The combustion in a gasoline engine may be approximated by a constant volume hea
ID: 2997434 • Letter: T
Question
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 1.62 MPa and 410 degree C before the combustion and 1,260 degree C after it. Determine the pressure at the end of the combustion process. Combustion chamber 1.62 MPa 410 degree C P2 = kPa (Round to the nearest integer)Explanation / Answer
For a constant voume process, PT relationship is given by (P is directly propertional to T)
P2 = (T2/T1)P1 = ((1260+273)/(410+273))*1.62 MPa = 3.6361 MPa
P2 = 3636 kPa (round to nearest integer)