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Reduction of emissions and fuel consumption in a compression ignition engine using nanoparticles
Soukht Saraee, H.; Jafarmadar, S.; Taghavifar, H. & Ashrafi, S. J.
Abstract
In this paper, the effect of adding nanoparticles
on the performance characteristics of diesel engine was
investigated. Up to now, several metallic nanoadditives
including cerium and aluminum have been applied in this
area. However, the possibility of using some other metals
or modification in the additive structures as well as
improving or changing the basic fluid is among factors
manifesting a broad scope of work in this area. For this
purpose, the silver nanoparticles were used as additives to
the net diesel fuel. The results are indicative of significant
alteration in the engine power, oil temperature, and the
proportion of the released pollutants. The presence of the
metallic nanoparticles inside the combustion chamber
augments the heat transfer to fuel and shortens the ignition
delay through an acceleration of the burning process.
Meanwhile, these particles can aid fuel particles further
penetrate in the compressed air during the spraying stage.
Having all of these features altogether will improve combustion
and hence the unburned carbons and other pollutants
will decrease. Based on these observations, the rate of
CO and NOx would be reduced significantly up to 20.5 and
13 %, respectively, noting that the net diesel and HC would
undergo the highest change (up to 28 %). The results also
indicate a 3 % fuel consumption reduction accompanied
with 6 % improvement in the
Keywords
Emissions; Fuel; Diesel; Engine; Nanoparticle; Additive
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