Otto Cycle

Otto Cycle Points : Otto Cycle, Definition The present day petrol (gasoline) engine operates on this cycle. The first successful engine working n this cycle was built by a German scientist Otto in 1876. It is also known as constant volume cycle as the heat is received and rejected at constant volume.
The engine conceived by Otto has air enclosed in a cylinder, whose walls are perfectly non-conductor of heat. But the bottom is a perfect conductor of heat. There is also a hot body and cold body and an insulating cap, which are alternately brought in contact with the bottom of the cylinder. The ideal Otto cycle consists of Iwo constant volume and two adiabatic processes as shown .on p-v diagram. Let the engine cylinder contain mkg of air at point 1. At this point let P₁, T₁, and V₁ b the pressure, temperature and volume of the air. Following are the four stages of the ideal cycle.