2008 FIAT GRANDE PUNTO gas type

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FIAT PUNTO LPG
KNOWING YOUR CAR
Introduction
The LPG version of the car features two
fuel systems: one for petrol and one for
LPG.
Like the petrol system, the LPG system
is the phased, sequential multipoint type
with special injectors.LPG Multipoint injection system
This product is produced in strict collab-
oration with prestigious suppliers in the
LPG sector.
The injection system used on the car is an
efficient system in terms of engine per-
formance and is based on the injection of
LPG in a gaseous state.
In this system with four injectors, one for
each intake manifold, the fuel is injected
directly into the engine heat transfer ducts
thereby metering the LPG very precisely
improving combustion and, at the same
time, excluding any possibility of flame re-
turn.
By adapting the electronic control tech-
nology of petrol engines to meet the spec-
ifications of LPG, it has been possible to
achieve important results in terms of dri-
veability and controlling exhaust emissions.
Engines running on LPG have almost the
same torque/power specifications as when
running on petrol and, as a result, the per-
formance of the car is also comparable. What is LPG?
LPG (the abbreviation of liquefied petro-
leum gas) is a mixture of gas used as an
economical and safe primary energy
source.
Its main components are: propane gas and
butane gas mixed.
These gases are a product of petroleum
refinement and are also present naturally
in oil fields and methane-producing de-
posits.
In its natural state this mixture is in a
gaseous state but, as the pressure in-
creases, at ambient temperature, it can
easily be turned into a liquid state.
LPG is a fuel with a low environmental im-
pact because it reduces the pollution pro-
duced by vehicle exhaust gases.
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FIAT PUNTO LPG
The system extreme operat-
ing temperatures are between
-20°C and 100°C.
Selecting the type of fuel supply
The car is configured for running inde-
pendently on either petrol or LPG.
The engine is always started on petrol
with an automatic shift to LPG after about
40 seconds at the first significant acceler-
ation.
This is the time required to reach opti-
mum conditions (engine coolant temper-
ature, minimum revs level) for the switch
to LPG. As far as what has been said
is concerned, there must always be
some petrol in the tank (at least 1/4
full)in order not to compromise the op-
eration of the fuel pump. When running on LPG, when
the last red LED on gas quan-
tity indicator (visible on the
switch) comes on, refuelling is
advisable. If the LPG runs out during
LPG operation, the system automati-
cally switches to running on petrol
shown by: the amber LED coming on
constantly and the green LED flashing,
the fuel level LEDs going out and a
buzzer in the switch.
In addition, it is advisable to periodically
use up the petrol in the tank (until the re-
serve warning light comes on) in order to
ensure that the petrol does not become
old and possibly deteriorate.
The petrol/LPG switch A-fig. 1, located
on the protective fuse flap (left side of the
dashboard) allows the driver to select
petrol or LPG operation at their discre-
tion.
fig. 1F0M0472m
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FIAT PUNTO LPG
LPG TANK
The vehicle has a (pressurized) tank A-
fig. 3for LPG in a liquid state that is
toroidal in shape and located in the hous-
ing for the spare wheel with suitable pro-
tection.
The LPG in the tank Ais always in a liquid
and gaseous state, in physical equilibrium
conditions.
The liquid, which cannot be compressed,
dilates by around 0.25% for each increase
in temperature of one degree. For this
reason a suitable space allowing the in-
crease in volume of the liquid for all
forseeable temperature increases is guar-
anteed (e.g. car parked in the full sun in
summer) without compromising the in-
tegrity of the tank.
In effect, there is a safety valve that auto-
matically limits the refilling of the tank
(during refuelling) to a maximum level of
80% (liquid) of its total capacity.Periodically (at least once
every six months) it is advisable
to let the LPG in the tank run
out and, at the first refuelling,
check that it does not exceed the max-
imum capacity of 38 litres (see instruc-
tions in “Capacities” paragraph in this
Supplement). If the value is above 38
litres, go to a Fiat Dealer immediately.
LPG TANK CERTIFICATION
The LPG tank is certified in accor-
dance with the regulations in force.
In Italy the tank has a life of 10 years
from the registration date of the car.
If the car has been registered in a dif-
ferent country from Italy, the life of
the LPG tank and test/inspection
procedures may vary depending on
the laws in force in that particular
country. In any case, when the time
limit in the individual country has run
out, go to a Fiat Dealer to have the
tank replaced.There is a plate on the tank B-fig. 3con-
taining the following information:
– homologation country identification and
homologation number;
– type of gas designed for (LPG);
– name of tank manufacturer;
– tank test pressure (30 bar);
– maximum refilling percentage (80%);
– tank dimensions;
– nominal tank capacity in litres;
– tank manufacture date (month/year);
– tank serial number.
fig. 3
48
F0M0474m
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FIAT PUNTO LPG
AT THE FILLING
STATION
LPG filler
The gas filler is located next to the petrol
filler cap. It has a one-way valve, located
in the actual filler body.
To access the filler B-fig. 8, open the ac-
cess flap Aand undo the cap C.
Observe the following precautions during
the refuelling operation:
– switch off the engine;
– apply the handbrake;
– turn the ignition key to the STOPpo-
sition;
– do not smoke;
– hand the special adaptor over to the
qualified LPG refuelling personnel.
IMPORTANT Before refuelling with LPG,
the qualified personnel should make sure
that the adapator is correctly tightened
onto the filler fitting.
IMPORTANT Depending on the country,
there are two types of adaptors for refu-
elling pumps. The adaptor that comes with
the car in a special case is specifically de-
signed for the country in which the car is
sold. If you are in a different country, find
out what type of adapator is used there.
WHEELS
Wheel repair
The car does not have a spare wheel but
comes with a quick tyre repair kit known
as Fix&Go.
The kit is located on the left side of the
luggage compartment and is fastened by
velcro.
See the instructions in the booklet that
this supplement comes with.
The tool box fig. 9is located under the
driver’s seat and fastened by velcro.
FUSE REPLACEMENT
The LPG system components are pro-
tected by a 20A fuse F81 (power supply +
battery) installed, depending on the ver-
sion, near the battery or in the engine
compartment junction unit and a 5A fuse
F16 (power supply + ignition) in the en-
gine compartment junction unit.
For all the other fuses, consult the Own-
er Handbook that this supplement comes
with.
fig. 8F0M0479m
fig. 9F0M0480m
IMPORTANT Only use LPG for mo-
tor vehicles.
IMPORTANT Look after the LPG
adapator carefully so that it does not
get damamged.
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FIAT PUNTO LPG
LPG FUEL SYSTEM
Electronic injection with special LPG injec-
tors.
Type: Phased, sequential, multipoint.
Stoichiometric metering of the air/gas mix-
ture.
Engine idle speed:
700 ± 50 rpm
The LPG injection system is controlled by
a dedicated control unit (connected to the
petrol one) using the sensors already on
the car.
IGNITION
Static advance, electronic, integrated with
the injection.
PERFORMANCE
Top speed in km/h.
Running on petrol: 165
Running on LPG: 165
Modifications or repairs to
the fuel feed system that are
not carried out properly or do not
take the system’s technical specifica-
tions into account can cause mal-
functions leading to the risk of fire.
WARNING
INTRODUCTION 1.4
Engine identification code 350A1000
Cycle Otto
Number of cylinders and position 4 in line
Piston diameter and stroke mm 72 x 84
Total capacity cm31368
Compression ratio 11.1 : 1
LPG Petrol
kW 57 57
Max power CEE bhp 77 77
at a speed of rpm 6000 6000
Nm 115 115
Max torque CEE kgm 11.7 11.7
at a speed of rpm 3000 3000
Spark plugs NGK ZKR7A-10
Fuel
LPGGreen petrol
unleaded
95 RON
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