Air standard cycle

Air standard cycle.

In actual engine, combustion of air-fuel mixture take place inside the cylinder. But to make the analysis simple, we assume that the working fluid is only air. Here we take only air but in actual case it is air+fuel mixture.

Examples: Otto engine, Diesel engine etc.


Assumption in air standard cycle:

1) Air is the working fluid as it makes our analysis simple.

2) Specific heat remains constant. We know that if we increase temperature, specific heat also increases but this changes in specific heat is not significant. So we normally neglect this.

3) All processes are reversible as we are using ideal gas.