A modelling study is presented in this paper, whose objective is to obtain design criteria for optimum layouts and dimensions of exhaust manifolds in automotive engines. The first step has been the characterisation of the pulsating flow phenomena in the exhaust manifold, focusing on the pressure wave propagation process and on the interaction between cylinders across the manifold. Two relevant phenomena have been studied: the reflection of under-pressure pulses at pipe junctions and open ends, and the interference between exhaust processes of different cylinders. These phenomena have been characterised respectively by non-dimensional parameters, related to the layout and dimensions of the manifold. A parametric modelling study has been performed in order to evaluate the effects of the manifold dimensions on the engine performance. The work has been focused on a four-cylinder engine with a four-branch manifold. Significant results have been obtained from the research and some are clear design criteria, for the manifold dimensions, in terms of key values of the described non-dimensional parameters.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Pre-design Criteria for Exhaust Manifolds in I.C. Automotive Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Reyes, E. (author) / Benajes, J. (author) / Serrano, J. R. (author) / Bermudez, V. (author)

    Conference:

    International Congress & Exposition ; 1998



    Publication date :

    1998-02-23




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Pre-design criteria for exhaust manifolds in I.C. automotive engines

    Benajes,J. / Reyes,E. / Bermudez,V. et al. | Automotive engineering | 1998


    Design of stainless steel automotive exhaust manifolds

    Santacreu, P.O. / Cleizergues, O. / Simon, C. et al. | Tema Archive | 2004


    Design of Stainless Steel Automotive Exhaust Manifolds

    SIMON, C. / CLEIZERGUES, O. / DUROUX, P. et al. | SAE | 2003


    Exhaust manifolds for outboard marine engines

    LANGENFELD GREGG D / HABECK STEVEN W / BROMAN JEFFREY J et al. | European Patent Office | 2017

    Free access

    Ryan built exhaust manifolds for radial aircraft engines

    Moore, E.A. | Engineering Index Backfile | 1942