Cavitation failure analysis and mechanism study of the wet cylinder liner in heavy-duty diesel engines

IF 4.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Engineering Failure Analysis Pub Date : 2025-03-20 DOI:10.1016/j.engfailanal.2025.109547

Dong Liu , Lintao Li , Guoxing Li , Nannan Sun , Guixiang Zhu , Tie Wang , Fengshou Gu

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引用次数: 0

Abstract

Cavitation failure of the cylinder liner is one of the main reliability problems in heavy-duty diesel engines. It can shorten engine lifespan, increase maintenance costs, and even lead to catastrophic failures. This paper conducts a systematic study of cylinder liner cavitation by integrating microstructure analysis, cavitation process observation, and numerical simulation. The morphology and chemical composition of the damaged regions are analysed at both macro and micro levels, providing comprehensive insights into the cavitation erosion behaviour and damage mechanisms. The vibration and pressure fluctuation characteristics of the cylinder liner-water jacket system are investigated by a structure-acoustic coupling model. The predicted cavitation risk regions of the cylinder liner are in good agreement with the actual cavitation erosion regions. Cavitation damage is primarily concentrated within a 26 mm vertical zone adjacent to the lower seal of the cylinder liner. The minimum pressure in the water jacket occurs at 373.3 °CA. When the engine speed exceeds 1400 rpm, the risk of cavitation arises and progressively intensifies with increasing speed and load. The results enrich the theoretical system of cavitation erosion in cylinder liners and provide a valuable reference for the cavitation prediction and mitigation.

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来源期刊

Engineering Failure Analysis 工程技术-材料科学：表征与测试

CiteScore

7.70

自引率

20.00%

发文量

956

审稿时长

47 days

期刊介绍： Engineering Failure Analysis publishes research papers describing the analysis of engineering failures and related studies. Papers relating to the structure, properties and behaviour of engineering materials are encouraged, particularly those which also involve the detailed application of materials parameters to problems in engineering structures, components and design. In addition to the area of materials engineering, the interacting fields of mechanical, manufacturing, aeronautical, civil, chemical, corrosion and design engineering are considered relevant. Activity should be directed at analysing engineering failures and carrying out research to help reduce the incidences of failures and to extend the operating horizons of engineering materials. Emphasis is placed on the mechanical properties of materials and their behaviour when influenced by structure, process and environment. Metallic, polymeric, ceramic and natural materials are all included and the application of these materials to real engineering situations should be emphasised. The use of a case-study based approach is also encouraged. Engineering Failure Analysis provides essential reference material and critical feedback into the design process thereby contributing to the prevention of engineering failures in the future. All submissions will be subject to peer review from leading experts in the field.