Mercedes-Benz OM 471 Reference manual

Introduction of engine OM 471 and
exhaust aftertreatment
Introduction into Service Manual
Daimler AG, GSP/OI, HPC R 822, D-70546 Stuttgart
Bestell-Nr. 6517 1260 02 - HLI 000 000 02 82 – Printed in Germany – 09/11
Introduction of engine OM 471 and
exhaust aftertreatment
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Mercedes>Benz Service
Introduction of engine OM 471 and
exhaust aftertreatment
Technical status
01.09.2011
Daimler AG
.
Technical Information and Workshop Equipment(GSP/OI)
D$70546 Stuttgart
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Information and copyright
Product portfolio
You can also find comprehensive information about our
complete product portfolio on our Internet portal:
Link: http://aftersales.mercedes>benz.com
Questions and suggestions
If you have any questions or suggestions concerning this product, please write
to us.
E>Mail: [email protected]
Telefax: +49>(0)18 05/0 10>79 78
or alternatively
Address: Daimler AG
GSP/OIS,
HPC R822, W002
D>70546 Stuttgart
(Germany)
©2011 by Daimler AG
This document, including all its parts, is protected by copyright.
Any further processing or use requires the previous written consent of
Daimler AG, Department GSP/OIS, HPC R822, W002, D>70546 Stuttgart.
This applies in particular to reproduction, distribution, alteration, translation,
microfilming and storage and/or processing in electronic systems, including
databases and online services.
Image no. of title image: W00.01>1015>00
Order no. of this publication: 6517 1260 02 >HLI 000 000 02 82
09/11
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Preface
SN00.00>W>0001>01HD Preface
The intention behind this brochure is to introduce you to the new
6>cylinder inline diesel engine OM 471 along with the new
exhaust aftertreatment system (EATS).
This brochure is intended for the technical personnel entrusted
with the maintenance and repair of Mercedes>Benz trucks.
The content of this brochure is split up into:
• as>built configuration descriptions
• function descriptions
• component descriptions
All the data listed in this brochure correspond with the technical
status as per September 2011.
Any changes or supplements hereto will be published in the
Workshop Information System (WIS) only.
Additional documents for the OM 471 engine and the EATS, such
as maintenance and repair instructions or wiring diagrams are
also available in the Workshop Information System (WIS).
Mercedes>Benz
W‘rth plant, GSP/TTM
September 2011
i Introduction of engine OM 471 and exhaust aftertreatment >09/2011 > 1
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Contents
2
SN00.00>W>0110HA Overview of as>built configuration and function descriptions 2.8.11
ENGINES 471.9
Overview of new features
Engine OM!471 Page 10
Technical data of diesel engine OM 471 Page 11
As>built configuration
descriptions
Cylinder head cover, as>built configuration Page 12
Cylinder head, as>built configuration Page 13
Cylinder head gasket, as>built configuration Page 18
Crankcase as>built configuration Page 19
Connecting rod, as>built configuration Page 21
Piston, as>built configuration Page 22
Crankshaft, as>built configuration Page 23
Valve control; as>built configuration Page 24
Gear drive, as>built configuration Page 29
Camshaft, as>built configuration Page 31
Belt drive, as>built configuration Page 32
Function descriptions
Crankcase ventilation system function Page 34
Charging, function Page 35
Engine management, function Page 37
Engine management, overall network Page 39
Engine management, behavior in the event
of malfunctions
Page 40
Start procedure, function Page 42
Idle speed control, function Page 44
Working speed control, function Page 46
Driving, function Page 48
Engine shutoff procedure, function Page 50
Determination of the engine speed and
crankshaft angle, function
Page 53
Determination of the compression stroke at
cylinder 1, function
Page 54
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Contents
i Introduction of engine OM 471 and exhaust aftertreatment >09/2011 > 3
Determination of coolant temperature,
function
Page 55
Determination of air mass, function Page 56
Determination of the fuel temperature,
function
Page 57
Function of the specified engine torque
calculation
Page 58
Engine brake, function Page 60
Exhaust gas recirculation, function Page 66
Exhaust aftertreatment, function Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 68
Vehicles with code (M5Z) Engine version
Euro VI
Page 73
Exhaust aftertreatment, overall network Page 79
Engine oil circuit, function Page 80
Engine oil circuit, diagram Page 82
Coolant circuit, function Page 83
Coolant circuit, diagram Page 86
Engine cooling thermal management,
function
iOnly in vehicles with code (M7T)
Coolant pump, controlled.
Page 87
Engine cooling thermal management,
overall network
Page 90
Fuel supply, function Page 91
Fuel low pressure circuit function Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 93
Vehicles with code (M5Z) Engine version
Euro VI
Page 96
Fuel high pressure circuit function Page 100
Component descriptions
Central gateway control unit (CGW),
component description
A2 Page 101
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Contents
4
Component description drive control (CPC)
control unit
A3 Page 102
Component description for engine
management (MCM) control unit
A4 Page 103
Electronic Brake Control control unit (EBS),
component description
A10b, A10c Page 105
Parameterizable special module (PSM)
control unit component description
A22 Page 106
Battery disconnect switch control unit,
component description
A33
iOnly in vehicles with one of the
following codes:
• Code (E5T) ADR model class EX/II,
including AT
• Code (E5U) ADR model class EX/III,
including EX/II and AT
• Code (E5V) ADR model class FL,
including EX/II, EX/III and AT
• Code (E5X) ADR model class AT
• Code (E5Z) Accessories, ADR
• Code (E9D) Preinstallation, for bipolar
battery disconnect switch
• Code (E9E) ADR preinstallation, without
chassis shielding
Page 107
Radiator shutters, component description A54, A55
iOnly in vehicles with code (M7K)
Radiator shutters.
Page 109
EATU output NOx sensor, component
description
A57, A57 b1
Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 110
Vehicles with code (M5Z) Engine version
Euro VI
Page 112
Pump module, component description A58, M25 Page 115
Exhaust aftertreatment (ACM) control unit,
component description
A60
Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 117
Vehicles with code (M5Z) Engine version
Euro VI
Page 119
AdBlue metering device, component
description
A67 Page 121
EATU input NOx sensor, component
description
A70, A70 b1
Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 123
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Contents
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Vehicles with code (M5Z) Engine version
Euro VI
Page 125
Auxiliary heater heating unit, component
description
A901
iOnly in vehicles with code (D6M)
Auxiliary water heater, cab or code (D6N)
Auxiliary water heater, cab and electric
motor.
Page 128
Auxiliary heater coolant circulation pump,
component description
A901 M2
iOnly in vehicles with code (D6M)
Auxiliary water heater, cab or code (D6N)
Auxiliary water heater, cab and electric
motor.
Page 130
Travel and speed sensor, component
description
B18 Page 131
Exhaust pressure sensor upstream of diesel
oxidation catalytic converter, component
description
B37
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 132
Exhaust pressure sensor downstream of
diesel particulate filter, component
description
B38
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 133
Component description for accelerator
pedal sensor
B44 Page 134
Exhaust temperature sensor upstream of
diesel oxidation catalytic converter,
component description
B67
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 135
Exhaust temperature sensor downstream of
diesel oxidation catalytic converter, top,
component description
B68
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 136
Exhaust temperature sensor downstream of
diesel oxidation catalytic converter, bottom,
component description
B69
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 137
Exhaust temperature sensor downstream of
diesel particulate filter, component
description
B70
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 138
Exhaust temperature sensor upstream of
SCR catalytic converter, component
description
B72
iOnly in vehicles with code (M5R) Engine
version EEV and in vehicles with code
(M5Y) Engine version Euro V.
Page 139
Exhaust temperature sensor downstream of
SCR catalytic converter, component
description
B73
Vehicles with code (M5R) Engine version
EEV and vehicles with code (M5Y) Engine
version Euro V
Page 140
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Contents
6
Vehicles with code (M5Z) Engine version
Euro VI
Page 141
AdBlue fill level sensor/temperature sensor,
component description
B74 Page 142
Coolant pressure control sensor, component
description
B87
iOnly in vehicles with code (B3H)
Secondary water retarder.
Page 144
Component description for crankshaft
position sensor
B600 Page 145
Component description for camshaft
position sensor
B601 Page 146
Component description for fuel
temperature sensor
B602 Page 147
Oil pressure sensor, description of
components
B604 Page 148
Component description for engine oil fill
level sensor
B605 Page 149
Component description for exhaust coolant
temperature sensor
B606 Page 150
Component description for intake coolant
temperature sensor
B607 Page 151
Charge air pressure and temperature sensor
in charge air pipe, component description
B608 Page 152
Turbine wheel rpm sensor, component
description
B610
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 153
Component description for temperature
sensor downstream of air filter
B611
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 154
Charge air temperature sensor in charge air
housing, component description
B617 Page 155
Exhaust gas recirculation differential
pressure sensor, component description
B621 Page 156
Component description for rail pressure
sensor
B622 Page 157
Diesel fuel metering device, component
description
B625, B626, Y628, Y629
iOnly for vehicles with code (M5Z)
Engine version Euro VI.
Page 158
Fuel filter module pressure sensor,
component description
B638 Page 159
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i Introduction of engine OM 471 and exhaust aftertreatment >09/2011 > 7
Component description for coolant pump B640, Y631
iOnly in vehicles with code (M7T)
Coolant pump, controlled.
No component description was created for
vehicles with a rigid coolant pump.
Page 160
Residual heat pump, component description M20
iOnly in vehicles with code (D6I)
Residual heat utilization.
Page 162
Tachograph (TCO) component description P1 Page 163
Electronic ignition lock (EIS), component
description
S1 Page 164
EMERGENCY OFF switch, component
description
S30
iOnly in vehicles with one of the
following codes:
• Code (E5T) ADR model class EX/II,
including AT
• Code (E5U) ADR model class EX/III,
including EX/II and AT
• Code (E5V) ADR model class FL,
including EX/II, EX/III and AT
• Code (E5X) ADR model class AT
• Code (E5Z) Accessories, ADR
• Code (E9D) Preinstallation, for bipolar
battery disconnect switch
• Code (E9E) ADR preinstallation, without
chassis shielding
Page 165
EMERGENCY OFF switch frame, component
description
S31
iOnly in vehicles with one of the
following codes:
• Code (E5T) ADR model class EX/II,
including AT
• Code (E5U) ADR model class EX/III,
including EX/II and AT
• Code (E5V) ADR model class FL,
including EX/II, EX/III and AT
• Code (E5X) ADR model class AT
• Code (E5Z) Accessories, ADR
• Code (E9D) Preinstallation, for bipolar
battery disconnect switch
• Code (E9E) ADR preinstallation, without
chassis shielding
Page 166
Engine start and engine stop button,
component description
S600 Page 167
Heating shutoff valve, component
description
Y49 Page 168
Coolant pressure control solenoid valve,
component description
Y53
iOnly in vehicles with code (B3H)
Secondary water retarder.
Page 169
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