Lead free bronze substrate associated with a lead free electroplated coating has been the standard bearing material technology for medium size Diesel engines. However the increasing engine demands are driving this technology to the limit. With the increase of Peak Cylinder Pressure (PCP) to improve power density and reduce CO2 emissions, the bearings are subjected to higher loads which usually reduce their durability. The new operating conditions are more prone to wear and eventually scuffing occurrences. Therefore materials with higher scuffing and wear resistance without a significant cost increase are demanded.To meet the requirements of highly loaded Medium Duty Diesel (MDD) applications, a lead free material based on a high resistant bronze substrate associated with a polymeric coating was developed. The polymer is sprayed onto the substrate and cured on a high temperature to provide performance improvement and adequate thickness control.The solution brought the necessary wear and scuffing resistance with increased Load Carrying Capacity (LCC) when compared to the current electroplated lead free material. Other bearing surface features - e.g. conformability - were not compromised by adopting this technology.This paper will demonstrate the results of bench and engine tests emphasizing the distinct advantages of this technology.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Polymeric Coated Lead Free Bronze Bearings for High Durability in Medium Duty Diesel Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Silva, Adalto (Autor:in) / Ferreira, Matheus (Autor:in) / Praça, Mário (Autor:in) / Costa, Sandra (Autor:in)

    Kongress:

    23rd SAE Brasil International Congress and Display ; 2014



    Erscheinungsdatum :

    2014-09-30




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    New Polymeric Coating on Sputtered Bearings for Heavy Duty Diesel Engines

    Praca, Mario S. / Ferreira, Matheus / Mian, Omar et al. | SAE Technical Papers | 2013


    HIGH LEAD COPPER-LEAD BEARINGS FOR SLOW SPEED DIESEL ENGINES

    WILLI, ALBERT | SAE Technical Papers | 1952



    Bearings for HEAVY-DUTY Automotive Engines

    WILLI, ALBERT B. | SAE Technical Papers | 1942