Fuel supply
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Fuel Pumps
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The fuel pump is part of a fuel supply unit which is located in the tank.
Fuel Pumps with Swirl Pot
Within a supply unit, a pump is installed into a swirl pot.
Fuel Supply Units
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The fuel supply unit consists of a fuel pump (sometimes with swirl pot), a filter, and a flange with corresponding connections. In addition, the supply unit can be equipped with a lever-type sensor, or can be used with a tubular-type sensor.
Lever-Type Sensors
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Lever-type sensors are used to measure the fuel level in connection with an electrical display unit. Some sensors are grounded. Sensors without grounding have a separate ground connection.
The lever-type sensor types in the product range include:
- Without warning contact, insulated return
- Without warning contact, insulated return (adjustable)
- Without warning contact, insulated return (special)
Lever-type sensors can also be equipped with a warning contact to signal the reaching of a fuel level limit (reserve) and for continual measuring.
Tubular-Type Sensors
![](/getmedia/06a1c08b-662b-4945-912a-920ddbb67155/vdo_tubular_type_sensor?width=150&height=231)
Tubular-type sensors are used to measure the fuel level in connection with an electrical display unit. Some sensors are grounded. Sensors without grounding have a separate ground connection.
The tubular-type sensor types in the product range include:
- Without warning contact, common ground or insulated return (ø 54 mm)
- Without warning contact, common ground or insulated return (ø 80 mm)
- With warning contact, common ground or insulated return (ø 54 mm)
- Without warning contact, common ground or insulated return (special)
Tubular-type sensors can also be equipped with a warning contact to signal the reaching of a fuel level limit (reserve) and for continual measuring.
Fuel Pressure Regulators
Fuel pressure regulators maintain a defined fuel pressure. If pressure is exceeded, a spring-loaded membrane allows the return-flow channel to open, permitting excess fuel to flow back into the fuel tank.