| IMPLEMENTATION OF A NON-SURFACTANT WATER-IN-DIESEL
EMULSION FUEL IN A COMMON RAIL DIRECT INJECTION
DIESEL VEHICLE |
| Hasbullah Abdul Rahman 1,2, Md. Mujibur Rahman 1, Wira Jazair Yahya 1, Tamanna E Kaonain 1, Hasannuddin Abd Kadir 3, Mohamad Qayyum Mohd Tamam 1, Ahmad Muhsin Ithnin 1, Fauzan Ahmad 1, Mohd Fareez Edzuan Abdullah 4, Hirofumi Noge 5, Chungpyo Hong 6, Takeshi Otaka 6, Eiji Kinoshita 6 |
1Advanced Vehicle System, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia
2RTES Technology (M) Sdn. Bhd.
3College of Engineering, Universiti Teknologi MARA Cawangan Johor, Kampus Pasir Gudang
4School of Engineering and Physical Sciences, Heriot-Watt University Malaysia
5Graduate School of Education, Okayama University
6Department of Mechanical Engineering, Kagoshima University |
 Corresponding Author.
Wira Jazair Yahya , Email. wira@utm.my
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| ABSTRACT |
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Water-in-diesel emulsion fuel has become a popular alternative fuel for diesel engines. The main limitation is
related to its stability, whereby it relies heavily on surfactants to remain homogeneous, therefore causing production costs to
rise. This paper highlights the application of real-time non-surfactant emulsion fuel supply system (RTES), a water/diesel
emulsifying device without surfactants, to produce water-in-diesel emulsion fuel in a common rail direct injection diesel
engine powered vehicle. In this study, RTES was installed near to the diesel fuel pump to ensure water-in-diesel emulsions
were continuously fed to the engine. The test vehicle was set up on a roller dynamometer and operated following a modified
West Virginia University (WVU) 5-Peak cycle. Fuel consumption and exhaust emissions were measured to determine the
optimum water percentage of emulsion fuel and suitable timing for emulsion fuel to be introduced into the fuelling system
based on the vehicle speed. The results revealed that the optimum water percentage of the emulsion fuel for the test vehicle is
10 wt%, as it was capable to reduce fuel consumption as well as nitrogen oxides and smoke emissions of a common rail direct
injection diesel engine powered vehicle. |
| Key Words:
Emulsion fuel, Non-surfactant, Common rail diesel engine, Diesel emissions, Water-in-diesel |
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