VERSION WITH
METHANE SYSTEM
(Natural Power)
41) 42) 43)
8) 9) 10)
INTRODUCTION
The Fiat Doblò Natural Power version
features two fuel supply systems,
one for petrol and one for natural gas
(methane).
Selecting the type of fuel supply
Fiat Doblò Natural Power is configured
to run normally on methane.
When the methane is running out and
the pressure in the cylinder is close
to the correct operating limit, the
system automatically switches to petrol
operation.
The engine always starts up on petrol,
with automatic switching to methane
when the best conditions are achieved
(engine water temperature, minimum
engine rpm limit) for switching to
methane.
Therefore, there must always be some
petrol in the tank (at least 1/4 full), in
order not to compromise the operation
of the fuel pump.
For this reason there must always
be petrol in the tank.The petrol/methane switch fig. 87,
amongst the controls in the dashboard,
makes it possible to select petrol
operation. The system does not switch
automatically to methane operation if
the petrol runs out.
IMPORTANT If gas is smelled, switch
from methane operation to petrol
operation and immediately go to a Fiat
Dealership to have the vehicle checked
and possible system faults excluded.
METHANE CYLINDERS
The vehicle is provided with 4 cylinders
with a capacity of 95 litres; for the
Cargo Maxi version (long wheelbase), a
5
thcylinder is available as an optional,
increasing the capacity to 130 litres.The cylinders are all located under the
floor and protected by special guards.
The cylinders fig. 88, fig. 89 and fig.
90 are the tank that contains methane
in compressed gaseous state (200
rated bar at 15 °C).
Canister capacity:
- Short wheelbase versions: approx.
16.15 kg
- Short wheelbase versions: approx.
22.1 kg.
The amount of methane depends on
the outside temperature, the supply
pressure, the quality of the gas and the
type of refuelling system. Overall
cylinder volume approximately 95 litres
(short wheelbase versions) and 130
litres (long wheelbase versions).
87F0V0587
88F0V0233
47
Closing
1) Fit the cap (complete with key) and
turn it clockwise until it clicks once
or more.
2) Turn the key clockwise and extract it,
then close the flap.
The sealing may cause a slight pressure
increase in the tank. A little breathing
off, while slackening the cap is
absolutely normal.
29)
NATURAL POWER
VERSIONS
The methane filler is located near the
petrol filler
To access the filler, undo the cap fig.
137 turning it anticlockwise.
The profile of filler fig. 138 for refilling is
the universal type, compatible with
Italian and NGV1 standards.In some European countries adapters
are considered ILLEGAL (e.g. in
Germany).
For service stations with cubic metre
(m
3) nozzles (pressure differential)
the check valves must be released by
delivering a small amount of methane to
measure the residual pressure in the
cylinder.
The plates (provided with the vehicle
documentation) contain the date for the
first inspection of the cylinders.
30)
Fuel - Vehicle
compatibility
identification - Graphic
symbol for informing
consumers in
accordance with
EN16942
The symbols shown below facilitated
recognising the correct fuel type to
be used on your car. Before proceeding
with refuelling, check the symbols
inside the fuel filler flap (where provided)
and compare them with the symbols
shown on the fuel pump (where
provided).
Symbols for petrol powered cars
E5: Unleaded petrol containing up to
2.7% (m/m) oxygen and with maximum
5.0% (V/V) ethanol compliant with
EN228
E10: Unleaded petrol containing up to
3.7% (m/m) oxygen and with maximum
10.0% (V/V) ethanol compliant with
EN228
137F0V0239
138F0V0240
118
STARTING AND DRIVING
