Fatigue design methods based on accumulative damage calculations and coupled with offline simulated customer load collectives are commonly spread in the automotive industry, particularly to dimension gearboxes. These standardized customer load collectives are usually generated independently of driver styles or environmental conditions, so that the representation is unique. However, despite their ability to cover most use cases and to ensure the required minimal service life expectancy for the designed transmission, it is established that the gearboxes developed with the results of such processes are over-designed for a big part of the customers. Because of more and more drastic emission norms and the necessity for OEMs to stay competitive, the aspects cost and lightweight design are nowadays highly focused. The subjacent goal is to design as light and as low-cost as possible while guaranteeing the same performance as previously. In this context, one further approach to introduce cost-efficient lightweight design in transmission engineering process is proposed here. This approach is predicated on the implementation in series cars of a real-time and online lifetime monitoring system able to estimate the remaining service life of mechanical components - like gearwheels - continuously and under operating conditions. This study is based on a multi-body model developed on Simulink for two standard vehicles, one equipped with a manual transmission and the other with a dual clutch transmission. The drivetrain inputs (gas & brake pedals and gear selection) are calculated by a driver model based on the combination of feedforward and feedback loops which inputs are a vehicle speed target (driving cycle) and the calculated current vehicle speed.


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    Titel :

    Real-time and online lifetime monitoring of automotive transmissions. Determination of the remaining lifetime of transmission components with the aid of a torque measure


    Beteiligte:
    Foulard, S. (Autor:in) / Rinderknecht, S. (Autor:in) / Ichchou, M. (Autor:in) / Perret-Liaudet, J. (Autor:in)


    Erscheinungsdatum :

    2013


    Format / Umfang :

    12 Seiten, Bilder, 17 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch