The combustion in a gasoline engine may be approximated by a constant volume heat addition process. There exists the air-fuel mixture in the cylinder before the combustion and the combustion gases after it, and both may be approximated as air, an ideal gas. In a gasoline engine, the cylinder conditions are 1.2 MPa and 450oC before the combustion and 1750oC after it. Determine the pressure at the end of the combustion process.

Combustion chamber 1.2 MPa 450 0 FIGURE P3-111