Power steering system for motor vehicles

US6971408B2 · kind B2 · utility

Assignee

• ZF Lenksysteme GmbH · DE

Inventors

• Peter Ertle · Durlangen, DE
• Markus Schuster · Ann Arbor, US
• Dieter Sauter · Heubach, DE

Key dates

• Filing date: Dec 10, 2003
• Grant date: Dec 6, 2005
• Expiry date: Feb 19, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86638
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A power steering system for motor vehicles, fitted with a rotary disk valve and comprising a reaction piston (1) defining an active (2) and a passive reaction chamber (3). A servo pressure can be fed to the reaction chamber (2) in order to modify the actuating force on the steering wheel. A damping piston (4)is arranged on the active reaction chamber (2) in order to receive dynamic oscillations of the reaction pressure.