Browse > Article
http://dx.doi.org/10.7842/kigas.2016.20.6.23

A Study on the Characteristic of Conversion Efficiency for Three-way Catalyst in Hydrogen-Natural Gas Blend Fueled Engine  

Park, Cheol-Woong (Dept. of Environmental System Research Division / Engine Research Team, Korea Institute of Machinery and Materials)
Yi, Ui-Hyung (Dept. of Environmental System Research Division / Engine Research Team, Korea Institute of Machinery and Materials)
Kim, Chang-Gi (Dept. of Environmental System Research Division / Engine Research Team, Korea Institute of Machinery and Materials)
Lee, Janghee (Dept. of Environmental System Research Division / Engine Research Team, Korea Institute of Machinery and Materials)
Publication Information
Journal of the Korean Institute of Gas / v.20, no.6, 2016 , pp. 23-30 More about this Journal
Abstract
The conventional natural gas engine realized lean combustion for the improved efficiency. However, in order to cope with exhaust gas regulations enforced gradually, the interest has shifted at the stoichiometric mixture combustion system. The stoichiometric mixture combustion method has the advantage of a three-way catalyst utilization whose purification efficiency is high, but the problem of thermal durability and the fuel economy remains as a challenge. Hydrogen-natural gas blend fuel (HCNG) can increase the rate of exhaust gas recirculation (EGR) because the hydrogen increases burning speed and lean flammability limit. The increase in the EGR rate can have a positive impact on heat resistance of the engine due to the decreased combustion temperature, and further can increase the compression ratio for efficient combustion. In this study, to minimize the exhaust emission developed HCNG engine with stoichiometric combustion method, developed three-way catalyst was applied to evaluate the conversion characteristics. The tests were carried out during the steady state and transient operating conditions, and the results were compared for both the conventional and proto-three-way catalyst of HCNG engine for city buses.
Keywords
Hydrogen-natural gas blend fueled engine; Stoichiometric mixture combustion; Three-way catalyst; Conversion efficiency; Equivalence ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kallinen, K.,Harkonen, M. and Pitkanen, M., "Advanced Catalysts for CNG-Engines", SAE Technical paper, 2004-25-0028 (2004)
2 Khan, M. I., Yasmin, T. and Shakoor, A., "Technical Overview of Compressed Natural Gas (CNG) as a Transportation Fuel", Renewable and Sustainable Energy Revieews, 51, 785-797, (2015)   DOI
3 Schoengaber, J., Richter, J. M., Despres, J., Schmidt, M., Spiess, S. and Roesch, M., "Advanced TWC Technology to Cover Future Emission", SAE Technical paper, 2015-01-0999 (2015)
4 Alger, T., Gingrich, J. and Mangold, B., "The Effect of Hydrogen Enrichment on EGR Tolerance in Spark Ignited Engines", SAE Technical paper, 2007-01-0475 (2007)
5 Saanum, I., Bysveen M., Tunestal,P., Johansson, B. "Lean Burn Versus Stoichiometric operation with EGR and 3-way Catalyst of an Engine Fueled with Natural Gas and Hydrogen-enriched Natural Gas", SAE Technical paper, 2007-01-0015 (2007)
6 Choi, B, C., "Development of Catalyst for Natural Gas Fueled Vehicle", Journal of the Korean Society of Automotive Engineers, 17(2), 1-6, (1995)
7 Jilakara, S, Vaithianathan, J. V., Natarajan, S., Ramakrishnan, V, R., Subash, G. P. and Abraham, M., "An Experimental Study of Turbocharged Hydrogen Fuelled Internal Combustion Engine", SAE Technical paper, 2015-26-0051 (2007)
8 Hu, E. and Huang, Z., "Optimization on Ignition Timing and EGR Ratio of a Spark-Ignition Engine Fuelled with Natural GasHydrogen Blends", SAE Technical paper, 2011-01-0918 (2011)
9 Lee, S. W., Lee, U, H., Lee, S, Y., Choi, Y. and Kim, C, G., "A Study on the Applicablity of Piston for Stoichiometric HCNG engine", KIGAS Spring conference, 7, 9-9 (2015)
10 Kim, C. G., Lee, S. W., Yi, U. H., Park, C. W., Lee, S. Y., Choi, Y. and Lee, J. H., "Effect of Operating Condition Change on the Convertsion Efficiency of TWC with HCNG Engine", Journal of the Korean Institute of Gas, 19(6), 40-46, (2015)   DOI
11 Choi, B. C., Technologies for Emission Aftertreatment, Baro Press Co., (2001)
12 Lee, C. H., Choi, B. C. and Juhng, W. N., "Comparison of NOx Reduction Characteristics of NOx Adsorption Catalyst with TWC for Lean-burn Natural Gas Vehicles", 2004 KSAE Spring Conference, 579-584, (2004)