Delphi Multec 3.5 User Manual

Multec 3.5 Fuel Injector Application Manual Table of Contents
Delphi Energy and Chassis Systems
Revision: 11/05-1 i
Table of Contents
1. 0 INTRODUCTION ................................................................................1-1
1.1 SCOPE OF DOCUMENT .....................................................................................................................1-1
1.2 CLASSIFICATION ..............................................................................................................................1-1
1.3 DOCUMENT MANAGEMENT ...............................................................................................................1-1
1.3.1 Document Release and Updates .........................................................................................1-1
1.4 COMMERCIAL CONSIDERATIONS .......................................................................................................1-1
1.5 OBJECTIVES OF THIS MANUAL ..........................................................................................................1-1
1.6 HOW THIS MANUAL IS ARRANGED.....................................................................................................1-2
1.7 CONVENTIONS USED IN THIS MANUAL...............................................................................................1-4
1.8 HYPERLINKS....................................................................................................................................1-5
1.9 APPLICABLE DOCUMENTS ................................................................................................................1-5
1.9.1 Order of Precedence ............................................................................................................1-5
1.9.2 Government Documents ......................................................................................................1-5
1.9.3 Other Delphi Reference Documents ....................................................................................1-5
1.9.4 Industry Documents .............................................................................................................1-6
1.9.5 Useful Web Sites..................................................................................................................1-6
2. 0 FUNDAMENTALS.............................................................................. 2-1
2.1 GENERAL ........................................................................................................................................2-1
2.2 ENGINE COMBUSTION FUNDAMENTALS .............................................................................................2-2
2.2.1 Air/Fuel Ratio Effects on Combustion ..................................................................................2-3
2.2.2 Fuel Atomization...................................................................................................................2-7
2.2.3 Fuel Spray Characteristics and Injection Timing..................................................................2-8
2.2.4 Benefits of Electronic Fuel Injection Over Other Types of Fuel Systems ............................2-9
2.2.5 Impact of Transient Conditions on Combustion ...................................................................2-9
2.2.6 Impact of Fuel Composition................................................................................................2-10
2.2.7 Engine-Vehicle Environment..............................................................................................2-14
2.2.8 Maximum Power Fueling Requirements ............................................................................2-19
2.2.9 Injector Flow Tolerances ....................................................................................................2-20
2.3 FUEL FLOW CONSIDERATIONS........................................................................................................2-20
2.3.1 Minimum Fuel Pump Flow Output......................................................................................2-21
2.3.2 Nominal Fuel Pump Output ................................................................................................ 2-21
2.3.3 Fuel Pump Check Valve Requirements .............................................................................2-22
2.3.4 Pressure Regulator Gain/Considerations (Vacuum Biased)..............................................2-22
2.4 IMPACT OF EMISSIONS REQUIREMENTS .......................................................................................... 2-23
2.4.1 The Impact of Emission Requirements on Fuel Control Systems .....................................2-23
2.4.2 Fuel Injector Design Effects on Evaporative Emissions.....................................................2-25
2.4.3 Impact of Canister Purge on Engine Fueling .....................................................................2-26
2.4.4 Impact of EGR and PCV on engine fueling........................................................................2-27
2.4.5 Injector Flow Characterization............................................................................................2-27
3. 0 PRODUCT DESCRIPTION.................................................................3-1
3.1 SCOPE............................................................................................................................................3-1
3.2 GENERAL DESCRIPTION ................................................................................................................... 3-1
3.2.1 Appearance ..........................................................................................................................3-3
3.2.2 Exterior Outline.....................................................................................................................3-3

Delphi Multec 3.5 Specifications

General

Brand	Delphi
Model	Multec 3.5
Category	Laboratory Equipment
Language	English