Abstract
In this study, a prototype single cylinder engine (capacity 948cc) was fuelled with H2 in both naturally aspirated (NA) as well as in supercharged (SC) conditions and ignited with the help of spark ignition (SI) and laser ignition (LI) respectively. It was observed that H2 engine operated efficiently beyond λ=2.0 in supercharged conditions. Using LI, the peak cylinder pressure and NOx emissions (> 300 ppm) reduced with supercharging. Brake thermal efficiency (BTE) increased with increasing brake mean effective pressure (BMEP) and were higher for LI (40.35%) compared to SI (32.29%) at 3.987 bar BMEP. Lower exhaust gas temperature (EGT) and brake specific fuel consumption (BSFC) were observed for LI with supercharging (LI_SC) compared to SI with naturally aspirated (SI_NA) at stoichiometric conditions.
© 2017 Optical Society of America
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