Internal Combustion Engines: Otto and Diesel Cycles

This lecture covers the principles and operation of two internal combustion engines: the Otto cycle and the Diesel cycle. The Otto cycle, named after its inventor Niklaus Otto, is analyzed in detail, focusing on the six phases involved in the cycle. The lecture explains the assumptions made to calculate the theoretical efficiency and discusses the factors influencing the compression ratio. Moving on to the Diesel cycle, the lecture explores how it differs from the Otto cycle, emphasizing the higher compression ratio and efficiency. The disadvantages of the Diesel cycle, such as increased weight due to higher pressure and temperature requirements, are also discussed. The lecture concludes by posing a question to the audience regarding the CO2 emissions produced by diesel and gasoline engines per kilometer.