DENSO ECD-V SERIES ENGINE MANAGEMENT SYSTEM

 DENSO ECD-V SERIES ENGINE MANAGEMENT SYSTEM

ECD-V Series Electronically Controlled Distributor Type Fuel Injection System

FOREWORD

To meet the pressing needs for the diesel engine to deliver cleaner exhaust gas emissions, lower

fuel consumption, and reduced noise, advances are being made in adopting electronic control in

its fuel injection system.

This manual covers the electronic control models ECD-V3, ECD-V3 (ROM), ECD-V4, and ECD-

V5 of the electronically controlled, distributor type fuel injection system, including actual examples.

Complex theories or special functions are omitted in this manual in order to focus on the descrip-

tion of the basic construction and operation. It has been compiled to serve as a reference material

for everyone who wishes to deepen their knowledge of the electronically controlled, distributor type

fuel injection system, whose application is increasing year after year.

TABLE OF CONTENTS

Introduction (Diesel Engine and Fuel Injection System) .............................. 1

Chapter 1 (ECD-V3) .................................................................................... 15

Chapter 2 (ECD-V5) .................................................................................... 63

Chapter 3 (ECD-V4) .................................................................................... 87

Introduction - Table of Contents

1. Diesel Engine .............................................................................................. 3

1-1. Comparison to Gasoline Engine .................................................................................... 3

1-2. Diesel Engine Operation ............................................................................................... 4

1-3. Diesel Engine’s Combustion Process............................................................................ 5

1-4. Diesel Knock ................................................................................................................. 6

1-5. Combustion Chamber ................................................................................................... 6

1-6. Fuel ............................................................................................................................... 7

1-7. Exhaust Smoke ............................................................................................................. 9

1-8. Diesel Engine Performance .......................................................................................... 10

2. Fuel Injection System ............................................................................... 12

2-1. Fuel Injection System Composition ............................................................................... 12

2-2. Electronically Controlled Fuel Injection System .............................................................. 13