TY - CONF EP - 2232 CY - Paris ID - scholars367 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-77953713290&partnerID=40&md5=1dceb0d575c1611ef7796ab15f5b1161 N1 - cited By 1; Conference of International Gas Union Research Conference 2008, IGRC 2008 ; Conference Date: 8 October 2008 Through 10 October 2008 A1 - Aziz, A.-R.A. A1 - M-Adlan, A. A1 - Muthalib, M.-F.A. TI - Performance and emission comparison of a direct-injection (DI) internal combustion engine using hydrogen and compressed natural gas as fuels Y1 - 2008/// N2 - Hydrogen internal combustion engine is considered as a suitable pathway to hydrogen economy before fuel cell technologies become more mature and cost effective. In this study, combustion of hydrogen and compressed natural gas (CNG) in a direct injection single cylinder research engine was investigated. Engine performance parameters such as the power, torque, BMEO and COV of hydrogen DI operation were measured and compared to CNG-DI operation. Stoichiometric combustion of CNG at part load (50 throttle opening) is presented and compared with hydrogen at 0.2 and 0.8 equivalent ratio. The slightly-lean hydrogen (0.8 equivalent ratio) resulted in a better overall performance and emission of the engine. SN - 07365721 VL - 3 AV - none SP - 2224 ER -