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

Mosbach, S.; Su, H.; Kraft, M.; Bhave, A.; Mauss, Fabian LU ; Wang, Z. and Wang, J-X (2007) In International Journal of Engine Research 8(1). p.41-50
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
stochastic, homogeneous charge compression ignition, dual injection, reactor models
in
International Journal of Engine Research
volume
8
issue
1
pages
41 - 50
publisher
Professional Engineering Publishing
external identifiers
  • wos:000261053000005
  • scopus:34250751320
ISSN
1468-0874
DOI
10.1243/14680874JER01806
language
English
LU publication?
yes
id
83e369fe-7eef-47d7-94ba-bfc0f3e2ecdd (old id 1406763)
date added to LUP
2009-06-04 11:02:33
date last changed
2017-05-28 04:19:17
@article{83e369fe-7eef-47d7-94ba-bfc0f3e2ecdd,
  abstract     = {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.},
  author       = {Mosbach, S. and Su, H. and Kraft, M. and Bhave, A. and Mauss, Fabian and Wang, Z. and Wang, J-X},
  issn         = {1468-0874},
  keyword      = {stochastic,homogeneous charge compression ignition,dual injection,reactor models},
  language     = {eng},
  number       = {1},
  pages        = {41--50},
  publisher    = {Professional Engineering Publishing},
  series       = {International Journal of Engine Research},
  title        = {Dual injection homogeneous charge compression ignition engine simulation using a stochastic reactor model},
  url          = {http://dx.doi.org/10.1243/14680874JER01806},
  volume       = {8},
  year         = {2007},
}