Effects on performance, emission and combustion characteristics of dual fuel mode CI engine operated with Waste Cooking oil –Ethanol as fuel 2020-28-0433
This work explores the influence of ethanol on improving engine's behavior of Waste Cooking oil (WCO) based dual fuel diesel engine. A single cylinder diesel engine was tested in dual fuel mode of operation at the maximum rated power output of 3.54 kW. In the current study a diesel engine is made to run using ethanol in dual fuel mode with diesel, where ethanol is introduced as primary fuel into the intake manifold and WCO as pilot fuel. The ethanol energy contents of the total fuel were varied from 5%, 10%, 15%, 20%,25%,30%,35% and 40% were experienced at (1500 ± 10) rpm of constant engine speed The test results showed the improvement in brake thermal efficiency (BTE) of the engine, reduction in brake specific fuel consumption (BSFC) with an increasing ethanol energy fraction. Furthermore, indicated specific NOx, CO, CO2 and smoke emissions decrease with an increasing percentage of ethanol energy content. In addition to that, it was also observed that there was a sharp increase in peak in-cylinder pressure and the peak heat release rate values with the increasing ethanol energy fraction.