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Modeling of Adjustable Muffler in the Exhaust System of an Internal Combustion Engine

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Research Methods and Solutions to Current Transport Problems (ISCT21 2019)

Part of the book series: Advances in Intelligent Systems and Computing ((AISC,volume 1032))

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Abstract

The article presents model studies of the exhaust system of an internal combustion engine based on own concept of a regulated reactive muffler. A structure with a regulated input in the expansion chamber was proposed and the influence of adjustment degrees on the effectiveness of acoustic energy attenuation was determined in the simulation research process. In the modeling process of the mentioned structure, the basic acoustic properties of the system were mapped and the calculation process was carried out for selected real exploiting conditions of the internal combustion engine. For the mapping of real non-linear phenomena during exhaust gases flow, the boundary element method and volumetric flows were used as well as the specialized calculation package CFD (Computer Fluid Dynamics)-AVL AST. Comparisons of the test results of various degrees of regulation allowed determining the suitability of the proposed solution and evaluating the benefits in shaping the acoustic energy by determining the transmission loss.

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Author information

Authors and Affiliations

  1. Warsaw University of Technology, Koszykowa 75, 00-662, Warsaw, Poland

    Andrzej Gagorowski

Authors
  1. Andrzej Gagorowski
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Correspondence to Andrzej Gagorowski .

Editor information

Editors and Affiliations

  1. Faculty of Transport, Warsaw University of Technology, Warsaw, Poland

    Mirosław Siergiejczyk

  2. Faculty of Transport, Warsaw University of Technology, Warsaw, Poland

    Karolina Krzykowska

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Gagorowski, A. (2020). Modeling of Adjustable Muffler in the Exhaust System of an Internal Combustion Engine. In: Siergiejczyk, M., Krzykowska, K. (eds) Research Methods and Solutions to Current Transport Problems. ISCT21 2019. Advances in Intelligent Systems and Computing, vol 1032. Springer, Cham. https://doi.org/10.1007/978-3-030-27687-4_13

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