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The most important component of a coolant module is the coolant
radiator. It comprises the radiator core and water tank with
all the necessary connections and attachment elements. The
radiator core itself is made up of the radiator network -
a pipe/rib system - the pipe bottoms and the sides. Conventional
coolant radiators have a coolant box made of glass fibre reinforced
polyamide which has a seal fitted and is beaded before
being placed on the pipe bottom. The latest trend are all-aluminium
radiators, which weigh less and require less design depth -
as well as being 100 % recyclable. The heat produced by combustion
in the engine is absorbed by the coolant and discharged
to the external air via the radiator.
Coolant radiators are installed in the air flow at the front of the
vehicle, with different designs available. In the case of downflow
radiators, the water enters the radiator at the top and emerges
at the bottom. In the case of crossflow radiators, the coolant
enters at one side and emerges at the other. Crossflow radiators
have a lower design and are used particularly in passenger cars.
Faults occur particularly frequently due to accidents or leaks.
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