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The combustion of homogeneous charge compression ignition (HCCI) fuelled with methanol was achieved on a modified CI engine by heating the intake air. The effects of intake temperature and mixture concentration on HCCI combustion characteristics and emissions were analyzed in this paper. Initially the experimental run with pure diesel then the piston is modified with CE Coated Engine - Aluminium oxide Al2O3 and addition of methanol on HCCI engine, then the same type of experimental have been carried under the Lemon Grass Methyl Ester (LGME) with coating and methanol in HCCI Engine. The result of the experiment with performance of BTE increases with coated engine and decreases by addition of methanol, LGME blend results has decreases and increases with (CE) and decreases by addition of methanol. BSFC results increased with all condition because the blend and thermal coating had a higher viscosity and lower energy content. The emission results such as CO, HC NoX and smoke were the NoX is slightly increased when compared to other emission in future the impact of adopting a varied compression ratio and technique to analysis the NoX emission control. [ABSTRACT FROM AUTHOR]

In this study, the RSM technique is used to estimate the highest biodiesel yield with respect to different parameters such as reaction temperature, molar ratio, catalyst concentration, and reaction time were considered. Algae oil, gathered from lakes and ponds, was the primary raw material used for this work. Algae oil production was warmed to 180 degrees Celsius to remove moisture before filtration using sterile method to remove solid contaminants. In order to determine appropriate reaction parameters, preheat-assisted in real time transesterification was performed. Response surface methodology with a central composite design was utilized to test various experimental circumstances. The catalyst concentration (6-12 wt.%) and reaction duration (3-5 hr) were the two independent variables. The highest biodiesel production was found below optimized conditions of 12 wt.% catalyst concentration and 5 H reaction time with constant methanol concentration (15 ml), yielding 89.5%. Biodiesel yield is comparing with 2d graphical representation on reaction temperature vs catalyst concentration. From the 2d surface which understand the biodiesel yield is increased due the reaction temperature at 2.3 percentage (i.e.) 62.5°C to 65°C and Catalyst concentration (wt. %) at 4.9 percentage (i.e.) 9.8 wt.% to 11.5 wt.%. The objective of the research has produced low-cost feedstock with the highest yield for the algae methyl ester production. [ABSTRACT FROM AUTHOR]