Abstract
An experimental investigation on exhaust emissions with emulsion fuel was conducted in a diesel engine that equipped with a Real Time Non-Surfactant Emulsion Fuel Supply System, under four different loads operations (1, 2, 3 and 4 kW). RTES is a mixing device that able to produces non-surfactant emulsion fuel which is one of the alternative ways to improve the exhaust emissions of diesel engine, especially Nitrogen Oxides (NOx) and Particulate Matter (PM). As for the test fuel, neat diesel (D2) and tap water-in-diesel emulsion fuel (W/D) are tested as a comparison. Based on the experimental results, emulsion fuel decrease NOx radically compare to D2 in all load conditions with an average reduction of 18.99% respectively. As for the PM, emulsion fuel is lower compare to D2 at all load conditions and lowest at high load. However, tap water emulsion fuel shows high formation of Carbon Monoxide (CO) at all load conditions which due to lower combustion temperature. This significant increment is aligned with the reduction of NOx emissions.
Highlights
Nowadays, greenhouse gasses in our atmosphere have been increasing
It shows that water-in-diesel emulsion fuel (W/D) tap water emulsion fuel reduce Nitrogen Oxides (NOx) significantly compared with diesel Euro 2 (D2) in all load condition
It is concluded that W/D tap water emulsion fuel gives better emissions compare to neat diesel fuel
Summary
Greenhouse gasses in our atmosphere have been increasing. Over 90% of the causes of the climate change come from human activities [1] of which the biggest cause of this catastrophe is contributed from tmospheric emission. Due to better power economy, power performances and durability are widely applied in mass transportation, heavy industries machinery and agricultural sectors. In spite of their preferable superiority, diesel engines are suffering from harmful exhaust emissions especially particulate matters, PM and nitrogen oxides, NOx [3]. These emissions are harmful to the environment and hazardous to human’s health, but they lead to a serious damage to the health like lung cancer, asthma, cardiovascular issues and other fatal illness that would cause death. Introduction of water into diesel engine has been figured out by the researcher to simultaneously reduce the formation of NOx and PM emissions
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