In the paper a coupled Multi-Body and FEM-BEM methodology used to predict the noise radiated by a turbocharged 4-cylinder diesel engine prototype is described. A Multi-Body Dynamic Simulation (MBDS) of the engine has been carried out, simulating an engine speed sweep from 1500 to 4000 rpm, in order to determine the excitation force of the powertrain, and in particular to estimate the forces acting on the cylinder block. Thanks to the Multi-Body approach, the dynamics of the engine powertrain have been described taking into account both the effects of the burnt gas pressure during the combustion process and the inertia forces of the moving parts. Moreover to assess the real engine operating behaviour, both the crank and the block have been considered as flexible bodies. Afterwards, the cylinder block excitations, in terms of Modal Participation Factors, have been used to evaluate the engine radiated noise with the well-know MATV methodology, at a distance of one meter from the engine according to the ISO 3744 directives. The dynamics of the engine powertrain and its vibro-acoustic behaviour have been described using LMS Virtual.Lab tools.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Noise Prediction of a Multi-Cylinder Engine Prototype Using Multi-Body Dynamic Simulation


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    10th International Conference on Engines & Vehicles ; 2011



    Publication date :

    2011-09-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Flexible Multi-body Dynamic Analysis of Multi-Cylinder Engine Valve Train

    Prabakar, R. S. / Mangalaramanan, S. P. | SAE Technical Papers | 2011


    Brake Noise Prediction Using Altair Multi-Body Simulation

    Leila, Felipe Moretti / Sundaresh, Keshav | SAE Technical Papers | 2015


    Prototype 18-cylinder engine development

    Hedberg,S. / Hedemora,SE / Kockum,SE | Automotive engineering | 1990


    Driveline Boom Interior Noise Prediction Based on Multi Body Simulation

    Eisele, Georg / Govindswamy, Kiran / Wellmann, Thomas | SAE Technical Papers | 2011


    Driveline boom interior noise prediction based on multi body simulation

    Wellmann,T. / Govindswamy,K. / Eisele,G. et al. | Automotive engineering | 2011