Performance and Emission Study of Palm Oil Ethyl Ester-Diesel Blends in a HSDI Diesel Engine

The main aim of the research is to investigate the performance and emissions of a HSDI diesel engine at a constant speed and different loads, as operated with palm oil ethyl ester (POEE) and fossil diesel (Diesel) blended with POEE from 10 to 50% compared with Diesel. POEE is produced by palm oil reacted with anhydrous ethanol and sodium hydroxide. Diesel mixed with POEE from 20 to 50% and pure POEE resulted in the continuous reduction of engine performance, and exhaust emissions were changed. Carbon monoxide and black smoke were decreased but carbon dioxide and nitric oxide were increased with increasing POEE. This work found that Diesel blended with 10% POEE had similar engine performance to Diesel, and the levels of carbon dioxide and nitric oxide were slightly increased as comparing with Diesel.