Question

In an air standard Otto cycle the compression ratio is 9 and compression begins at 45', 0.5 MPa. The maximum temperature of the cycle is 1500°C. Find 5 i) Heat supplied per kg of air, ii) Work done per kg of air. Cycle efficiency iv) Take Cp = 1.005 kJ/kgk and Cv=0.718 KJ/kg K​​

Answer 1

let assume an Otto cycle with compression ratio of CR = 10 : 1. The volume of the chamber is 500 cm³ = 500×10-6 m3 (0.5l) prior to the compression stroke. For this engine all required volumes are known: V1 = V4 = Vmax = 500×10-6 m3 (0.5l)

Answer 2

Explanation:

Otto cycle: The air-standard-Otto cycle is the idealized cycle for the spark-ignition internal combustion engines. Otto cycle is the one which has two constant volume heat transfer processes and two adiabatic work transfer processes.