Patent · US Active

Closed-loop control of brake pressure using a pressure-limiting valve

US8489301B2 · kind B2 · utility

0Cited by

9References

21Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Bettina Crepin · Stuttgart, DE
Michael Bunk · Leingarten, DE
Roland Galbas · Ludwigsburg, DE
Ralf Kinder · Eitelborn, DE
Matthias Schanzenbach · Weinsberg, DE
Christoph Betz · Eschborn, DE

Key dates

Filing date	May 3, 2007
Grant date	Jul 16, 2013
Priority date	—
Expiry date	Apr 14, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T2270/88
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A device for controlling the brake pressure in a hydraulic brake system with the aid of a pressure-limiting valve that limits the brake pressure to a predefined threshold value, and to that end is driven by an electronic device in accordance with a valve characteristic curve. The setting accuracy can be improved considerably if an estimating unit for estimating the brake pressure, a sensor system for measuring the brake pressure, a unit for determining a pressure difference between the measured brake pressure and the estimated brake pressure, as well as a controller unit which drives the pressure-limiting valve as a function of the pressure difference are provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.