longitudinally guided and is provided with a racklike set of teeth 41 on its outside for the engagement of a motor drive mechanism 43 for driving the piston relative to the cylinder.

Pressure generator for a hydraulic brake system for a vehicle

In a so-called starting aid for motor vehicles, synchronism in the rpm of the drive wheels during starting is provided by feeding a brake pressure derived from the rpm difference of the drive wheels into the wheel brake cylinder associated with the wheel having the higher rpm. To this end, one brake pressure controller having a control piston and a valve is installed in each brake line to the wheel brake cylinders of at least two wheel brakes. The control pistons are actuated in opposite directions via a final control element to which a control signal derived from the rpm difference is supplied. Upon displacement, whichever control piston is driven closes the valve and feeds brake pressure into the associated wheel brake cylinder. In order that the starting aid will have a high control speed and a small structural volume, the final control element is embodied as an electric control motor.

Apparatus for synchronizing the rpm of drive wheels of a motor vehicle

Growing community of inventors

Schwieberdingen, Germany

Wolfgang Maisch