Open AccessEffects of five different parameters on biodiesel HCCI combustion in free-piston engine generator
Author(s) -
Liu Chun-hui,
S. T. Wu,
Shuo Pang
Publication year - 2021
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci2106197l
Subject(s) - homogeneous charge compression ignition , combustion , materials science , piston (optics) , nox , ignition system , automotive engineering , soot , compression ratio , diesel engine , diesel fuel , cylinder , thermodynamics , mechanics , combustion chamber , nuclear engineering , environmental science , mechanical engineering , chemistry , physics , engineering , organic chemistry , wavefront , optics
A coupled 3-D CFD and detailed chemical kinetics model of free-piston engine generator (FPEG) was adopted to investigate the effects of initial parameters on homogeneous charge compression ignition (HCCI) combustion and emission. Biodiesel with 115 species skeletal mechanism was selected as fuel. Five different parameters, namely the initial pressure, the initial temperature, the working frequency, the compression ratio and the fuel equivalence ratio, were selected to analyze their influences in the HCCI combustion simulation of FPEG. The simulation results showed that the change of the five parameters had visible impact on the heat release rate of HCCI combustion, which caused the in-cylinder temperature and pressure to change, and also caused the emission content of NOx and SOOT to change obviously.