Audi Ag

Moritz Lux

Lars Wetterau

Peter Suess

Korbinian Weber

Maximilian Schröder

Vladimir Chernogorski

Markus Schaefer

Markus SCHÄFER

A drive apparatus for a vehicle having an electric machine whose rotor shaft is constructed as a hollow shaft having an internal tooth arrangement. A gear mechanism drive shaft, which has an external tooth arrangement, is inserted coaxially relative to the hollow shaft into the hollow shaft, to form a torque-transmitting spline. The rotor shaft with a rotor shaft rotary bearing being interposed is guided outward through a bearing opening of an electric machine housing, and the gear mechanism drive shaft has a centering seat which is in abutment with the internal circumference of the rotor shaft with a tight clearance fit. The gear mechanism drive shaft is subjected to bending (D) during travel operation as a result of radially active operating forces (F). To reduce the bending stress (D), the centering seat of the gear mechanism drive shaft is arranged without an axial offset with respect to the rotor shaft rotary bearing, in axial alignment relative to the rotor shaft rotary bearing.

Drive apparatus for a vehicle

A rotor for an electric machine, comprising a rotor shaft and a laminated core arranged on it, comprising multiple metal plates arranged in axial succession and lying against each other, as well as at least one coolant duct running through the laminated core, wherein the laminated core is axially clamped by at least one clamping means, wherein the clamping means shoved onto the rotor shaft comprises at least one axially braced spring element and at least one tolerance compensation disk.

Axially clamped rotor with length tolerance compensation

An electric machine has a stator and a rotor arranged on a hollow shaft and able to turn relative to the stator about an axis of rotation, wherein the hollow shaft comprises, in a shaft casing, at least one shaft exit opening for coolant supplied to a shaft interior space of the hollow shaft. A cover element is arranged next to the rotor on the hollow shaft, in which is formed a fluid duct comprising a fluid duct inlet and a fluid duct outlet, wherein the fluid duct inlet overlaps with the shaft exit opening and the fluid duct outlet overlaps with a coolant duct inlet of a coolant duct reaching through the rotor in the axial direction relative to the axis of rotation, having a coolant duct outlet on its side opposite the coolant duct inlet, through which the coolant emerges from the rotor.

Electric machine

Growing community of inventors

Munich, Germany

Moritz Lux