MOUNTING SYSTEM
11.1
MOUNTING SYSTEM DESCRIPTION
The purpose of the engine mounting system is to keep the transfer of engine vibrations to the
supporting structure at the lowest level possible. This section describes the functions, design, and
application for the mounting system of a Detroit Diesel MBE4000 engine.
The major functional requirements of an engine mounting system are:
□
To control and reduce the engine motion
□
To control external forces during shock or transient conditions to prevent physical contact
between the engine and the application
□
To limit the bending moments at the cylinder block-to-
fl
ywheel housing within the
maximum values speci
fi
ed for the engine and application
Flexible mounts, solid mounts, and a combination of the two types of mounts represent the
different mounting system con
fi
gurations.
Flexible mountings enable the supporting structure to be isolated from engine vibration.
Solid mountings are used when the movement of an engine with
fl
exible mounts is not acceptable.
A combination of solid and
fl
exible mountings may be used based on the relationship required
between the engine and the machine.
The vibration characteristics of the total installation will depend on the combined weight of the
engine and installation, and on the rigidity of the mounting system.
Most mount manufacturers have computer analysis programs which determine the proper mounts
for speci
fi
c applications.
11-2
All information subject to change without notice.
(Rev. 03/06)
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION