Abstract
This paper deals with analysis of the influence of fuel injection pressure with ternary fuel (diesel + Mahua methyl ester + Pentanol) on the emission, combustion and performance characteristics of a four stroke, single cylinder, common rail direct injection diesel engine working at a constant speed and varying operating scenarios. The usage of ternary fuel raised the NOx emission (12.46 %) value and specific fuel consumption (SFC) with a decrease in the BTE (brake thermal efficiency) which attributes to its properties and combustion characteristics. The combustion process was affected by the physical properties of the blended fuel such as volatility and viscosity and this eventually affected the performance of the engine. The fuel injection pressure is varied from 20 MPa to 50 MPa so that ternary fuel can be properly utilized. The high injection pressure of 50 MPa has better combustion characteristics and higher brake thermal efficiency (4.39 %) value than other injection pressure values. A better mixture is formed due to well atomized spray and as a result, the levels of CO (22.24 %), HC (9.49 %) and smoke (7.5 %) falls with the increase in injection pressure.
Highlights
Due to the heavy usage of fuels around the world, fuel energy demand is increasing at a speedy rate
This paper deals with analysis of the influence of fuel injection pressure with ternary fuel on the emission, combustion and performance characteristics of a four stroke, single cylinder, common rail direct injection diesel engine working at a constant speed and varying operating scenarios
Venu et al (2016) studied about the impact of ANP in ethanol - biodiesel-diesel ternary blend at different injection timings and found that the combustion of nanoparticles was effectual in delayed injection timing and decreasing the hazardous tailpipe emissions like nitrogen oxide, carbon monoxide, smoke and hydrocarbons. (Prabu et al 2016) investigated the influence of nano additives blended with jatropha in a diesel engine and reported that the high brake thermal efficiency of 31% and a decreased value of brake specific fuel consumption of 0.293 kg/kWh
Summary
Due to the heavy usage of fuels around the world, fuel energy demand is increasing at a speedy rate. (Soudagar et al 2018) investigated the impact of nanoparticles on performance characteristics of biodiesel blended diesel engine and reported that incorporation of nano additives resulted in an increase in improvement of thermophysical properties, decrease in emissions from engine tailpipe, better stabilization of air-fuel mixture. (El-Seessy et al.2018) studied the impact of nanoparticle additives blended biodiesel to study the performance characteristics of diesel engine on various loading conditions by adding different ANPs (aluminium oxide nanoparticles) concentrations and reported that at full load condition, there was a decrease in various exhaust emissions like hydrocarbons reduced by 80%, nitrogen oxides by 70% and carbon monoxide reduced by 60%. This value is obviously within the acceptable uncertainty range i.e., less than ± 5%
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