Open AccessPerformance and Sensitivity analysis of Factors Affecting NOx Emissions from Hydrogen Fueled SI Engine
Author(s) -
Eiman Ali Eh. Sheet
Publication year - 2016
Publication title -
mağallaẗ al-buḥūṯ wa-al-dirāsāt al-nafṭiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2710-1096
pISSN - 2220-5381
DOI - 10.52716/jprs.v6i2.148
Subject(s) - nox , automotive engineering , spark ignition engine , spark plug , combustion , ignition system , ignition timing , environmental science , petrol engine , matlab , spark (programming language) , sensitivity (control systems) , equivalence ratio , internal combustion engine , nuclear engineering , simulation , computer science , engineering , chemistry , mechanical engineering , physics , thermodynamics , organic chemistry , electronic engineering , combustor , programming language , operating system
An Analysis of Variance (ANOVA) sensitivity analysis using suitable MATLAB code onthe factors affecting oxides of Nitrogen (NOx) emissions of a hydrogen powered 4-stroke,water-cooled spark-ignition engine was conducted in this work. This was done usingspecialized engine performance and emission simulation software. The parameters studiedwere the engine speed, air-fuel equivalence ratio, spark plug location in addition to some othercombustion parameters like combustion duration, heat loss besides some other usefulperformance parameters. It was found that NOx formation is minimum at peripheral sparklocation, slightly lean (PHI=0.9), and less advance timing is needed. Further, based onANOVA analysis, the combination of engine speed and spark location has more significance(effect based on P-value) compared with engine speed and equivalence ratio. The combinationof engine speed and ignition timing has more significance (effect based on P-value) comparedwith engine speed and equivalence ratio. Also found that NOx emissions behavior is moreclear at lean mixture (PHI = 0.7), central spark location (XSP = 0.5) and retarded ignitiontiming (IGN near zero).