Experimental analysis of performance and emission characteristics of CRDI diesel engine fueled with 1-pentanol/diesel blends with EGR technique

Abstract

This research work aims to investigate the effect of higher alcohol blends on performance and emission parameters of CRDI CI engine with various EGR rate. 1-pentanol has improved fuel properties compared to lower alcohols. It can be used as a blend with diesel to mitigate the toxic emissions and to reduce the dependency on diesel fuel. The experiment was carried out in a CRDI CI engine with 1-pentanol/diesel blends (10%, 20% and 30% v/v) as a fuel, the speed of the engine kept constant (2000 rpm) by varying the load from 20 to 80% in step of 20%. Two EGR rates (10% and 20%) were also tested with blends to find the effect on engine characteristics. The performance of the engine reduces with higher 1-pentanol proportion in the blend. The experimental investigation showed that for P30D70 about 3.8% drop in BTE, 9.14% rise in BSFC, 16.7% drop in NO<inf>x</inf> emission and a slight rise in HC and CO emission was noted at 60% load. The smooth operation of the engine was noted with 1-pentanol/diesel blends and can be concluded that up to 30% of the 1-pentanol can be used as an alternative to the diesel with a slight cost of performance. © 2020 Elsevier Ltd