A2. A four-cylinder, 1.6 litre, spark ignition automotive engine operates at wide open throttle on a four-stroke air-standard Otto cycle. The engine has a compression ratio of 8.3 and a stroke-to-bore ratio of 1.093. At the start of the compression stroke, conditions inside the cylinder are 1 bar and 333 K. Determine the following quantities: a) Bore, stroke and clearance volume per cylinder. b) Temperature and pressure at the end of the compression stroke. c) Peak cylinder temperature and pressure, if the heat addition is 900 kJ/kg. d) Net work output per cylinder, mean effective pressure and engine power output, assuming an engine speed of 1800 rev/min. e) If this engine is converted to work on a diesel air-standard cycle with the same compression ratio and initial conditions, comment on the thermal efficiency of the two cycles with the help of a P-V diagram. For air use the following values of specific heat at costant pressure and specific gas constant: Cp = 1005 J/kgK; R = 287 J/kgK.