Exhaust emissions reduction of diesel engine fueled with emulsified palm oil methyl esters

Amir Aziz*, Wong Chung Siong, Rizalman Mamat, Ftwi Yohaness Hagos

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


An emulsion fuel is one of an alternative method that has been used to reduce exhaust emissions from diesel engine. However, water emulsion of biodiesel was not properly explored in diesel engine. In this work, the effect of water concentration in palm oil diesel emulsions (POD) [POD is palm oil Methyl ester] on exhaust emissions of a four-cylinder diesel engine was investigated. The engine speed was set at 2500 rpm and loads at 20, 40 and 60%. Water-in-POD emulsions were prepared using ultrasonic emulsifier by mixing POD fuel with 5, 10 and 20% of water by volume. Results of exhaust emissions for POD and their emulsion were compared with ordinary diesel (OD) fuel. The experimental results show that, the increasing water concentration in POD decrease the NOx and PM simultaneously. POD-water emulsion is a promising alternative fuel for reducing emissions from diesel engines without any engine modification.

Original languageEnglish
Title of host publicationAdvances in Mechanical, Materials and Manufacturing Engineering - ICME 2014
EditorsAmir Khalid, Bukhari Manshoor, Kamil Abdullah, Waluyo Adi Siswanto, Erween Abdul Rahim, Amir Khalid, Bukhari Manshoor, Kamil Abdullah, Erween Abdul Rahim, Amir Khalid, Waluyo Adi Siswanto, Amir Khalid
PublisherTrans Tech Publications Ltd
Number of pages5
ISBN (Electronic)9783038352785, 9783038352785
Publication statusPublished - 2014
Event5th International Conference on Mechanical and Manufacturing Engineering 2014, ICME 2014 - Bandung, Indonesia
Duration: Oct 29 2014Oct 30 2014

Publication series

NameApplied Mechanics and Materials
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482


Conference5th International Conference on Mechanical and Manufacturing Engineering 2014, ICME 2014


  • Biodiesel
  • Diesel engine
  • Emission
  • Emulsified
  • Engine load

ASJC Scopus subject areas

  • Engineering(all)

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