This document discusses compression ignition engines and covers the following topics: the stages of combustion in CI engines including the ignition delay period, period of rapid combustion, and period of controlled combustion; factors that affect knocking; direct and indirect injection systems; different types of combustion chambers; and turbocharging of single cylinder and V-type engines.

1. COMPRESSION IGNITION ENGINES
Stages of combustion-normal and abnormal combustion – Factors
affecting knock, Direct and Indirect injection systems, Combustion
chambers, Turbo charging, Introduction to Thermodynamic Analysis
of CI Engine Combustion process.

2. Stages of combustion

3. Stages of combustion
1. Ignition Delay Period

4. Stages of combustion
1. Ignition Delay Period

5. Stages of combustion
2. Period of rapid Combustion

6. Stages of combustion
3. Period of Controlled Combustion
4. Period of After Burning

7. Knocking in CI Engine

8. Knocking in SI and CI Engine

9. Normal Combustion
Under ideal conditions the common internal combustion engine burns
the fuel/air mixture in the cylinder in an orderly and controlled fashion.

10. Abnormal Combustion

11. Factors affecting Delay period

12. Factors affecting Delay period

13. Factors affecting Delay period

14. Factors affecting Delay period

15. Factors affecting Delay period

16. Reducing Knocking in SI and CI engine

17. Combustion Chamber in CI engine
1. Direct Injection type
2. Indirect Injection type
1. Direct Injection Type.
• Shallow depth Chamber
• Hemispherical Chamber
• Cylindrical Chamber
• Toroidal Chamber

18. Direct Injection Type
Shallow depth Chamber Hemispherical Chamber

19. Direct Injection Type
Cylindrical Chamber Toroidal Chamber

20. 2. Indirect Injection Type.

21. Indirect Injection Type
1. Swirl Chamber

22. Indirect Injection Type
2. Precombustion Chamber

23. Indirect Injection Type
3. Air-Cell Combustion Chamber

24. Turbo charging
1. Exhaust Turbo charging of Single cylinder engine.

25. Turbo charging
2. Exhaust Turbo charging of a V type engine.