Hydropneumatic suspension system

US6669216B1 · kind B1 · utility

Assignee

• ZF Lenksysteme GmbH · DE

Inventors

• Dieter Elser · Oberkochen, DE
• Andreas Braun · San Diego, US
• Manfred Heintschel · Schwäbisch Gmünd, DE
• Wolfgang Zeitz · Deggendorf, DE

Key dates

• Filing date: Jul 2, 2001
• Grant date: Dec 30, 2003
• Expiry date: Jul 2, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60G2202/154
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hydropneumatic suspension system for motor vehicles, having at least one hydropneumatic support aggregate and one automatic level control system cooperating with the aggregate, the automatic level control system, as a function of the lift position of the wheels, sending hydraulic fluid from the hydropneumatic pressure reservoir into the hydropneumatic suspension cylinders, or drawing hydraulic fluid from the hydropneumatic suspension cylinders into the pressure reservoirs, and the functions of suspension, roll stabilization, and automatic level control being able to be performed using the hydropneumatic suspension cylinders.