Hydraulic system

US5297381A · kind A · utility

Assignee

• Barmag AG · DE

Inventors

• Otwin Eich · Remscheid, DE
• Franz Peter Salz · Remscheid, DE

Key dates

• Filing date: Oct 15, 1992
• Grant date: Mar 29, 1994
• Expiry date: Oct 15, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F15B2211/71
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a hydraulic system several consumers (5'; 5"; 5'") are supplied by a common regulating pump (1). The regulating pump (1) is controlled as a function between the pump pressure (delta P) and the highest load pressure. This pressure difference (delta P.sub.max) is related to a minimum pressure difference (delta P.sub.min), and the comparison signal is input in a control unit (21) to influence the reference value signals (S1, S2, S3) by which the individual valves (6'; 6"; 6'") are controlled.