Porsche Cayenne 2020, Руководство пользователя

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Refueling
236
Emergency release of filler flap
Fig. 163: Performing emergency release of filler flap
In the case of a fault with the electrical release, the
filler flap can be opened manually:
1. Carefully remove the right luggage compartment
trim panel.
2. Pull the red emergency release button.
The filler flap is unlocked.
E-Hybrid vehicles: When unscrewing the gas cap
following emergency release, fuel vapors can
leak out.
Fuel Evaporation Control
Fuel tank venting
The evaporation chamber and the carbon canister
prevent fuel vapors from escaping to the atmos-
phere at extreme high outside temperatures, when
driving abruptly around curves and when the vehicle
is parked at an incline or in any other nonlevel
position.
Vapor control system and storage
When the fuel tank is filled, vapors are collected in
the evaporation chamber by a vent line leading the
vapors to the carbon canister where they are stored
as long as the engine does not run.
Purge system
When the engine is running, the fuel vapors from the
canister will be mixed with fresh air from the ambi-
ent air of the canister. This mixture will be directed
to the intake air housing by the tank vent line, mixed
with the intake air and burned during normal
combustion.