Table of contents

Page No

Abstract i

List Of Figures ii

Notations iii

1.0 Introduction ………………………………………………………………………………1

2.0 Fuel Supply System……………………………………………………………………….1

2.1 Carburetor System ………………………………………………………………… 1

2.2 Fuel Injection …………………………………………………………………….…2

2.2.1 Multi Point Fuel Injection System………………………………………… 2

2.2.2 Gasoline Direct Injection ………………………………………………… 4

2.2.3 Electronic Fuel Injection………………………….………………………….5

3.0 Characteristics Of GDI and MPFI…………………………………………………….......5

3.1 Lower Fuel Consumption Mode…………………………………………………....5

3.2 Superior Output Mode ………………………………………………………………6

4.0 Camparison Between GDI And MPFI Engines…………………………………………...7

4.1 Variation Of Fuel Economy With Air Fuel Ratio…………………………………..7

4.2 Variation Of Cylinder Pressure And Rate Of Heat………………………………...7

4.3 Variation In Torque And Fuel Consumption……………………………………….8

4.4 Comparison Of Emissions…………………………………………………………..8

4.5 Variation Of Volumetric Efficiency And Fuel Consumption With Speed………....9

5.0 Conclusions……………………………………………………………………………...10

References……………………………………………………………………………….11