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.

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Combustion chamber 1.2 MPa 450 0 FIGURE P3-111