AIR INLET SYSTEM
4.4.3
MAXIMUM TEMPERATURE RISE–AMBIENT TO TURBOCHARGER
INLET
The temperature differential between the ambient temperature and the temperature at the
turbocharger inlet (T
1
) needs to be determined.
The maximum temperature differential for the MBE4000 engine can be found in the “Technical
Data” section of this manual (refer to section 14).
4.4.4
AIR-TO-AIR SYSTEM EVALUATION TESTS
The air-to-air charge cooler system must be tested to verify that engine air intake temperatures
and pressure drop limits can be met as shown in the “Technical Data” section of this manual
(refer to section 14). This evaluation can be done simultaneously with the engine cooling index
test.
Maximum Temperature Rise–Ambient to Intake Manifold
The maximum temperature differential between the ambient temperature and the temperature at
the intake manifold needs to be determined.
See Figure 4-11 for temperature location, the location description is listed in Table 4-4.
Symbol
Measurement
Location Description
T
1
Air inlet temperature
Within 5 in. of the turbocharger
T
2
Compressor discharge
temperature
Within 5 in. of the compressor outlet
T
3
Intake manifold temperature
Within 5 in. of the inlet connection
T
4
- T
8
Charge air cooler core air inlet
temperature
5 points in front of the core, one in the center and
one at each corner for determining recirculation
Table 4-4
Thermocouples
These temperature restrictions for the MBE4000 engine is listed in the “Technical Data” section
of this manual (refer to section 14).
4-24
All information subject to change without notice.
(Rev. 03/06)
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION
