Potential of CuS and CuO nanoparticles for friction reduction in piston ring–liner contact

IF 1.6 Q4 MATERIALS SCIENCE, COATINGS & FILMS

Tribology - Materials, Surfaces & Interfaces Pub Date : 2021-01-18 DOI:10.1080/17515831.2020.1871244

A. Jain, Manoj Kumar, G. D. Thakre

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引用次数: 1

Abstract

ABSTRACT An experimental study on the use of Cu nanofluids as engine oils for reduction of friction in piston ring–liner contact is presented. The Cu nanofluids were prepared using CuS and CuO nanoparticles and blending them in 0.1–6% concentration by weight in the commercial engine oils. The Cu nanoparticles were synthesised and characterised after mixing with the lubricant for their physico-chemical characteristics. The experiments were performed on a reciprocating tribo-tester using actual piston rings and the liners as test specimens. Experiments were performed to investigate the effect of nanoparticle concentration with the change of contact loads and reciprocating frequency on the coefficient of friction. The study reveals that the Cu nanoparticles blended in the engine lubricating oils can significantly reduce friction between piston ring–liner contact, desirable for fuel economy improvement. The Cu nanoparticles are compatible with base lubricants and result in significant friction reduction. The CuS nanoparticles performed significantly better than the CuO nanoparticles. GRAPHICAL ABSTRACT

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CuS和CuO纳米颗粒在活塞环-缸套接触中降低摩擦的潜力

摘要:研究了Cu纳米流体作为发动机润滑油用于减少活塞环-衬套接触摩擦的实验研究。将Cu和CuO纳米颗粒以0.1% - 6%的质量浓度掺入商用机油中，制备了Cu纳米流体。将铜纳米颗粒与润滑剂混合后合成并表征其物理化学特性。实验在往复式摩擦试验机上进行，以实际活塞环和衬套为试样。实验研究了纳米颗粒浓度随接触载荷和往复频率的变化对摩擦系数的影响。研究表明，在发动机润滑油中掺入Cu纳米颗粒可以显著降低活塞环与衬套之间的摩擦，有利于提高燃油经济性。铜纳米颗粒与基础润滑剂兼容，可以显著减少摩擦。cu纳米粒子的性能明显优于CuO纳米粒子。图形抽象

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来源期刊

Tribology - Materials, Surfaces & Interfaces MATERIALS SCIENCE, COATINGS & FILMS-

CiteScore

2.80

自引率

0.00%

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