Jie WANG;Zuohua HUANG ;Bing LIU;Xibin WANG; Simulation of combustion in spark-ignition engine fuelled with natural gas-hydrogen blends combined with EGR Jie WANG;Zuohua HUANG ;Bing LIU;Xibin WANG; State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China ; Fig.7 Temperature profile and NO profile in combustion chamber as flame propagates WOT, 20%H 2 , λ =1.1, Ign. timing=30°CA BTDC a Temperature comparison; b NO concentration comparison Frontiers of Energy and Power Engineering in China,2009,3(2),204-211. Doi:10.1007/s11708-009-0026-9