Zf Friedrichshafen Ag

Gerhard Führer

Gerhard Höring

Hermann Lanz

Roland Stauber

Kurt Osterloff

A transmission () having a transmission housing () having a region in which gear wheels () rotate and a heat exchanger () which absorbs the heat generated in the transmission (). This heat is transferred to a transmission lubricant and released to a coolant to transport the heat away from the transmission (). A recess () is provided, in the transmission housing () outside of the region in which the gearwheels () rotate, through which transmission lubricant flows and in which the heat exchanger () is arranged. The heat exchanger () has a bypass valve () which enables the heat exchanger () to be bypassed starting at a predefined low or excess pressure.

Heat exchanger with integrated bypass valve

A gear shifting system for idler wheels () comprising sliding sleeves (), which are connected torsion-resistant with a main shaft () and can be connected form-locking with an idler wheel () to be shifted via axial displacement. Actuation of the respective sliding sleeve () is provided through at least one adjusting unit (), which selects an actuator such that a shifting actuation of the respective sliding sleeve () is possible.

Gearshift device

An arrangement of the intermediate gear for a reverse gear () is proposed for a transmission with a drive shaft and an output shaft () arranged coaxially in relation to it and with one additional intermediate shaft () arranged parallel to the drive and output shafts () for a power take-off. The intermediate gear for the reverse gear () is driven by a shaft () and drives the output shaft (), in which the intermediate gear for the reverse gear () is arranged above an imaginary plane (A) extended through the axes of the driving shaft () and the output shaft () and, with a horizontal orientation of plane (A), the driving shaft () is located to the right of the output shaft () in the direction of travel.

Growing community of inventors

Friedrichshafen, Germany

Gerhard Führer