Combined Air-Wall Guided GDI Engine Performance and Emissions Control with E20 and Hydrogen Blended Fuel

Abstract

GDI engine plays an important role in achieving the existing emission standards with spray guided combustion chamber geometry and high fuel injection pressure of gasoline (or) gasoline-ethanol blended fuel. In this study, the combined air-wall guided CC (combustion chamber) geometry of modified GDI engine was used to analyze the performance and emission characteristics with E20 and Hydrogen blended fuel. An engine performance and emission tests were carried out with pure gasoline fuel, E20 blended fuel and E20-Hyrogen fuel blend at a compression ratio of 9.8:1 and constant speed of 1500 rpm under different engine torque values. The test results of E20-Hydrogen blended fuel were compared with E20 and pure gasoline fuels; all the performance and emission parameters of E20-Hydrogen blend fuel shown better results than that of E20 and pure gasoline, except the brake specific NOx emission concentration from E20-Hydrogen fuel blend was shown slightly higher than E20 blended fuel. Bake specific Soot particle emission shown maximum reduction of 78.46% when compared with pure gasoline.