Fig 15-6
Recommended design of the generating set seating (3V46L0720G)
B*
A*
Engine type
1580 / 1730
1330 / 1480
4L
1580 / 1730 / 1880
1330 / 1480 / 1630
6L
1730 / 1880
1480 / 1630
8L
1730 / 1880 / 2110
1480 / 1630 / 1860
9L
* Dependent on generator width
15.3.3
Rubber mounts
The generating set is mounted on conical resilient mounts, which are designed to withstand
both compression and shear loads. In addition the mounts are equipped with an internal buffer
to limit movements of the generating set due to ship motions. Hence, no additional side or
end buffers are required.
The rubber in the mounts is natural rubber and it must therefore be protected from oil, oily
water and fuel.
The mounts should be evenly loaded, when the generating set is resting on the mounts. The
maximum permissible variation in compression between mounts is 2.0 mm. If necessary,
chocks or shims should be used to compensate for local tolerances. Only one shim is permitted
under each mount.
The transmission of forces emitted by the engine is 10-20% when using conical mounts.
Wärtsilä 20 Product Guide - a13 - 6 September 2016
15-7
15. Foundation
Wärtsilä 20 Product Guide
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