Improving the Combustion Characteristics and Emissions Using Nano Titanium Oxide Additive to Biodiesel
Authors/Creators
- 1. Mechanical Engineering Department, Faculty of Engineering, Fayoum University, Egypt
- 2. Mechanical Engineering Dept., Faculty of Engineering, Al-Baha University
Description
It is vital to find alternative fuels to reduce fuel consumption and to reduce exhaust emissions. Biodiesel was produced from waste cooking oil through a process of transesterification. Waste cooking biodiesel physical and chemical properties were measured in accordance with ASTM standards. Biodiesel blend was produced by mixing diesel and biodiesel by volume percentage of 20% as W20. TiO2 nano additive was mixed with biodiesel at 25 mg / l, 50 mg / l and 100 mg / l as 25, 50 and 100 ppm. The aim of this paper is to evaluate the performance and exhaust emissions of diesel engines using a biodiesel blend using nano additive. Tests were carried out on a diesel engine with different engine loads at rated speed of 1500 rpm. Biodiesel blending with nano B20T100 resulted in the highest improvement in BTE and decrease in BSFC by 8.5 and 7% relative to biodiesel blend. Nano additive with waste cooking biodiesel B20T100 achieved the highest reductions in CO, HC, NOx and smoke emissions by 22, 33, 15 and 37% relative to B20. Addition of nano TiO2 to biodiesel blend improved the combustion characteristics related to B20. Biodiesel blend with nano additive concentration of 100 ppm achieve maximum enhancement in performance, combustion characteristics and emissions about biodiesel blend