2017•Journal of Emerging Technologies and Innovative ResearchRequires access
Effects of change of compression ratio on the performance of CI engine fueled with various biodiesel - diesel blends - A review
Prayag Pandya, Nirav Joshi
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Abstract
This work indicates the effects of change of compression ratio on the performance of CI engine fueled with various biodiesel-diesel blends. Various performance parameters like Brake Specific Fuel Consumption (BSFC), Brake Thermal Efficiency (BTE), Brake Power (BP) and emission parameters like Carbon monoxide (CO), Hydrocarbon (HC), Nitrogen oxides (NOx) compared for various compression ratios with various biodiesel - diesel blends. It is found that around 30% reduction in Brake Specific Fuel Consumption (BSFC) was observed and Brake Thermal Efficiency (BTE) is improved by 13% for diesel fuel at full load on increasing the compression ratio from 16 to 18. At the same time, Hydrocarbon (HC) emission reduced by 25%, Carbon monoxide (CO) emission reduced by 20.5% and NOx emissions increases from 165 ppm to 220 ppm for diesel fuel at full load on increasing the compression ratio. Rise in compression ratio also results in increase of Brake Thermal Efficiency (BTE) from 31.41 % to 31.67% for diesel - biodiesel blends at compression ratio of 19.5:1 which is due to fact that increase in compression ratio ensures more complete combustion of fuel and improved performance of engine.