61
121 F0T0343
The actual change to the chosen fuel
system takes place depending on the
vehicle usage conditions to guarantee
switching in absolute safety and will
be confirmed by the warning light
in the instrument panel display coming
on/going off.
Manual switching of the operating
mode from petrol to methane and
vice versa only occurs if the engine
speed is below 2000 rpm.
8)
In addition, in the case of starting at
outside temperatures of below around
-10°C, the switching times from Petrol
to Methane increase to allow the
pressure regulator/reduction unit to
become warm enough.
WARNING If switching takes place
during acceleration or pick-up, there
may be a brief flat spot (drop in power).
9)
CNG SYSTEM FAILURE
In case of CNG system failure, all the
CNG fuel levels will turn off on the
display and the symbol "!" will appear
together with a dedicated message. In
this case, contact a Fiat Dealership as
quickly as possible.
IMPORTANT
7)
Regardless of the last fuel system used,
at the following engine starting, after
the initial petrol stage, the system will
automatically switch to methane.
8)
When switching is requested, metallic
noise from the valves which pressurise
the circuit can be heard. For the switching
logic described above, a delay between
the valve ticking and the switching off the
indication on the instrument panel display.
9)
Do not switch between the two
operating modes whilst starting the
engine.
PROTECTING THE
ENVIRONMENT
The following devices are used for
reducing petrol fuel engine emissions:
three-way catalytic converter
Lambda 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) (for
versions/markets, where provided).
DIESEL PARTICULATE
FILTER (DPF)
(for versions/markets, where provided)
The Diesel Particulate Filter is a
mechanical filter, integral to the exhaust
system, that physically traps carbon
particles 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
Powertrain Control Module records a
set of data (travel time, type of route,
temperatures reached etc.) and
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