Simulation of durability of cylinder liners of an internal combustion engine under vibration cavitation

Pogodaev, L. I.; Tret'yakov, D. V.; Valishin, A. G.; Matveevskii, O. O.

doi:10.3103/s105261880802009x

Cited by 10 publications

(6 citation statements)

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“…Vibration can be generated due to external causes, such as seismicity, but also because of internal reasons such as cavitation. Combating corrosion and vibration generated by cavitation of liners remains important because the life of liners with regard to cavitation erosion is approximately four times shorter than that with regard to the cylinder face wear [38]. This is not only of great importance for water supply systems but also in the field of nuclear power plants, where ambient vibration is a common danger.…”

Section: Responses To Vibrationmentioning

confidence: 99%

A Comparative Review of the Current Methods of Analysis and Design of Stiffened and Unstiffened Steel Liners

Martin-Candilejo

Valdeolivas²,

Granados

et al. 2022

Applied Sciences

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There are significant levels of concern about both the safety assessment and financial evaluation of the whole hydropower system, especially at early project stages. In addition, there is a variety of reliable and accurate methods for analysis, design, and optimization of steel pressure liners in hydropower plants. Several countries have developed specific regulations and codes for the design, installation, and safety evaluation of under-pressure piping, as well as estimates of the potential risks associated with failure. This paper reviews the current methodologies and codes available for design and safety assessment of either unstiffened or stiffened pressure steel liners in hydropower plants. After examining the main guidelines and practical conclusions drawn from recent research in the field of liners subjected to either internal or external pressure, this article then discusses the relevant regulations and codes. The scope of this work is to summarize the advantages, disadvantages, and main characteristics of the existing design criteria, analysis methods, and other issues related to steel liners. Afterwards, this paper compares the main reliable formulations and modelling techniques, even the most recent or sophisticated ones. Lastly, we draw some conclusions regarding their accuracy and scope of applicability.

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Section: Responses To Vibrationmentioning

confidence: 99%

A Comparative Review of the Current Methods of Analysis and Design of Stiffened and Unstiffened Steel Liners

Martin-Candilejo

Valdeolivas²,

Granados

et al. 2022

Applied Sciences

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“…The diesel engines of large output are generally water-cooled four-stroke engines with continuous operation for a long time [5]. In such conditions, cavitation is likely to occur in the water coolant around cylinders, resulting in local concentrated honeycombed pits, especially on the thrust side and antithrust side of liners; this phenomenon is called liner cavitation erosion [6,7]. Cavitation also happens on the other side of liners at the lubricant oil film between piston rings and cylinder liner during the high compression stroke [8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Liner Cavitation Potential through Piston Slap and BEM Acoustics Coupled Analysis

Wang

Zhao

et al. 2022

Mathematics

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Internal combustion engines take up the major position in the power facility market and still encounter some challenges; one key issue is liner cavitation erosion. The impact vibration between piston and cylinder generates pressure fluctuation on the wet liner surface and leads to the occurrence of cavitation in the case that coolant pressure falls below its vapor pressure. Piston slap methodology has been improved by considering the dynamic characteristics of the piston. Water coolant passage acoustic features were investigated and the Helmholtz effect between cylinders was confirmed. In order to address the cavitation erosion potential of the engine cylinder, acoustic pressure in the cooling water passage was investigated by boundary element method analysis with the acceleration of the cylinder liner which was obtained from the piston slap program. This study revealed that a certain acoustic mode of the cooling water passage had a dominant effect on the amplitude of water coolant dynamic pressure induced by liner vibration. Measures of eliminating the acoustic mode are believed to be able to suspend pressure fluctuation and furthermore the potential of cavitation.

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“…The degree and size of liner erosion are due to various reasons such as liner vibration, coolant condition and liner materials [5][6][7][8][9]. Cavitation erosion on the outside of liners is more rapid than the progressive wear of inside surface by piston ring friction [10]. When a hole completely penetrating the liner wall has developed, the mixture of cooling water and lubricating oil in the combustion chamber causes failure of engines [11].…”

Section: Introductionmentioning

confidence: 99%

“…Thus liner cavitation erosion often seriously reduces the reliability and life expectancy of internal combustion engines and brings expensive down time to change cylinder liners. Cavitation erosion is still far from solved because of the lack of reliable models of cavitation erosion damage [12]. Former studies revealed the relationship between liner vibration and bubble formation [9,13,14].…”

Section: Introductionmentioning

confidence: 99%

Study on the coolant pressure of internal combustion engines through vibro-acoustical analysis of a real cylinder block structure

Wang

Zhang

Chen

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Liner cavitation is caused by water pressure fluctuation in the water coolant passage of internal combustion engines. The high-speed re-entrant jet and shock wave following the implosion of cavitation bubbles cause cavitation erosion on the wet cylinder liner surface. The present work proposes a numerical method to predict the water pressure fluctuation of engine systems considering acoustic features of water coolant passage. The effect of the geometry modification of water coolant passage is evaluated. The water coolant passage acoustic field is introduced into the engine system containing a crankcase, a gear case, a cylinder head and an injection pump. The water coolant pressure fluctuation and engine vibration are calculated for engine systems with different exciting forces. The cross-sectional pressure distribution of water coolant passage and the longitudinal pressure distribution along thrust side of liner at top dead center are discussed. It is revealed that the pressure distribution is influenced by certain acoustic modes. The pressure fluctuates strongly at the top dead center, which is conductive to bubble formation and explosion.

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Simulation of durability of cylinder liners of an internal combustion engine under vibration cavitation

Cited by 10 publications

References 0 publications

A Comparative Review of the Current Methods of Analysis and Design of Stiffened and Unstiffened Steel Liners

A Comparative Review of the Current Methods of Analysis and Design of Stiffened and Unstiffened Steel Liners

Evaluation of Liner Cavitation Potential through Piston Slap and BEM Acoustics Coupled Analysis

Study on the coolant pressure of internal combustion engines through vibro-acoustical analysis of a real cylinder block structure

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