TY - JOUR ID - scholars2272 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072487842&partnerID=40&md5=d046a4880937b5917f606570e9f9ac00 A1 - Noran, N.K. A1 - Naveenchandran, P. A1 - Aziz, A.R.A. N1 - cited By 2; Conference of SAE 2011 World Congress and Exhibition ; Conference Date: 12 April 2011 Through 14 April 2011; Conference Code:91197 CY - Detroit, MI SN - 01487191 N2 - This paper compares the characteristics of combustion of CNG by the pilot homogeneous charge compression ignition of gasoline and combustion of stratified, overall lean SI combustion of CNG. Homogeneous charge of gasoline is created by injecting the fuel in the manifold and the charge is heated by an air heater in order to achieve HCCI combustion of gasoline that ignites the direct injected and stratified CNG at 80 BTDC. The combustion characteristics obtained are compared with that of CNG by spark ignition. The results show that there are significant effects on combustion characteristics, HC, CO and NO x emissions. HCCI combustion has higher fuel conversion efficiency compared to SI and less emissions within certain range of loads. Copyright © 2011 SAE International. KW - Direct injection; Gasoline KW - Air heater; Combustion characteristics; Fuel conversion efficiencies; HCCI combustion; Homogeneous charge compression ignition; Low load; NOx emissions; Spark ignition KW - Ignition TI - Comparison of HCCI and SI combustion of direct injected CNG at low load condition Y1 - 2011/// PB - SAE International AV - none JF - SAE Technical Papers ER -