Patent · US Active

Clutch transmission

US9581177B2 · kind B2 · utility

4Cited by

1References

4Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Dietmar Schuller · Altmannstein, DE
Hans-Peter Fleischmann · Stammham, DE
Andreas Deimel · Ingolstadt, DE

Key dates

Filing date	Apr 30, 2012
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Sep 16, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/688
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A clutch transmission, in particular a dual clutch transmission, includes a hydraulic circuit for actuating and/or cooling the clutch transmission. The hydraulic circuit includes at least one cooler for cooling a hydraulic medium conveyed by at least one pump, wherein a bypass with a thermostatic bypass valve is associated with the cooler. The thermostatic bypass valve has hereby three switching positions, wherein it can be moved to a first switching position by a spring force, from the first switching position to the second switching position by a thermal element against the spring force and from the second switching position to a third switching position against the spring force by a pressure difference exceeding a predeterminable limit value.

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