Ralf Leiter

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Experienced, with both legs on earth, workaholic. I like the french style of living. I respect every human, animal or plant and I worked already with many nations and characters.Interested in Technology, History and Coins.

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Jayjit Majumdar

University of Kalyani

Nicole Herbots

Arizona State University

fazlollah habibi

University of Sistan and Baluchestan

Santina Di Salvo

Università degli Studi di Palermo

Haci Deveci

Karadeniz Technical University

Marco V. Boniardi

Politecnico di Milano

Deniz Ekinci

Istanbul University

H. Tributsch

Paul Adams

SUNY: Stony Brook University

FARNAZ SADAT FATTAHI

Isfahan University of Technology

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Papers by Ralf Leiter

Hydraulic vehicle brake

Brake System and Method

Brake Function Monitoring

IMechE, 1991

Pictures for Function Monitoring

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Brake Function Monitoring Englisch

iMechE, 1991

Temperature Monitor to determine Function of Brake systems

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Bremssysteme der Zukunft Langfassung

Fachhandelstag Fa. Schautz, 1991

Summary of Brake Systems

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Mikrorechner als elektronisches Steuergerat fur ABS

Konferenz Rationalisierung Zwickau, 1985

Abs Control by Microprocessor

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Leistungselektronik zur Ansteuerung von Magnetventilen

International Student Conference Zwickau, 1986

Beiträge zur Entwicklung von Antiblockiersystemen

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Design and Control of an Electric Parking Brake

The combination of the growing need for comfort and the increase in safety requirements has resul... more The combination of the growing need for comfort and the increase in safety requirements has resulted in the development of the power window, the electronic seat and mirror adjustment and ultimately, in the development of the electric parking brake. While the basic concept remains the same for all vehicles, functionality and operational concepts will continue to serve as the criteria for differentiating between the vehicle classes and vehicle manufacturers. The product development described in the following pages offers a multitude of possibilities in this regard. As in the case of all new electronic systems, a cost benefit cannot be directly anticipated at the beginning of the series introduction; in the long run, however, the product is shown to demonstrate adequate potential. For the covering abstract see ITRD E119187.

Method and device for braking equipment conrolar ofa motor vehicle

Method for controlling braking equipment of a motor vehicle, comprising the following steps: - de... more Method for controlling braking equipment of a motor vehicle, comprising the following steps: - determining an operating state of a motor vehicle in which the vehicle should move from a traveling state to a stopping state, and - controlling a braking equipment (BBA, FBA) of the motor vehicle such that independently of an actuation of the braking equipment (BBA, FBA) by a driver appropriate braking forces are generated to keep the vehicle in the stop state after have come short of, characterized in that - in the stop state a drive train (GTR) and / or an engine (MTR) of the motor vehicle is automatically disabled.

Procede et systeme pour commander un frein de stationnement d'un vehicule a moteur a l'arret

L'invention concerne un procede et un systeme pour commander un frein de stationnement d'... more L'invention concerne un procede et un systeme pour commander un frein de stationnement d'un vehicule a moteur. Selon ce procede, un signal d'allumage et un etat d'actionnement du frein de stationnement sont saisis, puis la force de serrage du frein de stationnement est reglee sur une premiere valeur en fonction de l'etat d'actionnement du frein de stationnement, tant que le signal d'allumage est en fonctionnement. Si le frein de stationnement etait serre auparavant, la force de serrage est reduite et passe d'une deuxieme valeur a une premiere valeur. Si le frein de stationnement etait desserre, la force de serrage est augmentee pour atteindre la premiere valeur, qui suffit pour maintenir le vehicule dans sa position momentanee.

Method and system for the driveaway of a motor vehicle

The invention relates to a starting assistance system for a motor vehicle comprising brake equipm... more The invention relates to a starting assistance system for a motor vehicle comprising brake equipment which, in the stationary state of the motor vehicle, produces the brake forces required for the stationary state of the motor vehicle, either automatically or under the control of a driver of the vehicle. In order to assist the starting of the motor vehicle by reducing the brake forces produced in the stationary state, a driver's intention to start a vehicle is determined when the conditions which are predetermined in the stationary state and which are to be fulfilled in order to start the motor vehicle, are fulfilled. If an intention to start is detected, the operating state of the motor vehicle is checked until an operating state required for starting the vehicle is achieved. When one such operating state is reached, the brake equipment of the motor vehicle is controlled in such a way that the brake forces produced thereby in the stationary state are reduced in order to start t...

An electric actuator for a vehicle brake assembly

Drum brake assembly comprising: a mounting flange having an abutment; a mounting flange attached ... more Drum brake assembly comprising: a mounting flange having an abutment; a mounting flange attached to the support plate, on which two brake shoes are supported; and an electric actuator for actuating the drum brake assembly to move the brake shoes selectively movable between a braking position and a brake release position, said part of the electric actuator, a motor, also a gear train engaged with the motor in drive connection, to be driven, a spindle nut which is engaged with the pinion gear in driving connection to be set in rotation, a pull rod, which is connected to the spindle nut drivingly connected to be driven in translation, and a brake shoe actuating members arrangement which communicates with the pull rod is in driving connection to be actuated, and thereby move the brake shoe between the braking position and the brake release position, said tie rod is connected to the brake shoes actuators arrangement by a connecting member in driving connection, of which a first end pivot...

Operation of a braking system of a vehicle based on the temperatures of the braking surfaces

Procedure for a braking system of a vehicle in which the temperature of a brake surface (BD) acco... more Procedure for a braking system of a vehicle in which the temperature of a brake surface (BD) according to a deceleration or an acceleration in the braking system of the vehicle (BS) activated is determined and the magnitude is controlled of the braking forces on the brake surface (BD) from an activation of the braking system of the vehicle (BS) depending on the temperature of the brake surface (BD), with the following steps: - Generation of forces braking the brake surface (BD) to achieve or maintain a state of motion desired for the vehicle, - determination of the temperature of the brake surface (BD), - Determination of braking forces at the brake surface ( BD), - Setting a temperature change of the brake surface (BD), and - control the magnitude of braking forces at the brake surface (BD) when the braking forces as a result the detemperatura variation of the braking surface, they are not suitable to achieve or maintain the running state desired for the vehicle, characterized in t...

Electromechanical parking brake system and electronic system for operating the same

Procede et dispositif pour piloter une installation de freinage d'automobile

L'invention concerne un procede et un dispositif pour piloter une installation de freinage d&... more L'invention concerne un procede et un dispositif pour piloter une installation de freinage d'automobile. A cet effet, un etat de fonctionnement d'une automobile est determine, etat de fonctionnement selon lequel l'automobile doit passer d'un etat ou sa vitesse est differente de zero, dans un etat ou ladite automobile ne bouge plus. Si un passage de ce type d'un etat de marche a un etat d'immobilisation est determine, une installation de freinage de l'automobile est pilotee de sorte a produire des forces de freinage propres a faire passer l'automobile en etat d'immobilisation et/ou a porter assistance au conducteur. Il est en outre possible, a l'etat d'immobilisation, de produire des forces de freinage necessaires pour maintenir le vehicule a l'arret. La presente invention permet egalement de porter assistance au conducteur, lors du demarrage d'une automobile. A cet effet, un etat de fonctionnement de ladite automobile est detec...

Systeme de frein de stationnement electromecanique et systeme electronique pour le faire fonctionner

La presente invention concerne un systeme electronique pour faire fonctionner un systeme de frein... more La presente invention concerne un systeme electronique pour faire fonctionner un systeme de frein de stationnement electromecanique d'un vehicule. Ce systeme comprend une unite d'entree (10) permettant de recevoir un souhait du conducteur qui est analyse par une unite de commande assurant la commande d'au moins une unite de reglage (31, 32) pour actionner au moins un frein. Selon cette invention, l'unite de commande est composee d'au moins deux composants de commande (21, 22), un premier composant de commande (21) etant associe a l'unite d'entree (10) et au moins un deuxieme composant de commande (22, 23) etant associe a ladite unite de reglage (31, 32).

Feststellbremseinrichtung und mit feststellbremseinrichtung ausgeführte fahrzeugbremsanlage

Die Erfindung betrifft eine Feststellbremseinrichtung mit einem Federelement (42) und einem auf d... more Die Erfindung betrifft eine Feststellbremseinrichtung mit einem Federelement (42) und einem auf das Federelement (42) einwirkenden Betatigungsglied (52), wobei die Feststellbremseinrichtung durch Anlegen einer Betatigungskraft (F) auf das Betatigungsglied (52) zwischen einer bremswirkungslosen Freigabestellung und einer bremswirksamen Feststellstellung verlagerbar ist. Bei der Erfindung ist vorgesehen, dass das Federelement (42) in der Freigabestellung vorgespannt ist und dass das Federelement (42) bei Ubergang von der Freigabestellung in die Feststellstellung erst bei Erreichen eines durch die Vorspannung bestimmten Betatigungskraft-Schwellenwertes nachgibt.

Braking system and method

System to be applied by a brake braking force setting with a module for estimating the weight of ... more System to be applied by a brake braking force setting with a module for estimating the weight of the vehicle on which the brake is mounted, and a module for determining the angle of inclination, on which the vehicle is positioned, and a control unit for calculating a sufficient to be applied braking force (FH) according to predetermined criteria based on the estimated weight and the tendency to maintain the vehicle in a stationary state, wherein the control unit is configured to signal the brake to apply the computed force value, wherein the system further comprises a module for estimating the temperature of a brake component comprises and is configured to the size of the braking force (FH) to determine which is required to keep the vehicle in a stationary state continues on the basis of contraction of the brake component through the cooling of the component from a temperature the higher than ambient Tempe is temperature, after the component has reached the ambient temperature and w...

Electromechanical Parking Brake Device and Electronic System for Operating Same

Method and System for Assistance in Starting a Motor Vehicle

Hydraulic vehicle brake

Brake System and Method

Brake Function Monitoring

IMechE, 1991

Pictures for Function Monitoring

Download

Brake Function Monitoring Englisch

iMechE, 1991

Temperature Monitor to determine Function of Brake systems

Download