[4] An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 100 kPa and 5C, and 800 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Accounting for the variation of specific heats of air with temperature, determine (a) the maximum temperature and pressure that occur during the cycle, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (e) Also, determine the power output from the cycle, in kW, for an engine speed of 4500 rpm (rev/min). Assume that ths cycle is operated on an engine that has four cylinders with a total displacement volume of 1.6 L.