Abstract
Biodiesel diesel blend as a sustainable renewable source of energy for diesel engine applications have already been established. The present work elucidates the effect of injection pressure variation on the use of optimal Nahar methyl ester diesel blend NME40 in a direct injection diesel engine as part of the energy efficiency improvement study. This study also incorporates the cost analysis and the SWOT analysis of Nahar methyl ester to attract the attention of policy makers and think-tanks for practical implementation. Optimal CR18 and IT23 obtained from the previous study have been fixed to characterize the effect of injection pressure adjustment (170–290 bar with gap of 20 bar, original IP 210 bar). IP250 bar outshines amongst all IPs, which contributes to the increase of BTE (32.51% at full load for NME40). At full load and 250 bar IP, the specific CO and HC emission are observed to be 1.79 g/kWh and 0.016 g/kWh respectively. Peak cylinder pressure is seen to be highest for 250 bar IP, whereas the ignition delay is lowest 6.41° CA for 250 bar IP. Cost analysis and SWOT analysis favors the large scale use of Nahar methyl ester.
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