MBE4000 APPLICATION AND INSTALLATION
7.11.4
HEADER TANKS
Header tanks should be designed for minimum pressure loss and uniform air
fl
ow distribution
across the core. Rounded corners and smooth interior surfaces provide a smooth transition of
the air
fl
ow resulting in minimum pressure loss. The inlet and outlet diameters of the header
tanks should be the same as the pipework to and from the engine. A 101.6 mm (4 in.) minimum
diameter is required for the MBE4000 engines. The tube ends require a 2.3 mm (0.09 in.)
minimum bead to retain hose and clamp connections.
7.11.5
LOCATION
The cooler is typically mounted directly in front (upstream of air
fl
ow) or along side the engine
coolant radiator. Other locations are acceptable as long as performance requirements are met.
The cooler should be located as close to the engine as practical to minimize pipe length and
pressure losses.
Leave access space between the cores when stacked in front of one another so debris may be
removed.
7.11.6
PIPEWORK
Give careful attention to the pipework and associated
fi
ttings used in the inlet system, in order to
minimize restriction and maintain reliable sealing.
Pipework length should be as short as possible in order to minimize the restriction incurred in
the system and to keep the number of bends to a minimum. Use smooth bend elbows with an
R/D (bend radius to tube diameter) ratio of at least 2.0 and preferably 4.0. The cross-sectional
area of all pipework to and from the charge air cooler must not be less than that of the intake
manifold inlet.
The recommended tube diameter for the MBE4000 engines is 101.6 mm (4 in.) for both the
turbocharger to CAC heat exchanger, and from the CAC heat exchanger to the engine air intake
manifold.
All information subject to change without notice.
(Rev. 03/06)
7-25
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION
