Fiat Bravo 2009 User Manual
LPG
FIATBRAVO
604.39.936 BRAVO GPL GB 7.0 3-12-2008 9:16 Pagina 1
604.39.936 BRAVO GPL GB 7.0 3-12-2008 9:16 Pagina 2
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FIAT BRAVO LPG
The Fiat Bravo LPG version (Petrol- LPG)
is dealt with in this appendix.
For anything not included in this Supplement, refer to the Owner Manual enclosed.
INDEX
KNOWING YOUR CAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SYSTEM FUNCTIONAL DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LPG TANK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SOLENOID VALVES AND SAFETY DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
REGULATION UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PAPER FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
LPG INJECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
ELECTRONIC CONTROL UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
LPG/PETROL SWITCH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FUEL CUT OFF SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
STARTING THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
REFUELLING THE CAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
WHEELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
FUSE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SCHEDULED SERVICING PLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
WEIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
CAPACITIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
FUEL CONSUMPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
CO2EMISSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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FIAT BRAVO 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 collaboration with prestigious suppliers in the
LPG sector. The injection system used on
the car is an efficient system in terms of
engine performance 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 return.
By adapting the electronic control technology of petrol engines to meet the specifications of LPG, it has been possible to
achieve important results in terms of driveability 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 performance of the car is also comparable.
The system extreme operating temperatures are between
–20°C and 100°C.
WHAT IS LPG?
LPG (the abbreviation of liquefied petroleum 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 deposits.
In its natural state this mixture is in a
gaseous state but, as the pressure increases, at ambient temperature, it can
easily be turned into a liquid state.
LPG is a fuel with a low environmental impact because it reduces the pollution produced by vehicle exhaust gases.
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FIAT BRAVO LPG
SELECTING THE
TYPE OF FUEL SUPPLY
The car is configured for running independently 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 acceleration.
This is the time required to reach optimum conditions (engine coolant temperature, 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 quantity indicator (visible on the
switch) comes on, refuelling is
advisable. If the LPG runs out during
LPG operation, the system automatically 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 reserve warning light comes on) in order to
ensure that the petrol does not become
old and possibly deteriorate.
The petrol/LPG switch fig. 1, located on
the centre tunnel (next to the gear lever)
allows the driver to select petrol or LPG
operation at their discretion.
fig. 1
F0Q0804m
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FIAT BRAVO LPG
When painting in an oven, the
LPG tank should be removed
from the car and later care-
fully refitted by a Fiat Dealership. Although the LPG system has
numerous safety features, it is advisable to close the manual tap on the
tank every time the car is not in use for
a long period, transported on other vehicles or moved in an emergency as a
result of a breakdown or accident.
Active safety
The car has the same active safety specifications as other versions.
The LPG tank meets the legal safety standards of the countries in which the version illustrated this Supplement is marketed.
The car is equipped with
gaseous LPG injection system
designed specifically for the
car: it is therefore strictly
prohibited to alter the configuration of
the system and components. The use
of other components or materials could
cause malfunctions and lead to a reduction in safety therefore, in the case
of problems, go to a Fiat Dealership.
When towing or raising the car, to prevent damage to the gas system parts,
follow the instructions in the Owner
Handbook in the “Towing the car”
chapter.
It should be pointed out that
in some countries (including
Italy) there are legal restrictions in
force for parking/garaging motor vehicles with gas that has a higher density than air; LPG comes under this
category.
WARNING
PASSIVE SAFETY/
ACTIVE SAFETY
Passive safety
The car has the same passive safety specifications as other versions. In particular,
the canister mountings (located in the
spare wheel housing) have been designed
to exceed the Fiat safety standards for impact tests.
When running on LPG, the flow of gas (in
a liquid state) leaving the canister, passes
through the dedicated pipe to the pressure regulator where there is a safety solenoid valve that stops the flow of LPG
when the key is turned off or when a
change of fuel is selected by the driver (decision to run on petrol).
Together with the regulator solenoid
valve, a second solenoid valve, in the tank,
closes the LPG pipe at the tank outlet.
The two solenoid valves are connected to
the inertia switch (Fire Protection System).
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FIAT BRAVO LPG
SYSTEM FUNCTIONAL DIAGRAM
DESCRIPTION OF THE SYSTEM FUNCTIONAL DIAGRAM fig. 2
1 LPG tank - 2 Multivalve assembly and safety devices - 3 LPG refuelling filler - 4 LPG piping - 5 Pressure regulator - 6 LPG injec-
tors - 7 LPG in gaseous state filter element - 8 LPG injection system electronic control unit - 9 LPG-petrol switch and LPG gauge
10 Petrol tank.
10
F0Q0808m
fig. 2
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FIAT BRAVO LPG
LPG TANK
The vehicle has a (pressurized) tank
A - fig. 3 for LPG in a liquid state that is
toroidal in shape and located in the housing for the spare wheel with suitable protection.
The LPG in the tank A is 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 increase in volume of the liquid for all
forseeable temperature increases is guaranteed (e.g. car parked in the full sun in
summer) without compromising the integrity of the tank.
In effect, there is a safety valve that automatically 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
maximum capacity of 41 litres (see instructions in “Capacities” paragraph in
this Supplement). If the value is above
41 litres, go to a Fiat Dealer immediately.
LPG TANK CERTIFICATION
The LPG tank is certified in accordance 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 different 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. 3 containing the following information:
– homologation country identification and
homologation number;
– type of gas designed for (LPG);
– name of canister manufacturer;
– canister test pressure (30 bar);
– maximum refilling percentage (80%);
– tank dimensions;
– nominal tank capacity in litres;
– canister manufacture date (month/year);
– canister serial number.
fig. 3
A
B
F0Q0801m
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