BONNICK, A. W. M. (2001). Automotive Computer Controlled Systems - Diagnostic Tools and Techniques.pdf

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AutomotiveComputer
ControlledSystems
AutomotiveComputer
ControlledSystems
Diagnostic tools and techniques
AllanW.M.Bonnick
MPhil CEng MIMechE MIRTE
OXFORD AUCKLAND BOSTON JOHANNESBURG MELBOURNE NEW DELHI
435294706.001.png
Butterworth-Heinemann
Linacre House, Jordan Hill, Oxford OX2 8DP
225 Wildwood Avenue, Woburn, MA 01801-2041
A division of Reed Educational and Professional Publishing Ltd
First published 2001
Allan Bonnick, 2001
All rights reserved. No part of this publication may be reproduced in
any material form (including photocopying or storing in any medium by
electronic means and whether or not transiently or incidentally to some
other use of this publication) without the written permission of the
copyright holder except in accordance with the provisions of the Copyright,
Designs and Patents Act 1988 or under the terms of a licence issued by the
Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London,
England W1P 0LP. Applications for the copyright holder’s written
permission to reproduce any part of this publication should be addressed
to the publishers
British Library Cataloguing in Publication Data
Bonnick, Allan W.M.
Automotive computer controlled systems: diagnostic tools
and techniques
1. Automotive computers
I. Title
629.2 0 549
ISBN 0 7506 5089 3
Library of Congress Cataloguing in Publication Data
Bonnick, Allan W.M.
Automotive computer controlled systems: diagnostic tools and techniques/Allan
W.M. Bonnick.
p.cm.
Includes index.
ISBN 0 7506 5089 3
1. Automotive computers. 2. Automobiles – Maintenance and repair. I. Title.
TL272.53 B66
629.2 0 7 – dc21
2001018080
Typeset in 11 / 13pt Garamond by Laser Words, Madras, India
PrintedandboundinGreatBritain
435294706.002.png
1 Common technology
..................................
1
.........................................
1.2 Engine-related systems
1
....................................
2
................................................
1.3.1 THE CONSTANT ENERGY IGNITION
SYSTEM
2
..................................................................
1.3.2 DIGITAL (PROGRAMMED) IGNITION
SYSTEM
2
..................................................................
1.3.3 DISTRIBUTORLESS IGNITION SYSTEM
3
......
1.3.4 OPTOELECTRONIC SENSING FOR THE
IGNITION SYSTEM
6
.................................................
1.3.5 KNOCK SENSING
8
..........................................
1.3.6 ADAPTIVE IGNITION
9
.....................................
1.4 Computer controlled petrol fuelling systems
9
.....
10
1.4.1 SINGLE-POINT INJECTION
...........................
11
.............................
1.5 Engine management systems (EMS)
13
...............
17
1.5.1 EXHAUST GAS RECIRCULATION
................
18
1.5.2 COMPUTER CONTROL OF
EVAPORATIVE EMISSIONS
...................................
19
....................................
1.6.1 OPERATION OF ABS
19
.....................................
1.6.2 SOME GENERAL POINTS ABOUT ABS
22
.......
22
1.7 Traction control
.................................................
22
1.8 Stability control
.................................................
25
.................................................
1.9.1 DEALING WITH AIR CONDITIONING
REFRIGERANT
27
.......................................................
1.10 Computer controlled damping rate
29
.................
30
............................................
1.11.1 SPILL CONTROL
30
..........................................
1.11.2 TIMING CONTROL
33
.......................................
1.11.3 IDLE SPEED CONTROL
35
..............................
35
1.12 Summary
........................................................
38
1.1 Common technology
1.3 Ignition systems
1.4.2 MULTI-POINT INJECTION
1.6 Anti-lock braking (ABS)
1.9 Air conditioning
1.11 Computer controlled diesel engine
management systems
1.13 Review questions
...........................................
38
....................................
2.1 The fundamental parts of a computer
2
...............
2
2.1.1 COMPUTER MEMORY
..................................
41
...................................................
2.2 A practical automotive computer system
41
..........
41
2.3 Principles of operation
......................................
44
..................................................
2.4.1 DATA TRANSFERS
45
........................................
2.4.2 DATA TRANSFER REQUIREMENTS
45
............
46
.........................................
2.6 Control of output devices
46
..................................
47
.........................................
2.7.1 READ ONLY MEMORIES
48
...............................
2.7.2 RANDOM ACCESS MEMORY
49
.......................
2.7.3 OTHER TYPES OF COMPUTER
MEMORY
50
.................................................................
2.8 Fault codes
50
.......................................................
2.9 Adaptive operating strategy of the ECM
51
...........
2.9.1 LIMITED OPERATING STRATEGY (LOS)
51
.....
52
................................
2.10.1 A BUS-BASED SYSTEM
52
..............................
2.10.2 STAR CONNECTED COMPUTERS
52
.............
52
..................................................
2.10.4 PROTOCOLS
53
...............................................
2.11 Vehicle network systems
54
................................
2.11.1 THE PRINCIPLE OF A BUS-BASED
VEHICLE SYSTEM
55
..................................................
2.11.2 DATA BUSES FOR DIFFERENT
APPLICATIONS
55
.......................................................
2.11.3 ENCODING SERIAL DATA
57
..........................
57
2.12 Prototype network systems
............................
59
........................................................
2.14 Review questions
62
...........................................
63
2 The Computer ECM
2.1.2 THE CLOCK
2.4 Computer data
2.5 Computer interfaces
2.7 Computer memories
2.10 Networking of computers
2.10.3 MESSAGES
2.13 Summary

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