CHARLES O.PROBST
Table of Contents
Chapter One: Bosch Fuel Injection-An Overview
1. Introduction
2. Fuel Injection is Here
3. Fuel Injection Types
4. Engine Management
5. Bosch Jetronic Family Tree
6. Applications
Chapter Two: Engine Management Fundamentals
1. Introduction
2. Basic Factors
3. Operating Conditions and Driveability
4. Emission Control
5. Control Systems
Chapter Three: Pulsed Injection-Theory
1. Introduction
2. L-Jetronic
3. LH-Jetronic
4. Motronic
5. D-Jetronic
6. Digifant II
Chapter Four: Pulsed Injection-Troubleshooting and Service
1. Introduction
2. Troubleshooting
3. Fuel Supply
4. Start and Warm-up Testing
5. Air-Flow Measurement
6. Idle Speed
7. Mixture and Lambda Control
8. Motronic Timing and Dwell
Chapter Five: Continuous Injection-Theory
1. Introduction
2. Air-Flow System
3. Fuel System
4. Fuel Metering
5. Control Systems, Vensations
7. KE3-Jetronic and KE-Motronic
Chapter Six: Continuous Injection-Troubleshooting & Service
1. Introduction
2. Troubleshooting
3. Air-Flow Measurement
4. Fuel Supply
5. Control Systems (K-Basic, K-Lambda)
6. Control Systems (KE-Systems)
7. Idle RPM and Mixture
8. Start Auxiliaries
Chapter Seven: Tuning for Performance and Economy
1. Introduction
2. The Legal Issues
3. Driveability
4. High Performance Basics
5. System Basics
6. Air Flow Improvements
7. Knock Sensor
8. Tricks
9. Racing Applications
10. Radical Injection Systems
11. Suppliers
A
Absolute pressure definition 2:8
Acceleration
air-fuel requirements
general 2:13
continuous injection 5:31
D-Jetronic 3:40
effects of ignition timing on
general 2:13
L-Jetronic 3:19
Actuator current
KE3-Jetronic and KE-Motronic 5:35
Actuator current, pressures, and air-fuel ratios 5:27
Adaptive control
KE-Motronic 5:35
LH-Jetronic 3:27
Motronic 3:33
AIR, Air injection reaction 2:17
Air and fuel systems Motronic systems 3:31
Air flow and volumetric efficiency 7:6
Air-flow. fuel delivery, and engine load, general 2:6
Air-flow improvements
continuous injection systems 7:16
pulsed injection systems 7:17
Air-flow measurement continuous injection 6:6
pulsed injection 4:16
Air flow measurement and fuel metering
continuous injection 5:3
pulsed injection 3:3
Air-flow sensor, continuous injection
design and operation 5:7
testing 6:6
pulsed injection
design and operation 3:6
electrical tests 4:17
mixture adjustment 3:6
recalibrating 7:13
vane movement, checking 4:16
Air-flow system
continuous injection 5:6
L-Jetronic 3:6
LH-Jetronic 3:23
Motronic 3:31
Air-fuel mixture,
continuous injection 6:31
K-Basic 6:31
K-Lambda 6:32
KE systems 6:32
pulsed injection 4:10
adjustment 4:20
L-Jetronic with lambda control,
Motronics 4:21
L-Jetronic without lambda control 4:21
Air-fuel mixtures
overview 1:3
Air-fuel ratios
altering 7:4
and performance 7:7
basic combustible mixture 2:3
fuel consumption,
effect on 2:5
lambda 2:5
pollutants, effect on 2:6, 16
power, effect on 2:4, 5
rich and lean mixtures 2:4
stoichiometric ratio 2:4
volume ratio 2:3
Air-mass sensor, LH-Jetronic
control circuitry 3:24
control unit inputs and outputs 3:25
design and operation 3:24
hot-wire cleaning 3:24
mixture adjustment 3:25
shut-off 3:24
Air-mass sensor, testing burn-off sequence 4:18
visual inspection 4:18
voltage input 4:17
voltage output 4:17
Air-shrouded injectors 5:14
Alfa cars with Bosch fuel injection 1:13
Altitude compensation for,
continuous injection 5:33
effect on air-fuel ratio 2:14
AMC cars with Bosch fuel injection 1:13
Anti-search circuitry L-Jetronic 3:21
Applications table 1:13
Auxiliary air valve 3:18
test
continuous injection 6:34
pulsed injection 4:19
B
Backfire protection,
continuous injection 5:9
Bar, definition 2:8
Basic flow rate,
pulsed injection 3:6
Motronic systems 3:31
operating conditions and 3:15
RPM signal and 3:13
Bertone cars with Bosch fuel injection 1: 13
BMW cars with Bosch fuel injection 1:12,13
Bosch Fuel injection an overview 1:3
Bosch-licensed systems Lucas 1:9
Volkswagen digifant 1:9
Volkswagen digifant II 1:9
Burn-off sequence
(see air-mass sensor, testing)
C
CAFE (Corporate Average Fuel Economy) standards 2:6
Carbon monoxide (CO) formation of 2:15
Carburetors
general description 1:4
Catalytic converters 2:17
three-way catalyst 2:17
Clogged fuel injectors, continuous injection 6:13
pulsed injection
causes of 4:13
solving the problem 4:14
Closed-loop control systems 2:18
response to changing engine
conditions 2:19
Closed-loop operation K-Lambda systems 5:23
KE systems 5:33 L-Jetronic systems 3:22
Motronic systems 3:36
CO (carbon monoxide) formation of 2:15
Coasting cut-off KE systems 6:28
L-Jetronic 3:21 Motronic systems 3:38
Cold acceleration KE systems 6:27
L-Jetronic 3:20 Motronic systems 3:36 C
old idle
air-fuel requirements 2:12
Cold start
air-fuel requirements 2:10
EPA (environmental protection agency) definition 2:10
Cold-start injector
theory of operation 3:17
tests
continuous injection 6:34
pulsed injection 4:15
Cold starting
continuous injection 5:31
L-Jetronic 3:16
Motronic systems 3:35
Combustion by-products carbon monoxide (CO) 2:15
hydrocarbons (HC) 2:15
oxides of nitrogen (NO.) 2:15
Contamination test continuous injection 6:13
Continuous injection general description 5:3
theory 5:3
Continuous injection system (CIS) 5:3
an overview 1:6
K-Jetronic 1:9
K-Jetronic with Lambda control 1:9
KE-Jetronic 1:9
applications-identifying
features 5:5
introduction 6:3
load-sensitive enrichment 7:11
mixture adjustments 7:10
mixture-control unit 5:3
mixture enrichment 7:11
troubleshooting and service 6:3
tuning for performance and economy 7:10
Control plunger and sensor plate 5:7
Control plunger
continuous injection
cleaning 6:8
seal clearance, KE systems 6:10
Control-plunger counterforce 5:8
Control plunger movement and slit size 5:15
Control pressure 5:18
additional compensations 5:21
testing 6:18
throughflow 6:12
Control pressure and mixture adjustment 5:20
Control-pressure regulator 5:18
continuous injection 6:15
Control relay
L-Jetronic 3:15
Control systems, an overview closed-loop 2:18
lambda sensor 2:18
open-loop 2:18
Control systems
continuous injection 5:18
K-Basic, K-Lambda 6:15
KE systems 6:23
summary K-Basic, K-Lambda, KE 5:29
Control unit and sensors
KE systems 5:26
Control unit
L-Jetronic 3:11 analog/digital 3:14
connectors 3:14
inputs and outputs 3:12
Control unit
Motronic systems 3:31
Conversion table
pressure values 2:8
Corporate Average Fuel Economy
(CAFE) standards 2:6
D
D-Jetronic
theory of operation 3:39
Data "maps"
Motronic systems 3:31
Deceleration and coasting
effects of ignition timing on 2:14
fuel conservation measures 2:13
Decelera
This is the authoritative handbook on Bosch Fuel Injection and Engine Management Systems. This is the only manual that fully explains aspects of the most widely installed Bosch systems, including specific technical information on the newest KE-Motronic and LH-Motronic systems that is not available from any other source. Bosch Systems covered: Motronic, LH-Motronic, L-Jetronic, LH-Jetronic, KE-Jetronic, KE-Motronic, K-Jetronic & D-Jetronic. Author Charles Probst has worked directly with factory engineers and technicians from Bosch, Porsche, BMW, Mercedes-Benz, Volkswagen, Audi, and other manufacturers to produce down-to-earth but detailed technical literature for real-world technicians. Now complete service and maintenance procedures, with Chuck's expert advice and troubleshooting tips, are available to you. Chuck clarifies advantages and operating principles of each Bosch system and explains how they work. He also gives you high performance tuning secrets that really work for street and racing applications, and tells you why some tricks, like fooling the computer, don't. With over 350 illustrations and photos, this 224-page book is a must-have reference for do it yourself mechanics, performance enthusiasts, and professional technicians who want to understand Bosch systems. Features: Fuel Injection Training & Theory: How each system works. Engine Management Systems: How they differ from Fuel Injection Systems. How to troubleshoot problems and service each subsystem. Tools and equipment are needed. How to adjust and control engine idle speed. How to adjust air-fuel mixture. How engine management systems adjust timing for gasoline octane and turbo boost. Racing and high performance modifications: what works and what doesn't.
