AMME2262 Lecture 11: Week 11

• School: University of Sydney
• Department: Aeronautical Engineering (Mechanical)
• Course: AMME2262
• Professor: matthew dunn

Document Summary

Air-standard assumption: combustion process is replaced by a heat-addition process. The working fluid is considered to be air, which is an ideal gas and the variations in specific heat are to be accounted for. Air-standard cycle: a cycle for which the air-standard assumptions are applicable. Cold-air-standard assumptions: combustion process is repaced by a heat-addtion process. The working fluid is considered to be air, which is an ideal gas with constant specific heats at room temperature (25oc or 300k) Two stroke and four stroke si engines: four stroke cycle, 1 cycle = 4 stroke = 2 revolution, two sroke cycle, 1 cycle = 2 stroke = 1 revolution. Otto cycle: the ideal cycle for spark-ignition engines. The ideal-diesel cycle: compress fuel-air mixture, rapid heat release. Inject fuel: compress only air, auto-ignition controlled, slower heat release. Dual cycle: a more realistic ideal cycle model for modern, high-speed compression ignition engine.