Prediction of a Turbocharger Performance Under Pulsating Flow by Construction of an Unsteady One-Dimensional Flow Analysis Model

In recent years, because of the energy crisis, improving the thermal efficiency of automobiles has become a very important issue. It is known that a pulsating flow generated by engine valves affects the performance and efficiency of the turbocharger adversely [1]. However, the turbocharger character...

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Bibliographic Details
Published in:International journal of fluid machinery and systems 2020, 13(4), 49, pp.743-749
Main Authors: Nakamura, Yohei, Chinen, Manato, Sakakibara, Masamichi, Abe, Yuudai, Miyagawa, Kazuyoshi
Format: Article
Language:English
Subjects:
기계공학
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Summary:In recent years, because of the energy crisis, improving the thermal efficiency of automobiles has become a very important issue. It is known that a pulsating flow generated by engine valves affects the performance and efficiency of the turbocharger adversely [1]. However, the turbocharger characteristics under pulsating flow have not been clarified to a satisfying degree yet, and no prediction method of turbocharger performance has been established yet. In this study, an unsteady one-dimensional flow model of a turbocharger is constructed by modeling the physics of aerodynamic loss and unsteady characteristics based on experiments and 3D-CFD. Furthermore, the characteristics of the turbocharger under pulsating flow were predicted using the built one-dimensional unsteady flow model. Moreover, this one-dimensional model was implemented in GT-Power which is a one-dimensional commercial code used by many automobile companies. KCI Citation Count: 0
ISSN:1882-9554
1882-9554
DOI:10.5293/IJFMS.2020.13.4.743