Continental Teves, Ag and Company Ohg

Alexander Treib

Ralph Gronau

Andreas Neu

Holger Kollmann

Michael Kutzner

Michel Wagner

Peter Leska

Hans Schroth

Jörg Berntheusel

Erik Händler

Peter Handke

Silvio Färber

Abolfazl Akbari-Namwar

Patrik Henke

A method for conveying a metered hydraulic volume in a vehicle braking system by an electrically driven motor pump assembly, wherein a mechanical pump of the motor pump assembly is driven by an electric motor of the motor pump assembly. A rising motor voltage ramp is applied to the electric motor, a motor current being detected, and a conveying mode of the motor pump assembly starting as soon as a motor torque generated by the motor current exceeds a total of drag torque, breakaway torque and friction torque of the motor pump assembly. The motor current reduces when the conveying mode starts. The method is characterized in that, when a reduction in the motor current is detected after a specified time interval has elapsed, a motor voltage is reduced to a value which ends the conveying mode. The invention further relates to a vehicle braking system.

Method for conveying a metered hydraulic volume in a vehicle braking system by means of an electrically driven motor pump assembly and vehicle braking system

In a method for optimizing the pressure setting accuracy, a hydraulic pressure is built up according to a pressure requirement of a hydraulic pump, and overflow control is performed using an analog-controlling hydraulic valve and a known control characteristic curve of the analog-controlling hydraulic valve, which overflow control counteracts a pressure build-up produced by the hydraulic pump that exceeds the pressure requirement. In addition to the known control characteristic curve of the analog-controlling hydraulic valve, at least one additional valve characteristic is taken into account for the overflow control.

Method for optimizing the pressure setting accuracy

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Munich, Georgia

Alexander Treib