Acoustic Method for Estimation of Marine Low-Speed Engine Turbocharger Parameters

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU140325" target="_blank" >RIV/00216305:26210/21:PU140325 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2077-1312/9/3/321/htm" target="_blank" >https://www.mdpi.com/2077-1312/9/3/321/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/jmse9030321" target="_blank" >10.3390/jmse9030321</a>

Result language

angličtina

Original language name

Acoustic Method for Estimation of Marine Low-Speed Engine Turbocharger Parameters

Original language description

The article presents the acoustic method of marine low-speed engine turbocharger parameter estimation under operating conditions when a prompt assessment of instantaneous turbocharger speed and rotor vibration level is required. The method lies in the analysis of the acoustic signal that is generated by the compressor of the turbocharger with the diesel engine running under load. The spectral analysis reveals that the compressor blades generate acoustic oscillations that are always present in the overall acoustic spectrum of the turbocharger regardless of its technical condition. The harmonic components corresponding to the blades can be detected in the spectrum using the limit method. The calculated instantaneous turbocharger speed makes it possible to analyze the main harmonic amplitude in the spectrum. The method presented in this paper helps eliminate discrete Fourier transform (DFT) spectral leakage so that the amplitude of the main harmonic can be estimated. Further analysis of the amplitude of the main harmonic allows for efficient estimation of the turbocharger rotor vibration level when in operation. The method can be practically applied by means of a smartphone or a computer that has the dedicated software installed. The proposed method lays the foundations for a permanent monitoring system of turbocharger speed and vibration in industrial and marine diesel engines.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20302 - Applied mechanics

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Marine Science and Engineering

ISSN

2077-1312

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

3

Country of publishing house

CH - SWITZERLAND

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000633775200001

EID of the result in the Scopus database

2-s2.0-85103183066