An air guide is disclosed for a bonnet-covered engine bay of a goods
vehicles, in particular agricultural tractors, where under the bonnet are
located a combustion engine (1), components under high thermal load and
low thermal load, and a fan which generates an air flow which is directed
through air guide ducts past the combustion engine into the open. As the
air flow from the fan heats up greatly on the combustion engine, there is
a risk of a deterioration in the functioning of heat-sensitive components
exposed to the air flow. To eliminate this risk, on both sides of the
combustion engine (1) in the area of the components (4, 5, 6, 7) under
high thermal load, between the combustion engine (1) and a side part (3)
of the bonnet in a plane lying substantially parallel to the side part of
the bonnet or combustion engine (1), is arranged an air guide element
(11) which divides the air flow from the fan into an air flow (12)
between the engine and the guide element (11) over the components (4, 5,
6, 7) under high thermal load and at least one air flow (13,14) between
the guide element (11) and the side part (3) of the bonnet over the
components (8, 9) under low thermal load.