Abstract
This article reports the effects of CuO/water based coolant on specific
fuel consumption and exhaust emissions of four stroke single cylinder
diesel engine. The CuO nanoparticles of 27 nm were used to prepare the
nanofluid-based engine coolant. Three different volume concentrations
(i.e 0.05%, 0.1%, and 0.2%) of CuO/water nanofluids were prepared by
using two-step method. The purpose of this study is to investigate the
exhaust emissions (NOx), exhaust gas temperature and specific fuel
consumption under different load conditions with CuO/water nanofluid.
After a series of experiments, it was observed that the CuO/water
nanofluids, even at low volume concentrations, have a significant
influence on exhaust emissions. The experimental results revealed that,
at full load condition, the specific fuel consumption was reduced by
8.6%, 15.1% and 21.1% for the addition of 0.05%, 0.1% and 0.2% CuO
nanoparticles with water, respectively. Also, the emission tests were
concluded that 881 ppm, 853 ppm and 833 ppm of NOx emissions were
observed at high load with 0.05%, 0.1% and 0.2% volume concentrations of
CuO/water nanofluids, respectively.
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