Exhaust manifold design is one of the more challenging tasks for the engine engineer due to the harsh thermal and severe vibration environment. Extremely high exhaust gas temperatures and dynamic loading combine to subject the manifold to high cyclic stress when the material has reduced fatigue strength due to the high temperature. A long service life before a fatigue failure is the objective in exhaust manifold design. Accumulation of fatigue damage can occur from dynamic loading and thermal loading combined. Thermal mechanical fatigue (TMF) is a primary mechanism for accumulating fatigue damage. TMF typically occurs when a vehicle driving cycle has operating conditions that repeatedly change the exhaust gas temperature between hot and cold. Another way to experience temperature cycling is through splash quenching. Splash quenching was analyzed and found to rapidly accumulate fatigue damage. An experimental and analytical method is presented that quantified splash quenching and the impact on exhaust manifold durability. The number of quenches in the life of a vehicle is uncertain. It is therefore recommended that vehicle packages are designed in such a way that splash quenching of the exhaust manifold is avoided. This will maximize the durability of the hot exhaust components.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Exhaust Manifold Durability Subject to Splash Quenching


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    SAE 2015 World Congress & Exhibition ; 2015


    Published in:

    Publication date :

    2015-04-14


    Size :

    7 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Simulation and Test Research for Integrated Exhaust Manifold and Hot End Durability

    Zhang, Shemin / Chen, Tao / Wang, Weimin et al. | SAE Technical Papers | 2017


    Durability analysis of heavy duty engine exhaust manifold using CFD-FE coupling

    Eroglu,S. / Duman,I. / Guzel,A.H. et al. | Automotive engineering | 2016


    Durability Analysis of Heavy Duty Engine Exhaust Manifold Using CFD-FE Coupling

    Guzel, Ahmet Hamdi / Duman, Ipek / Yilmaz, Rifat et al. | SAE Technical Papers | 2016


    Simulation and Test Research for Integrated Exhaust Manifold and Hot End Durability

    Li, Xiangwang / Wang, Weimin / Zou, Xiongcai et al. | British Library Conference Proceedings | 2017


    Exhaust manifold

    EDWARD JAMES SMITH | European Patent Office | 2019

    Free access