Global Patent Index - EP 1101949 A2

EP 1101949 A2 2001-05-23 - Device for controlling the hydraulic flow volume of at least one working medium under pressure

Title (en)

Device for controlling the hydraulic flow volume of at least one working medium under pressure

Title (de)

Vorrichtung zur Steuerung eines hydraulischen Volumenstroms zumindest eines belasteten Arbeitsmittels

Title (fr)

Dispositif pour régler le débit hydraulique d'au moins un agent de travail sous pression

Publication

EP 1101949 A2 (DE)

Application

EP 00116754 A

Priority

DE 19955521 A

Abstract (en)

The control device controls the hydraulic volume flow (10) of at least one fluid (12) and has a locking valve with main valve body (14) and fine control (18), and with a pre-control valve body (22) operated by a setting element. At least one throttle cross section of a throttle point (38) narrows towards the beginning of the opening stroke of the main valve body.

Abstract (de)

Die Erfindung geht aus von einer Vorrichtung zur Steuerung eines hydraulischen Volumenstroms (10) zumindest eines belasteten Arbeitsmittels (12) mit zumindest einem Sperrventil, das einen Hauptventilkörper (14) aufweist, der mit einer Hauptventilfeinsteuerung (18) zusammenwirkt, und mit einem von einem Stellelement (20) betätigbaren Vorsteuerventilkörper (22), mit dem der Hauptventilkörper (14) hydraulisch steuerbar ist, wobei ein Vorsteuervolumenstrom (36) stromaufwärts von einem Vorsteuerventilsitz (26) über zumindest einen Drosselquerschnitt einer Drosselstelle (38, 40) geleitet ist. Es wird vorgeschlagen, daß wenigstens ein Drosselquerschnitt einer Drosselstelle (38), über den der Vorsteuervolumenstrom (36) geleitet ist, zumindest zu Beginn mit dem Öffnungshub des Hauptventilkörpers (14) zunimmt. <IMAGE>

IPC 1-7 (main, further and additional classification)

F15B 13/01

IPC 8 full level (invention and additional information)

F15B 13/01 (2006.01); F15B 13/00 (2006.01)

CPC (invention and additional information)

F15B 13/015 (2013.01); F15B 2013/008 (2013.01)

Citation (applicant)

DE 4140604 A1 19930617 - BOSCH GMBH ROBERT [DE]

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 1101949 A2 20010523; EP 1101949 A3 20040114; EP 1101949 B1 20060419; DE 19955521 A1 20010523; DE 50012599 D1 20060524

INPADOC legal status


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