Abstract
A four stroke, four cylinder, In-direct injection diesel engine was used to study the effect of emulsified diesel fuel with 5% water by volume on the engine performance and on the main pollutant emissions. The experiments were conducted in the speed range from 1000 to 4500 rpm at full load conditions. It was found that, in general, using emulsified fuel improves the engine performance with slight increase in emissions. While the BSFC has a minimum value for 5% water and at all rpm, the torque, the power and the BMEP are found to have maximum values under these conditions when compared conve ntional disel. CO 2 was found to increase with engine speed whereas increase in CO and NOX were minimum. In this work water in diesel emulsion was prepared by a mechanical homogenizer and their physical and chemical properties were examined.
Highlights
Diesel engines offer better fuel to power conversion efficiency and due to their better fuel economy, diesel engines are the dominant class of engines in mass transportation, heavy industries and agricultural sectors
Primary pollutants emitted from diesel engines are particulate matters (PM), black smoke, nitrogen oxides (NOx), sulfur oxides (SOX), unburned hydrocarbon (HC), carbon monoxide (CO), and carbon dioxide (CO 2) [1]
With 5% of water content viscosity of Water in Diesel Emulsion (WiDE) was observed to be on the higher side compared to pure diesel at all measured temperatures as shown in Figure 2.As expected that higher viscosity of WiDE with increasing water content, it is claimed that the Presence of water will affect the ignition delay [6]
Summary
Diesel engines offer better fuel to power conversion efficiency and due to their better fuel economy, diesel engines are the dominant class of engines in mass transportation, heavy industries and agricultural sectors. Researches showed that water-in-diesel emulsions used as a fuel in CI engines can lead to reductions in the adiabatic flame temperature resulting in measurable reductions in the NO X emissions [3, 4]. As for PM emissions, the presence of water during the intensive formation of soot particles seems to reduce the rate of formation of soot particles and enhance their burnout by increased concentration of oxidation species such as OH [5] Exhaust emissions were measured by MRU Vario plus Industrial exhaust gas analyser
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call