Patent · US Expired

Hydraulic brake system with a precharging device

US6796619B1 · kind B1 · utility

5Cited by

9References

8Claims

0Family size

Assignee

Continental Teves AG & Co. OHG · DE

Inventors

Axel Hinz · Neu-Anspach, DE
Erhard Beck · Darmstadt, DE
Michael Jung · Frankfurt am Main, DE
Hans-Dieter Reinartz · Frankfurt am Main, DE

Key dates

Filing date	Jul 7, 1999
Grant date	Sep 28, 2004
Priority date	—
Expiry date	Jul 7, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T8/4059
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

The return pumps of brake systems with a precharging device are greatly stressed by the precharging pressure and subjected to premature wear. Significant leakage occurs in the long run which will damage the pump motors in the worst case. This is prevented by controlling the pressure fluid supply from the precharging source to the suction side of the return pump as a function of the pressure gradient in this connecting line. To this end, an electromagnetically operated on-off valve (23) with a hydraulically insertable throttle is used.

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