Properties and Limitations of an Oxide Coated Aluminum Brake Rotor 2018-01-1877
The electrification of the powertrain and the thereto related recuperation of the electric engine saves the energy in the battery and thus reduces the thermally dissipated brake energy, which leads to lower brake rotor temperatures. These new conditions enable to reconsider brake disc concepts. Including lightweight design in heavy BEVs and the increasingly relaint corrosion resistance of brake rotors, Aluminium is a promising approach for new brake disc concepts.
In the past, Aluminium brake rotor concepts have already been deployed. For instance Metal-Matrix Composite concepts in the Lotus Elise S1 and on the rear axle of the Volvo V40.
The presented concept is a different approach and separates the friction system from the bulk Aluminium brake disc, which is achieved by coating of the friction rings.
In this work, fundamental studies on a brake dynamometer were conducted and supplemented by materials investigation to judge the technical practicability of the concept.
Florian Gulden, Sebastian Gramstat, Anton Stich, Heinz Werner Hoppel, Ulrich Tetzlaff
Universität Erlangen-Nürnberg (FAU), Audi AG, Technische Hochschule Ingolstadt