2. 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
THE WAY WE PROCEED...
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.
6. MULTI POINT FUEL INJECTION SYSTEMMULTI POINT FUEL INJECTION SYSTEM
Have a separate fuel injector for each cylinder .Have a separate fuel injector for each cylinder .
Have better cylinder to cylinder distribution.Have better cylinder to cylinder distribution.
Eliminate the need to preheat the intake manifoldEliminate the need to preheat the intake manifold
11. COMPARISON WITH MPFI
3.350Fuel Pressure (MPa)
Port InjectionIn-Cylinder Direct InjectionFuel System
StandardUpright StraightIntake Port
Flat top PistonCurved Top PistonCombustion Chamber
10.512.0Compression Ratio
Intake: 2, Exhaust: 2Number of Valves
IL-4Number of Cylinders
1834Displacement
81.0 x 89.0Bore x Stroke (mm)
Conventional MPFIGDIITEM
16. CONCLUSION
As the GDI technology proved to be efficient in
terms of fuel consumption and controlled
emissions, the SI engines in near future will
adopt this.
The limitations for this technology being, initial
cost of the system, increased service problem as
it has many wearing parts and they generate
more noise. Over coming the above drawbacks
in near future one can see GDI SI Engines on
roads.