It is desired to increase the output of a spark-ignition engine (with a compression ratio of 8:1 and an inlet pressure 1.0 atm) by either: (1) raising the compression ratio from 8 to 11, or (2) increasing the inlet pressure from 1.0 atm to 1.8 atm Assume g = 1.3 and . Using the constant volume cycle as a model for engine operation, which procedure will give: a) The highest pressure in the cycle? b) The highest efficiency? c) The highest i.m.e.p.?
