This book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission Chapters cover: Introduction to the Four-Stroke EngineGas Flow through Four-Stroke EnginesDischarge Coefficients of Flow within Four-Stroke EnginesCombustion in Four-Stroke EnginesComputer Modeling of Four-Stroke EnginesEmpirical Assistance for the Designer of Four-Stroke Engines;Reduction of Noise Emission from Four-Stroke Engines.