Hydraulic system for providing pressures and volumetric...

Details Hydraulic system for providing pressures and volumetric... Hydraulic system for providing pressures and volumetric...

2008-07-08

2008-07-08

Bonck, Rodney H (Department: 3681)

192 clutches and power-stop control

Transmission control and clutch control

Common control

C192S113350

Reexamination Certificate

active

07395908

ABSTRACT:
The invention relates to a hydraulic system (1) for providing pressures and volumetric flows in a dual clutch transmission, in particular for providing a first volumetric flow for cooling and lubricating a first clutch (2) and for providing a second volumetric flow for cooling and lubricating a second clutch (3). The hydraulic system is distinguished by the fact that at least one switching valve (4), which in a first position guides a lubricating flow onto the first clutch (2) and a cooling flow onto the second clutch (3) and in a second position guides the lubricating flow onto the second clutch (3) and the cooling flow onto the first clutch (2), is connected upstream of the first clutch (2) and the second clutch (3). The cooling flow is preferably variable.

REFERENCES:
patent: 3823801 (1974-07-01), Arnold
patent: 5669479 (1997-09-01), Matsufuji
patent: 2002/0002878 (2002-01-01), Petrzik
patent: 2004/0112171 (2004-06-01), Kuhstrebe et al.
patent: 2006/0054442 (2006-03-01), Hegerath et al.
patent: 103 06 895 (2003-02-01), None
patent: 1 413 803 (2004-04-01), None
patent: 01188723 (1989-07-01), None
patent: WO03/040580 (2003-05-01), None

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