An engine, operating on the Otto cycle principle, has a piston diameter of 100,5 mm and a stroke length of 153mm. when compression begins, the air temperature is 300k and the pressure is 98kPa. The volume compression ratio is 8,5:1. The highest pressure and temperature of the cycle are 3270kPa and 1178k, respectively. The temperature after compression is 512k. The pressure and temperature after expansion are 225kPa and 690k, respectively. The exponent of expansion and compression is 1,25 and the gas constant is 288 j/k g.k
Determine:
The pressure after compression, the volume at the beginning and end of compression stroke.