Automotive energy efficient systems stand in the area of conflict between the reduction of fuel consumption, legal regulations, technical solutions, costs and the customer's quality rating. In addition, the below considered exterior light components have to fulfill high design requirements. Automotive exterior lighting systems that are based on classical lamps require an average electrical power of 130W. Among light functions that have the highest weighted power-consumption (75 % of the total average consumption) are low beam, daytime running light, tail light and stop light. Substituting classical lamps by highly efficient LED in these four light functions, the weighted average consumption can be reduced by nearly 100 W. That is equivalent to approximately 0.1 1/100km or respectively 3 g CO2 per kilometer. Due to the possible negative influence on cost and design issues, a reduction of electrical power used by light functions can not only be achieved by efficient LED systems on the hardware side. Thus, efficient usage strategies should also be implemented. With modern automotive surrounding field sensors, light functions can be controlled adaptively and energetically optimized by demand. Especially large growing urban areas with an increasing volume of traffic offer a high potential for saving energy. In nose-to-tail traffic in an area illuminated by road lighting, for example the low beam can be reduced near to the legal minimum without influencing the driver's perception negatively. Conception and evaluation of such new eco light functions are enabled by a special night driving simulator. With this simulator, every function and light distribution can be implemented easily without constructing a hardware headlamp model. Moreover, a driving simulator allows evaluations and test series with completely reproducible test drive situations. This article covers beside simulation tools, which help to evaluate the new light functions, potentials, procedure and solution approaches to an energy-optimized exterior car lighting. Especially the customers driving range has to be optimized, wherefore it shall be focused on the research of urban control strategies. The best solution of an efficient lighting, regarding the parameters design, costs, functionality and customer value, will be a combination of consciously applied LED lighting systems and adaptive control strategies where applicable. The selection of light sources, optics, design and control strategies will depend highly on the type of car and its characteristic use-cases. With modern Car-2-X-systems new additional possibilities, like a demand orientated coordination with street lighting and other road users will be created.


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    Titel :

    Development of energy efficient car lighting systems and adaptive control strategies


    Beteiligte:
    Weber, Stefan (Autor:in)


    Erscheinungsdatum :

    2011


    Format / Umfang :

    11 Seiten, 9 Bilder, 11 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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