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Investigation of Supercharging Strategies for PFI Hydrogen Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
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Hydrogen-fueled internal combustion engines (H₂ICEs) are an affordable, practical and efficient technology to introduce the use of hydrogen as an energy carrier. They are practical as they offer fuel flexibility, furthermore the specific properties of hydrogen (wide flammability limits, high flame speeds) enable a dedicated H₂ICE to reach high efficiencies, bettering hydrocarbon-fueled ICEs and approaching fuel cell efficiencies.
The easiest way to introduce H₂ICE vehicles is through converting engines to bi-fuel operation by mounting a port fuel injection (PFI) system for hydrogen. However, for naturally aspirated engines this implies a large power penalty due to loss in volumetric efficiency and occurrence of abnormal combustion.
The present paper reports measurements on a single-cylinder hydrogen PFI engine equipped with an exhaust gas recirculation (EGR) system and a supercharging set-up. The measurements were aimed at increasing the power output to gasoline engine levels or higher, while maximizing efficiency and minimizing emissions. Two strategies were tested: one using stoichiometric mixtures, with or without EGR, where a three-way catalyst (TWC) was relied upon for aftertreatment of oxides of nitrogen (NOX); and a second one using lean mixtures limiting engine-out NOX emissions so that aftertreatment was not needed.
Test results are reported for varying supercharging pressure and engine speed; it is shown that both strategies allow power outputs exceeding gasoline levels. The brake thermal efficiencies for both strategies are compared, to derive the best operating strategy as a function of torque demand and engine speed. It can be concluded that the lean burn supercharged strategy is best overall.
CitationVerhelst, S., Demuynck, J., Martin, S., Vermeir, M. et al., "Investigation of Supercharging Strategies for PFI Hydrogen Engines," SAE Technical Paper 2010-01-0582, 2010, https://doi.org/10.4271/2010-01-0582.
- Verhelst, S. Wallner, T. “Hydrogen-fueled internal combustion engines” Progress in Energy and Combustion Science 35 490 527 2009
- Welch, A. Mumford, D. Munshi, S. Holbery, J. Boyer, B. Younkins, M. Munshi, S. Jund, H. “Challenges in Developing Hydrogen Direct Injection Technology for Internal Combustion Engines,” SAE Technical Paper 2008-01-2379 2008
- Rousseau, A. “Evolution of Hydrogen Fueled Vehicles Compared to Conventional Vehicles from 2010 to 2045,” SAE Technical Paper 2009-01-1008 2009
- Verhelst, S. Sierens, R. Verstraeten, S. “A Critical Review of Experimental Research on Hydrogen Fueled SI Engines,” SAE Technical Paper 2006-01-0430 2006
- Wallner, T. Nande, A. Naber, J. “Evaluation of Injector Location and Nozzle Design in a Direct-Injection Hydrogen Research Engine,” SAE Technical Paper 2008-01-1785 2008
- Verhelst, S. De Landtsheere, J. De Smet, F. Billiouw, C. et al. “Effects of Supercharging, EGR and Variable Valve Timing on Power and Emissions of Hydrogen Internal Combustion Engines” SAE Int. J. Engines 1 1 647 656 2008
- Verhelst, S. Maesschalck, P. Rombaut, N. Sierens, R. “Increasing the power output of hydrogen internal combustion engines by means of supercharging and exhaust gas recirculation” Int J Hydrogen Energy 34 4406 4412 2009
- Nande, A. Szwaja, S. Naber, J. “Impact of EGR on Combustion Processes in a Hydrogen Fueled SI Engine,” SAE Technical Paper 2008-01-1039 2008
- Heywood, J. B. Internal Combustion Engine Fundamentals McGraw-Hill 0-07-028637-X 248 273 1988
- Rottengruber, H. Berckmüller, M. Elsässer, G. Brehm, N. Schwarz, C. “A high-efficient combustion concept for direct injection hydrogen internal combustion engine” 15th World Hydrogen Energy Conference, paper nr 28J-01 Yokohama, Japan 2004
- Verstraeten, S. Sierens, R. Verhelst, S. “A high speed single cylinder hydrogen fuelled internal combustion engine” proceedings Fisita World Automotive Student Congress Barcelona 2004
- Lohse-Busch, H. Wallner, T. Shidore, N. “Efficiency Optimized Operating Strategy of a Supercharged Hydrogen-Powered Four-Cylinder Engine for Hybrid Environment,” SAE Technical Paper 2007-01-2046 2007
- Fujita, T. Ozawa, S. Yamane, K. Takagi, Y. Goto, Y. Odaka, M. “Performance of NOx absorption 3-way catalysis applied to a hydrogen fueled engine” 15th World Hydrogen Energy Conference, paper nr 28J-04 Yokohama, Japan 2004
- Kawamura, A. Yanai, T. Sato, Y. Naganuma, K. Yamane, K. Takagi, Y. “Summary and Progress of the Hydrogen ICE Truck Development Project,” SAE Technical Paper 2009-01-1922 2009