Motivation

Development of a new brake concept for vehicles with alternative or hybridised drive systems, taking into account the changed usage behaviour and the additional braking freedom through recuperation. Conventional brake systems are designed on the basis of typical performance criteria. Due to an increased recuperation braking component of the electric motor and the resulting reduction of the average duration and frequency of friction brake application, their requirements change. As a consequence, the service brake system is not operated in the designed operating range. Brake disc corrosion and over-dimensioning of the conventional brake system are resulting negative factors which have a negative influence on the operating and manufacturing costs of the brake system.

Goal

Identification of the requirements of brake systems in electric vehicles and derivation of a brake concept with prototypical implementation.

Procedure

At the beginning a research on the technical status of the current wheel brake concepts is carried out. The performance requirements and common load cycles, which are the basis for the current brake design, are analysed and evaluated. Forecasts are made for the development trends of various vehicle concepts and usage behaviour. The differences in requirements for a new wheel brake concept are derived from this information. The new brake concept is conceptualised and implemented as a prototype.