Patent · US Active

Hydraulic circuit for a dual clutch transmission

US7487864B2 · kind B2 · utility

6Cited by

3References

23Claims

0Family size

Assignee

GETRAG Getriebe- und Zahnradfabrik Hermann Hagen · DE

Inventors

Stefan Kohlhaas · Voerde, DE
Thomas Voss · Stuttgart, DE

Key dates

Filing date	Jan 2, 2007
Grant date	Feb 10, 2009
Priority date	—
Expiry date	Jan 2, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/1244
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydraulic circuit for a dual clutch transmission for motor vehicles comprises a first and a second clutch that can be hydraulically actuated and a first and a second pressure control valve for regulating the clutch pressure of the first and second clutches. In this circuit there is provided a single central valve, which in a first position connects the pressure control valves to the respective clutches and in a second position disengages the pressure control valves from the respective clutches.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.