TY - JOUR
T1 - Effect of EGR on Transient Characteristics of Turbocharged Diesel Engine
AU - Dong, Tianpu
AU - Zhang, Fujun
AU - Liu, Bolan
AU - Cui, Tao
N1 - Publisher Copyright:
© 2017, Editorial Office of the Transaction of CSICE. All right reserved.
PY - 2017/3/25
Y1 - 2017/3/25
N2 - Experiments of load increasing at constant speed and speed increasing at constant load were conducted on a turbocharged diesel engine with EGR(exhaust gas recirculation). The changing trends of operation parameters of diesel engine versus EGR valve opening was analyzed. Results show that, for the load increasing at constant speed, because of response lag of the turbocharger and mutual influence of inlet and outlet gases, air fuel ratio is decreased and soot emission is increased. For the transient acceleration, the intake flow lag phenomenon is unobvious, air fuel ratio is decreased and soot emission is increased. In the whole transient experiment, intake oxygen volume fraction has greater influence on NOx emission than EGR rate. Because of the change of the intake gas state, the traditional EGR control method based on EGR rate is unsuitable for the transient operating conditions of diesel engine.
AB - Experiments of load increasing at constant speed and speed increasing at constant load were conducted on a turbocharged diesel engine with EGR(exhaust gas recirculation). The changing trends of operation parameters of diesel engine versus EGR valve opening was analyzed. Results show that, for the load increasing at constant speed, because of response lag of the turbocharger and mutual influence of inlet and outlet gases, air fuel ratio is decreased and soot emission is increased. For the transient acceleration, the intake flow lag phenomenon is unobvious, air fuel ratio is decreased and soot emission is increased. In the whole transient experiment, intake oxygen volume fraction has greater influence on NOx emission than EGR rate. Because of the change of the intake gas state, the traditional EGR control method based on EGR rate is unsuitable for the transient operating conditions of diesel engine.
KW - Diesel engine
KW - Exhaust gas recirculation
KW - Transient characteristics
UR - http://www.scopus.com/inward/record.url?scp=85019933346&partnerID=8YFLogxK
U2 - 10.16236/j.cnki.nrjxb.201702017
DO - 10.16236/j.cnki.nrjxb.201702017
M3 - Article
AN - SCOPUS:85019933346
SN - 1000-0909
VL - 35
SP - 118
EP - 124
JO - Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)
JF - Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines)
IS - 2
ER -