TY - JOUR
T1 - Numerical analysis on the combustion and emission characteristics of forced swirl combustion system for di diesel engines
AU - Su, Liwang
AU - Li, Xiangrong
AU - Zhang, Zheng
AU - Liu, Fushui
PY - 2014/10
Y1 - 2014/10
N2 - To optimize the fuel/air mixture formation and improve the environmental effect of direct injection (DI) diesel engines, a new forced swirl combustion system (FSCS) was proposed concerned on unique design of the geometric shape of the combustion chamber. Numerical simulation was conducted to verify the combustion and emission characteristics of the engines with FSCS. The fuel/air diffusion, in-cylinder velocity distribution, turbulent kinetic energy and in-cylinder temperature distribution were analyzed and the results shown that the FSCS can increase the area of fuel/air diffusion and improve the combustion. The diesel engine with FSCS also shown excellent performance on emission. At full load condition, the soot emission was significantly reduced for the improved fuel/air mixture formation. There are slightly difference for the soot and NO emission between the FSCS and the traditional omega combustion system at lower load for the short penetration of the fuel spray.
AB - To optimize the fuel/air mixture formation and improve the environmental effect of direct injection (DI) diesel engines, a new forced swirl combustion system (FSCS) was proposed concerned on unique design of the geometric shape of the combustion chamber. Numerical simulation was conducted to verify the combustion and emission characteristics of the engines with FSCS. The fuel/air diffusion, in-cylinder velocity distribution, turbulent kinetic energy and in-cylinder temperature distribution were analyzed and the results shown that the FSCS can increase the area of fuel/air diffusion and improve the combustion. The diesel engine with FSCS also shown excellent performance on emission. At full load condition, the soot emission was significantly reduced for the improved fuel/air mixture formation. There are slightly difference for the soot and NO emission between the FSCS and the traditional omega combustion system at lower load for the short penetration of the fuel spray.
KW - DI diesel engines
KW - Forced swirl combustion system
KW - Fuel/air mixture formation
KW - Numerical simulation
UR - http://www.scopus.com/inward/record.url?scp=84901391220&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2014.05.023
DO - 10.1016/j.enconman.2014.05.023
M3 - Article
AN - SCOPUS:84901391220
SN - 0196-8904
VL - 86
SP - 20
EP - 27
JO - Energy Conversion and Management
JF - Energy Conversion and Management
ER -
