Gasoline Direct Injection - PowerPoint PPT Presentation

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Gasoline Direct Injection

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GDI GDI Gasoline Direct Injection Introduction Advantages of Fuel Injection over Carburetor Main Components of Electronic Fuel Injection Electronic Fuel Injection ... – PowerPoint PPT presentation

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Title: Gasoline Direct Injection


1
GDI
GDI
GDI
Gasoline Direct Injection

2
THE WAY WE PROCEED...
  • Introduction
  • Advantages of Fuel Injection over Carburetor
  • Main Components of Electronic Fuel Injection
  • 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

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
MAIN COMPONENTS OF ELECTRONIC FUEL INJECTION
  • Engine Control Unit
  • Sensors
  • 3. Fuel Injectors

Engine Control Unit (ECU)
  • ECU is a computer that controls all of the
    electronic
    components on the engine.

6
Sensors
  • In order to provide the correct amount of fuel
    for every operating condition, the ECU has to
    monitor a huge number of input sensors.

7
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.

8
ELECTRONIC FUEL INJECTION
  1. Multipoint Fuel Injection
  2. Gasoline Direct Injection

9
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

10
GASOLINE DIRECT INJECTION
11
COMPARISON WITH MPFI
12
BASIC TECHNICAL FEATURES OF GDI ENGINE
  • The Upright Straight Intake Port.
  • The Curved-top Piston.
  • The High Pressure Fuel Pump.
  • The High Pressure Swirl Injector.

13
MAJOR CHARACTERISTICS OF THE GDI ENGINE
  • Lower fuel consumption and higher output
  • Ultra-lean Combustion Mode
  • Superior Output Mode

14
  • In-cylinder Airflow

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  • Fuel Spray

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  • Optimized Configuration of the Combustion Chamber

15
REALIZATION OF LOWER FUEL CONSUMPTION
  • Basic Concept

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  • Combustion of Ultra-lean Mixture

16
Vehicle Fuel Consumption
  • Fuel Consumption During Idling
  • Fuel Consumption during Cruising Drive

17
  • Emission Control

18
REALIZATION OF SUPERIOR OUTPUT
  • Improved Volumetric Efficiency
  • Increased Compression Ratio

19
ACHIEVEMENTS
  • Engine performance
  • Vehicle Acceleration

20
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

21
THANK YOU
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