Requirements of injection system, Types of injection systems – Individual pump, Common rail and Distributor systems, Unit injector, Types of fuel nozzles- single hole, multi hole, pintle, and pintaux, Electronic diesel injection system.

1. Fuel Systems for
C.I. Engines

2. Why Fuel Systems for
C.I. Engines is different than Petrol
• Burning Process
• Fuel Characters
• Mixture Strengths (A:F)
• Fuel Governing

3. Fuel System Layout

4. Sharp Starting and Stopping of Inection
Engine Fuel Requirements
Supply fuel for defined period
Atomize Fuel in Fine Spray
Controlled rate of Injection
Uniform distribution of fuel in combustion chamber
Supply Correct Quantity of Fuel as per Load and Speed of Engine

5. Requirement of an Ideal Injection System
Atomization
Orifice Diameter
Rate of Injection
Injection Pressure
Air density
Factors Affecting Atomization

6. Requirement of an Ideal Injection System
Penetration
Fuel Density
Injection Pressure
Air density
Factors Affecting Penetration
Type of Nozzle

7. Requirement of an Ideal Injection System
Dispersion
Air Turbulence
Factors Affecting Dispersion
Type of Nozzle

8. Requirement of an Ideal Injection System
Turbulence
Design of Intake Valve
Factors Affecting Turbulence
Combustion Space
Design of Piston Head

9. Types of Injection System
Fuel Injection
Solid Injection
Common Rail
Unit Injector
Individual Pump Distributor
Air Injection

10. Air Injection System

11. Individual Pump

12. Unit Injector System

13. Common Rail Injector System

14. Distributor Injector System

15. Fuel Feed Pump
Layout

16. Jerk Type Fuel Pump

17. Fuel Injector

18. Fuel Nozzle

19. Types of Nozzle
Single Hole Multi Hole
Pintle
Pintaux