Open AccessEffects of EGR and Alternative Fuels on Homogeneous Charge Compression Ignition (HCCI) Combustion Mode
Author(s) -
Saliha Mohammed Belkebir,
B. Khelidj,
Miloud Tahar Abbés
Publication year - 2021
Publication title -
international journal of design and nature and ecodynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.193
H-Index - 13
eISSN - 1755-7445
pISSN - 1755-7437
DOI - 10.18280/ijdne.160203
Subject(s) - chemkin , homogeneous charge compression ignition , combustion , nox , ignition system , exhaust gas recirculation , nitrogen oxide , automotive engineering , environmental science , process engineering , nuclear engineering , waste management , materials science , chemistry , combustion chamber , engineering , aerospace engineering , organic chemistry
We present in this article an analysis of the impacts of the exhaust gas recirculation (EGR) and alternative fuels on HCCI combustion mode. The objective is to reduce the pollutant emissions below the levels of established pollution standards. The ANSYS CHEMKIN-Pro software and the combined chemical kinetics mechanism were used to perform simulations for a closed homogeneous reactor under conditions relevant to HCCI engines. The calculation process is based on one single-zone in the combustion chamber. Numerical simulation has proven the ability of the models adopted, which use the essential mechanisms of the fuel combustion process, to reproduce, among other things, the evolution of the formation of chemical species. This study showed that adding hydrogen (H2) to methane (CH4) is an interesting alternative fuel because it reduces ignition time. It was concluded that an increase of EGR rate conducts to a slower combustion process, lower temperatures, and the reduction of nitrogen oxide (NOX) emissions.