Zf Friedrichshafen Ag

Thomas Aisenpreis

Horst Leichsenring

Berron Hairston

Jochen Birkle

A hydraulic circuit arrangement for operating a hydrodynamic torque converter () with a converter bridging clutch (). The circuit arrangement comprises a hydraulic switching unit () having at least one valve for controlling an inflow flow and a return flow of oil to the converter () and the converter bridging clutch (), an oil cooler (), a first line () for acting upon the converter bridging clutch () with an engagement pressure (P) and a second line () for acting upon the converter bridging clutch () with a disengagement pressure (P). The circuit arrangement comprises a bypass line () which is connected directly with the oil cooler () so as to bypass the hydraulic switching unit ().

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Friedrichshafen, Germany

Thomas Aisenpreis