An experimental study of the effects of cylinder lubricating oils on the vibration characteristics of a two-stroke low-speed marine diesel engine

• Autorzy: Wu Gang , Jiang Guodong , Chen Changsheng , Jiang Guohe , Pu Xigang , Chen Biwen

Identyfikatory

DOI

10.2478/pomr-2023-0062

• Języki publikacji: EN

Abstrakty

EN

Two-stroke, low-speed diesel engines are widely used in large ships due to their good performance and fuel economy. However, there have been few studies of the effects of lubricating oils on the vibration of two-stroke, low-speed diesel engines. In this work, the effects of three different lubricating oils on the vibration characteristics of a low-speed engine are investigated, using the frequency domain, time-frequency domain, fast Fourier transform (FFT) and short-time Fourier transform (STFT) methods. The results show that non-invasive condition monitoring of the wear to a cylinder liner in a low-speed marine engine can be successfully achieved based on vibration signals. Both the FFT and STFT methods are capable of capturing information about combustion in the cylinder online in real time, and the STFT method also provides the ability to visualise the results with more comprehensive information. From the online condition monitoring of vibration signals, cylinder lubricants with medium viscosity and medium alkali content are found to have the best wear protection properties. This result is consistent with those of an elemental analysis of cylinder lubrication properties and an analysis of the data measured from a piston lifted from the cylinder after 300 h of engine operation.

Słowa kluczowe

EN

two-stroke; low-speed marine diesel engine; cylinder lubricating oils; vibration characteristic; condition monitoring

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2023
• Tom: nr 4
• Strony: 92--101
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Wu Gang

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

• https://orcid.org/0000-0002-6307-4993

autor

Jiang Guodong

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

• https://orcid.org/0000-0002-4510-2508

autor

Chen Changsheng

• Shanghai Marine Equipment Research Institute, Shanghai, China

autor

Jiang Guohe

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

autor

Pu Xigang

• Merchant Marine College, Shanghai Maritime University, Shanghai, China

autor

Chen Biwen

• Shanghai Marine Equipment Research Institute, Shanghai, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).