The combustion in a gasoline engine may be approximated by a constant volume heat addition process, and the contents of the combustion chamber both before and after
combustion as air. The conditions are 1.8 MPa and 450°C before the combustion and 1300°C alter it. Determine the pressure at the end of the combustion process.
A gasoline engine operating at constant volume heat addition process. Assume that the gas is ideal. From ideal gas equation we can say that the pressure is directly proportional to the temperature
The initial pressure of the chamber P1 = 1.8 MPa
The initial temperature of the chamber T1 = 450°C or 723.15 K
The final temperature of the chamber T2 = 1300°C or 1573.15 K