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The fuel is conveyed via the filler pipe into the
right tank chamber (as viewed in direction of
travel). The fuel passes via an additional
overflow channel at the end of the filler pipe
predominantly into the right pump reservoir.
Use of the small overflow channel ensures
that even small quantities of fuel (e.g. filling
from canister) pass directly into the pump
reservoir.
The breather function for the side
compartments is provided by two breather
pipes to the main chamber.
Routing the filler pipe beneath the
longitudinal member means that the lowest
point of the pipe is not at the connection to
the fuel tank, thus producing a siphon effect.
A residual quantity of fuel remains in the filler
pipe. This necessitates a separate pipe to the
filler neck for the main chamber breather
function and for OBD II leakage diagnosis.
When the tank is full, the filler hose is closed
by a float-type shutoff valve at the end of the
filler pipe.
Interior of fuel tank (filling)
SSP282_006
Baffle housing
of expansion tank
Reservoir
with pump unit, left
Reservoir
with pump unit, right
Float-type shutoff valve
Breather pipe
to filler pipe
Overflow channel
Filler pipe
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