Fuel tank and components
- Make
- Fiat
- Model
- Multipla Factory Service Manual
- Year
- 1998–2010
- Section
- Fuel tank and pipes › Fuel tank and components
Fuel tank and components
IMMERSED PUMP ASSEMBLY COMPLETE WITH FUEL GAUGE
It is mainly composed of:
- electric fuel pump (1)
- fuel filter (2)
- float-type fuel gauge sender unit (3)
- diaphragm pressure regulator (4)
- mesh pre-filter (5).
Electric fuel pump
The fuel pump comprises a permanent-magnet electric motor (1) which controls the pump impeller (2), and a terminal-carrier cover (3), which contains the electrical and hydraulic connections.
The pump stage is of the single type with peripheral flow, with high performance under low voltage and temperature conditions.
Its advantages compared with pumps operating in accordance with the positive-displacement principle are:
- light weight
- small size.
Specifications:
Flow rate = 110 l/h
Pressure 4 bar
Voltage 12 V
Current = 7.5 A
INERTIA SWITCH
In the event of a crash, the inertia switch, mounted under the driver's seat, breaks the fuel pump's connection to earth and consequently the supply to the fuel injection system.
A steel ball (1) mounted in a conical housing (2) is normally locked by the attraction force of an adjacent magnet.
Under specific acceleration loads, the ball is released from the magnetic lock and gradually emerges from the conical housing in an upward movement, following the angle of the cone.
Above the ball, there is a quick-trip mechanism (3) which forms the normally closed (N.C.) electric circuit.
When the mechanism is struck by the ball, it changes position from N.C. circuit to normally open (N.O.), breaking the fuel pump's earth circuit.
The switch can be reset by pressing a button protected by a soft cover (4).
After a crash, even if minor, if a smell of combustion or fuel leaks are perceived, do not reset the switch, but seek the cause of the fault and eliminate it, in order to avoid risks of fire. Otherwise, if there are no leaks and the vehicle can be restarted, press the button to reactivate the pump.
FUEL TANK
The fuel tank, with a capacity of about 38 litres, is made of a plastic material.
It is fitted with a flexible filler and includes the seating for fitting the fuel pump assembly. It also has housings for the fuel anti-evaporation system components.
IMMERSED PUMP ASSEMBLY COMPLETE WITH FUEL GAUGE
It is mainly composed of:
- electric fuel pump (1)
- fuel filter (2)
- float-type fuel gauge sender unit (3)
- diaphragm pressure regulator (4)
- mesh pre-filter (5).
ELECTRIC FUEL PUMP
The fuel pump comprises a permanent-magnet electric motor (1) which controls the pump impeller (2), and a terminal-carrier cover (3), which contains the electrical and hydraulic connections.
The pump stage is of the single type with peripheral flow, with high performance under low voltage and temperature conditions.
Specifications
- Flow rate >= 110 l/h
- Pressure 4 bar
- Voltage 12 V
- Current = 7.5 A
Its advantages compared with pumps operating in accordance with the positive-displacement principle are:
- light weight
- small size.
INERTIA SWITCH
In the event of a crash, the inertia switch, mounted under the driver's seat, breaks the connection to earth of the fuel pump and the methane cut out solenoid valves and consequently the supply to both systems.
In the event of a crash, the inertia switch, mounted under the driver's seat, breaks the connection to earth of the methane cut out solenoid valves and consequently the supply to the fuel injection system.
A steel ball (1) mounted in a conical housing (2) is normally locked by the attraction force of an adjacent magnet.
Under specific acceleration loads, the ball is released from the magnetic lock and gradually emerges from the conical housing in an upward movement, following the angle of the cone.
Above the ball, there is a quick-trip mechanism (3) which forms the normally closed (N.C.) electric circuit.
When the mechanism is struck by the ball, it changes position from N.C. circuit to normally open (N.O.), breaking the fuel pump's earth circuit.
The switch can be reset by pressing a button protected by a soft cover (4).
After even a minor crash, if there is a burning smell or a fuel leak, do not reset the switch, but find the cause of the fault and eliminate it, in order to avoid risks of fire.
Otherwise, if there are no leaks and the vehicle can be restarted, press the button to reactivate the pump.
CONSTRUCTION FEATURES
Fuel tank
The fuel tank, with a capacity of about 38 litres, is made of a plastic material.
It is fitted with a flexible filler and includes the seating for fitting the fuel pump assembly. It also has housings for the fuel anti-evaporation system components.
Submerged pump assembly complete with fuel gauge sender unit
It is mainly composed of:
- an electric fuel pump (1)
- a fuel filter (2)
- a float type fuel gauge (3)
- a diaphragm pressure regulator (4)
- a mesh pre-filter (5).
Electric fuel pump
The fuel pump comprises a permanent-magnet electric motor (1) which controls the pump impeller (2), and a terminal-carrier cover (3), which contains the electrical and hydraulic connections.
The pump stage is the single type with peripheral flow, with high performance in low voltage and temperature conditions.
SPECIFICATIONS
- Capacity 110 l/h
- Pressure 4 bar
- Voltage 12 V
- Current = 7.5 A
Its advantages compared with pumps operating in accordance with the positive-displacement principle are:
- light weight
- small in size.
Inertia switch
In the event of a crash, the inertia switch, mounted under the driver's seat, breaks the fuel pump earth connection, closes the cylinder and pressure adaptor solenoids and consequently the supply to both systems.
A steel ball (1) mounted in a conical housing (2) is normally locked by the attraction force of an adjacent magnet.
Under specific acceleration loads, the ball is released from the magnetic lock and gradually emerges from the conical housing in an upward movement, following the angle of the cone.
Above the ball, there is a quick-trip mechanism (3) which forms the normally closed (N.C.) electric circuit.
When the mechanism is struck by the ball, it changes position from an N.C. circuit to a normally open (N.A.) circuit, breaking the fuel pump's earth circuit.
The switch can be reset by pressing a button protected by a soft cover (4).
Even after an apparently minor impact, if there is a smell of fuel or leaks are noticed from the fuel system, do not turn the switch back on, but search for the cause of the problem and remedy it to prevent the risk of fire. Otherwise, if there are no leaks and the vehicle can be restarted, press the button to reactivate the pump.
CONSTRUCTION FEATURES
CONSTRUCTION FEATURES
Fuel tank
The fuel tank, with a capacity of about 38 litres, is made of a plastic material.
It is fitted with a flexible filler and includes the seating for fitting the fuel pump assembly. It also has housings for the fuel anti-evaporation system components.
Submerged pump assembly complete with fuel gauge sender unit
It is mainly composed of:
- an electric fuel pump (1)
- a fuel filter (2)
- a float type fuel gauge (3)
- a diaphragm pressure regulator (4)
- a mesh pre-filter (5).
Electric fuel pump
The fuel pump comprises a permanent-magnet electric motor (1) which controls the pump impeller (2), and a terminal-carrier cover (3), which contains the electrical and hydraulic connections.
The pump stage is the single type with peripheral flow, with high performance in low voltage and temperature conditions.
SPECIFICATIONS
- Capacity 110 l/h
- Pressure 4 bar
- Voltage 12 V
- Current = 7.5 A
Its advantages compared with pumps operating in accordance with the positive-displacement principle are:
- light weight
- small in size.
Inertia switch
In the event of a crash, the inertia switch, fitted to the left panel under the facia the driver's side, cuts off the earth connection (a), the fuel pump (b), the LPG pump (3), the gas arrest solenoid on the pressure regulator, the LPG uptake valve on the tank and the LPG feed pump. the fuel supply to both systems is thus cut off.
A steel ball (1) mounted in a conical housing (2) is normally locked by the attraction force of an adjacent magnet.
Under specific acceleration loads, the ball is released from the magnetic lock and gradually emerges from the conical housing in an upward movement, following the angle of the cone.
Above the ball, there is a quick-trip mechanism (3) which forms the normally closed (N.C.) electric circuit.
When the mechanism is struck by the ball, it changes position from an N.C. circuit to a normally open (N.A.) circuit, breaking the fuel pump and LPG earth circuit.
The switch can be reset by pressing a button protected by a soft cover (4).
Even after an apparently minor impact, if there is a smell of fuel or leaks are noticed from the fuel system, do not turn the switch back on, but search for the cause of the problem and remedy it to prevent the risk of fire. Otherwise, if there are no leaks and the vehicle can be restarted, press the button to reactivate the pump.
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