Continental Teves, Ag and Company Ohg

Itt Manufacturing Enterprises, Inc.

Continental Automotive Technologies Gmbh

Ims Gear Se & Co Kgaa

Continental Teves Ag & Ohg

Jürgen Böhm

Marco Besier

Steffen Linkenbach

Johann Jungbecker

Georg Roll

Stefan A Drumm

Peter Stauder

Tom Kaufmann

Joachim Nell

Paul Linhoff

Oliver Hoffmann

Norman Muth

Andreas Schirling

Ronald Bayer

Peter Schack

Hermann Winner

Marc Menzel

Robert Schmidt

Holger Von Hayn

Uwe Bach

Peter E Rieth

Ulrich Neumann

Jens Hoffmann

Christof Maron

Jürgen Balz

Thorsten Ullrich

Harald Biller

Bernhard Giers

Wolfram Hofschulte

Jochen Führer

Karlheinz Bill

Johannes Görlach

Wilfried Synovzik

Matthias Muntu

Zlatko Penzar

Martin Brenn

Jochen Beuss

Anselm Keil

Andreas Kircher

Achim Netz

Christian Vey

Martin Semsch

Martin Kruse

Sascha Gröger

Johannes Stöhr

Timo Sauerwald

Christian Philipp

Karl-Heinz Bill

Sebastian Müller

Peter Scherer

Jens Jager

Ingo Viehböck

Thomas Rath

Erika Fischbach, Legal Representative

Walter Fischbach, Legal Representative

Matthias Kuhn

Sascha GRÖGER

Sebastian MÜLLER

Johannes STÖHR

Jens JÄGER

Burkhard Fischbach

An electromechanical brake device has a brake caliper and a pressure piston mounted in the brake caliper such that it can move in a clamping direction, wherein the brake device has an electromechanical clamping device, wherein the clamping device is supported, on one side, on the pressure piston and is designed to apply to the pressure piston a force acting in the clamping direction. It is provided that the brake device has at least one hydraulically sealed, fluid-filled cavity, wherein the clamping device is supported, on the other side, indirectly on the brake caliper via the fluid-filled cavity, and wherein a pressure sensor is hydraulically connected to the fluid-filled cavity and is designed to calculate the fluid pressure inside the fluid-filled cavity.

Electromechanical brake device

A method and apparatus for holding a motor vehicle by means of an electrically actuated brake comprises applying the brake until a target force is reached. For holding purposes, a motor torque is reduced by applying a negative preset value for a target angular velocity for a motor torque of an electric actuator of the brake.

Method for holding a motor vehicle in place and electrically actuated brake

A brake system for a motor vehicle has electromechanical wheel brakes, a brake operating unit and a central brake control unit. The wheel brakes each have a local brake control unit. The central brake control unit is connected to the brake operating unit and the local brake control units via a first data connection. The brake operating unit is connected to the local brake control unit of at least one wheel brake via a second data connection. In a normal operating mode the central brake control unit determines at least one brake demand from first operating information, received via the first data connection and transmits control signals corresponding to the brake demand to the local brake control units. In a fallback operating mode the local brake control units actuate the respective wheel brakes basis on second operating information, received via the second data connection.

Brake system for a motor vehicle

A method for determining an operating variable of a drum brake comprises actuating the brake in at least one of: a first wheel speed range and a second wheel speed range. The operating variable is calculated based on bearing force of a leading brake shoe and the further bearing force of a trailing brake shoe when in the first wheel speed range. The operating variable is calculated when in the second wheel speed range based on a current actuator position and an actuator contact position, in which brake shoes of the drum brake come into engagement with a drum of the drum brake.

Method for determining an operating variable of a drum brake, drum brake assembly

A method for operating a motor vehicle brake system having hydraulic wheel brakes; an atmospheric pressure pressure medium reservoir; a pressure modulation unit setting wheel-specific brake pressures, an electrohydraulic pressure provision device connected to the pressure modulation unit and the pressure medium reservoir which outputs brake system pressure to the pressure modulation unit and draws in pressure medium from the reservoir; a first and second pressure activation valve connecting the pressure provision device to the pressure modulation device. A piston of the piston-cylinder arrangement separates two pressure spaces from one another. A pressure build-up occurs in the first pressure space during a backward movement of the piston and in the second pressure space during a forward movement of the piston. During a brake pressure build-up by a forward stroke of the piston, the activation valve is opened and the first pressure space is hydraulically separated from the pressure medium reservoir.

Method for operating a brake system, and brake system

A method for ascertaining an operating variable of a drum brake, the method using forces acting on supporting bearings. The invention further relates to an associated drum brake assembly, an associated analysis unit and an associated storage medium.

Method for ascertaining an operating variable of a drum brake, drum brake assembly, analysis unit, and storage medium

A brake installation for a motor vehicle. First and second pressure provision devices build up brake pressure in the wheel brakes. The first pressure device connected to a first wheel brake of a first brake circuit and to a second wheel brake of the first brake circuit. The second pressure device connected to a third wheel brake of a second brake circuit and to a fourth wheel brake of the second brake circuit. Each pressure device is respectively activated by an open-loop/closed-loop control unit. A first hydraulic line, with a normally open isolating valve, connects the first wheel brake line of the first brake circuit to the first wheel brake line of the second brake circuit. A second hydraulic line, with a normally open isolating valve, connects the second wheel brake line of the first brake circuit to the second wheel brake line of the second brake circuit.

Brake system having two pressure-providing devices and method for operating a brake system

A planetary gear assembly, in particular for an electromechanical service or parking brake for a motor vehicle. The planetary gear assembly can include a central sun gear, a plurality of planetary gears rotatably mounted on a planetary carrier, and a ring gear enclosing the planetary gears. The planetary gears can be mounted by the planetary carrier, such that the planetary gears roll off both the sun gear and the ring gear, whereby the sun gear, the planetary carrier or the ring gear is non-rotatably held by a holding unit with a holding torque. A force-sensing device can be arranged between the holding unit and the non-rotatably held element, or between the holding unit and an intermediate component non-rotatably connected to the held component. The force-sensing device can measure the force acting between the held component and the holding unit as a result of the holding torque.

Planetary gear arrangement particularly for an electromechanical service brake or an electromechanical parking brake for a motor vehicle

A method and control system for controlling an electromechanical actuator () of a brake system for motor vehicles, in which a measured actual value, of a controlled variable is intended to be set to a specified target value. A first actuator speed target value is determined on the basis of the target value and the actual value by a first controller (), and wherein a manipulated variable for the electromechanical actuator (I,) is determined on the basis of the first actuator speed target value and a second actuator speed target value. The second actuator speed target value is determined on the basis of the target value and a specified relationship () between the controlled variable and a variable corresponding to a position of the electromechanical actuator.

Method for controlling an electromechanical actuator, and control device

A method for regulating motor vehicle electrohydraulic brake systems having a pressure supply apparatus actuated by a control unit and hydraulically connected to wheel brakes via a pressure regulating valve. The pressure supply apparatus includes a cylinder-piston assembly operated by an electromechanical actuator. A set point pressure value is determined for each wheel brake. The cylinder-piston assembly is actuated to a predetermined pilot pressure in the hydraulic pressure chamber. A pilot pressure actual value and an actuator speed actual value are obtained. A pilot pressure set point value, the pilot pressure set point value and the pilot pressure actual value are fed as input variables to a regulator which outputs an actuator speed set point value. The actuator speed and actual set point values are fed as inputs to the speed regulator. The actuator speed set point value is modified as a function of the number of brakes.

Method and device for regulating a brake system

An electrohydraulic brake system method for motor vehicles having a wheel-specific brake control function (ABS, ESC, TCS) and hydraulically actuable wheel brakes (), communicating with an electrically controllable pressure supply device. The pressure supply device () having a cylinder-based piston arrangement with a pressure space driven by an electromechanical actuator (). To set a brake system pressure (Psys) wherein a wheel-specific wheel setpoint pressure (Pi) is predefined for each wheel brake, and a pressure regulating process () is carried out, wherein at certain times a control process () of the pressure medium volume which is output by the pressure supply device is carried out instead of the pressure regulating process () of the brake system pressure, switching over () from the pressure regulating process to the control of the pressure medium volume is carried out as a function of the wheel setpoint pressures (Pi).

Method for operating a brake system for motor vehicles and a brake system in which the method is carried out

A method for controlling a braking system for motor vehicles having a hydraulically actuatable wheel brake which can be actuated by an electronically controllable pressure supply device having a cylinderpiston arrangement with a hydraulic pressure chamber, the piston of which can be displaced by an electromechanical actuator such that a pre-defined desired pressure value can be adjusted, a position of the pressure supply device being detected, and an actual pressure (P) of the pressure supply device being determined by a measurement device. To allow braking pressure to build dynamically at low or medium desired pressure values, manipulated variables (&#x3c9;,M) are formed for the electromechanical actuator () on the basis of the pre-defined desired pressure value and of an actual pressure value (P), determined on the basis of the desired pressure value (P) by weighted addition of the actual pressure (P) and of a model pressure (P) calculated from a current position (X) of the pressure supply device.

Method for controlling a braking system for motor vehicles

The invention relates to a method for operating a brake system, in particular for motor vehicles, having an electrically controllable pressure supplying device for hydraulically actuating at least one wheel brake. The pressure supplying device includes a cylinder-piston arrangement with a hydraulic pressure chamber. The piston of the cylinder-piston arrangement being movable by an electromechanical actuator in order to generate a specificable target pressure in the hydraulic pressure chamber. An actuator torque and an actuator position of the electromechanical actuator are ascertained, and a pressure value for the pressure in the hydraulic pressure chamber is determined using the actuator toque and the actuator position taking into consideration a pressure model.

The invention relates to a method for providing haptic information to the driver of a motor vehicle, equipped with a brake-by-wire brake system, about the operating state of the brake system, in which method the brake pedal characteristic is generated by a pedal travel simulator, in the form of a functional relationship between the brake pedal opposing force and the brake pedal travel, and is modified as a function of an operating state. In order to provide the driver with the haptic information channel via which electronically controlled information can be communicated to the driver during braking, without the impression of a defect arising, the invention proposes that a basic brake pedal characteristic is generated by a passive simulator spring which assigns pedal travel, on which pedal return travel transporting the haptic information is superimposed, to a given pedal force in an unchanging, constant relationship.

Method for providing haptic information to the driver of a motor vehicle

A method and system is provided for controlling an electrohydraulic braking system for a motor vehicle having an antilock braking control function and an electrically controllable pressure generating device having a cylinder-piston arrangement having a hydraulic pressure chamber and a piston displaceable by an electromechanical actuator so that a predetermined pressure can be set in the chamber, and having a number of hydraulically wheel brakes connected to the hydraulic pressure chamber by an electrically actuatable inlet valve and to a pressure medium reservoir via an electrically actuatable outlet valve. The cylinder-piston arrangement is actuated in case of antilock controlling at all wheel brakes for setting an individual wheel target pressure at each wheel brake, such that the pressure in the hydraulic pressure chamber is set to the greatest wheel target pressure.

Method for controlling an electrohydraulic braking system and electrohydraulic braking system

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Oberneisen, Germany

Jürgen Böhm