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Characteristics of Water-in-Diesel Emulsions in a Single Cylinder Compression Ignition Engine

[+] Author Affiliations
Teja Gonguntla, Robert Raine

University of Auckland, Auckland, New Zealand

Leigh Ramsey

Blended Fuel Solutions, NZ, Wellington & Wairarapa, New Zealand

Thomas Houlihan

Alternative Petroleum Technologies, Reno, NV

Paper No. IMECE2014-38746, pp. V06AT07A072; 10 pages
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 6A: Energy
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4951-4
  • Copyright © 2014 by ASME


The objective of this project was to develop both engine performance and emission profiles for two test fuels — a 6% water-in-diesel oil emulsion (DOE-6) fuel and a neat diesel (D100) fuel. The testing was performed on a single cylinder, direct-injection, water-cooled diesel engine coupled to an eddy current dynamometer. Output parameters of the engine were used to calculate Brake Specific Fuel Consumption (BSFC) and Engine Efficiency (η) for each test fuel. DOE-6 fuels generated a 24% reduction in NOX and a 42% reduction in Carbon Monoxide emissions over the tested operating conditions. DOE-6 fuels presented higher ignition delays — between 1°-4°, yielded 1%–12% lower peak cylinder pressures and produced up to 5.5% lower exhaust temperatures. Brake Specific Fuel consumption increased by 6.6% for the DOE-6 fuels as compared to the D100 fuels. This project is the first research done by a New Zealand academic institution on water-in-diesel emulsion fuels.

Copyright © 2014 by ASME



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