Combined adjustment of injection timing and compression ratio for an agricultural diesel engine fuelled with Nahar methyl ester. Issue 1 (31st December 2022)

• Record Type: Journal Article
• Authors: Dash, Santosh Kumar; Lingfa, Pradip; Barik, Debabrata
• Is Part Of: International journal of ambient energy. Volume 43:Issue 1(2022)
• Page Start: 1482
• Page End: 1494
• Publication Date: 2022-12-31
• Subjects: Nahar methyl ester (NME) -- compression ratio (CR) -- injection timing (IT) -- diesel engine -- performance; Power resources -- Periodicals; Renewable energy sources -- Periodicals; 621.04205
• DOI: 10.1080/01430750.2020.1712250
• Languages: English
• ISSNs: 0143-0750

Abstract

Abstract : This study investigates the effect of compression ratio (CR: 16, 17, standard 17.5, 18) and injection timing (IT: 21°CA, standard 23, 25°CA) of a single cylinder direct injection diesel engine having power output 3.5 kW at rated speed 1500 rpm fuelled by an optimal Nahar methyl ester blend (NME40). For NME40/CR18, the BTE is improved by 1.09% and EGT is lowered by 2.98% compared to NME40 at standard engine settings, at full load. The HC, CO, and smoke emission decreased for NME40/CR18 by about 15.38%, 21.5%, and 0.5% compared to NME40 at standard setting, whereas it is reduced by 25.45%, 23.73%, and 3.4% compared to diesel respectively at full load. At full load, the NOx emission for NME40/CR18 lowered by 4.73% compared to diesel. Combustion analysis reveals that higher CR has positive impact on cylinder peak pressure. Lower ID observed for higher CR and retarded IT operation.