International Journal of Energy Engineering          
International Journal of Energy Engineering(IJEE)
Frequency: Yearly
Editor-in-Chief: Prof. Sri Bandyopadhyay(Australia)
Investigating the Effect of Oxyhydrogen on the Performance of a Compression Ignition Engine
Full Paper(PDF, 209KB)
Evaluating the performance enhancement of a diesel engine through the addition of Oxy-hydrogen (HHO) gas generated through water electrolysis has been investigated by several researchers. The outcomes were claimed to be very promising. It is thought however that the results need more investigation. This study is carried out to evaluate the influence of adding HHO gas into the inlet air on the performance of a direct injection diesel engine. The experimental work is carried out under constant speed with varying load and amount of introduced HHO generated through water electrolysis. In this work the results contrary to many publication showed that, the thermal efficiency increases only at low loads and the brake specific fuel consumption consequently decreases at low loads too (up to 23% of maximum load). Using oxyhydrogen; the maximum engine power decreases with increasing electrolyte concentration. The maximum reduction in maximum power was (3.8 % to 7.6). An explanation for the results was attempted.
Keywords:Oxyhydrogen; Thermal Efficiency; Fuel Consumption
Author: Ahmed M. Rashad1
1.Mechanical Power Department, MTC Kopry Elkoba, Cairo, Egypt
  1. Haroun A. K. Shahad and Nabeel Abdul-Hadi, “Experimental Investigation of the Effect of Hydrogen Manifold Injection on the Performance of Compression Ignition Engines,” World Academy of Science, Engineering and Technology, vol. 76, pp. 277-282, 2011.
  2. Kasianantham Nanthagopal, Rayapati Subbarao, Thangavelu Elango, Ponnusamy Baskar, and Kandasamy Annamalai, “Hydrogen Enriched Compressed Natural Gs – A Futuristic Fuel For Internal Combustion Engines,” Thermal Science, vol. 15, no. 4, pp. 1145-1154, 2011.
  3. K. Chakrapani and P. Neelamegam, “Optimization Of Fuel Consumption Using HHO In HDL Technique Verified In FPGA,” Journal of Theoretical and Applied Information Technology, vol. 31, no.23, pp. 140-146, September 2011.
  4. W. B. Santoso, A. Nur, S. Ariyono, and R.A. Bakar, “Combustion Characteristics Of A Diesel-Hydrogen Dual Fuel Engine,” National Conference in Mechanical Engineering Research and Postgraduate Studies (2nd NCMER 2010), Faculty of Mechanical Engineering, UMP Pekan, Kuantan, Pahang, Malaysia, pp. 23-32, 3-4 December 2010.
  5. K. S. Varde and G. A. Frame, “Hydrogen Aspiration in a Direct injection Type Diesel Engine- Its Effects On Smoke and Other Engine Performance Parameters,” International Journal of Hydrogen Energy, vol. 8, no. 7, pp. 549-555, 1983.
  6. C. M. White, R. R. Steeper, and A. E. Lutz, “The hydrogen-fueled internal combustion engine: a technical review,” International Journal of Hydrogen Energy, vol. 31, pp. 1292-1305, 2006.
  7. Praitoon C., Nithiroth P., and Preecha P., “Effective hydrogen generator testing for on-site small engine,” Physics Procedia, vol. 2, pp. 93-100, 2009.
  8. S. Bari and M. Mohammad Esmaeil, “Effect of H2/O2 addition in increasing the thermal efficiency of a diesel engine,” Fuel, vol. 89, pp. 378-383, 2010.
  9. Yadav S.1, Sawant S. M., Anavkar A.1, and Chavan V., “Investigations on generation methods for oxy-hydrogen gas, its blending with conventional fuels and effect on the performance of internal combustion engine,” Journal of Mechanical Engineering Research, vol. 3. No. 9, pp. 325-332, 21 September 2011.
  10. Emmanuel Z., Elli V., Nicolaos L., Christodoulos N. C., and George N. K., “A Review On Water Electrolysis,” project entitled "Cluster Pilot Project for the Integration of Renewable Energy Sources into European Energy Sectors Using Hydrogen (H2)", funded by the European Union within the 5th Framework Programme under the contract number ENK-CT-2001-00536 (RES2H2).
  11. Hsin-Kai W., Chia-Yu C., Yuan-Chung L., and Kang-Shin C., “Emission reductions of Air Pollutants from a Heavy-duty Diesel Engine Mixed with Various Amounts of H2/O2,” Aerosol and Air Quality Research, vol. 12, pp. 133-140, 2012.
  12. Myles M., Nathan K., Giovany M., and Courtney Z., “Partial Hydrogen Injection,” Report, Wentworth Institute of Technology, Boston, Massachusetts, 2010.
  13. Ali C. Y., Erinc U., and Kadir A., “Effect of hydroxy (HHO) gas addition on performance and exhaust emissions in compression ignition engines,” International journal o f hydrogen energy xxx, pp. 1-7, 2010.