Effects of Nano-Lubricants on Power and CO Emission of a Diesel Engine: An Experimental Investigation

Year 2019, , 251 - 256, 30.09.2019

Ali Can Yılmaz

https://doi.org/10.18466/cbayarfbe.453763

Cited By: 1

Abstract

In this study, it was aimed to investigate the effects of copper (II)
oxide (CuO), copper zinc iron oxide (CuZnFe₂O₄) and
copper iron oxide (CuFe₂O₄) nanoparticle additives in
synthetic diesel engine oil (5W-40) at the fraction of 0.08 wt% on friction and
wear in piston ring-cylinder liner mechanism of the engine. In this regard,
Scanning Electron Microscope (SEM) analyses of the nanoparticles were first
carried out and via a linear reciprocating tribometer, friction coefficients
were determined on specimens comprised of the same material with real engine
piston ring. Subsequently, SEM analyses of the samples exposed to abrasion were
carried out to investigate the wear characteristics. In the second stage of the
experimental study, oil sump of the diesel test engine was filled with raw oil
(oil without nano additives) and prepared nano oils (oil+nano additives)
separately to unravel the effects of the lubricants on engine power and carbon
monoxide (CO) emissions. According to the results, it was determined that
CuZnFe₂O₄ nano lubricant was the most pronounced of all
in terms of tribological performance, engine power and CO emissions. The
results depicted that, in the best case, an average increment of 15% in engine
power and an average reduction of 18% in CO emissions with CuZnFe2O4 nano oil
were provided compared to that of the raw oil.

Keywords

engine oil, Emission, nano additive, performance, tribology

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