Hydraulic system for actuating at least two operational areas in a vehicle

US6223763A · kind A · utility

Assignee

• Hydraulik-Ring GmbH · DE

Inventors

• Roland Meyer · Jeffery Road, DE
• Andreas Knecht · Herrenberg, DE
• Dieter Tischer · Wissen, DE
• Bernd Niethammer · Jeffery Road, DE
• Alfred Trzmiel · Gräfenberg, DE

Key dates

• Filing date: Jul 30, 1999
• Grant date: May 1, 2001
• Expiry date: Jul 30, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/2652
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic system for a vehicle including a distributor, or switch, valve for actuating at least two operational areas and supplying the two areas with sufficient amounts of hydraulic medium is provided. The distributor, or switch, valve preferably comprises a flow regulator valve and a solenoid valve, which function so that the supply of hydraulic medium to the steering system always has priority, ensuring that the vehicle is steerable in any situation. When the steering system is operational, the supply of hydraulic medium to other operational areas, such as the clutch and transmission systems, is completely blocked by operation of the switch valve. If, however, the clutch and transmission systems should require hydraulic medium during operation of the steering system, the switch valve allows a small portion of hydraulic medium to be supplied to the clutch and transmission as well.