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Experimental Study of Emission Characteristics of a Small Hydrogen S.I. Engine
Technical Paper
2007-32-0074
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English
Abstract
In an attempt to grab potential issues with a hydrogen direct injection lean burn engine to have similar power output to a gasoline-fuelled engine, emission characteristics of a hydrogen engine was investigated. It is demonstrated that low NOx emission can be achievable without any catalytic converter. Two major issues, however, have been recognized, that is, combustion instability at low load conditions and too low temperature of exhaust gas to get enough boosting pressure. Hydrogen concentration heterogeneous of the mixture was focused in the CFD and visualization study. Hydrogen jet design of an injector could contribute to improvement of mixing.
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OHIRA, T., NAKAGAWA, K., YAMANE, K., KAWANABE, H. et al., "Experimental Study of Emission Characteristics of a Small Hydrogen S.I. Engine," SAE Technical Paper 2007-32-0074, 2007.Also In
References
- Inoue, T. et. al. “Experimental Study on Application of Hydrogen Gas Injection at High Pressure into a Small Displacement Spark-Ignition Engine” Proceedings of JSAE Spring Conference, Paper No.20055219 2005
- Nakagawa, K. et. al. “The Effect of Boost Pressure on the Engine Performance by using a Small Hydrogen Fuelled Engine with Direct Injection in the Early Compression Stroke” Proceedings of JSAE Spring Conference, Paper No.20075324 2007
- Kato, R et. al. “Flow and Mixture-Formation Process of an Unsteady Hydrogen Jet” Proceedings of JSME Kansai Branch 82th Conference, Paper No.113 2007