Patent · US Active

Hydraulic control for a dual clutch transmission

US7707911B2 · kind B2 · utility

4Cited by

5References

15Claims

0Family size

Assignee

LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

Marco Grethel · Frebershausen, DE
Manfred Homm · Bühl, DE
Eric Mueller · Zürich, CH
Martin Staudinger · Ettlingen, DE

Key dates

Filing date	May 8, 2009
Grant date	May 4, 2010
Priority date	—
Expiry date	May 8, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19149
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A dual clutch transmission which has a first clutch, actuated by a first hydraulic cylinder, a second clutch, actuated by a second hydraulic cylinder, shift devices for shifting gears, which are actuated by respective hydraulically operated cylinders, and a hydraulic energy source for supplying the hydraulic cylinders and the hydraulically operated cylinders with hydraulic energy. The hydraulic energy source has a first pump, a second pump and an electric drive driving the second pump.

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