Patent · US Expired

Method for monitoring an electrohydraulic vehicle braking system

US7034673B2 · kind B2 · utility

2Cited by

11References

8Claims

0Family size

Assignee

Centinental Teves AG & Co., OHG · DE

Inventors

Gunther Buschmann · Griesheim, DE
Robert Schmidt · Schopfheim, DE
Thorsten Ullrich · Gernsheim, DE

Key dates

Filing date	Oct 7, 2002
Grant date	Apr 25, 2006
Priority date	—
Expiry date	Feb 5, 2023

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T17/221
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

Method for monitoring an electrohydraulic braking system. The volume uptake is determined by the elasticity within the wheel brake that is subjected to certain fluctuations, on the one hand, and to a much greater degree by the clearance that is present, on the other hand. To make a reliable statement relating to the air charge, an estimation of the current clearance is first made, taking three ranges into consideration. If there is a normal clearance, a top evaluation threshold is taken as a basis, which assumes the clearance lies at the upper end of the normal range. When said evaluation threshold is exceeded, an alarm is triggered. If the clearance is assumed to lie at the bottom limit of the normal range, a bottom evaluation threshold applies, however, an alarm is only triggered in this case this situation has occurred several times in succession.

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