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http://dx.doi.org/10.15435/JILASSKR.2020.25.4.170

Analysis of Energy Losses in a Natural Gas Spark Ignition Engine for Power Generation  

Park, Hyunwook (한국기계연구원 그린동력연구실)
Lee, Junsun (과학기술연합대학원대학교 환경에너지기계공학)
Oh, Seungmook (한국기계연구원 그린동력연구실)
Kim, Changup (한국기계연구원 그린동력연구실)
Lee, Yongkyu (한국기계연구원 그린동력연구실)
Kang, Kernyong (한국기계연구원 그린동력연구실)
Publication Information
Journal of ILASS-Korea / v.25, no.4, 2020 , pp. 170-177 More about this Journal
Abstract
Stoichiometric combustion in spark ignition (SI) engines has an advantage of meeting future stringent emission regulations. However, the drawback of the combustion is a lower thermal efficiency than that of lean burn. In this study, energy losses in a natural gas stoichiometric SI engine generator were analyzed to establish a strategy for improving the generating efficiency (GE). The energy losses were investigated based on dynamometer and load bank experiments. As the intake manifold pressure increased in the dynamometer experiment, the brake thermal efficiency (BTE) increased mainly due to the reduction in the pumping and mechanical losses. In the load bank experiment, the generating power and GE increased with the increased intake manifold pressure. The generating power and GE were lower than the brake power and BTE due to the cooling fan power and the losses in the generator.
Keywords
Natural gas; Spark ignition; Energy loss; Brake thermal efficiency; Generating efficiency;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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