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Introduction In the UK, currently 10% (by volume) ethanol is added in gasoline fuel used for road vehicle, with the main purpose for reducing GHG (Greenhouse Gas). The fuel is commercially named E10 Unleaded'. With the addition of ethanol, gasoline engine's operation and control must be re-calibrated for required performance outputs. As a mechanical engineer, you are asked to make the following analysis and research to 'E 10 Unleaded gasoline fuel. Doing the Project With necessary literature review to find the content of Unleaded gasoline fuel, then estimate AFRstoi (stoichiometric Air/Fuel Ratio) of 'E 10 Unleaded' gasoline fuel. . Referring to lower heating values of 'Unleaded' gasoline fuel and ethanol, estimate the lower heating value of 'E10 Unleaded' gasoline fuel, then analyse the influence of E10 Unleaded on driving range (based on the same volume of fuel tank) and customer's economic benefit. Based on possible information about RONs (Research Octane Numbers) of 'Unleaded' gasoline fuel and ethanol, analyse the RON of 'E10 Unleaded' gasoline fuel, then discuss the influence of 'E 10 Unleaded' on knocking combustion of gasoline engine. With necessary literature review, analyse the influence of 'E10 Unleaded' gasoline fuel on emissions, and discuss the long-term influence of the addition of ethanol on relevant components (such as fuel delivery system) and required optimisation on the design of relevant components