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...Unit manufacture of fuels and lubricants structure petroleum refining process thermal cracking catalytic polymerization alkylation isomerisation blending products lubricating oil base stocks finished automotive distillation curve introduction the engine converts heat energy which is obtained from chemical combination fuel with oxygen into mechanical since isderived fundamental knowledge in types their characteristics essential order to understand combustion phenomenon a combustible substance containing carbon as main constituent on proper burninggives large amount can be used economically for domestic industrial purposes during like coal atoms hydrogen etc combine simultaneous liberation at rapid rate o primary or source are coals oils these stored available earth s crust generally called fossil classification natural secondary derived solid wood crude gas coke tar peat charcoal kerosene water lignite diesel petrol bio dung blast furnace briquette synthetic gasoline oven l p g may clas...