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Experimental Investigation of the Effects of Combined Hydrogen and Diesel Combustion on the Emissions of a HSDI Diesel Engine
Technical Paper
2008-01-1787
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The effects of load, speed, exhaust gas recirculation (EGR) level and hydrogen addition level on the emissions from a diesel engine have been investigated. The experiments were performed on a 2.0 litre, 4 cylinder, direct injection engine with a high pressure common-rail injection system. Injection timing was varied between 14° BTDC and TDC and injection pressures were varied from 800 bar to 1400 bar to find a suitable base point. EGR levels were then varied from 0% to 40%. Hydrogen induction was varied between 0 and 6% vol. of the inlet charge. In the case of using hydrogen and EGR, the hydrogen replaced air. The load was varied from 0 to 5.4 bar BMEP at two engine speeds, 1500 rpm and 2500 rpm.
For this investigation the carbon monoxide (CO), total unburnt hydrocarbons (THC), nitrogen oxides (NOx) and the filter smoke number (FSN) were all measured. The in-cylinder pressure was also captured to allow the heat release rate to be calculated and, therefore, the combustion to be analysed.
The experimental data showed that although CO, FSN and THC increase with EGR, NOx emissions decrease drastically. Inversely, CO, FSN and THC emissions decrease with hydrogen, but NOx increases. This inverse relationship will allow the combination of EGR and hydrogen induction to be optimised to minimise both FSN and NOx. When hydrogen was introduced the peak cylinder pressure was increased, as was the rate of cylinder pressure rise. The position of the peak cylinder pressure was delayed as hydrogen addition increased. This together with the obtained heat release patterns shows an increase in ignition delay, and a higher proportion of premixed combustion.
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Authors
Citation
McWilliam, L., Megaritis, T., and Zhao, H., "Experimental Investigation of the Effects of Combined Hydrogen and Diesel Combustion on the Emissions of a HSDI Diesel Engine," SAE Technical Paper 2008-01-1787, 2008, https://doi.org/10.4271/2008-01-1787.Also In
References
- Lee, CS Lee, KH Kim, DS “Experimental and numerical study on the combustion characteristics of partially premixed charge compression ignition engine with dual fuel” Fuel 82 2003 553 560
- Tsolakis, A Megaritis, A “Exhaust Gas Fuel Reforming for Diesel Engines - A Way to Reduce Smoke and NOx Emissions Simultaneously” SAE 2004-01-1844 2004
- Tsolakis, A Megaritis, A “Partially premixed charge compression ignition engine with on-board H2 production by exhaust gas fuel reforming of diesel and biodiesel” International Journal of Hydrogen Energy 30 2005 731 745
- Senthil Kumar, M. Ramesh, A. Nagalingam, B. “Use of hydrogen to enhance the performance of a vegetable fuelled compression ignition engine” International Journal of Hydrogen Energy 28 2003 1143 1154
- Tsolakis, A. Hernandez, J.J. Megaritis, A. Crampton, M. “Dual Fuel Diesel Engine Operation Using H2. Effect on Particulate Emissions” Energy and Fuels 19 2005 418 425
- Tsolakis, A. Megaritis, A. Yap, D. Abu-Jrai, A. “Combustion characteristics and exhaust gas emissions of a diesel engine supplied with reformed EGR” SAE 2005-01-2087
- Shudo, T. Yamada, H. “Hydrogen as an ignition controlling agent for HCCI combustion engine by suppressing the low temperature oxidation” International Journal of Hydrogen Energy 32 2006 3066 3072
- Chen, K. Karim, G.A. Watson, H.C. “Examination of the Development of Inhomogeneities and Auto ignition During Rapid Compression of Hydrogen-Oxygen-Argon Mixtures” Transactions of the ASME 458 125 2003
- Heywood, J.B. Internal Combustion Engine Fundamentals McGraw-Hill Book Company 0-07-100499-8 Singapore 1988
- Stone, R. Introduction to Internal Combustion Engines Second MacMillan Press Ltd 0-333-55084-6 Pbk, Basingstoke, Hampshire 1992
- Zumdahl, S.S. Chemical Principles Second D.C. Heath and Company 0-669-39321-5 Lexington, MA 1995