Experimental Investigation of the Effect of Hydrogen Manifold Injection on the Performance of Compression Ignition Engines

Experiments were carried out to evaluate the influence of the addition of hydrogen to the inlet air on the performance of a single cylinder direct injection diesel engine. Hydrogen was injected in the inlet manifold. The addition of hydrogen was done on energy replacement basis. It was found that the addition of hydrogen improves the combustion process due to superior combustion characteristics of hydrogen in comparison to conventional diesel fuels. It was also found that 10% energy replacement improves the engine thermal efficiency by about 40% and reduces the sfc by about 35% however the volumetric efficiency was reduced by about 35%.

Authors:

• Haroun A.K. Shahad
• Nabeel Abdul-Hadi

Keywords:

• Hydrogen
• Blended fuel
• Manifold injection
• Performance
• Combustion

References:

[1] L.M. Das ( Hydrogen Engine; Research and development Programs in
Indian Institute of Technology ), International Journal of Hydrogen
Energy, Vol.27, No.9, PP.953-965, 2002.
[2] Polasek Milos, Macek Jan and Takats Michal ( Hydrogen Fueled Engine
Properties of Working Cycle and Emission Potentials ), SAE Paper No.
020373, 2002.
[3] Mihaylov Milen and Barzev Kiril,( Investigation of The Effects of
Hydrogen Addition on Performance and Exhaust Emissions of Diesel
Engine ) ,FISITA World Automotive Congress,23-27 May ,2004
,Barcelona ,Spain .
[4] S.J. Lee , Yi HS and E.S. Kim , ( Combustion Characteristics of Intake
Port Injection Type Hydrogen Fueled Engine ), International Journal of
Hydrogen Energy Vol.20,No.2,pp.317-322,1995.
[5] N. Saravanan, and G.Nagarajan ( Performance and Emission Study in
Manifold Hydrogen Injection With Diesel as an Ignition Source For
Different Starts of Injection ), Renewable Energy, Vol.34,No.1, pp. 328-
334 , 2009.
[6] Mohamed Fadhil Al-Dawoodi, ( Modeling of a Four Stroke Diesel
Engine Operated With Hydrogen Blended Diesel Fuel ) , M.Sc. Thesis,
University of Babylon,
[7] Iraq,2006.
[8] Li Jing-Ding , Lu Ying-Qing and Du Ting-Shen, ( Improvement on
Combustion of Hydrogen Fueled Engine ), International Journal of
hydrogen energy ,Vol.11,No.10,pp.661- 668, 1986 .
[9] S.Bari, and Mohammad M. Esmail ( Effect of H2/O2 Addition in
Increasing The Thermal Efficiency of a Diesel Engine ), Fuel, Vol. 89,
PP. 378-383, 2010.
[10] Tomita Eiji, et.al ( A Study on Hydrogen Combustion Ignited With Light
Oil in a Dual Fuel Engine ), Proceedings of The Fourth JSME-KSME
Thermal Engineering Conference, Oct. 1-6, 2000, Kobe, Japan.
[11] N.Saravanan, and G. Nagarajan ( An Experimental Investigation of
Hydrogen Enriched Air Induction in a Diesel Engine), International
Journal of Hydrogen Energy, Vol.33,No.2,PP.1769-1775, 2008.
[12] Internal Combustion Engine Test Bed , Instruction Manual, Didacta
Company . 2001, Italy www.didacta.com
[13] R.Sirens, and S.Verhelst ( A Hydrogen Fueled V-8 Engine For City
Bus Applications ), International Journal of Automotive Technology,
Vol. 2 No. 2 PP. 39-45, 2001.