ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 25, No. 02, Month AUGUST, Year 2018, Pages 217 - 230

Performance and emissions of a diesel engine using palm ethyl ester

Ekkachai Sutheerasak and Charoen Chinwanitcharoen

Abstract Download PDF

In Thailand, palm is an economical crop which has been produced throughout the year. Use of palm oil as a feed stock to synthesize the palm-oil ethyl ester (POEE) have been continuously studied. However, investigation of performance and emissions of diesel engine using POEE were not reported in many studies. Therefore, the main objective of this study reports on the investigation of fuel properties and diesel-engine performance and emissions using diesel fuel mixed with POEE from 10 to 50% and pure POEE. Results of physical properties of these fuels compared with diesel fuel found that the density increased from 1.45 to 5.33%, viscosity increased from 7.14 to 71.43%, and heating value decreased from 2.43 to 10.56%. Results of engine testing showed that increasing POEE in blending with diesel fuel led to the decrease of thermal efficiency and the increase of specific fuel consumption. Measurement of emissions indicated that there were the release of CO and black smoke decreasing and the release of CO2 and NO increasing with increasing POEE in mixing with diesel fuel.

Keywords

palm oil ethyl ester, diesel fuel, diesel engine, performance, emissions

---