Dual injection homogeneous charge compression ignition engine simulation using a stochastic reactor model

S. Mosbach, H. Su, M. Kraft, A. Bhave, Fabian Mauss, Z. Wang, J-X Wang

Research output: Contribution to journalArticlepeer-review

57 Citations (SciVal)


Multiple direct injection (MDI) is a promising strategy to enable fast-response ignition control as well as expansion of the homogeneous charge compression ignition (HCCI) engine operating window, thus realizing substantial reductions of soot and NOx emissions. The present paper extends a zero-dimensional-probability-density-function-based stochastic reactor model (SRM) for HCCI engines in order to incorporate MDI and an improved turbulent mixing model. For this, a simplistic spray model featuring injection, penetration, and evaporation sub-models is formulated, and mixing is described by the Euclidean minimal spanning tree (EMST) sub-model accounting for localness in composition space. The model is applied to simulate a gasoline HCCI engine, and the in-cylinder pressure predictions for single and dual injection cases show a satisfactory agreement with measurements. From the parametric studies carried out it is demonstrated that, as compared with single injection, the additional second injection contributes to prolonged heat release and consequently helps to prevent knock, thereby extending the operating range on the high load side. Tracking the phase space trajectories of individual stochastic particles provides significant insight into the influence of local charge stratification owing to direct injection on HCCI combustion.
Original languageEnglish
Pages (from-to)41-50
JournalInternational Journal of Engine Research
Issue number1
Publication statusPublished - 2007

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics


  • stochastic
  • homogeneous charge compression ignition
  • dual injection
  • reactor models


Dive into the research topics of 'Dual injection homogeneous charge compression ignition engine simulation using a stochastic reactor model'. Together they form a unique fingerprint.

Cite this