1. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Chapter 6 Internal Combustion Engines

2. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. I. C. Engines “The heat engine in which the combustion takes place inside the cylinder or the product of combustion (flue gas) directly goes to the cylinder and the heat energy of the flue gas is converted into mechanical energy is known as Internal Combustion Engine (IC Engine).” The combustion may take place either inside or outside the cylinder but heat energy of the combustion is directly utilized by the engine to produce into mechanical power. In external combustion engines, heat of the combustion is transferred to the intermediate medium like water or air and then the heat energy of that intermediate medium (steam produced from the water or the hot air) is converted into the mechanical energy.

3. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Basis for Classification of I.C. Engines Number of strokes per cycle. Nature of thermodynamic cycle. Ignition systems. Fuel used. Arrangement of cylinders. Cooling systems. Fuel supply systems. Number of strokes per cycle. Nature of thermodynamic cycle. Ignition systems. Fuel used. Arrangement of cylinders. Cooling systems. Fuel supply systems.

4. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Basic Structure of I.C. Engines The components of I.C. Engine

5. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Stroke Length and Stroke Volume in an IC Engine Stroke length and stroke volume in I.C. engine

6. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Four-stroke Spark Ignition Engine All the four thermodynamic processes in four strokes SI engine

7. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Four Stroke Compression Ignition Engine All the thermodynamics processes in four strokes of engines

8. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Two-stroke Spark Ignition Engine Working of two stroke S.I. engine

9. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Two Stroke C.I. Engine Cut-section of two strokes C.I. engine

10. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Working of two strokes C.I. engine

11. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Comparison Between Four Strokes and Two Strokes Engines

12. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Comparison Between S.I. and C.I. Engines

13. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Otto Cycle

14. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Diesel Cycle

15. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Comparison Between Otto Cycle and Diesel Cycle

16. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Dual Cycle

17. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Valve Timing Diagram for Four Strokes S.I. Engines

18. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Port Timing Diagram for Two Strokes S.I. Engines

19. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Valve Timing Diagram for Four Strokes C.I. Engine

20. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Engine Performance Parameters Indicated Thermal Efficiency Brake Thermal Efficiency Mechanical Efficiency

21. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Volumetric Efficiency Relative Efficiency or Efficiency Ratio Mean Effective Pressure

22. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Mean Piston Speed Specific Power Output

23. Basic Mechanical Engineering, First Edition by Dr Pravin Kumar Copyright © 2013 Dorling Kindersley (India) Pvt. Ltd. Thank You.