Patent · US Active

Method for detecting changes in the rigidity of a hydraulic brake system

US8577542B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Thilo Stephan · Heilbronn, DE
Ralf Kinder · Eitelborn, DE
Dirk Mahnkopf · Ludwigsburg, DE

Key dates

Filing date	Nov 26, 2008
Grant date	Nov 5, 2013
Priority date	—
Expiry date	Apr 7, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T17/02
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

In a method for detecting air in the brake circuit of a motor vehicle having a hydraulic brake system that has a vacuum brake booster, the pressure prevailing in the vacuum chamber of the vacuum brake booster in the operated and the non-operated states of the brake is measured, and a parameter characteristic of the brake performance is determined as a function of the measured pressure, and the characteristic parameter is compared to a reference value.

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