Zf Friedrichshafen Ag

Dirk Winkler

Thilo Schmidt

Markus Herrmann

Rainer Grundler

Gerhard Hermann Martin

Bernhard Sauter

Dietmar Gehring

Valentine Vincent

Ahmed Mouhcine

A transmission (G) for a motor vehicle includes a pump (P), an oil sump (S), a hydraulic control unit (HCU), a gear set (RS) for providing different transmission ratios between an input shaft (GW) and an output shaft (GW) of the transmission (G), and a cavity (HY) arranged on an input side, in which a torque converter (TC) and/or an electric machine (EM) are accommodated. The cavity (HY) is connected to the oil sump (S) via a gap (C) configured for a passive return of oil out of the cavity (HY) into the oil sump (S). In order to reduce the gap (C), a separating element (T) is configured for making it difficult for oil to flow out of the oil sump (S) to the cavity (HY). A drive train comprising such a transmission (G) is also provided.

Transmission and drive train for a motor vehicle

A greaser for a transmission includes a shaft () having an axial bore () and a plurality of axially spaced radial bores (). Each of at least one tube () is inserted into a respective one of the axially spaced radial bores () and extends radially inwardly into the axial bore () beyond a circumferential surface () of the axial bore () that is adjacent the respective one of the axially spaced radial bores (). Each of the at least one tube () includes a slot () at a tube end () facing a central axis () of the shaft (). The slot () of each of the at least one tube () extends along a central axis () of the respective tube () into an interior space of the axial bore ().

Lubricating device for a transmission, and transmission comprising said lubricating device

A drag torque reduction device for an automatic transmission includes a hydraulic controller with a radiator. In one embodiment, the drag torque reduction device also includes a parallel connection of a pressure relief valve, a constant aperture and a temperature-dependent, switchable aperture positioned upstream of the radiator. In another embodiment, the drag torque reduction device includes an overflow cooling oil diversion with a temperature-dependent, switchable aperture and a pressure relief valve that is positioned upstream of the radiator.

Device reducing drag loss in an automatic transmission

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Kressbronn, Germany

Dirk Winkler