Physics Unit 11: Heat Engines – Otto Cycle

In this lesson we learn about heat engines, thermodynamic efficiency and internal combustion engines.


Otto cycle videos

Thermodynamics efficiency:


Problem:A car engine burns gasoline and the burnt gas reaches a temperature of 1000 degreesF. he gas is exhausted at 200F.
Calculate the thermodynamic efficiency f this engine if there are no other energy losses.

Internal energy: kinetic energy of motion of atoms and molecules

KE of molecules 3/2 kT