Tribological characteristics of contaminated lubricating oil in the ammonia engine

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-09-17 DOI:10.1016/j.wear.2025.206347

Xing Xu , Zetong Wang , Kun Zou , Yuxuan Sheng , Chang Ge , Baofeng Zhang , Xuan Ma , Xiqun Lu

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引用次数: 0

Abstract

As an alternative fuel with zero carbon emissions, ammonia has great potential for development in the shipping industry. Several initiatives and studies are underway to bring ammonia engines to the market soon. In this study, the tribological characteristics of lubricant used in ammonia fuel engines after contamination were investigated. The piston ring and cylinder liner were used as friction pairs, with cast iron as the base material and the piston rings coated with a chromium-based ceramic composite. The effect of ammonia was considered by introducing the combustion products of ammonia in an artificial engine oil modification process and employing these lubricants during the tribotests. The results show that the artificially altered oil will not only cause corrosion wear on the surface, but also destroy the anti-wear performance of the lubricant additives, resulting in increased surface wear. The outcomes of the work are anticipated to offer beneficial insights of lubricating oil uses in ammonia engines, particularly in scenarios where ammonia contamination poses a concern.

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氨发动机污染润滑油的摩擦学特性

氨作为一种零碳排放的替代燃料，在航运业中具有很大的发展潜力。为了尽快将氨发动机推向市场，一些倡议和研究正在进行中。对氨燃料发动机用润滑油污染后的摩擦学特性进行了研究。将活塞环和缸套作为摩擦副，以铸铁为基材，活塞环涂以铬基陶瓷复合材料。通过在人工机油改性过程中引入氨的燃烧产物，并在摩擦试验中使用这些润滑油，考虑了氨的影响。结果表明，人工改性后的润滑油不仅会对表面造成腐蚀磨损，而且会破坏润滑油添加剂的抗磨性能，导致表面磨损增加。预计这项工作的结果将为氨发动机的润滑油使用提供有益的见解，特别是在氨污染引起关注的情况下。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.