Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
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Cycle-to-Cycle Fluctuations in a Spark Ignition Engine at Low Speed and Load

  • Han, Sung Bin (Department of Mechanical & Automotive Engineering, Induk University) ;
  • Hwang, Sung Il (Department of Automotive Engineering, Suwon Science College)
  • Received : 2012.05.09
  • Accepted : 2013.06.10
  • Published : 2013.06.30
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Abstract

Cycle-to-cycle variation has long been recognized as limiting the range of operating conditions of spark ignition engines, in particular, under lean and highly diluted operation conditions. At a part load, some of the cycles tend to knock, while others may have incomplete combustion by the time the exhaust valve opens. An experimental study has been performed in order to evaluate the relative contribution of several relevant parameters on the cyclic variability in spark ignition engines. In general, the stability of engine operation is improved with fuel injector according to the optimal injection timing, but the stability of engine operation at idle is not improved compared with a practical gasoline engine. In this study, we investigated the relationship of the effect of operating conditions for the stability at low speed and load.

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References

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