NOx Control of a Diesel Engine Using Waste Cooking Oil via EGR

Abstract

Nowadays, internal combustion engines are the essential parts of transportation and mechanized agricultural system. So, the consumption of diesel and petroleum has been up surged. As petroleum is a non-renewable source and recent surge in petroleum prices have regenerated interest in Bio-fuels, Bio-fuels is considered as an environmentally friendly alternative diesel fuel. It has shown that biodiesel-fueled engines produce less CO, unburned HC and smoke emissions compared to diesel fuel, but higher NOx emissions. Exhaust Gas Recirculation (EGR) is an efficient technique to reduce NOx emissions as it lowers the flame temperature in the combustion chamber. The objective of this work is to reduce NOx emissions from Waste Cooking Oil (WCO) (prepared using the usual transesterification process) fueled single cylinder naturally aspirated DI Diesel engine. Experiments were performed using different mixed concentrations of biodiesel and diesel fuels, including B0, B10, B20 and B30.