A significant portion of fuel consumption of trucks is used to overcome aerodynamic drag and wind resistance. Many treatments have been applied to the front of truck surfaces and underneath trailers to improve vehicle aerodynamics. Aerodynamic drag is proportional to the square of velocity, and the power needed to overcome drag is proportional to the cube of velocity. This means that there is a very strong relationship between the speed that a vehicle is travelling, and the proportion of the fuel used to overcome drag. Tail fairings have been applied to the back of trailers to reduce drag. They are generally 2 to 3 feet long and are set at a converging angle in the range of 12 to 15 degrees. This angle creates issues in that the angled fairings cover upper indicator lights and get in the way of rear doors and require complex support structures. Many of theses systems deploy with the use of powered activation devices which adds to cost and complexity. This invention teaches the use of openings such as perforations and slots in the rear fairings so that they that do not necessarily converge but remain parallel to the side of the object being steam-lined. Air is metered through the openings to improve laminar flow, reduce air flow , turbulence and pressures over rearmost edges.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    METHOD AND APPARATUS TO DIMINISH AERODYNAMIC DRAG ON TRUCKS, TRAILERS AND OTHER MOVING VEHICLES


    Weitere Titelangaben:

    PROCEDE ET APPAREIL POUR DIMINUER LA TRAINEE AERODYNAMIQUE EXERCEE SUR DES CAMIONS, DES REMORQUES ET AUTRES VEHICULES MOBILES


    Erscheinungsdatum :

    07.02.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



    Aerodynamic drag reduction system for trucks, cargo trailers and train boxcars

    HALVERSON RICK / DENISON CHARLES W | Europäisches Patentamt | 2019

    Freier Zugriff

    APPARATUS FOR REDUCING AERODYNAMIC DRAG ON TRACTOR-TRAILERS

    PRAKASH SHAURYA / RANGHRAJAN KAUSHIK / ZEZINKA ZACHARY et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    Apparatus and method for reducing aerodynamic drag on tractor-trailers

    PRAKASH SHAURYA / RANGHARAJAN KAUSHIK KRISHNA / ZEZINKA ZACHARY et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    APPARATUS AND METHOD FOR REDUCING AERODYNAMIC DRAG ON TRACTOR-TRAILERS

    PRAKASH SHAURYA / RANGHARAJAN KAUSHIK KRISHNA / ZEZINKA ZACHARY et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    Trucks -- Trailers -- Demountable bodies

    Hobart, C.G. | Engineering Index Backfile | 1928