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3
FIAT FIORINO/QUBO NATURAL POWER
INTRODUCTION
The Fiat Fiorino/Qubo Natural Power ver-
sion features two fuel systems, one for
petrol and one for natural gas (methane).
The two systems are independent of one
another and the methane one is the timed,
sequential, multipoint type.
The start-up system runs on petrol.
What is natural gas?
Natural gas is a mixture of gases used as
a primary energy source.
Its main component is methane, so for this
reason it is usually known as methane even
though it contains small amounts of other
hydrocarbons and inert gases.
It is extracted in a gaseous state and trans-
ported to where it is used via gas pipelines;
world reserves are plentiful and widely dis-
tributed. Methane is fuel with a environ-
mental low impact because it significantly
reduces the contribution of exhaust gas-
es to the greenhouse effect and pollution.The methane multipoint
injection system
It is an original product from Fiat’s re-
search in the field of alternative fuels, that
comes from close co-operation with ma-
jor suppliers in the methane sector.
By adapting the sophisticated electronic
control technology of petrol engines to
meet the specifications of methane, it has
been possible to achieve important results
in terms of handling, exhaust emissions
and fuel consumption.
With the methane Multipoint injection
system, the engine features the same dri-
veability of a petrol fuelled one.
It should be borne in mind that, under all
driving conditions, methane operation of-
fers engine power and torque specifica-
tions that are 10% lower than with petrol
operation. Petrol operation is there-
fore recommended if a lot of power
is required (e.g. driving uphill with a
laden vehicle, steep hill starts).
Selecting the type of fuel supply
The Fiat Fiorino/Qubo Natural Power is
configured to run normally on methane
gas.When the methane is running out and the
pressure in the cylinder is close to the cor-
rect operating limit, the system automat-
ically switches to petrol operation.
The engine is always started up using
petrol (to keep this fuel supply system ef-
ficient) and, if the engine was running on
petrol before being switched off, when it
is started up again switching to methane
operation will need to be requested man-
ually.
For this reason there must always be
petrol in the tank.
The petrol/methane switch Fig. 1, 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.
Fig. 1F0T0343m
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15
FIAT FIORINO/QUBO NATURAL POWER
If the car is mainly used in town, change the engine oil and filter every 12 months.
Thousands of kilometres 30 60 90 120 150 180
Check engine management system operation (using diagnosis socket)
Replace accessory drive belt/s
Replace toothed timing belt (*)
Replace spark plugs
Replace air filter cartridge
Change engine oil and oil filter (or every 24 months)
Change brake fluid (or every 24 months)
Replace pollen filter (or every 24 months)
Visually inspect condition of: methane pipes and connectors,
methane tank fastening, restore, if necessary (**)
Check pressure regulator and, if necessary, replace internal filter (**)
Check operation and parameters of fuel supply system using
the self-diagnosis socket
Check tightening torque of the cylinder fastening bands
(*) Regardless of the mileage, the timing drive belt shall be replaced every 4 years for particularly demanding use (cold climates, town driving,
idling for a long time, dusty areas) or, in any case, every 5 years.
(**) or every 12 months.
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Page 16 of 24
GENERAL FEATURES 1.4
Engine identification code 350A1000
Cycle Otto
Number and layout of cylinders 4 in line
Piston bore and stroke mm 72 ˘ 84
Total capacity cc 1368
Compression ratio 11.1±0,2
kW
EEC max. power HP
at a speed of rpm
Nm
EEC max. torque kgm
at a speed of rpm
Spark plugsNGKZKR7A-10
Fuel
ENGINE
ENGINE CODE – BODYWORK VERSIONS
Engine code Bodywork version
1.4350A1000 225AXC1A03 (*)
225AXC1A03B (❍)
225BXC1AA7 (❒)
COMBI versions (*) QUBO versions (❍) CARGO versions (❒)
MethaneUnleaded petrol
95 RON
(EN 228 specification)
16
FIAT FIORINO/QUBO NATURAL POWER
51
70
6000
104
10.6
300057
77
6000
115
11.7
3000
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