Effects of a CRDI Engine Running on Biodiesel, n-Octanol and Nanoparticle Blended Nanofuel on Performance, Emissions and Combustion

In order to popularize the use of pure biodiesel (B100) in diesel engines, its fuel properties should be improved. For this purpose, biodiesel fuel properties are enhanced by n -octanol and multi-walled carbon nanotube (MWCNT) nanoparticles. The effects of these fuels on performance, combustion and exhaust emissions in a diesel engine were experimentally investigated. n -Octanol is added to biodiesel at a rate of 5%, and it is named B95O5. MWCNT is also added to B95O5 as 100 ppm, and the test fuel is specified as B95O5100MWCNT. The experiments are carried out with a CRDI diesel engine at four different loads (25%, 50%, 75% and 100%) and at a constant engine speed of 1500 rpm. According to the results, all performance, emission and combustion parameters except BSFC are reduced compared to diesel (D100), with the use of B100, B95O5 and B95O5100MWCNT. With the addition of n -octanol to pure biodiesel, HC, CO 2 and BTE increase on average by 9.10%, 2.12% and 1.62% for all loads, while NO, BSFC and engine power decrease by around 6.21%, 1.69% and 6.8%, respectively. In addition, with the addition of MWCNT to B95O5, HC, CO 2 , NO and BTE increased by 4.5%, 1.58%, 1.46% and 7.10% on average for all loads, respectively. Moreover, BSFC and engine power fell by around 6.27% and 2.04%, respectively. The addition of MWCNT has been found to improve overall performance and emissions, apart from the BSFC. In addition, it is observed that the maximum in-cylinder pressure and HRR improve with the use of n -octanol and MWCNT added fuel.