1. Determine the value of the cutoff ratio that causes the Diesel cold ASC thermal efficiency to become zero for an engine with a 20.0 to 1 compression ratio. Assume k = 1.40.
2. A Diesel cycle internal combustion engine has a compression ratio of 15.0 to 1. At the beginning of the compression process, the pressure is 14.7 psia and the temperature is 520. R. The maximum temperature of the cycle is 4868 R. Determine the cold ASC thermal efficiency. Assume k = 1.40.