1. Ideal Otto Cycles for I.C. Engines
P M V Subbarao
Professor
Mechanical Engineering Department
Improved Thermodynamic Structure of an Engine…

2. Fuel calorific value (kJ/kg)
Ford ECOSPORT
Details
1.5P Ambiente
Displacement (cc)
1499
Max Power output(kW)
Max. Torque (Nm)
Compression Ratio
11:1
Fuel calorific value (kJ/kg)
48,000

3. Ideal Otto & Carnot Cycles

4. Analysis of Otto Cycle

5. Engine Specifications due to an Ideal Otto Cycle

6. Thermodynamic Performance Parameters

7. Thermo-chemical Performance Parameters

8. Other components of Petrol
Name of Hydro-carbon
Sample 1
Sample 2
Formula
Ethanol
13.40%
12.10%
C2H6O
2-methyl-pentane
10.20%
4.50%
C6H14
Hexane 0%
2.10%
Pentane
5.50%
3.70%
C5H12

10. Isentropic Compression model with variable properties
For compression from 1 to 2:

11. First Order Models for Variable Specific Heats

13. Isentropic expansion model with variable properties
For expansion from 3 to 4:

16. First Order Models for Specific Heat at Constant Volume

17. Isentropic expansion model with variable properties
For expansion from 3c to 4c: