• D Baswaraj
• P V Krishna Murthy
• K Prasanna Lakshmi

This study explores the enhancement of performance and reduction of emission characteristics in a Low Heat Rejection (LHR) Compression Ignition (CI) engine using blends of Tobacco Seed Oil Methyl Ester (TSOME) and Cotton Seed Oil Methyl Ester (CSOME). The investigation focuses on the impact of varying fuel injection pressure (FIP) and fuel injection timing (FIT) on critical engine performance metrics, including brake thermal efficiency (BTE), specific fuel consumption (SFC), and exhaust gas temperature, along with emissions such as nitrogen oxides (NOx), carbon monoxide (CO), hydrocarbons (HC), and smoke opacity. The experimental setup involved a single-cylinder, four-stroke, water-cooled CI engine equipped with a Super Ni90 insert fastened on the piston crown to enhance thermal retention and efficiency. The engine was operated using a 50:50 blend of TSOME and CSOME, with tests conducted at FIPs of 190, 230, and 270 bar, and FITs of CA 27°, 29°, and 31° bTDC. Results reveal that optimizing FIP 230bar and FIT CA 29° bTDC, markedly improves engine performance while reducing emissions with enhanced BTE by 85% and decrease BSFC by 82% due to superior fuel atomization and combustion quality. Advanced injection timing led to a reduction in CO and HC emissions.

FIP, FIT, LHR, TSOME, CSOME

"Enhancing Performance and Emission Characteristics of LHR CI Engine Using TSOME-CSOME Blend by Varying Fuel Injection Pressure and Timing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 10, page no.a663-a675, October-2024, Available :http://www.jetir.org/papers/JETIR2410086.pdf

"Enhancing Performance and Emission Characteristics of LHR CI Engine Using TSOME-CSOME Blend by Varying Fuel Injection Pressure and Timing", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 10, page no. ppa663-a675, October-2024, Available at : http://www.jetir.org/papers/JETIR2410086.pdf