Technical Paper
A Mean-Value Model of a Turbocharged HCCI Diesel Engine with External Mixture Formation
2005-09-11
2005-24-034
Homogeneous Charge Compression Ignition (HCCI) is currently considered one of the most promising concepts to achieve low NOx and particulate matter emissions in traditional Compression Ignition Direct Injection (CIDI) engines. In spite of these benefits, understanding and controlling the complex mechanisms which govern the onset of combustion process are still extremely difficult, especially because there is little or no direct control on the combustion development as in Spark Ignition or Compression Ignition engines. The proposed paper describes a mean-value model of a HCCI Diesel engine with external mixture formation fitted with Variable Geometry Turbocharger, Intercooler and Cooled EGR. The effort is aimed at understanding and controlling the complex combustion phenomena in order to identify the influence of the control parameters on the auto-ignition process.