Lecture38_Air_standard_cycle,_IC_engines-handout

Lecture38_Air_standard_cycle,_IC_engines-handout - 1...

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Unformatted text preview: 1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME1091 Email : ebae@purdue.edu Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 38 : Air standard cycle, IC engines 2 Outline Internal combustion engines Air-standard otto cycle Examples 3 Internal combustion engine Internal combustion (IC) engine : combustion of a fuel occurs within a External combustion (EC) engine : working fluid is heated by combustion in 4 Internal combustion engine Nicolas J. Cugnots 1771 model First prototype of automobile was external combustion engine 5 Internal combustion engine Two major types of IC engines Spark ignition engine (gasoline engines) Compression ignition engine (diesel engines-bus, trucks) Gas Mixture Compression P increase T increase 6 Terminology Compression ratio r = V at BDC/ V at TDC Displacement volume = TDC-BDC = 3.0L 3.6 L etc of engine 7 Terminology Four basic steps Chemical reaction happens not a thermodynamic cycle 8 Terminology P-v diagram ? = = ?...
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