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Gasoline Direct Injection

GDI. GDI. GDI. GDI. Gasoline Direct Injection. Presented by P.MEGHANA 09001A0317 M.MOUNIKA 09001A0331. THE WAY WE PROCEED. Introduction Advantages of Fuel Injection over Carburetor Electronic Fuel Injection Multi Point Fuel Injection Gasoline Direct Injection

jonah-clements
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Gasoline Direct Injection

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  1. GDI GDI GDI GDI Gasoline Direct Injection Presented by P.MEGHANA 09001A0317 M.MOUNIKA 09001A0331

  2. THE WAY WE PROCEED... • Introduction • Advantages of Fuel Injection over Carburetor • Electronic Fuel Injection • Multi Point Fuel Injection • Gasoline Direct Injection • The Difference Between New GDI And Current MPI • Technical features • Major characteristics of the GDI engine • Realization of lower fuel consumption • Vehicle Fuel Consumption • Realization of Superior Output • Achievements • Conclusion

  3. INTRODUCTION Port Injection (MPFI) Direct Injection (GDI) Carburetor Transition of Fuel Supply System

  4. ADVANTAGES OF FUEL INJECTION OVER CARBURETOR • Fuel injection has no choke, but sprays atomized fuel directly into the engine. • Electronic fuel injection also integrates more easily with computerized engine control systems. • Multi port fuel injection delivers a more evenly distributed mixture of air and fuel to each of the engine's cylinders. • Sequential fuel injection improves power and reduces emissions.

  5. Fuel Injectors • A fuel injector is nothing but an electronically controlled valve. • When the injector is energized, an electromagnet moves a plunger that opens the valve, allowing the pressurized fuel to squirt out through a tiny nozzle. • It is controlled by the ECU. • A pipe called the fuel rail supplies pressurized fuel to all of the injectors.

  6. ELECTRONIC FUEL INJECTION • Multipoint Fuel Injection • Gasoline Direct Injection

  7. MULTI POINT FUEL INJECTION SYSTEM • Have a separate fuel injector for each cylinder . • Have better cylinder to cylinder distribution. • Eliminate the need to preheat the intake manifold

  8. GASOLINE DIRECT INJECTION

  9. MAJOR CHARACTERISTICS OF THE GDI ENGINE • Lower fuel consumption and higher output • Ultra-lean Combustion Mode • Superior Output Mode

  10. ITEM GDI Conventional MPFI Bore x Stroke (mm) 81.0 x 89.0  Displacement 1834  Number of Cylinders IL-4  Number of Valves Intake: 2, Exhaust: 2  Compression Ratio 12.0 10.5 Combustion Chamber Curved Top Piston Flat top Piston Intake Port Upright Straight Standard Fuel System In-Cylinder Direct Injection Port Injection Fuel Pressure (MPa) 50 3.3 COMPARISON WITH MPFI

  11. BASIC TECHNICAL FEATURES OF GDI ENGINE

  12. In-cylinder Airflow • Fuel Spray • Optimized Configuration of the Combustion Chamber

  13. REALIZATION OF LOWER FUEL CONSUMPTION • Basic Concept • Combustion of Ultra-lean Mixture

  14. Vehicle Fuel Consumption • Fuel Consumption During Idling • Fuel Consumption during Cruising Drive

  15. Emission Control

  16. REALIZATION OF SUPERIOR OUTPUT • Improved Volumetric Efficiency • Increased Compression Ratio

  17. ACHIEVEMENTS • Engine performance • Vehicle Acceleration

  18. CONCLUSION • Frequent operation in stratified mode. • Reduction of CO2 production by nearly 20 percent. • Provides improved torque 5-10% • Fulfills future emissions requirements. • 97% NOx reduction is achieved. • Improve the brake specific fuel consumption. • Smooth transition between operation modes. • Reduced fuel consumption 15-20% • Up to 5% more power • Spontaneous response behavior

  19. Queries?

  20. Thank you

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