Technical data

20
Design and function
Hull cooling TAMD61, -62, -71B
The hull cooling system on the TAMD61, -62, -71B is
a single circuit, sealed fresh water system which
cools the engine through contact with the sea water.
When the engine is equipped with a hull cooling
system, it replaces the ordinary heat exchanger on
the engine.
The coolant in the system circulates through the
reverse gear oil cooler, the aftercooler, engine,
turbocharger and engine oil cooler.
Coolant circulation is arranged by the ordinary engine
coolant pump.
Hull cooling TAMD63, -71A, -72
The hull cooling system on the TAMD63, -71A, -72
consists of two separate, sealed circuits, with cooling
coils which cool the engine through contact with the
sea water.
The hull cooling system, which replaces the heat
exchanger function, has a separate circulation pump
and expansion tank for each circuit.
In circuit 1, where the coolant circulates by means of
the ordinary engine cooling pump, the engine, turbo
and engine oil cooler are cooled.
In circuit 2, the sea water pump is used as the
circulation pump, and cools the aftercooler and
reverse gear oil cooler.
1-circuit hull cooling system for TAMD61, -62, -71B
Hull cooling circuit 1 for TAMD71A,-72, -63
Hull cooling circuit 2 for TAMD71A,-72, -63