Abstract—The property improvement of palm oil biodiesel (POB) was investigated by mixing a nano-TiO
2 additive in order to achieve in the decrease of exhaust emissions of a diesel engine. The different POB fuel fractions were used including B10, B20, B30, B40, B50, and B100 which are compared with commercial diesel B2 as a fuel standard. The results suggested that the small amount of 0.1% wt nano-TiO
2 additive provided the property improvement such as a decrease in kinematic viscosity and an increase in flash point, cetane index, and heating values. However, there are B2+0.1%TiO
2 and B10+0.1%TiO
2 providing their properties to be accepted in ASTM standard. The experimental results suggested that engine power and torque increased during the range of low engine speed (<2500 rpm) and became decreased during the higher range of engine speed (>3000 rpm). Carbon oxide (CO), carbon dioxide (CO
2), and nitric oxide (NO
x) emissions were measured directly at the tailpipe in order to observe the effect of POB fuel used on the gas emissions. It was found that nano- TiO
2 additive significantly contributed the reduction of CO
2 and NO
x emissions.
Index Terms—Palm biodiesel, nano-TiO
2 additives, compression ignition, engine performance.
K. Fangsuwannarak and Y. Khotbut are with School of Mechanical Engineering, Suranaree University of Technology, Nakhon Ratchasima, 30000 Thailand (e-mail: karoon@sut.ac.th).
T. Fangsuwannarak is with School of Electrical Engineering, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
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Cite:Karoon Fangsuwannarak, Thipwan Fangsuwannarak, and Yongsathon Khotbut, "Effect of Nano-TiO2 Additives Blended in Palm Biodiesel on Compression Ignition Engine Performance," Journal of Clean Energy Technologies vol. 8, no. 3, pp. 20-23, 2020.
