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Influence of Water Injection on Performance and Emissions of a Direct-Injection Hydrogen Research Engine
Technical Paper
2008-01-2377
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The application of hydrogen (H2) as an internal combustion (IC) engine fuel has been under investigation for several decades. The favorable physical properties of hydrogen make it an excellent alternative fuel for IC engines and hence it is widely regarded as the energy carrier of the future. Direct injection of hydrogen allows optimizing this potential as it provides multiple degrees of freedom to influence the in-cylinder combustion processes and consequently engine efficiency and exhaust emissions.
At certain operating conditions the stratification associated with hydrogen direct injection (DI) leads to an efficiency improvement. However, it also results in higher emissions levels. This paper examines the effects of combining an advanced direct injection strategy with water injection for efficiency benefits and emissions reduction of a hydrogen fuelled DI spark ignition (SI) engine. Results from experimental investigations at various levels of water injection on engine efficiency, combustion duration and stability as well as NOx emissions are discussed. The results show that water injection into the intake manifold results in a decrease in the NOx emissions up to nearly 55% at a marginal loss in efficiency.
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Citation
Nande, A., Wallner, T., and Naber, J., "Influence of Water Injection on Performance and Emissions of a Direct-Injection Hydrogen Research Engine," SAE Technical Paper 2008-01-2377, 2008, https://doi.org/10.4271/2008-01-2377.Also In
References
- Verhelst S. Sierens R. “A Critical Review of Experimental Research on Hydrogen Fueled SI Engines” SAE paper 2006-01-0430
- Wimmer A. Wallner T. Ringler J. Gerbig F. “H 2 -Direct Injection - A Highly Promising Combustion Concept” SAE paper 2005-01-0108
- Wallner T. Nande A. M. Naber J. D. “Evaluation of Injector Location and Nozzle Design in a Direct-Injection Hydrogen Research Engine” SAE paper 2008-01-1785
- Eichlseder H. Wallner T. Freymann R. Ringler J. “The Potential of Hydrogen Internal Combustion Engines in a Future Mobility Scenario” SAE paper 2003-01-2267
- Bleechmore C. Brewster S. “Dilution Strategies for Load and NO x Management in a Hydrogen Fuelled Direct Injection Engine” SAE paper 2007-01-4097
- Subramaniam V. Mallikarjuna J. M. Ramesh A. “Effect of Water Injection and Spark Timing on the Nitric Oxide Emission and Combustion Parameters of a Hydrogen Fueled Spark Ignition Engine” International Journal of Hydrogen Energy 32 2007 1159 1173
- Nande A. Swaja S. Naber J. D. “Impact of EGR on Combustion Processes in a Hydrogen Fuelled SI Engine” SAE paper 2008-01-1039
- U.S. Department of Energy FreedomCAR and Fuel Technical Partnership Technical Goals Washington, D.C. 2002
- Wallner T. Ciatti S. Bihari B. Stockhausen W. Boyer B. “Endoscopic Investigations in a Hydrogen Internal Combustion Engine” 1 st International Symposium on Hydrogen Internal Combustion Engines Graz, Austria 2006
- Wallner T. Lohse-Busch H. “Light Duty Hydrogen Engine Research at ANL” Symposium “Bridging the Technology…Hydrogen Internal Combustion Engines” San Diego, CA 2006