Exhaust Gas Recirculation/Water Injection Experimental Results for NOx Emission Reduction in Diesel Engine

Jeong-Gil Nam

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한국마린엔지니어링학회
Journal of Advanced Marine Engineering and Technology (JAMET) 학술저널
Journal of the Korean Society of Marine Engineering Vol.31 No.7
2007.11 823 - 832 (10page)

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Jeong-Gil Nam

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This paper presents the static characteristics of EGR-WI combined system. The water injection system was statically characterized by recording the engine exhaust outlet NOx emissions for comparison with baseline NOx emissions. Effects of the water injection system on CO and HC emissions and fuel consumption were examined. The research engine used for these experiments was a 103 kW turbocharged, intercooled, 2.5 L VM Motori CIDI engine equipped with a cooled EGR system.
Water injection in the intake system demonstrated the potential for significant reductions in engine outlet NOx emissions. The system has reduced engine outlet NOx emissions by 40-50%, but caused significant increases in CO and HC emissions, particularly at low loads. Fuel consumption effects were minimal.

#Exhaust Gas Recirculation(EGR) #Water Injection(WI) #Combined system #Compression-ignition direct-injection(CIDI) engine #Cooled EGR #NOx emissions