TY - JOUR
TI - Two zone thermodynamic model for prediction of particulate matter emission from direct injection diesel engine
AU - Subramaniam Mohankumar
AU - Pachamuthu Senthilkumar
JN - Thermal Science
PY - 2016
VL - 20
IS - 14
SP - 1017
EP - 1028
PT - Article
AB - In this work, two zone thermodynamic models have been developed for  prediction of particulate matter (PM) from direct injection Diesel engine.  Two key compositions of PM were considered in this simulation model  developed, it consists of soot and soluble organic fraction (SOF). Soot  formation model were developed initially and then coupled with SOF model to  get overall PM formation rates. Primary soot formation rate was obtained by  using Hirosysu model and Nagle and Strick-land-Constable model was adopted to  get soot oxidation rate. The oxidation and formation rate difference gives  overall soot formation value. Unburned hydrocarbons were considered as key  factor for SOF formation so the formation and oxidation rate of hydrocarbon  was determined. Then the difference between these two gives overall SOF  formation rate. At last soot formation and SOF model was integrated to get  overall PM formation rate. Various submodels like ignition delay, heat  release rate, and combustion model were involved in this study to predict PM  formation rate. Validation of this simulation model developed were carried  out on single cylinder, naturally aspirated water cooled direct injection  Diesel engine. Simulation results matched well with the experimental results  and it clearly shows that model developed is an accurate one. Results  obtained shows that soot formation increases at higher loads and SOF  formation rate increase at lower loads. Simulation model developed is very  useful for understanding the PM formation mechanisms and also useful for  control of PM formation.