FIAT 500 - Manual (Page 81)

PROTECTING THE ENVIRONMENT
The following devices are used for reducing petrol
fuel engine emissions:
❒ three-way catalytic converter (catalytic converter)
❒ oxygen sensors
❒ evaporation control system.
In addition, do not let the engine run, even for a test,
with one or more spark plugs disconnected.
The following devices are used for reducing diesel
fuel engine emissions:
❒ oxidising catalytic converter
❒ exhaust gas recirculation system (EGR)
❒ particulate filter (DPF).
WARNING
The catalytic converter develops high
temperature during operation. Do not
park the car on grass, dry leaves, pine needles
or other flammable material: fire hazard.
DIESEL PARTICULATE FILTER (DPF)
(Multijet versions with DPF only)
The Diesel Particulate Filter is a mechanical filter,
integral with the exhaust system, that physically traps
particulates present in the exhaust gases of diesel
engines. The diesel particulate filter has been
adopted to eliminate almost all particulates in
compliance with current / future legal regulations.
During normal use of the vehicle, the engine control
unit records a set of data (e.g.: travel time, type of
route, temperatures, etc.) and it will then calculate
how much particulate has been trapped by the filter.
Since this filter physically traps particulate, it should
be regenerated (cleaned) at regular intervals by
burning carbon particles. The regeneration
procedure is controlled automatically by the engine
management control unit according to the filter
conditions and vehicle use conditions. There may be
a limited increase in the engine speed during the
regeneration, a limited increase in fumes and high
temperatures at the exhaust. These are not faults;
they do not impair vehicle performance or damage
the environment. If the dedicated message is
displayed, refer to paragraph "Warning lights and
messages".
80
GETTING TO
KNOW YOUR CAR
SAFETY
STARTING AND
DRIVING
WARNING LIGHTS
AND MESSAGES
IN AN EMERGENCY
SERVICING AND
MAINTENANCE
TECHNICAL
SPECIFICATIONS
INDEX