
MBE4000 APPLICATION AND INSTALLATION
6.3 EGR CONTROL VALVES ............................................................................................... 6- 5
6.4 REED VALVES ................................................................................................................ 6- 5
6.5 EGR MIXER .................................................................................................................... 6- 5
7 COOLING SYSTEM ........................................................................................................... 7- 1
7.1 COOLING SYSTEM DESCRIPTION .............................................................................. 7- 3
7.2 JACKET WATER COOLING SYSTEM ........................................................................... 7- 3
7.3 THERMOSTAT ................................................................................................................ 7- 7
7.3.1 ENGINE VENTING .................................................................................................... 7- 8
7.4 WATER PUMP ............................................................................................................... 7- 8
7.5 TYPES OF COOLING SYSTEMS ................................................................................... 7- 8
7.5.1 RAPID WARM-UP COOLING SYSTEM .................................................................... 7- 8
7.5.2 CONVENTIONAL COOLING SYSTEM ...................................................................... 7-10
7.5.3 AUXILIARY AIR-COOLED COOLER CORES ............................................................ 7-10
7.5.4 COOLANT HEATERS ................................................................................................. 7-10
7.6 AIR-TO-AIR CHARGE COOLING ................................................................................... 7-11
7.6.1 CHARGE AIR COOLER ............................................................................................. 7-12
7.7 COOLING SYSTEM PERFORMANCE REQUIREMENTS ............................................. 7-13
7.7.1 SYSTEM FILL ............................................................................................................. 7-13
7.7.2 SYSTEM DRAIN ......................................................................................................... 7-13
7.7.3 DEAERATION ............................................................................................................. 7-13
7.7.4 SYSTEM COOLANT CAPACITY ................................................................................ 7-14
7.7.5 DRAWDOWN CAPACITY ........................................................................................... 7-15
7.7.6 CORE CONSTRUCTION ........................................................................................... 7-15
7.7.7 WATER PUMP INLET PRESSURE/MAXIMUM STATIC HEAD ................................. 7-15
7.7.8 COOLANT FLOW RATE/EXTERNAL PRESSURE DROP ........................................ 7-15
7.7.9 MINIMUM COOLANT TEMPERATURE ..................................................................... 7-16
7.7.10 SYSTEM PRESSURIZATION ..................................................................................... 7-16
7.7.11 COOLANTS ................................................................................................................ 7-16
7.8 CHARGE AIR COOLING REQUIREMENTS .................................................................. 7-16
7.8.1 COOLING CAPABILITY .............................................................................................. 7-16
7.8.2 MAXIMUM PRESSURE LOSS ................................................................................... 7-16
7.8.3 CLEANLINESS ........................................................................................................... 7-17
7.8.4 LEAKAGE ................................................................................................................... 7-17
7.9 END PRODUCT QUESTIONNAIRE ............................................................................... 7-17
7.10 COOLING SYSTEM DESIGN CONSIDERATIONS ........................................................ 7-17
7.10.1 COOLING SYSTEM REQUIREMENTS ..................................................................... 7-17
ENGINE OPERATING TEMPERATURE .............................................................. 7-17
7.10.2 ENGINE PERFORMANCE ......................................................................................... 7-18
ENGINE HEAT REJECTION ................................................................................ 7-18
COOLANT FLOW ................................................................................................. 7-18
HEAT TRANSFER CAPABILITIES ....................................................................... 7-18
7.10.3 ENVIRONMENTAL AND OPERATING CONDITIONS ............................................... 7-19
AMBIENT TEMPERATURE .................................................................................. 7-19
ALTITUDE ............................................................................................................. 7-20
SPACE CONSTRAINTS ....................................................................................... 7-20
NOISE LIMITS ...................................................................................................... 7-20
All information subject to change without notice. (Rev. 03/06) v
7SA250 0603 Copyright © 2006 DETROIT DIESEL CORPORATION